Patents Assigned to Thoratec Corporation
  • Patent number: 10485909
    Abstract: The present disclosure provides an apical connector for use in a heart wall. The apical connector may include a port defining an aperture therethrough, an anchoring device extending distally from the port and configured for advancing at least partially through the heart wall, and a cannula configured for advancing through the aperture of the port and at least partially through the heart wall. The cannula may include a locking tab configured to engage the port and lock the cannula with respect to the port.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: November 26, 2019
    Assignee: Thoratec Corporation
    Inventors: Christopher James Cotter, Cori Grace Pierce, Daniel Harjes, Jorge H. Jimenez, Julien Duhamel, Kaitlyn Nicole Spink, Peter J. Gazzara, III, Kathryn Frederick
  • Publication number: 20180110514
    Abstract: A coupling system includes an applicator tool and an attachment ring mounted on the applicator tool. Clips are contained within the applicator tool and are deployed through the attachment ring in order to anchor the attachment ring to biological tissue. When deployed, tips of the clips follow a curved trajectory through an annular cuff of the attachment ring and through the underlying tissue. The tips loop back out of the tissue and to a location where they are later trapped or clamped by the attachment ring. While the tips are trapped or clamped, the applicator tool cinches the clips by pulling rear segments of the clips. Thereafter, the applicator tool disconnects from the attachment ring which remains anchored to the tissue and serves as a coupling for a cannula. The cannula can have movable lock members that secure it to the attachment ring.
    Type: Application
    Filed: December 21, 2017
    Publication date: April 26, 2018
    Applicant: Thoratec Corporation
    Inventors: Carine Hoarau, Steven H. Reichenbach, J. Donald Hill, George Hsu, Andrew R. Miller, James Badia, Nina Boiadjieva, Shuo-Hsiu Chang, Philip Haarstad, Olga M. Stanescu, Stephen Kenneth Sundquist
  • Patent number: 9872976
    Abstract: A percutaneous cable is attached to a mechanical cardiac pump and is passed through the skin. Sutures can be used to stabilize the cable against movement to prevent disturbing tissue surrounding cable and thereby reduce the incidence of infection. A funnel-shaped tubular device can be used where the cable exits the skin to allow the cable to flex below or near the skin surface as may be desired to accommodate physical activity of a patient. An anchor can be attached to the cable and implanted below the skin surface to stabilize the cable against movement. The anchor can include any one or a combination of a flat mesh material, a bundle of ultrafine filaments, and a barbed filament.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: January 23, 2018
    Assignee: THORATEC CORPORATION
    Inventors: Yi-Ren Woo, Steven H. Reichenbach, Stephen Briana, Kelly Walsh, Kevin Bourque
  • Patent number: 9848870
    Abstract: A coupling system includes an applicator tool and an attachment ring mounted on the applicator tool. Clips are contained within the applicator tool and are deployed through the attachment ring in order to anchor the attachment ring to biological tissue. When deployed, tips of the clips follow a curved trajectory through an annular cuff of the attachment ring and through the underlying tissue. The tips loop back out of the tissue and to a location where they are later trapped or clamped by the attachment ring. While the tips are trapped or clamped, the applicator tool cinches the clips by pulling rear segments of the clips. Thereafter, the applicator tool disconnects from the attachment ring which remains anchored to the tissue and serves as a coupling for a cannula. The cannula can have movable lock members that secure it to the attachment ring.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: December 26, 2017
    Assignee: THORATEC CORPORATION
    Inventors: Carine Hoarau, Steven H. Reichenbach, J. Donald Hill, George Hsu, Andrew R. Miller, James Badia, Nina Boiadjieva, Shuo-Hsiu Chang, Philip Haarstad, Olga M. Stanescu, Stephen Kenneth Sundquist
  • Patent number: 9825471
    Abstract: Systems for tuning a wireless power transfer system are provided, which may include any number of features. In one embodiment, a TET system includes a receive resonator is adapted to be implanted in a human patient and is configured to receive wireless power from a transmit resonator. The system can include a controller configured to identify if a foreign object is interfering with the transmission of power or generating an induced voltage in the receive resonator. The controller can also be configured to control the transmit resonator to phase match with the foreign object. Methods of use are also provided.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 21, 2017
    Assignee: THORATEC CORPORATION
    Inventor: John Freddy Hansen
  • Patent number: 9805863
    Abstract: An improved wireless transmission system for transferring power over a distance. The system includes a transmitter generating a magnetic field and a receiver for inducing a voltage in response to the magnetic field. In some embodiments, the transmitter can include a plurality of transmitter resonators configured to transmit wireless power to the receiver. The transmitter resonators can be disposed on a flexible substrate adapted to conform to a patient. In one embodiment, the polarities of magnetic flux received by the receiver can be measured and communicated to the transmitter, which can adjust polarities of the transmitter resonators to optimize power transfer. Methods of use are also provided.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 31, 2017
    Assignee: Thoratec Corporation
    Inventors: John Freddy Hansen, Ethan Petersen
  • Patent number: 9682180
    Abstract: A ventricular assist system and a method of implanting the system are disclosed. The system can have a pump, an inflow conduit, an outflow conduit, attachment ring, ring clamp, and a valvular structure. The attachment ring can be attached to the apex of the heart. The valvular structure can have a flexible, one-way valve in a rigid housing. The inflow conduit can be passed through the valvular structure and the attachment ring into a beating heart with minimal loss of blood. Devices such as slitting tool, coring knife, and/or C-clamp and use of the devices can form part of the system and method for implanting the ventricular assist device.
