Flexible ankle brace

• US 5,445,602 A
• Filed: 07/29/1993
• Issued: 08/29/1995
• Est. Priority Date: 07/29/1993
• Status: Expired due to Term

• Current Assignee: Ossur hf
• Original Assignee: Royce Medical Company (Ossur hf)
• Inventors: Grim, Tracy E., Iglesias, Joseph M., Arnold, William K.
• Primary Examiner(s): DVORAK, LINDA C
• Application Number:
  US08/099,237
• Time in Patent Office: 761 Days
• Field of Search: 602/5-8, 602/13, 602/23, 602/27, 607/108, 607/111
• US Class Current: 602/27
• CPC Class Codes: A61F 5/0111 for the feet or ankles
• CPC Class Codes: A61F 5/012 inflatable

Abstract

An improved ankle brace may have two relatively rigid side supports, the outer edge portion of the lower area of the side supports, adjacent to the ankle being covered with a flexible or resilient material. The flexible resilient material may be permanently secured to the side supports by bonding, mechanical interlocking, or by any other suitable arrangements. Additional resilient flexible material may be placed on the interior surface of the side supports to improve the fit and comfort of the brace around the user'"'"'s lower leg. The rigid side supports may be of an open type with the resilient flexible material extending across the side supports and beyond the edges thereof.

Claims

1. An improved ankle brace for restraining the ankle against inversion and eversion while allowing for plantar flexion and dorsiflexion, comprising:

a pair of substantially rigid side supports having upper and lower ends, preformed of a relatively rigid material to conform to the shape of the lower leg, for fitting about the lower leg, said side supports having a configuration to encase both sides of the ankle, the lower end of the side supports having a reduced size as compared to the upper end of the side supports, allowing for insertion into the sides of the shoe;

said side supports having a flexible resilient material of a formed shape which is contoured to mechanically interfit with and extend beyond outer perimeters of said side supports to improve the fit of said side supports around the user'"'"'s lower leg and protect the wearer from injury or skin irritation from the edges of said supports.

2. An improved ankle brace as defined in claim 1 wherein the perimeter of the lower end of said side supports are, covered with said flexible resilient material.

3. An improved ankle brace as defined in claim 1 wherein each side support is mounted on top of said flexible resilient material, said flexible material having a slightly larger area than said side support and having substantially the same shape as said side supports.

4. An improved ankle brace for insertion into a shoe, for restraining the ankle against inversion and eversion, while allowing for plantar flexion and dorsiflexion, comprising:

at least one substantially rigid side support for fitting about at least a portion of the lower leg and having upper and lower portions, the side support oriented in a configuration to support the affected side of the ankle; and

flexible resilient material of a formed shape which is contoured to mechanically interfit with and substantially covering at least a portion of outer edges of said side support.

5. An improved ankle brace as defined in claim 4 in which said flexible resilient material is thermally bonded to said side supports.

6. An improved ankle brace as defined in claim 4 wherein said flexible resilient material covers at least the edges of the lower portion of said side supports.

7. An improved ankle brace as defined in claim 4 and further comprising:

additional padding means secured to the inside of said side supports to provide further comfort to the region surrounding the ankle.

8. An improved ankle brace as defined in claim 4 wherein the lower ends of said side supports can be inserted into the sides of a shoe with laces;

and

including fastening means located on the side supports to receive the laces of the shoe so that the laces can be tightened and tied to immobilize the ankle.

9. An improved ankle brace for insertion into a shoe, for restraining the ankle against inversion and eversion, while allowing for plantar flexion and dorsiflexion, comprising:

two substantially rigid side supports for fitting about the lower leg on both sides, and having upper and lower portions, the side supports being oriented in a configuration to support both sides of the ankle;

flexible resilient material integrally secured to and substantially covering at least a portion of outer edges of said side supports;

inflatable main bladders mounted on an inner surface of said side supports to provide supporting pressure, and for providing a cushion between the ankle and the side supports;

a preinflated resilient foot pump interconnected between said main bladders;

said inflatable main bladders and said pump being formed integrally with one another;

another shorter inflatable bladders mounted distally upon said main bladders; and

said foot pump having strategically placed weld lines serving to create channels through which fluid transfer can take place between the pump and the additional shorter inflatable bladders;

whereby walking or running activity increases the fluid pressure in said additional shorter inflatable bladders and provides additional support to the foot and ankle against inversion, and eversion while creating a pulsing action which lends to a massaging compression effect.

