公开(公告)号：US20180085507A1

公开(公告)日：2018-03-29

申请号：US15710323

申请日：2017-09-20

Applicant: HEARTWARE, INC.

Inventor： Fernando CASAS ,  Carlos REYES ,  Justin WOLMAN

IPC: A61M1/10 ,  A61M1/12

CPC classification number: A61M1/1086 ,  A61M1/1008 ,  A61M1/101 ,  A61M1/1036 ,  A61M1/1053 ,  A61M1/122 ,  A61M1/127

Abstract: A ventricular assist device includes a pump configured to pump blood of a patient. A motor is configured to operate the pump. First, second, and third conductors are coupled to the motor and are configured to supply electric current from a power supply to the motor in first, second, and third phases, respectively. A controller is configured to operate the motor using a Field Oriented Control (FOC) method, and if one from the group consisting of first, second and third conductors becomes unable to supply electric current to the motor, the controller continues to operate the motor using the FOC method using the phases of the two conductors that are able to supply electric current to the motor.

公开(公告)号：US20180085505A1

公开(公告)日：2018-03-29

申请号：US15711532

申请日：2017-09-21

Applicant: HeartWare, Inc.

Inventor： Fernando CASAS

IPC: A61M1/10 ,  A61M1/12

Abstract: A blood pump has an inner housing and an actuator at least partially surrounded by the inner housing which is configured to drive a flow of blood within the body. An electronic component associated with a surface of the housing includes one or more thin film active electronic devices which implement one or more transducers configured to generate a signal based on movement associated with operation of the blood pump. An electromagnetic stator at least partially surrounds the inner housing and is configured to be magnetically coupled with the actuator in an energized state of the electromagnetic stator, wherein the electromagnetic stator may overlie at least a portion of the electronic component.

公开(公告)号：US20180001005A1

公开(公告)日：2018-01-04

申请号：US15630373

申请日：2017-06-22

Applicant: HeartWare, Inc.

Inventor： Fernando CASAS

IPC: A61M1/10 ,  A61M1/12

CPC classification number: A61M1/1086 ,  A61M1/1036 ,  A61M1/122 ,  A61M2230/005 ,  A61M2230/04 ,  A61M2230/30

Abstract: A signal processing circuit for controlling operation of an implanted ventricular assist device comprising an input module for receiving one or more signals of a patient from one or more sensors. A processor for processing the received signals is included, the processor configured to compare a total blood output on a left side of the patient's heart with a total blood output on a right side of the patient's heart; determine at least one from the group consisting of the presence of fluid imbalance between the left and right sides of the patient's heart and the absence of fluid imbalance between the left and right sides of the patient's heart based on the comparison; and when the presence of fluid imbalance is determined, control the implanted ventricular device to restore fluid balance between the left and right sides of the patient's heart.