FR2662604A2 - Anti-bedsore cushions and mattresses for medical use - Google Patents

Abstract

Device for the prevention of bedsores for medical use. It consists of an enclosure of different laminated substances. This enclosure is filled with a polyurethane gel or any other synthetic MP or aqueous gel.

Description

The present invention relates to the new design of cushions, mattresses of all shapes, of different thicknesses, dimensions, effective in preventing bedsores. The new concept resides in the association of two products 1) An envelope constituted by a- Upper face mesh "TREVIRA" CS bi expandable from 50 to 90 Z which is a PES non-flammable (2) b- A film of aerated polyurethane (1 ) which consists of an insulating polyurethane membrane (1) with a modified molecular structure.

This film known under the brand ISOFILM with a thickness of 10 to 20 microns and a weight of 10 to 15 and 15 to 30 gr per M2 is stretchable in both directions to 400%.

This membrane is constituted by numerous channels (fig 3) (6) aerator taking into account that the channels (6) are thinner than the drops for the vapor impermeability of this membrane exceeds 4000 gr / m2 - 24 H .

c> A TRéVIRA lining (3) this ABC assembly is laminated d- Lower face of the envelope consisting of a polyurethane film of 50 to 80 microns (4) e) A polyether foam, Polyurethane thickness of 5 to 100 mm (5 ) f) A TREVIRA (6) identical to the TREVIRA described above (2) (1) (3)
The gel (7) crosslinks between the walls (3) and (4) g) This envelope is filled by injection using a non-return filling valve called the "duck" beak (fig 2) ( 8) and (9) welding of the assembly by high frequency HF

2) a- A casing (fig 3) consisting of a transparent opaque polyurethane film (from outside to inside) with a thickness of 50 to 80 microns stretchable in both directions (10) b- of a film from 50 to 80 microns (11) c- from a foam from 5 to 100 mm (polyether polyurethane) (12) d- a polyurethane film from 50 to 80 microns bi-extensible in color (13) the high frequency welded assembly HF

e) Non-return refilling valve called "duck" beak (fig 2) (8) and (9).

These envelopes are filled with a gel (14) 3) An envelope (fig 1) consisting of a- A polyamide or other bi-extensible mesh upper face from 50 to 400 Z (2) b- A 400 Z extensible polyurethane film with a thickness of 50 to 80 microns c- A polyamide or other mesh lining optional (3).

This assembly is laminated (A) (B) (C) d- underside of the envelope constituted by a polyurethane film thickness 50 to 80 microns (4) e) A polyether, polyurethane foam with a thickness of 5 to 100 mm (5) f) A polyamide or other bi-extensible mesh of 50 to 400 Z identical to the description above (2) (1) (3)
The gel comes to crosslink between the walls (3) and g) This envelope is filled by injection thanks to a non-return filling valve known as the "duck" beak (fig 2) (8) and (9) welding of the assembly high frequency HF

filled with a gel which may be a polybutadian gel crosslinked with an isocianate of the MDI type in order to obtain a self-retractable elastomeric mass, perfectly hydrophobic self-extinguishing with a viscosity of + or - 2.5 poises supporting a neighboring temperature 2000 at most and - 300 at least whose gel strength associated with the envelope exceeds 200 kgs for an elastomeric mass of 40 cm x 40 cm x 3.5 cm
For the good result of our invention to be used in the same viscosity and also treated self-extinguishing with known products in the manufacture of synthetic gels of the following gels:
Acetic or alcoholic gels of polyurethane urea
PVC gels
Polysyloxane gels
TIXOTROPE magnesium gels in aqueous solution
Gels obtained by polymerization of the oxyons of: popylene, ethylene, butylene, styrene, tetrahydrofuran in the presence of catalysts and the elastomeric mass of which is chosen as a function of viscosity to obtain a good result according to the invention.

The (fig 1) illustrates our first sectional envelope according to the description.

The (fig 3) illustrates our second sectional envelope
The (fig 4) illustrates our third envelope
The (fig 2) illustrates the positioning of the valves (8) and (9) on our envelopes.

