公开(公告)号：US20190307938A1

公开(公告)日：2019-10-10

申请号：US16359501

申请日：2019-03-20

Applicant: HeartWare, Inc.

Inventor： Carlos REYES ,  Katherine CHORPENNING ,  Antonio Luiz Silva FERREIRA ,  Neethu Lekshmi VASUDEVAN JALAJA ,  Justin WOLMAN ,  Fernando CASAS

IPC: A61M1/10 ,  A61M1/12

Abstract: A method of responding to an adverse event associated with an implantable blood pump including detecting the adverse event, reducing a pump speed of the blood pump relative to a set pump speed in response to the detected adverse event, and determining whether at least one of a group consisting of the adverse event and a second adverse event is present following the reducing of the pump speed of the blood pump. If the at least one of the group consisting of the adverse event and a second adverse event is not present, the method includes increasing the pump speed to the set pump speed and if the at least one of the group consisting of the adverse event and a second adverse event is present while increasing the pump speed to the set pump speed, the method includes reducing the pump speed to a maximum safe operating speed.

公开(公告)号：US20200289730A1

公开(公告)日：2020-09-17

申请号：US16809731

申请日：2020-03-05

Applicant: HeartWare, Inc.

Inventor： Michael BROWN ,  Amy B. CHENG ,  Veronica RAMOS ,  Neethu Lekshmi VASUDEVAN JALAJA ,  Alonso TREJO-MORA

IPC: A61M1/10 ,  A61M1/12

Abstract: A method of predicting an adverse event in a patient having an implantable blood pump including correlating a pulsatility value to a flow trough value associated with the blood pump to determine a flow peak value; dividing the determined flow peak value by a pump current to determine a pulsatility peak value; tracking a first moving average of the pulsatility peak value, the first moving average defining a threshold range; tracking a second moving average of the pulsatility peak value, the second moving average being faster than the first moving average; and generating an alert when the second moving average deviates from the threshold range.

公开(公告)号：US20210154384A1

公开(公告)日：2021-05-27

申请号：US17095096

申请日：2020-11-11

Applicant: HeartWare, Inc.

Inventor： Carlos REYES ,  Neethu Lekshmi VASUDEVAN JALAJA

IPC: A61M1/10 ,  A61M1/12

Abstract: A control circuit for a sensorless implantable blood pump configured to determine mitral valve regurgitation includes processing circuitry configured to generate an estimated blood flow waveform from the sensorless implanted blood pump and generate an alert if between an end period of diastole and a beginning period of systole a measured amplitude of the estimated blood flow waveform does not include an inflection point.