Retractable trocar

Details Retractable trocar Retractable trocar

1991-08-30

1994-06-07

Rosenbaum, C. Fred

Surgery

Instruments

Cutting, puncturing or piercing

604164, 604167, A61B 1732

Patent

active

053185803

ABSTRACT:
A trocar is received in a trocar tube for movement relative to the tube between a position extended from the tube for piercing and a retracted position shielded by the tube. The trocar is mounted within a housing which carries a spring normally biasing the trocar to the retracted position. A latch mechanism within the housing is engageable with the trocar to maintain the trocar in the extended position. The latch mechanism senses the application of piercing force to the trocar and, upon the interruption of such force in response to the completion of a piercing operation, functions to release the trocar for retraction by the spring.

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