Reinforced ankle and foot brace

• US 4,825,856 A
• Filed: 02/05/1988
• Issued: 05/02/1989
• Est. Priority Date: 02/05/1988
• Status: Expired due to Fees

• Current Assignee: Corn Products International Incorporated (Ingredion Incorporated)
• Original Assignee: Mikros USA, Inc.
• Inventors: Nelson, Ronald E.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Asher, Kimberly L.
• Application Number:
  US07/152,488
• Time in Patent Office: 452 Days
• Field of Search: 128/80, 128/80 G, 128/80 H, 128/581, 128/166, 128/165, 128/166.5, 128/586, 128/588, 128/595, 128/622, 128/589
• US Class Current: 602/27
• CPC Class Codes: A61F 5/0111 for the feet or ankles

Abstract

An ankle brace for relative confinement of the foot and ankle to help prevent injury to an individual engaged in active conduct, or inhibit aggravation of pre-existent injury, or provide protection during healing of an injury. A base includes an inner layer of sheet-like material shaped to be engaged in conforming relationship about the foot and ankle. A second layer covers the base. Lateral and medial support panels are embedded on lateral and medial sides of the brace between the inner and second layers. The support panels are formed of a mesh of plastic-type material to conform somewhat to the ankle and lower leg region when the brace in installed and tightly applied to the foot. In one form of the invention, lateral and medial rides are provided with pockets containing removable rigid stay members spanning the area between the lower leg and the upper foot in order to provide greater confinement to the ankle region upon initial healing of an injury. The stays are removable once the healing process is along the way and less restriction is required of the ankle.

Claims

1. An ankle brace to be worn on a foot and ankle in encompassing relationship to the medial and lateral sides of the ankle and proximal foot respectively, comprising:

a base including an inner layer of flexible sheet-like material shaped to closely encompass the ankle and proximal foot on the forward, rearward, medial and lateral sides thereof;

a second layer of flexible sheet-like material secured to the inner layer and coextensive therewith at least in the vicinity of the ankle and the adjacent anatomical portions above and below the ankle;

a medial support panel embedded between the inner layer and the second layer on the medial side of the base positioned to be in covering relationship to the ankle region on the medial side of the foot spanning the area above, below, forward and reward of the ankle when the base is installed on a foot;

a lateral support panel embedded between the inner layer and the second layer on the lateral side of the base positioned to be in covering relationship to the ankle region on the lateral side of the foot spanning the area above, below, forward and reward of the ankle when the base is installed on a foot;

medial stitch means on the medial side of the base between the inner layer and the second layer and the medial support panel, said medial stitch means extending back and forth across intermediate portions of the medial support panel between opposite edges thereof in order to hold the medial support panel in place;

lateral stitch means on the lateral side of the base between the inner layer and the second layer and the the lateral support panel, said lateral stitch means extending back and forth across intermediate portions of the lateral support panel between opposite edges thereof in order to hold the lateral support panel in place;

each support panel being a sheet-like member formed of a strong relatively inelastic flexible mesh material having a high porosity and resiliently bendable about an axis parallel to the plane of the sheet member.

2. The ankle brace of claim 1 wherein:

said inner layer and second layer are coextensive throughout in forming said base, said base having first and second forward edges that come together over the top of the foot and forward of the ankle toward one another, closure means for fixing the first and second forward edges with respect to one another when installed over the foot, said base having a top edge that closes around the lower leg portion and a lower edge that closes around the lower foot when the forward edges are brought together.

3. The ankle brace of claim 2 wherein:

said medial and lateral support panels each have a notch located forward of the ankle joint when the base is installed upon a foot.

4. The ankle brace of claim 2 wherein:

said medial and lateral stitch means includes zigzag patterns of seams formed on the lateral and medial sides of the base between the inner and second layers to hold the lateral and medial support panels in place.

5. The ankle brace of claim 4 wherein:

each support panel is shaped with a relatively straight upper portion extended from beneath the upper edge of the base to a position beneath the ankle in spanning relationship to the ankle, and forwardly curved at the lower portion to follow the contour of the foot.

6. The ankle brace of claim 5 wherein:

each said support panel has a notched portion where it begins the forward curvature to follow the contour of the foot.

7. The ankle brace of claim 6 wherein:

each support panel is formed of plastic.

