Back to results
US 11,864,797 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
Estimating the term…
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.
Claims22
A spring hinge for an external fixation system, comprising:
- a coil spring having a helical structure with a central cavity extending along a central lengthwise axis, wherein the coil spring comprises a plurality of spirals having a non-circular cross-sectional shape in a plane in which the central lengthwise axis is disposed, the coil spring including a first end and a second end;
- a first end cap configured to couple to the first end of the coil spring and including a first portion configured to mount the first end cap to the external fixation system;
- and
- a second end cap configured to couple to the second end of the coil spring and including a second portion configured to mount the second end cap to the external fixation system;
- the coil spring comprising a first surface extending along a length of the coil spring and facing a first direction and an opposing second surface extending along the length of the coil spring and facing a second direction opposite the first direction, wherein a portion of the first surface is configured to abut a portion of the second surface when the coil spring is in an unexpanded resting state;
- wherein the first surface and the second surface are shaped to deter sheering movement between adjacent spirals of the plurality of spirals while permitting angular bending of the coil spring.
3 more elements
A spring hinge for an external fixation system, comprising:
- a coil spring having a helical structure with a central cavity, wherein the coil spring comprises a plurality of spirals having a non-circular cross-sectional shape, the coil spring including a first end and a second end, wherein each spiral has a conical configuration such that a first spiral of the plurality of spirals nests at least partially within a second spiral of the plurality of spirals;
- a first end cap configured to couple to the first end of the coil spring and including a first portion configured to mount the first end cap to the external fixation system;
- and
- a second end cap configured to couple to the second end of the coil spring and including a second portion configured to mount the second end cap to the external fixation system;
- the coil spring comprising a first surface extending along a length of the coil spring and facing a first direction and an opposing second surface extending along the length of the coil spring and facing a second direction opposite the first direction, wherein a portion of the first surface is configured to abut a portion of the second surface when the coil spring is in an unexpanded resting state;
- wherein the first surface and the second surface are shaped to deter sheering movement between adjacent spirals of the plurality of spirals while permitting angular bending of the coil spring.
3 more elements
A spring hinge for an external fixation system, comprising:
- a coil spring having a helical structure with a central cavity, wherein the coil spring comprises a plurality of spirals having a non-circular cross-sectional shape, the coil spring including a first end and a second end;
- a first end cap configured to couple to the first end of the coil spring and including a first portion configured to mount the first end cap to the external fixation system;
- and
- a second end cap configured to couple to the second end of the coil spring and including a second portion configured to mount the second end cap to the external fixation system;
- the coil spring comprising a first surface extending along a length of the coil spring and facing a first direction and an opposing second surface extending along the length of the coil spring and facing a second direction opposite the first direction, wherein a portion of the first surface is configured to abut a portion of the second surface when the coil spring is in an unexpanded resting state, wherein the first surface has a concave shape and the second surface has a concave shape.
2 more elements
An external fixation system, comprising:
- a coil spring having a helical structure with a central cavity, wherein the coil spring comprises a plurality of spirals;
- wherein the coil spring comprises a non-circular cross-sectional shape including a first surface extending along a length of the coil spring and facing a first direction and an opposing second surface extending along the length of the coil spring and facing a second direction opposite the first direction, the coil spring being configured such that the first surface contacts the second surface when the coil spring is in a resting state;
- wherein the first surface and the second surface are shaped to permit adjacent spirals of the plurality of spirals to nest and configured to deter sheering movement between adjacent spirals of the plurality of spirals while permitting angular bending of the coil spring.
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 coil spring having a helical structure with a central cavity, wherein the coil spring comprises a plurality of spirals having a non-circular cross-sectional shape, the coil spring including a first end and a second end;
- a first end cap coupled to the first end of the coil spring and including a first portion configured to mount the first end cap to the first external fixator;
- and
- a second end cap coupled to the second end of the coil spring and including a second portion configured to mount the second end cap to the second external fixator;
- the coil spring comprising a first surface extending along a length of the coil spring and facing a first direction and an opposing second surface extending along the length of the coil spring and facing a second direction opposite the first direction;
- wherein the first surface and the second surface are shaped to permit adjacent spirals of the plurality of spirals to nest and deter sheering movement between adjacent spirals of the plurality of spirals while permitting angular bending of the coil spring, wherein the external fixators are adjusted to treat the anatomical joint dysfunction.
5 more elements
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;
- and
- connecting the first and second external fixators with an orthopedic spring hinge, wherein the orthopedic spring hinge comprises:
- a coil spring having a helical structure with a central cavity extending along a central lengthwise axis, wherein the coil spring comprises a plurality of spirals having a non-circular cross-sectional shape in a plane in which the central lengthwise axis is disposed;
- wherein the coil spring comprises a non-circular cross-sectional shape including a first surface extending along a length of the coil spring and facing a first direction and an opposing second surface extending along the length of the coil spring and facing a second direction opposite the first direction, the coil spring being configured such that the first surface contacts the second surface when the coil spring is in a resting state;
- wherein the first surface and the second surface are configured to deter sheering movement between adjacent spirals of the plurality of spirals while permitting angular bending of the coil spring.
3 more elements
Dependencies are inferred from the claim text.