    Type: Grant
    Filed: November 14, 2010
    Date of Patent: June 20, 2017
    Assignee: THORATEC CORPORATION
    Inventors: Carine Hoarau, John Duc Nguyen, Steven H. Reichenbach, Ruth Eleanor Costa, James Badia, Donald Lee Hannula
  • Patent number: 9680310
    Abstract: Systems and methods for wireless energy transfer are described. A transmitter unit has a transmitter resonator with a coil that is coupled to a power supply to wirelessly transmit power to a receiver unit. A receiver unit has a receiver resonator with a coil coupled to a device load. The receiver unit can include a ferrite enclosure to prevent transmission of magnetic flux into electronics of the receiver unit, and can include ferrite fins to increase a coupling between the transmitter resonator and the receiver resonator.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: June 13, 2017
    Assignee: Thoratec Corporation
    Inventors: Kenneth Wong, George Chao-chih Hsu, John Duc Nguyen, Carine Hoarau, Steven Reichenbach, Kevin Gerald Heppell
  • Patent number: 9631754
    Abstract: A clamp can be used to further secure the connection between a flexible tube and a tubing connector and to eliminate or diminish fluid stasis near the connection interface. The clamp can include a hollow member having a passageway extending through the hollow member, an internal thread in the passageway, and a clamping surface in the passageway. The passageway is configured to receive the flexible tube. The internal thread is configured to engage the flexible tube and has a first diameter. The clamping surface has a second diameter less than the first diameter. A hub may be used as an adapter between the clamp and the tube.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 25, 2017
    Assignee: Thoratec Corporation
    Inventors: J. Scott Richardson, Barry N. Gellman
  • Publication number: 20170100528
    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 chanber. 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.
    Type: Application
    Filed: December 20, 2016
    Publication date: April 13, 2017
    Applicant: Thoratec Corporation
    Inventors: Richard K. Wampler, David M. Lancisi
  • Publication number: 20170082114
    Abstract: Various “contactless” bearing mechanisms including hydrodynamic, hydrostatic, and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. These design features may be combined. In one embodiment, the pump apparatus includes a rotor having a bore, a ring-shaped upper rotor bearing magnet, and a ring-shaped lower rotor bearing magnet. The bearing magnets are concentric with the bore. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Applicant: Thoratec Corporation
    Inventors: Richard K. Wampler, David M. Lancisi
  • Patent number: 9592397
    Abstract: Thermal management solutions for wireless power transfer systems are provided, which may include any number of features. In one embodiment, an implantable wireless power receiver includes at least one thermal layer disposed on an interior surface of the receiver configured to conduct heat from a central portion of the receiver towards edges of the receiver. The thermal layer can comprise, for example, a copper layer or a ceramic layer embedded in an acrylic polymer matrix. In some embodiments, a plurality of thermal channels can be formed within the receiver to transport heat from central regions of the receiver towards edges of the receiver via free convection. In yet another embodiment, a fluid pipe can be connected to the receiver and be configured to carry heat from the receiver to a location remote from the receiver. Methods of use are also provided.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: March 14, 2017
    Assignee: Thoratec Corporation
    Inventors: John Freddy Hansen, Joseph C. Stark, III
  • Patent number: 9579436
    Abstract: Techniques for mounting a sensor are disclosed. In some implementations, a molded interconnect device carries a sensor for transducing a position of a rotor of the implantable blood pump. The molded interconnect device includes one or more integrated electronic circuit traces configured to electrically connect the Hall sensor with a printed circuit board of the implantable blood pump, and the molded interconnect device is configured to be mounted to the printed circuit board.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: February 28, 2017
    Assignee: THORATEC CORPORATION
    Inventors: Mark McChrystal, Joseph C. Stark, III
  • Patent number: 9583874
    Abstract: Disclosed are systems for wireless energy transfer including transcutaneous energy transfer. Embodiments are disclosed for electrical connections between an implanted wireless receiver and an implanted medical device powered by the receiver. Methods for manufacturing and using the devices and system are also disclosed.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: February 28, 2017
