Ankle-foot orthosis

• US 7,077,818 B2
• Filed: 06/28/2005
• Issued: 07/18/2006
• Est. Priority Date: 11/07/2002
• Status: Active Grant

• Current Assignee: Ossur hf
• Original Assignee: Ossur hf
• Inventors: De Roy, Kim Peter Viviane, Olafsson, Orn, Ingimundarson, Arni Thor, Clausen, Arinbjorn Viggo
• Primary Examiner(s): Bennett, Henry
• Assistant Examiner(s): Ali, Shumaya B.
• Application Number:
  US11/167,087
• Publication Number:
  US 20050234378A1
• Time in Patent Office: 385 Days
• Field of Search: 602 27- 30, 602/23, 602 60- 62, 602 65- 66, 128/869, 128/882, 623 27- 29, 623/47, 2 2/2
• US Class Current: 602/27
• CPC Class Codes: A61F 5/0113 Drop-foot appliances

Abstract

An ankle-foot orthosis having a structural frame formed from at least one layer of fabric impregnated with a hardened structural resin. The frame includes at least one anterior support member that extends downwardly from an upper leg engaging portion to define an anterior ankle portion which extends to a medial portion connected to a foot plate.

Claims

1. An ankle-foot orthosis having medial and lateral sides comprising:

a structural frame formed from at least one layer of fabric impregnated with a hardened structural resin and including at least one anterior support member extending downwardly from an upper leg engaging portion to an anterior ankle portion, the anterior ankle portion extending to a medial portion located solely on the medial side of the orthosis; and

the medial portion is contoured to conform to the medial portion of the ankle.

2. The ankle-foot orthosis according to claim 1, further comprising a fastening device connected to the at least one anterior support member at the upper leg engaging portion.

3. The ankle-foot orthosis according to claim 1, further comprising a lateral leg support connected to the frame.

4. The ankle-foot orthosis according to claim 3, wherein the lateral leg support includes a strap arranged to form a loop.

5. The ankle-foot orthosis according to claim 1, wherein the at least one anterior support member, the ankle portion and the medial portion include layers of woven glass fibers reinforced with a plastic resin.

6. The ankle-foot orthosis according to claim 5, wherein at least one portion of the frame includes unidirectionally oriented carbon fibers reinforcing said layers of woven glass fibers.

7. The ankle-foot orthosis according to claim 1, further comprising a layer of polymeric coated textile coating at least a portion of a surface of the structural frame.

8. The ankle-foot orthosis according to claim 1, comprising two anterior support members, the anterior support members defining a clearance therebetween and joining at the anterior ankle portion.

9. The ankle-foot orthosis according to claim 8, wherein the two anterior support members join at the anterior ankle portion at about two-thirds the overall length of the structural frame from the upper leg engaging portion, said overall length of the structural frame defined as the distance from the upper leg engaging portion to a distal end of the medial portion.

10. The ankle-foot orthosis according to claim 9, wherein an upper leg engaging portion extends from the proximal end of each anterior support member, each upper leg engaging portion having a width greater than a width of the anterior support members and a curvilinear profile.

11. The ankle-foot orthosis according to claim 1, wherein the structural frame includes at least one reinforcement integrated into the frame near or at the medial portion, said reinforcement member comprising at least one layer of structural material or composite.

12. The ankle-foot orthosis according to claim 11, wherein the at least one reinforcement member extends over at least a portion of the periphery of a portion of the structural frame.

13. The ankle-foot orthosis according to claim 1, wherein the medial portion has a greater rigidity than the at least one anterior support member and the anterior ankle portion.

14. The ankle-foot orthosis according to claim 1, further comprising a lateral ankle support connected to the anterior ankle portion and extending towards the lateral side of the orthosis.

15. The ankle-foot orthosis according to claim 14, wherein the lateral ankle support is removably detachable from the anterior ankle portion.

16. The ankle-foot orthosis according to claim 14, wherein the lateral ankle support extends from the lateral side of the orthosis to an anterior side of the orthosis.

17. A monolithic ankle-foot orthosis having lateral and medial sides, and a plurality of continuous portions, comprising:

at least one anterior support portion;

at least one side portion including a medial portion contoured to conform to the medial portion of the ankle and positioned solely on the medial side of the orthosis; and

an anterior ankle portion having a proximal end continuously connected to the at least one anterior support member and a distal end continuously connected to the at least one side portion.

18. An ankle-foot orthosis for a human leg, comprising:

a structural frame including at least one anterior support member extending downwardly from an upper leg engaging portion to an anterior ankle portion, the anterior ankle portion extending to a medial portion contoured to conform to the medial portion of the ankle and located solely on a medial side of the orthosis;

wherein the anterior ankle portion and the medial portion are positioned to extend over a region of a human leg generally corresponding to the tibialis anterior.