Ankle positioning splint

• US 5,605,535 A
• Filed: 05/01/1995
• Issued: 02/25/1997
• Est. Priority Date: 05/01/1995
• Status: Expired due to Fees

• Current Assignee: Jeffrey A. Lepage
• Original Assignee: Jeffrey A. Lepage
• Inventors: Lepage, Jeffrey A.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): LEWIS, KIM M
• Application Number:
  US08/432,085
• Time in Patent Office: 666 Days
• Field of Search: 602/23, 602/27, 602/65, 602/5, 602/16, 128/882
• US Class Current: 602/27
• CPC Class Codes: A61F 5/0585 for the legs toe correcting devices A61F5/019

Abstract

An ankle positioning splint. The splint includes a load-bearing foot brace having a bottom plate for supporting a foot in a supported position against the plate. A pair of splint arms extend upwardly from the plate and along opposing sides of the lower leg, respectively. A heel strap and an anterior ankle strap are secured to the foot brace means at opposing positions. The anterior ankle strap presses against the anterior ankle, and the heel strap presses against a specific rear portion of the heel posterior to the ankle and adjacent the calcaneus. The heel strap conforms to the natural curvature of the angled rear portion of the heel so as to apply a specific downward force into the calcaneus, and preferably does not circumscribe the foot or the leg. A calf strap is secured to the splint arms for pressing against the angled upper section of the calf muscle. The calf strap preferably does not circumscribe the leg, and is counteracted by a front strap which presses against the front of the lower leg just below the knee. The straps and all surfaces of the brace that contact the foot and leg are heavily padded, and an optional middle strap can be disposed on the splint arms to circumscribe the leg at a location between the calf strap and the heel strap for additional support.

Claims

1. An ankle positioning splint for maintaining a patient'"'"'s foot in a desired position relative to a corresponding lower leg of the patient to thereby position an ankle of the foot, wherein the foot includes a heel, said ankle positioning splint comprising:

load-bearing foot brace means including a bottom plate for supporting the patient'"'"'s foot in a supported position and leg supporting means extending upwardly from the plate and along opposing sides of the lower leg, respectively, when the foot is supported in the supported position, said leg supporting means further including an upper rear opening;

foot holding means disposed on the foot brace means for pressing against the patient'"'"'s foot anterior to the ankle; and

calf support means secured to opposing portions of the leg supporting means and extending across the upper rear opening thereof for pressing against a posterior portion of the lower leg residing between a knee joint and a larger portion of a calf section of the lower leg, said posterior portion residing forwardly of the larger portion of the calf such that said calf section extends rearwardly to a location beneath and rearward of the portion of the calf support means which is pressing against said posterior portion of the lower leg, to thereby aid in preventing substantial migration of the heel away from the bottom plate of the foot brace means.

2. An ankle positioning splint as defined in claim 1, wherein the foot includes an anterior ankle portion and wherein the heel includes a lower posterior knob extremity, wherein the leg supporting means further includes a lower rear opening, said ankle positioning splint further comprising:

heel support means secured to the foot brace means and extending across the lower rear opening without circumscribing any portion of the foot and without circumscribing any portion of the leg for pressing against a posterior portion of the patient'"'"'s foot which resides forwardly of the lower posterior knob extremity of the heel such that said lower posterior knob extremity extends rearwardly to a location beneath and rearward of the portion of the heel support means which is pressing against said posterior portion of the foot when said foot is supported in the supported position to thereby aid in preventing substantial migration of the heel away from the bottom plate of the foot brace means.

3. The ankle positioning splint as defined in claim 2, wherein the leg supporting means includes adjustment means for adjusting the length of the leg support means to enable the ankle positioning splint to be sized with respect to different-sized patients.

4. The ankle positioning splint as defined in claim 2, wherein the leg supporting means is selectively pivotally moveable relative to the bottom plate of the foot brace means, the ankle positioning splint further comprising:

locking means for selectively locking the leg supporting means at desired pivotally displaced positions relative to the bottom plate of the foot brace means.

5. The ankle positioning splint as defined in claim 2, wherein the foot brace means includes exterior portions, said ankle positioning splint further comprising:

soft energy-absorbing material disposed upon exterior portions of the foot brace means to soften any contact said foot brace means might have with other objects.

6. The ankle positioning splint as defined in claim 2, wherein the leg support means further includes a lower front opening, and wherein the foot holding means comprises ankle strap means secured to the foot brace means and extending across the lower front opening.

7. The ankle position splint as defined in claim 2, wherein at least a portion of the heel support means resides above the heel and closer to an axis of the lower leg than said heel to thereby block migration of the heel away from the bottom plate of the foot brace means when the foot resides in the supported position.

