Spinal disc surgical instrument

Details Spinal disc surgical instrument Spinal disc surgical instrument

1992-12-04

1995-01-24

Graysay, Tamara L.

Surgery

Instruments

Cutting, puncturing or piercing

606180, A61B 1722

Patent

active

053838840

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.

REFERENCES:
patent: 3732858 (1973-05-01), Banko
patent: 4669469 (1987-06-01), Gifford, III et al.
patent: 4955882 (1990-09-01), Hakky
patent: 5074841 (1991-12-01), Ademovic et al.

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