Trocar assembly with improved adapter seals

Details Trocar assembly with improved adapter seals Trocar assembly with improved adapter seals

1993-07-13

1995-03-14

Pellegrino, Stephen C.

Surgery

Instruments

Cutting, puncturing or piercing

604167, A61M 500

Patent

active

053973356

ABSTRACT:
The present invention is directed to a medical device for performing endoscopic procedures comprising a trocar and a cannula assembly having slidable adapter seals. The cannula assembly has a housing at the proximal extracorporeal end of a cannula. A generally semi-circular track follows the periphery of the cannula housing and at least one adapter seal slidably is engaged with the track. The adapter seal comprises a plate that accommodates a sealing element with an aperture for receiving surgical instruments. The adapter seal has engagement means for maintaining the adapter seal in the track. In addition, the adapter seal has releasing means that can be acted upon to apply a countering-force against a tensioning means in order to remove the adapter seal from the cannula assembly.

REFERENCES:
patent: 4442836 (1988-04-01), Meinecke
patent: 5104383 (1992-04-01), Shichman
patent: 5112321 (1992-05-01), Hiltebrandt
patent: 5211633 (1993-05-01), Stouder, Jr.
patent: 5221264 (1993-06-01), Wilk et al.
patent: 5224930 (1993-07-01), Spaeth et al.

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