Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-12-22
1991-08-20
Hindenburg, Max
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604256, 2511491, 137849, A61M 2500, F16K 3728
Patent
active
050410954
ABSTRACT:
A hemostasis valve comprises a housing defining a passage therethrough adpated to receive an elongated member such as a catheter in hemostatically sealed condition. An elastic gasket valve is carried in the housing having slit means capable of permitting the elongated member to extend through the housing and the gasket member in hemostatically sealed condition. By this invention the gasket member defines a pair of opposed sides with a first slit extending inwardly of the gasket member from one of the opposed sides. A second slit extends inwardly of the gasket member from the other of the opposed sides. Both of the slits are of a shape defining a plurality of radii extending from a common origin. The first and second slits extend inwardly at a depth to engage but not to intersect each other, and the radii of the first slit each define an angle of at least 10.degree. to each of the radii of the second slit at points of engagement. By this, an improved hemostasis valve is provided.
REFERENCES:
patent: 4000739 (1977-01-01), Stevens
patent: 4610665 (1986-09-01), Matsumoto et al.
patent: 4626245 (1986-12-01), Weinstein
patent: 4673393 (1987-06-01), Suzuki et al.
patent: 4798594 (1989-01-01), Hillstead
patent: 4895346 (1990-01-01), Steigerwold
patent: 5000745 (1991-03-01), Guest et al.
Cordis Corporation
Hindenburg Max
Lewis Ralph A.
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