Patent ID: 8043075
Filing Date: 2011-10-25
Classification: A61M,F04B

Abstract:
1. A progressive cavity propagation pump comprising: a body made at least partially of an elastomeric material, the body adapted to be mounted to a stationary structure and including a centrally disposed aperture formed therein; an inlet port and an outlet port, each port being coupled to the body; a flow passage formed in the body and extending along a circular path between the inlet port and the outlet port, a pair of confronting, normally contacting portions of the body defining a normally closed portion of the flow passage, the normally closed portion of the flow passage having a first end coupled to the inlet port and a second end coupled to the outlet port, the body being sequentially deformable so as to (a) selectively separate the confronting body portions along the normally closed portion of the flow passage whereby to selectively open a cavity at the first end of the normally closed portion of the flow passage, and (b) selectively separate the confronting body portions ahead of the cavity and re-close the confronting body portions behind the cavity to thereby propagate the cavity therealong toward the second end of the normally closed portion of the flow passage, the inlet port being fluidicly uncoupled with the outlet port when the pump is in a free state condition; and an actuating device coupled to the body, the actuating device including a driven axle disposed within the aperture of the body and operable to orbit in a circular motion to sequentially deform the body and create and propagate the cavity so as to draw a packet of fluid from the inlet port and propagate the packet of fluid toward the outlet port.