Medical valve element

Details Medical valve element Medical valve element

1995-12-21

1998-09-15

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 86, A61M 500

Patent

active

058073477

ABSTRACT:
A medical valve element has a first solid portion of circular cross-section, a second cylindrical portion with a frustoconical interior passage, and a third hollow cylindrical portion featuring peripheral grooves. The valve element is made of elastomeric material and the first portion is surrounded by a solid metallic collar. The valve element is used in a medical valve. The valve has a cannula mounded on a hub and fixed in a fluid conduit so that the cannula points upstream. The elastomeric valve element is mounted on the hub within the conduit so as to enclose the cannula. In use, the valve element is compressed by application of a medical appliance to the valve element first portion to cause the cannula point to pierce the first portion to provide a path for fluid flow through the conduit. The collar causes the valve first portion to reseal upon removal of the medical appliance and expansion of the valve element back to its original condition.

REFERENCES:
patent: 3134380 (1964-05-01), Armao
patent: 4457749 (1984-07-01), Bellotti et al.
patent: 4512766 (1985-04-01), Vaillancourt
patent: 4725267 (1988-02-01), Vaillancourt
patent: 4915697 (1990-04-01), DuPont
patent: 5015242 (1991-05-01), Heifetz
patent: 5273533 (1993-12-01), Bonaldo
patent: 5306243 (1994-04-01), Bonaldo
patent: 5380306 (1995-01-01), Brinon
patent: 5487728 (1996-01-01), Vaillancourt
patent: 5607392 (1997-03-01), Kanner

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