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).
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Patent number: 9179896Abstract: 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: GrantFiled: August 15, 2011Date of Patent: November 10, 2015Assignee: MVRx, Inc.Inventors: Timothy R Machold, David J Scott, David A Rahdert, David R Tholfsen, Robert T Chang, John A Macoviak
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Publication number: 20150289976Abstract: 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: ApplicationFiled: June 26, 2015Publication date: October 15, 2015Applicant: MVRx, Inc.Inventors: Timothy R. Machold, David J. Scott, David A. Rahdert, David R. Tholfsen, Robert T. Chang, John A. Macoviak
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Publication number: 20140222138Abstract: 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: ApplicationFiled: April 8, 2014Publication date: August 7, 2014Applicant: MVRx, INC.Inventors: Timothy R. Machold, Robert T. Chang, David A. Rahdert, David Scott, David R. Tholfsen
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Publication number: 20140180098Abstract: 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: ApplicationFiled: December 19, 2013Publication date: June 26, 2014Applicant: MEDTRONIC VASCULAR, INC.Inventors: Christopher J. Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
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Publication number: 20140180222Abstract: 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: ApplicationFiled: August 15, 2013Publication date: June 26, 2014Applicant: Medtronic Vascular, Inc.Inventors: J. Christopher Flaherty, Jason B. Whitt, Patrick E. Macaulay, David R. Tholfsen, John T. Garibotto, Philip C. Evard, Joshua Makower
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Patent number: 8727988Abstract: 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: GrantFiled: May 24, 2011Date of Patent: May 20, 2014Assignee: Medtronic Vascular, Inc.Inventors: Christopher J. Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
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Patent number: 8690858Abstract: 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: GrantFiled: May 29, 2012Date of Patent: April 8, 2014Assignee: MVRx, Inc.Inventors: Timothy R Machold, Robert T Chang, David A Rahdert, David Scott, David R Tholfsen
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Patent number: 8585596Abstract: 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: GrantFiled: February 20, 2003Date of Patent: November 19, 2013Assignee: Medtronic Vascular, Inc.Inventors: J. Christopher Flaherty, Jason B. Whitt, Patrick E. Macaulay, David R. Tholfsen, John T. Garibotto, Philip C. Evard, Joshua Makower
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Publication number: 20120232645Abstract: 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: ApplicationFiled: May 29, 2012Publication date: September 13, 2012Applicant: MVRx, INC.Inventors: TIMOTHY R. MACHOLD, Robert T. Chang, David A. Rahdert, David Scott, David R. Tholfsen
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Publication number: 20110224596Abstract: 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: ApplicationFiled: May 24, 2011Publication date: September 15, 2011Applicant: MEDTRONIC VASCULAR,INC.Inventors: J Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
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Publication number: 20110130834Abstract: 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: ApplicationFiled: November 5, 2010Publication date: June 2, 2011Applicant: Pulmonx CorporationInventors: 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
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Patent number: 7854228Abstract: 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: GrantFiled: March 28, 2005Date of Patent: December 21, 2010Assignee: Pulmonx CorporationInventors: 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
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Publication number: 20100121357Abstract: 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: ApplicationFiled: December 10, 2009Publication date: May 13, 2010Applicant: Medtronic Vascular, Inc.Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
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Publication number: 20100016836Abstract: 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: ApplicationFiled: September 28, 2009Publication date: January 21, 2010Applicant: Medtronic Vascular, Inc.Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
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Patent number: 7637870Abstract: 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: GrantFiled: November 14, 2003Date of Patent: December 29, 2009Assignee: Medtronic Vascular, Inc.Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower
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Patent number: 7606615Abstract: 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: GrantFiled: June 10, 2003Date of Patent: October 20, 2009Assignee: Medtronic Vascular, Inc.Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
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Patent number: 7357794Abstract: 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: GrantFiled: January 17, 2002Date of Patent: April 15, 2008Assignee: Medtronic Vascular, Inc.Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, John Y. Chang, Joseph Catanese, III, David R. Tholfsen
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Patent number: 6941950Abstract: 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: GrantFiled: October 10, 2002Date of Patent: September 13, 2005Assignee: 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
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Publication number: 20040138562Abstract: 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: ApplicationFiled: March 1, 2004Publication date: July 15, 2004Inventors: Joshua Makower, Theodore C. Lamson, J. Christopher Flaherty, John A. Reggie, Johny Y. Chang, Joseph Cantanese III, David R. Tholfsen
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Publication number: 20040122318Abstract: 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: ApplicationFiled: November 14, 2003Publication date: June 24, 2004Applicant: TransVascular, Inc.Inventors: J. Christopher Flaherty, Jason B. Whitt, John Y. Chang, David R. Tholfsen, Philip C. Evard, Joshua Makower