Shielded trocar and trocar shield

Details Shielded trocar and trocar shield Shielded trocar and trocar shield

1997-03-03

1998-08-25

Dawson, Glenn K.

Surgery

Instruments

Cutting, puncturing or piercing

606167, A61B 1734, A61B 1732

Patent

active

057979430

ABSTRACT:
A trocar is formed from a cannula and an interfitting obturator for penetrating body cavity walls in laparoscopic and endoscopic surgery. The obturator is provided with an improved piercing tip having a pointed blade and an improved double locking blunt nosed shield design. Hydrophilic coatings or components are also employed on the shield and cannula to facilitate quicker shield action covering the pointed blade and ease of entry of the cannula tube through the body cavity wall. The improved shielded trocar is provided with an improved shield having a dolphin-nose shape at its distal end.

REFERENCES:
patent: 5267965 (1993-12-01), Deniega
patent: 5607440 (1997-03-01), Danks et al.
patent: 5618297 (1997-04-01), Hart et al.

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