Valve for permanent venous cannulae or for catheter insertion me

Details Valve for permanent venous cannulae or for catheter insertion me Valve for permanent venous cannulae or for catheter insertion me

1989-02-02

1990-04-17

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604169, A61M 518

Patent

active

049176684

ABSTRACT:
A housing having a channel is provided with a slotted, elastomeric valve body dividing the channel. The slotted valve body is biased in the closed position by a metal spring. If the valve body's material loses resiliency, the spring guarantees that the valve takes its closed position, even if the valve body is kept in the opened state for a considerable span of time by a steel cannula inserted through the valve body.

REFERENCES:
patent: 4000739 (1977-01-01), Stevens
patent: 4233982 (1980-11-01), Bauer et al.
patent: 4243034 (1981-01-01), Brandt
patent: 4496348 (1985-01-01), Genese et al.

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