Medical roller pump improvement

Details Medical roller pump improvement Medical roller pump improvement

F - Mech Eng,Light,Heat,Weapons

04

B

103/31

F04B 43/08 (2006.01) F04B 43/00 (2006.01)

Patent

CA 1158477

ABSTRACT A roller pump particularly adapted for use in medical applications in which one or more hoses is compressed against an arcuate stator bearing surface by a plurality of rollers carried by a rotating rotor. The hoses define a fluid passage and are configured so as to reduce the amount of force necessary to close the internal passage. In this manner, leakage is greatly reduced or eliminated without requiring excessive force. In a preferred embodiment, the fluid passage is defined by first and second sidewalls which are generally spaced from each other and joined at first and second apices. Specifically, the sidewalls may be arcuate and, more specifically, elliptic with one of said sidewalls being positioned along the stator bearing surface with the other sidewall being engaged by the rotor during hose compression. Tabs may also be provided to extend from the apices for positioning of the fluid passage within the path of the rotor.

374280

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