WO2022219574A1 - Bed provided with an articulated bed base comprising means for helping the patient to get up, and method for use thereof - Google Patents

Bed provided with an articulated bed base comprising means for helping the patient to get up, and method for use thereof Download PDF

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Publication number
WO2022219574A1
WO2022219574A1 PCT/IB2022/053509 IB2022053509W WO2022219574A1 WO 2022219574 A1 WO2022219574 A1 WO 2022219574A1 IB 2022053509 W IB2022053509 W IB 2022053509W WO 2022219574 A1 WO2022219574 A1 WO 2022219574A1
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WO
WIPO (PCT)
Prior art keywords
seat
bed
backrest
tilting
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2022/053509
Other languages
French (fr)
Inventor
Bernard Laurent
Nicolas Pierre LAURENT
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Sit Up
Original Assignee
Sit Up
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Filing date
Publication date
Application filed by Sit Up filed Critical Sit Up
Publication of WO2022219574A1 publication Critical patent/WO2022219574A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/053—Aids for getting into, or out of, bed, e.g. steps, chairs, cane-like supports
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/16—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto converting a lying surface into a chair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/065—Rests specially adapted therefor
    • A61G7/07—Rests specially adapted therefor for the head or torso, e.g. special back-rests
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/065—Rests specially adapted therefor
    • A61G7/075—Rests specially adapted therefor for the limbs
    • A61G7/0755—Rests specially adapted therefor for the limbs for the legs or feet

Definitions

  • the present invention relates to the technical field of beds with an articulated base, in particular of the medical type. First of all, it is aimed at a bed with an articulated base, which includes means to assist the patient, in order to facilitate his lifting. It also relates to a method for implementing this bed, including different stages of movement of the articulated bed base between its extreme positions.
  • Beds have also been proposed, which are capable of adopting an additional position called a lifting aid.
  • a lifting aid In this configuration, the patient's chest is raised and placed slightly forward. In this way, the patient can leave the bed more easily, subject to possible assistance from the medical personnel.
  • FR 3006 175 has proposed a bed equipped with an upper frame, movable relative to the base, on which the articulated bed base rests. More precisely, this upper frame can first be raised, lowered or incinerated with respect to the base. Furthermore, it is mounted in translation along the longitudinal axis of this base. In this way, the bed base can be brought towards the foot of the bed so as to accompany the lifting of the patient, without however modifying the position of the supports of the base on the floor.
  • the medical bed described in this French patent also has a complex structure.
  • the upper frame is very long, since it extends over substantially the entire bed. It is therefore conceivable that it is necessary to size the means of movement accordingly, between the base and the upper chassis.
  • an objective of the present invention is to remedy, at least partially, the drawbacks of the prior art mentioned above.
  • Another object of the invention is in particular to provide a medical bed, having a configuration which assists the lifting of the patient, in a convenient and safe manner.
  • a bed in particular of the medicalized type, comprising a base (1) intended to rest on the ground, as well as an articulated bed base (3, 5, 7), mounted on said base, this bed base comprising a central part forming a seat (3), an upper part forming a backrest (5), as well as a lower part forming a leg rest (7), first means (53) which are capable of pivoting the backrest with respect to the seat of the second pivoting means (75) which are capable of causing the leg rest to pivot with respect to the seat of the means (18, 19, 20 ) elevation / lowering of the seat relative to the base, this bed being characterized in that it further comprises tilting means (23, 28), which are capable of tilting the seat relative to the base, around a transverse axis (A3), so that the bed is capable of adopting a so-called patient lifting aid position, a position in which it the seat is tilted forward in relation to a horizontal axis
  • the transverse tilting axis (A3) is located between the opposite longitudinal ends of the seat, in a substantially horizontal position of the latter.
  • the tilting means comprise a tilting cylinder (23), the body of which is mounted on the plate (4) and the rod (25) of which is articulated on the seat, with the possible interposition of a connecting rod (28).
  • the backrest (5) comprises a central region forming a core (50), as well as lateral regions forming aisles (51,52), and displacement means (57,58) are provided, able to move each wing relative to the central region so as to form a lateral support shell for the patient.
  • - Reads further comprises control means (90, 91, 92), which are able to control all or part of the tilting means, raising / lowering means and moving means.
  • control means are configured to synchronize the means for tilting the seat, with the means for moving the wings of the backrest.
  • control means comprise a first control member (90) capable of being operated by the patient, capable of fulfilling a first range of functions, this first control member being advantageously mounted movable in longitudinal translation relative to the seat , under the effect of the pivoting of the backrest with respect to the seat
  • control means further comprise a second control member (91), capable of being operated by the nursing staff, this second control member being capable of fulfilling a second range of functions, distinct from said first range.
  • the legrest (7) is terminated, opposite the seat, by a footrest (8) having a so-called resting position relative to the legrest in the absence of external constraints, this footrest (8 ) being capable of pivoting relative to the legrest only in the direction of flexion under the effect of an external mechanical stress
  • the seat is tilted forward with respect to the horizontal axis at an angle (a'3) of between 20° and 40°, in particular close to 30°, the backrest being maintained substantially vertically, while the angle (a7) between the leg rest and the seat is between 80° and 100°, in particular close to 90°.
  • the invention also relates to a method for implementing the above bed, a method in which, from an elongated position in which the seat, the backrest and the legrest are substantially in the extension of each others :
  • the backrest and the leg rest are moved to a so-called relaxation position, by means of a pivoting of the backrest relative to the seat, a pivoting of the leg rest relative to the seat, and a tilting towards the back of the seat around its tilting axis - the seat, the backrest and the legrest are moved to a so-called sitting position, by tilting the seat forward around its tilting axis, while keeping the backrest and the legrest substantially immobile relative to this seat.
  • the seat is tilted again around its tilting axis forwards, so as to reach a so-called lifting aid position
  • the footrest is pressed against the ground, in the lifting aid position, by bending this footrest in relation to the leg rest.
  • FIG. 1 is a perspective view, illustrating a bed according to the invention in its so-called extended position, with a lowered bed base in the vicinity of its base.
  • FIG. 2 is a perspective view, illustrating the bed in its extended position with a raised base in relation to the base.
  • FIG. 3 is a schematic side view, illustrating the lying position of the bed.
  • FIG. 4 is a perspective view, illustrating the bed in an intermediate so-called relaxation position.
  • FIG. 6 is a perspective view, illustrating the bed in a so-called seated position.
  • FIG. 7 is a schematic side view, illustrating this seated position.
  • FIG. 8 is a perspective view, illustrating Se reads in a so-called patient lifting position.
  • FIG. 9 is a schematic side view, illustrating this lifting aid position.
  • FIG. 10 is a perspective view, illustrating the bed in a so-called sloping position.
  • FIG. 11 is a perspective view, illustrating the bed from behind in its seated position.
  • FIG. 12 is a schematic top view, illustrating the backrest of the bed in a configuration where it forms a lateral support shell for the patient.
  • FIG. 13 is a side view, illustrating the means for moving the seat relative to the base of the bed, in the lowered position of Figure 1
  • FIG. 14 is a side view similar to Figure 13, illustrating these displacement means in the raised position of Figure 3,
  • FIG. 15 is a side view similar to FIGS. 13 and 14, but from the opposite side, illustrating the use of the moving means to tilt stale in a first direction.
  • FIG. 16 is a side view similar to Figure 15, illustrating the use of moving means to tilt the seat in the opposite direction.
  • FIG. 17 is a perspective view, showing the bed from the front in a relaxation configuration.
  • FIG. 18 is a larger scale view of detail XVIII in figure 17.
  • This bed is formed by a base 1, as well as by an articulated bed base which is intended to receive a mattress y, shown in some of the figures.
  • This bed base essentially comprises a central part 3 forming a seat, an upper part forming a backrest 5, a lower part forming a leg rest 7, as well as an end part forming a footrest 8.
  • This bed base essentially comprises a central part 3 forming a seat, an upper part forming a backrest 5, a lower part forming a leg rest 7, as well as an end part forming a footrest 8.
  • the base 1 firstly comprises a tubular frame 10.
  • the latter is formed by longitudinal members 11, crosspieces 12, as well as oblique reinforcing bars 13. These various parts are surrounded by a peripheral casing 14.
  • This base is intended to rest on the ground, being fixed or mobile with respect to it.
  • castors 15 are provided allowing movement of the base and, consequently, of the entire bed. These rollers can advantageously be associated with mechanical locks, not shown, making it possible to immobilize the bed in a desired position.
  • the seat 3 first comprises a tubular frame 30, of rectangular shape. The latter is formed by beams 31, as well as crosspieces 32. This frame rests on a plate 4, which is carried by the upper end of the arms 18 and 19. This seat is further equipped by means of side armrests 45 , which are fixed to respective plates 46. As will be seen in more detail below, these plates and these armrests are slidable relative to the frame 30 of the seat 3, in a longitudinal direction.
  • the backrest 5 firstly comprises a central part, forming a core 50.
  • the latter has a trapezoidal profile, the long side of which extends horizontally in the lower part.
  • This core 50 is bordered by side parts, forming wings 51 and 52 of triangular profile.
  • the legrest 7 has a rectangular frame 70, formed by side members 71 and crosspieces 72. SI is also provided a transverse reinforcing bar 73. Finally the footrest 8 is typically formed by a plate, made of any suitable material. As will be seen in what follows, this material must in particular provide sufficient rigidity to the plate when it rests on the ground, in particular in the lifting aid position.
  • the seat 3 is first of all mobile with respect to the base 1, both in raising and lowering, as well as in tilting.
  • a first cylinder 20 for raising/lowering, there is provided a first cylinder 20, the body 21 of which is articulated on the frame of the base around a transverse axis A21, while its rod 22 is articulated on the plate of the sitting around another transverse axis A22.
  • This cylinder cooperates with two arms 18 and 19, the first ends of which are mounted on flanges 17 of the frame, while the opposite ends are mounted on flanges 39 belonging to the plate of the seat.
  • a second cylinder 23 is provided. This first has a body 24, which is articulated on the plate 4 around a transverse axis A24.
  • the backrest 5 is pivotally mounted relative to the seat, around an axis denoted A5.
  • the latter extends transversely, at the junction between the front end of the backrest and the rear end of the seat.
  • a cylinder 53 is provided, the body 54 of which is articulated on a yoke 56 provided on the underside of the backrest. Furthermore, the rod 55 of this actuator 53 is articulated on the seat plate.
  • each armrest 45 is mounted to slide from back to front relative to the seat.
  • a rod 66 which is articulated on a spar 48 secured to the armrest.
  • the leg rest 7 is capable of pivoting, relative to the seat 3, around an axis denoted A7.
  • the latter extends transversely, at the junction between the front end of the seat and the rear end of the leg rest. This movement is ensured by a cylinder 75, whose body 78 is mounted on bar 33, belonging to the seat, and whose rod 77 is articulated on bar 73.
  • control means making it possible to control the various movements described above.
  • two separate control members are provided, one of which is more particularly intended to be actuated by the patient, while the other is more particularly intended to be actuated by nursing staff.
  • a remote control 91 is provided, distinct from the button 90 above.
  • this remote control is of the wired type.
  • this remote control is received in a location that is easily accessible for the nursing staff, but on the other hand difficult to access for the patient.
  • a bellows 99 shown schematically, which is placed on the outer side of an armrest 45.
  • the functions which are capable of being provided by this remote control are, advantageously, those which are not permitted by the button 90. By way of example, these are in particular the adjustment of the height of the bed, the possibility of unlocking the lifting aid position, or the maneuver towards a transport position of the bed.
  • the remote control 91 can also be adapted to the implementation of functions, which are enabled by the button 90.
  • the control means also comprise a central control unit 92, represented schematically, which is connected both to the button 90 and the remote control 91, In Figure 1, there is illustrated the wired connection 93 between the remote control 91 and the central unit 92, the latter being in wireless communication! with the button 90.
  • This control unit 92 is itself connected, by schematic lines 95, with the means allowing the mutual displacement of the parts of the bed.
  • the control unit 92 is configured not only to activate or deactivate the displacement means, but also to ensure synchronization between some of these means.
  • bed I whose different constituent parts have just been detailed. It is assumed that the initial configuration is a horizontal position of the bed base, in which the seat 3, the backrest 5 and the legrest 7 are arranged in the extension of each other.
  • the arrows F materialize the movements from this elongated horizontal position, towards the opposite position of help with lifting.
  • the arrows f materialize the different movements, in the opposite direction.
  • the reference number of the mechanical elements which move is placed in Subscript each time.
  • the first movement is a bringing the backrest closer to the seat, according to the arrow F5.
  • This bringing together which corresponds to a pivoting of the backrest around its axis A5, is ensured by activating the actuator 53.
  • the control unit 92 makes it possible to synchronize this bringing together, with a second movement which is a folding of the wings 51 and 52, in the direction of the central core 50.
  • This folding corresponds to a pivoting of each wing around its respective axis A51 and A52, which is materialized by the arrows F51 and F52, by means of the activation of the cylinders 57 and 58.
  • the bed adopts an intermediate position known as patient relaxation.
  • patient relaxation By way of indicative, advantageous but non-limiting example (see Figure 5):
  • the angle a5 between the backrest and the seat is between 80 and 100°, in particular close to 90°;
  • the angle a7 between the leg rest and the seat is between 80 and 100°, in particular close to 90°;
  • the bed according to the invention can adopt an additional position called assistance to the lifting of the patient.
  • the seat must be tilted according to the arrow F”3.
  • the seat is tilted forwards relative to the horizontal.
  • the seat forms an angle a'3 with respect to the horizontal, which is advantageously between 20 and 40°, in particular close to 30°.
  • the footrest can fold up entirely in contact with the legrest, so that the angle a8 is substantially zero. This results in a compact configuration, which lends itself easily to storage or transport.
  • the seat is first tilted according to the dotted arrow f3 in Figure 7.
  • the footrest 8 then returns to its configuration perpendicular to the legrest 7, thanks to the elastic return means.
  • the entire bed base is tilted, according to the dotted arrow f'3 in figure 5, so as to return to the relaxation position.
  • the backrest 5 and the leg rest 7 are unfolded in relation to the seat, according to the dotted arrows f5 and 17 in figure 3, while tilting the seat according to the dotted arrow f'3 in this same figure 3.
  • Figure 10 illustrates additional features of the invention. It is first of all possible to lower or raise the seat and, consequently the whole of the bed base, with respect to the base. To this end, the rod 22 of the cylinder 20 is maneuvered upwards or downwards. In this case, the jack 23 can also be operated so that this rod 25 exerts the same action as the rod 22. Alternatively, this rod 25 can be of the driven type, i.e. it freely follows the movement of the rod 22.
  • Figure 10 illustrates the possibility of setting pro cleave in deciive of the entire bed. In this case, from a lying position in which the parts 3.5 and 7 are in the extension of each other, the seat is tilted relative to the base forwards or backwards.
  • the bed according to the invention has an overall mechanical structure, the complexity of which is less compared to most of the known solutions.
  • the invention makes it possible to dispense with an intermediate frame such as that described in FR 3 006 175.
  • the invention confers great safety on the various movements to which the patient is subjected between the extreme positions of the bed.
  • the presence of a support shell, formed by the backrest, is interesting because it avoids any risk of a side fall.
  • This security aspect is reinforced, advantageously, by the presence of 2 separate control devices. Indeed, the patient retains a certain autonomy since he can, by himself, carry out the least risky maneuvers. On the other hand, movements likely to cause the patient to fall are subject to the approval of the nursing staff.
  • FIG. 6 illustrates an advantageous option of the invention.
  • the bed I is equipped with a shelf 100, capable of including functionalities of a type known per se. These include the provision of a flat surface, to place a tray or the like, but also various storage in particular for drugs.
  • This shelf 100 is pivotally mounted around a vertical axis 102, itself supported by a junction piece 104 of bent shape. At its end opposite the axis 102, the junction piece is mounted integrally with the arms 18 and 19. Consequently, whatever the angular orientation of the various constituent parts of the bed, the upper surface of the shelf will be kept horizontal.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

The invention relates to a bed, in particular a medical bed, comprising a bottom part (1) intended to rest on the floor, an articulated bed base (3, 5, 7) comprising a seat (3), a backrest (5) and a leg support (7), first means (53) for pivoting the backrest with respect to the seat, second means (75) for pivoting the leg support with respect to the seat, as well as means (18, 19, 20) for raising/lowering the seat with respect to the bottom part. According to the invention, the bed also comprises tilting means (23, 26) which can tilt the seat with respect to the bottom part about a transverse axis (A3). The bed can thus occupy a position for helping the patient to get up, in which the patient can stand up safely. Furthermore, the bed according to the invention is less complex than most known solutions.

Description

LIT EQUIPE D’UN SOMMIER ARTICULE, COMPRENANT DES MOYENS D’AIDE A LA LEVEE DU PATIENT, ET SON PROCEDE DE MISE EN ŒUVRE BED EQUIPPED WITH AN ARTICULATED BASE, INCLUDING MEANS TO ASSIST THE PATIENT GETTING UP, AND METHOD FOR IMPLEMENTING IT

Domaine technique de l'invention Technical field of the invention

La présente invention concerne le domaine technique des lits à sommier articulé, en particulier de type médicalisé. Elle vise tout d’abord un lit à sommier articulé, qui comprend des moyens permettant d’assister le patient, afin de faciliter sa levée. Elle vise également un procédé de mise en œuvre de ce lit, incluant différentes étapes de déplacement du sommier articulé entre ses positions extrêmes. The present invention relates to the technical field of beds with an articulated base, in particular of the medical type. First of all, it is aimed at a bed with an articulated base, which includes means to assist the patient, in order to facilitate his lifting. It also relates to a method for implementing this bed, including different stages of movement of the articulated bed base between its extreme positions.

Etat de la technique State of the art

Lorsqu'une personne doit être alitée pendant de longues durées, en particulier du fait de son état physique, on conçoit qu'il est nécessaire que le sommier du lit puisse être articulé. Cela permet d’une part d’amener le patient dans certaines positions, où il est plus facile de lui prodiguer certains soins. D’autre part, le fait de pouvoir occuper différentes postures est bénéfique pour le confort général du patient. When a person has to be bedridden for long periods, in particular because of his physical condition, it is conceivable that it is necessary for the bed base to be able to be articulated. On the one hand, this allows the patient to be brought into certain positions, where it is easier to provide certain care. On the other hand, being able to occupy different postures is beneficial for the general comfort of the patient.

Dans cet esprit, on connaît des lits médicalisés dont 1e sommier articulé repose sur une embase prenant appui sur le sol, laquelle peut être déplacée par des roulettes ou analogues. Le sommier est formé par différentes parties constitutives, mutuellement articulées autour d’axes généralement transversaux. De la sorte le patient peut être déplacé entre des positions extrêmes respectivement allongée et assise, tout en pouvant le cas échéant adopter d’autres positions intermédiaires. In this spirit, there are known medical beds whose first articulated base rests on a base resting on the ground, which can be moved by wheels or the like. The windchest is formed by different constituent parts, mutually articulated around generally transverse axes. In this way, the patient can be moved between extreme positions lying down and sitting respectively, while being able to adopt other intermediate positions if necessary.

On a également proposé des lits, qui sont susceptibles d'adopter une position supplémentaire dite d’aide à la levée. Dans cette configuration, le buste du patient se trouve relevé et placé légèrement vers l’avant. De la sorte, le patient peut quitter le lit de façon plus aisée, moyennant une assistance éventuelle de la part du personnel médical. Beds have also been proposed, which are capable of adopting an additional position called a lifting aid. In this configuration, the patient's chest is raised and placed slightly forward. In this way, the patient can leave the bed more easily, subject to possible assistance from the medical personnel.

EP 2 308 442 décrit un lit, dont le sommier possède un dossier à configuration variable. En substance ce dossier est formé par un châssis ainsi qu’un support mobile, qui peut être déplacé par rapport au châssis grâce à un parallélogramme déformable. Lorsque le patient est assis, ce parallélogramme est actionné de sorte que le support est repoussé vers l’avant. Le patient est par conséquent accompagné jusqu’à une position pratiquement debout, lui permettant de quitter le lit. Cete première solution implique cependant certains inconvénients, liés à la complexité structurelle du lit En effet, lorsque le patient est placé dans sa position d’aide à la levée, le lit adopte une position de porte-à-faux, susceptible de créer une instabilité et donc un danger pour le patient. Il est donc nécessaire d’équiper ce lit avec un nombre significatif d’éléments mécaniques, permettant de garantir la stabilité du lit durant son fonctionnement. Cela entraîne donc une complexification de ce lit médicalisé, accompagnée d’une augmentation de son prix de revient. EP 2 308 442 describes a bed, the base of which has a backrest with variable configuration. In essence, this file is formed by a frame as well as a mobile support, which can be moved relative to the frame thanks to a deformable parallelogram. When the patient is seated, this parallelogram is actuated so that the support is pushed forward. The patient is therefore accompanied to a practically upright position, allowing him to leave the bed. This first solution, however, involves certain drawbacks, linked to the structural complexity of the bed. In fact, when the patient is placed in his position to help him get up, the bed adopts a cantilevered position, liable to create instability. and therefore a danger to the patient. It is therefore necessary to equip this bed with a significant number of mechanical elements, making it possible to guarantee the stability of the bed during its operation. This therefore leads to a more complex nature of this medical bed, accompanied by an increase in its cost price.

Afin de remédier à ces inconvénients, FR 3006 175 a proposé un lit équipé d’un châssis supérieur, mobile par rapport à l’embase, sur lequel repose le sommier articulé. De façon plus précise, ce châssis supérieur peut tout d’abord être élevé, abaissé ou inciiné par rapport à l’embase. Par ailleurs, il est monté en translation selon l’axe longitudinal de cette embase. De la sorte, le sommier peut être amené vers le pied du lit de façon à accompagner la levée du patient, sans cependant modifier la position des appuis de l’embase sur le sol. In order to remedy these drawbacks, FR 3006 175 has proposed a bed equipped with an upper frame, movable relative to the base, on which the articulated bed base rests. More precisely, this upper frame can first be raised, lowered or incinerated with respect to the base. Furthermore, it is mounted in translation along the longitudinal axis of this base. In this way, the bed base can be brought towards the foot of the bed so as to accompany the lifting of the patient, without however modifying the position of the supports of the base on the floor.

Cette solution alternative implique également des inconvénients spécifiques. En effet, le lit médicalisé décrit dans ce brevet français présente aussi une structure complexe. En particulier le châssis supérieur est de grande longueur, puisqu’il s’étend sur sensiblement l’intégralité du lit. On conçoit par conséquent qu’il est nécessaire de dimensionner en conséquence les moyens de déplacement, entre l’embase et le châssis supérieur. This alternative solution also involves specific drawbacks. Indeed, the medical bed described in this French patent also has a complex structure. In particular, the upper frame is very long, since it extends over substantially the entire bed. It is therefore conceivable that it is necessary to size the means of movement accordingly, between the base and the upper chassis.

Enfin on connaît, par US 2014 265497, US 2014 157 515 et US 2003 093 863, différents lits pliants susceptibles de permettre aux patients d'accéder à la position debout. Néanmoins les agencements présentés dans ces documents ne sont pas totalement satisfaisants, notamment en ce qu’ils n’assurent pas une aide à la levée en toute sécurité du patient. Finally, from US 2014 265497, US 2014 157 515 and US 2003 093 863, various folding beds capable of allowing patients to access the standing position are known. Nevertheless, the arrangements presented in these documents are not completely satisfactory, in particular in that they do not provide assistance in lifting the patient in complete safety.

Compte tenu de ce qui précède, un objectif de la présente invention est de remédier, au moins partiellement, aux inconvénients de l’art antérieur évoqués ci-dessus. In view of the foregoing, an objective of the present invention is to remedy, at least partially, the drawbacks of the prior art mentioned above.

Un autre objectif de l’invention est en particulier de proposer un lit médicalisé, présentant une configuration qui assiste la levée du patient, de manière commode et en toute sécurité. Another object of the invention is in particular to provide a medical bed, having a configuration which assists the lifting of the patient, in a convenient and safe manner.

Un autre objectif de l’invention est de proposer un tel lit médicalisé, qui est susceptible d’assurer un maintien latéral du patient, de façon fiable et progressive. Un autre objectif de l’invention est de proposer un tel lit médicalisé dont les mouvements peuvent être commandés de manière à la fois simple et sécuritaire, non seulement par le patient lui-même mais également par le personnel hospitalier. Another object of the invention is to provide such a medical bed, which is capable of providing lateral support for the patient, in a reliable and progressive manner. Another object of the invention is to provide such a medical bed, the movements of which can be controlled in a way that is both simple and safe, not only by the patient himself but also by the hospital staff.

Objets de l’invention Objects of the invention

Selon l’invention, au moins un des objectifs ci-dessus est atteint au moyen d’un lit (i), en particulier de type médicaiisé, comprenant une embase (1) destinée à reposer sur le soi, ainsi qu’un sommier articulé (3, 5, 7), monté sur ladite embase, ce sommier comprenant une partie centrale formant assise (3), une partie supérieure formant dossier (5), ainsi qu'une partie inférieure formant relève jambes (7), des premiers moyens de pivotement (53) qui sont aptes à faire pivoter le dossier par rapport à l’assise des seconds moyens de pivotement (75) qui sont aptes à faire pivoter le relève jambes par rapport à l’assise des moyens (18,19, 20) d’élévation/abalssement de l’assise par rapport à l’embase ce lit étant caractérisé en ce qu’il comprend en outre des moyens de basculement (23, 28), qui sont aptes à faire basculer l’assise par rapport à l’embase, autour d’un axe transversal (A3), de sorte que le lit est apte à adopter une position dite d’aide à la levée du patient, position dans laquelle l’assise est basculée vers l’avant par rapport à un axe horizontal, le dossier étant dans une position relevée. According to the invention, at least one of the above objectives is achieved by means of a bed (i), in particular of the medicalized type, comprising a base (1) intended to rest on the ground, as well as an articulated bed base (3, 5, 7), mounted on said base, this bed base comprising a central part forming a seat (3), an upper part forming a backrest (5), as well as a lower part forming a leg rest (7), first means (53) which are capable of pivoting the backrest with respect to the seat of the second pivoting means (75) which are capable of causing the leg rest to pivot with respect to the seat of the means (18, 19, 20 ) elevation / lowering of the seat relative to the base, this bed being characterized in that it further comprises tilting means (23, 28), which are capable of tilting the seat relative to the base, around a transverse axis (A3), so that the bed is capable of adopting a so-called patient lifting aid position, a position in which it the seat is tilted forward in relation to a horizontal axis, the backrest being in a raised position.

Selon d’autres caractéristiques du lit conforme à l’invention : According to other characteristics of the bed according to the invention:

- en vue de côté, l’axe transversal de basculement (A3) est situé entre les extrémités longitudinales opposées de l’assise, dans une position sensiblement horizontale de cette dernière. - in side view, the transverse tilting axis (A3) is located between the opposite longitudinal ends of the seat, in a substantially horizontal position of the latter.

- le lit comprend en outre une platine (4) supportée par au moins une partie (18, 19) des moyens d’élévation/abaissement, l’orientation de l'axe longitudinal (X4) de cette platine, par rapport à l’embase, étant sensiblement constante en service. - the bed further comprises a plate (4) supported by at least a part (18, 19) of the raising/lowering means, the orientation of the longitudinal axis (X4) of this plate, with respect to the base, being substantially constant in service.

- les moyens de basculement comprennent un vérin de basculement (23), dont le corps est monté sur la platine (4) et dont la tige (25) est articulée sur l’assise, avec interposition éventuelle d’une bielle (28). - the tilting means comprise a tilting cylinder (23), the body of which is mounted on the plate (4) and the rod (25) of which is articulated on the seat, with the possible interposition of a connecting rod (28).

- le dossier (5) comprend une région centrale formant une âme (50), ainsi que des régions latérales formant des allés (51,52), et il est prévu des moyens de déplacement (57,58), aptes à déplacer chaque aile par rapport à la région centrale de façon à former une coque de maintien latéral pour le patient. - Se lit comprend en outre des moyens de commande (90, 91, 92), qui sont aptes à commander tout ou partie des moyens de basculement, des moyens d’élévation/abaissement et des moyens de déplacement. - the backrest (5) comprises a central region forming a core (50), as well as lateral regions forming aisles (51,52), and displacement means (57,58) are provided, able to move each wing relative to the central region so as to form a lateral support shell for the patient. - Reads further comprises control means (90, 91, 92), which are able to control all or part of the tilting means, raising / lowering means and moving means.

- les moyens de commande sont configurés pour synchroniser les moyens de basculement de l’assise, avec les moyens de déplacement des ailes du dossier. - the control means are configured to synchronize the means for tilting the seat, with the means for moving the wings of the backrest.

- les moyens de commande comprennent un premier organe de commande (90) susceptible d’être manœuvré par le patient, apte à remplir une première gamme de fonctions, ce premier organe de commande étant avantageusement monté mobile en translation longitudinale par rapport à l’assise, sous l’effet du pivotement du dossier par rapport à l’assise - the control means comprise a first control member (90) capable of being operated by the patient, capable of fulfilling a first range of functions, this first control member being advantageously mounted movable in longitudinal translation relative to the seat , under the effect of the pivoting of the backrest with respect to the seat

- les moyens de commande comprennent en outre un second organe de commande (91), susceptible d’être manœuvré par le personnel soignant, ce second organe de commande étant apte à rempiir une seconde gamme de fonctions, distincte de ladite première gamme.- the control means further comprise a second control member (91), capable of being operated by the nursing staff, this second control member being capable of fulfilling a second range of functions, distinct from said first range.

- le relève jambes (7) est terminé, à l’opposé de l’assise, par un repose pieds (8) possédant une position dite de repos par rapport au relève jambes en l’absence de contraintes extérieures, ce repose pieds (8) étant apte à pivoter par rapport au relève jambes uniquement dans le sens de la flexion sous l’effet d’une contrainte mécanique extérieure- the legrest (7) is terminated, opposite the seat, by a footrest (8) having a so-called resting position relative to the legrest in the absence of external constraints, this footrest (8 ) being capable of pivoting relative to the legrest only in the direction of flexion under the effect of an external mechanical stress

- il est prévu des moyens de rappel permettant de rappeler ce repose pieds dans la position de repos. - Return means are provided for recalling this footrest to the rest position.

- dans la position d’aide à la levée l’assise est basculée vers l’avant par rapport à l’axe horizontal selon un angle (a’3) compris entre 20° et 40°, notamment voisin de 30°, le dossier étant maintenu sensiblement à la verticale, alors que l’angle (a7) entre le relève jambes et l’assise est compris entre 80° et 100°, notamment voisin de 90°. - in the lifting aid position, the seat is tilted forward with respect to the horizontal axis at an angle (a'3) of between 20° and 40°, in particular close to 30°, the backrest being maintained substantially vertically, while the angle (a7) between the leg rest and the seat is between 80° and 100°, in particular close to 90°.

Ces caractéristiques additionnelles peuvent être mises en œuvre avec le premier objet principal ci-dessus, individuellement ou en combinaisons quelconques, techniquement compatibles. These additional characteristics can be implemented with the first main object above, individually or in any technically compatible combinations.

L’invention a également pour objet un procédé de mise en œuvre du lit ci-dessus, procédé dans lequel, à partir d’une position allongée dans laquelle l’assise, le dossier et le relève jambes sont sensiblement dans le prolongement les uns des autres : The invention also relates to a method for implementing the above bed, a method in which, from an elongated position in which the seat, the backrest and the legrest are substantially in the extension of each others :

- on déplace l’assise, le dossier et le relève jambes jusqu’à une position dite de relaxation, moyennant un pivotement du dossier par rapport à l’assise, un pivotement du relève jambe par rapport à l’assise, et un basculement vers l’arrière de l’assise autour de son axe de basculement - on déplace l’assise, le dossier et le relève jambes jusqu’à une position dite assise, moyennant basculement vers l’avant de l'assise autour de son axe de basculement, tout en maintenant le dossier ainsi que le relève jambes sensiblement immobiles par rapport à cette assise. - the seat, the backrest and the leg rest are moved to a so-called relaxation position, by means of a pivoting of the backrest relative to the seat, a pivoting of the leg rest relative to the seat, and a tilting towards the back of the seat around its tilting axis - the seat, the backrest and the legrest are moved to a so-called sitting position, by tilting the seat forward around its tilting axis, while keeping the backrest and the legrest substantially immobile relative to this seat.

Selon d’autres caractéristiques du procédé de mise en œuvre conforme à l’invention ;According to other characteristics of the method of implementation in accordance with the invention;

- on fait à nouveau basculer l’assise autour de son axe de basculement vers l’avant, de manière à atteindre une position dite d’aide à la levée - the seat is tilted again around its tilting axis forwards, so as to reach a so-called lifting aid position

- on plaque le repose pieds contre le sol, dans la position d’aide à la levée, moyennant flexion de ce repose pieds par rapport au relève jambes. - the footrest is pressed against the ground, in the lifting aid position, by bending this footrest in relation to the leg rest.

Ces caractéristiques additionnelles peuvent être mises en œuvre avec le second objet principal ci-dessus, Individuellement ou en combinaisons quelconques, techniquement compatibles. These additional characteristics can be implemented with the second main object above, individually or in any combination, technically compatible.

Description des figures Description of figures

L’invention va être décrite ci-après, en référence aux dessins annexés, donnés uniquement à titre d’exemples non limitatifs, dans lesquels : The invention will be described below, with reference to the appended drawings, given solely by way of non-limiting examples, in which:

[Fig. 1] est une vue en perspective, illustrant un lit conforme à l’invention dans sa position dite allongée, avec un sommier abaissé au voisinage de son embase. [Fig. 1] is a perspective view, illustrating a bed according to the invention in its so-called extended position, with a lowered bed base in the vicinity of its base.

[Fig. 2] est une vue en perspective, illustrant le lit dans sa position allongée avec un sommier relevé par rapport à l’embase. [Fig. 2] is a perspective view, illustrating the bed in its extended position with a raised base in relation to the base.

[Fig. 3] est une vue schématique de côté, illustrant la position allongée du lit. [Fig. 3] is a schematic side view, illustrating the lying position of the bed.

[Fig. 4] est une vue en perspective, Illustrant le lit dans une position intermédiaire dite de relaxation. [Fig. 4] is a perspective view, illustrating the bed in an intermediate so-called relaxation position.

[Fig. 5] est une vue schématique de côté, illustrant cette position de relaxation. [Fig. 5] is a schematic side view illustrating this relaxation position.

[Fig. 6] est une vue en perspective, illustrant le lit dans une position dite assise. [Fig. 6] is a perspective view, illustrating the bed in a so-called seated position.

[Fig. 7] est une vue schématique de côté, illustrant cette position assise. [Fig. 7] is a schematic side view, illustrating this seated position.

[Fig. 8] est une vue en perspective, illustrant Se lit dans une position dite d’aide à la levée du patient. [Fig. 8] is a perspective view, illustrating Se reads in a so-called patient lifting position.

[Fig. 9] est une vue schématique de côté, illustrant cette position d’aide à la levée. [Fig. 9] is a schematic side view, illustrating this lifting aid position.

[Fig. 10] est une vue en perspective, Illustrant le lit dans une position dite de déclive. [Fig. 10] is a perspective view, illustrating the bed in a so-called sloping position.

[Fig. 11] est une vue en perspective, illustrant depuis l’arrière le lit dans sa position assise. [Fig. 12] est une vue schématique de dessus, illustrant le dossier du lit dans une configuration où il forme une coque de maintien latéral du patient. [Fig, 13] est une vue de côté, illustrant les moyens de déplacement de l’assise par rapport à l'embase du lit, dans la position abaissée de la ligure 1 [Fig. 11] is a perspective view, illustrating the bed from behind in its seated position. [Fig. 12] is a schematic top view, illustrating the backrest of the bed in a configuration where it forms a lateral support shell for the patient. [Fig, 13] is a side view, illustrating the means for moving the seat relative to the base of the bed, in the lowered position of Figure 1

[Fig. 14] est une vue de côté analogue à la figure 13, illustrant ces moyens de déplacement dans la position relevée de la figure 3, [Fig. 14] is a side view similar to Figure 13, illustrating these displacement means in the raised position of Figure 3,

[Fig. 15] est une vue de côté analogue aux figures 13 et 14, mais depuis le côté opposé, illustrant l'utilisation des moyens de déplacement pour basculer rassise dans un premier sens. [Fig. 15] is a side view similar to FIGS. 13 and 14, but from the opposite side, illustrating the use of the moving means to tilt stale in a first direction.

[Fig. 16] est une vue de côté analogue à la figure 15, illustrant l’utilisation des moyens de déplacement pour basculer l’assise dans le sens opposé. [Fig. 16] is a side view similar to Figure 15, illustrating the use of moving means to tilt the seat in the opposite direction.

[Fig. 17] est une vue en perspective, illustrant le lit depuis l’avant dans une configuration de relaxation. [Fig. 17] is a perspective view, showing the bed from the front in a relaxation configuration.

[Fig. 18] est une vue à plus grande échelle, du détail XVIII de la figure 17. [Fig. 18] is a larger scale view of detail XVIII in figure 17.

Description détaillée detailed description

Dans ce qui suit, on suppose que le lit repose sur un sol horizontal. Par convention, les termes « avant » et « arrière » sont relatifs respectivement au pied du lit en configuration allongée, ainsi qu’à la tête de ce lit dans cette même configuration. Par convention encore, les termes « longitudinal » et « transversal » sont relatifs à la dimension principale du lit en configuration allongée. In the following, it is assumed that the bed rests on a horizontal floor. By convention, the terms "front" and "rear" relate respectively to the foot of the bed in the extended configuration, as well as to the head of this bed in this same configuration. Again by convention, the terms “longitudinal” and “transverse” relate to the main dimension of the bed in the elongated configuration.

Le lit conforme à l'invention, qui est désigné dans son ensemble par la référence I, est plus spécifiquement mais non exclusivement destiné à une appiication médicalisée. En particulier, il est bien adapté à un accueil de patients qui, du fait de leur âge ou bien de leur pathologie, sont astreints à un alitement de longue durée. The bed according to the invention, which is designated as a whole by the reference I, is more specifically but not exclusively intended for medical application. In particular, it is well suited to receiving patients who, because of their age or their pathology, are forced to stay in bed for a long time.

Ce lit est formé par une embase 1 , ainsi que par un sommier articulé qui est destiné à recevoir un matelas y, représenté sur certaines des figures. Ce sommier comprend essentiellement une partie centrale 3 formant assise, une partie supérieure formant dossier 5, une partie inférieure formant relève jambes 7, ainsi qu’une partie d’extrémité formant repose pieds 8. On va dans un premier temps décrire les pièces de structure principales, relatives à chacune de ces parties constitutives. This bed is formed by a base 1, as well as by an articulated bed base which is intended to receive a mattress y, shown in some of the figures. This bed base essentially comprises a central part 3 forming a seat, an upper part forming a backrest 5, a lower part forming a leg rest 7, as well as an end part forming a footrest 8. We will first describe the structural parts principal, relating to each of these constituent parts.

L'embase 1 comporte tout d’abord une ossature tubulaire 10. Cette dernière est formée par des longerons 11, des traverses 12, ainsi que des barres de renfort obliques 13. Ces différentes pièces sont entourées par un carter périphérique 14. Cette embase est destinée à reposer sur le sol, en étant fixe ou bien mobile par rapport à celui-ci. Dans le présent exemple de réalisation, il est prévu des roulettes 15 permettant le déplacement de l’embase et, par conséquent, de l’ensemble du lit. Ces roulettes peuvent avantageusement être associées à des blocages mécaniques non représentés, permettant d’immobiliser le lit dans une position souhaitée. The base 1 firstly comprises a tubular frame 10. The latter is formed by longitudinal members 11, crosspieces 12, as well as oblique reinforcing bars 13. These various parts are surrounded by a peripheral casing 14. This base is intended to rest on the ground, being fixed or mobile with respect to it. In the present exemplary embodiment, castors 15 are provided allowing movement of the base and, consequently, of the entire bed. These rollers can advantageously be associated with mechanical locks, not shown, making it possible to immobilize the bed in a desired position.

L’assise 3 comporte tout d’abord un cadre tubulaire 30, de forme rectangulaire. Ce dernier est formé par des longerons 31 , ainsi que des traverses 32. Ce cadre repose sur une platine 4, laquelle est portée par l’extrémité supérieure des bras 18 et 19. Cette assise est en outre équipée au moyen d’accoudoirs latéraux 45, qui sont fixés sur des plaques respectives 46. Comme on le verra plus en détail dans ce qui suit, ces plaques et ces accoudoirs sont susceptibles de coulisser par rapport au cadre 30 de l’assise 3, selon une direction longitudinale. The seat 3 first comprises a tubular frame 30, of rectangular shape. The latter is formed by beams 31, as well as crosspieces 32. This frame rests on a plate 4, which is carried by the upper end of the arms 18 and 19. This seat is further equipped by means of side armrests 45 , which are fixed to respective plates 46. As will be seen in more detail below, these plates and these armrests are slidable relative to the frame 30 of the seat 3, in a longitudinal direction.

Le dossier 5 comprend tout d’abord une partie centrale, formant une âme 50. Cette dernière possède un profil trapézoïdal, dont le grand côté s’étend horizontalement en partie basse. Cette âme 50 est bordée par des parties latérales, formant des ailes 51 et 52 de profil triangulaire. The backrest 5 firstly comprises a central part, forming a core 50. The latter has a trapezoidal profile, the long side of which extends horizontally in the lower part. This core 50 is bordered by side parts, forming wings 51 and 52 of triangular profile.

Le relève jambes 7 possède un cadre rectangulaire 70, formé par des longerons 71 et des traverses 72. SI est par ailleurs prévu une barre de renfort transversale 73. Enfin le repose pieds 8 est typiquement formé par une plaque, réalisée en tout matériau approprié. Comment le verra dans ce qui suit, ce matériau doit notamment assurer une rigidité suffisante à la plaque lorsqu’elle prend appui sur le sol, en particulier dans la position d’aide à la levée. The legrest 7 has a rectangular frame 70, formed by side members 71 and crosspieces 72. SI is also provided a transverse reinforcing bar 73. Finally the footrest 8 is typically formed by a plate, made of any suitable material. As will be seen in what follows, this material must in particular provide sufficient rigidity to the plate when it rests on the ground, in particular in the lifting aid position.

On va maintenant décrire les différents moyens mécaniques, permettant les déplacements mutuels des différentes pièces constitutives ci-dessus. We will now describe the various mechanical means, allowing the mutual displacements of the various constituent parts above.

L’assise 3 est tout d’abord mobile par rapport à l’embase 1, à la fois en élévation et abaissement, ainsi qu’en basculement. En vue de l’élévation/abaissement, il est prévu un premier vérin 20 dont le corps 21 est articulé sur l’ossature de l’embase autour d’un axe transversal A21 , alors que sa tige 22 est articulée sur la platine de l’assise autour d’un autre axe transversal A22. Ce vérin coopère avec deux bras 18 et 19, dont les premières extrémités sont montées sur des fiasques 17 de l’ossature, alors que les extrémités opposées sont montées sur des fiasques 39 appartenant à la platine de l’assise. Pour assurer le basculement de l’assise par rapport à l’embase, on prévoit un second vérin 23. Celui-ci possède tout d’abord un corps 24, qui est articulé sur la platine 4 autour d’un axe transversal A24. Par ailleurs, la tige 25 du vérin 23 est articulée sur une bielle 26, qui est elle-même articulée à son extrémité opposée sur l’assise 3 autour d’un axe transversal A26. On note A3 l’axe transversal de basculement de l’assise, par rapport à l’embase. Comme le montrent notamment les figures 15 et 16, en vue de côté cet axe de basculement A3 est situé entre les extrémités avant et arrière de l’assise, dans une position sensiblement horizontale de ces dernières. The seat 3 is first of all mobile with respect to the base 1, both in raising and lowering, as well as in tilting. For raising/lowering, there is provided a first cylinder 20, the body 21 of which is articulated on the frame of the base around a transverse axis A21, while its rod 22 is articulated on the plate of the sitting around another transverse axis A22. This cylinder cooperates with two arms 18 and 19, the first ends of which are mounted on flanges 17 of the frame, while the opposite ends are mounted on flanges 39 belonging to the plate of the seat. To ensure the tilting of the seat with respect to the base, a second cylinder 23 is provided. This first has a body 24, which is articulated on the plate 4 around a transverse axis A24. Furthermore, the rod 25 of the cylinder 23 is articulated on a connecting rod 26, which is itself articulated at its opposite end on the seat 3 around a transverse axis A26. Note A3 the transverse axis of tilting of the seat, relative to the base. As shown in particular in Figures 15 and 16, in side view this tilting axis A3 is located between the front and rear ends of the seat, in a substantially horizontal position of the latter.

Le dossier 5 est monté pivotant par rapport à l’assise, autour d’un axe noté A5. Ce dernier s’étend transversalement, à la jonction entre l’extrémité avant du dossier et l’extrémité arrière de l'assise. Afin d’assurer ce pivotement, il est prévu un vérin 53, dont le corps 54 est articulé sur une chape 56 prévue sur fa face inférieure du dossier. Par ailleurs, la tige 55 de ce vérin 53 est articulée sur la platine de l’assise. The backrest 5 is pivotally mounted relative to the seat, around an axis denoted A5. The latter extends transversely, at the junction between the front end of the backrest and the rear end of the seat. In order to ensure this pivoting, a cylinder 53 is provided, the body 54 of which is articulated on a yoke 56 provided on the underside of the backrest. Furthermore, the rod 55 of this actuator 53 is articulated on the seat plate.

Chaque aile est montée pivotante, par rapport à l’âme 50, autour d'un axe respectif A51 et A52. Chaque axe, qui est indus dans Se plan global de l’âme, s'étend de façon oblique en référence à l’axe longitudinal. Pour assurer la mise en mouvement des ailes, deux vérins 57 et 58 sont prévus. Chacun de ces vérins possède un corps 59,60, monté sur la chape précitée 56, ainsi qu’une tige 61,62 articulée sur une bride 63,64 montée sur une bride respective. Each wing is pivotally mounted, with respect to the web 50, around a respective axis A51 and A52. Each axis, which is included in the overall plane of the web, extends obliquely with reference to the longitudinal axis. To ensure the movement of the wings, two cylinders 57 and 58 are provided. Each of these cylinders has a body 59,60, mounted on the aforementioned yoke 56, as well as a rod 61,62 articulated on a flange 63,64 mounted on a respective flange.

Comme on l'a vu ci-dessus, chaque accoudoir 45 est monté coulissant d’arrière en avant par rapport à l’assise. À cet effet, de chaque côté du dossier, il est prévu une biellette 66, laquelle est articulée sur un longeron 48 solidaire de l’accoudoir. As seen above, each armrest 45 is mounted to slide from back to front relative to the seat. To this end, on each side of the backrest, there is provided a rod 66, which is articulated on a spar 48 secured to the armrest.

Le relève jambes 7 est apte à pivoter, par rapport à l’assise 3, autour d’un axe noté A7. Ce dernier s’étend transversalement, à la jonction entre l’extrémité avant de l’assise et l’extrémité arrière du repose jambes. Ce mouvement est assuré par un vérin 75, dont le corps 78 est monté sur la barre 33, appartenant à l’assise, et dont la tige 77 est articulée sur la barre 73. The leg rest 7 is capable of pivoting, relative to the seat 3, around an axis denoted A7. The latter extends transversely, at the junction between the front end of the seat and the rear end of the leg rest. This movement is ensured by a cylinder 75, whose body 78 is mounted on bar 33, belonging to the seat, and whose rod 77 is articulated on bar 73.

Le repose pieds 8 est équipé de moyens de rappel, non représentés, typiquement élastiques. Ces moyens mécaniques permettent de rappeler le repose pieds dans une configuration prédéterminée, typiquement à 90° par rapport au relève jambes 7. Par ailleurs, ce repose pieds est propre à pivoter par rapport au relève jambes, autour de l’axe transversal A8, De façon avantageuse, ce pivotement peut s’effectuer selon un unique sens, qui correspond à la flexion du repose pieds. Dans ce cas, l’angle entre les pièces 7 et 8 est inférieur à 90°. Un tel pivotement est réalisé, lorsqu’une force supérieure à une valeur donnée s’exerce sur la face inférieure du repose pieds. Lorsque cette force devient inférieure à une telle valeur, voire s’annule, le repose pieds retrouve sa position originelle sous l’effet des moyens de rappel. The footrest 8 is equipped with return means, not shown, typically elastic. These mechanical means make it possible to return the footrest to a predetermined configuration, typically at 90° with respect to the legrest 7. Furthermore, this footrest is capable of pivoting with respect to the legrest, around the axis transverse A8, Advantageously, this pivoting can take place in a single direction, which corresponds to the flexion of the footrest. In this case, the angle between parts 7 and 8 is less than 90°. Such pivoting is achieved when a force greater than a given value is exerted on the underside of the footrest. When this force becomes less than such a value, or even cancels out, the footrest returns to its original position under the effect of the return means.

On va maintenant décrire les moyens de commande, permettant de piloter les différents déplacements décrits ci-dessus. De manière avantageuse on prévoit deux organes de commande distincts, dont l’un est plus particulièrement destiné à être actionné par le patient, alors que l’autre est plus particulièrement destiné à être actionné par un personnel soignant. We will now describe the control means, making it possible to control the various movements described above. Advantageously, two separate control members are provided, one of which is more particularly intended to be actuated by the patient, while the other is more particularly intended to be actuated by nursing staff.

Comme le montre notamment la figure 1 , un bouton de commande 90 est tout d’abord prévu sur au moins l’un des accoudoirs 45. De façon typique, ce bouton permet uniquement de déplacer le lit entre ses positions respectivement allongée et assise, qui vont être décrites ci-après. Étant donné que l’accoudoir est libre de se déplacer le long de l’assise, lors du pivotement du dossier, ce bouton de commande est en permanence accessible pour le patient, de façon commode. As shown in particular in Figure 1, a control button 90 is first of all provided on at least one of the armrests 45. Typically, this button only allows the bed to be moved between its lying and sitting positions respectively, which will be described below. Since the armrest is free to move along the seat when pivoting the backrest, this control button is always conveniently accessible to the patient.

Par ailleurs il est prévu une télécommande 91, distincte du bouton 90 ci-dessus, De façon typique, cette télécommande est de type filaire. Elle est par exemple reçue dans un emplacement, aisément accessible pour le personnel soignant, mais en revanche difficile d’accès pour le patient. On choisira par exemple de loger cete télécommande dans un soufflet 99, montré de manière schématique, qui est placé sur le côté extérieur d’un accoudoir 45. Furthermore, a remote control 91 is provided, distinct from the button 90 above. Typically, this remote control is of the wired type. For example, it is received in a location that is easily accessible for the nursing staff, but on the other hand difficult to access for the patient. We will choose for example to house this remote control in a bellows 99, shown schematically, which is placed on the outer side of an armrest 45.

Les fonctions qui sont susceptibles d'être assurées par cette télécommande sont, de manière avantageuse, celles qui ne sont pas permises par le bouton 90. À titre d’exemple, il s’agit notamment du réglage de la hauteur du lit, de la possibilité de déverrouiller la position d’aide à la levée, ou encore la manœuvre vers une position de transport du lit. La télécommande 91 peut également être adaptée à la mise en œuvre des fonctions, qui sont autorisés par le bouton 90. The functions which are capable of being provided by this remote control are, advantageously, those which are not permitted by the button 90. By way of example, these are in particular the adjustment of the height of the bed, the possibility of unlocking the lifting aid position, or the maneuver towards a transport position of the bed. The remote control 91 can also be adapted to the implementation of functions, which are enabled by the button 90.

Les moyens de commande comprennent également une unité centrale de commande 92, représenté de façon schématique, laquelle est reliée à la fois au bouton 90 et la télécommande 91, Sur la figure 1 , on a illustré la liaison filaire 93 entre la télécommande 91 et l’unité centrale 92, cette dernière étant en communication sans fl! avec le bouton 90. Cette unité de commande 92 est elle-même reliée, par des lignes schématiques 95, avec les moyens permettant le déplacement mutuel des pièces du lit. Comme cela sera décrit dans plus en détail dans ce qui suit, l’unité de commande 92 est configurée, non seulement pour activer ou bien désactiver les moyens de déplacement, mais également pour assurer une synchronisation entre certains de ces moyens. The control means also comprise a central control unit 92, represented schematically, which is connected both to the button 90 and the remote control 91, In Figure 1, there is illustrated the wired connection 93 between the remote control 91 and the central unit 92, the latter being in wireless communication! with the button 90. This control unit 92 is itself connected, by schematic lines 95, with the means allowing the mutual displacement of the parts of the bed. As will be described in more detail below, the control unit 92 is configured not only to activate or deactivate the displacement means, but also to ensure synchronization between some of these means.

