US 12,188,469 B2
Using silicone o-rings in dual action irrigation pump
Yehuda Algawi, Binyamina (IL); Assaf Govari, 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. 13, 2023, as Appl. No. 18/466,342.
Application 18/466,342 is a continuation of application No. 16/585,264, filed on Sep. 27, 2019, granted, now 11,795,941.
Claims priority of provisional application 62/786,402, filed on Dec. 29, 2018.
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 62/786,406, filed on Dec. 29, 2018.
Prior Publication US 2023/0417238 A1, Dec. 28, 2023
Int. Cl. F04B 53/14 (2006.01); F16J 9/28 (2006.01)
CPC F04B 53/143 (2013.01) [F16J 9/28 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A disposable dual-action reciprocating pump part, comprising:
an input port;
an output port;
a piston and a cylinder, the piston being configured to move bi-directionally inside the cylinder to cause fluid to be pumped from the input port and through the output port, the cylinder and output port being connected by a first channel disposed on a first side of the piston and a second channel disposed on a second side of the piston;
a first non-return valve disposed in the first channel such that fluid flows through the first channel and not the second channel while the piston moves toward the first channel;
a second non-return valve disposed in the second channel such that fluid flows through the second channel and not the first channel while the piston moves toward the second channel;
a rod coupled to the piston, the rod having a first portion extending away from the piston in a first direction and a second portion extending away from the piston in a second direction that is opposite to the first direction;
a mechanical smoothing mechanism, comprising:
a guide hub including a guide channel connected to the rod, the guide channel having a guide profile,
a cylinder head,
a rotary shaft coupled to the cylinder head,
a bar disposed though the guide channel and attached to the cylinder head,
such that the mechanical smoothing mechanism is configured to induce the rod to move back and forth along its axis in the first direction and the second direction.