FR2778097A1 - Highly resilient foam cushion with ergonomic support, preventing bed sores - Google Patents

Abstract

The support (1) has a welded pocket (3). Inside this, two polyurethane gels (5A, 5B) of differing densities are introduced. An Independent claim is included for the method of making the cushion. The pocket (3) volume is delimited, possibly with block-like projections (4) corresponding with a first area (6A), into which the first gel (5A) is injected, to polymerize. The entire pocket is then welded, delimiting a second volume corresponding with a second area (6B) into which a second gel of different density is injected, to polymerize. Preferred features: The gels are each distributed in a volume delimiting two areas (6A, 6B) of differing sizes. The gels, contained by welds in their respective volumes, are unable to mix. They are colored. The pocket (3) is adhered on the upper face (2a) of the foam support. More than two gels may be used.

Description

"Anti bedsore cushion and sound

manufacturing process ".

  The subject of the present invention is an anti-decubitus cushion and its manufacturing process intended for use in armchairs, in particular for the disabled or the elderly. The object of the present invention can also be applied for the production of anti-decubitus mattresses used

  in hospitals.

  The invention relates to a three-dimensional anatomical cushion and its manufacturing process, easy to handle, stable and capable of supporting a weight of approximately 120 kilograms while keeping

its efficiency.

  The formation of bedsores is caused either by prolonged bed rest for a patient, or when the patient remains for a long time in a

armchair in seated position.

  To remedy this state of affairs, we have imagined i5 cushions (or mattresses) made of cellular, flexible materials, comprising a contact zone, consisting of protrusions between which the air

can circulate.

  These various achievements were not entirely satisfactory.

  In fact, the first prevention of bedsores in a seated position is to lift yourself regularly, whenever possible, to limit the compression of the blood vessels next to the bony projections (ischial region) and allow

tissue irrigation.

  The cushion according to the invention overcomes these drawbacks by allowing the pressure to be distributed and lowered at the level of the

support zones.

  The anti-decubitus cushion according to the invention consists of an ergonomic support of High Resilience foam with a width io suitable for armchairs. Its thickness is greater towards the front so that its upper part is inclined towards the bottom of the chair so that the patient is pushed towards the back of said chair. This cushion is characterized in that the aforementioned support is provided at its upper part with a welded pocket inside which two polyurethane gels of different density have been injected. The anti-decubitus cushion is also characterized in that the two polyurethane gels of different densities are distributed inside the welded pocket, each in a certain volume, corresponding to two surfaces of the cushion of different surfaces. It is also characterized in that the two gels, of different densities, are held by welding in their respective volumes and cannot mix. Advantageously, the gels can be colored in order to allow the observation of a leak or an untimely mixture during the manufacture of said cushion. The pocket is made of thermoformed polyurethane; it has studs on its upper face, its other face will be glued to the top of the foam support, after filling with

  1o the gels. The cushion and support assembly is covered with a cover.

  It should be noted that the elasticity of the pocket forming the cushion proper allows it to distribute and lower the pressure at

  level of support zones (ischial region).

  The method of manufacturing the bag is characterized in that if a first volume is delimited, possibly comprising studs, corresponding to a first surface, then a first gel of density 300 (according to NFT 77.104) is injected, by example colored blue; while this first gel is polymerizing, the entire pocket is welded thus delimiting the second volume, corresponding to a second surface, into which the second gel of density 240 (according to NFT 77.104) is then injected, for example of light color, which in turn polymerizes. It then remains to stick the pocket thus produced on the support in High Resilience foam. The cushion according to the invention thus produced is extraordinarily elastic; it distributes and lowers the pressure at the level

  s support zones (sacrum and ischial).

  We can also use more than two gels of different densities: for example, three or four gels depending on what we want

  get three or four more or less dense surfaces.

  It is also possible to produce an anti-decubitus mattress comprising one or more pockets inside which one or more gels of different densities will be injected so as to

  perform differential support on the entire body of a patient.

  The invention will be better understood on reading the description

  which follows and on examining the attached drawing representing one of the

is embodiments of the invention.

  In the figure, an anti-cushion has been represented in perspective view

  bedsores 1 produced according to the invention.

  This cushion 1 is formed of a support 2 conforming to the dimensions of an armchair. This support 2 in High Resilience foam is thicker towards the front so that the user is pushed towards the backrest

of the chair (not shown).

  This support 2 is provided, at its upper part 2A with a sealed pocket 3 comprising studs 4. In this pocket 3, two gels 5A-5B of different densities have been injected. These gels are distributed in two unequal volumes corresponding to two surfaces 6A-6B of different surfaces: surface 6A corresponds to the ischial region (ischion + sacrum); the surface 6B corresponding to the front and to the sides of the cushion (legs and rest of the buttocks). In the drawing, we have shaded one of the surfaces (6A), corresponding to the one whose gel has a higher density

300 (NFT 77.104).

  The pocket 3 thus produced is glued to the foam support 2.

  In this embodiment, the mobility of the studs 4 allows a micro massage of the body and their implantation ensures ventilation of the air. The elasticity of the assembly allows to distribute and lower the

  pressure at the support zones.

  Of course, we can in the same way, make an anti-decubitus mattress on the understanding that the configuration of the assembly

will be different.

Claims (7)

- CLAIMS -   1. Anti-decubitus cushion (1) consisting of an ergonomic support (2) in High Resilience foam characterized in that the support (1) is provided at its upper part with a welded pocket (3) inside which we introduced   two polyurethane gels (5A-5B) of different densities.   2. Anti-decubitus cushion (1) according to 1 characterized in that the two gels of different densities (5A-5B) contained in the welded pocket (3) are each distributed in a certain volume delimiting two surfaces (6A-6B) different areas. 3. Anti-decubitus cushion according to 1, characterized in that the two gels (5A-5B) are held by welding in their   respective volume and cannot mix.   4. Anti-decubitus cushion according to 1, characterized in that the gels (5A-5B) are colored.   5. Anti-decubitus cushion according to 1, characterized in that the pocket (3) is glued to the upper face (2A) of the support foam (2).   6. Method for manufacturing an anti-decubitus cushion according to 1, characterized in that a first volume is defined in the pocket (3), possibly with studs (4) corresponding to a first surface (6A) into which one injects a first gel (5A), which polymerizes, the entire pocket (3) is then welded delimiting a second volume corresponding to a second surface (6B) into which a second gel (5B) of different density is injected which in turn polymerizes. The pocket (3) thus produced   being glued to the foam support (2).   7. Method for manufacturing an anti-decubitus cushion according to 1 in which more than two gels of different densities are used.