Footgear with pressure relief zones

• US 5,329,705 A
• Filed: 02/16/1993
• Issued: 07/19/1994
• Est. Priority Date: 02/16/1993
• Status: Expired due to Term

• Current Assignee: Ossur hf
• Original Assignee: Royce Medical Company (Ossur hf)
• Inventors: Montag, Eric G., O'Donnell, Kevin R., Grim, Tracy E.
• Primary Examiner(s): Sewell, Paul T.
• Assistant Examiner(s): PATTERSON, MARIE D
• Application Number:
  US08/017,818
• Time in Patent Office: 518 Days
• Field of Search: 36/43, 36/44, 36/71, 36/88, 36/95, 36/93, 36/110, 36/140, 36/155, 602/23
• US Class Current: 36/88
• CPC Class Codes: A43B 1/0009 made at least partially of alveolar or honeycomb material
• CPC Class Codes: A43B 13/40 with cushions
• CPC Class Codes: A43B 17/02 wedge-like or resilient
• CPC Class Codes: A43B 17/026 filled with a non-compressible fluid, e.g. gel, water
• CPC Class Codes: A43B 17/035 provided with a pump or valve
• CPC Class Codes: A43B 7/1463 with removable pads to allow custom fit
• CPC Class Codes: A43B 7/1464 with adjustable pads to allow custom fit
• CPC Class Codes: A43B 7/20 Ankle-joint supports or holders
• CPC Class Codes: A61F 5/0111 for the feet or ankles
• CPC Class Codes: A61F 5/012 inflatable

Abstract

Footgear is provided with an inner sole having a grid of removable resilient elements to permit removal of selected elements to provide relief to ulcerated or otherwise injured areas of the foot. An air bladder may underlie the inner sole, preferably with additional cushioning material within the air bladder. A walker with a soft goods type support may be provided with the foregoing type of inner sole within the support.

Claims

1. A walker including pressure relief areas for the foot comprising:

a walker frame including an outer sole and struts extending from said sole upward;

a soft goods type support for enclosing the ankle, lower leg and at least a substantial portion of the foot;

means for securing said support to said frame;

a bladder for containing air mounted in said walker above said outer sole;

an inner sole mounted in said walker above said bladder, said inner sole having a plurality of relief zone areas arranged in a grid pattern constituting separate resilient sections removably secured on their lower surfaces to an underlying flexible sheet and together forming a normally substantially smooth surface for engagement by the foot, said sections being individually removable to provide localized pressure relief to selected areas of the foot; and

said resilient sections being directly adjacent one another to form said grid;

whereby one or a plurality of said adjacent sections may be removed at any desired area of the inner sole to provide relief corresponding to the afflicted zone of the foot.

2. A walker as defined in claim 1 wherein said inner sole has a grid configuration with said removable sections being hexagonal.

3. A walker as defined in claim 1 wherein said inner sole has a grid configuration with said removable sections are rectangular.

4. A walker as defined in claim 1 wherein said inner sole includes a plurality of layers, with the layer closest to the foot being substantially softer and more resilient than other layers.

5. A walker as defined in claim 1 wherein said inner sole extends to the rear beyond the heel of a patient and upward along the rear surface of the heel.

6. A walker as defined in claim 1 further comprising means connected to said support for extending around the instep to hold the foot back into said support and in engagement with said inner sole.

7. A walker as defined in claim 1 whereon hook and loop type fabric fastening arrangements are provided to hold the support to the walker frame, and onto the patient'"'"'s foot.

8. A walker as defined in claim 1 further comprising resilient material within the bladder for providing additional cushioning for the foot.

9. Footgear including pressure relief areas for the foot, comprising:

an outer sole;

a bladder for containing fluid, mounted in said footgear above said outer sole;

said footgear including a plurality of relief zone areas arranged in a grid pattern constituting separate resilient sections removably secured on their lower surfaces and together forming a normally substantially smooth surface for engagement by the foot, said sections being individually removable to provide localized relief to selected areas of the foot;

said separate resilient sections being mounted in said footgear above said bladder;

said resilient sections being directly adjacent one another to form said grid; and

each said resilient section having a thickness or depth comparable to its maximum transverse dimension;

whereby one or a plurality of said adjacent sections may be removed at any desired area of the inner sole to provide relief corresponding to the afflicted zone of the foot.

10. Footgear including pressure relief areas for the foot, comprising:

an outer sole;

a bladder for containing fluid, mounted in said footgear above, said outer sole; and

an inner sole mounted in said footgear above said bladder, said inner sole having a plurality of relief zone areas arranged in a grid pattern constituting separate resilient sections removably secured on their lower surfaces to an underlying flexible sheet and together forming a normally substantially smooth surface for engagement by the foot, said sections being individually removable to provide localized relief to selected areas of the foot;

said resilient sections being directly adjacent one another to form said grid; and

said grid comprising most of said inner sole.

11. Footgear as defined in claim 10 wherein said inner sole has a grid configuration with said removable sections being hexagonal.

12. Footgear as defined in claim 10 wherein said inner sole has a grid configuration with said removable sections being rectangular.

13. Footgear as defined in claim 10 wherein said inner sole includes a plurality of layers, with the layer closest to the foot being substantially softer and more resilient than other layers.

14. Footgear as defined in claim 10 wherein said inner sole extends to the rear beyond the heel of the patient and upward along the rear surface of the heel.

15. Footgear as defined in claim 10 further comprising means forming part of said footgear for extending around the instep to hold the foot back into engagement with said inner sole.

16. Footgear including pressure relief areas for the foot, comprising:

an outer sole;

a bladder for containing fluid, mounted in said footgear above, said outer sole; and

an inner sole mounted in said footgear above said bladder, said inner sole having a plurality of relief zone areas arranged in a grid pattern constituting separate resilient sections forming a normally substantially smooth surface for engagement by the foot, said sections being individually removable to provide localized relief to selected areas of the foot;

said grid comprising most of said inner sole;

said resilient sections being directly adjacent one another to form said grid; and

each said resilient section having a thickness or depth comparable to its maximum transverse dimension;

whereby one or a plurality of said adjacent sections may be removed at any desired area of the inner sole to provide relief corresponding to the afflicted zone of the foot.