Miniature surgical instrument

Details Miniature surgical instrument Miniature surgical instrument

1993-06-28

1994-09-06

Aschenbrenner, Peter A.

Surgery

Instruments

Forceps

128751, 606170, A61B 1728

Patent

active

053444280

ABSTRACT:
A miniature surgical instrument (10) comprises a handle (12), shaft assembly (26) with an actuating linkage (L1, L2) movable freely therein and a distal working tip (30) with a shaft rotation sub-assembly (22, 24, 34) including multiple spring-stop pairs (40, 38) arranged in an annulus (44) around the shaft to receive cleansing water via an injection port (52) and/or through the handle and to pass it to the interior of the shaft via a port (12C) or past a seal (56) for flow of water in the shaft around the linkage and exiting in the tip vicinity to clear away surgical debris, the arranging allowing independent operation of the linkage, a lock (14) for the linkage and the tip rotation means. The arrangement prevents or minimizes debris accumulation in the first instance through its avoidance of a pressure differential from an insufflated body cavity to ambient air via the instrument.

REFERENCES:
patent: 4674501 (1987-06-01), Greenberg
patent: 5176702 (1993-01-01), Bales et al.

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