US 12,029,891 B2
Ventricular assist device control
Thorsten Siess, Aachen (DE); Walid Aboulhosn, Aachen (DE); Christoph Nix, Aachen (DE); and Katrin Lunze, Aachen (DE)
Assigned to Abiomed Europe GmbH, Aachen (DE)
Filed by Abiomed Europe GmbH, Aachen (DE)
Filed on Feb. 18, 2022, as Appl. No. 17/675,252.
Application 17/675,252 is a continuation of application No. 16/342,924, granted, now 11,285,311, previously published as PCT/EP2017/076295, filed on Oct. 16, 2017.
Claims priority of application No. 16194558 (EP), filed on Oct. 19, 2016.
Prior Publication US 2022/0241578 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/10 (2006.01); A61M 60/13 (2021.01); A61M 60/135 (2021.01); A61M 60/139 (2021.01); A61M 60/216 (2021.01); A61M 60/295 (2021.01); A61M 60/416 (2021.01); A61M 60/422 (2021.01); A61M 60/50 (2021.01); A61M 60/515 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/546 (2021.01)
CPC A61M 60/50 (2021.01) [A61M 60/13 (2021.01); A61M 60/135 (2021.01); A61M 60/139 (2021.01); A61M 60/216 (2021.01); A61M 60/295 (2021.01); A61M 60/416 (2021.01); A61M 60/422 (2021.01); A61M 60/515 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/546 (2021.01); A61M 2205/3334 (2013.01); A61M 2205/3365 (2013.01); A61M 2205/50 (2013.01); A61M 2230/06 (2013.01); A61M 2230/30 (2013.01); A61M 2230/42 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control device for a ventricular assist device (VAD) with settable speed levels, the control device comprising:
an input configured to receive at least one measuring signal related to a physiological condition of the circulatory system of a patient receiving heart assistance by the VAD, wherein the control device is configured to derive an actual value of at least one characteristic parameter of the heart from the at least one measuring signal and to provide a refined actual value of the at least one characteristic parameter in which effects of physiologically caused fluctuations are eliminated or reduced; and
an output configured to output an updated setting value for the speed level, wherein the control device is configured to produce the updated setting value based on the refined actual value and a predeterminable set-point value,
wherein the at least one characteristic parameter is a filling gradient of the left ventricular pressure during the diastolic phase of a cardiac cycle between the opening of the mitral valve and the closing of the mitral valve, and wherein the control device is configured to produce the updated setting values so that the filling gradient becomes or is kept positive and close to zero.