公开(公告)号：US20190203720A1

公开(公告)日：2019-07-04

申请号：US16312817

申请日：2017-06-29

Applicant: Berlin Heart GmbH

Inventor： Marcus Granegger ,  Robert Steingräber ,  Jonas Fabian Krone

IPC: F04D7/00 ,  A61M1/10 ,  F04D3/02 ,  F04D13/06 ,  G01N11/02 ,  G01L13/00 ,  H02P6/182 ,  H03H17/02

CPC classification number: F04D7/00 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1036 ,  A61M1/1086 ,  A61M2205/3334 ,  A61M2205/3365 ,  F04D3/02 ,  F04D13/0606 ,  F04D29/048 ,  G01L13/00 ,  G01N11/02 ,  H02P6/182 ,  H03H17/0202 ,  H03H2017/0205

Abstract: Methods and apparatuses for determining operational parameters of a blood pump comprising a rotor which transports the blood are provided. The change in the behaviour of at least one first and one second operational parameter, independently from each other, of the pump, is determined. A determination of the flow through the pump and/or the difference in pressure across the pump and/or the viscosity of the blood takes into account the determined change in behaviour of the at least two operational parameters. A modelling for a dynamic model of the known quantities may be carried out and an estimation method using a Kalman filter may be used.

公开(公告)号：US20180335037A1

公开(公告)日：2018-11-22

申请号：US15983261

申请日：2018-05-18

Applicant: HeartWare, Inc.

Inventor： Charles R. SHAMBAUGH ,  Mustafa Ertan TASKIN ,  Stanley P. MACK ,  Jeffrey A. LAROSE

IPC: F04D13/06 ,  F04D3/02 ,  F04D29/18 ,  F04D29/041 ,  F04D29/047 ,  F04D29/02 ,  A61M1/10

CPC classification number: F04D13/0673 ,  A61M1/1017 ,  A61M1/1036 ,  A61M2205/0272 ,  F04D3/02 ,  F04D29/026 ,  F04D29/041 ,  F04D29/0476 ,  F04D29/181

Abstract: A pump rotor including a hub defining a major longitudinal axis. A magnet is disposed within the hub along the major longitudinal axis. A plurality of rotor blades project outwardly from the hub away from the longitudinal axis and are spaced apart from one another in a circumferential direction around the longitudinal axis. Each of the plurality of rotor blades define a hydrodynamic bearing at an outer extremity thereof remote from the hub. The plurality of rotor blades define a plurality of flow channels. Each of the plurality of rotor blades is configured to drive a fluid through the flow channels upon rotation of the rotor around the axis.

公开(公告)号：US20180326133A1

公开(公告)日：2018-11-15

申请号：US15976719

申请日：2018-05-10

Applicant: TC1 LLC

Inventor： John Freddy Hansen

IPC: A61M1/12 ,  A61M1/10

CPC classification number: A61M1/122 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1036 ,  A61M1/1086 ,  A61M2205/3372 ,  A61M2205/3606

Abstract: Systems, methods, and devices for improved cooling of an implantable blood pump are disclosed herein. The implantable blood pump can include: a pump housing defining an internal volume and including a wall defining a blood flow conduit extending through the pump housing; a rotor including a magnet and located within the blood flow conduit; a magnetic core located in the internal volume and extending circumferentially around the blood flow conduit and the rotor, which magnetic core terminates proximate to the wall; a controller located in the internal volume; and a thermal conductor contacting and preferentially thermally connecting the controller and the magnetic core, wherein the thermal conductor is electrically non-conductive.

公开(公告)号：US20180311424A1

公开(公告)日：2018-11-01

申请号：US16019205

申请日：2018-06-26

Applicant: TC1 LLC

Inventor： Richard K. Wampler ,  David M. Lancisi

IPC: A61M1/10 ,  F04D29/043 ,  F04D29/047 ,  F04D29/62 ,  F04D29/42 ,  F04D13/06 ,  F04D1/00 ,  F04D29/22 ,  F04D29/041 ,  F16C32/04 ,  F04D29/048

CPC classification number: A61M1/1015 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1017 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  F04D1/00 ,  F04D13/06 ,  F04D13/0666 ,  F04D29/0413 ,  F04D29/043 ,  F04D29/047 ,  F04D29/0473 ,  F04D29/048 ,  F04D29/22 ,  F04D29/426 ,  F04D29/628 ,  F16C32/044 ,  F16C2316/18 ,  Y10S415/90

Abstract: Various “contactless” bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.

公开(公告)号：US09956332B2

公开(公告)日：2018-05-01

申请号：US14192712

申请日：2014-02-27

Applicant: HeartWare, Inc.

Inventor： Jeffrey A. LaRose ,  Charles R. Shambaugh ,  Kartikeyan Trichi ,  Richard A. Marquis ,  Daniel G. White

IPC: A61M1/10 ,  A61M1/12 ,  F04D3/02 ,  F04D29/047

CPC classification number: A61M1/1036 ,  A61M1/1008 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1015 ,  A61M1/1017 ,  A61M1/1029 ,  A61M1/1031 ,  A61M1/1086 ,  A61M1/122 ,  A61M1/125 ,  F04D3/02 ,  F04D29/0476

Abstract: An axial-flow blood pump for pumping blood includes a substantially cylindrical outer enclosure. A tubular housing concentric with and located within the outer enclosure has at one end an inlet and at an opposite end an outlet. A motor stator is concentric with and located between the outer enclosure and the tubular housing. An impeller is concentric with and located within the tubular housing. The impeller is suspended in operation by a combination of passive magnetic forces between magnets within the impeller or magnetized regions of the impeller and the motor stator and hydrodynamic thrust forces generated as blood flows between the tubular housing and a plurality of hydrodynamic thrust bearing surfaces located on the impeller. A volute may be in fluid-tight connection with the outlet of the tubular housing for receiving blood in the axial direction and directing blood in a direction normal to the axial direction. The volute has a flow-improving member extending axially from the volute and into and coaxially with the tubular housing.

