Curvilinear peristaltic pump having insertable tubing assembly

Details Curvilinear peristaltic pump having insertable tubing assembly Curvilinear peristaltic pump having insertable tubing assembly

1998-11-09

2000-12-26

Thorpe, Timothy S.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417474, 4174773, 604 67, 251 7, F04B 4906, F04B 4308, A61M 3100, F16K 704

Patent

active

06164921&

ABSTRACT:
A curvilinear peristaltic pump for facilitating the pumping of a liquid through a length of resilient tubing. The pump comprises a housing having a platen member attached thereto and a rotatable cam disposed therewithin. Also disposed within the housing is a drive unit of the pump which is mechanically coupled to the cam such that the activation of the drive unit results in the concurrent rotation of the cam in a first direction and the deactivation of the drive unit maintains the cam in a set position. Movably attached to the housing are a plurality of pump fingers of the pump, each of which has a first end which is cooperatively engaged to the cam and a second end which is disposed in spaced relation to the platen member. The cam is configured to sequentially move the pump fingers radially outwardly toward and inwardly away from the platen member when rotated in the first direction by the drive unit. A portion of the tubing may be extended between the platen member and the second ends of the pump fingers such that the sequential movement of the pump fingers toward and away from the platen member results in liquid within the tubing being pumped in the first direction of rotation of the cam. The pump is used in conjunction with a disposable tubing assembly which is provided with a shut-off valve to selectively obstruct the flow of liquid through the tubing assembly.

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