8. The ankle positioning splint as defined in claim 2, wherein the heel support means is secured to opposing portions of the foot brace means so as to bisect and extend across the rear opening at a location adjacent to the patient'"'"'s foot when the foot is supported in the supported position such that said heel support means divides said rear opening into upper and lower openings.

9. The ankle positioning splint as defined in claim 2, wherein the foot holding means, the foot brace means, and the portion of the heel support means which presses against the posterior portion of the foot when the foot is supported in the supported position cooperatively define an interior circumferential distance which is less than any circumferential distance of the foot that traverses both a rear-most portion of the lower posterior knob extremity and the anterior ankle portion of the foot.

10. The ankle positioning splint as defined in claim 2 wherein the heel support means includes means for pressing against the heel and exerting a force passing through the heel into a calcaneus of the foot, at least one non-frictional component of said force being conveyed toward the bottom plate of the foot brace means in a substantially parallel alignment with respect to the lower leg.

11. The ankle positioning splint as defined in claim 2, wherein the heel support means is configured and arranged to seat firmly against a posterior extremity of the heel which forms a first angle relative to the lower leg such that a portion of the heel strap means contacting said posterior extremity resides common to said first angle.

12. The foot positioning splint as defined in claim 2, wherein the heel support means comprises a heel strap having opposing ends secured to the opposing portions of the foot brace means, said heel strap being configured and arranged to seat against the posterior extremity such that the ends extend in a direction substantially perpendicular to said posterior extremity.

13. The ankle positioning splint as defined in claim 2, wherein the leg supporting means further includes an upper rear opening, said positioning splint further comprising:

calf support means secured to opposing portions of the leg supporting means and extending across the upper rear opening thereof for pressing against a posterior portion of the lower leg residing between a knee joint and a larger portion of a calf section of the lower leg, to thereby aid in preventing substantial migration of the heel away from the bottom plate of the foot brace means.

14. The ankle positioning splint as defined in claim 13, wherein the calf support means is configured for pressing against said posterior portion of the lower leg without circumscribing the lower leg.

15. The ankle positioning splint as defined in claim 13, wherein the calf support means includes means for exerting a force against said posterior portion of the lower leg, said force including at least one non-frictional component which is conveyed toward the bottom plate of the foot brace means in a substantially parallel alignment with respect to the lower leg.

16. The ankle positioning splint as defined in claim 13, further comprising:

middle support means disposed on the leg supporting means for circumscribing the lower leg, said middle support means residing between the calf support means and the heel support means.

17. The ankle positioning splint as defined in claim 13, wherein the calf support means is configured and arranged to seat firmly against a posterior leg extremity of the lower leg residing between the knee joint of the larger portion of the calf section and which forms a second angle relative to the lower leg, such that a portion of the calf support means contacting said posterior leg extremity resides common to said second angle.

18. The ankle positioning splint as defined in claim 17, wherein the leg supporting means further includes an upper front opening, said positioning splint further comprising:

upper leg support means secured to opposing portions of the leg supporting means and extending across the upper front opening thereof at a location substantially opposite the calf support means.

19. The ankle positioning splint as defined in claim 13, wherein the calf support means comprises a calf strap having opposing ends secured to the opposing portions of the leg supporting means, said calf strap being configured and arranged to seat against a posterior leg extremity of the lower leg residing between the knee joint and the larger portion of the calf section such that the ends extend in a direction substantially perpendicular to said posterior leg extremity.

20. An ankle positioning splint as defined in claim 1, wherein the foot includes a bottom and an anterior ankle portion, said heel including a posterior extremity which forms a first acute angle relative to the bottom of the foot, said ankle positioning splint further comprising:

heel support means attached to the foot brace means and being disposed at an acute angle with respect to the bottom plate of the foot brace means for seating firmly against a posterior portion of the foot when the foot is supported in the supported position such that a portion of the heel support means contacting said posterior portion is maintained to reside substantially common to said first acute angle, to thereby prevent substantial migration of the heel away from the bottom plate of the foot brace means.

21. The ankle positioning splint as defined in claim 20, wherein the heel support means is configured for applying a force directly to the posterior extremity of the patient'"'"'s heel, said force including at least one non-frictional component which is conveyed toward the bottom plate of the foot brace means in a substantially parallel orientation with respect to the lower leg.

22. The ankle positioning splint as defined in claim 20, wherein the heel support means comprises a heel strap having opposing ends secured to the opposing portions of the foot brace means, said heel strap being configured and arranged to seat against the posterior extremity such that the ends extend in a direction substantially perpendicular to said posterior extremity.

