Pressure responsive valve catheter

Details Pressure responsive valve catheter Pressure responsive valve catheter

1992-07-21

1993-12-07

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604249, 604264, 137537, 251902, A61M 500

Patent

active

052679799

ABSTRACT:
A catheter for introducing material into the vascular system is provided. The catheter includes an elongated catheter body having a side wall defining a catheter lumen. The catheter body has a proximal portion. Material can be introduced into the catheter lumen at its proximal portion. The catheter body has a distal portion. The distal portion has a single wall in an exit zone. At least one pressure responsive exit is formed in the side wall of the distal portion of the catheter body. The pressure responsive exit permits material to exit from the catheter lumen in response to a pressure over a first predetermined amount while preventing material from entering into the catheter lumen at a pressure less than a second pre-determined amount.

REFERENCES:
patent: 960080 (1910-05-01), Fay et al.
patent: 2996077 (1961-08-01), Taggert
patent: 3503400 (1970-03-01), Osthagen et al.
patent: 3513874 (1970-05-01), Welsh et al.
patent: 3841308 (1974-10-01), Tate
patent: 3888249 (1975-06-01), Spencer
patent: 4737152 (1988-04-01), Alchas
patent: 4985022 (1991-01-01), Fearnot et al.

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