Patents by Inventor David R. Tholfsen

David R. Tholfsen 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: 9179896
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial adjustability and retrievability years after implant. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize an adjustable bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: November 10, 2015
    Assignee: MVRx, Inc.
    Inventors: Timothy R Machold, David J Scott, David A Rahdert, David R Tholfsen, Robert T Chang, John A Macoviak
  • Publication number: 20150289976
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial adjustability and retrievability years after implant. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize an adjustable bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: June 26, 2015
    Publication date: October 15, 2015
    Applicant: MVRx, Inc.
    Inventors: Timothy R. Machold, David J. Scott, David A. Rahdert, David R. Tholfsen, Robert T. Chang, John A. Macoviak
  • Publication number: 20140222138
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    Applicant: MVRx, INC.
    Inventors: Timothy R. Machold, Robert T. Chang, David A. Rahdert, David Scott, David R. Tholfsen
  • Publication number: 20140180098
    Abstract: A catheter device that is useable to penetrate from a blood vessel in which the catheter device is positioned to a target location comprises a flexible catheter advanceable into the first blood vessel, a tissue penetrator lumen adapted to receive an operative tissue penetrator which is usable to penetrate from the blood vessel to the target location when properly aimed. Further said catheter including an imaging transducer fixedly mounted on or within the catheter body to provide an imaging signal from which an image of the target location can be obtained. The catheter device may include an imageable marker on the catheter to form on the image obtainable from the imaging signal a penetrator path indication that indicates the path that will be followed by the tissue penetrator when the tissue penetrator exits from the catheter. Alternatively, or addition thereto, the imaging transducer may comprise a plurality of imaging elements which are located so that the penetrator path indication can be obtained.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: MEDTRONIC VASCULAR, INC.
    Inventors: Christopher J. Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
  • Publication number: 20140180222
    Abstract: A system of catheter devices and methods for forming channels or passageways between a luminal anatomical structure (e.g., a blood vessel) and a target location (e.g., another blood vessel, an organ, a mass of tissue, etc.) for the purpose of rerouting blood flow or for delivering a substance or instrument, etc. to the target location.
    Type: Application
    Filed: August 15, 2013
    Publication date: June 26, 2014
    Applicant: Medtronic Vascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, Patrick E. Macaulay, David R. Tholfsen, John T. Garibotto, Philip C. Evard, Joshua Makower
  • Patent number: 8727988
    Abstract: Devices and methods for penetrating from a vessel lumen in which a catheter device is positioned to a target location outside of that vessel lumen. A tissue penetrator advances from a catheter positioned within the vessel lumen to the target location when properly aimed. An imaging transducer fixedly mounted on or within the catheter body provides an imaging signal from which an image of the target location can be obtained. An imageable marker may be present on the catheter to form on the image obtainable from the imaging signal to predict the path that will be followed by the tissue penetrator when the tissue penetrator exits from the catheter. Alternatively, or addition thereto, the imaging transducer may comprise a plurality of imaging elements which are located so that the penetrator path indication can be obtained electronically without use of an imageable marker on the catheter.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: May 20, 2014
    Assignee: Medtronic Vascular, Inc.
    Inventors: Christopher J. Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
  • Patent number: 8690858
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: April 8, 2014
    Assignee: MVRx, Inc.
    Inventors: Timothy R Machold, Robert T Chang, David A Rahdert, David Scott, David R Tholfsen
  • Patent number: 8585596
    Abstract: A system of catheter devices and methods for forming channels or passageways between a luminal anatomical structure (e.g., a blood vessel) and a target location (e.g., another blood vessel, an organ, a mass of tissue, etc.) for the purpose of rerouting blood flow or for delivering a substance or instrument, etc. to the target location.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: November 19, 2013
    Assignee: Medtronic Vascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, Patrick E. Macaulay, David R. Tholfsen, John T. Garibotto, Philip C. Evard, Joshua Makower
  • Publication number: 20120232645
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 13, 2012
    Applicant: MVRx, INC.
