Bongeur surgical instrument

Details Bongeur surgical instrument Bongeur surgical instrument

1991-10-22

1993-12-28

Yu, Mickey

Surgery

Instruments

Orthopedic instrumentation

606170, 606171, 606185, A61B 1700

Patent

active

052735192

ABSTRACT:
The rongeur has a frame with a medial horizontal channel in one portion and a stationary handle at the other portion. A carriage is slidably engaged in the channel. A movable handle is attached at a fulcrum arm at the bottom front of the frame. A two-piece shaft extends from an integral cover & barrel secured to the carriage. The shaft has a stationary lower half, and an upper half that reciprocates on the stationary half to open and close the bite area at the tip of the shaft in response to the surgeon gripping the handles. The shaft halves are held together by a slidable joint. The cover & barrel with the extended shaft can be cocked open to remove the shaft. The tip of the shaft has a closable bite area and is used to remove tissue or to take a biopsy. The tip can be rotated to various angles after pressing a release lever. Also, the shaft can be quickly removed and replaced with another shaft having a different tip. During normal use, the tension spring maintains the carriage and attached cover & barrel, and shaft stationary in the channel. Excessive squeezing of the handles by the surgeon while the surgeon has the instrument in his grip causes the carriage, cover & barrel and extended shaft to move to compensate for the excessive squeezing by the surgeon. The tension spring flexes to allow the carriage to move slightly. It provides a safety cushion, and prevents the tip from being damaged.

REFERENCES:
patent: 3752161 (1973-08-01), Bent
patent: 3835860 (1974-09-01), Garretson
patent: 4476863 (1984-10-01), Kanshin et al.
patent: 4586497 (1986-05-01), Dapra et al.
patent: 4722338 (1988-02-01), Wright et al.
patent: 4777948 (1988-10-01), Wright
patent: 4848338 (1989-07-01), Desatnick et al.
patent: 5061269 (1991-10-01), Muller
"News Release", Zimmer Inc., Dated Oct. 1966.

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