Patents by Inventor Wolfgang Kerkhoffs

Wolfgang Kerkhoffs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10518011
    Abstract: A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The insertion device includes a shaft having distal and proximal end portions and a plurality of lumens. A first lumen is configured to receive a guidewire and a second lumen is configured to receive a pressurized fluid. A tip connected to the distal end portion of the shaft is configured for insertion into the heart chamber. The tip has a hollow interior communicating with the first shaft lumen. An inflatable member is coupled to the distal end portion of the shaft and includes a hollow interior in fluid communication with the second shaft lumen. The inflatable member is movable between deflated and inflated configurations for releasably securing the insertion device to the inflow cannula.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: December 31, 2019
    Assignee: CircuLite, Inc.
    Inventors: Robert C. Farnan, Oliver Marseille, Wolfgang Kerkhoffs
  • Patent number: 10342905
    Abstract: A fluid flow system for a patient is disclosed. A fluid drive module includes a fluid drive element, a housing, and a chamber located between the housing and the fluid drive element. A controller or control module modifies the speed of the fluid drive element during use, such as to prevent thrombus or otherwise improve flow conditions. Methods of alternating fluid flow are also provided.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: July 9, 2019
    Assignee: CircuLite, Inc.
    Inventors: Wolfgang Kerkhoffs, Oliver Marseille, Michael Martin, Robert C. Farnan, John P. Budris, J. Christopher Flaherty
  • Patent number: 10213536
    Abstract: An implantable connector assembly (14) for communicating an element to an implantable device (12) within a patient (20) comprises a plug (16), a receptacle (18), and a pair of communication structures (72, 108). The plug (16) includes a plunger body (64). The receptacle (18) includes a sleeve (98) and a stopper (114). The sleeve (98) defines an opening (104), and the stopper (114) is resiliently mounted within the sleeve (98) to cover and fluidly seal the opening (104). The pair of communication structures (72, 108) is positioned respectively on the plunger body (64) and the sleeve (98). One of the communication structures (72, 108) connects to a source and the other communication structure (108, 72) connects to the implantable device (12). The plunger body (64) inserts into the sleeve (98) to displace the stopper (114) and couple the pair of communication structures (72, 108) for communication of the element therebetween.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: February 26, 2019
    Assignee: CircuLite, Inc.
    Inventors: Wolfgang Kerkhoffs, Ellen Keysselitz, J. Christopher Flaherty, Josef Weigand
  • Publication number: 20190001034
    Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 3, 2019
    Inventors: Mustafa Ertan TASKIN, Ellen KEYSSELITZ, Wolfgang KERKHOFFS
  • Patent number: 10080826
    Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 25, 2018
    Assignee: HeartWare, Inc.
    Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
  • Publication number: 20180228953
    Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.
    Type: Application
    Filed: August 3, 2016
    Publication date: August 16, 2018
    Inventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
  • Publication number: 20180161487
    Abstract: The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods, and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.
    Type: Application
    Filed: January 20, 2017
    Publication date: June 14, 2018
    Inventors: Oliver Marseille, Wolfgang Kerkhoffs, Ellen Keysselitz
  • Publication number: 20180147334
    Abstract: Devices, systems and methods for establishing a blood flow conduit between a chamber in a heart of a patient and a remote location. A blood inflow cannula having an outer surface and proximal and distal end portions. The distal end portion is configured for insertion into the chamber of the heart. First and second anchor elements have respective maximum width dimensions extending outwardly from the outer surface of the cannula. The first anchor element is positioned more distally than the second anchor element defining a tissue receiving space therebetween. The maximum width dimension of the first anchor element may be larger than the maximum width dimension of the second anchor element in use. The first anchor element is configured to be positioned inside the heart chamber and the second anchor element is configured to be positioned outside the heart chamber with heart tissue held in the tissue receiving space therebetween.
    Type: Application
    Filed: January 23, 2018
    Publication date: May 31, 2018
    Inventors: Oliver MARSEILLE, Wolfgang KERKHOFFS
  • Publication number: 20180117228
    Abstract: A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The insertion device includes a shaft having distal and proximal end portions and a plurality of lumens. A first lumen is configured to receive a guidewire and a second lumen is configured to receive a pressurized fluid. A tip connected to the distal end portion of the shaft is configured for insertion into the heart chamber. The tip has a hollow interior communicating with the first shaft lumen. An inflatable member is coupled to the distal end portion of the shaft and includes a hollow interior in fluid communication with the second shaft lumen. The inflatable member is movable between deflated and inflated configurations for releasably securing the insertion device to the inflow cannula.
    Type: Application
    Filed: November 2, 2017
    Publication date: May 3, 2018
    Applicant: CircuLite, Inc.
    Inventors: Robert C. Farnan, Oliver Marseille, Wolfgang Kerkhoffs
  • Patent number: 9901667
    Abstract: Devices, systems and methods for establishing a blood flow conduit between a chamber in a heart of a patient and a remote location. A blood inflow cannula having an outer surface and proximal and distal end portions. The distal end portion is configured for insertion into the chamber of the heart. First and second anchor elements have respective maximum width dimensions extending outwardly from the outer surface of the cannula. The first anchor element is positioned more distally than the second anchor element defining a tissue receiving space therebetween. The maximum width dimension of the first anchor element may be larger than the maximum width dimension of the second anchor element in use. The first anchor element is configured to be positioned inside the heart chamber and the second anchor element is configured to be positioned outside the heart chamber with heart tissue held in the tissue receiving space therebetween.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: February 27, 2018
    Assignee: CircuLite, Inc.
