Corporeal Artificial Heart, Heart Assist (e.g., Implantable Blood Pump, Etc.), Control Regulator, Or Power Supply Therefor, Or Method Of Operation Therefor Patents (Class 623/3.1)
  • Patent number: 11596783
    Abstract: Methods and devices for a self-contained device including a hydraulic motor and a hydraulic pump. Preferably, the motor is incorporated either within the interior of the pump, on the exterior of the pump, or a combination of the two. The pump increases the kinetic energy of the fluid by centrifugal means, and in some embodiments is a viscous impeller pump. Applications include building flow systems, industrial processes, and biological circulatory systems.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: March 7, 2023
    Assignee: Indiana University Research & Technology Corporation
    Inventor: Mark D. Rodefeld
  • Patent number: 11555539
    Abstract: An application, in particular for motor vehicle closing devices. The basic design of the motor vehicle has an electric motor and an actuating element which is acted upon by the electric motor directly or indirectly via a powertrain. The powertrain is provided with at least one Evoloid toothing. According to the invention, a drive shaft of the electric motor is equipped with an Evoloid pinion which meshes with an Evoloid output gear at the input of the powertrain, thereby directly producing the Evoloid toothing.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: January 17, 2023
    Assignee: Kiekert AG
    Inventors: Claus Töpfer, Winfried Schlabs, Tim Sonnenschein, Benjamin Djedovic
  • Patent number: 11229784
    Abstract: Devices for moving blood within a patient, and methods of doing so. The devices can include a pump portion that includes an impeller and a housing around the impeller, as well as a fluid lumen. The impeller can be activated to cause rotation of the impeller and thereby move fluid within the fluid lumen.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 25, 2022
    Inventors: Amr Salahieh, Tom Saul, Brady Esch, Anna Kerlo, Daniel Hildebrand, Daniel Varghai
  • Patent number: 11065380
    Abstract: A patient care system is configured for infusing fluid to a patient. The system includes a plurality of modular fluid infusion pumps that each has a connector for connecting to a modular programming unit or to one another. Systems and methods are configured for verifying that the connectors are reliably performing their functions or communicatively connecting the pumps to one another or to the programming unit.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: July 20, 2021
    Assignee: Carefusion 303, Inc.
    Inventor: Andre Gamelin
  • Patent number: 11040188
    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.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: June 22, 2021
    Assignee: TC1 LLC
    Inventor: Christopher J. Cotter
  • Patent number: 10952842
    Abstract: Described embodiments are directed toward prosthetic valves having a support structure and at least one leaflet. The leaflet comprises means for allowing fluid that is behind the leaflet to pass through to the front of the leaflet when the leaflet is not in the closed position. The prosthetic valve includes a leaflet moveable between an open position that permits antegrade flow through the prosthetic valve and a closed position that prevents regurgitant flow through the prosthetic valve, the leaflet having an aperture or gap, or a separation of portions of the leaflet to allow a flow or exchange of fluid between a front and back of the leaflet, when the leaflet is not in the closed position.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: March 23, 2021
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Kyle W Colavito, Dustin V Dienno, Logan R Hagaman, Cody L Hartman, Sudeep Sastry
  • Patent number: 10926007
    Abstract: Described herein are devices, systems, and methods for generating a variable liquid vacuum with an accompanying stable gas flow rate. In particular, when a suction device suctions a liquid and gas mixture it is advantageous to provide a variable vacuum or vacuum to apply to the liquid component while the flow rate of the gas stays constant or essentially constant.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: February 23, 2021
    Inventors: Noah Mark Minskoff, James Jackson, Elisabeth Jacques Leeflang, Aaron Olafur Laurence Philippsen
  • Patent number: 10820907