On va maintenant expliciter la mise en œuvre du lit I, dont les différentes parties constitutives viennent d’être détaillées. On suppose que la configuration initiale est une position horizontale du sommier, dans laquelle l'assise 3, le dossier 5 ainsi que le relève jambes 7 sont disposés dans le prolongement les uns des autres. Dans ce qui suit les flèches F matérialisent les déplacements depuis cette position horizontale allongée, vers la position opposée d’aide à la levée, Par ailleurs les flèches f matérialisent les différents déplacements, dans le sens opposé. Pour les différentes flèches F et f, on place à chaque fois en Indice le numéro de référence des éléments mécaniques qui se déplacent. We will now explain the implementation of bed I, whose different constituent parts have just been detailed. It is assumed that the initial configuration is a horizontal position of the bed base, in which the seat 3, the backrest 5 and the legrest 7 are arranged in the extension of each other. In what follows, the arrows F materialize the movements from this elongated horizontal position, towards the opposite position of help with lifting. In addition, the arrows f materialize the different movements, in the opposite direction. For the various arrows F and f, the reference number of the mechanical elements which move is placed in Subscript each time.

Dans un premier temps, il s’agit de manœuvrer un des organes de commande afin de mettre en mouvement l’assise, le dossier et le relève jambes. De manière typique, le déplacement depuis la position allongée vers la position assise est initié par le patient lui- même, par action sur ie bouton de commande 90. Cela induit quatre mouvements différents, qui vont être détaillés ci-après. Initially, it is a question of maneuvering one of the control devices in order to set the seat, the backrest and the leg rest in motion. Typically, the movement from the lying position to the sitting position is initiated by the patient himself, by action on the control button 90. This induces four different movements, which will be detailed below.

Le premier mouvement est un rapprochement du dossier par rapport à l’assise, selon la flèche F5. Ce rapprochement, qui correspond à un pivotement du dossier autour de son axe A5, est assuré moyennant activation du vérin 53. L’unité de commande 92 permet de synchroniser ce rapprochement, avec un second mouvement qui est un repli des ailes 51 et 52, en direction de l’âme centrale 50. Ce repli correspond à un pivotement de chaque aile autour de son axe respectif A51 et A52, qui est matérialisé par les flèches F51 et F52, moyennant l’activation des vérins 57 et 58. The first movement is a bringing the backrest closer to the seat, according to the arrow F5. This bringing together, which corresponds to a pivoting of the backrest around its axis A5, is ensured by activating the actuator 53. The control unit 92 makes it possible to synchronize this bringing together, with a second movement which is a folding of the wings 51 and 52, in the direction of the central core 50. This folding corresponds to a pivoting of each wing around its respective axis A51 and A52, which is materialized by the arrows F51 and F52, by means of the activation of the cylinders 57 and 58.

En parallèle l'assise 3 est basculée vers l’arrière autour de son axe A3, selon la flèche F3, ce qui constitue ie troisième des quatre mouvements évoqués ci-dessus. À cet effet on développe la tige 25 hors du corps 24 du vérin 23, selon la flèche f25 sur la figure 15. Ce mouvement d’exfraction de la tige induit un déplacement correspondant de la bielle, qui repousse l’assise au niveau de l’axe A28 et provoque le basculement précité. On notera que, durant le basculement de l'assise, l'orientation de l'axe longitudinal X4 de la platine 4 reste sensiblement constante par rapport à l’embase. En effet, cette platine est montée sur l'extrémité supérieure des bras 18 et 19. Sur la figure 18, on note C la charnière entre la platine 4, dont l’orientation est constante, et l'assise basculante 3, In parallel, the seat 3 is tilted rearward around its axis A3, according to the arrow F3, which constitutes the third of the four movements mentioned above. For this purpose, the rod 25 is developed out of the body 24 of the cylinder 23, according to the arrow f25 in FIG. axis A28 and causes the aforementioned tilting. It will be noted that, during the tilting of the seat, the orientation of the longitudinal axis X4 of the plate 4 remains substantially constant with respect to the base. Indeed, this plate is mounted on the upper end of the arms 18 and 19. In Figure 18, we note C the hinge between the plate 4, whose orientation is constant, and the tilting seat 3,

Enfin, le quatrième de ces mouvements est un rapprochement du relève jambes 7 par rapport à l’assise 3. selon la flèche F7. Ce rapprochement, qui correspond à un pivotement de ce relève jambes autour de son axe A7, est assuré moyennant une activation du vérin 75. Finally, the fourth of these movements is a rapprochement of the leg rest 7 with respect to the seat 3. according to the arrow F7. This bringing together, which corresponds to a pivoting of this leg rest around its axis A7, is ensured by activating the cylinder 75.

Au terme de ces différents mouvements, comme cela est illustré sur les figures 4 et 5, le lit adopte une position intermédiaire dite de relaxation du patient. À titre d’exemple indicatif, avantageux mais non limitatif (voir figure 5) : At the end of these various movements, as illustrated in FIGS. 4 and 5, the bed adopts an intermediate position known as patient relaxation. By way of indicative, advantageous but non-limiting example (see Figure 5):

- l’angle a5 entre le dossier et l’assise est compris entre 80 et 100°, notamment voisin de 90° ; - the angle a5 between the backrest and the seat is between 80 and 100°, in particular close to 90°;

- l’angle a7 entre le relève jambes et l’assise est compris entre 80 et 100°, notamment voisin de 90° ; - the angle a7 between the leg rest and the seat is between 80 and 100°, in particular close to 90°;

- l’angle a5 entre l’assise et l’horizontale est compris entre 30 et 60°, notamment voisin de 45°. - the angle a5 between the seat and the horizontal is between 30 and 60°, in particular close to 45°.

Par ailleurs, en référence à la figure 12, chaque aile 51 et 52 forme, avec l’âme 50, un angle respectif a51 a52. De façon avantageuse, celui-ci est compris entre 30 et 60°, notamment voisin de 45°. Dans cette configuration le dossier 5 forme donc une coque de maintien, qui empêche en particulier le patient de tomber sur les côtés. Furthermore, with reference to Figure 12, each wing 51 and 52 form, with the core 50, a respective angle a51 a52. Advantageously, this is between 30 and 60°, in particular close to 45°. In this configuration, the backrest 5 therefore forms a holding shell, which in particular prevents the patient from falling to the sides.

Enfin on notera que, entre la position allongée et la position de relaxation, chaque accoudoir 45 s’est déplacé vers l’avant de l’assise, selon la flèche F45 de la figure 4, Par conséquent, la main du patient se trouve sensiblement à la même distance de cet accoudoir, de sorte qu’il peut accéder aisément au bouton de commande 90. Finally, it will be noted that, between the lying position and the relaxation position, each armrest 45 has moved forwards of the seat, according to the arrow F45 in FIG. 4. Consequently, the patient's hand is substantially at the same distance from this armrest, so that he can easily access the control button 90.

À partir de cette position de relaxation, le lit peut adopter une position dite assise. À cet effet, on fait désormais basculer l’assise 3 vers l’avant autour de son axe A3, selon la flèche F’3, À cet effet, comme Se montre la figure 16, la tige 25 du vérin 23 est escamotée à l’intérieur du corps 24. On notera que, durant ce basculement, à la fois le dossier et le relève jambes sont avantageusement maintenus immobiles par rapport à l’assise. La manœuvre, consistant à déplacer le lit depuis sa position de relaxation vers sa position assise, peut être réalisée en toute sécurité par le patient lui-même. L'assise 3 est alors sensiblement horizontale, alors que le dossier 5 et le relève jambes 7 sont sensiblement verticaux. Chaque accoudoir a en outre poursuivi sa translation, en direction de l'avant de l’assise. From this relaxation position, the bed can adopt a so-called sitting position. For this purpose, the seat 3 is now tilted forward around its axis A3, along the arrow F'3. For this purpose, as shown in Figure 16, the rod 25 of the jack 23 is retracted inside the body 24. It will be noted that, during this tilting, both the backrest and the legrest are advantageously kept immobile with respect to the seat. The process, consisting of moving the bed from its relaxation position to its sitting position, can be carried out in complete safety by the patient himself. The seat 3 is then substantially horizontal, while the backrest 5 and the leg rest 7 are substantially vertical. Each armrest has also continued its translation, towards the front of the seat.

À partir de la position assise de la figure 5, le lit conforme à l’invention peut adopter une position supplémentaire dite d’aide à la levée du patient. Comme cela est montré sur la figure 8, il s’agit de faire basculer l’assise seion la flèche F”3. Au terme de ce basculement, comme cela est montré sur la figure 9, l’assise est basculée vers l’avant par rapport à l’horizontale. Dans cette position, l’assise forme un angle a’3 par rapport à l’horizontale, qui est avantageusement compris entre 20 et 40°, notamment voisin de 30°. From the seated position of Figure 5, the bed according to the invention can adopt an additional position called assistance to the lifting of the patient. As shown in figure 8, the seat must be tilted according to the arrow F”3. At the end of this tilting, as shown in figure 9, the seat is tilted forwards relative to the horizontal. In this position, the seat forms an angle a'3 with respect to the horizontal, which is advantageously between 20 and 40°, in particular close to 30°.

Durant ce basculement, Se dossier 5 est maintenu sensiblement à la verticale. De la sorte, il forme désormais avec l’assise un angle a’5, qui est supérieur à celui a5 de la figure 5. De façon plus générale, dans cette position d’aide à la levée, le dossier 5 peut présenter un angle non nul par rapport à la verticale. Néanmoins cet angle reste faible de sorte que le dossier possède une configuration globale relevée, ce qui permet d’accompagner le patient vers une position debout, During this tilting, Se file 5 is maintained substantially vertically. In this way, it now forms with the seat an angle a'5, which is greater than that a5 of FIG. nonzero with respect to the vertical. Nevertheless, this angle remains low so that the backrest has an overall raised configuration, which makes it possible to accompany the patient towards a standing position,

En parallèle, lorsque le sommier adopte la position d’aide à la levée des figures 8 et 9, le repose pieds 8 est plaqué contre le sol S. La force ainsi exercée induit un pivotement de ce repose pieds, matérialisé par la flèche F8, qui a tendance à le rapprocher du relève jambes 7. De façon plus précise l’angie a’8 entre le relève jambes 7 et le repose pieds 8, dans cette position rapprochée de la figure 9, est typiquement compris entre 60° et 80°, en étant par exemple voisin de 75°. In parallel, when the bed base adopts the lifting aid position of Figures 8 and 9, the footrest 8 is pressed against the ground S. The force thus exerted induces a pivoting of this footrest, materialized by the arrow F8, which tends to bring it closer to the legrest 7. More precisely the angle a'8 between the legrest 7 and the footrest 8, in this close position of Figure 9, is typically between 60° and 80° , being for example close to 75°.

