Blood pulsating and/or pumping device

Details Blood pulsating and/or pumping device Blood pulsating and/or pumping device

1978-05-25

1981-02-17

Truluck, Dalton L.

Surgery

Truss

Perineal

417394, 417385, A61B 103

Patent

active

042508720

ABSTRACT:
A continuous length of flexible polymeric tubing having a smooth fissureless inner surface throughout is provided with a region intermediate its ends which region has an inside diameter greater than the inside diameter of the remainder of said tubing and a thinner wall than that of the remainder of said tubing with a gradual transition in wall thickness and diameter therebetween. A rigid walled enclosure surrounds said region of the tubing with a slight clearance therebetween except at the ends of the enclosure which encircle the tubing beyond said region with a snug fit. A duct is joined to the enclosure near one end for feeding fluid under pressure thereto. Various arrangements of over-pressure relief prevent pinching of the tubing while affording controlled indentation thereof. The transition section of the tubing wall can cooperate with a port in the enclosure to afford said overpressure relief. Portions of the tubing wall may be thickened (i.e., strengthened) or attached to the enclosure to limit indentation.

REFERENCES:
patent: 761162 (1904-05-01), Gold
patent: 3406633 (1968-10-01), Schomburg
patent: 3478695 (1969-11-01), Goranson et al.
patent: 3630644 (1971-12-01), Bellhouse
patent: 3639084 (1972-02-01), Goldhaber
patent: 3814547 (1974-06-01), Kitrilakis et al.
patent: 3955557 (1976-05-01), Takagi
patent: 4080958 (1978-03-01), Bregman et al.
patent: 4116589 (1978-09-01), Rishton
Wakabayashi et al., Archives of Surgery, vol. 105, Jul. 1972, pp. 36-41.
Klain et al., Trans. Amer. Soc. Artif. Inter. Orgs., vol. XVI, 1970, pp. 400-408.
Eguchi et al., Surgery, vol. 63, No. 3, Mar. 1968, pp. 490-495.
Wildevaur et al., Trans. Amer. Soc. Art. Inter. Orgs., vol. XIV, 1968, pp. 276-283.

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