Cardiovascular cannula

Details Cardiovascular cannula Cardiovascular cannula

1980-02-25

1982-01-12

Truluck, Dalton L.

Surgery

Respiratory method or device

Ozone or ion generation

128348, 128350R, A61M 500, A61M 2500

Patent

active

043099947

ABSTRACT:
A bifurcated venous return cannula assembly is described for insertion into the vena cavae through a single incision in the right atrium. The cannula includes a single outward tube that is bifurcated at an inward end, forming two normally diverging flexible branches. The tube branches diverge naturally from the central axis of the single tube. An obturator slidably engages the bifurcated end of the tube to hold the branches together along the tube axis during initial insertion and to draw the branches back together within the atrium upon withdrawal. The obturator also enables the branch ends to separate within the atrium following initial insertion. The separating tube ends seek out and ascend the superior vena cava, and descend the inferior vena cava due to the natural resiliency of the branches and their tendency to seek their normal diverging positions.

REFERENCES:
patent: 945741 (1910-01-01), Birkenkamp
patent: 2624341 (1953-01-01), Wallace
patent: 2935068 (1960-05-01), Donaldson
patent: 3460541 (1969-08-01), Doherty
patent: 3835863 (1974-09-01), Goldberg et al.
patent: 3903895 (1975-09-01), Alley et al.
patent: 4114618 (1978-09-01), Vargas
patent: 4129129 (1978-12-01), Amrine
patent: 4248224 (1981-02-01), Jones

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