    Inventors: TIMOTHY R. MACHOLD, Robert T. Chang, David A. Rahdert, David Scott, David R. Tholfsen
  • Publication number: 20110224596
    Abstract: A catheter device that is useable to penetrate from a blood vessel in which the catheter device is positioned to a target location comprises a flexible catheter advanceable into the first blood vessel, a tissue penetrator lumen adapted to receive an operative tissue penetrator which is usable to penetrate from the blood vessel to the target location when properly aimed. Further said catheter including an imaging transducer fixedly mounted on or within the catheter body to provide an imaging signal from which an image of the target location can be obtained. The catheter device may include an imageable marker on the catheter to form on the image obtainable from the imaging signal a penetrator path indication that indicates the path that will be followed by the tissue penetrator when the tissue penetrator exits from the catheter. Alternatively, or addition thereto, the imaging transducer may comprise a plurality of imaging elements which are located so that the penetrator path indication can be obtained.
    Type: Application
    Filed: May 24, 2011
    Publication date: September 15, 2011
    Applicant: MEDTRONIC VASCULAR,INC.
    Inventors: J Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
  • Publication number: 20110130834
    Abstract: Methods and systems for lung volume reduction of a patient are described. The methods include implanting a flow control device in a bronchial passageway of the lung. The flow control device regulates fluid flow through the bronchial passageway and includes a valve protector that at least partially surrounds a valve member. The valve protector has sufficient rigidity to maintain the shape of the valve member against compression.
    Type: Application
    Filed: November 5, 2010
    Publication date: June 2, 2011
    Applicant: Pulmonx Corporation
    Inventors: Peter M. Wilson, Antony J. Fields, Hanson S. Gifford, III, John G. McCutcheon, Michael J. Hendricksen, Alan R. Rapacki, David R. Tholfsen, Michael S. Barrett, Ronald Hundertmark, Douglas Sutton
  • Patent number: 7854228
    Abstract: Methods and systems for lung volume reduction of a patient are described. The methods include implanting a flow control device in a bronchial passageway of the lung. The flow control device regulates fluid flow through the bronchial passageway and includes a valve protector that at least partially surrounds a valve member. The valve protector has sufficient rigidity to maintain the shape of the valve member against compression.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: December 21, 2010
    Assignee: Pulmonx Corporation
    Inventors: Peter M. Wilson, Antony J. Fields, Hanson S. Gifford, III, John G. McCutcheon, Michael J. Hendricksen, Alan R. Rapacki, David R. Tholfsen, Michael S. Barrett, Ronald Hundertmark, Douglas Sutton
  • Publication number: 20100121357
    Abstract: A catheter device that is useable to penetrate from a blood vessel in which the catheter device is positioned to a target location comprises a flexible catheter advanceable into the first blood vessel, a tissue penetrator lumen adapted to receive an operative tissue penetrator which is usable to penetrate from the blood vessel to the target location when properly aimed. Further said catheter including an imaging transducer fixedly mounted on or within the catheter body to provide an imaging signal from which an image of the target location can be obtained. The catheter device may include an imageable marker on the catheter to form on the image obtainable from the imaging signal a penetrator path indication that indicates the path that will be followed by the tissue penetrator when the tissue penetrator exits from the catheter. Alternatively, or addition thereto, the imaging transducer may comprise a plurality of imaging elements which are located so that the penetrator path indication can be obtained.
    Type: Application
    Filed: December 10, 2009
    Publication date: May 13, 2010
    Applicant: Medtronic Vascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
  • Publication number: 20100016836
    Abstract: Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site and a penetrator is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site. In some applications, the penetrator may be retracted into the vessel wall penetrating catheter and the vessel wall penetrating catheter may be removed, leaving the delivery catheter in place for chronic or continuous delivery of substance(s) to and/or obtaining of information or samples from the target site.
    Type: Application
    Filed: September 28, 2009
    Publication date: January 21, 2010
    Applicant: Medtronic Vascular, Inc.
    Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
  • Patent number: 7637870
    Abstract: A catheter device that is useable to penetrate from a blood vessel in which the catheter device is positioned to a target location comprises a flexible catheter advanceable into the first blood vessel, a tissue penetrator lumen adapted to receive an operative tissue penetrator which is usable to penetrate from the blood vessel to the target location when properly aimed. Further said catheter including an imaging transducer fixedly mounted on or within the catheter body to provide an imaging signal from which an image of the target location can be obtained. The catheter device may include an imageable marker on the catheter to form on the image obtainable from the imaging signal a penetrator path indication that indicates the path that will be followed by the tissue penetrator when the tissue penetrator exits from the catheter. Alternatively, or addition thereto, the imaging transducer may comprise a plurality of imaging elements which are located so that the penetrator path indication can be obtained.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: December 29, 2009
    Assignee: Medtronic Vascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
  • Patent number: 7606615
    Abstract: Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site and a penetrator is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site. In some applications, the penetrator may be retracted into the vessel wall penetrating catheter and the vessel wall penetrating catheter may be removed, leaving the delivery catheter in place for chronic or continuous delivery of substance(s) to and/or obtaining of information or samples from the target site.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: October 20, 2009
    Assignee: Medtronic Vascular, Inc.
    Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
  • Patent number: 7357794
    Abstract: Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site and a penetrator is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site. In some applications, the penetrator may be retracted into the vessel wall penetrating catheter and the vessel wall penetrating catheter may be removed, leaving the delivery catheter in place for chronic or continuous delivery of substance(s) to and/or obtaining of information or samples from the target site.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: April 15, 2008
    Assignee: Medtronic Vascular, Inc.
    Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
  • Patent number: 6941950
    Abstract: Disclosed are methods and devices for regulating fluid flow to and from a region of a patient's lung, such as to achieve a desired fluid flow dynamic to a lung region during respiration and/or to induce collapse in one or more lung regions. An identified region of the lung is targeted for treatment, such as to modify the flow to the targeted lung region or to achieve volume reduction or collapse of the targeted lung region. The targeted lung region is then bronchially isolated to regulate airflow into and/or out of the targeted lung region through one or more bronchial passageways that feed air to the targeted lung region. The bronchial isolation of the targeted lung region is accomplished by implanting a flow control device into a bronchial passageway that feeds air to a targeted lung region.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: September 13, 2005
    Assignee: Emphasys Medical, Inc.
    Inventors: Peter M. Wilson, Antony J. Fields, Hanson S. Gifford, III, John G. McCutcheon, Michael J. Hendrickson, Alan R. Rapacki, David R. Tholfsen, Michael S. Barrett, Ronald Hundertmark, Donald Sutton
  • Publication number: 20040138562
    Abstract: Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site and a penetrator is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site. In some applications, the penetrator may be retracted into the vessel wall penetrating catheter and the vessel wall penetrating catheter may be removed, leaving the delivery catheter in place for chronic or continuous delivery of substance(s) to and/or obtaining of information or samples from the target site.
    Type: Application
    Filed: March 1, 2004
    Publication date: July 15, 2004
    Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, Johny Y. Chang, Joseph Cantanese III, David R. Tholfsen
  • Publication number: 20040122318
    Abstract: A catheter device that is useable to penetrate from a blood vessel in which the catheter device is positioned to a target location comprises a flexible catheter advanceable into the first blood vessel, a tissue penetrator lumen adapted to receive an operative tissue penetrator which is usable to penetrate from the blood vessel to the target location when properly aimed. Further said catheter including an imaging transducer fixedly mounted on or within the catheter body to provide an imaging signal from which an image of the target location can be obtained. The catheter device may include an imageable marker on the catheter to form on the image obtainable from the imaging signal a penetrator path indication that indicates the path that will be followed by the tissue penetrator when the tissue penetrator exits from the catheter. Alternatively, or addition thereto, the imaging transducer may comprise a plurality of imaging elements which are located so that the penetrator path indication can be obtained.
    Type: Application
    Filed: November 14, 2003
    Publication date: June 24, 2004
    Applicant: TransVascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower