US 5,031,261 A · Mattress overlay for avoidance of decubitus ulcers

Abstract

A laminated foam mattress overlay for preventing the formation of decubitus ulcers in bedridden individuals. The mattress overlay includes an upper layer of polyurethane foam laminated to a base layer of a different polyurethane foam. The upper lay features a polyurethane foam which is of a higher density than the base layer. The upper layer also includes a higher initial softness ratio than the base layer. The base layer has higher 5, 25 and 65% indentation load deflection values (ILD) than the corresponding ILD values for the upper layer which is attributable to the firmer support provided by the foundation or base layer. The base layer is preferably thicker than the upper layer which can include a checkerboard-like upper surface. The combination of layers provides for a reduction in pressure points in the areas of greatest concern such as the hip and heel. The combination of layers work together to provide firm, comfortable support while distributing loads in the high risk areas of the body to help in avoiding the formation of ulcers.

Claims29

Dependent claims

A mattress overlay for avoiding decubitus ulcers, comprising:

a base layer of polyurethane foam material having a density between about 1.80 to 2.00 lbs/ft.sup.3;
an upper layer affixed to an upper surface of said base layer, said second layer being formed of polyurethane foam and having a density between about 2.30 to 2.70 lbs/ft.sup.3 ;
and wherein said base layer has a 5% indentation load deflection between about 26 to 38, a 25% indentation load deflection between about 39 to 49 and a 65% indentation load deflection between about 70 to 105.

Dependencies are inferred from the claim text.

Mattress overlay for avoidance of decubitus ulcers

Life of this patent

Mattress overlay for avoidance of decubitus ulcers

Life of this patent

Abstract

Claims29