US 2026/0100275 A1 · VENTRICULAR ASSIST DEVICE

Abstract

A control device (100) for controlling the rotational speed (nVAD(t)) of a non-pulsatile ventricular assist device, VAD, (50) uses an event-based within-a-beat control strategy, wherein the control device is configured to alter the rotational speed of the VAD within the cardiac cycle of the assisted heart and to synchronize the alteration of the rotational speed with the heartbeat by at least one sequence of trigger signals (σ(t)) that is related to at least one predetermined characteristic event in the cardiac cycle. Further, a VAD (50) for assistance of a heart comprises the control device (100) for controlling the VAD, wherein the VAD is preferably a non-pulsatile rotational, for example catheter-based, blood pump.

Claims19

Dependent claims

A control device for controlling a rotational speed (nVAD(t)) of a non-pulsatile ventricular assist device (VAD) by an event-based within-a-beat control strategy, wherein the control device is configured to:

alter the rotational speed (nVAD(t)) of the VAD within a cardiac cycle of an assisted heart;
and
synchronize the alteration of the rotational speed (nVAD(t)) with a heartbeat by at least one sequence of trigger signals (σ(t)) that is related to at least one predetermined characteristic event in the cardiac cycle,
wherein the control device is configured to alter the rotational speed (nVAD(t) of the VAD for a predetermined pulse duration (τpulse(h)) or a heart rate dependent pulse duration (τassist(h)) to generate a predetermined desired minimum pulsatility (Δ(h)) in an artery of interest within the cardiac cycle.

1 more element

Dependencies are inferred from the claim text.

Ventricular assist device

Life of this patent

Ventricular assist device

Life of this patent

Abstract

Claims19