    Inventors: Oliver Marseille, Wolfgang Kerkhoffs
  • Patent number: 9808564
    Abstract: A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The insertion device includes a shaft having distal and proximal end portions and a plurality of lumens. A first lumen is configured to receive a guidewire and a second lumen is configured to receive a pressurized fluid. A tip connected to the distal end portion of the shaft is configured for insertion into the heart chamber. The tip has a hollow interior communicating with the first shaft lumen. An inflatable member is coupled to the distal end portion of the shaft and includes a hollow interior in fluid communication with the second shaft lumen. The inflatable member is movable between deflated and inflated configurations for releasably securing the insertion device to the inflow cannula.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: November 7, 2017
    Assignee: CircuLite, Inc.
    Inventors: Robert C. Farnan, Oliver Marseille, Wolfgang Kerkhoffs
  • Publication number: 20170296720
    Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 19, 2017
    Inventors: Mustafa Ertan TASKIN, Ellen KEYSSELITZ, Wolfgang KERKHOFFS
  • Patent number: 9717832
    Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: August 1, 2017
    Assignee: HeartWave, Inc.
    Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
  • Publication number: 20170119944
    Abstract: Devices, systems and methods for establishing a blood flow conduit between a chamber in a heart of a patient and a remote location. A blood inflow cannula having an outer surface and proximal and distal end portions. The distal end portion is configured for insertion into the chamber of the heart. First and second anchor elements have respective maximum width dimensions extending outwardly from the outer surface of the cannula. The first anchor element is positioned more distally than the second anchor element defining a tissue receiving space therebetween. The maximum width dimension of the first anchor element may be larger than the maximum width dimension of the second anchor element in use. The first anchor element is configured to be positioned inside the heart chamber and the second anchor element is configured to be positioned outside the heart chamber with heart tissue held in the tissue receiving space therebetween.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Inventors: Oliver Marseille, Wolfgang Kerkhoffs
  • Publication number: 20170106130
    Abstract: A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The insertion device includes a shaft having distal and proximal end portions and a plurality of lumens. A first lumen is configured to receive a guidewire and a second lumen is configured to receive a pressurized fluid. A tip connected to the distal end portion of the shaft is configured for insertion into the heart chamber. The tip has a hollow interior communicating with the first shaft lumen. An inflatable member is coupled to the distal end portion of the shaft and includes a hollow interior in fluid communication with the second shaft lumen. The inflatable member is movable between deflated and inflated configurations for releasably securing the insertion device to the inflow cannula.
    Type: Application
    Filed: December 28, 2016
    Publication date: April 20, 2017
    Inventors: Robert C. Farnan, Oliver Marseille, Wolfgang Kerkhoffs
  • Patent number: 9572916
    Abstract: The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods, and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: February 21, 2017
    Assignee: CIRCULITE GMBH
    Inventors: Oliver Marseille, Wolfgang Kerkhoffs, Ellen Keysselitz
  • Patent number: 9572917
    Abstract: Devices, systems and methods for establishing a blood flow conduit between a chamber in a heart of a patient and a remote location. A blood inflow cannula having an outer surface and proximal and distal end portions. The distal end portion is configured for insertion into the chamber of the heart. First and second anchor elements have respective maximum width dimensions extending outwardly from the outer surface of the cannula. The first anchor element is positioned more distally than the second anchor element defining a tissue receiving space therebetween. The maximum width dimension of the first anchor element may be larger than the maximum width dimension of the second anchor element in use. The first anchor element is configured to be positioned inside the heart chamber and the second anchor element is configured to be positioned outside the heart chamber with heart tissue held in the tissue receiving space therebetween.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: February 21, 2017
    Assignee: CircuLite, Inc.
    Inventors: Oliver Marseille, Wolfgang Kerkhoffs
  • Patent number: 9566375
    Abstract: A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The insertion device includes a shaft having distal and proximal end portions and a plurality of lumens. A first lumen is configured to receive a guidewire and a second lumen is configured to receive a pressurized fluid. A tip connected to the distal end portion of the shaft is configured for insertion into the heart chamber. The tip has a hollow interior communicating with the first shaft lumen. An inflatable member is coupled to the distal end portion of the shaft and includes a hollow interior in fluid communication with the second shaft lumen. The inflatable member is movable between deflated and inflated configurations for releasably securing the insertion device to the inflow cannula.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 14, 2017
    Assignee: CircuLite, Inc.
    Inventors: Robert C. Farnan, Oliver Marseille, Wolfgang Kerkhoffs
  • Publication number: 20160193396
    Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.
    Type: Application
    Filed: January 6, 2015
    Publication date: July 7, 2016
    Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
  • Publication number: 20150335804
    Abstract: The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.
    Type: Application
    Filed: September 25, 2013
    Publication date: November 26, 2015
    Applicant: CIRCULITE GMBH
    Inventors: Oliver Marseille, Wolfgang Kerkhoffs, Ellen Keysselitz