Patents by Inventor Roger W. McGowan

Roger W. McGowan 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: 20220313304
    Abstract: Embodiments herein relate to systems and methods for intravascular lesion disruption. In an embodiment, a catheter system for imparting pressure to induce fractures upon a vascular lesion within or adjacent a blood vessel wall is included. The system includes a catheter configured to advance to a vascular lesion, the catheter including an elongate shaft that defines at least a first orifice for fluid flow; a balloon, coupled to the elongate shaft, that surrounds the first orifice where the balloon can expand from a collapsed configuration suitable for advancing the catheter through a patient's vasculature to a first expanded configuration suitable for anchoring the catheter in position relative to a treatment site; and a propulsion system configured to propel a fluid from the first orifice toward the balloon wall to create an inertial impulse in a vessel wall to transfer momentum to the vascular lesion. Other embodiments are also included herein.
    Type: Application
    Filed: June 23, 2022
    Publication date: October 6, 2022
    Inventors: Daniel Frank Massimini, Roger W. McGowan, Christopher Smuk, Binh C. Tran
  • Patent number: 11399862
    Abstract: Embodiments herein relate to systems and methods for intravascular lesion disruption. In an embodiment, a catheter system for imparting pressure to induce fractures upon a vascular lesion within or adjacent a blood vessel wall is included. The system includes a catheter configured to advance to a vascular lesion, the catheter including an elongate shaft that defines at least a first orifice for fluid flow; a balloon, coupled to the elongate shaft, that surrounds the first orifice where the balloon can expand from a collapsed configuration suitable for advancing the catheter through a patient's vasculature to a first expanded configuration suitable for anchoring the catheter in position relative to a treatment site; and a propulsion system configured to propel a fluid from the first orifice toward the balloon wall to create an inertial impulse in a vessel wall to transfer momentum to the vascular lesion. Other embodiments are also included herein.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: August 2, 2022
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Daniel Frank Massimini, Roger W. McGowan, Christopher Smuk, Binh C. Tran
  • Publication number: 20220008130
    Abstract: A catheter system (100) for treating a treatment site (106) within or adjacent to a vessel wall (208A) or a heart valve within a body (107) of a patient (109) includes an energy source (124), a balloon (104), an energy guide (122A), and a tissue identification system (142). The energy source (124) generates energy. The balloon (104) is positionable substantially adjacent to the treatment site (106). The balloon (104) includes a balloon wall (130) that defines a balloon interior (146). The balloon (104) can be configured to retain a balloon fluid (132) within the balloon interior (146). The energy guide (122A) is configured to receive energy from the energy source (124) and guide the energy into the balloon interior (146) so that plasma bubbles (134) are formed in the balloon fluid (132) within the balloon interior (146). The tissue identification system (142) can be configured to acoustically analyze tissue within the treatment site (106).
    Type: Application
    Filed: July 1, 2021
    Publication date: January 13, 2022
    Inventors: Daniel Frank Massimini, Roger W. McGowan, Haiping Shao, Darrin Dale Beekman, Eric Schultheis
  • Publication number: 20210386479
    Abstract: A catheter system (100) for placement within a treatment site (106) at a vessel wall (208A) or a heart valve includes an energy source (124), a balloon (104), an energy guide (122A), and a tissue identification system (142). The energy source (124) generates energy. The balloon (104) is positionable substantially adjacent to the treatment site (106). The balloon (104) has a balloon wall (130) that defines a balloon interior (146). The balloon (104) is configured to retain a balloon fluid (132) within the balloon interior (146). The energy guide (122A) is configured to receive energy from the energy source (124) and guide the energy into the balloon interior (146) so that plasma is formed in the balloon fluid (132) within the balloon interior (146). The tissue identification system (142) is configured to spectroscopically analyze tissue within the treatment site (106).