    Abstract: An occluder for occluding a passage in a body, especially in a left atrial appendage (LAA), comprises elongate members having a first end and a second end, the ends being held in or attached to holders, wherein the elongate members extend independently from each other between the holders and wherein the elongate members are collectively enveloped by at least one jacket. The jacket restricts a bending motion of the elongate members when their first ends are approximated to their second ends by moving the two holders relatively to each other. The occluder uses an expanding structure which can be easily handled whereby the movement of the elongate members is restricted by at the jackets which envelop the elongate members. At least the elongate members can be made of bioresorbable material.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: November 3, 2020
    Assignee: Carag AG
    Inventors: Andreas Mellmann, Jérôme Bernhard
  • Patent number: 10792405
    Abstract: A ventricular assist system and a blood pump controller including a blood pump usable in a state where a first slide surface and a second slide surface are brought into contact with each other, and a cool sealing liquid is supplied to a gap formed between the first slide surface and the second slide surface; a first sub controller having a first cool sealing liquid reservoir, a cool sealing liquid pump, a first pipe joint upstream side, and a fourth pipe joint downstream side; and a second sub controller having a blood pump drive circuit, a battery, a first pipe joint downstream side, a second pipe joint upstream side, a third pipe joint downstream side, and a fourth pipe joint upstream side. The first sub controller and the second sub controller are detachably connected by a first pipe joint and a fourth pipe joint.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 6, 2020
    Inventors: Nozomi Koike, Shinji Kobayashi, Hideki Kanebako
  • Patent number: 10695474
    Abstract: Apparatus for determining opening of an aortic valve of a biological subject, the apparatus including an electronic processing device that determines a pump speed of a ventricular assist device that is assisting cardiac function of the biological subject, analyses the pump speed to determine a pump speed indicator at least partially indicative of changes in pump speed and uses the pump speed indicator to determine an opening indicator indicative of opening of the aortic valve.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 30, 2020
    Assignees: St Vincent's Hospital Sydney Limited, Medical University of Vienna
    Inventors: Marcus Granegger, Francesco Moscato, Heinrich Schima, Christopher Simon Hayward
  • Patent number: 10064612
    Abstract: An asymmetric occlusion device for occluding an opening in a body tissue where part of the opening is defined by a partial inadequate rim. The asymmetric occlusion device includes a waist portion having a distal end extending to a proximal end. The waist portion is of non-woven material extending around a longitudinal axis opening. The occlusion device further includes a pair of asymmetric occluder disks attached to the waist. The asymmetric distal and proximal occluder disks are formed of shape memory material. The asymmetric occluder disks include a short arm extending from the waist and an extended arm extending from the waist. The extended arm exceeds the length of the first short arm. The density of the first short arm exceeds the density of the second extended arm.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: September 4, 2018
    Assignee: Occlutech Holding AG
    Inventors: Elaheh Malakan Rad, Ziyad Mousa Hijazi
  • Patent number: 9649097
    Abstract: An Occluder for occluding a passage in a circulatory system comprises at least one occluding body (4), for occluding the passage, an expanding unit (1) comprising at least one fixation structure for fixing the occluding body (4, 5) within the passage, wherein at least a part of the expanding unit (1) is expanding into said fixation structure thereby expanding the occluding body and a locking unit (2, 3) for locking the expanding unit (1) in its expanded state. The expanding unit (1) comprises a first and a second end and wherein the first end is attached to a first element of the locking unit (2, 3) and the second end is attached to a second element of the locking unit (2, 3), the first and second elements of the locking unit (2, 3) being brought in locking engagement with each other when the occluding body (4, 5) is expanded, wherein the occluder further comprises a jacket (6, 7) which envelops at least a part of the expanding unit (1).
