US 10,376,639 B2
Valving system for infusion cassette
Corey Michael Magers, Oceanside, CA (US); and Edward Browka, Oneida, NY (US)
Assigned to CareFusion 2200, Inc., San Diego, CA (US)
Filed by CareFusion 2200, Inc., San Diego, CA (US)
Filed on Jun. 24, 2015, as Appl. No. 14/749,540.
Application 14/749,540 is a continuation in part of application No. 14/557,446, filed on Dec. 1, 2014.
Prior Publication US 2016/0151566 A1, Jun. 2, 2016
Int. Cl. A61M 5/168 (2006.01); A61M 5/14 (2006.01); A61M 5/145 (2006.01); A61M 39/22 (2006.01); A61M 5/142 (2006.01)
CPC A61M 5/16813 (2013.01) [A61M 5/145 (2013.01); A61M 5/1413 (2013.01); A61M 2005/14208 (2013.01); A61M 2005/14288 (2013.01); A61M 2039/226 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An infusion pump system comprising: a cassette recess comprising at least one valve actuator configured to extend through a surface of the cassette recess to operate a valve in a fluid passageway of a cassette mounted in the cassette recess, wherein the at least one valve actuator comprises: a base portion; a shaft extending from the base portion through the surface; a spring disposed on the shaft and extending along a portion of the shaft, wherein the spring is disposed interior to the surface; and a rotatable member disposed on the base portion; and a cam structure configured to periodically bear against the rotatable member of the at least one valve actuator to actuate the at least one valve actuator in a direction substantially parallel to the shaft, wherein the cam structure comprises a rotating cam having a protrusion or eccentricity that is configured to slide against the rotatable member to cause linear movement of the at least one valve actuator in the direction substantially parallel to the shaft.