Medical device and method to correct deformity
AssigneeK2M, Inc.
InventorsDan Sachs, Corbett Stone
Life of this patent
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Abstract
A system for correcting a spinal deformity includes an implant fixed to one side of a vertebra and a rod extending along an axis of the spine on a second side of the vertebra. An adjustment member, which may include a reel, is coupled to the rod. A force directing member, such as a cable, extends between the rod and the adjustment member. The force directing member is retractable toward and extendible from the adjustment member. A method of correcting spinal deformity includes providing an implant, a rod, an adjustment member coupled to the rod, and a force directing member extending between the rod and the adjustment member. The adjustment member can be retractable toward and extendible from the adjustment member.
Claims37
A system for correcting a deformity of a spine, the system comprising:
- at least one implant configured to be fixed to a first side of a vertebra;
- a rod adapted to extend generally along an axis parallel to an axis of the spine and on a second side of the vertebra;
- at least one adjustment member coupled to the rod;
- and
- at least one force directing member adapted to extend between the at least one implant and the at least one adjustment member, the at least one force directing member being retractable toward and extendible from the at least one adjustment member, wherein retraction and extension of the at least one force directing member changes a length of the at least one force directing member between the at least one adjustment member and the at least one implant, wherein the at least one adjustment member is configured to noninvasively retract and extend the at least one force directing member.
A system for correcting a spinal deformity, the system comprising:
- means for establishing a desired orientation of vertebrae;
- means for applying force to an individual vertebra;
- means for directing force to the force applying means, the force directing means extending between the force applying means and the orientation establishing means;
- and
- means for noninvasively retracting the force directing means toward the orientation establishing means, the retracting means reducing a length of the force directing means between the force applying means and the retracting means.
A system for correcting a spinal deformity, comprising:
- an elongate rod defining a longitudinal axis;
- a first adjustment member directly coupled to the elongate rod;
- a second adjustment member directly coupled to the elongate rod, the first and second adjustment members spaced from one another along the longitudinal axis of the elongate rod;
- a first flexible force directing member attached to the first adjustment member and adapted to be noninvasively drawn toward the elongate rod by the first adjustment member;
- a second flexible force directing member attached to the second adjustment member and adapted to be drawn toward the elongate rod by the second adjustment member;
- a first implant connected to the first flexible force directing member and configured to connect to a first vertebra of a spine allowing the first force directing member to draw the first vertebra towards the elongate rod;
- and
- a second implant connected to the second flexible force directing member and configured to connect to a second vertebra of a spine allowing the second force directing member to draw the second vertebra towards the elongate rod.
A method of correcting a deformity of a spine, the method comprising:
- affixing an implant to a first side of a vertebra;
- positioning a rod on a second side of the vertebra so that it extends generally parallel to an axis of the spine;
- providing an adjustment member positioned along the rod;
- positioning a force directing member so that it extends between the adjustment member and the implant;
- and
- noninvasively applying a force to the force directing member with the adjustment member by reducing a length of the force directing member between the adjustment member and the implant, thereby moving the vertebra toward the rod.
Dependencies are inferred from the claim text.