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: May 16, 2017
    Assignee: CARAG AG
    Inventors: Andreas Weishaupt, Jerome Bernhard
  • Patent number: 9242033
    Abstract: Disclosed herein is a fully implantable artificial heart. The use of flat helical springs to align and reciprocate a bellows structure allows the bellows to pump blood, the multiple solenoids with floating magnetized rods and permanent magnet assemblies held by the flat helical springs provide the power. The artificial heart pumps blood with virtually no friction and no parts to wear out. The use of solenoids advantageously move blood in a gentle, controllable manner.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: January 26, 2016
    Assignee: PATENTS PLUS, LLC
    Inventors: Stephen K. Shu, Benton Bejach
  • Patent number: 9125977
    Abstract: Provided is an artificial heart control device for controlling a blood pump which assists flow of blood in a heart, the artificial heart control device including: a timing detection part which is configured to detect reference timing within a cardiac cycle of the heart; and a blood pump control part which is configured to control a rotational speed of the blood pump, wherein the blood pump control part controls, with reference to the reference timing detected by the timing detection part, the rotational speed of the blood pump such that the rotational speed becomes a rotational speed corresponding to a predetermined control pattern. According to the present invention, it is possible to provide an artificial heart control device, an artificial heart system and an artificial heart control method which can provide a load control optimum for the recovery of functions of a patient's own heart.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: September 8, 2015
    Inventors: Takashi Nishimura, Daisuke Ogawa, Tomoya Kitano
  • Patent number: 8986376
    Abstract: A device, a kit and a method are presented for permanently augmenting the pump function of the left heart. The basis for the presented innovation is an augmentation of the physiologically up and down movement of the mitral valve during each heart cycle. By means of catheter technique, minimal surgery, or open heart surgery implants are inserted into the left ventricle, the mitral valve annulus, the left atrium and adjacent tissue in order to augment the natural up and down movement of the mitral valve and thereby increasing the left ventricular diastolic filling and the piston effect of the closed mitral valve when moving towards the apex of the heart in systole and/or away from the apex in diastole.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: March 24, 2015
    Assignee: Synergio AG
    Inventor: Jan Otto Solem
  • Patent number: 8968174
    Abstract: A implantable pump system comprises an implantable pump motor and an external unit. An inverter comprises respective phases couple to the motor via a cable with redundant conductors for each phase. A controller receives power measurements for all the redundant conductors, which are combined and compared in order to detect failures in the non-redundant components within the motor and windings.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: March 3, 2015
    Assignee: Thoratec Corporation
    Inventors: Masamichi Yanai, Tao Zhang
  • Patent number: 8961390
    Abstract: A method of estimating the blood flow rate of a heart ventricle assist device which is positioned externally of, or implanted in, a patient. The assist device comprises a blood pump having a rapidly rotating, electrically powered impeller, and comprises briefly interrupting power to the impeller to cause its rotation to slow. From this, blood viscosity can be estimated, which viscosity is used to obtain real time, estimated blood flow rates and pressure heads. Apparatus for accomplishing this is disclosed.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: February 24, 2015
    Assignee: HeartWare, Inc.
    Inventors: Jeffrey LaRose, Udai Singh
  • Publication number: 20150032207
    Abstract: Disclosed herein are instruments and methods for delivery of substrates, including cell-seeded substrates, to target tissues requiring treatment for various diseases that induce cell death, damage or loss of function. The substrates are configured to provide cells, including stem cells, with a structural support that allows interconnection with and transmission of biological signals between the cells and the target tissue.
    Type: Application
    Filed: April 27, 2012
    Publication date: January 29, 2015
    Inventors: Mark Humayun, Ashish Ahuja, Yu-Chong Tai, Robert Grubbs, Rodrigo Brant, Trent Wells, Lincoln Vallance Johnson, Sherry T. Hikita, David Hinton
  • Patent number: 8920176
    Abstract: A training system comprising a phantom heart, the phantom heart comprising an exterior surface upon which a tubing is topologically arranged in a manner which mimics the placement of the distal LCx, the LAD, the PDA, and the RCA. The tubing is configured to receive a contrast agent received from a power injector. The training system further comprises an airway subsystem which is modeled to represent the trachea, the right bronchus, and the left bronchus, and which is arranged relative to the phantom heart such that a portion of the airway subsystem which approximates the position of the tracheal carina is aligned with a portion of the phantom heart that represents the ascending aorta. The training system further comprises an EKG pulse generator in electrical communication with a computed tomography scanner for purposes of conducting computed tomography angiography of the phantom heart.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: December 30, 2014
    Inventor: Clifford K. Yang
  • Patent number: 8888728
    Abstract: An improved intravascular blood pump and related methods involving the broad inventive concept of equipping the intravascular blood pump with guiding features such that the intravascular blood pump can be selectively positioned at a predetermined location within the circulatory system of a patient.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: November 18, 2014
    Assignee: MAQUET Cardiovascular LLC
    Inventors: Walid N. Aboul-Hosn, William R. Kanz, Bruce A. Baker
  • Patent number: 8869395
    Abstract: A static seal structure for a pump housing includes a support structure, a first sealing element, and a second sealing element. The support structure circumscribes a pump chamber and includes a first sealing surface, an opposing second sealing surface, and a fluid transfer end interposed between the sealing surfaces. The support structure provides a fluid flow path running through the fluid transfer end and into the pump chamber via an inlet bore and from the pump chamber back through the fluid transfer end via an outlet bore. The first sealing element is disposed on the first sealing surface, and the second sealing element is disposed on the second sealing surface. The sealing elements are configured for forming sealing interfaces in the pump housing, establishing a static seal that isolates the pump chamber from an environment external to the fluid pump housing.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: October 28, 2014
    Assignee: Vitalmex Internacional S.A. de C.V.