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Inventors: Daniel Frank Massimini, Roger W. McGowan, Haiping Shao, Darrin Dale Beekman, Christopher A. Cook
  • Publication number: 20210378743
    Abstract: A catheter system (100) for treating a treatment site (106) within or adjacent to the vessel wall of a blood vessel (108), or the heart valve, includes an energy source (124), a balloon (104), an energy guide (122A), and a balloon integrity protection system (142). The energy source (124) generates energy. The balloon (104) is positionable substantially adjacent to the treatment site (106). The balloon (104) has a balloon wall (130) that defines a balloon interior (146). The balloon (104) is configured to retain a balloon fluid (132) within the balloon interior (146). The energy guide (122A) is configured to receive energy from the energy source (124) and guide the energy into the balloon interior (146) so that plasma is formed in the balloon fluid (132) within the balloon interior (146). The balloon integrity protection system (142) is operatively coupled to the balloon (104).
    Type: Application
    Filed: June 1, 2021
    Publication date: December 9, 2021
    Inventors: Daniel Frank Massimini, Roger W. McGowan, Jeffrey Steven Fuller, Jeffrey S. Lindquist, Dave Parsons, Eric Schultheis
  • Patent number: 11191927
    Abstract: An example dilator is disclosed. The example dilator includes a hub and an elongate shaft having a distal end region, a proximal end region and a cross-sectional profile. Additionally, the proximal end region of the elongate shaft is coupled to the hub and the elongate shaft is configured to extend through at least a portion of a lumen of an expandable introducer sheath. Additionally, the cross-sectional profile of the elongate shaft includes at least one engagement portion and at least a portion of the expandable introducer sheath extends into the at least one engagement portion of the dilator.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: December 7, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Cathal Joseph McLaughlin, James M. Anderson, Roger W. McGowan, Gregory Dyer, Erik Joseph Haun, Shawn M. Wignall
  • Patent number: 11166803
    Abstract: In some aspects, the present disclosure pertains to self-expanding emboli-capturing centering devices for centering a medical instrument in a conduit within a patient. The centering devices comprise (a) an elongate shaft, (b) a self-expanding centering member having an open distal end and an inner surface forming a central lumen with a flared distal portion, the centering member being configured such that a fluid flowing in a distal-to-proximal direction that is received by the open distal end flows proximally along the flared distal portion of the central lumen before exiting the central lumen through one or more openings in a proximal portion of the centering member, and (c) a filter material configured to filter the fluid received by the open distal end of the centering member. Other aspects of the present disclosure pertain to systems and methods employing such centering devices.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 9, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Roger W. McGowan, Alexander J. Wiedmann, Jennifer Reinhart, Patrick A. Haverkost, Timothy A. Ostroot, Gurpreet S. Sandhu, Daniel B. Spoon, Brandon J. Tefft
  • Patent number: 11103262
    Abstract: An ultrasound catheter may be adapted for placement within a blood vessel having a vessel wall for treating a vascular lesion within or adjacent the vessel wall. The ultrasound catheter includes an elongate shaft extending from a distal region to a proximal region and an ultrasound transducer that is disposed relative to the distal region of the elongate shaft and is adapted to impart near-field acoustic pressure waves upon the vascular lesion in order to mechanically modify the vascular lesion. An inflatable balloon is disposed about the ultrasound transducer and is coupled to the elongate shaft, the inflatable balloon having a collapsed configuration suitable for advancing the ultrasound catheter through a patient's vasculature and an expanded configuration suitable for anchoring the ultrasound catheter in position relative to a treatment site.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: August 31, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Binh C. Tran, Douglas Dean Pagoria, Roger W. McGowan, Christopher Smuk, Daniel Frank Massimini
  • Patent number: 11076765
    Abstract: A pressure sensing medical device may include a guidewire including a tubular member having a lumen, the tubular member being translatable between a generally straightened position and a deflected position, and a pressure sensor attached at a distal end of a fiber optic extending within the lumen, the pressure sensor being disposed within a distal portion of the tubular member. The pressure sensor may include a pressure-sensitive membrane disposed on a distal end thereof. The pressure sensor may include one or more contact members capable of providing a contact point between the contact member and an inner surface of the tubular member when in the deflected position, the contact point being axially spaced apart from the membrane along a longitudinal axis of the pressure sensor.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: August 3, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Roger W. McGowan, Gregory Lee
  • Patent number: 10932679
    Abstract: A pressure sensing guidewire includes a distal end and a proximal end. The guidewire includes a tubular member having a distal portion and a proximal portion. The guidewire includes an optical pressure sensor disposed within the distal portion of the tubular member, and a polymer fiber optic cable extending proximally from the optical pressure sensor. The optical pressure sensor is located at a position that is about 3 centimeters or less from the distal end of the pressure sensing guidewire.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: March 2, 2021
