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US 10,945,763 B2Granted
Orthopedic spring hinge system and methods thereof
AssigneeTexas Scottish Rite Hospital for Children
InventorsMikhail L. Samchukov, John D. Ross, Alexander M. Cherkashin
Life of this patent
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Abstract
A device, kit, and method for the treatment of anatomical joint dysfunctions, and more particularly, to a spring hinge comprising: a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unexpanded state; wherein the primary coil spring comprises surfaces that are configured to nest against each other to resist translational or shearing movement between adjoining spiral layers.
Claims27
A spring hinge comprising:
- a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unstressed state;
- wherein the primary coil spring comprises a first surface having a convex profile and an opposing second surface having a concave profile;
- wherein a portion of the first surface with the convex profile is configured to nest against an adjacent portion of the second surface with the concave profile when the primary coil spring is in the unstressed state;
- and
- wherein the nested convex and concave profiles resist a shearing movement between the first surface and the second surface.
2 more elements
A spring hinge comprising:
- a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unstressed state;
- and
- a secondary coil spring disposed within the central cavity of the primary coil spring;
- wherein the primary coil spring resists shearing movement of the spirals of the primary coil spring.
1 more element
A spring hinge comprising:
- a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unstressed state;
- and
- a secondary coil spring disposed within the central cavity of the primary coil spring;
- wherein the primary coil spring resists shearing movement of the spirals of the primary coil spring, wherein the spring hinge further comprises an end cap at each of the primary coil spring, wherein the end caps are configured to be secured to a ring fixator.
1 more element
A spring hinge comprising:
- a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unstressed state;
- and
- a secondary coil spring disposed within the central cavity of the primary coil spring;
- wherein the primary coil spring resists shearing movement of the spirals of the primary coil spring, wherein the spring hinge is secured to a ring fixator.
1 more element
A method for treating an anatomical joint dysfunction comprising:
- fixing a first and a second portion of a limb on opposite sides of an anatomical joint with a first and a second external fixator, such that the first and second external fixators are positioned on either side of the anatomical joint;
- connecting the first and second external fixators with an orthopedic spring hinge, wherein the orthopedic spring hinge comprises:
- a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unstressed state;
- wherein the primary coil spring comprises a first surface having a convex profile and a second surface having a concave profile;
- wherein a portion of the first surface with the convex profile is configured to nest against an adjacent portion of the second surface with the concave profile when the primary coil spring is in the unstressed state;
- and
- wherein the nested convex and concave profiles resist shearing movement between the first surface and the second surface;
- and
- wherein the orthopedic spring hinge provides for a pivotal movement about the anatomical joint while substantially or completely preventing unwanted translational or shearing movement, or sheering, about said anatomical joint.
6 more elements
A kit comprising:
- one or more spring hinges, each spring hinge comprising a primary coil spring having a helical structure with a central cavity, wherein the primary coil spring forms a plurality of spirals layered against one another when the primary coil spring is in an unstressed state;
- wherein the primary coil spring comprises a first surface having a convex profile and a second surface having a concave profile;
- wherein a portion of the first surface with the convex profile is configured to nest against an adjacent portion of the second surface with the concave profile when the primary coil spring is in the unstressed state;
- and
- wherein the nested convex and concave profiles resist a shearing movement between the first surface and the second surface;
- and one or more optional external fixators, screws, bolts, or end caps.
3 more elements
Dependencies are inferred from the claim text.