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).

  • Publication number: 20040074491
    Abstract: Disclosed are various devices and methods for delivering bronchial isolation devices into the lung of a patient. In accordance with one aspect of the invention, there is disclosed an apparatus for deploying a bronchial device in a bronchial passageway in a lung of a patient. The apparatus comprises a flexible shaft having an inner lumen and a distal end adapted to engage the bronchial isolation device. The apparatus further comprises a wire slidably disposed in the inner lumen and a housing movably coupled to the distal end of the shaft and configured to receive the bronchial device. The wire is connected to the housing to produce relative movement between the housing and the shaft to deploy the bronchial device from the housing.
    Type: Application
    Filed: August 20, 2003
    Publication date: April 22, 2004
    Inventors: Michael Hendricksen, Ronald R. Hundertmark, David R. Tholfsen, Peter M. Wilson, Antony J. Fields
  • Patent number: 6660024
    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: December 26, 2001
    Date of Patent: December 9, 2003
    Assignee: TransVascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
  • Patent number: 6602241
    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, 2001
    Date of Patent: August 5, 2003
    Assignee: TransVascular, Inc.
    Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
  • Publication number: 20030078562
    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: January 17, 2001
    Publication date: April 24, 2003
    Applicant: TransVascular, Inc.
    Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, David R. Tholfsen
  • Publication number: 20030070682
    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: Application
    Filed: October 10, 2002
    Publication date: April 17, 2003
    Inventors: Peter M. Wilson, Antony J. Fields, Hanson S. Gifford, John G. McCutcheon, Michael J. Hendricksen, Alan R. Rapacki, David R. Tholfsen, Michael S. Barrett, Ronald Hundertmark, Douglas Sutton
  • Patent number: 6544230
    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: March 31, 1999
    Date of Patent: April 8, 2003
    Assignee: TransVascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, Patrick E. Macaulay, David R. Tholfsen, John T. Garibotto, Philip C. Evard, Joshua Makower
  • Patent number: 6375615
    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: March 31, 1999
    Date of Patent: April 23, 2002
    Assignee: TransVascular, Inc.
    Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower