FR3038224A1 - MECHANIZED BED COMPRISING A LAYER PAINENT LAYER - Google Patents

Abstract

The patient is lying on a support (6), which carries three support elements (3,4,5) hinged together, the back element (3) being connected by a bust jack (24) to the support (6) by a set of links (23,26,27,29) to bring the support elements into the chair position.

Description

The present invention relates to a bed for patients, generally more or less hypotonic, these patients to be placed in position by the care staff in the appropriate positions for different care. Since some patients have a significant weight while the care staff must make the necessary efforts to handle patients often several times a day, it has been proposed beds equipped with cylinders that can put the elements that support the patient in various positions according to the care to bring. By way of example, it has already been proposed to vary the sleeping height of a medical bed in a low safety position for sleep and a high position for the acts of care or grooming according to the size of the nursing staff .

It has also been proposed commands allowing the patient to be able to adjust various positions of comfort for better recovery, sitting or semi-sitting with legs raised or not or bust raised for better breathing.

It has also been proposed, to allow an aid to the raising of the patient, when it has slipped to the foot of the bed, to tilt the sleeping surface and, in this regard, it has been proposed to equip the bed with an engine for putting in proclive (legs down) and a motor for setting down (legs up), which may be necessary in case of intubation.

It has also been proposed to place the sleeping surface upright, the patient's feet being pressed against the bed panel and the patient's safety being able to be effected by strapping. It has also been proposed to provide a lateral tilting of the sleeping surface, such lateralization being particularly useful for providing certain care to the patient. Unfortunately, the diversity of desirable functions for the maneuvering of the sleeping bed of a hospital bed is such that all these functions are generally not assembled in the same bed for purely economic reasons; in addition, the cost of such a set quickly becomes prohibitive given the equipment currently used to perform the various functions. In addition, the size of the elements necessary to ensure all the functions makes such a bed too large for a material of current use. In addition, it has been very desirable to allow the further transfer of the patient from his bed to a chair or a stretcher while avoiding unacceptable fatigue for the caregiver.

The present invention aims to describe a medical bed grouping all the functions mentioned above, the various maneuvering of the bed being performed by limited electric actuators and simple mechanisms, so that the price of such a bed remains moderate. It is clear that some of the functions made accessible by the mechanisms of the bed can not be implemented simultaneously and the selection of the mechanisms to be implemented for a given function, is ensured by acting on the power supplies of the cylinders, an appropriate program being interposed between said power supplies and the control buttons on which the user can act.

The subject of the present invention is therefore a bed intended to be used for a patient likely to receive care by a nursing staff, said bed comprising a base equipped with rolling means on the ground and several elements intended to constitute for the patient supports that can be equipped with bedding for the bust, the seat and the legs of the patient, these elements being arranged on a support maneuvered by means of jacks, to vary the height and the orientation of the support relative to the ground, characterized in that the support carries three substantially planar elements, intended respectively to constitute a backrest for supporting the bust of the patient and two supports for the seat and legs of said patient, these three elements being interconnected by joints consisting of links, the relative positions of these three elements can be modified by a bust jack, the length between its extremities és is modifiable, a first of its ends being linked to the folder and the second being linked to a point of the support, the second end of the bust cylinder being also linked to a link pivotally supported by the support, this link acting on the backrest so that one of the points of said backrest is constrained to slide in a slide connected to the support, said rod being, furthermore, rotatably articulated with an arm, which acts by a linkage on an oblong recess pivotally pivotable relative to the support for providing the seat support with a bearing movement relative to the support.

In one embodiment, the arm, at its end opposite to that which is close to the backrest, controls an articulated parallelogram whose two adjacent vertices are pivots carried by the support, the two other vertices being axes linked to the same hook, who maneuver the leg support to vary the angle it makes with the seat support.

In one embodiment, the support constitutes a rectangular primary frame defined by two longitudinal members substantially parallel to the longitudinal axis of the bed and by two transverse edges, each carrying one end of a longitudinal beam, the axis of said beam being , by two end pivots, secured to the transverse edges of the support, the beam forming part of a rectangular subframe disposed between the edges and longitudinal members of the primary frame, the secondary chassis thus being pivotable relative to the primary frame around the beam axis, the primary frame being supported on the secondary frame, itself supported on a level member to vary the height of the support relative to the ground on which the base, the subframe and the frame primary element which can, in addition, pivot about an axis perpendicular to the longitudinal axis of the bed and defined by two half-pivots carried by the secondary chassis, the secondary chassis can thus form with the primary chassis, a flat subassembly which, thanks to at least one verticalization jack, can come in a position forming an angle greater than 75 ° relative to the rolling ground of the base.

In an embodiment corresponding to that defined in the previous paragraph, the verticalization jack exerts its thrust between the longitudinal beam, on the one hand, and a point related to the primary frame, on the other hand. In such an embodiment, the connection between the verticalization jack and the primary frame can be performed by interposing a set of links between the two connected elements so as to allow, when the primary frame and the support come in a position close to the vertical , their weak upward movement in the plane of the flat subset they constitute.

In one embodiment, the support is, relative to the ground, at an adjustable level by virtue of two frames which can pivot relative to the base, each around an axis perpendicular to the longitudinal axis of the bed, the orientation of said frames relative to the base being obtained by at least one jack, whose body is secured to one of the frames and whose rod is secured to the other frame.

In an embodiment corresponding to the preceding paragraph, the orientation of the two frames is obtained by two jacks arranged head to tail parallel to the longitudinal axis of the bed, at least one of the frames having a hinge, which allows, according to the control of the cylinders, to give the longitudinal axis of the primary frame an inclination relative to the ground.

In an embodiment comprising a longitudinal beam, the pivoting of said longitudinal beam about its axis, defined by its end pivots is caused by at least one jack placed in place of one of said end pivots, between an element of the secondary frame and a tab linked to the primary frame to rotate the beam relative to the ground about its axis, which causes the support and allows a pivoting of the patient around the longitudinal axis of the bed. In such an embodiment, the pivoting of the beam can be obtained by means of a single lateral actuator, whose stroke modification causes pivoting in one direction or in the other direction.

In an embodiment as defined in the previous paragraph, the lateralizing jack is carried by the secondary frame at the end of the beam. In one embodiment, the bed may also include a bracket carried by the base of the bed, said bracket carrying a flexible link slidable relative to the bracket, one end of said link can be secured to the support while the other is likely to be attached to a harness placed between the patient and his bedding without excessive effort being required of the staff taking care of the patient, since the support was previously placed in the up position, said staff then being able to to ensure the lifting of the patient supported by his harness by simply lowering the support to the ground with at least one jack associated with the support, and then moving the patient so that he is no longer at the right of his bedding by relative displacement of the gallows with respect to said support. In such an embodiment, the connection bracket / base can be a rotary link; the stem can be connected to the base by a removable connection.

To better understand the object of the invention will now be described, by way of purely illustrative and non-limiting example embodiment shown in the accompanying drawing.

In this drawing: FIG 1 shows, in plan, a bed according to the invention, which was removed the bedding, which overcomes the support elements of the patient that the bed must subsequently receive, this bed is not equipped the stem to which it could be associated and having been laid flat but the end panels being raised; FIG. 2 represents a bottom view of the bed of FIG. 1; FIG. 3 represents a perspective of the bed of FIG. 1, seen above the plane of the support elements of the patient, the end panels being raised; FIG. 4 represents a perspective view of the bed of FIG. 3, seen below the plane of the support elements of the patient; FIG. 5 represents in elevation an end view of the bed of FIG. 1, along V-V of FIG. 1, the head end panel having been removed; FIG. 6 represents in elevation an end view of the bed of FIG. 1 along VI-VI of FIG. 1, the foot end panel having been removed; FIG. 7 represents a side view of the bed of FIG. 1, whose support elements of the patient are placed flat, in the low position, ie in the vicinity of the ground, the bed being, in this figure equipped with a bracket designed to support the patient if necessary, said stem not being equipped with the flexible link, which is associated with it; FIG. 8 represents the bed of FIG. 7 equipped with its associated bracket, the support plane of the patient being in the up position, that is to say in the position as far as possible from the floor which supports the bed, a harness being in place for moving the patient out of bed; FIG. 9 represents the bed of FIGS. 7 and 8, from which the associated stem has been removed, the supporting plane intended for the patient being in an intermediate position between those represented in FIGS. 7 and 8 and the patient not being represented. ; FIG. 10 represents a plan view of the bed of FIG. 1, when the bracket has been put in place; FIG. 11 represents a partial view of the constituent elements of the bed according to the invention, in the position corresponding to the "placing in the chair" of the patient, the base of the bed and its associated gallows having been omitted to allow to see the mechanisms implemented for the relative displacement of the patient's support elements; FIG. 12 is a perspective view of the underside of the bed of FIG. 2, in which only the adjacent members of the support plane of the patient have been left, all the other members included between this support plane and the base of the bed; omitted to allow visualization of the primary chassis; FIG 13 is a section along XIII-XIII of Figure 2, the drawing showing only the mechanisms connecting the supporting elements of the patient lying excluding the gallows, the frame of the bed and the base; FIG. 14 represents the elements of FIG. 13 in the position they occupy at the beginning of the "chairing" movement; FIG. 15 represents a magnifying lens L of a portion of FIG. 14; FIG. 16 represents the elements of FIGS. 13 and 14 in the position they occupy at the end of the "chairing" movement; FIG 17 is a partial side elevation view of the detail of the verticalization mechanisms at the beginning of their movement from the position shown in Figure 9; FIG. 18 represents the elements of FIG. 17 during a subsequent rise of the verticalization movement; FIG. 19 represents the elements of FIG. 18 at the end of the verticalization movement of the support elements of the patient.

Referring to the drawing, it can be seen that the bed according to the invention is a hospital bed intended to be used for a patient 12 likely to receive care by a nursing staff. This bed comprises a base 1 of quadrangular shape consisting of two longitudinal members 41 parallel to the longitudinal axis of the bed and two cross members 42 perpendicular to the longitudinal members. The bed comprises transversely a head panel 31 and a foot panel 32, which delimit its length. The two longitudinal members 41 comprise slides 43 in the head zone of the bed. This rectangular structure is equipped with four wheels 2, which ensure the ability to easily move the base 1 relative to the ground that supports the bed. The base supports all the elements of the bed which are located above it by means of two frames 13,14, which can each rotate relative to the base about an axis perpendicular to the longitudinal axis bed ; said frames are substantially planar and the orientation of the frames, relative to the base, is obtained by two cylinders 8,9 arranged head to tail; the body of one of the cylinders is secured to one of the frames and its rod is secured to the other frame. The action on the two cylinders 8, 9 makes it possible to adjust the level, relative to the ground, of a support 6, which receives three elements 3,4,5 intended to constitute the support elements of the patient 12, that the we set up in the bed. The support elements 3,4,5 are equipped with bedding not shown in the drawing; they constitute a support layer for the bust (element 3), the seat (element 4) and the legs (element 5) of the patient. The free ends of the frame 13 are axes which slide in the slideways 43 of the base 1; the free ends of the frame 14 carry a hinge 16 fixed relative to the base 1. The action of the cylinders 8 and 9 not only allows to change the distance from the ground of the support 6, but also to give the axis longitudinal support 6 inclined relative to the ground.

The bed according to the invention allows, in addition, to provide a complementary function to reduce the hardness of the work of the nursing staff using the force developed by the cylinders 8 and 9. The bed according to the invention comprises a bracket 10 associated with the base 1 of the bed, said bracket carrying a flexible link 11, which can slide relative to the bracket. One of the ends of the link 11 is secured to the support 6 by a tab 49 of said support on which are the support elements of the patient 12 which uses the bed. The other end of the link 11 is likely to be attached to a harness 12a that is placed between the patient 12 and its support elements 3,4,5 without excessive effort being required of the caregiver taking care of the patient, since the support 6 has been previously placed in the high position (see Figure 8). The staff assures the lifting of the patient 12 carried by its harness 12a by simply lowering the support 6 to the ground by means of the cylinders 8,9 associated with the support 6. The caregiver can then move the patient to be more to the right of its bedding by relative movement of the bracket 10 relative to the support 6. The link bracket 10 / base 1 is a rotary connection made in a bearing, which is clamped in a lug 33 secured to the support 6. The clamping is obtained by any appropriate means, including removable collars.

The support 6 constitutes a rectangular primary frame designated as a whole; this frame 15 is defined by two longitudinal members 6a, 6b substantially parallel to the longitudinal axis of the bed and by two transverse edges 6c, 6d which each carry the end of a longitudinal beam 17. The beam 17 comprises, at each of its ends, a pivot 17a, 17b, the axis of said beam being defined by its two pivots; the pivots 17a, 17b are integral each of the transverse edges 6c, 6d via a bearing.

The beam 17 is part of a rectangular subframe 18 disposed between the borders and longitudinal members of the primary frame 15; the secondary chassis 18 can thus pivot relative to the primary frame 15 around the axis of the beam 17.

The secondary chassis 18 carries two half-pivots 19, which define an axis of rotation perpendicular to the longitudinal axis of the bed. The primary frame 15 can pivot about the axis defined by the two half-pivots 19; the secondary chassis 18 can thus form with the primary frame 15 a flat subset orientable with respect to the ground.

In order to be able to bring the patient to a substantially vertical position, a verticalization jack 20 is used, one end of which is connected to the longitudinal beam 17 and the other end of which is connected to the primary frame 15. When the jack verticalization is fed, it exerts its thrust between the longitudinal beam 17 and a point linked to the primary frame 15. In this way, the flat subassembly 15/18 is in a position forming an angle of 85 ° relative to the rolling ground of the base.

The connection between the verticalizing jack 20 and the primary frame 15 is effected, as is clearly visible in FIGS. 17 to 19, by interposing a set of links 21, 22 between the two connected elements so that when the flat-set comes in a position close to the vertical, there is a slight upward displacement of said flat subset. The bed according to the invention therefore ensures the function of verticalization of a patient.

The bed of the invention also provides the necessary connections for the "chair" of a patient initially lying flat. As already indicated, the support 6 comprises three substantially planar elements intended to constitute respectively a backrest 3 for the support of the bust and two supports 4 and 5 respectively for the seat and the legs of the patient 12. The three elements 3,4 and 5 are interconnected by joints consisting of rods 23, the detail of which is shown in Figures 13 to 16. The relative positions of the three elements can be modified by a bust jack 24, the first end is linked to the folder 3 and the second at a point of the primary frame 15. The second end of the cylinder 24 is also connected to a link 23 pivotally supported by the backrest 3; the rod 23 acts on the backrest 3 so that one of its points is constrained to slide in a slideway 25 connected to the support 6. The rod 23 is further articulated to rotate with an arm 26, which acts on a connecting rod. oblong recess 27 pivoting at a point 28 relative to the primary frame 15, to give the seat 4 a raising movement relative to the primary frame 15. The arm 26, at its end 29 opposite that which is adjacent to the backrest 3, command an articulated parallelogram whose two adjacent vertices are pivots carried by the support 6, the two other vertices being axes linked to the same hook 29, which maneuvers the support of the legs 5 to vary the angle it makes with the seat support 4.

It can therefore be seen that the bed structure, which has just been described, makes it possible, with a jack, to bring a patient who is in a supine position into a more comfortable sitting position generally for him, without there having been need to involve the nursing staff.

Moreover, if it is desired for the patient to move from the seated position to a walking position, the operation presents no particular difficulty since the patient's feet do not encounter any obstacle in getting out of bed: indeed, all the mechanical control members are grouped between the head panel 31 and the articulation between the elements 4 and 5 of the supports of the patient; the foot panel 32 then constitutes a plane inclined towards the ground. If it is also desired that the patient remains resting on his legs in an upright position, it suffices, from the supine position, to actuate the verticalization ram, the patient remaining in contact with the support elements 3, 4,5 and can be maintained by a belt (not shown). The bed of the invention also allows to implement therapeutic positions, this to allow, for example, an aid to the raising of the patient when it has slipped to the foot of the bed. The tilting of the coating plane is then obtained by the control of one of the two cylinders which make it possible to adjust the height of the bed relative to the ground; we act on the cylinder side legs for the setting down and on the other cylinder for putting in proclive.

Finally, when it is desired to move a patient lying in the bed according to the invention, the work of the nursing staff is greatly facilitated because, as already indicated, it is sufficient to place, between the bedding and the back of the patient, a harness 12a , to hang the harness at the end close to the flexible link of the gallows while the sleeping plane is in its high position and, then, to bring the sleeping plane down, which automatically raises the harness and the patient.

Finally, the sleeping bed of the invention is not necessarily horizontal and can be rotated about the longitudinal axis of the bed, to form an angle (up to about 20 °) with the ground: it suffices for this purpose to act on the actuator 23, which makes it possible to bring the patient to a therapeutic position facilitating the work of the nursing staff.