Cela est à comparer la valeur a8 de ce même angle, en l’absence d’action exercée sur Se repose pieds, qui est typiquement de 90° comme le montre notamment la figure 7. Selon une caractéristique avantageuse de l’invention, non représentée, le repose pieds peut se replier entièrement au contact du relève jambes, de sorte que l’angle a8 est sensiblement nul. Cela permet d’obtenir une configuration compacte, qui se prête aisément au stockage ou au transport. This is to compare the value a8 of this same angle, in the absence of action exerted on the footrest, which is typically 90° as shown in particular in FIG. 7. According to an advantageous characteristic of the invention, not shown , the footrest can fold up entirely in contact with the legrest, so that the angle a8 is substantially zero. This results in a compact configuration, which lends itself easily to storage or transport.

La présence d’un repose pieds mobile par rapport au relève jambes, de façon à pouvoir être plaqué contre le sol, constitue une caractéristique tout particulièrement avantageuse de l’invention. En effet, cela évite la présence d’une marche de hauteur significative entre le repose pieds et le soi. De la sorte, le patient peut se lever en toute sécurité sans risque de chute. The presence of a footrest that is movable relative to the legrest, so as to be able to be pressed against the ground, constitutes a very particularly advantageous characteristic of the invention. Indeed, this avoids the presence of a step of significant height between the footrest and the self. In this way, the patient can get up safely without risk of falling.

On notera que, dans la position repliée du repose pieds à la figure 9, la jonction J78 entre le repose pieds et le relève jambes est située en arrière de la jonction J37 entre l’assise et le relève jambes. Par conséquent le talon du patient se situe en arrière du genou, ce qui participe encore davantage à la commodité de la levée. On soulignera enfin que les lits décrits dans les documents US 2014 265497, US 2014 157 515 et US 2003 093 863, mentionnés ci-dessus, sont dépourvus entre autres d’un repose pieds selon l'invention. Dans ces conditions, iis ne confèrent pas une aide à la levée aussi commode et aussi sécuritaire que dans la présente invention. Note that, in the folded position of the footrest in figure 9, the J78 junction between the footrest and the leg rest is located behind the J37 junction between the seat and the leg rest. Consequently, the patient's heel is located behind the knee, which contributes even more to the convenience of lifting. Finally, it should be noted that the beds described in the documents US 2014 265497, US 2014 157 515 and US 2003 093 863, mentioned above, do not, among other things, have a footrest according to the invention. Under these conditions, they do not provide lifting assistance that is as convenient and as safe as in the present invention.

Le passage de la position à l’assise à celle d'aide à la levée être commandé, de deux façons différentes. Si le patient est autorisé à se lever par lui-même, le bouton 90 est configuré pour actionner les moyens de basculement de l’assise. En revanche, s’il n’y est pas autorisé, ce bouton 90 ne possède pas cette fonctionnalité. Dans ce cas, seul un membre du personnel soignant pourra procéder à ce basculement, par manœuvre de la télécommande 91. The passage from the sitting position to that of the lifting aid can be controlled in two different ways. If the patient is authorized to stand up by himself, the button 90 is configured to actuate the means for tilting the seat. On the other hand, if it is not authorized to do so, this button 90 does not have this functionality. In this case, only a member of the nursing staff can carry out this changeover, by operating the remote control 91.

À partir de la position d’aide à la levée de la figure 9, il est possible de faire revenir le lit dans sa configuration allongée initiale de la figure 3. Â cet effet, on fait tout d’abord basculer l’assise selon la flèche pointillée f3 de la figure 7. Le repose pieds 8 revient alors dans sa configuration perpendiculaire au relève jambes 7, grâce aux moyens de rappel élastique. Puis on fait basculer l’ensemble du sommier, selon la flèche pointillée f’3 à la figure 5, de manière à revenir à la position de relaxation. Enfin on déplie le dossier 5 et le relève jambes 7 par rapport à l’assise, selon les flèches pointillées f5 et 17 de la figure 3, tout en basculant l’assise selon la flèche pointillée f’3 de cette même figure 3. From the lifting aid position of figure 9, it is possible to return the bed to its initial lying configuration of figure 3. To this end, the seat is first tilted according to the dotted arrow f3 in Figure 7. The footrest 8 then returns to its configuration perpendicular to the legrest 7, thanks to the elastic return means. Then the entire bed base is tilted, according to the dotted arrow f'3 in figure 5, so as to return to the relaxation position. Finally, the backrest 5 and the leg rest 7 are unfolded in relation to the seat, according to the dotted arrows f5 and 17 in figure 3, while tilting the seat according to the dotted arrow f'3 in this same figure 3.

La comparaison entre les figures 1 , 2 et 10 montre des fonctionnalités supplémentaires de l’invention. Il est tout d’abord possible d’abaisser ou de relever l’assise et, par conséquent l’ensemble du sommier, par rapport à l’embase. À cet effet, on manœuvre la tige 22 du vérin 20 vers le haut ou bien vers le bas. Dans ce cas, le vérin 23 peut être également manœuvré de sorte que cette tige 25 exerce la même action que la tige 22. À titre d’alternative, cette tige 25 peut être de type mené à savoir qu’eile suit librement le mouvement de la tige 22. Enfin, la figure 10 illustre la possibilité de mise en pro clive en déciive de l'ensemble du lit. Dans ce cas, à partir d’une position allongée dans laquelle les pièces 3,5 et 7 sont dans le prolongement les unes des autres, on bascule l’assise par rapport à l’embase vers l’avant ou bien vers l'arrière. The comparison between Figures 1, 2 and 10 shows additional features of the invention. It is first of all possible to lower or raise the seat and, consequently the whole of the bed base, with respect to the base. To this end, the rod 22 of the cylinder 20 is maneuvered upwards or downwards. In this case, the jack 23 can also be operated so that this rod 25 exerts the same action as the rod 22. Alternatively, this rod 25 can be of the driven type, i.e. it freely follows the movement of the rod 22. Finally, Figure 10 illustrates the possibility of setting pro cleave in deciive of the entire bed. In this case, from a lying position in which the parts 3.5 and 7 are in the extension of each other, the seat is tilted relative to the base forwards or backwards.

La présente invention garantit de nombreux avantages, vis-à-vis de l’art antérieur cité ci- dessus. The present invention guarantees numerous advantages, compared to the prior art cited above.

Tout d’abord, le lit conforme à l’invention présente une structure mécanique globale, dont la complexité est moindre par rapport à la plupart des solutions connues. En particulier, l’invention permet de s’affranchir d’un châssis intermédiaire tei que celui décrit dans FR 3 006 175. À cet égard il est tout particulièrement avantageux de prévoir des moyens de basculement de i’assise, qui sont en partie portés par une platine intermédiaire de faible dimension, distincte de l’embase. First of all, the bed according to the invention has an overall mechanical structure, the complexity of which is less compared to most of the known solutions. In particular, the invention makes it possible to dispense with an intermediate frame such as that described in FR 3 006 175. In this respect it is very particularly advantageous to provide means for tilting the seat, which are partly carried by a small intermediate plate, separate from the base.

Par ailleurs, l’invention confère une grande sécurité aux différents mouvements, auxquels est soumis le patient entre les positions extrêmes du lit. Dans cet esprit la présence d’une coque de maintien, formée par le dossier, est intéressante car elle évite tout risque de chute latérale. Furthermore, the invention confers great safety on the various movements to which the patient is subjected between the extreme positions of the bed. In this spirit, the presence of a support shell, formed by the backrest, is interesting because it avoids any risk of a side fall.

Cet aspect sécuritaire est renforcé, de manière avantageuse, par la présence de 2 organes de commande distincts. En effet, le patient conserve une certaine autonomie puisqu’il peut, par lui-même, procéder aux manœuvres les moins risqués. En revanche, les déplacements susceptibles d’entraîner une chute du patient sont subordonnés à l’aval du personnel soignant. This security aspect is reinforced, advantageously, by the presence of 2 separate control devices. Indeed, the patient retains a certain autonomy since he can, by himself, carry out the least risky maneuvers. On the other hand, movements likely to cause the patient to fall are subject to the approval of the nursing staff.

La figure 6 illustre une option avantageuse de l’invention, Comme le montre cette figure, le lit I est équipé d’une tablette 100, susceptible d’inclure des fonctionnalités de type connu en soi. On citera notamment la mise à disposition d’une surface plane, pour placer un plateau ou analogue, mais également différents rangements en particulier pour des médicaments. Cette tablette 100 est montée pivotante autour d’un axe vertical 102, lui- même supporté par une pièce de jonction 104 de forme coudée. À son extrémité opposée à l’axe 102, la pièce de jonction est montée solidairement des bras 18 et 19, Par conséquent, quelle que soit l’orientation angulaire des différentes parties constitutives du lit, la surface supérieure de la tablette sera maintenue horizontale. Figure 6 illustrates an advantageous option of the invention. As shown in this figure, the bed I is equipped with a shelf 100, capable of including functionalities of a type known per se. These include the provision of a flat surface, to place a tray or the like, but also various storage in particular for drugs. This shelf 100 is pivotally mounted around a vertical axis 102, itself supported by a junction piece 104 of bent shape. At its end opposite the axis 102, the junction piece is mounted integrally with the arms 18 and 19. Consequently, whatever the angular orientation of the various constituent parts of the bed, the upper surface of the shelf will be kept horizontal.

