Walker with open heel

• US 5,464,385 A
• Filed: 01/19/1994
• Issued: 11/07/1995
• Est. Priority Date: 06/27/1990
• Status: Expired due to Term

• Current Assignee: Ossur hf
• Original Assignee: Royce Medical Company (Ossur hf)
• Inventors: Grim, Tracy E.
• Primary Examiner(s): BAHR, JENNIFER DOYLE
• Application Number:
  US08/184,494
• Time in Patent Office: 657 Days
• Field of Search: 602/27, 602/23
• US Class Current: 602/27
• CPC Class Codes: A61F 5/0127 for the feet A61F5/0111 takes precedence

Abstract

A lightweight and removable leg walker is provided for stabilizing and rapidly healing lower leg injuries of a patient. The injured limb is disposed in a removable inner ankle bootie whose interior is partially covered with inflatable support bladders. While the foot is secured within the booties, it is then inserted into and additionally supported by a removable soft goods-type support. The soft goods-type support is securely attached to a walker frame by a combination of strap fasteners with VELCRO attachments. Inflatable bladders are located along the inner surfaces of two strut bases and raised heel strip. A tongue portion of the soft goods-type support also includes an inflatable bladder which provides additional support to the injured limb. These inflatable bladders encourage proper circulation from the lower leg to the heart. The walker frame includes a pair of strut bases and struts in order to prevent inversion and eversion of the ankle. The full length sole portion of the walker is constructed of two halves joined together. This construction is structurally superior to other walkers and braces insofar as it costs less and weighs less than other walkers currently manufactured. The heel portion of the sole also is constructed to form a cantilever spring, shock absorbing element.

Claims

1. A prefabricated orthopaedic leg walker assembly for treatment of ankle and foot injuries and fractures of the lower tibia and/or fibula comprising:

a full-length sole having an open heel portion at the rear thereof;

a pair of rigid, parallel strut members extending substantially vertically and upwardly from said sole to just below the knee;

a durable and resilient soft support adapted for extending around said lower leg and foot;

a plurality of fastening members for securing said soft support to said struts and said sole; and

a resilient, removable, lightweight and flexible ankle bootie which is received into said soft support, including bladder support means adapted for placement juxtaposed to the injured limb or joint and separated by a seam along the center of the heel for providing additional support to said ankle and foot.

2. A leg walker as defined in claim 1 wherein said bladder support means are mounted within said walker assembly for cushioning and stabilizing said limb or joint.

3. A leg walker as defined in claim 2 wherein said bladder support means comprises:

three layers of plastic welded to form one unit consisting of a first separate chamber and a second separate chamber;

said first chamber lies adjacent to the patient'"'"'s skin and receives hot or cold fluids for therapy;

said first chamber having an upper one-way entrance port;

said first chamber having a lower exit valve allowing for said fluids to drain out of said first chamber;

said exit valve having a drain clamp;

said second chamber being air inflatable;

means for supplying said fluids into said first chamber and for draining said fluids from said first chamber.

4. A leg walker as defined in claim 3 wherein said second chamber houses an elongated foam member for providing the patient with additional cushioning when said first chamber is not inflated.

5. A leg walker as defined in claim 1 wherein said bladder support means are constructed of an elastic non-porous material with a urethane laminate.

6. A leg walker as defined in claim 1 wherein said open-heel portion includes fastening means adapted for use around the heel.

7. A leg walker as defined in claim 1 wherein said sole includes a heel lip portion which extends around the heel area of the sole from one strut to the other, and said resilient support overlying said sole and extending to said heel lip portion.

8. A prefabricated orthopaedic leg walker assembly for treatment of ankle and foot injuries and fractures of the lower tibia and/or fibula comprising:

a full-length sole;

a pair of parallel and rigid strut base members extending vertically and upwardly from sides of said sole;

a pair of rigid, or semi-rigid parallel strut members extending substantially vertically and upwardly from and coupled to strut base members to just below the knee;

a durable and resilient soft support for extending around the injured limb or joint and around the lower leg and foot;

means for securing said soft support around said lower leg and foot;

a plurality of fastening members for securing said soft support to said struts and said sole;

said sole having an open heel portion at the rear thereof;

a counter strap member for restricting backward movement of the user'"'"'s heel beyond the rear of said sole at the open portion thereof; and

a removable, lightweight and flexible ankle bootie which is secured around the injured limb or joint and is received into said soft support for providing additional support to said ankle and foot, having a first elongated, vertical pouch juxtaposed to the outside surface of the left side of said ankle bootie, and a second elongated vertical pouch juxtaposed to the outside surface of the of the right side of said ankle bootie, and said ankle bootie having a first and second rigid splint member mounted with said first and second pouches.

