US 12,318,523 B2
Method for identifying the type of a medical filter, and apparatuses
Nicolas Clemens Lippert, Erding (DE)
Assigned to Fresenius Medical Care Deutschland GmbH, Bad Homburg (DE)
Appl. No. 18/025,520
Filed by Fresenius Medical Care Deutschland GmbH, Bad Homburg (DE)
PCT Filed Sep. 15, 2021, PCT No. PCT/EP2021/075284
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/058329, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 102020124395.2 (DE), filed on Sep. 18, 2020.
Prior Publication US 2023/0330314 A1, Oct. 19, 2023
Int. Cl. A61M 1/34 (2006.01); A61M 1/16 (2006.01)
CPC A61M 1/3403 (2014.02) [A61M 1/1601 (2014.02); A61M 2205/18 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/702 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for identifying a type of a medical filter or a class of filters, wherein the medical filter comprises a first filter compartment and a second filter compartment that are separated from each other by a filter medium, the method comprising:
generating a pressure in a fluid at a first side of the filter medium via a first pressure source so that the medical filter is exposed to the pressure;
measuring, over time, a first pressure profile at the first side of the filter medium using a first pressure sensor arranged between the first pressure source and the medical filter;
measuring, over time, a second pressure profile at a second side of the filter medium using a second pressure sensor;
evaluating both the first pressure profile and the second pressure profile to obtain at least one evaluation result, wherein evaluating both the first pressure profile and the second pressure profile comprises forming a pressure difference profile between the first pressure profile measured by the first pressure sensor and the second pressure profile measured by the second pressure sensor, and wherein evaluating both the first pressure profile and the second pressure profile comprises integrating of the pressure difference profile over time; and
assigning, to the medical filter, the type of filter or the class of filters based on the at least one evaluation result.