Medical valve

Details Medical valve Medical valve

1993-07-12

1994-04-26

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604 83, 604167, 604244, 604283, A61M 3700

Patent

active

053062434

ABSTRACT:
A valve for medical use has a cannula mounted on a hub and fixed in a fluid conduit so that the cannula points upstream. An elastomeric valve element is mounted on the hub within the conduit so as to enclose the cannula. The valve element has a first solid portion of circular cross-section disposed upstream of the cannula point which closes the conduit, a second hollow frustoconical portion within which the cannula point is disposed, and a third hollow cylindrical portion surrounding the cannula downstream from its point and fixed to the hub. The second portion has a frustoconical interior passageway. 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.

REFERENCES:
patent: 4080965 (1978-03-01), Phillips
patent: 4121585 (1978-10-01), Becker, Jr.
patent: 4511359 (1985-04-01), Vaillancourt
patent: 4512766 (1985-04-01), Vaillancourt
patent: 4617012 (1986-10-01), Vaillancourt
patent: 4950260 (1990-08-01), Bonaldo
patent: 5065783 (1991-11-01), Ogle, II
patent: 5088984 (1992-02-01), Fields
patent: 5122123 (1992-06-01), Vaillancourt
patent: 5154703 (1992-10-01), Bonaldo

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