US 11,696,979 B2
Device for connection status identification
Torsten Hochrein, Eschenau (DE); Stefan Saal, Schonungen (DE); and Frank Hedmann, Volkach (DE)
Assigned to FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH, Bad Homburg (DE)
Appl. No. 16/628,042
Filed by FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH, Bad Homburg (DE)
PCT Filed Jun. 28, 2018, PCT No. PCT/EP2018/067489
§ 371(c)(1), (2) Date Jan. 2, 2020,
PCT Pub. No. WO2019/007816, PCT Pub. Date Jan. 10, 2019.
Claims priority of application No. 10 2017 114 800.0 (DE), filed on Jul. 3, 2017.
Prior Publication US 2021/0138141 A1, May 13, 2021
Int. Cl. A61M 1/28 (2006.01); A61M 39/10 (2006.01)
CPC A61M 1/285 (2013.01) [A61M 39/10 (2013.01); A61M 2039/1005 (2013.01); A61M 2205/14 (2013.01); A61M 2205/3317 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A device for identifying a connection status between a patient catheter and a cassette system having a flexible tubing assembly, the device designed to be used in a dialysis machine, wherein the device comprises the patient catheter, the cassette system having the flexible tubing assembly, an electrical circuit comprising a patient connector provided with a diode resistivity network arranged in parallel with a switch disposed on the cassette system having the flexible tubing assembly, an electrical circuit comprising a diode resistivity network disposed on the patient catheter, and a measuring device for measuring at least resistivity of the electrical circuits, the resistivity depending on said connection status, wherein the measuring device is designed to measure (i) resistivity of the diode resistivity network of the patient catheter and (ii) resistivity of the diode resistivity network of the patient connector.