    Inventor: Francisco Javier Tovar Lopez
  • Patent number: 8870738
    Abstract: A cardiac function variation evaluation apparatus includes: a continuous flow type auxiliary artificial heart 20 connected to a ventricle (10A); a pressure sensor 30 for detecting ventricle (10A) internal pressure; and means (a personal computer 40) for evaluating contractile variation of the ventricle, to which the auxiliary artificial heart 20 is connected, based on internal area APMp of a closed-loop of a relationship between the ventricle internal pressure detected by the pressure sensor 30 and a consumption power of the auxiliary artificial heart 20. Thus, the contractile variation of the ventricle, to which an auxiliary artificial heart is connected, can be continuously evaluated not by use of an ultrasonic echo apparatus or a conductance catheter but by use of a non-invasive method.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: October 28, 2014
    Assignee: Reinheart GmbH
    Inventors: Setsuo Takatani, Yoshimasa Yokoyama, Thomas Schmitz-Rode, Ulrich Steinseifer
  • Patent number: 8864644
    Abstract: A ventricular assist device incorporating a rotary pump such as a rotary impeller pump implantable in fluid communication with a ventricle and an artery to assist blood flow from the ventricle to the artery. The device includes a pump drive circuit supplying power to the pump, one or more sensors for sensing one or more electrophysiological signals such as electrogram signals in and a signal processing circuit connected to the sensors and to the pump drive circuit. The signal processing circuit is operative to detect the sensor signals and control power supplied to the pump from the pump drive circuit so that the pump runs in a pulsatile mode, with a varying speed synchronized with the cardiac cycle. When an arrhythmia is detected, the pump drive circuit may also run the pump in an atrial arrhythmia mode or a ventricular arrhythmia mode different from the normal pulsatile mode.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 21, 2014
    Assignee: HeartWare, Inc.
    Inventor: Barry Yomtov
  • Patent number: 8858489
    Abstract: Various embodiments of the present invention provide a conduit device including an attaching device configured for defining a helical pathway through a tissue wall and complementary ring in cooperation for securing the device within an aperture defined in the tissue wall. Some embodiments of the present invention further provide a system for implanting a conduit device in a tissue wall. More specifically, some embodiments provide a system including a coring device for defining an aperture in a tissue by removing and retaining a tissue core and securely implanting a conduit device therein so as to provide fluid communication between a first and second surface of the tissue wall via the conduit device.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 14, 2014
    Assignees: Emory University, Georgia Tech Research Corporation
    Inventors: Thomas A. Vassiliades, Ajit Yoganathan, Jorge Hernan Jimenez
  • Patent number: 8852072
    Abstract: A ventricular assist device includes a pump such as an axial flow pump, an outflow cannula connected to the outlet of the pump, and an anchor element. The anchor element is physically connected to the pump, as by an elongate element. The pump is implanted within the left ventricle with the outflow cannula projecting through the aortic valve but desirably terminating short of the aortic arch. The anchor element is fixed to the wall of the heart near the apex of the heart so that the anchor element holds the pump and outflow cannula in position.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: October 7, 2014
    Assignee: HeartWare, Inc.
    Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Steve A. White, Daniel Tamez
  • Patent number: 8834343
    Abstract: A heart support device for pulsatile delivery of blood comprising a first and a second ventricle and a pump. Both ventricles comprises a fluid chamber and a blood-conveying chamber, wherein each fluid chamber can be filled with a fluid or emptied by way of the pump in such a way that an expansion or contraction of the fluid chamber occurs. In an expansion of the fluid chamber of a ventricle, a compression of the blood-conveying chamber of the same ventricle takes place, wherein a rigid pressure plate is disposed between a fluid chamber and the respective blood-conveying chamber, said pressure plate being able to move in the direction of the respective blood-conveying chamber.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: September 16, 2014
    Assignee: Deutsches Zentrum Fur Luft-Und
    Inventors: Bernhard Vodermayer, Harald Wagner, Wolfgang Schiller, Thomas Schmid
  • Patent number: 8834344
    Abstract: A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: September 16, 2014
    Assignee: Maquet Cardiovascular LLC
    Inventors: Walid Najib Aboul-Hosn, Jodi Akin, Michael Guidera, William R. Kanz, Robert G. Matheny
  • Patent number: 8814543
    Abstract: The invention relates to a conveying device for conveying a fluid in a conveying direction having one or more drive bodies which can be driven in an oscillating manner by means of a drive system transversely to the conveying direction. An acceleration of the fluid is achieved by a corresponding movement in translation or by a partially pivoting movement of the drive bodies in the manner of the fin principle known from biology (e.g. aerodynamics and hydrodynamics).
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: August 26, 2014
    Assignee: ECP Entwicklungsgesellschaft mbH
    Inventor: Reiner Liebing
  • Patent number: 8790399
    Abstract: The present invention provides a total artificial heart system for auto-regulating flow and pressure balance. In one embodiment the system comprises an atrial reservoir comprising inlets and outlets connectable to a mammalian cardiovascular system and at least first and second continuous pumps connected to the atrial reservoir. In further embodiments, the system comprises an atrial reservoir comprising at least two atrial chambers, and a means for transmitting fluid pressure between the atrial chambers. The means for transmitting fluid pressure include, but are not limited to a diaphragm, an interatrial window, a flexible membrane, a valve, a filter, or combinations thereof. In another embodiment, the means for transmitting fluid pressure comprises an implantable diaphragm comprising an outer rim attachable to biological tissue and a membrane anchored at its periphery by said outer rim.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: July 29, 2014
    Assignee: Newheart Medical Devices, LLC
    Inventors: Oscar H. Frazier, William Cohn
  • Publication number: 20140194984
    Abstract: A treatment strategy for treatment of elevated pressure in a body conduit, such as a pulmonary vein, with a prosthetic partitioning device for placement in and/or about pulmonary veins is described, as well as delivery systems, and strategies for use thereof. A control device is configured to transmit signals to the prosthetic device to effectuate the repetitive transition between a first, less restricted flow configuration and a second, restricted flow configuration are described. A sensor device may be provided for monitoring physiological parameters of the patient, and can provide signals to the control device for effectuating the transition between the first and second configuration.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 10, 2014
    Inventor: Alexander Shaknovich
  • Patent number: 8747464
    Abstract: A device for assisting and/or taking over the pumping function of the heart, with a multilayer sheathing part configured for compressing the heart at least in certain sections, wherein the sheathing part has at least one stabilization layer for shaping the sheathing part and at least one inner extensible augmentation layer, and wherein at least one cavity is formed between the stabilization layer and the augmentation layer, the cavity being inflatable and deflatable by a fluid, for cyclic compression of the heart. Provision is made for the stabilization layer to be inflatable with a fluid, at least in certain sections, in order to convert the sheathing part from a coiled and/or collapsed insertion state of the device in the body into an arched functional state, wherein the heart, in the functional state of the sheathing part, is at least partially sheathed and/or encompassed.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: June 10, 2014
    Assignee: PPA Technologies GmbH
    Inventors: Thomas Otto, Andreas Klein
  • Patent number: 8734508
    Abstract: A percutaneous pumping system for providing hemodynamic support to a patient includes a pumping sleeve that defines a lumen extending along the length of the pumping sleeve. The pumping sleeve is configured and arranged for insertion into patient vasculature. At least one rotatable magnet is disposed in the pumping sleeve. The at least one first magnet is configured and arranged to be driven to rotate by a magnetic field generated external to the pumping sleeve. At least one impeller is coupled to the at least one magnet. Rotation of the at least one magnet causes a corresponding rotation of the at least one impeller. An anchoring arrangement is coupled to the pumping sleeve. The anchoring arrangement is configured and arranged to anchor the pumping sleeve at a target pumping location when the pumping sleeve is inserted into patient vasculature.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: May 27, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Roger N. Hastings, Michael J. Pikus, Scott Raymond Smith, Leonard B. Richardson, Kevin D. Edmunds
  • Patent number: 8721515
    Abstract: An implantable aortic blood pump includes a rigid body having wall extending along a long axis and defining an inflation port portion with an inflation aperture therethrough. The aperture is fluid communication with an inner surface of the body and on a fluid supply, the body is preferably independent of an external brace or an external stiffener, yet still has a cantilevered deformation of less than 8 millimeters in response to a 200 gram weight suspended from a front body edge. A deflecting structure of a membrane deflects in response to fluid pressure so as to pump blood when the pump is secured to a subject aorta.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: May 13, 2014
    Assignee: L-Vad Technology, Inc.