    Assignee: Thoratec Corporation
    Inventors: David Eldridge, Joseph C. Stark, III, Andrew MacDonell, Scott Kramer, Thomas George Kilavos, Fabian Frigon Franco
  • Publication number: 20170043076
    Abstract: The present invention provides a rotary blood pump with both an attractive magnetic axial bearing and a hydrodynamic bearing. In one embodiment according to the present invention, a rotary pump includes an impeller assembly supported within a pump housing assembly by a magnetic axial bearing and a hydrodynamic bearing. The magnetic axial bearing includes at least two magnets oriented to attract each other. One magnet is positioned in the spindle of the pump housing while the other is disposed within the rotor assembly, proximate to the spindle. In this respect, the two magnets create an attractive axial force that at least partially maintains the relative axial position of the rotor assembly. The hydrodynamic bearing is formed between sloping surfaces that form tight clearances below the rotor assembly.
    Type: Application
    Filed: October 26, 2016
    Publication date: February 16, 2017
    Applicant: Thoratec Corporation
    Inventors: Richard K. Wampler, David M. Lancisi
  • Patent number: 9555177
    Abstract: A needle guard is used when suturing the cuff of an attachment ring to the heart. The needle guard is disposed in the attachment ring to prevent other parts of the attachment ring from being punctured by a suturing needle. The needle guard can include one or more grooves to inhibit relative movement between the needle guard and the attachment ring during suturing. The needle guard is removed upon completion of suturing and to allow insertion into attachment ring of an inflow conduit of a heart assist device. An articulated clamp is used to compress the attachment ring into engagement with the inflow conduit. The attachment include an annular rib that grabs the inflow conduit.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: January 31, 2017
    Assignee: THORATEC CORPORATION
    Inventors: Donald Curtis, Alicia Baumberger, John Mark Di Paola, Carine Hoarau, Nathan Harold, Fabian Franco
  • Patent number: 9545467
    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.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: January 17, 2017
    Assignee: Thoratec Corporation
    Inventors: Richard K. Wampler, David M. Lancisi
  • Patent number: 9533082
    Abstract: A blood pump includes a hub having an axis of rotation and a generally cylindrical shape. The hub has an upstream end region, a central region, and a downstream end region, and the hub includes a magnetic material. Blades that are disposed on the downstream end region of the hub extend downstream of the hub.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: January 3, 2017
    Assignee: THORATEC CORPORATION
    Inventors: Steven H. Reichenbach, Stephen G. Briana, William V. Hodges, Eric Lee, Yi-Ren Woo, Onur Dur, David Gary Eldridge, Pieter W. C. J. le Blanc
  • Patent number: 9533083
    Abstract: Various “contactless” bearing mechanisms including hydrodynamic, hydrostatic, and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. These design features may be combined. In one embodiment, the pump apparatus includes a rotor having a bore, a ring-shaped upper rotor bearing magnet, and a ring-shaped lower rotor bearing magnet. The bearing magnets are concentric with the bore. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: January 3, 2017
    Assignee: Thoratec Corporation
    Inventors: Richard K. Wampler, David M. Lancisi
  • Patent number: 9526818
    Abstract: A protective cap for fluidly sealing a connector of a cable is provided. The protective cap includes a flexible body having an interior cavity with a distal opening through which the connector is inserted. The distal opening is defined by an annular ridge that engages a cable portion proximal the connector to fluidly seal the entire connector within the cavity. The body portion may have an oval-shaped cross-section while the interior cavity is cylindrical so that the portions wider portions of the body provide longitudinal rigidity to facilitate installation and removal of the cap by a manual pushing and pulling. A tether may be included to attach the cap to a distal portion of the cable. The protective cap and tether may be integrally formed of a soft, highly flexible material to improve ease of use, biocompatibility and patient comfort.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: December 27, 2016
    Assignee: THORATEC CORPORATION
    Inventors: Keith Hamilton Kearsley, Gabe Wegel, Kathryn B. Frederick, Julien Duhamel, Brian Barber