In the case of our invention, they are used as a protective envelope for polyurethane gel or other synthetic gels mentioned above, self-shrinking.

These envelopes are wrinkle-resistant, do not crackle, washable, sterilizable, they are soft to the touch. They are less irritating than the neoprene envelopes described in a previous patent. They are better ventilated, they are isothermal, which polyurethane envelopes do not offer.

According to particular embodiments, the following can be produced: - seat cushions for the disabled - armchair cushions wardrobes - seat cushions for WCs - Elbow pads for heels - pierced cushions for healing of bedsores - cushions for low back pain - table mattresses operating - radiology table mattresses - ergonomic car cushions thermoformed or not the invention is particularly intended for the treatment of bedsores and low back pain and can be used on request for all particular applications for therapeutic purposes.

Claims (5)

1) anti-decubitus or anti-low back pain mattress device for medical use characterized by the combination of an envelope a- Upper face mesh "TREVIRA" CS bi-extensible from 50 to 90 Z which is a PES ININFLANABLE (2) b - A film of aerated polyurethane (1) which is constituted by an insulating polyurethane membrane (1) with a modified molecular structure. This film known under the brand ISOFILM with a thickness of 10 to 20 microns and a weight of 10 to 15 and 15 to 30 gr per M2 is extensible in both directions to 400 Z. This membrane is made up of numerous channels (fig 3) (6) aerator taking into account that the channels (6) are thinner than the drops for the vapor impermeability of this membrane exceeds 4000 Gr / M2 - 24 Hours . c- A double TRéVIRA (3) this set A + B + C is laminated. d- Lower face of the envelope consisting of a polyurethane film of 50 to 80 microns (4) e- A polyether foam, polyurethane thickness of 5 to 100 mm (5) f- A TREVERA (6) identical to the TREVIRA above described (2) (1) (3) g - This envelope is filled by injection using a non-return filling valve called the "duck" beak (fig 2) (8) and (9) welded by HF 2) An envelope (fig 3) constituted by a transparent opaque polyurethane film (from outside to inside) with a thickness of 50 to 80 microns extendable in both directions (10) b- a wire of 50 at 80 microns (11) c- from a foam of 5 to 100 mm (polyether polyurethane) (12) d- a polyurethane film of 50 to 80 microns bi-extensible in color (13) the HF welded assembly e) non-return filling valve called "duck" beak (fig 2) (8) and (9). These envelopes are filled with a gel (14) 3) An envelope (fig 1) consisting of a- A polyamide or other bi-extensible mesh upper face from 50 to 400 Z (2) b- A 400 Z extensible polyurethane film with a thickness of 50 to 80 microns c- A polyamide or other mesh lining optional (3). this assembly is laminated A + B + C d- Lower face of the envelope constituted by a polyurethane film thickness 50 to 80 microns (4) e) A polyether, polyurethane foam with a thickness of 5 to 100 mm (5) f ) A polyamide or other bi-extensible mesh of 50 to 400 Z identical to the description above (2) (1) (3) the gel comes to crosslink between the walls (3) and (4) g- This envelope is filled by injection thanks to a non-return filling valve called "duck" beak (fig 2) (8) and (9) welding of the HF assembly Gels obtained by polymerization of the oxides of propylene ethylene, butylene, stenne, tetrahydrofuran in the presence of catalysts and whose elastomeric mass is chosen according to the viscosity to obtain a good result according to the invention. Tixotropic magnesium gels aqueous solution Polysiloxane gels PVC gels Polysyloxane gels A butadian type polyurethane gel crosslinked with an NDI isocyanate or alternatively aqueous or alcoholic self-shrinking gels of polyurethane urea These thermo-welded or thermoformed envelopes are filled with a gel (7) (fig 1) which may be: 2) Device according to claim characterized by the possibility of choosing the gel and its viscosity according to the description. 3) Device according to claims (1) (2) characterized by the possibility of choosing the thickness of the envelope 4) Device according to claims (1) (2) (3) characterized in that the envelope can be thermo-welded, thermo-formed, thermo-formed + thermo-welded. 5) Device according to claims (1) (2) (3) (4) characterized by the envelope which may be of variable shape depending on use.