Comfortable orthopaedic support and the method of making the same

• US 7,018,351 B1
• Filed: 08/29/1997
• Issued: 03/28/2006
• Est. Priority Date: 08/29/1996
• Status: Expired due to Fees

• Current Assignee: Ossur hf
• Original Assignee: Royce Medical Company (Ossur hf)
• Inventors: Grim, Tracy E., Iglesias, Joseph M., Arnold, William K., Johnson, Eric E.
• Primary Examiner(s): Huson, Gregory L.
• Assistant Examiner(s): Mathew, Fenn C.
• Application Number:
  US09/857,396
• Time in Patent Office: 3,133 Days
• Field of Search: 602/5, 602/14, 602/23, 602/27, 602/62, 602/65, 129/882, 2 1/6, 2 2/2, 245/5, 36/89, 36/90, 361/40
• US Class Current: 602/27
• CPC Class Codes: A61F 5/0111 for the feet or ankles

Abstract

An ankle support (100) is constructed using a molded pad (110) and a rigid shell (112). The pad (110) and the shell (112) may be sealed together to form a bladder-pad cushion for comfort. The internal structure of the pad (110) is molded to include geometrically shaped cells of various size, shape and thickness to provide differing levels of localized comfort to the user of the ankle support (100). The pad may be made from a thermoplastic elastomer (TPE) which is spring-like and resists compression sets. The pad may include integrally-molded fingers extending to the shell. The fingers may have different lengths in one or more regions, in order to increase the cushioning effect in a particular region. The pad/shell combination may form a sealed bladder, and a pneumatic pump may be provided in conjunction with the shell so that the user can inflate the bladder.

Claims

1. An orthopaedic support for comfortably supporting the ankle of a wearer, comprising:

an outer shell formed for fitting about the lower leg of the wearer;

a molded pad bonded to said shell;

an overmold that substantially surrounds said pad and said shell substantially sealing together said orthopaedic support;

said pad having a base layer;

said pad having a plurality of molded substantially hollow structures to provide differing levels of cushioning support for the wearer of the orthopaedic support at different areas of the pad, at least some of said structures having a different dimension than others of said structures; and

said hollow structures extending substantially perpendicular from said base layer;

said hollow structures being integrally molded with said base layer;

wherein said molded structures comprise walls, said walls providing cushioning support for the ankle and having a self supporting free standing construction even without inflating or otherwise filling said molded structures with air, liquid, or gel.

2. An orthopaedic support as defined in claim 1 further comprising an overmold molded onto said shell, said pad being bonded to said overmold.

3. An orthopaedic support as defined in claim 1 further comprising means for securing said ankle support around the lower leg;

and a heel strap for securing said orthopaedic support.

4. An orthopaedic support as defined in claim 1 wherein an inner liner of cloth is secured to said pad on the surface of said pad facing the lower leg of the user.

5. An orthopaedic support as defined in claim 4 wherein said liner is integrated with said pad.

6. An orthopaedic support in accordance with claim 5 wherein said liner includes openings allowing air to pass in and out of said structures.

7. An orthopaedic support as defined in claim 1, wherein said pad further comprised a plurality of fingers extending from said pad to said outer shell.

8. An orthopaedic support as defined in claim 7, wherein said fingers are integrally molded with said pad.

9. An orthopaedic support as defined in claim 7, wherein some of said fingers have a different length than others of said fingers.

10. An orthopaedic support for comfortably supporting a select area of the anatomy, said support comprising:

a substantially rigid shell; and

an injection molded resilient pad between said shell and the anatomy of the user, said pad configured with geometric shaped cells providing cushioning and support wherein said pad is molded directly onto said shell as channels, domes, and other supportive geometrical shapes to cushion and to support the anatomy;

said pad including a base layer, and said cells being integrally molded with said base layer and extending substantially perpendicular from said base layer;

wherein said cells comprise walls, the structure of said walls providing cushioning support for the select area of the anatomy and having a self-supporting free-standing construction even without inflating the cells with air or otherwise filling said cells with liquid, or gel.

11. An orthopaedic support as defined in claim 10 further comprising an overmold molded onto said shell, said pad being connected to said overmold.

12. An orthopaedic support as defined in claim 10 wherein said pad is a bladder having a plurality of cells having cushioning geometric shapes and protrusions, each cell with predetermined size, depth, and wall thickness providing varying levels of localized support and cushion in different areas of said support.

13. An orthopaedic support as defined in claim 12 wherein said geometric shapes for said bladder are selected from the group consisting of ribs, cylinders, honeycomb, and regular and irregular polygons.

14. An orthopaedic support as defined in claim 12 wherein channels are provided between said cells for allowing a fluid to pass between and among said cells, creating a massaging effect on the ankle and promoting blood flow.

15. An orthopaedic support as defined in claim 10 wherein said pad further comprises a foam core for softer inner cushion.

16. An orthopaedic support as defined in claim 10 wherein a co-molded lip around said shell and around said pad seals said pad such that air is trapped between said pad and said shell, creating a bladder with air cushion.

17. An orthopaedic support as defined in claim 10 wherein said pad includes a plurality of fingers extending from said pad to said shell.

18. An orthopaedic support comprising:

a substantially rigid shell formed to fit a limb of a user;

an injection molded resilient pad for cushioning the shell to the limb wherein said pad includes interconnected cells, and further comprises a heel bladder fluidically coupled to said pad for varying the pressure exerted by said pad on the limb of the user;

said injection molded pad being integrally molded in a single molding step; and

said pad including a base layer and integrally molded structures protruding from said base layer, said structures having a self supporting free standing construction even without inflating or otherwise filling said structures with air, liquid, or gel.

19. An orthopaedic support pad as defined in claim 18 wherein said pad is a bladder having geometrically shaped cells to provide differing levels of localized cushioning and a plurality of channels molded between said cells to allow air and fluid to pass between said cells.

20. An orthopaedic support as defined in claim 18 wherein a breathable liner covers said pad.

21. An orthopaedic support as defined in claim 18 wherein said pad includes a plurality of integrally-molded fingers extending from said pad to said shell.

22. An orthopaedic support as defined in claim 18 further comprising an overmold molded onto said shell.

23. An orthopaedic support for comfortably supporting the ankle comprising:

an ankle support formed for fitting about the lower leg;

having appropriate configuration to support the ankle;

said ankle support comprising a substantially rigid outer shell and a molded pad for cushioning;

said pad having a base layer and an inner construction including resilient material having cells therein for providing resilient support to the ankle;

said base layer and said cells being integrally molded together;

said pad being bonded to said outer shell; and

wherein said outer shell has a least one opening to allow air to escape from space in between said outer shell and said pad, said cells providing resilient support to the ankle from the structure of the cells and having a self supporting free standing construction even without being filled with air, liquid, or gel.

24. An orthopaedic support as defined in claim 23 wherein at least some of said air spaces are filled with foam for cushioning.

25. An orthopaedic support as defined in claim 23 wherein said pad includes a plurality of fingers extending from said pad toward said shell.

26. An orthopaedic support as defined in claim 23 further comprising an overmold molded onto said shell.

27. An orthopaedic support as defined in claim 26 wherein said pad is bonded to said overmold.

28. An orthopaedic support as defined in claim 23 wherein said pad includes a plurality of air holes to prevent formation of a bladder between said pad and said shell.

29. An orthopaedic support for comfortably supporting the ankle of a wearer, comprising:

an outer shell formed for fitting about the lower leg of the wearer;

a molded pad bonded to said shell;

said pad having a surface; and

said pad having a plurality of molded structures to provide differing levels of cushioning support for the wearer of the orthopaedic support at different areas of the pad, at least some of said structures having a different dimension than others of said structures;

wherein said pad further comprises a plurality of fingers extending from said pad to said outer shell;

some of said fingers having a different length than others of said fingers; and

said support having a malleolar region that is adapted to be placed against a malleolus of an ankle, said malleolar region having fingers of a greater length than fingers in other regions of said support.

30. An orthopaedic support comprising:

a substantially rigid shell formed to fit a limb of a user;

an injection molded pad for cushioning the shell to the limb;

said injection molded pad being integrally molded in a single molding step;

wherein said pad is a bladder having geometrically shaped cells to provide differing levels of localized cushioning and a plurality of channels molded between said cells to allow air and fluid to pass between said cells;

wherein at least one cell defines a closed space forming an internal bladder.

31. An orthopaedic support for comfortably supporting the ankle comprising:

an ankle support formed for fitting about the lower leg, adapted to support the ankle;

said ankle support comprising a substantially rigid outer shell and a molded pad for cushioning;

said pad having an inner surface and an outer layer, said inner surface including resilient material having cells therein for providing resilient support to the ankle; and

said pad being bonded to said outer shell;

wherein said outer shell has at least one opening to allow air to escape from space in between said outer shell and said pad, said cells providing resilient support to the ankle from the structure of the cells even without being filled with air;

wherein said orthopaedic support further comprises an overmold molded onto said shell;

wherein said pad is bonded to said overmold; and

wherein said overmold includes a ridge extending about the periphery of the overmold, said pad having an outer edge that engages with said ridge.

32. An orthopaedic support for comfortably supporting the ankle comprising:

an ankle support formed for fitting about the lower leg, adapted to support the ankle;

said ankle support comprising a substantially rigid outer shell and a molded pad for cushioning;

said pad having an inner surface and an outer layer, said inner surface including resilient material having cells therein for providing resilient support to the ankle; and

said pad being bonded to said outer shell;

wherein said outer shell has at least one opening to allow air to escape from space in between said outer shell and said pad, said cells providing resilient support to the ankle from the structure of the cells even without being filled with air; and

wherein said pad has a non-uniform skin thickness, said pad having at least one region having skin that is thicker than at least one other region, in order to improve the function of the support.

33. An orthopaedic support for comfortably supporting the ankle of a wearer, comprising:

an outer shell formed for fitting about the lower leg of the wearer;

a molded pad bonded to said shell;

said pad having a surface;

said pad having a plurality of molded substantially hollow structures to provide differing levels of cushioning support for the wearer of the orthopaedic support at different areas of the pad, at least some of said structures having a different dimension than others of said structures;

wherein said molded structures comprise walls, said walls providing cushioning support for the ankle even without inflating or otherwise filling said molded structures with air, liquid, or gel; and

said pad further comprising a plurality of fingers extending from said pad to said outer shell, said fingers being integrally molded with said pad; and

some of said fingers having a different length than others of said fingers.

34. An orthopaedic support comprising:

a substantially rigid shell formed to fit a limb of a user;

an injection molded pad for cushioning the shell to the limb;

said injection molded pad being integrally molded in a single molding step; and

wherein said shell further comprises a shell frame and a shell core which is removably mounted within said shell.

35. An orthopaedic support for comfortably supporting the ankle comprising:

an ankle support formed for fitting bout the lower leg, having appropriate configuration to support the ankle;

said ankle support comprising a substantially rigid outer shell and a molded pad for cushioning;

said pad having an inner surface and an outer layer;

said inner surface including resilient material having cells therein for providing resilient support to the ankle;

said pad being bonded to said outer shell;

wherein said outer shell has at least one opening to allow air to escape from space in between said outer shell and said pad, said cells providing resilient support to the ankle from the structure of the cells even without being filled with air, liquid, or gel;

wherein at least some of said air spaces are filled with foam for cushioning, and said foam surrounds but does not cover the malleolus.

36. An orthopaedic support for comfortably supporting the ankle comprising:

an ankle support formed for fitting about the lower leg, having appropriate configuration to support the ankle;

said ankle support comprising a substantially rigid outer shell and a molded pad for cushioning;

said pad having an inner surface and an outer layer;

said inner surface including resilient material having cells therein for providing resilient support to the ankle; and

said pad being bonded to said outer shell;

wherein said outer shell has at least one opening to allow air to escape from space in between said outer shell and said pad, said cells providing resilient support to the ankle from the structure of the cells even without being filled with air, liquid, or gel; and

an overmold molded onto said shell, with said pad being bonded to said overmold, and said overmold including a ridge extending about the periphery of the overmold, said pad having an outer edge that engages with said ridge.

37. An orthopaedic support for comfortably supporting the ankle comprising:

an ankle support formed for fitting about the lower leg, having appropriate configuration to support the ankle;

said ankle support comprising a substantially rigid outer shell and a molded pad for cushioning;

said pad having an inner surface and an outer layer;

said inner surface including resilient material having cells therein for providing resilient support to the ankle; and

said pad being bonded to said outer shell;

wherein said outer shell has at least one opening to allow air to escape from space in between said outer shell and said pad, said cells providing resilient support to the ankle from the structure of the cells even without being filled with air, liquid, or gel; and

said pad having a non-uniform skin thickness, said pad having at lest one region having skin that is thicker than at least one other region, in order to improve the function of the support.