US 11,779,691 B2
Pumping cassette
Jason A. Demers, Manchester, NH (US); Michael J. Wilt, Windham, NH (US); Kevin L. Grant, Litchfield, NH (US); James D. Dale, Milton, FL (US); and Brian D. Tracey, Litchfield, NH (US)
Assigned to DEKA Products Limited Partnership, Manchester, NH (US)
Filed by DEKA Products Limited Partnership, Manchester, NH (US)
Filed on Nov. 30, 2020, as Appl. No. 17/107,495.
Application 17/107,495 is a continuation of application No. 16/133,279, filed on Sep. 17, 2018, granted, now 10,851,769.
Application 16/133,279 is a continuation of application No. 15/635,780, filed on Jun. 28, 2017, granted, now 10,077,766.
Application 15/635,780 is a continuation of application No. 14/589,829, filed on Jan. 5, 2015, granted, now 9,700,660.
Application 14/589,829 is a continuation of application No. 13/684,995, filed on Nov. 26, 2012, granted, now 8,926,294.
Application 13/684,995 is a continuation of application No. 11/871,712, filed on Oct. 12, 2007, granted, now 8,317,492.
Claims priority of provisional application 60/921,314, filed on Apr. 2, 2007.
Claims priority of provisional application 60/904,024, filed on Feb. 27, 2007.
Prior Publication US 2021/0146028 A1, May 20, 2021
Int. Cl. F04B 7/02 (2006.01); F04B 53/10 (2006.01); F04B 43/06 (2006.01); A61M 1/16 (2006.01); A61M 1/28 (2006.01); F04B 9/109 (2006.01); F04B 13/02 (2006.01); F04B 23/06 (2006.01); F04B 41/06 (2006.01); F04B 43/00 (2006.01); F04B 43/073 (2006.01); F04B 45/02 (2006.01); F04B 45/053 (2006.01); F04B 49/22 (2006.01); F04B 53/06 (2006.01); F04B 53/16 (2006.01); F17D 3/00 (2006.01); F04B 49/02 (2006.01); A61M 60/43 (2021.01)
CPC A61M 1/1639 (2014.02) [A61M 1/16 (2013.01); A61M 1/1605 (2014.02); A61M 1/1656 (2013.01); A61M 1/1664 (2014.02); A61M 1/1666 (2014.02); A61M 1/287 (2013.01); F04B 7/02 (2013.01); F04B 9/109 (2013.01); F04B 13/02 (2013.01); F04B 23/06 (2013.01); F04B 41/06 (2013.01); F04B 43/00 (2013.01); F04B 43/06 (2013.01); F04B 43/0736 (2013.01); F04B 45/02 (2013.01); F04B 45/0536 (2013.01); F04B 49/02 (2013.01); F04B 49/22 (2013.01); F04B 53/06 (2013.01); F04B 53/10 (2013.01); F04B 53/16 (2013.01); F17D 3/00 (2013.01); A61M 60/43 (2021.01); A61M 2205/12 (2013.01); A61M 2205/128 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3324 (2013.01); A61M 2205/3368 (2013.01); Y10T 137/0324 (2015.04); Y10T 137/0379 (2015.04); Y10T 137/2521 (2015.04); Y10T 137/85978 (2015.04); Y10T 137/86139 (2015.04)] 19 Claims
OG exemplary drawing
 
1. A pump cassette comprising:
a middle plate interposed between a first plate and a second plate, the middle plate having a first side facing the first plate and a second side facing the second plate;
the first plate comprising a first control gas chamber wall of a first diaphragm valve;
the second plate comprising a second control gas actuation chamber wall of a second diaphragm valve;
the cassette including a pneumatic port for each of the first diaphragm valve and the second diaphragm valve, each said pneumatic port extending away from the cassette and configured for connection to separate conduits providing pneumatic pressure to the pump cassette;
wherein the pneumatic port for the first diaphragm valve connects to a first valve control gas chamber defined by the first control gas chamber wall and a first valve diaphragm positioned between the first plate and the middle plate;
wherein the pneumatic port for the second diaphragm valve connects to a second valve control gas chamber defined by the second control gas chamber wall and a second valve diaphragm positioned between the second plate and the middle plate; and
wherein the first plate comprises a pump actuation chamber wall of a diaphragm pump, the second plate comprises a pumping chamber wall of the diaphragm pump opposite the pump actuation chamber wall of the first plate, and the cassette includes a pneumatic port for the diaphragm pump, said pneumatic port extending away from the cassette and configured for connection to a conduit carrying pneumatic pressure to the pump cassette, wherein the pneumatic port for the diaphragm pump connects to a pump actuation chamber defined by the pump actuation chamber wall and a pump diaphragm positioned between the middle plate and either the first plate or the second plate.