公开(公告)号：US11806518B2

公开(公告)日：2023-11-07

申请号：US16952613

申请日：2020-11-19

Applicant: HeartWare, Inc.

Inventor： Christopher M. Michelena ,  David A. Schafir ,  Fernando Casas ,  Mustafa Ertan Taskin

IPC: A61M60/824 ,  F04D7/00 ,  F04D29/18 ,  F04D29/041 ,  F16C27/08 ,  A61M60/148 ,  A61M60/419

CPC classification number: A61M60/824 ,  A61M60/148 ,  A61M60/419 ,  F04D7/00 ,  F04D29/041 ,  F04D29/181 ,  F16C27/08 ,  A61M2205/0266 ,  A61M2205/0294 ,  A61M2205/04 ,  A61M2205/3523 ,  A61M2205/825 ,  A61M2205/8206 ,  F16C2360/00

Abstract: An implantable blood pump includes a tube including an inner wall, and wherein during operation of the blood pump, the impeller rotates within the tube and a distance between the inner wall of the tube and the thrust bearing decreases as a speed of the impeller increases.

公开(公告)号：US20210045639A1

公开(公告)日：2021-02-18

申请号：US17087744

申请日：2020-11-03

Applicant: HeartWare, Inc.

Inventor： Fernando Casas

IPC: A61B5/0205 ,  A61B5/0215 ,  A61B5/00 ,  A61B8/06 ,  A61M1/10 ,  A61M1/12 ,  A61B8/12

Abstract: A blood pump including a housing having an inlet element, the inlet element including a distal portion coupled to the housing and a proximal portion sized to be received within at least a portion of a heart of a patient and a rotor configured to rotate within the housing and impel blood from the heart. At least one pressure sensor is coupled to the proximal portion of the inlet element.

公开(公告)号：US10786612B2

公开(公告)日：2020-09-29

申请号：US16131238

申请日：2018-09-14

Applicant: HeartWare, Inc.

Inventor： Fernando Casas

IPC: A61M1/10 ,  A61M1/12

Abstract: A driveline for an implantable blood pump including a percutaneous connector including an outer tube, the outer tube defining an exterior surface and having a proximal portion and a distal portion opposite the proximal portion, the proximal portion being couplable to the implantable blood pump disposed within a body of a patient and the distal portion being couplable to a controller outside of the body of the patient and at least one electronic instrument coupled to the outer tube and fluidically sealed from the exterior surface.

公开(公告)号：US10744247B2

公开(公告)日：2020-08-18

申请号：US15719719

申请日：2017-09-29

Applicant: HeartWare, Inc.

Inventor： Justin Wolman ,  Carlos Reyes ,  Fernando Casas

IPC: A61M1/10 ,  F04D29/18 ,  F04D27/00 ,  F04D29/02 ,  F04D13/06 ,  C22C5/04 ,  C22F1/14

Abstract: The present invention relates to kits and methods for calibrating a pump through performance of a thermal knockdown process including demagnetization of an impeller of the pump where the impeller is separate from the pump. By heat treating the impeller, a property of magnetic interaction of the pump is reduced in a repeatable manner. A kit includes a pump with impeller, a controller and an oven. The method generally involves an iterative process of testing the pump for a property related to magnetic interaction of the elements of the pump, removing the impeller from the pump, heating the impeller under controlled conditions, then placing the impeller back into the pump to repeat the test performed initially.

公开(公告)号：US10376621B2

公开(公告)日：2019-08-13

申请号：US15630373

申请日：2017-06-22

Applicant: HeartWare, Inc.

Inventor： Fernando Casas

IPC: A61M1/00 ,  A61M1/10 ,  A61M1/12

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.

公开(公告)号：US09492601B2

公开(公告)日：2016-11-15

申请号：US13951302

申请日：2013-07-25

Applicant: HeartWare, Inc.

Inventor： Fernando Casas ,  Carlos Reyes

IPC: A61M1/12 ,  A61M1/10

CPC classification number: A61M1/127 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/122 ,  A61M2205/3334

Abstract: The presence or absence of a suction condition in an implantable blood pump is determined at least in part based on a parameter related to flow, such as a parameter related to thrust on the rotor of the pump. A local extreme of the parameter representing the minimum flow during ventricular diastole in an earlier interval is used to establish a threshold value. A value of the parameter representing the minimum flow during ventricular diastole in a later interval is compared to this threshold. If the comparison indicates a substantial decline in the minimum flow between the earlier and later intervals is associated with a suction condition. During the absence of a suction condition, the threshold is continually updated, so that the system does not indicate presence of a suction condition if the flow decreases gradually.