    Inventors: Robert M. Smith, Valluvan Jeevanandam, Allen B. Kantrowitz, Paul S. Freed, Jean Kantrowitz
  • Patent number: 8721719
    Abstract: A blood pump controller includes a microcontroller and a communication interface. The microcontroller is configured to communicate with various types of blood pump communication modules. The microcontroller is further configured to determine, based on communication with a particular type of blood pump communication module, the particular type of blood pump communication module communicated with. The microcontroller is further configured to select, based on the determination of the particular type of blood pump communication module, control logic used to control the particular type of blood pump communication module. The microcontroller is further configured to generate, based on the selected control logic, commands for controlling the blood pump communication module. The communication interface is configured to connect the microcontroller to the particular type of blood pump communication module.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Thoratec Corporation
    Inventor: David J. Burke
  • Publication number: 20140128967
    Abstract: Miniature axial flow pumps are implanted inside the heart or major arteries to provide hemodynamic support. These pumps commonly utilize tubular blood conduit tubes to transport blood across the aortic valve. The valve leaflets themselves are very thin and flexible, and will seal against the conduit if it is centered within the valve orifice. If the conduit is not centered, a leaflet can be pushed to the side of the aorta, preventing the leaflets from sealing and providing a path for backflow. If the blood flow conduit remains pushed against the side of the valve for a long period of time, thrombus may form in the crevice between the conduit and the aorta, causing serious thromboembolic events such as stroke, if the thrombus breaks free. The present invention provides a conduit support device that retains the conduit centered within the annulus of the natural heart valve.
    Type: Application
    Filed: November 5, 2012
    Publication date: May 8, 2014
    Inventor: Robert Jarvik
  • Patent number: 8715344
    Abstract: A wholly implantable non-natural heart for humans includes a pumping unit, a power generating unit, and a controller. An I beam type chassis with matching holes is provided for supporting valve mounting bodies of the non-natural heart.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: May 6, 2014
    Inventor: Leonard D. Amalaha
  • Patent number: 8702793
    Abstract: Disclosed is an implantable one-piece heart prosthesis having a driving artificial ventricle and a driven artificial ventricle. A main actuator is configured to transmit to the driving artificial ventricle diastolic and systolic flow rates having desired respective values for the driving artificial ventricle. An auxiliary actuator is configured to transmit to the driven artificial ventricle correction systolic and diastolic flow rates that correct the systolic and diastolic flow rates transmitted by the main actuator to the driven artificial ventricle.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: April 22, 2014
    Assignee: Carmat
    Inventors: Marc Grimme, Jean-Elie Gourgues, Alain Carpentier, Claude Wartelle
  • Patent number: 8696745
    Abstract: The present invention relates to an implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle, said device comprising at least one pump device comprising: a first part having a first surface, and a second part having a second surface. The first part is displaceable in relation to the second part and said first and second surfaces abut each other, at least partially. The second part exerts, directly or indirectly, force on an external part of said heart muscle.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: April 15, 2014
    Assignee: Kirk Promotion Ltd.