10. An improved ankle brace for insertion into a shoe, for restraining the ankle against inversion, and eversion while allowing for plantar flexion and dorsiflexion, comprising:

a pair of substantially rigid side supports having upper and lower ends, preformed of a relatively rigid material to conform to the shape of the lower leg, for fitting about the lower leg and with said side supports having a configuration to encase both sides of the ankle and with the lower end of the side supports for insertion into the sides of the shoe;

means for securing the side supports to firmly encase the ankle;

said securing means including a counter strap extending between the side supports at a lower position just above the heel near an intermediate point at the ankle, and fastening means located on the side supports substantially at an elevation at or immediately below said intermediate point and substantially at the level of the ankle joint to receive the laces of the shoe so that the laces can be tightened and tied to immobilize the ankle against inversion, eversion while permitting plantar flexion and dorsiflexion; and

a flexible cushioning material of a formed shape which is contoured to mechanically interfit with and surround edges of said side supports to improve the fit of each side support around the lower leg extremity, and protect the wearer from the edges of said side supports.

11. An improved ankle brace as defined in claim 10 wherein the securing means includes an adjustable bottom strap for extending between the side supports at a bottom position within the shoe.

12. An improved ankle brace as defined in claim 10 in which said flexible cushioning material is thermally bonded to said side supports.

13. An improved ankle brace as defined in claim 10 and further comprising:

one or more inflatable bladders mounted on and secured to an inner surface of said side supports to provide supporting pressure, and for providing a cushion between the ankle and the side supports, said bladders distributed with a certain amount of preinflation;

a preinflated resilient foot pump fluidically interconnected between said bladders;

said foot pump constructed of a resilient material which when compressed offers an increased pressurization of entrapped fluid within said bladders and having strategically placed fluid lines serving to create channels through which fluid transfer can take place between the pump and the inflatable bladders; and

said inflatable bladders each including a one-way inlet valve for supplying fluid to the bladders and a relief means for releasing fluid from said inflatable bladders;

whereby walking or running activity increases the fluid pressure in said inflatable bladders and provides additional support to the foot and ankle against inversion, and eversion while creating a pulsing action which lends to a massaging compression effect.

14. An improved ankle brace as defined in claim 10 wherein said ankle brace includes an additional bladder containing gel or fluid for providing hot or cold therapy.

15. An improved ankle brace for insertion into a shoe, for restraining the ankle against inversion, and eversion while allowing for plantar flexion and dorsiflexion, comprising:

at least one substantially rigid side support for fitting about the lower leg and having upper and lower portions, the side support having a configuration to support the affected side of the ankle;

said side support having a stiff or semi-rigid structural portion and resilient cushioning material of a formed shape which is contoured to interfit with said structural portion, said resilient cushioning material forming edges of at least a portion of said support.

16. An improved ankle brace as defined in claim 15 wherein said structural portion has a peripheral frame, and said resilient cushioning material extends across said frame and beyond the outer periphery thereof.

17. An ankle brace comprising:

a pair of side supports having upper and lower ends, to generally conform to the shape of the lower leg, for fitting about the lower leg, said side supports having a configuration to encase both sides of the ankle, allowing for insertion within the sides of a shoe;

said side supports having a combination of selectively different flexural properties, whereas the more flexible material is adjacent to the ankle and forms at least the outer parameter distal portion of the shell and the more rigid material is positioned more centrally for flexural strength to prevent eversion and inversion of the ankle;

said side supports both comprised of at least two thermoplastic materials varying in durometric stiffness including a softer material forming outer edges of at least part of the support and a more rigid material located more centrally for flexural strength to resist eversion and inversion of the ankle; and

said softer material being of a formed shape which is contoured to interfit with said rigid material to prevent separation of said two materials during the rigors of athletic endeavors.

18. The device as described in claim 17 in which said side supports are comprised of a rigid material and a molded contoured lower durometer material affixed to said rigid material.

19. The device as described in claim 17 in which said side supports consist of a rigid material, said rigid material having upper and lower ends shaped to generally conform to the lower leg and a molded, contoured lower durometer material affixed to said rigid material to provide a unit which resists inversion and eversion of the ankle.

20. The device as described in claim 17 in which said rigid material is affixed to a lower durometer material, said lower durometer material determining the shape of the shell and being preformed with recesses to mate with the shape of the rigid material to form a unitary support which resists inversion and eversion.

21. An improved ankle brace for insertion into a shoe, for restraining the ankle against inversion and eversion, while allowing for plantar flexion and dorsiflexion, comprising:

at least one substantially rigid side support for fitting about at least a portion of the lower leg and having upper and lower portions, the side support oriented in a configuration to support the affected side of the ankle;

flexible resilient material contoured to mechanically interfit with and substantially covering at least a portion of outer edges of said side support;

an inflatable main bladder mounted on an inner surface of said side support;

an additional shorter bladder mounted on said main bladder; and

a foot pump operationally connected to said shorter bladder to increase a pressurization of said shorter bladder in response to a walking or running activity.