公开(公告)号：US20230355958A1

公开(公告)日：2023-11-09

申请号：US18312032

申请日：2023-05-04

Applicant: Abiomed, Inc.

Inventor： Adrienne Lee ,  Margi Patel ,  Qing Tan

IPC: A61M60/554 ,  A61M60/13 ,  A61M60/216 ,  A61M60/531 ,  A61M60/422

CPC classification number: A61M60/554 ,  A61M60/13 ,  A61M60/216 ,  A61M60/531 ,  A61M60/422 ,  A61M2205/3331 ,  A61M2205/18

Abstract: Methods and apparatus for determining whether a circulatory support device is correctly positioned in a heart of a patient are provided. The method comprises receiving a motor current signal from a motor of the circulatory support device, receiving a pressure signal from a pressure sensor arranged on the circulatory support device, generating a normalized motor current signal based, at least in part, on the pressure signal, determining a pulsatility of the normalized motor current signal, determining whether the circulatory support device is correctly positioned in the heart of the patient based, at least in part, on the pulsatility of the normalized motor current signal, and outputting an alarm when it is determined that the circulatory support device is not correctly positioned in the heart of the patient.