Trocar

Details Trocar Trocar

1994-05-06

1996-08-13

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604265, 604169, 604167, A61M 500, A61M 514

Patent

active

055451500

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 cannula also has an improved inexpensive flexible flapper valve and can be manufactured with a reusable cannula tube but disposable flapper valve assembly to minimize cost.

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1989 Ethicon/Endopath Disposable Surgical Trocar and Sleeve Instructions.
1992 U.S. Surgical/AutoSuture Information Booklet.
1992 USSC/Auto Suture Company "There's A Revolution in Surgery" Advertisement, Raven Press, vol. 2, No. 2.
1991 Dexide, Inc. Look in Your Position Advertisement.
1990 USSC Auto Suture Company Brochure "The Auto Suture Laproscopic System" .

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