MEDICAL ANTI-DESORECREAS CUSHIONS AND MATTRESSES.

Abstract

Dispositif pour la prévention des escarres à usage médical. Il est constitué d'une enveloppe de différentes matières laminées. Cette enveloppe est remplie d'un gel de polyuréthane ou tout autre MP synthétique ou gel acqueux.

Description

The present invention relates to the novel design of cushions and mattresses of all shapes, thicknesses, and dimensions, effective in preventing pressure ulcers. The novel design consists of the combination of two products: 1) A cover made of: a) A top layer of "TREVIRA" CS bi-stretch mesh (50 to 90 Z) which is a non-flammable PES (2); b) A ventilated polyurethane film (1) which is made of an insulating polyurethane membrane (1) with a modified molecular structure. This film, known under the brand name 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 by 400%. This membrane is made up of many channels (fig 3) (6) aerator given that the channels (6) are finer 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 known as a "duckbill" valve (fig 2) (8) and (9) welding of the assembly by high frequency HF 2) a- An envelope (fig 3) consisting of an opaque transparent polyurethane film (from the outside in) 50 to 80 microns thick, stretchable in both directions (10) b- a 50 to 80 micron film (11) c- a 5 to 100 mm thick foam (polyether polyurethane) (12) d- a 50 to 80 micron bi-stretchable colored polyurethane film (13) the whole assembly welded high frequency HF e) Non-return refilling valve known as "duck" beak (fig 2) (8) and (9). These envelopes are filled with a gel (14) 3) An envelope (fig 1) consisting of a- A top face of polyamide mesh or other bi-extensible from 50 to 400 Z (2) b- A 400 Z stretchable polyurethane film with a thickness of 50 to 80 microns c- A lining of polyamide mesh or other (3) optional. This assembly is laminated (A) (B) (C) d- lower face of the envelope consisting of a polyurethane film 50 to 80 microns thick (4) e) A polyether, polyurethane foam 5 to 100 mm thick (5) f) A polyamide or other bi-extensible mesh 50 to 400 Z identical to the description above (2) (1) (3) The gel cross-links between the walls (3) and (g). This envelope is filled by injection using a non-return filling valve known as a "duckbill" valve (Fig. 2). (8) and (9) welding of the high-frequency (HF) assembly filled with a gel, possibly a polybutadiene gel crosslinked with an MDI-type isocyanate to obtain a self-shrinking, perfectly hydrophobic, self-extinguishing elastomeric mass with a viscosity of approximately 2.5 poises, withstanding temperatures up to 2000°C and down to -300°C, the resistance of the gel associated with the casing exceeding 200 kg for an elastomeric mass of 40 cm x 40 cm x 3.5 cm For the proper functioning of our invention, to be used in the same viscosity and also treated with self-extinguishing agents known in the manufacture of synthetic gels, the following gels are required: Aqueous or alcoholic polyurethane urea gels PVC gels Polysyloxane gels TIXOTROPE magnesium gels in aqueous solution Gels obtained by polymerization of oxyons of: polypropylene, ethylene, butylene, styrene, tetrahydrofuran in the presence of catalysts and whose elastomeric mass is chosen according to viscosity to obtain a good result according to the invention. Figure (fig 1) illustrates our first envelope in cross-section according to the description. Figure 3 illustrates our second envelope in cross-section. Figure 4 illustrates our third envelope Figure (fig 2) illustrates the positioning of valves (8) and (9) on our envelopes. In the case of our invention they are used as a protective envelope for the polyurethane gel or other synthetic gels mentioned above, self-shrinking. These covers are wrinkle-free, non-crinkling, washable, sterilizable, and soft to the touch. They are less irritating than the neoprene covers described in a previous patent. They are better ventilated and are insulating, which polyurethane covers do not offer. According to particular embodiments, the following may be manufactured: - seat cushions for disabled people - cushions for commode chairs - seat cushions for toilets - wedges for elbows and heels - perforated cushions for the healing of bedsores - cushions for lower back pain - mattresses for operating tables - mattresses for radiology tables - ergonomic car cushions, thermoformed or not. The invention is particularly intended for the treatment of bedsores and lower back pain and may be used on request for all particular applications for therapeutic purposes.

Claims

DEMANDS 1) Anti-bedsore or anti-lumbar pain mattress device for medical use characterized by the combination of a cover a- Upper face "TREVIRA" CS bi-extensible mesh from 50 to 90 Z which is a NON-INFLANEABLE PES (2) b- An aerated polyurethane film (1) which is made up of an insulating polyurethane membrane (1) with a modified molecular structure. This film, known under the brand name 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 at 400 Z. This membrane is made up of many channels (fig 3) (6) aerator given that the channels (6) are finer 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 casing made of a 50 to 80 micron polyurethane film (4) e- A polyether, polyurethane foam, 5 to 100 mm thick (5) f- A TREVERA (6) identical to the TREVIRA described above (2) (1) (3) g - This casing is filled by injection using a non-return filling valve known as a "duckbill" valve (fig 2) (8) and (9) HF welding 2) An envelope (fig. 3) consisting of a transparent opaque polyurethane film (from the outside in) 50 to 80 microns thick, stretchable in both directions (10) b- a 50 to 80 micron thread (11) c- a 5 to 100 mm thick foam (polyether polyurethane) (12) d- a 50 to 80 micron bi-stretchable colored polyurethane film (13) the whole assembly HF welded e) non-return filling valve known as "duck" beak (fig 2) (8) and (9). These envelopes are filled with a gel (14) 3) An envelope (fig 1) consisting of a- A top face of polyamide mesh or other bi-extensible from 50 to 400 Z (2) b- A 400 Z stretchable polyurethane film with a thickness of 50 to 80 microns c- A lining of polyamide mesh or other (3) optional. This assembly is laminated A + B + C d- Lower face of the envelope consisting of a polyurethane film 50 to 80 microns thick (4) e) A polyether, polyurethane foam 5 to 100 mm thick (5) f) A polyamide or other bi-extensible mesh 50 to 400 Z identical to the description above (2) (1) (3) the gel crosslinks between the walls (3) and (4) g- This envelope is filled by injection using a non-return filling valve called a "duckbill" valve (fig 2) (8) and (9) welding of the assembly HF These heat-sealed or thermoformed envelopes are filled with a gel (7) (fig 1) which may be: A butadiene-type polyurethane gel crosslinked with an NDI-type isocyanate, or aqueous or alcoholic self-shrinking urea polyurethane gels Polysyloxane gels PVC gels Polysiloxane gels Magnesium thixotropic gels aqueous solution Gels obtained by polymerization of propylene ethylene, butylene, stenne, tetrahydrofuran oxides in the presence of catalysts and whose elastomeric mass is chosen according to the viscosity to obtain a good result according to the invention. 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 heat-sealed, thermoformed, thermoformed + heat-sealed. 5) Device according to claims (1) (2) (3) (4) characterized by the envelope which may be of variable shape depending on the use.