Gear activated trocar assembly

Details Gear activated trocar assembly Gear activated trocar assembly

1991-05-24

1993-06-08

Thaler, Michael H.

Surgery

Instruments

604105, 604164, 604174, 606198, A61B 1700

Patent

active

052174514

ABSTRACT:
A trocar assembly is disclosed for use in inserting a laparoscopic instrument into the abdominal cavity during surgery and includes a cylindrical member activated by intermeshing gears to expand a cylindrical member having a normally retracted outer diameter when the trocar assembly is within the abdominal cavity, to resist withdrawing movement of the assembly from the abdominal cavity.

REFERENCES:
patent: 1155169 (1915-09-01), Starkweather
patent: 1665790 (1928-04-01), Novack
patent: 1972428 (1934-09-01), Richard
patent: 4995868 (1991-02-01), Brazier

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