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US 9,427,261 B2Granted
Spinal correction system and method
AssigneeWarsaw Orthopedic, Inc.
InventorsNoriaki Kawakami, Geoffrey Askin, Haemish Crawford, Roy Lim, Adam Glaser
Life of this patent
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Abstract
A spinal correction apparatus comprises a body. A ratchet is disposed with the body. A longitudinal element is connected to the ratchet. A force is applied to at least a portion of the apparatus that causes dynamic incremental movement of the longitudinal element relative to the body in at least one direction. Methods of use are disclosed.
Claims13
A spinal correction apparatus comprising:
- a body;
- a ratchet disposed within the body;
- a longitudinal element connected to the ratchet;
- an actuator disposed with the body and connected to the ratchet, the actuator being rotatable relative to the body and the ratchet to facilitate movement of the first longitudinal element relative to the body and the ratchet;
- wherein the ratchet comprises a rack formed on an inner surface of the body and a carriage connected with the first longitudinal element, the ratchet further comprising a pawl engageable with the carriage and the rack to facilitate axial movement of the longitudinal element.
2 more elements
A spinal correction apparatus comprising:
- an outer sleeve extending between a first end and a second end, the outer sleeve including an inner surface that defines an elongated cavity;
- a ratchet disposed with the cavity of the outer sleeve, the ratchet comprising an inner sleeve including a first rack and a second rack formed on the inner surface of the outer sleeve, the ratchet further comprising a carriage, a first pawl engageable with the first rack and a second pawl engageable with the second rack;
- a rod telescopically oriented with the outer sleeve and connected to the carriage, the rod extending between a first end and a second end;
- and
- a rotatable cam engageable with the inner sleeve in a configuration to facilitate incremental movement of the rod relative to the outer sleeve in a first axial direction, the cam defining a socket configured for engagement with an instrument,
- wherein an expansion force applied to the first end of the rod causes incremental movement of the rod, independent of the cam, relative to the outer sleeve in the first axial direction.
3 more elements
A spinal correction apparatus comprising:
- a body;
- a ratchet disposed with the body;
- a longitudinal element connected to the ratchet;
- and
- an actuator disposed with the body and connected to the ratchet, the actuator being rotatable relative to the body and the ratchet to facilitate movement of the longitudinal element relative to the body and the ratchet,
- wherein the ratchet comprises a first rack and a second rack that is formed on an inner surface of the body, the ratchet further comprising a carriage connected with the first longitudinal element, a first pawl engageable with the first rack and a second pawl engageable with the second rack, the pawls being engageable with the carriage to facilitate axial movement of the first longitudinal element.
3 more elements
Dependencies are inferred from the claim text.