Powered trocar

Details Powered trocar Powered trocar

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2069060

A pneumatically powered trocar assembly includes a source of compressed gas which releases a metered amount of gas to a chamber. A piston slidably positioned within the chamber is driven forward by the compressed gas introduced therein, and an obturator with a tissue piercing tip are advanced thereby. Optionally, a sensor detects the presence of body tissue within the cutting path of the tip and blocks the passage of compressed gas to the chamber, or alternatively, opens an escape vent to release compressed gas therefrom if insufficient body tissue resistance is encountered. The powered trocar assembly is intended for use in conjunction with a cannula assembly to create a passage to the interior of a body cavity for conducting surgical procedures.

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