    Inventor: Peter Forsell
  • Patent number: 8684906
    Abstract: A cardiovascular device (11), adapted to be fitted into a cardiac ventricular cavity (2) having a volume with blood flowing therethrough, which is bounded by walls (8) and has a larger longitudinal dimension (D1) and a smaller transverse dimension (D2). The device includes a diaphragm (16) that can be disposed in the ventricular cavity (2) substantially transverse to the larger longitudinal dimension (D1), in such an arrangement as to reduce ventricular volume, the diaphragm (16) having a peripheral edge (15) which can be sealingly engaged with the ventricle walls (8) and being adapted to be alternately driven between an active blood pushing displacement and an inactive return displacement.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: April 1, 2014
    Inventor: Roberto Parravicini
  • Patent number: 8679177
    Abstract: A method of implanting a blood pump system in a patient requiring treatment includes creating an opening in an epicardium of a heart to access an interior chamber of the heart and implanting a blood pump such that an inlet port of a pump housing is in fluid communication with the interior chamber of the heart through the opening. The pump housing has a first external surface adjacent to the inlet port such that it is substantially adjacent to the epicardium of the heart when implanted. In some embodiments, a first external surface contacts the epicardium when implanted. The blood pump is then secured to the exterior wall of the heart. In some embodiments, the blood pump is secured using a mounting cuff.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: March 25, 2014
    Assignee: Thoratec Corporation
    Inventor: Kevin Bourque
  • Patent number: 8663673
    Abstract: The present invention relates to devices, articles, coatings, and methods for controlled active agent release and/or for providing a hemocompatible surface. More specifically, the present invention relates to copolymer compositions and devices, articles, and methods regarding the same for controlled active agent release. In an embodiment, the present invention includes a copolymer composition. The copolymer composition can include a copolymer and an active agent. In an embodiment, the copolymer includes an effective portion of a monomeric unit including a polar moiety. The active agent can be polar. The active agent can be charged. The active agent can be non-polar. In an embodiment, the copolymer composition includes a random copolymer. In an embodiment, the random copolymer includes butyl methacrylate-co-acrylamido-methyl-propane sulfonate copolymer, which can provide reduced platelet adhesion.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: March 4, 2014
    Assignee: Surmodics, Inc.
    Inventors: Timothy M. Kloke, Robert W. Hergenrother, Laurie R. Lawin
  • Patent number: 8657873
    Abstract: A system for improving cardiac function is provided. A foldable and expandable frame having at least one anchoring formation is attached to an elongate manipulator and placed in a catheter tube while folded. The tube is inserted into a left ventricle of a heart where the frame is ejected from the tube and expands in the left ventricle. Movements of the elongate manipulator cause the anchor to penetrate the heart muscle and the elongate manipulator to release the frame. The installed frame minimizes the effects of an akinetic portion of the heart forming an aneurysmic bulge.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: February 25, 2014
    Assignee: CardioKinetix, Inc.
    Inventors: Alexander Khairkhahan, Hugh R. Sharkey, Serjan D. Nikolic
  • Patent number: 8657874
    Abstract: A method is provided of controlling a pump including a electrical motor coupled to a rotor which carries first and second impellers at opposite ends thereof. The method includes: (a) driving the rotor using the motor, so as to circulate fluid from the first impeller through a first fluid circuit, the second impeller, a second fluid circuit, and back to the first impeller; (b) determining a resistance of the first fluid circuit, based on a first motor parameter; (c) determining a flow rate through the first fluid circuit based on a second motor parameter; and (d) varying at least one operational parameter of the pump so as to maintain a predetermined relationship between the flow rate and the resistance of the first fluid circuit.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: February 25, 2014
    Assignee: Cleveland Clinic Foundation
    Inventors: David Horvath, Alex Massiello, Leonard A. R. Golding, Barry Kuban
  • Patent number: 8657875
    Abstract: At least one aspect is directed to a totally artificial heart, and at least another aspect is directed to a method of controlling blood flow in a patient. The totally artificial heart may include a first rotary pump having an input to receive blood and an output to provide blood to a patient's lungs, a second rotary pump having an input to receive blood and an output to provide blood to the patient's body, a first sensor associated with the first rotary pump, a second sensor associated with the second rotary pump, and a control system coupled to the first sensor, the second sensor, the first rotary pump and the second rotary pump and configured to control characteristics of the first rotary pump and the second rotary pump based on signals received from at least one of the first sensor and the second sensor such that an average flow of blood through the second rotary pump is greater than an average flow of blood through the first rotary pump.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: February 25, 2014
    Assignee: Abiomed, Inc.