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Roger W. McGowan, Brice L. Shireman, Lloyd Radman
  • Publication number: 20200406009
    Abstract: A catheter system for pressure wave and inertial impulse generation for intravascular lesion disruption at a treatment site includes a catheter including an elongate shaft and balloon coupled to the elongate shaft. The catheter system includes a light guide disposed along the elongate shaft and at least partially within the balloon, where the light guide is in optical communication with a light source and a balloon fluid. The catheter can include a first focusing element located at a distal portion of the light guide and in optical communication with the light source. The first focusing element can direct light from within the light guide to a first location at a first distance away from the distal portion of the light guide to initiate plasma formation in the balloon fluid away from the distal portion and to cause rapid bubble formation, thereby imparting pressure waves at the treatment site.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 31, 2020
    Inventors: Daniel Frank Massimini, Daniel Lee Krautkremer, Haiping Shao, Roger W. McGowan
  • Publication number: 20200406010
    Abstract: A catheter system for pressure wave and inertial impulse generation for intravascular lesion disruption includes a balloon coupled to an elongate shaft, and a first and second light guide disposed along the elongate shaft. The first and second light guides each include a diverting feature in optical communication with at least one light window to direct light to exit each light guide toward a side surface portion thereof and toward the balloon. A method includes expanding the balloon from a collapsed configuration to a first expanded configuration, and activating a light source in optical communication with each light guide to provide sub-millisecond pulses of light to the diverting features, thereby inducing plasma formation in a balloon fluid, causing rapid bubble formation, and imparting pressure waves upon the treatment site.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 31, 2020
    Inventors: Daniel Frank Massimini, Daniel Lee Krautkremer, Haiping Shao, Roger W. McGowan
  • Publication number: 20200405333
    Abstract: A catheter system for imparting pressure to induce fractures at a treatment site within or adjacent a blood vessel wall includes a catheter, a fortified balloon inflation fluid and a first light guide. The catheter includes an elongate shaft and a balloon that is coupled to the elongate shaft. The balloon has a balloon wall and can expand to a first expanded configuration to anchor the catheter in position relative. The fortified balloon inflation fluid can expand the balloon to the first expanded configuration. The fortified balloon inflation fluid includes a base inflation fluid and a fortification component. The fortification component reduces a threshold for inducing plasma formation in the fortified balloon inflation fluid compared to the base inflation fluid. The fortification component can include at least one of carbon and iron. The first light guide is disposed along the elongate shaft and is positioned at least partially within the balloon.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 31, 2020
    Inventors: Daniel Frank Massimini, Daniel Lee Krautkremer, Haiping Shao, Roger W. McGowan
  • Publication number: 20200405391
    Abstract: A catheter system includes a catheter having an elongate shaft, a balloon and a light guide. The balloon expands from a collapsed configuration to a first expanded configuration. The light guide is disposed along the elongate shaft and is in optical communication with a light source and a balloon fluid. A first portion of the light guide extends into a recess defined by the elongate shaft. A protection structure is disposed within the recess and is in contact with the first portion of the light guide. The light source provides pulses of light to the balloon fluid, thereby initiating plasma formation and rapid bubble formation within the balloon, thereby imparting pressure waves upon a treatment site. The protection structure can provide structural protection from the pressure waves to the first portion of the light guide.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 31, 2020
    Inventors: Daniel Frank Massimini, Daniel Lee Krautkremer, Haiping Shao, Roger W. McGowan
  • Publication number: 20200398033
    Abstract: A catheter system for imparting pressure to induce fractures in a vascular lesion within or adjacent a vessel wall, includes a catheter and a superheating system. The catheter can advance to the vascular lesion. The catheter includes an elongate shaft and a balloon coupled to the elongate shaft. The balloon includes a balloon wall. The balloon moves between a collapsed configuration and a first expanded configuration suitable for anchoring the catheter in position relative to a treatment site. The superheating system can heat a balloon fluid within the balloon rapidly enough to achieve spontaneous vaporization of the balloon fluid and to generate inertial bubbles and acoustic pressure waves. The superheating system can include a first light guide extending along the elongate shaft. The first light guide is in optical communication with a light source at a proximal portion of the first light guide. The first light guide can include a first light window at a distal portion of the first light guide.
