US 12,257,424 B2
Implantable ventricular assist system and method for operating same
Thomas Alexander Schlebusch, Renningen (DE)
Assigned to KARDION GMBH, Stuttgart (DE)
Appl. No. 15/734,342
Filed by KARDION GMBH, Stuttgart (DE)
PCT Filed Jun. 6, 2019, PCT No. PCT/EP2019/064779
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2019/234148, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 10 2018 208 913.2 (DE), filed on Jun. 6, 2018.
Prior Publication US 2021/0346675 A1, Nov. 11, 2021
Int. Cl. A61M 60/523 (2021.01); A61M 60/13 (2021.01); A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/816 (2021.01)
CPC A61M 60/13 (2021.01) [A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/523 (2021.01); A61M 60/816 (2021.01); A61M 2205/3317 (2013.01); A61M 2205/3375 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for operating an implantable cardiac assist system, the method comprising:
measuring an impedance parameter using one or more electrodes of the implantable cardiac assist system, the implantable cardiac assist system comprising a cannula configured to supply a fluid and a flow machine configured to generate a fluid flow, wherein the one or more electrodes are configured to measure an impedance parameter;
determining, by a processor of the implantable cardiac assist system, a first impedance parameter value of the impedance parameter at a first point in time measured by the one or more electrodes;
determining, by the processor, a second impedance parameter value of the impedance parameter at a second point in time different from the first point in time measured by the one or more electrodes; and
determining, by the processor, a change in the impedance parameter based at least in part on the first impedance parameter value and the second impedance parameter value or comparing at least the first impedance parameter value or the second impedance parameter value to a threshold value.