Trocar with disposable valve and reusable cannula

Details Trocar with disposable valve and reusable cannula Trocar with disposable valve and reusable cannula

1998-03-10

2000-07-25

Polutta, Mark O.

Surgery

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

Treating material introduced into or removed from body...

604164, 604167, 604246, 604278, A61M 500

Patent

active

060931760

ABSTRACT:
A modular trocar assembly having a cannula, a passive valve seal assembly and an instrument seal assembly all releasably joined to define a central axial bore, where the passive valve seal assembly contains a valve seal which prevents passage of gas through the trocar assembly into the atmosphere when no instrument is inserted but which opens to allow for insertion of an instrument, and where the instrument seal assembly contains an instrument reducer seal which prevents passage of gas through the trocar assembly into the atmosphere when an instrument is inserted through the valve seal. The passive valve seal assembly and the instrument seal assembly are preferably composed of plastic so as to be disposable, while the cannula is preferably composed of a sterilizable material to enable reuse.

REFERENCES:
patent: 4626245 (1986-12-01), Weinstein
patent: 4655752 (1987-04-01), Honkanen et al.
patent: 5009391 (1991-04-01), Steigerwald
patent: 5059186 (1991-10-01), Yamamoto et al.
patent: 5092857 (1992-03-01), Fleischhacker
patent: 5385552 (1995-01-01), Haber et al.
patent: 5584850 (1996-12-01), Hart et al.
patent: 5603702 (1997-02-01), Smith et al.
patent: 5634908 (1997-06-01), Loomas
patent: 5871471 (1999-02-01), Ryan et al.
patent: 5895377 (1999-04-01), Smith et al.
patent: 5980493 (1999-11-01), Smith et al.
patent: 5989224 (1999-11-01), Exline et al.

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