公开(公告)号：US20180110909A1

公开(公告)日：2018-04-26

申请号：US15791573

申请日：2017-10-24

Applicant: HeartWare, Inc.

Inventor： Jeffrey A. LaROSE ,  Gill B. BEARNSON

IPC: A61M1/10

CPC classification number: A61M1/1036 ,  A61M1/1012 ,  A61M1/125

Abstract: A housing having an interior and an exterior. A pump rotor is configured to be received within the interior of the housing, the pump rotor includes a magnet. A stator having a delivery configuration and an operative configuration is included, the stator in the delivery configuration has a delivery diameter, the stator in the operative configuration being configured to be disposed around the exterior of the housing and to form an assembled pump having a diameter greater than the delivery diameter.

公开(公告)号：US09901666B2

公开(公告)日：2018-02-27

申请号：US15214099

申请日：2016-07-19

Applicant: Thoratec Corporation

Inventor： Christopher J. Cotter

IPC: A61M1/12 ,  A61M1/10

CPC classification number: A61M1/1086 ,  A61M1/1005 ,  A61M1/101 ,  A61M1/1015 ,  A61M1/1031 ,  A61M1/1036 ,  A61M1/122 ,  A61M2205/3317 ,  A61M2205/3334 ,  A61M2205/3365 ,  A61M2205/8212

Abstract: Methods and apparatus for estimating flow rate in a blood circulation assist system employing impeller eccentricity. A method includes magnetically rotating an impeller within a blood flow channel of a blood pump. The impeller is levitated within the blood flow channel transverse to the impeller axis of rotation. A rotational speed for the impeller is determined. At least one impeller transverse position parameter is determined. The at least one impeller transverse position parameter is based on at least one of (1) an amount of a bearing current that is used to levitate the impeller transverse to the impeller axis of rotation, and (2) a position of the impeller within the blood flow channel transverse to the impeller axis of rotation. A flow rate of blood pumped by the blood pump is estimated based on the impeller rotational speed and the at least one impeller transverse position parameter.

公开(公告)号：US09889242B2

公开(公告)日：2018-02-13

申请号：US14985161

申请日：2015-12-30

Applicant: AIS GMBH AACHEN INNOVATIVE SOLUTIONS

Inventor： Joachim Georg Pfeffer ,  Thomas Schmitz-Rode ,  Rolf W. Gunther

IPC: A61M1/10 ,  A61B17/3207 ,  A61M1/12

CPC classification number: A61M1/1024 ,  A61B17/320758 ,  A61B2017/320775 ,  A61M1/101 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/102 ,  A61M1/1029 ,  A61M1/1031 ,  A61M1/1034 ,  A61M1/1036 ,  A61M1/1086 ,  A61M1/122 ,  A61M1/125

Abstract: The catheter device comprises a motor located at the proximal end of the catheter device and a drive shaft, extending from the proximal end section to the distal end section of the catheter device, for driving a rotating element located at the distal end of the catheter device. The catheter device also comprises a hose-like catheter body which encompasses the drive shaft and extends from the proximal end section to the distal end section of the catheter device. At the proximal end of the catheter device, the drive shaft is connected to a motor by a clutch. The clutch is a magnetic clutch with a proximal and a distal magnet unit. The proximal magnet unit is connected to the motor and the distal magnet unit to the drive shaft. The distal magnet unit is mounted fluid-tight in a clutch housing. The proximal end of the catheter body makes a fluid-tight connection with the clutch housing.

公开(公告)号：US20170361001A1

公开(公告)日：2017-12-21

申请号：US15187033

申请日：2016-06-20

Applicant: Terumo Cardiovascular Systems, Inc.

Inventor： Timothy John Canatella ,  Gregory Peter Muennich ,  Luke Powers

IPC: A61M1/10 ,  F04D29/42 ,  F04D13/02 ,  A61M1/16 ,  F04D1/00 ,  A61M1/36 ,  F04D29/62 ,  F04D29/24

CPC classification number: A61M1/3666 ,  A61M1/1012 ,  A61M1/1013 ,  A61M1/1036 ,  A61M2207/00 ,  F04D13/024 ,  F04D13/026 ,  F04D29/2261 ,  F04D29/2266 ,  F04D29/426 ,  F04D29/628

Abstract: Extracorporeal circuit devices can be used for on-pump open-heart surgery to support surgical procedures such as coronary artery bypass grafting. In some cases, a centrifugal pump is used as part of an extracorporeal circuit. Centrifugal pump heads are described herein that induce flow on two sides of an impeller plate, and that can be conveniently mechanically assembled.

公开(公告)号：US09759229B2

公开(公告)日：2017-09-12

申请号：US13695921

申请日：2011-04-29

Applicant: Robert Baumgartner ,  Benjamin Mattern ,  Andreas Henseler

Inventor： Robert Baumgartner ,  Benjamin Mattern ,  Andreas Henseler

IPC: A61M1/10 ,  F04D29/42 ,  F04D29/58 ,  F04D13/06

CPC classification number: F04D29/426 ,  A61M1/101 ,  A61M1/1013 ,  A61M1/1015 ,  A61M1/1036 ,  A61M1/122 ,  F04D13/0633 ,  F04D29/588

Abstract: A blood pump includes a rotor mounted in a pump housing via a bearing. The housing includes a metal rod extending from the outer wall of the housing towards the inner side of the housing. The rod allows dissipating heat and has a stabilizing action.