Orthopedic device for treating drop foot and method for using the same

Patent metadata

Field	Value
Publication number	US-10744019-B2
Application number	US-201715674715-A
Country	US
Kind code	B2
Filing date	Aug 11, 2017
Priority date	Aug 11, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

An orthopedic device is arranged as a lightweight ankle-foot orthosis providing dynamic support for drop foot or related disorders requiring dorsiflexion. The orthopedic device includes a main support adapted to secure about a lower leg, a strap assembly having a first portion coupling to the main support, and a second portion arranged to be drawn therefrom, and an anchor for receiving and attaching to the second portion of the strap assembly. The location of the anchor along a foot component enables increased medial-lateral control, and the arrangement of the strap assembly permits dorsiflexion during swing phase of a user's gait.

First claim

The invention claimed is:

1. An orthopedic device, comprising:
a main support adapted to secure about a lower leg, wherein the main support defines a curved shape having a semi-rigid or rigid form, and arranged to resiliently maintain the curved shape between donning and doffing of the orthopedic device;
at least one strap extending from the main support and arranged to wrap about an ankle;
a strap assembly having a first portion coupling to the main support, and a second portion arranged to be drawn therefrom, the strap assembly including a main segment and at least one elastic segment attached to the main segment, the strap assembly located between the first and second portions, the main segment being less elastic than the at least one elastic segment and including the first portion;
an anchor for receiving and attaching to the second portion of the strap assembly;
an attachment component secured to the main support the first portion of the strap assembly coupling to the attachment component, the attachment component including a base and lateral wings extending laterally from the base over the main support and forming the curved shape of the main support, the base being centrally located on the main support at an apex of the curved shape thereof.

2. The orthopedic device of claim 1 , further comprising a foot component upon which the anchor is positioned.

3. The orthopedic device of claim 2 , wherein the foot component defines at least two apertures among which the anchor is selectively secured to the foot component.

4. The orthopedic device of claim 2 , wherein the foot component includes at least two straps extending from a main portion of the foot component, the at least two straps defining a clearance therebetween and over the main portion at which the anchor is secured.

5. The orthopedic device of claim 1 , wherein the strap assembly is releasably attached to the anchor and adjustable in length at the first portion relative to the main support.

6. The orthopedic device of claim 1 , wherein the attachment component comprises a lever arranged to bias against the base and to grasp the first portion of the strap assembly, the lever and the base defining a channel therebetween in which a wedge of the lever is urged against the strap assembly, the lever having a substantially logarithmic curve profile.

7. The orthopedic device of claim 6 , wherein an end of the first portion defines a tab extending from a first end of the attachment component, and the first portion extends through the lever and from a second end of the lever device towards the anchor.

8. The orthopedic device of claim 6 , wherein the base defines a sloped portion and the lever defines teeth proximate the channel.

9. The orthopedic device of claim 1 , wherein the main segment has a first end from which a tab extends and a second end at which a first end of the at least one elastic segment secures.

10. The orthopedic device of claim 1 , wherein a second end of the at least one elastic segment carries a coupling part securable to the anchor.

11. The orthopedic device of claim 10 , wherein the coupling part defines a keyhole adapted to receive a head of the anchor and engage a shaft extending from the head due to bias of the at least one elastic segment pulling the coupling part toward the leg support.

12. An orthopedic device, comprising:
a main support adapted to secure about a lower leg, wherein the main support defines a curved shape having a semi-rigid or rigid form, and arranged to resiliently maintain the curved shape between donning and doffing of the orthopedic device;
at least one strap extending from the main support and arranged to wrap around an ankle;
a strap assembly having a first portion coupling to the main support, and a second portion arranged to be drawn therefrom, the strap assembly including a main segment and at least one elastic segment attached to the main segment, the strap assembly located between the first and second portions, the main segment being less elastic than the at least one elastic segment and including the first portion;
a foot component adapted to secure about a foot;
an anchor for receiving and attaching to the second portion of the strap assembly and selectively positioned on a foot component, wherein the anchor is adjustable from a relative to a neutral strap assembly orientation to an offset orientation, such that the strap assembly extends at a non-parallel angle between the main support and the anchor relative to the neutral orientation;
an attachment component secured to the main support the first portion of the strap assembly coupling to the attachment component, the attachment component including a base and lateral wings extending laterally from the base over the main support and forming the curved shape of the main support, the base being centrally located on the main support at an apex of the curved shape thereof.

13. The orthopedic device of claim 12 , wherein the attachment component comprises a lever arranged to bias against the base and to grasp the first portion of the strap assembly, the lever and the base defining a channel therebetween in which a wedge of the lever is urged against the strap assembly, the lever having a substantially logarithmic curve profile.

14. The orthopedic device of claim 13 , wherein the base defines a sloped portion and the lever defines teeth proximate the channel.

Assignees

• Ossur Iceland Ehf

Inventors

• Omarsson Bjorn
• Kristinsdottir Hronn
• BOON Liza
• Jansen Marcel

Classifications

• A61F5/0127

  for the feet (A61F5/0111 takes precedence) · CPC title

• A61F5/0102

  specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations · CPC title

• A61F5/0113 Primary

  Drop-foot appliances · CPC title