Two stage venous return catheter

Details Two stage venous return catheter Two stage venous return catheter

1986-12-23

1988-11-29

Richman, Barry S.

Surgery

Blood drawn and replaced or treated and returned to body

604249, 604256, 604264, A61M 103, A61M 2500

Patent

active

047878827

ABSTRACT:
Catheters are disclosed which are adapted for insertion into the heart and which include at least one inlet opening at the front end thereof, at least one outlet opening at the other end thereof, and at least one intermediate opening therebetween, and which include a cylindrical sleeve for opening and closing the intermediate opening so that it can be selectively opened and closed thereby. These catheters are employed most particularly for the withdrawal of blood from both the inferior vena cava and from the right auricle and/or from the superior vena cava of the heart.

REFERENCES:
patent: 4129129 (1978-12-01), Amrine
patent: 4184497 (1980-01-01), Kolff et al.
patent: 4204328 (1980-05-01), Kutner
patent: 4639252 (1987-01-01), Kelly et al.
patent: 4643712 (1987-02-01), Kulik et al.
patent: 4666426 (1987-05-01), Aigner

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