8. The ankle brace of claim 6 wherein:

each support panel is formed of a grid work comprised of a first set of plastic strands and a second set of plastic strands interconnected to and perpendicular to the first set of plastic strands forming a mesh with a porosity greater than fifty percent and a density approximately between five and eight strands per inch.

9. The ankle brace of claim 1 including:

an outer layer of flexible sheet-like material secured to the second layer in encompassing relationship to the second layer at least on the medial and lateral sides of the base;

an elongate, narrow medial pocket fromed between the second layer and the outer layer on the medial side of the base extending from a location near the upper edge of the base downwardly to a position beneath the medial malleolus of the foot, a relatively rigid medial stay located in the medial pocket, said medial stay curved to conform to the anatomical shape of the medial portion of the foot and ankle when located in the medial pocket;

an elongate, narrow lateral pocket formed between the second layer and the outer layer on the lateral side of the base extending from a location near the upper edge of the base downwardly to a position beneath the lateral malleolus of the foot, a relatively rigid lateral stay located in the lateral pocket, said lateral stay curved to conform to the anatomical shape of the lateral portion of the foot and ankle when located in the lateral pocket.

10. The ankle brace of claim 9 wherein:

said outer layer is coextensive throughout with the second layer in forming said base, said base having first and second forward edges that come together over the top of the foot and forward of the ankle toward one another, closure means for fixing the first and second forward edges with respect to one another when installed over the foot, said base having a top edge that closes around the lower leg portion and a lower edge that closes around the lower foot when the forward edges are brought together.

11. The ankle brace of claim 10 wherein:

said medial and lateral support panels each having a notch located forward of the ankle joint when the base is installed upon a foot.

12. The ankle brace of claim 11 wherein:

each support panel is shaped with a relatively straight upper portion extended from beneath the upper edge of the base to a position beneath the ankle in spanning relationship to the ankle, and forwardly curved at the lower portion following the contour of the foot.

13. The ankle brace of claim 12 wherein:

each support panel is formed of plastic.

14. The ankle brace of claim 9 wherein:

the lateral pocket and the medial pocket each have an open top for removal of the lateral and medial stays.

15. The ankle brace of claim 14 wherein:

the lateral pocket and the medial pocket extend vertically downward from the upper edge of the base to a position beneath the malleolus and then curve forwardly following the anatomical contour of the foot, said lateral and medial stays having relatively straight upper portions, outwardly curved mid portions for accommodation of a portion of the malleolus, and inwardly and forwardly curved lower portions in conformance with the anatomical contour of the foot.

16. The ankle brace of claim 15 wherein:

means for fixing the first and second forward edges of the base with respect to the foot includes a lace.

17. The ankle brace of claim 16 including:

a tongue pivotally connected to one of the forward edges and movable into position covering the front superior foot and ankle portion when the forward edges are brought together.

18. The ankle brace of claim 17 wherein:

said first medial and lateral support panels have a porosity of greater than 50 percent.

19. The ankle brace of claim 1 wherein:

said medial and lateral support panels have a porosity of greater than 50 percent.

20. An ankle brace comprising:

base means formed of a flexible material and having inner and outer layers and shaped to closely encompass the ankle and proximal foot including the medial and lateral sides of the ankle and foot;

a medial support panel embedded in the base means between the inner and outer layers extending from a location on the lower leg above the ankle, downwardly in spanning relationship to the ankle region to a location beneath the ankle region in the vicinity of the foot, means securing the medial support panel between the inner and outer layers of the base comprised as stitching means sewn through the inner and outer layers of the medial side of the base and the medial support panel and extending back and forth across intermediate portions of the medial support panel between opposite edges thereof;

a lateral support panel embedded between the inner and outer layers of the base on the lateral side of the base, said lateral support panel extending from a location on the lower leg above the ankle, downwardly in spanning relationship to the ankle region to a location beneath the ankle region in the vicinity of the foot, means securing the lateral support panel to the base comprised as stitching means sewn though the inner and outer layers of the lateral side of the base and the lateral support panel and extending back and forth across intermediate portions of the lateral support panel between opposite edges thereof;

said medial and lateral support panels being of a width to extend circumferentially around the ankle from a position rearwardly thereof to a position forward thereof;

each support panel formed of a mesh material having a first set of resilient flexible parallel strands, and a second set of resilient flexible parallel strands perpendicular to the first set and interconnected therewith and defining a plurality of openings such that the support panel has a porosity greater than 50 percent.

