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US 2010/0249837 A1Published application
Semi-constrained anchoring system
AssigneeKspine, Inc.
InventorsSteven J. Seme, Thomas J. Gisel
Life of this patent
Estimating the term…
Abstract
Systems, devices, and associated methods for correcting spinal column deformities that help minimize a number of attachment anchors utilized for correction, facilitate use of straight or contoured rods, and/or help promote a more natural, physiologic motion of the spinal column.
Claims20
A system for correcting a spinal deformity, the system comprising:
- a rod adapted to extend along a spine of a patient;
- a first rod anchor adapted to be fixed to a first vertebra of the spine, the first rod anchor receiving the rod such that the rod is secured against substantial lateral translation relative to the first rod anchor and the rod is allowed to slide axially relative to the first rod anchor through a first pivot point and to change in at least two of pitch, yaw, and roll about the first pivot point;
- a second rod anchor adapted to be fixed to a second vertebra, the second rod anchor receiving the rod such that the rod is secured against substantial lateral translation relative to the second rod anchor and is allowed to change in at least pitch and yaw about a second pivot point;
- a first vertebral anchor adapted to be fixed to a third vertebra;
- a first adjustment mechanism;
- and
- a first force directing member coupled to the first vertebral anchor and the rod, the first force directing member defining an effective length between the first vertebral anchor and the rod, the first adjustment mechanism being adapted to modify the effective length of the force directing member.
4 more elements
A method of correcting a spinal deformity, the method comprising:
- securing a first rod anchor to a first vertebra of the spine and a second rod anchor to a second vertebra of the spine;
- slidably receiving a rod through a first pivot point in the first rod anchor and receiving the rod through a second pivot point in the second rod anchor, such that the rod is free to rotate and change in pitch and yaw about the first pivot point;
- securing a first vertebral anchor to a third vertebra;
- coupling a first force directing member to the first vertebral anchor and the rod;
- connecting the first force directing member to the first adjustment mechanism;
- and
- adjusting an effective length of the first force directing member with the first adjustment mechanism to help correct a spinal deformity.
4 more elements
A system for correcting a spinal defect, the system comprising:
- means for securing a rod to a first vertebra of a spine such that the rod is able to slide axially through a first pivot point defined by the means for securing the rod to the first vertebra and to change in pitch, yaw, and roll about the first pivot point;
- means for securing the rod to a second vertebra of a spine such that the rod is able to change in at least pitch and yaw about a second pivot point defined by the means for securing the rod to the second vertebra;
- means for anchoring to a third vertebra;
- a connector coupled to the rod and the means for anchoring to the third vertebra;
- and
- means for adjusting an effective length of the connector.
3 more elements
A system for correcting a spinal deformity located between a first vertebra and a second vertebra of a person's spine, the system comprising:
- a substantially rigid rod adapted to extend across the spinal deformity;
- a first rod anchor adapted to be fixed to the first vertebra and to receive a first end of the rod such that the rod is allowed to translate axially relative to the first rod anchor;
- a second rod anchor adapted to be fixed to the second vertebra and to receive a second end of the rod;
- and
- a first force directing member coupled between the rod and the spinal deformity;
- wherein the first and second rod anchors are adapted to resist lateral translation of the rod relative to the spine and to allow a longitudinal axis of the rod to change in at least a pitch and a yaw.
3 more elements
Dependencies are inferred from the claim text.