End cut apparatus for implanting spinal fusion device
AssigneeCortek, Inc.
InventorsJames E. Nicholson, Scott G. Tromanhauser, Dale E. Whipple
Life of this patent
Estimating the term…
Abstract
An end cut tool for making an end cut in bone is disclosed that comprises: A) a shaft having first and second ends, 1) the first end having a blade attached thereto for making the end cut in the bone, and 2) the second end having a handle attached thereto substantially perpendicular to the axis of the shaft to facilitate rotation of the shaft, and B) at least one interlock located between the first and second ends, the interlock preventing rotation of the blade during insertion into a patient and then preventing withdrawal of the tool during use.
Claims19
An end cut tool for making an end cut in bone comprising:
- A) a shaft having first and second ends,
- 1) said first end having a blade attached thereto substantially perpendicular to the axis of said shaft for making said end cut in said bone, and
- 2) said second end having a handle attached thereto substantially perpendicular to the axis of said shaft to facilitate rotation of said shaft, and
- B) at least one interlock located between said first and second ends, said interlock preventing rotation of said blade during insertion into a patient and further preventing withdrawal of said tool during rotation.
An end cut tool for making an end cut in each of two vertebrae, each of said vertebrae being adjacent to a space left by surgically removed spinal tissue, said tool comprising:
- A) a substantially cylindrical shaft having first and second ends,
- 1) said first end having a blade attached thereto for making said end cuts in said vertebrae, and
- 2) said second end having a handle attached thereto substantially perpendicular to the axis of said shaft to facilitate rotation of said shaft;
- and
- B) interlocking means comprising a spring-held interlock that engages a slot in said shaft located between said first and second ends for preventing rotation of said blade during insertion into a patient and then preventing withdrawal of said tool during use;
- and
- C) a depth stop on said shaft between said first and second ends.
A surgical device comprising the combination of
- I) an end cut tool for making an end cut in bone comprising:
- A) a shaft having first and second ends,
- 1) said first end having a blade attached thereto substantially perpendicular to the axis of said shaft for making said end cut in said bone, and
- 2) said second end having a handle attached thereto substantially perpendicular to the axis of said shaft to facilitate rotation of said shaft;
- and
- B) interlocking means located between said first and second ends for preventing rotation of said blade during insertion into a patient and further preventing withdrawal of said tool during rotation;
- and
- II) a guide comprising a tube having a first end and a second end, said tube being configured for insertable acceptance of said shaft of said tool and having tangs extending from one end thereof.
A surgical device comprising the combination of
- I) a tool for making end cuts in each of two vertebrae, each of said vertebrae being adjacent to a space left by surgically removed spinal tissue, said tool comprising:
- A) a substantially cylindrical shaft having first and second ends,
- 1) said first end having a blade attached thereto substantially perpendicular to the axis of said shaft for making said end cuts in said vertebrae, and
- 2) said second end having a handle attached thereto substantially perpendicular to the axis of said shaft to facilitate rotation of said shaft;
- and
- B) interlocking means located between said first and second ends comprising a spring-held interlock that engages a slot in said shaft and that is rotated out of said slot when said tool is inserted into said guide for preventing rotation of said blade during insertion into a patient and further preventing withdrawal of said tool during;
- and
- C) a depth stop on said shaft between said first and second ends;
- II) a guide comprising a tube having a first and second end, said tube being configured for insertable acceptance of said shaft of said tool and having tangs tapered to conform to natural lordosis extending from one end thereof adapted for insertion between the vertebrae to distract said vertebrae to a preferred dimension.
Dependencies are inferred from the claim text.