A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/36 (2006.01) F04B 43/12 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2155733
A peristaltic pump includes a pump race for receiving a flexible tubing. A rotatable pump rotor (292) carries at least one roller (300) for contacting the tubing (134/136). A roller locating mechanism (306) moves the pump roller between a retracted position for free contact with the tubing and an extended position making operative contact with the tubing. A controller (246) operates the pump (i) in a pumping mode, during which the rotor (292) is rotated with the roller (300) located in its extended position, and (ii) in a valving mode, during which rotation of the rotor is terminated and the roller is selectively moved between its extended position to block fluid flow through the tubing and its retracted position to permit fluid flow through the tubing. The pump thus provides a peristaltic pump pumping function, as well as serving as a valve element.
Une pompe péristaltique comporte un chenal pour recevoir un tube flexible. Un rotor de pompe (292) porte au moins un galet (300) pour venir en contact avec le tube (134/136). Un mécanisme (306) de positionnement du galet déplace le galet de la pompe entre une position de retrait sans contact avec le tube et une position avancée de contact de fonctionnement avec le tube. Un dispositif de commande (246) de la pompe permet (i) en mode pompe, de faire fonctionner la pompe en assurant la rotation du rotor (292) pendant que le galet (300) est dans sa position avancée ou (ii) en mode valve, d'arrêter la pompe par l'arrêt du rotor, le galet pouvant alors être déplacé sélectivement entre sa position avancée pour empêcher le fluide de circuler dans le tube et sa position de retrait permettant au fluide de circuler. La pompe péristaltique peut donc, en plus de sa fonction de pompe, être utilisée comme valve.
Chapman Arthur S.
Williamson Warren P.
Baxter International Inc.
Sim & Mcburney
LandOfFree
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