Abstract translation: 至少部分地基于与流动相关的参数（例如与泵的转子上的推力相关的参数）来确定可植入血液泵中是否存在吸入条件。 使用表示在较早间隔期间心室舒张期期间的最小流量的参数的局部极值来建立阈值。 将表示在稍后间隔中的心室舒张期期间的最小流量的参数的值与该阈值进行比较。 如果比较表明较早和较晚间隔之间的最小流量的显着下降与抽吸条件相关联。 在没有抽吸条件的情况下，阀值不断更新，如果流量逐渐减小，则系统不会指示吸入条件的存在。

公开(公告)号：US11969588B2

公开(公告)日：2024-04-30

申请号：US17356704

申请日：2021-06-24

Applicant: HeartWare, Inc.

Inventor： Mark S. Egler ,  Fernando Casas ,  Carlos Reyes ,  Jeffrey A. LaRose

IPC: A61M60/824 ,  A61M60/148 ,  A61M60/178 ,  A61M60/216 ,  A61M60/419 ,  A61M60/422 ,  A61M60/508 ,  A61M60/82 ,  A61M60/857 ,  A61M60/878

CPC classification number: A61M60/824 ,  A61M60/148 ,  A61M60/178 ,  A61M60/216 ,  A61M60/419 ,  A61M60/422 ,  A61M60/508 ,  A61M60/82 ,  A61M60/857 ,  A61M60/878

Abstract: A method of operating an implantable blood pump having a first stator, a second stator, and an impeller movably disposed there between. The method includes applying a first voltage waveform at first phase to the first stator to generate a magnetic field to rotate the impeller. A second voltage waveform is applied at a second phase shifted from the first phase to the second stator to rotate the impeller, the second voltage waveform is asymmetric to the first voltage waveform.

公开(公告)号：US11826127B2

公开(公告)日：2023-11-28

申请号：US17087744

申请日：2020-11-03

Applicant: HeartWare, Inc.

Inventor： Fernando Casas

IPC: A61B5/0205 ,  A61B5/0215 ,  A61B5/00 ,  A61B8/06 ,  A61B8/12 ,  A61M60/148 ,  A61M60/419 ,  A61M60/857 ,  A61M60/422 ,  A61M60/538 ,  A61M60/515 ,  A61M60/216 ,  A61M60/178

CPC classification number: A61B5/0205 ,  A61B5/02158 ,  A61B5/4836 ,  A61B5/686 ,  A61B8/06 ,  A61B8/12 ,  A61M60/148 ,  A61M60/178 ,  A61M60/216 ,  A61M60/419 ,  A61M60/422 ,  A61M60/515 ,  A61M60/538 ,  A61M60/857 ,  A61B2562/028 ,  A61M2205/3344 ,  A61M2205/3375 ,  A61M2230/30

Abstract: A blood pump including a housing having an inlet element, the inlet element including a distal portion coupled to the housing and a proximal portion sized to be received within at least a portion of a heart of a patient and a rotor configured to rotate within the housing and impel blood from the heart. At least one pressure sensor is coupled to the proximal portion of the inlet element.

公开(公告)号：US11554260B2

公开(公告)日：2023-01-17

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: A61M60/148 ,  A61M60/422 ,  A61M60/178 ,  A61M60/538 ,  A61M60/216 ,  A61M60/50 ,  A61M60/205

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：US11446481B2

公开(公告)日：2022-09-20

申请号：US16405483

申请日：2019-05-07

Applicant: HeartWare, Inc.

Inventor： Justin Wolman ,  Fernando Casas ,  Carlos Reyes ,  Thomas R. Johnson

IPC: A61M60/857 ,  A61M60/50 ,  A61M60/82 ,  A61M60/419

Abstract: A method of controlling an implantable blood pump including a housing having a proximal portion including an inlet, a distal portion including an outlet, and an impeller therein, the method including detecting when a pressure in the housing exceeds a pressure threshold and executing a first vector control command to displace the impeller axially in a distal direction from a primary position to a secondary position different than the primary position in response to the pressure exceeding the pressure threshold.