9. A leg walker as defined in claim 8 wherein resilient bladder support means are affixed to the inside of said bootie, adapted for placement adjacent to the heel and ankle of the user.

10. A leg walker as defined in claim 9 wherein said rigid splint members are created by an activatable hardenable material.

11. A leg walker comprising:

a full-length sole, said sole having sole sides, a sole rear, and an open heel portion at said sole rear;

a pair of parallel strut base members extending up generally from said sole sides;

a pair of parallel strut members extending up from and connected to respective said strut base members, said strut members extending up to just below the knee of the leg of the user whose foot is supported at least in part by said sole;

support means for extending around at least one of the lower leg and the foot of the user;

securing means for securing said support means to at least one of said sole, said strut base members and said strut members; and

substantially horizontal, length-adjustable and flexible heel strap means for extending around the heel of the user and for thereby restricting backward movement of the user'"'"'s heel generally beyond said sole rear at said open heel portion.

12. A leg walker as defined in claim 11 wherein said securing means secures said support means directly to said sole.

13. A leg walker as defined in claim 11 wherein said securing means secures said support means directly to said strut members.

14. A leg walker as defined in claim 11 wherein said sole includes upper and lower sole plates and vertical webs separating said plates, to thereby form a plurality of substantially closed box structures.

15. A leg walker as defined in claim 11 wherein said support means includes a tongue member disposed to engage the top of the foot and shin of the user.

16. A leg walker as defined in claim 11 wherein said strut members comprise elongate rigid members.

17. A leg walker as defined in claim 11 wherein at least one of said strut base members includes a slot through which said heel strap means passes.

18. A leg walker-as defined in claim 11 wherein both said strut base members have integrally formed slots, each receiving therein a portion of said heel strap means.

19. A leg walker as defined in claim 11 wherein said securing means includes a forefoot strap secured to said sole.

20. A leg walker as defined in claim 11 wherein said securing means includes a dorsum instep strap secured to said strut base members.

21. A leg walker as defined in claim 20 wherein said dorsum instep strap when secured relative to the user pulls his foot down against said sole and back against said heel strap means.

22. A leg walker as defined in claim 11 wherein said heel strap means comprises a counter strap.

23. A leg walker as defined in claim 22 wherein said counter strap folds over onto itself in a length adjustable manner.

24. A leg walker as defined in claim 23 wherein said heel strap means includes hook-and-loop fastening means for releasably fastening said counter strap folded over onto itself at the desired length.

25. A leg walker as defined in claim 11 wherein said strut members are secured to said strut base members with metal pins and sonic welds.

26. A leg walker as defined in claim 11 wherein said sole is constructed of a glass fiber reinforced nylon material.

27. A leg walker as defined in claim 11 wherein said support means comprises a foam layer with a fabric outer covering which wraps around and stabilizes the user'"'"'s ankle and lower leg and hook-and-loop fastening means for securing said foam layer in the wrapped around position.

28. A leg walker as defined in claim 11 wherein said sole rear comprises a cantilever resilient shock absorbing heel structure.

29. A leg walker as defined in claim 28 wherein said heel structure includes spaced upper and lower plates and said lower plate has a flexible, shock absorbing rearmost portion.

30. A leg walker as defined in claim 11 wherein said heel strap means includes a counter strap having resilient, heel cushioning material positioned thereon to cushion the user'"'"'s heel.

31. A leg walker as defined in claim 11 wherein said securing means secures said support means to said strut members using hook-and-loop fasteners.

32. A leg walker as defined in claim 11 wherein said securing means includes longitudinally spaced straps which wrap around the user'"'"'s lower leg.

33. A leg walker as defined in claim 11 wherein said sole includes upper and lower sole plates and vertical, lateral webs separating said plates, forming a plurality of substantially closed box structures, said webs include a rearmost web, said rearmost web being spaced a distance forward of the rearmost edges of both said upper and lower sole plates, the rear portion of said upper plate thereby forming a rearwardly-cantilevered spring structure which acts as a shock absorber for the user'"'"'s heel.

