US 11,872,336 B2
Dialysis machine having blood leak sensor
Reiner Spickermann, Wasserlosen-Burghausen (DE)
Assigned to FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH, Bad Homburg (DE)
Appl. No. 17/049,630
Filed by Fresenius Medical Care Deutschland GmbH, Bad Homburg (DE)
PCT Filed Apr. 17, 2019, PCT No. PCT/EP2019/059972
§ 371(c)(1), (2) Date Oct. 22, 2020,
PCT Pub. No. WO2019/206773, PCT Pub. Date Oct. 31, 2019.
Claims priority of application No. 10 2018 109 702.6 (DE), filed on Apr. 23, 2018.
Prior Publication US 2021/0244867 A1, Aug. 12, 2021
Int. Cl. A61M 1/16 (2006.01); A61M 1/36 (2006.01)
CPC A61M 1/1692 (2013.01) [A61M 1/3626 (2013.01); A61M 2205/15 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3306 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A dialysis machine having a dialyzer, an extracorporeal blood circuit, a dialysis solution circuit, and a control unit, wherein a blood leak sensor is arranged downstream of the dialyzer in the dialysis solution circuit; wherein the control unit is configured to initiate an error routine when the signal of the blood leak sensor shows an indication of a presumed blood leak; and wherein a further sensor is furthermore arranged downstream of the dialyzer in the dialysis solution circuit,
characterized in that
the control unit is configured to use the signal of the further sensor correlated in time with the signal of the blood leak sensor as a suppression criterion for the initiation of the error routine, wherein the further sensor is arranged downstream of the blood leak sensor and the signals of the blood leak sensor and the further sensor do not reflect simultaneous observations of their respective measured values.