Physiologically responsive VAD

Patent metadata

Field	Value
Publication number	US-9833552-B2
Application number	US-201615278851-A
Country	US
Kind code	B2
Filing date	Sep 28, 2016
Priority date	Jan 19, 2010
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A ventricular assist device incorporating a rotary pump, such as a rotary impeller pump is implantable in fluid communication with a ventricle and an artery to assist blood flow from the ventricle to the artery. The device includes a pump drive circuit supplying power to the pump, one or more sensors for sensing one or more electrophysiological signals such as electrogram signals in and a signal processing circuit connected to the sensors and the pump drive circuit. The signal processing circuit is operative to detect the sensor signals and control power supplied to the pump from the pump drive circuit so that the pump runs in a pulsatile mode, with a varying speed synchronized with the cardiac cycle so that it operates in copulsation or counterpulsation with the cycle. The cardiac cycle for purposes of synchronization can also be based on an average of two or more cardiac cycles.

First claim

The invention claimed is:

1. A ventricular assist device comprising:
a rotary pump configured to be implantable in fluid communication with a ventricle and an artery of a subject to assist blood flow from the ventricle to the artery;
a pump drive circuit for applying power to the pump;
one or more sensors for sensing one or more electrogram signals in a subject; and
a signal processing circuit in communication with the sensors and the pump drive circuit, the signal processin…

Assignees

• Heartware Inc

Inventors

• Yomtov Barry M

Classifications

• A61N1/3627

  Human Necessities · mapped topic

• A61M2230/04

  Human Necessities · mapped topic

• A61M2205/3538

  Human Necessities · mapped topic

• A61M2205/3515

  Human Necessities · mapped topic

• A61M2205/3334

  Human Necessities · mapped topic