34. A leg walker as defined in claim 33 further comprising a cushioning insert between said rear portion of said upper plate and the portion of said lower plate therebeneath and rearward of said rearmost web, and wherein said sole has a substantially continuous curvature.

35. A leg walker as defined in claim 33 wherein said webs include a forward web generally laterally in line with forwardmost edges of said strut base member, said rearmost web is generally laterally in line with the rearwardmost edges of said strut base members, and said upper sole plate bows upwardly between said forward web and said rearmost web.

36. A leg walker as defined in claim 11 wherein said heel strap means is connected to and supported at least in part by said strut base members.

37. A leg walker as defined in claim 11 wherein said heel strap means, when length adjusted to extend in position around the user'"'"'s heel, pulls rearwardly directly against said strut base members.

38. A leg walker comprising:

a full-length sole, said sole having sole sides, a sole rear, and an open heel portion at said sole rear;

a pair of parallel strut members extending up generally from said sole sides to above the ankle of the user whose foot is supported at least in part by said sole;

support means for extending around at least one of the lower leg and the foot of the user;

securing means for securing said support means to at least one of said sole and said strut members; and

a substantially horizontal, length-adjustable and flexible heel strap which engages the heel of the user and thereby restricts backward movement of the user'"'"'s heel generally beyond said sole rear at said open heel portion.

39. A leg walker as defined in claim 38 wherein said strut members extend up to just below the user'"'"'s knee.

40. A leg walker as defined in claim 38 further comprising slot means attached to at least one of said strut members for receiving therethrough said heel strap.

41. A leg walker as defined in claim 40 wherein said strut members each include a wide base portion and a narrower elongate member extending up from said wide base portion, said slot means being secured to said wide base portion and disposed generally rearwardly relative thereto.

42. A leg walker as defined in claim 40 wherein said slot means forms a generally vertical slot.

43. A leg walker as defined in claim 40 wherein said slot means forms a generally C-shaped slot.

44. A leg walker as defined in claim 38 wherein said support means comprises a soft flexible sleeve and said securing means comprises a compression strap.

45. A leg walker as defined in claim 44 wherein said compression strap extends around the user'"'"'s lower leg and around said strut members.

46. A leg walker as defined in claim 44 wherein said compression strap extends across the dorsum of the instep.

47. A leg walker as defined in claim 44 wherein said compression strap extends across the user'"'"'s forefoot.

48. A leg walker as defined in claim 38 further comprising resilient material on said heel strap to cushion the back of the user'"'"'s heel.

49. A leg walker as defined in claim 38 wherein said heel strap folds over onto itself and is adjustably attached to itself with hook-and-loop fasteners.

50. A leg walker as defined in claim 38 wherein said heel strap is connected to and supported at least in part by said strut members.

51. A leg walker as defined in claim 38 wherein said heel strap, when length adjusted in position engaging the user'"'"'s heel, pulls rearwardly directly against said strut members.

52. A leg walker comprising:

a full-length sole, said sole having sole sides, a sole rear, and an open heel portion at said sole rear;

generally rigid medial and lateral struts secured to and extending up from said sole and a distance above the ankle of the user whose foot is supported at least in part by said sole;

a soft, flexible support sleeve disposable around the user'"'"'s lower leg and foot;

a plurality of straps which hold said sleeve in place around the user'"'"'s lower leg and foot; and

a substantially horizontal, length-adjustable and flexible heel strap which generally engages the user'"'"'s heel and thereby restricts rearward movement of the user'"'"'s heel generally beyond said sole rear at said open heel portion.

53. A leg walker as defined in claim 52 wherein said struts have lower base portions and said heel strap extends between said lower base portions.

54. A leg walker as defined in claim 52 wherein said struts have means defining lower rearward openings through which said heel strap passes.

55. A leg walker as defined in claim 52 wherein said heel strap includes resilient heel cushioning material.

56. A leg walker as defined in claim 52 wherein said heel strap folds over onto itself in a length adjustable manner and includes hook-and-loop securing means for securing said heel strap in the desired folded over length.

57. A leg walker as defined in claim 52 wherein said heel strap is connected to and supported at least in part by said struts.

58. A leg walker as defined in claim 52 wherein said heel strap, when length adjusted in position generally engaging the user'"'"'s heel, pulls rearwardly directly against said struts.