Surgery – Blood drawn and replaced or treated and returned to body
Patent
1987-09-10
1989-05-02
Yasko, John D.
Surgery
Blood drawn and replaced or treated and returned to body
604283, 128334C, A61M 3700
Patent
active
048264776
ABSTRACT:
A connector for connecting a flexible conduit which is used to contain blood flow in a extra-corporeal blood handling system to a second component in said system. The connector includes a dual-acting coupler with a first coupling section for joining to the flexible conduit and a second coupling section, which can be of conventional design, for joining to the second component. The first coupling section includes an outer tapered portion which tapers inward to a rounded thin edge at the end of the coupler. The connector further includes a generally ring-shaped compression collar having an inner tapered portion for encircling the outer tapered portion of the coupler, with the angle of taper of the inner tapered portion of the collar being at least as large as the angle of taper of the outer tapered portion of the coupler. When the collar is assembled over the tapered portion of the coupler with the flexible conduit therebetween, the two facing tapered portions compress the flexible conduit and focus the compression in the vicinity of the rounded edge of the coupler. This forms a tight seal at the juncture of the conduit and the coupler, thereby minimizing any gaps in the wall at the juncture which can cause blood coagulation by flow stagnation.
REFERENCES:
patent: 4049034 (1977-09-01), Vcelko et al.
patent: 4588402 (1986-05-01), Igari et al.
Abiomed Cardiovascular, Inc.
Colosimo Mark F.
Yasko John D.
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