Back support

• US 4,993,409 A
• Filed: 02/08/1989
• Issued: 02/19/1991
• Est. Priority Date: 02/08/1989
• Status: Expired due to Term

• Current Assignee: Ossur hf
• Original Assignee: Royce Medical Company (Ossur hf)
• Inventors: Grim, Tracy E.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Pham, Huong Q.
• Application Number:
  US07/308,687
• Time in Patent Office: 741 Days
• Field of Search: 128/78, 128/68, 128/384, 128/399-402, 128/DIG. 20, 128/24.1, 128/24 R, 128/68.1, 5/431-433, 5/450
• US Class Current: 602/19
• CPC Class Codes: A61F 2007/0001 Body part
• CPC Class Codes: A61F 2007/0091 inflatable
• CPC Class Codes: A61F 5/028 Braces for providing support to the lower back, e.g. lumbo sacral supports
• CPC Class Codes: A61F 7/007 characterised by electric heating

Abstract

The back support is constructed from a back brace of elastic material which carries a gel pad and an air bladder. The brace supports the pad against lower back of the user in firm engagement. The air bladder is juxtaposed and generally co-extensive with the pattern containing the gel-like material. The air bladder has three individually inflatable chambers so that the user may adjust the pressure exerted on the pad and hence the support of the lower back. The gel pad may also contain a heating element to electrically heat the gel-like material. A rheostat may be provided for regulation of the heat.

Claims

1. A back support comprising:

a brace constructed of elastic fabric and generally dimensioned to fit around a lower torso of a user, said brace including an inner surface, an outer surface, a first section, a second section, a third section intermediate said first section and said second section, and means for releasably attaching said first section to said second section when said brace is stretched around said torso, said third section being adapted for positioning adjacent a lower back of a user, said third section having a first pocket adjacent said inner surface and a second pocket intermediate said first pocket and said outer surface;

a pad of gel-like material removably received by said first pocket;

an air bladder generally co-extensive with said pad, said bladder being removably received by said second pocket; and

means for inflating said air bladder to press said pad against said lower back.

2. A back support as set forth in claim 1 wherein said third section includes:

a first sheet and a second sheet of elastic fabric in a facing relationship and being of sufficient thickness and strength to provide support when stretched adjacent said lower back, each of said first sheet and said second sheet having a lower edge, an upper edge and lateral edges, said first sheet and said second sheet being joined together at said lower edge of each said sheet and at selected points along said lateral edges of each said sheet, said upper edge of each of said first sheet and said second sheet forming an opening of said second pocket; and

a third sheet of air permeable material in a facing relationship to said second sheet having a lower edge, an upper edge and lateral edges, said second sheet and said third sheet being joined together at said lower edge of said second sheet and said third sheet and said lateral edges of said second sheet and said third sheet, said upper edge of each of said second sheet and said third sheet forming an opening of said first pocket.

3. A back support as set forth in claim 2 wherein said air bladder includes:

means for securing said bladder within said second pocket.

4. A back support as set forth in claim 3 wherein said securing means includes;

a plurality of elongated straps having a first end and a second end, said first end of said straps being affixed to said bladder, said straps extending outwardly of said second pocket between said selected points along said lateral edges of said first sheet and said second sheet, said second end of said straps being releasably attached to an adjacent one of said first section and said second section of said brace.

5. A back support as set forth in claim 4 wherein said second end of said straps are attached to said outer surface of said brace.

6. A back support as set forth in claim 5 wherein said bladder has a first lateral edge and a second lateral edge, said first end of a first pair of said straps being affixed to said first lateral edge, said first end of a second pair of said straps being affixed to said second lateral edge.

7. A back support as set forth in claim 6 wherein said bladder includes a plurality of chambers, each of said chambers being individually inflatable by said inflating means.

8. A back support as set forth in claim 7 wherein said chambers include a first chamber and a second chamber, said first chamber extending substantially between said first lateral edge and a vertical midpoint of said bladder, said second chamber extending substantially between said second lateral edge and said vertical midpoint.

9. A back support as set forth in claim 8 wherein said chambers further include a third chamber extending between said first lateral edge and said second lateral and further between an upper edge and a lower edge of said bladder, said first chamber and said second chamber being less than the height of said third chamber.

10. A back support as set forth in claim 9 wherein said bladder includes a first wall a second wall and a third wall in a facing relationship to each other, said first wall being sealed to said third wall at selected locations to form said first chamber and said second chamber, said second wall being sealed to said third wall at selected locations to form said third chamber.

11. A back support as set forth in claim 10 wherein said walls are constructed from vinyl.

12. A back support as set forth in claim 7 wherein said inflating means includes:

a valve assembly carried by either one of said first section and said second section, said valve assembly having a plurality of one-way valves, each of said one-way valves having an outlet operatively communicating with the respective one of said chambers and an inlet; and

an air pump adapted for coupling to said inlet of a user selected one of said one-way valves.

13. A back support as set forth in claim 12 wherein said valve assembly further includes a plurality of pressure relief valves, each of said pressure relief valves being associated with said outlet of a respective one of one-way valves, said pressure relief valves being user activated to release pressure from a respective one of said chambers.

14. A back support comprising:

a brace constructed of elastic sheet material and generally dimensioned to fit around the lower torso of the user, said brace including a first section, second section, at third section intermediate said first section and said second sections said third section including said elastic sheet material having an inner side and an outer side, and being positionable adjacent the lower back of a user; and

said first and second sections extending from said third section to encompass the user'"'"'s body, and means for releasably attaching said first section to said second section toward the front of the user'"'"'s body when said brace is stretched around said torso;

an air bladder;

means for mounting said air bladder within said third section and adjacent said inner side of said elastic sheet material;

a gel pad;

means for mounting said gel pad adjacent said air bladder with said air bladder interposed between said inner side of said elastic sheet material and said gel pad, so that said gel pad is positioned adjacent said lower back, said gel pad and said air bladder being generally co-extensive with each other; and

means for inflating said air bladder to press said pad against said lower back;

whereby said elastic fabric and said air bladder, following inflation thereof, press said gel pad firmly against the user'"'"'s lower back.

15. A back support as defined inn claim 14 further comprising straps secured to said air bladder and extending through openings in said elastic sheet material and being secured to the outer side thereof to hold said air bladder against the inner side of said elastic sheet material.

16. A back support as defined in claim 14 wherein said air bladder includes a plurality of chambers, each of said chambers being individually inflatable by said inflating means.

17. A back support as defined in claim 14 wherein said air bladder includes at least three chambers, with two of said chambers being mounted side by side with one another, and a third chamber overlying said two chambers.