Modular body support system

• US 5,101,527 A
• Filed: 10/29/1990
• Issued: 04/07/1992
• Est. Priority Date: 10/29/1990
• Status: Expired due to Term

• Current Assignee: Foamex Innovations Operating Company
• Original Assignee: Convo Corporation
• Inventors: Rogers, John E., Wadsworth, Ralph A. III
• Primary Examiner(s): Nicholson, Eric K.
• Application Number:
  US07/604,527
• Time in Patent Office: 526 Days
• Field of Search: 5/464, 5/481, 5/470, 5/471, 5/465, 5/468, 5/473, 5/474, 5/496, 5/497
• US Class Current: 5/727
• CPC Class Codes: A47C 27/144 inside the mattress or cushion
• CPC Class Codes: A47C 27/146 on the outside surface of the mattress or cushion
• CPC Class Codes: A47C 27/148 of different resilience
• CPC Class Codes: A47C 27/15 consisting of two or more layers A47C27/16 takes precedence
• CPC Class Codes: A47C 31/123 for beds or mattresses
• CPC Class Codes: A61G 7/05715 with modular blocks, or inserts, with layers of different material
• CPC Class Codes: Y10S 5/923 Bedclothing

Abstract

A modular body support system for a prone, supine or side lying person having a plurality of individual functional portions for reacting with body tissues to establish comfort to the person as well as lessen the chances of tissue breakdown and ulcerations. The functional portions having construction such as to prevent shear loading which may cause such tissue breakdown. In addition, the system includes an oversize cover of material to reduce the coefficient of friction and conform easily to the contours of the system as defined by body pressures thereon.

Claims

1. A modular body support system for a prone, supine or sidelying person formed of urethane foam adapted to produce comfort for said person when lying thereon as well as reducing tissue trauma of said person, said system comprising:

a frame including a pair of spaced apart, generally parallel side walls and a pair of spaced apart, generally parallel end walls extending between said side walls, said walls being made of a first density of urethane foam; and

a plurality of insert members interfitted within said frame to receive various areas of said person when lying thereon, said insert members being of said first density of urethane foam or differing pre-selected densities of urethane foam, wherein at least two of said insert members at the end extremities of said frame include a construction different from any insert members intermediate said extremities members; and

an oversize cover having a top portion overlying said frame and said insert members and an overhanging portion to extend over said walls with a length and width greater than the height of said walls wherein said length and width greater than said height of said walls is trucked under said overhanging portion and said portion is releasably secured to said walls, and said cover is of such a material as to have a low co-efficient of friction when encountering said frame and said inserts as to move easily with the contour and depression of said insert members when a person lies thereon.

2. A modular body support system as defined in claim 1 wherein:

said frame includes a bottom foam pad underlying said frame which is affixed thereto.

3. A modular body support system as defined in claim 1 wherein:

said frame has a top surface and said insert members each have a top surface, and said insert members top surfaces are spaced below said frame top surface forming a pocket within said frame.

4. A modular body support system as defined in claim 1 wherein there is provided:

a base cover that encompasses the bottom foam pad and the sides of said walls; and

said length and width of said oversize cover greater than the height of said walls of said frame are releasably secured to the portion of said base cover that extends up the sides of said walls.

5. A modular body support system as defined in claim 4 wherein:

said base cover is fluid impervious, flame retardant, anti-static, anti-microbial and bacteriostatic.

6. A modular body support system as defined in claim 1 wherein:

each of said inserts includes a top foam cover of a soft low density foam.

7. A modular body support system as defined in claim 6 wherein there is included:

a head insert member extending across said frame between said side walls and abutting one of said end walls, said head insert member including a plurality of parallel cross cuts extending across said insert, and a plurality of parallel opposite cuts extending normal to said parallel cross cuts, said cuts extending through said top foam cover into said member forming vertical quadrilateral columns, each of said cuts stopping short of intersecting a cut normal thereto and forming a vertical web at the corners of said vertical columns extending downwardly and terminating at the terminus of said cuts, whereby said columns each have limited individual compression and contour movements with a head thereon, yet movable as an integrated unit so that said top foam surface will rotate normal to the load applied.

8. A modular body support system as defined in claim 7 wherein there is:

a foot insert member extending across said frame between said side walls and abutting the other of said end walls remote from said head insert member, said foot insert member of a lesser height than said head insert member forming a depression to receive the heels of a person when in a supine position on said system and to receive the ankles of a person when in a sidelying position, said foot insert members including a plurality of parallel cross cuts extending across said insert, and a plurality of parallel opposite cuts extending normal to said parallel cross cuts, said cuts extending through said top foam cover into said member forming vertical quadrilateral columns, each of said cuts stopping short of intersecting a cut normal thereto and forming a vertical web at the corners of said vertical columns extending downwardly and terminating at the terminus of said cuts, whereby said columns each have limited individual compression and contour movements with a foot thereon, yet movable as an integrated unit so that said top foam surface will rotate normal to the load applied.

