US 12,133,944 B2
Apparatus and method for determining the static patient pressure
Torsten Hochrein, Hausen (DE); and Frank Hedmann, Volkach (DE)
Assigned to FRESENIUS MEDICAL CARE DEUTSHLAND GMBH, Bad Homburg (DE)
Appl. No. 16/966,169
Filed by Fresenius Medical Care Deutschland GmbH, Bad Homburg (DE)
PCT Filed Jan. 24, 2019, PCT No. PCT/EP2019/051798
§ 371(c)(1), (2) Date Jul. 30, 2020,
PCT Pub. No. WO2019/149620, PCT Pub. Date Aug. 8, 2019.
Claims priority of application No. 10 2018 102 151.8 (DE), filed on Jan. 31, 2018.
Prior Publication US 2021/0038797 A1, Feb. 11, 2021
Int. Cl. A61M 1/28 (2006.01); A61M 1/14 (2006.01)
CPC A61M 1/281 (2014.02) [A61M 1/154 (2022.05); A61M 1/155 (2022.05); A61M 1/1565 (2022.05); A61M 1/159 (2022.05); A61M 2205/12 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3344 (2013.01); A61M 2210/1021 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A peritoneal dialysis machine comprising at least one apparatus for determining static patient pressure of a peritoneal dialysis patient, wherein the apparatus comprises:
a patient line,
a pump in communication with the patient line for conveying a dialysis solution into an abdomen of the patient,
a valve by which the patient line is blockable,
a pressure chamber that is in fluid communication with the patient line via an open blocking element,
a pressure measurement device that is arranged such that it measures a pressure in the pressure chamber or a pressure correlated with the pressure in the pressure chamber,
a control unit that is configured such that it effects a pressure build-up in the pressure chamber to a measurement pressure in a first step and opens the blocking element in a second step so that the patient line or a section thereof is acted on by the measurement pressure of the pressure chamber, and
an evaluation unit that evaluates a measured pressure after the opening of the blocking element and is configured such that it carries out a localization as to a position at which a constriction or a closure of the patient line is present based on a change between the measurement pressure and the measured pressure after the opening of the blocking element and/or based on a speed of the change between the measurement pressure and the measured pressure.