Claims (10)

1. Bed intended to be used for a patient (12) capable of receiving care by a nursing staff, said bed comprising a base (1) equipped with means (2) for rolling on the ground and several elements intended to constitute for the patient supports (3,4,5) that can be equipped with bedding and constitute a support layer for the bust, the seat and the legs of the patient, these elements being carried by a support (6) manipulated by jacks, for varying the height and the orientation of the support (6) relative to the ground, characterized in that the support (6) carries three elements (3,4,5) substantially planar, intended respectively to constitute a folder (3) for the support of the bust and two supports (4,5) for the seat and the legs of the patient (12), these three elements being interconnected by joints consisting of links, the relative positions of these three elements can be modified by a bust cylinder (2 4), whose length between its ends is modifiable, a first of its ends being linked to the backrest (3) and the second being linked to a point of the support (6), the second end of the bust jack (24) being also linked to a rod (23) pivotally mounted by the backrest (3), this rod acting on said backrest (3) so that one of the points of the backrest (3) is forced to slide in a slide (25) connected to the support (6), said link being further rotatably articulated with an arm (26), which acts by a linkage 26a on an oblong recess connecting rod (27) pivoting (at 28) with respect to the support (6) for conferring the seat support (4) has a bearing movement relative to the support (6). 2. Bed according to claim 1, characterized in that the arm (26), at its end opposite to that which is close to the backrest (3), controls by the linkage (26a) an articulated parallelogram, including two adjacent vertices (6a). , 6b) are pivots carried on the support (6), the two other vertices being axes linked to the same hook (29), which maneuvers the leg support (5) to vary the angle it makes with the seat support (4). 3. Bed according to one of claims 1 or 2, characterized in that the carrier (6) constitutes a rectangular primary frame (15) defined by two longitudinal members (6a, 6b) substantially parallel to the longitudinal axis of the bed and by two transverse edges (6c, 6d), each carrying one end of a longitudinal beam (17), the axis of said beam (17) being, by two end pivots (17a, 17b), integral with the transverse edges (6c, 6d) of the support (6), the beam (17) forming part of a rectangular subframe (18) arranged between the borders (6c, 6d) and the longitudinal members (6a, 6b) of the primary frame (15) , the secondary chassis (18) being thus pivotable relative to the primary frame (15) around the axis of the beam (17), the primary frame (15) bearing on the secondary chassis (18), itself resting on a level member to vary the height of the support (6) relative to the ground on which the base (1) secondary ssis (18) and the primary frame (15) may further pivot about an axis perpendicular to the longitudinal axis of the bed and defined by two half pivots (19) forming a hinge and carried by the secondary frame (18), the secondary frame (18) thus forming with the primary frame (15), a flat subassembly which, thanks to at least one verticalizing jack (20), can come in a position forming an angle greater than 75 ° with respect to the running ground of the base (1). 4. Bed according to claim 3, characterized in that the verticalizing jack (20) exerts its thrust between the longitudinal beam (17), on the one hand, and a point related to the primary frame (15), on the other hand . 5. Bed according to claim 4, characterized in that the connection between the vertical jack (20) and the primary frame (15) is effected by interposing a set of rods (21,22) between the two elements connected so that to allow, when the primary frame (15) and secondary frame (18) come in a position close to the vertical, their small upward movement in the plane of the flat subassembly they constitute. 6. Bed according to one of claims 1 to 5, characterized in that the support (6) is, relative to the ground, an adjustable level by means of a level member consisting of two frames (13,14) pivotable relative to the base (1), each around an axis (13a, 16) perpendicular to the longitudinal axis of the bed, the orientation of said frames relative to the base (1) being obtained by at least one cylinder (8,9), whose body is secured to one of the frames and whose rod is secured to the other frame. 7. Bed according to claim 6, characterized in that the orientation of the two frames (13,14) is obtained by two cylinders (8,9) arranged head to tail on the secondary frame (18) parallel to the longitudinal axis of the bed, at least one (14) frames having a pivot (16) fixed on the base (1) while the other (13a) slides in a slide (43), which allows, according to the order cylinders, to give the longitudinal axis of the support (6) an inclination relative to the ground. 8. Bed according to one of claims 3 or 4, characterized in that the pivoting of the longitudinal beam (17) about its axis defined by its end pivots (17a, 17b) is caused by at least one jack (23) placed in right of one of said end pivots (17a), between a member of the secondary frame (18) and a tab connected to the primary frame (15) to rotate the beam (17) relative to the soil around its axis, which causes the support (6) and allows a pivoting of the patient (12) around the longitudinal axis of the bed. 9. Bed according to claim 8, characterized in that the pivoting of the beam (17) is obtained by means of a single lateral actuator (23), whose stroke modification causes pivoting in one direction or in the other way. 10. Bed according to claim 9, characterized in that the lateralizing jack (23) is carried by the secondary frame (18) at one end of the beam (17).