Safety trocar

Details Safety trocar Safety trocar

1993-06-07

1994-06-07

Pellegrino, Stephen C.

Surgery

Instruments

Cutting, puncturing or piercing

64164, 64264, 30366, A61B 1732

Patent

active

053185854

ABSTRACT:
A safety trocar is provided in which the cutting tip is withdrawn into the cannula in response to counterforce being removed from the cutting tip, e.g., by the tip entering a body cavity. The cutting tip is maintained in the exposed positioned by a mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the first mechanism is released by a second mechanism associated with the obturator. Penetration force is maintained at a minimum and safe and efficacious trocar entry is facilitated.

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F. S. Zubairov--"Needle for the Puncture and Lavage of the Abdominal Cavity" (Russian with English translation).

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