    Type: Application
    Filed: May 20, 2020
    Publication date: December 24, 2020
    Inventors: Roger W. McGowan, Daniel Frank Massimini, Christopher Smuk, Haiping Shao
  • Publication number: 20200397453
    Abstract: A photoacoustic catheter adapted for placement within a blood vessel having a vessel wall includes an elongate shaft, a balloon and a photoacoustic transducer. The elongate shaft can extend from a proximal region to a distal region. The elongate shaft can include a light guide that is configured to be placed in optical communication with a light source. The balloon is coupled to the elongate shaft, and can be configured to expand from a collapsed configuration suitable for advancing the photoacoustic catheter through a patient's vasculature to a first expanded configuration suitable for anchoring the photoacoustic catheter in position relative to a treatment site. The photoacoustic transducer can be disposed on a surface of the balloon and in optical communication with the light guide. The photoacoustic transducer can include a light-absorbing material and a thermal expansion material.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 24, 2020
    Inventors: Roger W. McGowan, Daniel Frank Massimini, Haiping Shao, Christopher Smuk
  • Publication number: 20200397461
    Abstract: Embodiments herein relate to systems and methods for intravascular lesion disruption. In an embodiment, a catheter system for imparting pressure to induce fractures upon a vascular lesion within or adjacent a blood vessel wall is included. The system includes a catheter configured to advance to a vascular lesion, the catheter including an elongate shaft that defines at least a first orifice for fluid flow; a balloon, coupled to the elongate shaft, that surrounds the first orifice where the balloon can expand from a collapsed configuration suitable for advancing the catheter through a patient's vasculature to a first expanded configuration suitable for anchoring the catheter in position relative to a treatment site; and a propulsion system configured to propel a fluid from the first orifice toward the balloon wall to create an inertial impulse in a vessel wall to transfer momentum to the vascular lesion. Other embodiments are also included herein.
    Type: Application
    Filed: June 23, 2020
    Publication date: December 24, 2020
    Inventors: Daniel Frank Massimini, Roger W. McGowan, Christopher Smuk, Binh C. Tran
  • Patent number: 10864354
    Abstract: Apparatuses, systems, and methods for crossing a tissue region may include a catheter and a tip section arranged therewith. The tip section may be configured to puncture the tissue region and create an opening therein, dilate the opening in the tissue region, and pass through the opening.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 15, 2020
    Assignees: Boston Scientific Scimed Inc, Mayo Foundation for Medical Education and Research
    Inventors: Joseph E. Adriaens, Douglas D. Pagoria, Joel T. Eggert, James P. Rohl, Roger W. McGowan, Katherine L. Baldwin, Todd College, James K. Cawthra, Jr., Eric M. Petersen, James A. Klos, Douglas Pennington
  • Patent number: 10835182
    Abstract: A medical device system may include a guidewire including a distal pressure sensor and a proximal end. A connector cable may be coupled to the proximal end of the guidewire and may have a proximal end. A signal conditioning unit may be coupled to the proximal end of the connector cable. One or more of the guidewire, the connector cable, and the signal conditioning unit may include an optical fiber having a core with a tapered outer diameter.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: November 17, 2020
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventor: Roger W. McGowan
  • Patent number: 10722690
    Abstract: Pressure sensing guidewires are disclosed. The pressure sensing guidewires may include a tubular member having a proximal portion and a distal portion. The distal portion may have a plurality of slots formed therein. The distal portion may have a first wall thickness along a first region and a second wall thickness smaller than the first wall thickness along a second region. A pressure sensor may be disposed within the distal portion of the tubular member and housed within the second region. An anti-thrombogenic coating may be disposed on an inner surface, an outer surface, or both of the second region of the distal portion of the tubular member.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: July 28, 2020
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Roger W. McGowan, Brice Lee Shireman