    Inventors: Robert T. V. Kung, Farhad Zarinetchi, Robert M. Hart
  • Patent number: 8649853
    Abstract: Systems and methods to monitor cardiac function using information indicative of lead motion are described. In an example, a system including an implantable medical device can include a receiver circuit configured to be electrically coupled to conductor comprising a portion of an implantable lead and be configured to obtain information indicative of a movement of the implantable lead due at least in part to a motion of a heart. The system can include a sensing circuit configured to obtain information indicative of cardiac electrical activity. The system can include a processor circuit configured to construct a template representative of a contraction of the heart, where the template can be constructed using the information indicative of the movement of the implantable lead due at least in part to the motion of the heart during the contraction, and using the information indicative of the cardiac electrical activity sensed during the contraction.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: February 11, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Robert J. Sweeney, Allan C. Shuros, Krzysztof Z. Siejko, David C. Olson, Frank Ingle
  • Patent number: 8641594
    Abstract: One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: February 4, 2014
    Assignee: Heartware, Inc.
    Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Daniel G. White, Richard A. Marquis, Steven A. White, Palanivelu Thyagarajan
  • Patent number: 8617239
    Abstract: The invention refers to a catheter pump to be positioned in the ascending aorta (11) near the aortic valve (10) of a human being, comprising an elongated sleeve 6 with a drive cable (5) extending through the sleeve and connectable at its proximal end to an external drive source and a drive rotor near the distal end of the drive cable (5) mounted on a drive shaft (4) being connected with the drive cable (5), wherein the drive rotor consist of a propeller (3) being enclosed in a cage (2) and wherein the propeller (3) and the cage (2) are foldable from an insertion position close to the drive shaft (4) to an expanded working position, characterized by means (7, 7a, 2a, 19) for anchoring the drive rotor (3) in the ascending aorta (11) near the aortic valve (10) after insertion. The invention also refers to a method to position the pumping means of a catheter pump in the ascending aorta (11) just above the aortic valve (10).
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: December 31, 2013
    Assignee: Cardiobridge GmbH
    Inventor: Oeyvind Reitan
  • Publication number: 20130345804
    Abstract: An auxiliary artificial heart pump drive device for driving an auxiliary artificial heart pump includes first and second pump control parts which are arranged in duplexed configuration. Each pump control part controls the auxiliary artificial heart pump by outputting a drive signal to the auxiliary artificial heart pump. Each pump control part has a means which, when a failure is detected in the pump control part, electrically cuts off a path through which the drive signal is outputted to the auxiliary artificial heart pump. According to the present invention, it is possible to provide an auxiliary artificial heart pump drive device and an auxiliary artificial heart system which exhibit high availability even when a serious failure occurs by any chance without duplexing a pump device.
    Type: Application
    Filed: August 23, 2013
    Publication date: December 26, 2013
    Applicant: Sun Medical Technology Research Corporation
    Inventor: Hideki KANEBAKO
  • Patent number: 8608798
    Abstract: A total artificial heart having a rotor with an impeller, wherein the rotor is mounted within a pump housing on a hollow shaft. The rotor is magnetically driven to produce rotary motion of the impeller for pumping blood. The motor is disposed within the pump housing such that axial translation within the housing acts as a shuttle valve to alternate flow between pulmonary and systemic circulation.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: December 17, 2013
    Inventor: Richard Wampler
  • Publication number: 20130331934
    Abstract: An artificial heart with a centrifugal pump is disclosed. In one embodiment, the artificial heart includes an impeller disposed in a housing. The impeller is configured to rotate to circulate blood through the housing. The impeller may include a set of blades on a first side of the impeller and a set of vanes on a second side opposite the first. The blades on the first side and the vanes on the second side allow blood circulation from both the first and the second sides of the impeller. The artificial heart may also or instead include a diffuser with adjustable vanes that enable variation in the output characteristics of the artificial heart pump. Various other artificial hearts, pumps, systems, and methods, including control systems and methods, are also disclosed.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 12, 2013
    Inventors: Omar M. Kabir, Ronald W. Webb, Mark A. Patterson, Gerrit M. Kroesen, John C. Etcheverry, Daniel B. Baxter, Robert Small