9. A modular body support system as defined in claim 1 wherein there is included:

a disposable oversize cover adapted to overlie said oversize cover and is releasably secured to said frame and said disposable oversize cover may be fluid proof and flame retardant.

10. A modular body support system as defined in claim 9 wherein:

said disposable oversize cover is of a material differing in thickness from said oversize cover.

11. A modular body support system as defined in claim 2 wherein:

there are three additional insert members between said extremity inserts interfitted within said frame and extending between said side walls, one of said members is a scapula shoulder relief insert, a second of said members is a sacral trochanter relief insert and said third member is a leg relief insert, each of said members including cross cuts extending between said side walls and terminating within said insert, each adapted to spread and roll apart and present a low-shear environment to receive a body extremity resting thereon.

12. A modular body support system as defined in claim 11 wherein said sacral trochanter relief insert includes:

at least one vertical cavity extending completely through said top foam cover, said insert and said bottom foam pad; and

a plurality of cuts extending into said insert but not therethrough surrounding said cavity, said cuts offering additional flexibility to the wall of said cavity whereby with a body resting thereon said wall at said top foam cover will roll, reducing shear and injury to said body tissues in the area of said cavity.

13. A modular body support system as defined in claim 12 wherein:

there are a plurality of vertical cavities; and

a plurality of cuts surrounding each of said cavities.

14. A modular body support system for a person in a horizontal lying position, said system being adapted to relieve tissue trauma and said system includes a urethane foam frame member having elongated parallel spaced apart side walls and a pair of parallel spaced apart end walls therebetween, the improvement comprising:

a plurality of foam body support insert members secured within said frame and each having characteristics to react independently of each other when engaged by protruding parts of said person lying thereon, yet each insert constructed to reduce tissue trauma, two of said inserts being extremity inserts and each having generally the same cut configurations; and

at least one oversize cover portion overlying said frame and insert members and an overhanging portion to extend over said walls with a length and width greater than the height of said walls wherein said length and width are greater than said height of said walls and is tucked under said overhanging portion and is releasably secured to said walls, and said cover is of such a material as to have a low co-efficient of friction when encountering said frame and said inserts as to move easily with the contour and depressions of said insert members when said person lies thereon.

15. A system as defined in claim 14 wherein said two extremity inserts are:

a head insert member and a foot insert member each having a plurality of parallel cross cuts extending across said insert, and a plurality of parallel opposite cuts extending normal to said parallel cross cuts, said cuts extending into said insert but not entirely therethrough forming vertical quadrilateral columns and each of said cuts stopping short of intersecting a cut normal thereto and forming a vertical web at the corners of said vertical columns extending downwardly and terminating at the terminus of said cuts, whereby said columns each have limited individual compression and contour movements with said head and feet thereon, yet movable as an integrated unit so that no individual cut will cause tissue trauma; and

said foot insert is of a height in said frame less than the height of said head insert member.

16. A system as defined in claim 14 wherein there is included:

a disposable oversize cover adapted to overlie said oversize cover and is releasably secured to said frame and said disposable oversize cover is fluid proof and flame retardant.

17. In a system as defined in claim 16 wherein:

said disposable oversize cover is of a material thinner than said oversize cover.

18. A system as defined in claim 15 wherein:

there are three additional insert members between said extremity inserts interfitted within same frame and extending between said side walls, one of said members is a scapula shoulder relief insert, a second of said members is a sacral trochanter relief insert and said third member is a leg relief insert, each of said additional members including cross cuts extending between said side walls and terminating within said insert, and each is adapted to spread and roll apart and present a low-shear environment to receive a body extremity resting thereon.

19. A system as defined in claim 18 wherein said sacral trochanter relief insert includes:

at least one vertical cavity extending completely through said insert; and

a plurality of cuts extending into said insert but not therethrough surrounding said cavity, said cuts offering additional flexibility to the wall of said cavity whereby with a body resting thereon said wall at said top cover wall will roll eliminating shear and injury to body tissues in the area of said cavity.

20. A system as defined in claim 14 wherein said frame has a top surface and said plurality of insert members each have generally co-planar top surfaces, and said co-planar top surfaces of said insert member are spaced below said frame top surface forming a pocket within said frame.