Orthopedic device having a dynamic control system

Patent metadata

Field	Value
Publication number	US-2016120683-A1
Application number	US-201514926098-A
Country	US
Kind code	A1
Filing date	Oct 29, 2015
Priority date	Oct 31, 2014
Publication date	May 5, 2016
Grant date	—

Abstract

An orthopedic device has first and second struts connected to one another by a hinge system, and includes a dynamic control system and a counterforce system. The dynamic control system includes first and second dynamic components arranged on a first side of the orthopedic device to exert first and second dynamic forces according to a flexion angle of the hinge system. A counterforce system is located on a second side of the orthopedic device to counteract the first and second dynamic forces with at least one counterforce.

First claim

1 . An orthopedic device having first and second struts connected to one another by a hinge system, comprising:
a dynamic control system including:
a first dynamic component arranged on a first side of the orthopedic device relative to an anterior-posterior plane, and superior to the hinge system, the first dynamic component connected to at least one of the first and second struts and arranged to exert a first dynamic force directed toward at least one of the first and second struts according to a flexion angle of the hinge system; and
a second dynamic component arranged on a first side of the orthopedic device relative to an anterior-posterior plane, and inferior to the hinge system, the second dynamic component connected to at least one of the first and second struts and arranged to exert a second dynamic force directed toward at least one of the first and second struts according to a flexion angle of the hinge system;
a counterforce system located on a second side of the orthopedic device relative to an anterior-posterior plane and adapted to counteract the first and second dynamic forces with at least one counterforce.

2 . The orthopedic device of claim 1 , wherein:
the first dynamic component includes a first cable and a first adjustment mechanism and arranged to incrementally wind or release the first cable in a first direction relative to the first strut; the second dynamic component including a second cable and a second adjustment mechanism arranged to incrementally wind or release the second cable in a second direction relative to the second strut; wherein the first and second cables are independently adjustable relative to one another.

3 . The orthopedic device of claim 2 , wherein each of the first and second adjustment mechanisms include a shell arranged for applying the first and second dynamic forces in the first and second directions, respectively.

4 . The orthopedic device of claim 2 , wherein the first and second directions are in a same direction when the orthopedic device is in an extension configuration, and extend in a different direction when the orthopedic device is in flexion configuration beyond extension.

5 . The orthopedic device of claim 2 , further comprising a first guide on the first strut directing the first cable from the first adjustment mechanism past and over the hinge system to a second guide located on the second strut.

6 . The orthopedic device of claim 5 , wherein the first cable slidably extends through the first guide and terminates at the second guide such that a first end of the first cable is secured to the first adjustment mechanism and a second end of the first cable is secured to the second guide.

7 . The orthopedic device of claim 2 , wherein the first cable freely extends over the hinge system without interference with movement of the first cable as the hinge system articulates.

8 . The orthopedic device of claim 5 , wherein the second cable slidably extends through the second guide such that a first end of the second cable is secured to the second adjustment mechanism and a second end of the second cable is secured to the hinge system.

9 . The orthopedic device of claim 8 , wherein the second cable extends obliquely from the second guide relative to the first cable.

10 . The orthopedic device of claim 9 , wherein the first cable generally extends over a center of the hinge system when the orthopedic device is in extension and the second cable extends into the hinge system at a corner inlet.

11 . The orthopedic device of claim 5 , wherein the second guide includes a first arcuate channel including an inlet through which the first cable extends and a termination point within the second guide at which a second end of the first cable terminates, and a second channel defining an arcuate shape and having a corner inlet and a corner outlet through which the second cable slidably extends.

12 . The orthopedic device of claim 5 , wherein the second guide defines a tapered recess at an inlet into which the first cable extends to accommodate a movement profile of the first cable as the hinge system articulates.

13 . The orthopedic device of claim 12 , wherein the second guide defines a second channel defining an arcuate shape and having a corner inlet and outlet through which the second cable slidably extends, the corner outlet is formed proximate and outside the movement profile.

14 . The orthopedic device of claim 12 , wherein the tapered recess defines a V-shaped profile.

15 . The orthopedic device of claim 2 , wherein the first and second adjustment mechanisms are located on a posterior side of the orthopedic device, such that the first adjustment mechanism is superior the hinge system, and that the second adjustment mechanism is inferior of the hinge system.

16 . The orthopedic device of claim 1 , wherein the counterforce system includes a counterforce strap device coupled to the first strut and arranged to dynamically adjust in tension according articulation of the hinge system.

17 . The orthopedic device of claim 16 , wherein the counterforce strap device includes a first strap located on a second side of the orthopedic device relative to an anterior-posterior plane, the counterforce strap device provides a dynamic counterforce to the second dynamic force.

18 . The orthopedic device of claim 16 , wherein the counterforce strap device further includes a third cable connecting the strap to the hinge system and a third guide secured to the first strut such that the third guide directs the third cable from the first strap to the hinge system.

19 . An orthopedic device having first and second struts connected to one another by a hinge system, comprising:
a dynamic control system including:
a first dynamic component arranged on a first side of the orthopedic device relative to an anterior-posterior plane, and superior to the hinge system, the first dynamic component connected to at least one of the first and second struts and arranged to exert a first dynamic force directed toward at least one of the first and second struts according to a flexion angle of the hinge system; and
a second dynamic component arranged on a first side of the orthopedic device relative to an anterior-posterior plane, and inferior to the hinge system, the second dynamic component connected to at least one of the first and second struts and arranged to exert a second dynamic force, directed toward at least one of the first and second struts according to a flexion angle of the hinge system;
a counterforce system located on a second side of the orthopedic device relative to an anterior-posterior plane and adapted to counteract the first and second dynamic forces, the counterforce system including a first counterforce strap device coupled to the second strut and inferior to the hinge system for providing a first counteracting force to the first dynamic force, and a second counterforce strap device coupled to the first strut and superior to the hinge system for providing a second counteracting force to the second dynamic force.

20 . A method for using an orthopedic device having first and second struts connected to one another by a hinge system, the method comprising:
arranging a first dynamic component on a first side of the orthopedic device relative to an anterior-posterior plane, and superior to the hinge system, the first dynamic component connected to at least one of the first and second struts and exerting a first dynamic force directed toward at least one of the first and secon

Assignees

• Ossur Hf

Inventors

• Romo Harry Duane
• Webster Christopher Callicott
• Olivo Jared

Classifications

• A61F2005/0165

  with limits of movement · CPC title

• A61F5/0123 Primary

  for the knees (A61F5/0106 takes precedence) · CPC title

• A61F2005/0144

  Multibar · CPC title

• A61F2005/0179

  with spring means · CPC title

• A61F2005/0134

  with two orthogonal pivots · CPC title