Cannula

Details Cannula Cannula

1981-07-24

1984-05-29

Truluck, Dalton L.

Surgery

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

Material introduced into and removed from body through...

604164, A61M 500, A61M 2500

Patent

active

044512520

ABSTRACT:
A dual lumen cannula particularly for use in haemodialysis by inserting the cannula into the subclavian or femoral vein of a patient to contemporaneously remove blood from the vein for treatment and to return treated blood to the vein downstream from the point of removal. The cannula includes a pair of lumens separated by a septum. Blood is withdrawn through one of the lumens and treated blood is returned through the other lumen. The cannula is formed from a flexible thermo-plastic material and is sufficiently flexible to permit bending to conform to the shape of the vein without damage or kinking. The cannula has a peripheral generally cylindrical wall with a septum extending between spaced locations on the interior surface of the wall to define a pair of discrete lumens and at least one of the lumens is deformed at its end to facilitate insertion.

REFERENCES:
patent: 2175726 (1939-10-01), Gebauer
patent: 4098275 (1978-07-01), Consalvo
patent: 4134402 (1979-01-01), Mahurkar
patent: 4180068 (1979-12-01), Jacobsen et al.
patent: 4202332 (1980-05-01), Tersteegen et al.
patent: 4336036 (1982-06-01), Leeke et al.

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