Pumping apparatus for perfusion and other fluid catheterization

Details Pumping apparatus for perfusion and other fluid catheterization Pumping apparatus for perfusion and other fluid catheterization

1994-04-19

1996-06-25

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417460, 417521, 604152, 128DIG12, F04B 1700, A61M 520

Patent

active

055294634

ABSTRACT:
A pumping apparatus which is particularly useful in catheterization procedures has two pumps supported in a parallel arrangement. The pumps are engaged by an actuating rod connected to a power cylinder which reciprocates longitudinally between the two pumps. The two pumps are held within the housing such that only the plunger element of one pump is capable of movement in response to the actuating member while only the barrel element of the other pump is capable of movement in response to the actuating member. By way of this linkage, during movement of the actuating rod, one pump performs a pumping stroke while the other pump performs a suction stroke.

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Serial No. 186,667--Layer, "Pumping Apparatus for Perfusion and Other fluid Catherization Procedures" filed Jan. 25, 1994.
Serial No. 223,869--Reed et al.--"Pumping Apparatus for Perfusion and Other Fluid Catherization Procedures" filed Apr. 19, 1994.

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