US 12,251,505 B2
Dialysis device for performing a dialysis treatment
Thomas Nürnberger, Burkardroth (DE); and Stefan Kellermann, Massbach (DE)
Assigned to Fresenius Medical Care Deutschland GmbH, Bad Homburg (DE)
Appl. No. 17/044,921
Filed by Fresenius Medical Care Deutschland GmbH, Bad Homburg (DE)
PCT Filed Apr. 4, 2019, PCT No. PCT/EP2019/058494
§ 371(c)(1), (2) Date Oct. 2, 2020,
PCT Pub. No. WO2019/193090, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 10 2018 107 967.2 (DE), filed on Apr. 4, 2018.
Prior Publication US 2021/0154386 A1, May 27, 2021
Int. Cl. A61M 1/36 (2006.01); A61M 1/16 (2006.01)
CPC A61M 1/3639 (2013.01) [A61M 1/1601 (2014.02); A61M 1/3656 (2014.02); A61M 2205/15 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/702 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A dialysis device for performing a dialysis treatment, the dialysis device comprising:
a liquid conducting system comprising a first section and a second section;
a first pressure sensor arranged for measuring a first pressure in the first section;
a second pressure sensor arranged for measuring a second pressure in the second section;
a differential pressure sensor arranged for measuring a differential pressure pdiffm between the first section of the liquid conducting system and the second section of the liquid conducting system;
a monitoring unit configured to (i) calculate a differential pressure pdiffb between the first pressure measured by the first pressure sensor and the second pressure measured by the second pressure sensor and (ii) determine an operating status based on the measured differential pressure pdiffm, wherein the monitoring device is further configured to:
determine the operating status by comparing the calculated differential pressure pdiffb and the measured differential pressure pdiffm, or
determine a difference between the calculated differential pressure pdiffb and the measured differential pressure pdiffm and to compare the determined difference with a nominal value to determine the operating status; and
a control device configured to interrupt and/or block the dialysis treatment according to the determined operating status, and/or a display device configured to output a notification based on the determined operating status.