US 11,698,059 B2
Disposable dual-action reciprocating pump assembly
Yehuda Algawi, Binyamina (IL); Assaf Govari, Haifa (IL); Gili Attias, Haifa (IL); and Ilya Sitnitsky, Nahariya (IL)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Sep. 26, 2019, as Appl. No. 16/584,768.
Claims priority of provisional application 62/786,407, filed on Dec. 29, 2018.
Claims priority of provisional application 62/786,404, filed on Dec. 29, 2018.
Claims priority of provisional application 62/786,402, filed on Dec. 29, 2018.
Claims priority of provisional application 62/786,406, filed on Dec. 29, 2018.
Prior Publication US 2020/0208617 A1, Jul. 2, 2020
Int. Cl. F04B 5/02 (2006.01); A61M 5/142 (2006.01); A61B 18/14 (2006.01); A61M 5/00 (2006.01)
CPC F04B 5/02 (2013.01) [A61M 5/1422 (2013.01); A61B 18/1492 (2013.01); A61B 2218/002 (2013.01); A61M 5/007 (2013.01); A61M 2205/103 (2013.01); A61M 2205/42 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pump device, comprising:
a rotary motor; and
a compartment for insertion of a disposable pump part, the disposable pump part comprising:
an input port for intaking fluid;
an output port for outputting the fluid; and
a dual-action reciprocating assembly for pumping the fluid, wherein the assembly comprises a single piston and a rod configured to be coupled to the rotary motor, so as to drive the piston to pump fluid through the output port at opposing directions of motion of the single piston, wherein the disposable pump part further comprises a guide hub and a bar configured to reduce variations in motion speed of the single piston and thereby reduce a pulsation in the outputted fluid, the guide hub being configured to move in a reciprocating motion with the rod and comprising a guide channel, the bar being configured to rotate through the guide channel driven by the rotary motor.