US 12,228,123 B2
Peristaltic pump with feeler pin
Frank Cai, Ontario, CA (US); Lun Zhang, Brea, CA (US); Derek Alan Carroll, Carson, CA (US); and Siddarth Shevgoor, Mission Viejo, CA (US)
Assigned to CareFusion 303, Inc., San Diego, CA (US)
Filed by CareFusion 303, Inc., San Diego, CA (US)
Filed on Oct. 19, 2023, as Appl. No. 18/490,113.
Application 18/490,113 is a continuation of application No. 17/586,610, filed on Jan. 27, 2022, granted, now 11,821,416.
Claims priority of provisional application 63/142,913, filed on Jan. 28, 2021.
Prior Publication US 2024/0044324 A1, Feb. 8, 2024
Int. Cl. F04B 43/12 (2006.01); F04B 49/06 (2006.01); A61M 5/142 (2006.01)
CPC F04B 43/1223 (2013.01) [F04B 49/06 (2013.01); A61M 5/14228 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A peristaltic pump comprising:
a plunger movable to selectively engage a pumping volume of a tubing segment to expand the pumping volume to draw fluid flow into the pumping volume and to contract the pumping volume to conduct fluid flow from the pumping volume, wherein the plunger defines a slot extending through the plunger in an axis perpendicular to a longitudinal axis of the tubing segment and the slot is movable with the plunger;
a sensing trigger movable relative to the movable slot and in response to a height of the pumping volume in the axis extending through the slot and transverse to the longitudinal axis of the tubing segment; and
a position transducer configured to receive a signal from the sensing trigger.