Safety trocar

Details Safety trocar Safety trocar

1994-12-07

1996-01-23

Pellegrino, Stephen C.

Surgery

Instruments

Cutting, puncturing or piercing

604164, 604264, 30366, A61B 1732

Patent

active

054861900

ABSTRACT:
A safety trocar is provided in which the cannula is reciprocally mounted to the cannula housing and reciprocates into the cannula housing when a proximally directed force is applied thereto. The piercing tip is maintained in the exposed position by a latching mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the proximal force is removed from the cannula, the cannula thus advancing distally and releasing the latching mechanism. 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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