23. The ankle positioning splint as defined in claim 20, further comprising:

calf support means secured to opposing portions of the leg supporting means for pressing against a posterior portion of the lower leg residing between a knee joint and a larger portion of a calf section of the lower leg, to thereby aid in preventing substantial migration of the heel away from the bottom plate of the foot brace means.

24. The ankle positioning splint as defined in claim 20, wherein the foot holding means, the foot brace means, and the portion of the heel support means which presses against the posterior portion of the foot when the foot is supported in the supported position cooperatively define an interior circumferential distance which is less than any circumferential distance of the foot that traverses both a rear-most portion of the lower posterior knob extremity and the anterior ankle portion of the foot.

25. An ankle positioning splint as defined in claim 1, wherein at least a portion of the calf support means resides above the larger portion of the calf section and closer to an axis of the lower leg than said larger portion to thereby block migration of the lower leg, and thus the heel, away from the bottom plate of the foot brace means when the foot resides in the supported position.

26. The ankle positioning splint as defined in claim 1, wherein the calf support means is nonresilient.

27. An ankle positioning splint for maintaining a patient'"'"'s foot in a desired position relative to a corresponding lower leg of the patient to thereby position an ankle of the foot, said ankle positioning splint comprising:

load-bearing foot brace means including a bottom plate for supporting the patient'"'"'s foot in a supported position and leg supporting means extending upwardly from the plate and along opposing sides of the lower leg, respectively, when the foot is supported in the supported position; and

foot holding means disposed on the foot brace means for pressing against the patient'"'"'s foot anterior to the ankle;

wherein the foot brace means includes a substantially rigid rear calf holder disposed in a substantially fixed orientation with respect to the bottom plate and defining a calf receiving cavity for receiving a larger portion of a calf section of the lower leg thereinto when the foot resides in the supported position, said rear calf holder including an upper portion having interior surface means for (i) at least partially facing the bottom plate such that said interior surface means and said bottom plate form an acute angle therebetween, and for (ii) residing against and above the larger portion of the calf section to thereby at least partially encapsulate said larger portion of the calf and block migration of the lower leg, and thus the heel, away from the bottom plate of the foot brace means when said larger portion of the calf section resides in the calf receiving cavity.

28. An ankle positioning splint as defined in claim 27, wherein the foot includes a heel having a lower posterior knob extremity,

wherein the foot brace means includes a rear heel holder extending upwardly from the bottom plate and cooperatively defining a heel receiving cavity with said bottom plate for receiving the heel thereinto when the foot resides in the supported position, said rear heel holder including an upper portion which forms an acute angle with the bottom plate to thereby at least partially encapsulate the heel and block migration of the heel away from the bottom plate of the foot brace means when the lower posterior knob extremity of the heel resides in the heel receiving cavity.

29. The ankle positioning splint as defined in claim 28, wherein the foot brace means includes a rear calf holder defining a calf receiving cavity for receiving a larger portion of a calf section of the lower leg thereinto when the foot resides in the supported position, said rear calf holder including an upper portion which forms an acute angle with the bottom plate and resides against and above the larger portion of the calf section and closer to an axis of the lower leg than said larger portion of the calf section to thereby at least partially encapsulate said larger portion of the calf and block migration of the lower leg, and thus the heel, away from the bottom plate of the foot brace means when said larger portion of the calf section resides in the calf receiving cavity.

30. The ankle positioning splint as defined in claim 28, wherein the upper portion of the rear heel holder resides against a posterior portion of the patient'"'"'s foot at a location forwardly of the lower posterior knob extremity such that said lower posterior knob extremity extends rearwardly to a location beneath and rearward of the portion of said upper portion which resides against said posterior portion of the foot when the heel resides in the heel receiving cavity.

31. The ankle positioning splint as defined in claim 28, wherein the foot holding means, the foot brace means, and the upper portion of the rear heel holder cooperatively define an interior circumferential distance which is less than any circumferential distance of the foot that traverses both a rear-most portion of the lower posterior knob extremity and the anterior ankle portion of the foot.

32. The ankle positioning splint as defined in claim 27, wherein the upper portion of the rear calf holder is configured to reside against a posterior portion of the lower leg residing between a knee joint and the larger portion of a calf section of the lower leg, said posterior portion residing forwardly of the larger portion of the calf such that said larger portion of the calf extends rearwardly to a location beneath and rearward of the portion of said upper portion of the rear calf holder which resides against said posterior portion of the lower leg when the patient'"'"'s foot is supported in the supported position.