US 12,064,540 B2
Hemodialysis systems and methods
Michael J. Wilt, Windham, NH (US); Jason A. Demers, Manchester, NH (US); Kevin L. Grant, Litchfield, NH (US); Brian D. Tracey, Litchfield, NH (US); and James D. Dale, Milton, FL (US)
Assigned to DEKA Products Limited Partnership, Manchester, NH (US)
Filed by DEKA Products Limited Partnership, Manchester, NH (US)
Filed on Aug. 18, 2023, as Appl. No. 18/452,516.
Application 18/452,516 is a division of application No. 17/493,758, filed on Oct. 4, 2021, granted, now 11,793,915.
Application 16/658,877 is a division of application No. 15/386,546, filed on Dec. 21, 2016, granted, now 10,449,280.
Application 14/262,101 is a division of application No. 13/569,623, filed on Aug. 8, 2012, granted, now 8,721,884.
Application 13/569,623 is a division of application No. 12/072,908, filed on Feb. 27, 2008, granted, now 8,246,826.
Application 17/493,758 is a continuation of application No. 16/658,877, filed on Oct. 21, 2019, granted, now 11,154,646.
Application 15/386,546 is a continuation of application No. 14/262,101, filed on Apr. 25, 2014, granted, now 9,555,179.
Claims priority of provisional application 60/903,582, filed on Feb. 27, 2007.
Claims priority of provisional application 60/904,024, filed on Feb. 27, 2007.
Prior Publication US 2023/0398274 A1, Dec. 14, 2023
Int. Cl. A61M 1/16 (2006.01); A61M 1/14 (2006.01); A61M 1/26 (2006.01); A61M 1/34 (2006.01); A61M 1/36 (2006.01)
CPC A61M 1/1601 (2014.02) [A61M 1/154 (2022.05); A61M 1/155 (2022.05); A61M 1/15625 (2022.05); A61M 1/1565 (2022.05); A61M 1/16 (2013.01); A61M 1/1621 (2014.02); A61M 1/1654 (2013.01); A61M 1/1694 (2013.01); A61M 1/267 (2014.02); A61M 1/3401 (2022.05); A61M 1/341 (2014.02); A61M 1/3413 (2013.01); A61M 1/3424 (2014.02); A61M 1/3609 (2014.02); A61M 1/3621 (2013.01); A61M 1/36224 (2022.05); A61M 1/36225 (2022.05); A61M 1/362263 (2022.05); A61M 1/362265 (2022.05); A61M 1/362266 (2022.05); A61M 1/3623 (2022.05); A61M 1/3638 (2014.02); A61M 1/3643 (2013.01); A61M 1/3644 (2014.02); A61M 1/3646 (2014.02); A61M 1/3649 (2014.02); A61M 1/365 (2014.02); A61M 1/3652 (2014.02); A61M 1/3672 (2013.01); A61M 1/1561 (2022.05); A61M 1/362261 (2022.05); A61M 2205/07 (2013.01); A61M 2205/12 (2013.01); A61M 2205/123 (2013.01); A61M 2205/125 (2013.01); A61M 2205/128 (2013.01); A61M 2205/15 (2013.01); A61M 2205/16 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3324 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/36 (2013.01); A61M 2205/505 (2013.01); A61M 2205/82 (2013.01); A61M 2205/8218 (2013.01); A61M 2205/8225 (2013.01); Y10T 137/87893 (2015.04)] 5 Claims
 
1. A method to test the integrity of a membrane of a dialyzer in a hemodialysis system with each therapy, the method comprising:
pumping a liquid from a dialysate path through the dialyzer into a blood path;
stopping the pumping of the liquid into the blood path;
pumping air into the blood path;
displacing the liquid in the blood path through the membrane of the dialyzer with the air;
monitoring a flow of the air in the blood path; and
detecting a ruptured membrane of the dialyzer when the flow of the air does not stop once the liquid in a blood path side of the dialyzer has been displaced by the air.