Trocar with improved blade attachment

Details Trocar with improved blade attachment Trocar with improved blade attachment

1995-10-16

1997-03-11

Buiz, Michael Powell

Surgery

Instruments

Cutting, puncturing or piercing

604164, 604264, A61B 1734

Patent

active

056096046

ABSTRACT:
A trocar having an obturator with an obturator housing, a piercing tip and a rigid stem is disclosed. The piercing tip has a cutting edge surface and first and second spaced-apart legs generally parallel to each other extending away from the cutting edge surface. The stem is attached to the obturator housing at a first end of the obturator, and the legs of the piercing tip straddle the stem at an opposite end of the obturator. The straddling of the legs about the stem of the obturator fixes the piercing tip to the stem. The attachment of the piercing tip to the stem provides a secure attachment. The trocar is easy to manufacture and assemble, and the component parts can be readily disassembled. The piercing tip attachment is especially advantageous when the piercing tip is configured generally as a razor blade.

REFERENCES:
patent: 1333745 (1920-03-01), Wescott
patent: 3643649 (1972-02-01), Amato
patent: 3831814 (1974-08-01), Butler
patent: 4535773 (1985-08-01), Yoon
patent: 4601710 (1986-01-01), Moll
patent: 5314417 (1994-05-01), Stephens et al.
patent: 5344410 (1994-09-01), Kolkin et al.
patent: 5441041 (1995-08-01), Sauer et al.

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