Claims

REVENDICATIONS 1 , Ut (i), en particulier de type médicalisé, comprenant une embase (1) destinée à reposer sur le sol, ainsi qu’un sommier articulé (3, 5, 7), monté sur ladite embase, ce sommier comprenant une partie centrale formant assise (3), une partie supérieure formant dossier (5), ainsi qu’une partie inférieure formant relève jambes (7), des premiers moyens de pivotement (53) qui sont aptes à faire pivoter le dossier par rapport à l’assise des seconds moyens de pivotement (75) qui sont aptes à faire pivoter le relève jambes par rapport à l’assise des moyens (18,19, 20) d'élévation/abaissement de l’assise par rapport à l’embase ce lit étant caractérisé en ce qu’il comprend en outre des moyens de basculement (23, 26), qui sont aptes à faire basculer l’assise par rapport à l’embase autour d’un axe transversal (A3), de sorte que le lit est apte à adopter une position dite d’aide à la levée du patient, position dans laquelle l’assise est basculée vers l’avant par rapport à un axe horizontal, le dossier étant dans une position relevée, 1, Ut (i), in particular of the medical type, comprising a base (1) intended to rest on the ground, as well as an articulated base (3, 5, 7), mounted on said base, this base comprising a part forming a seat (3), an upper part forming a backrest (5), as well as a lower part forming a leg rest (7), first pivoting means (53) which are capable of causing the backrest to pivot relative to the seat second pivoting means (75) which are capable of causing the legrest to pivot relative to the seat means (18, 19, 20) for raising/lowering the seat relative to the base of this bed being characterized in that it further comprises tilting means (23, 26), which are capable of tilting the seat with respect to the base around a transverse axis (A3), so that the bed is capable of adopting a so-called patient lifting aid position, a position in which the seat is tilted forward with respect to a horizontal axis, the back sier being in a raised position, 2, Lit selon la revendication précédente dans lequel, en vue de côté, l’axe transversal de basculement (A3) est situé entre les extrémités longitudinales opposées de l’assise, dans une position sensiblement horizontale de cette dernière. 2, Bed according to the preceding claim wherein, in side view, the transverse tilting axis (A3) is located between the opposite longitudinal ends of the seat, in a substantially horizontal position of the latter. 3, Lit selon l’une des revendications précédentes, comprenant en outre une platine (4) supportée par au moins une partie (18, 19) des moyens d’ééévation/abaissement, l'orientation de l’axe longitudinal (X4) de cette platine, par rapport à l’embase, étant sensiblement constante en service. 3, Bed according to one of the preceding claims, further comprising a plate (4) supported by at least a portion (18, 19) of the raising/lowering means, the orientation of the longitudinal axis (X4) of this plate, with respect to the base, being substantially constant in service. 4, Lit selon la revendication précédente, dans lequel les moyens de basculement comprennent un vérin de basculement (23), dont le corps est monté sur la platine (4) et dont la tige (25) est articulée sur l’assise, avec interposition éventuelle d’une bielle (26). 4, Bed according to the preceding claim, in which the tilting means comprise a tilting cylinder (23), the body of which is mounted on the plate (4) and the rod (25) of which is articulated on the seat, with interposition possible a connecting rod (26). 5, Lit selon l’une des revendications précédentes, dans lequel le dossier (5) comprend une région centrale formant une âme (50), ainsi que des régions latérales formant des ailes (51 ,52), et en ce qu’il est prévu des moyens de déplacement (57,58), aptes à déplacer chaque aile par rapport à la région centrale de façon à former une coque de maintien latéral pour le patient. 5, Bed according to one of the preceding claims, in which the backrest (5) comprises a central region forming a core (50), as well as lateral regions forming wings (51, 52), and in that it is provision is made for movement means (57,58), capable of moving each wing relative to the central region so as to form a lateral support shell for the patient. 6. Lit selon l’une des revendications précédentes, comprenant en outre des moyens de commande (90, 91 , 92), qui sont aptes à commander tout ou partie des moyens de basculement, des moyens d’élévation/abaissement et des moyens de déplacement, 6. Bed according to one of the preceding claims, further comprising control means (90, 91, 92), which are adapted to control all or part of the tilting means, raising / lowering means and means of shift, 7. Lit selon les revendications 5 et 6, dans lequel les moyens de commande sont configurés pour synchroniser les moyens de basculement de l’assise, avec les moyens de déplacement des ailes du dossier. 7. Bed according to claims 5 and 6, wherein the control means are configured to synchronize the means for tilting the seat, with the means for moving the wings of the backrest. 8. Lit selon l’une des revendications 8 à 7, dans lequel les moyens de commande comprennent 8. Bed according to one of claims 8 to 7, in which the control means comprise - un premier organe de commande (90) susceptible d’être manœuvré par le patient, apte à remplir une première gamme de fonctions, ce premier organe de commande étant avantageusement monté mobile en translation longitudinale par rapport à l’assise, sous l’effet du pivotement du dossier par rapport à l’assise ; et - a first control member (90) capable of being operated by the patient, able to fulfill a first range of functions, this first control member being advantageously mounted to move in longitudinal translation relative to the seat, under the effect the pivoting of the backrest relative to the seat; and 9. Lit selon la revendication précédente, dans lequel les moyens de commande comprennent en outre 9. Bed according to the preceding claim, in which the control means further comprise - un second organe de commande (91), susceptible d’être manœuvré par le personnel soignant, ce second organe de commande étant apte à remplir une seconde gamme de fonctions, distincte de ladite première gamme. - a second control member (91), capable of being operated by the nursing staff, this second control member being able to fulfill a second range of functions, distinct from said first range. 10. Lit selon l’une des revendications précédentes, dans lequel le relève jambes (7) est terminé, à l’opposé de l’assise, par un repose pieds (8) possédant une position dite de repos par rapport au relève jambes en l’absence de contraintes extérieures, ce repose pieds (8) étant apte à pivoter par rapport au relève jambes uniquement dans le sens de la flexion sous l’effet d’une contrainte mécanique extérieure. 10. Bed according to one of the preceding claims, in which the leg rest (7) ends, opposite the seat, with a footrest (8) having a so-called rest position with respect to the leg rest in the absence of external constraints, this footrest (8) being capable of pivoting with respect to the legrest only in the direction of flexion under the effect of an external mechanical constraint. 11. Lit selon la revendication précédente, dans lequel il est prévu des moyens de rappel permettant de rappeler ce repose pieds dans la position de repos. 11. Bed according to the preceding claim, wherein return means are provided for recalling this footrest to the rest position. 12. Lit selon l’une des revendications précédentes dans lequel, dans la position d’aide à la levée : 12. Bed according to one of the preceding claims wherein, in the lifting aid position: -l l’assise est basculée vers l’avant par rapport à l’axe horizontal seion un angle (a’3) compris entre 20° et 40°, notamment voisin de 30°, le dossier étant maintenu sensiblement à la verticale, - l’angle (a7) entre le relève jambes et l’assise est compris entre 80° et 100°, notamment voisin de 90°, - the seat is tilted forwards relative to the horizontal axis according to an angle (a'3) of between 20° and 40°, in particular close to 30°, the backrest being held substantially vertically, - the angle (a7) between the leg rest and the seat is between 80° and 100°, in particular close to 90°, 13. Procédé de mise en œuvre du lit selon l’une revendications précédente, procédé dans lequel, à partir d’une position allongée dans laquelle l’assise, le dossier et le relève jambes sont sensiblement dans le prolongement les uns des autres : 13. Method of implementing the bed according to one preceding claim, method in which, from a lying position in which the seat, the backrest and the leg rest are substantially in the extension of each other: - on déplace l’assise, le dossier et le relève jambes jusqu’à une position dite de relaxation, moyennant un pivotement du dossier par rapport à l’assise, un pivotement du relève jambe par rapport à l’assise, et un basculement vers l’arrière de l’assise autour de son axe de basculement - the seat, the backrest and the leg rest are moved to a so-called relaxation position, by means of a pivoting of the backrest relative to the seat, a pivoting of the leg rest relative to the seat, and a tilting towards the back of the seat around its tilting axis - on déplace l’assise, le dossier et le relève jambes jusqu’à une position dite assise, moyennant basculement vers l’avant de l’assise autour de son axe de basculement, tout en maintenant le dossier ainsi que le relève jambes sensiblement immobiles par rapport à cete assise. - the seat, the backrest and the legrest are moved to a so-called sitting position, by tilting the seat forward around its tilting axis, while keeping the backrest and the legrest substantially immobile relative to this seat. 14. Procédé selon la revendication précédente, dans lequel on fait à nouveau basculer l’assise autour de son axe de basculement vers l’avant, de manière à atteindre une position dite d’aide à la levée. 14. Method according to the preceding claim, in which the seat is again tilted around its tilting axis forwards, so as to reach a so-called lifting aid position. 15. Procédé selon la revendication 13 ou 14, pour la mise en œuvre du lit selon la revendication 10 ou 11, dans lequel on plaque le repose pieds contre le sol, dans la position d’aide à ia levée, moyennant flexion de ce repose pieds par rapport au relève jambes. 15. Method according to claim 13 or 14, for the implementation of the bed according to claim 10 or 11, in which the footrest is pressed against the ground, in the lifting aid position, by means of bending of this rest feet in relation to the leg rest.
PCT/IB2022/053509 2021-04-14 2022-04-14 Bed provided with an articulated bed base comprising means for helping the patient to get up, and method for use thereof Ceased WO2022219574A1 (en)

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FR2103828A FR3121839B1 (en) 2021-04-14 2021-04-14 Bed equipped with an articulated bed base, including means of assisting the patient in getting up, and its method of implementation
FRFR2103828 2021-04-14

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654334A1 (en) * 1989-11-10 1991-05-17 Ecole Nat Sup Creation Ind DEVICE FOR A MULTIFUNCTIONAL MEDICAL BED.
US20030093863A1 (en) 2001-11-17 2003-05-22 Medi-Plinth Healthcare Group Ltd. Bed
EP2308442A1 (en) 2009-10-12 2011-04-13 Joh. Stiegelmeyer GmbH & Co. KG Hospital and care bed with anti-tip element
US20140157515A1 (en) 2012-09-27 2014-06-12 Multifit Hospital Supplies Limited Bed chairs
US20140265497A1 (en) 2013-03-15 2014-09-18 Stryker Corporation Medical support apparatus
FR3006175A1 (en) 2013-05-28 2014-12-05 Edena Sas BED WITH ARTICULATED SOMMIER FOR PATIENT EXIT IN BED FOOT

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654334A1 (en) * 1989-11-10 1991-05-17 Ecole Nat Sup Creation Ind DEVICE FOR A MULTIFUNCTIONAL MEDICAL BED.
US20030093863A1 (en) 2001-11-17 2003-05-22 Medi-Plinth Healthcare Group Ltd. Bed
EP2308442A1 (en) 2009-10-12 2011-04-13 Joh. Stiegelmeyer GmbH & Co. KG Hospital and care bed with anti-tip element
US20140157515A1 (en) 2012-09-27 2014-06-12 Multifit Hospital Supplies Limited Bed chairs
US20140265497A1 (en) 2013-03-15 2014-09-18 Stryker Corporation Medical support apparatus
FR3006175A1 (en) 2013-05-28 2014-12-05 Edena Sas BED WITH ARTICULATED SOMMIER FOR PATIENT EXIT IN BED FOOT

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FR3121839B1 (en) 2023-09-29
FR3121839A1 (en) 2022-10-21

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