21. The ankle brace of claim 20 wherein:

said base has first and second forward edges that come toward one another across the front superior foot portion, with an upper edge surrounding the lower ankle portion and a forward edge surrounding the forward foot portion when the first and second forward edges are brought together across the front superior foot portion, and including means securing the first and second edges in place with respect to one another and the foot.

22. The ankle brace of claim 21 wherein:

said forward edges have eyelets including a lace trained between the first and second forward edges for securing the edges with respect to one another.

23. The ankle brace of claim 22 wherein:

stitching means securing the support panels in place includes a plurality of zig-zag pattern seams.

24. The ankle brace of claim 23 wherein:

said medial and lateral support panels each have a notch located forward of the ankle joint when the base is installed upon a foot.

25. The ankle brace of claim 24 wherein:

each said support panel is shaped with a relatively straight upper portion extended from beneath the upper edge of the base to a position beneath the ankle in spanning relationship to the ankle, and forwardly curved at the lower portion to follow the contour of the foot.

26. An ankle brace comprising:

base means formed of a flexible material and having an inner layer and a first outer layer and shaped to closely encompass the ankle and proximal foot including medial and lateral sides for encompassing medial and lateral sides of the ankle and foot;

a medial support panel embedded in the base means between the inner and outer layers extending from a location on the lower leg above the ankle, downwardly in spanning relationship to the ankle region to a location beneath the ankle region in the vicinity of the foot, means securing the medial support panel between the inner and outer layers of the base;

a lateral support panel embedded between the inner and outer layers of the base on the lateral side of the base, said lateral support panel extending from a location on the lower leg above the ankle, downwardly in spanning relationship to the ankle region to a location beneath the ankle region in the vicinity of the foot, means securing the lateral support panel to the base;

said medial and lateral support panels being of a width to extend circumferentially around the ankle from a position rearwardly thereof to a position forward thereof;

each support panel formed of a mesh material having a first set of resilient flexible parallel strands, and a second set of resilient flexible parallel strands perpendicular to the first set and interconnected therewith and defining a plurality of openings such that the support panel has a porosity greater than 50 percent;

a second outer layer of flexible sheet-like material secured to the first outer layer in emcompassing relationship to the first outer layer at least on the medial and lateral sides of the base;

an elongate, narrow medial pocket formed between the first and second outer layers on the medial side of the base extending from a location near the upper edge of the base downwardly to a position beneath the medial malleolus of the foot, a relatively rigid medial stay located in the medial pocket, said medial stay curved to conform to the anatomical shape of the medial portion of the foot and ankle when located in the medial pocket;

an elongate, narrow lateral pocket formed between the first and second outer layers on the lateral side of the base extending from a location near the upper edge of the base downwardly to a position beneath the lateral malleolus of the foot, a relatively rigid lateral stay located in the lateral pocket, said lateral stay curved to conform to the anatomical shape of the lateral portion of the foot and ankle when located in the lateral pocket.

27. The ankle of claim 26 wherein:

said base has first and second forward edges that come together over the top of the foot and forward of the ankle toward one another, closure means for fixing the first and second forward edges with respect to one another when installed over the foot, said base having a top edge that closes around the lower leg portion and a lower edge that closed around the lower foot when the forward edges are brought together.

28. The ankle of claim 27 wherein:

said medial and lateral support panels each having a notch located forward of the ankle joint when the base is installed upon a foot.

29. The ankle brace of claim 26 wherein:

the lateral pocket and the medial pocket each have an open top for removal of the lateral and medial stays.

30. The ankle brace of claim 26 wherein:

the lateral pocket and the medial pocket have open tops for removal of the stays and extend vertically downward from the upper edge of the base to a position beneath the malleolus and then curve forwardly following the anatomical contour of the foot, said lateral and medial stays having relatively straight upper portions, outwardly curved mid portions for accommodation of a portion of the malleolus, and inwardly and forwardly curved lower portions in conformance with the anatomical contour of the foot.

31. The ankle brace of claim 30 wherein:

said forward edges have eyelets and said means for fixing the first and second forward edges of the base with respect to the foot includes a lace.

32. The ankle brace of claim 31 including:

a tongue pivotally connected to one of the forward edges and movable into position covering the front superior foot and ankle portion when the forward edges are brought together.