Spinal disc surgical instrument
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United States of America Patent
Stats
-
Jan 24, 1995
Grant Date -
N/A
app pub date -
Dec 4, 1992
filing date -
Dec 4, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The surgical instrument of the present invention includes a cannula shaft terminating in a cutting window at the distal end of the cannula shaft. The proximal end of the cannula shaft is supported by a handle having an axial bore extending therethrough. A flexible drive shaft, connected at one end to an external drive mechanism, extends through the handle and the cannula shaft. A cutting head is mounted to the distal end of the drive shaft and positioned for cooperative cutting action with the cutting window of the cannula shaft. A non-rotating idler shaft is journaled about the drive shaft. Severed tissue is removed or evacuated from the surgical site through an annular passage formed by the cannula and idler shafts.
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