Patents by Inventor William Drasler

William Drasler 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: 20170112480
    Abstract: The present disclosure relates generally to methods and devices for closing and/or sealing an opening in a vessel wall and/or an adjacent tissue tract. In some cases, the device includes a sheath having a distal end that can expand radially as needed. In some cases, the distal portion of the sheath is weakened so that it may tear in a predetermined manner. In some cases, the distal portion of the sheath is weakened so that it may deform plastically in a predetermined manner. In some cases, the distal portion of the sheath or the entire sheath may be folded so that it unfolds in a predetermined manner. In general, each of these sheaths may have a relatively small introduction profile, may have a distal portion that can expand to a larger diameter than the introduction profile during use, and can be collapsed again to a smaller profile for removal.
    Type: Application
    Filed: November 15, 2012
    Publication date: April 27, 2017
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Mark L. Jenson, Wayne M. Falk, Jason Hill, John Blix, William Drasler
  • Patent number: 9504807
    Abstract: A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: November 29, 2016
    Assignee: InterValve, Inc.
    Inventors: William Drasler, Wes Pedersen, Mark Ungs
  • Patent number: 9242081
    Abstract: In one embodiment, a balloon catheter is provided for use during annuloplasty. Preferably, the balloon includes a distal, noncompliant portion and a proximal semi-compliant portion which allows for sequential inflation, reliable positioning, and compliance measurement.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: January 26, 2016
    Assignee: InterValve, Inc.
    Inventors: William Drasler, Wesley Pedersen, Mark Ungs
  • Publication number: 20150066069
    Abstract: A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Inventors: William Drasler, Wes Pedersen, Mark Ungs
  • Patent number: 8900264
    Abstract: A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: December 2, 2014
    Assignee: InterValve, Inc.
    Inventors: William Drasler, Wes Pedersen, Mark Ungs
  • Publication number: 20120083809
    Abstract: In one embodiment, a balloon catheter is provided for use during annuloplasty. Preferably, the balloon includes a distal, noncompliant portion and a proximal semi-compliant portion which allows for sequential inflation, reliable positioning, and compliance measurement.
    Type: Application
    Filed: September 13, 2011
    Publication date: April 5, 2012
    Inventors: William Drasler, Wesley Pedersen, Mark Ungs
  • Publication number: 20110218564
    Abstract: A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Inventors: William Drasler, Wes Pedersen, Mark Ungs
  • Patent number: 7951111
    Abstract: A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: May 31, 2011
    Assignee: Intervalve, Inc.
    Inventors: William Drasler, Wes Pedersen, Mark Ungs
  • Patent number: 7789893
    Abstract: An apparatus for promoting hemostasis of a puncture formed in a blood vessel accessible through an incision tract and methods of use thereof. The apparatus includes distal and proximal balloons each having a contracted position and an expanded position, the proximal balloon spaced by a predetermined initial distance from the distal balloon. The apparatus further includes at least one catheter coupling the distal and proximal balloons to a source of pressurized fluid to selectively actuate the distal and proximal balloons between the contracted and expanded positions.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: September 7, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: William Drasler, Mark Jenson, Jason P. Hill
  • Publication number: 20100094209
    Abstract: A valvuloplasty catheter has a dog-bone shaped balloon with semi-compliant smaller diameter waist and non-compliant larger diameter bulbous end regions. The balloon centers across the valve with the waist adjacent to the annulus. One bulbous region serves to hyperextend the valve leaflets and the other assists in stabilizing the balloon position to reduce migration. The semi-compliant waist increases in diameter as fluid enters the balloon until it comes into contact with the valve annulus. The pressure within the balloon per unit of volume delivery has a greater slope after contact with the annulus than before resulting in a change in slope for the pressure versus volume curve. The diameter of the balloon and annulus are determined at this inflection point when the balloon contacts the annulus.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 15, 2010
    Inventors: William Drasler, Wes Pedersen, Mark Ungs
  • Publication number: 20090082827
    Abstract: A hinged anchor for a medical device electrode is disclosed. In one embodiment, the hinged anchor has a hinged portion and an anchor portion. The hinged portion can have a first configuration forming a first angle and a second configuration forming a second angle. The second angle can be a sharper angle than the first angle, and the hinged portion can be predisposed to assume the second configuration. The hinged anchor can be disposed on a control module of a leadless microstimulator device.
    Type: Application
    Filed: September 26, 2007
    Publication date: March 26, 2009
    Applicant: CARDIAC PACEMAKERS, INC.
    Inventors: Graig Kveen, Douglas Saholt, Joseph Thielen, Mark Jenson, William Drasler
  • Publication number: 20080065150
    Abstract: An apparatus for promoting hemostasis of a puncture formed in a blood vessel accessible through an incision tract. The apparatus includes a distal balloon having a contacted position, in which a profile of the distal balloon is sized for insertion through the blood vessel puncture, an expanded position, in which the distal balloon profile prevents passage through the blood vessel puncture. The apparatus also includes a proximal balloon spaced by a predetermined initial distance from the distal balloon and having a contracted position, in which a profile of the proximal balloon is sized for insertion through the incision tract, and an expanded position, in which the proximal balloon profile blocks passage through the blood vessel puncture. The apparatus further includes at least one catheter coupling the distal and proximal balloons to a source of pressurized fluid to selectively actuate the distal and proximal balloons between the contracted and expanded positions.
    Type: Application
    Filed: September 12, 2006
    Publication date: March 13, 2008
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: William Drasler, Mark Jenson, Jason P. Hill
  • Publication number: 20070260281
    Abstract: An apparatus for locally controlling smooth muscle tone includes a first electrode for insertion into an artery; a barrier for preventing the first electrode from contacting an arterial wall; a second electrode; a power supply; and a controller for coupling the power supply to the electrodes. The controller is configured to cause the electrode to maintain a waveform for controlling polarization of smooth muscle tone.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 8, 2007
    Inventors: Roger Hastings, William Drasler, Vitaly Shapovalov, Mark Schroeder
  • Publication number: 20070150037
    Abstract: Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrodes that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Each of the electrodes contains a source of electrical energy for pacing the myocardium and is adapted to receive electromagnetic energy from a source outside the myocardium. The system also includes a source adapted for placement outside the myocardium and that uses locally measured electrocardiograms to synchronize pacing of the heart by sending electromagnetic commands to the electrodes to pace the myocardium surrounding the electrodes. Also disclosed is various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies.
    Type: Application
    Filed: March 8, 2007
    Publication date: June 28, 2007
    Inventors: Roger Hastings, William Drasler, Daniel Lafontaine, Anupama Sadasiva, Scott Smith
  • Publication number: 20070150038
    Abstract: Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrodes that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Each of the electrodes contains a source of electrical energy for pacing the myocardium and is adapted to receive electromagnetic energy from a source outside the myocardium. The system also includes a source adapted for placement outside the myocardium and that uses locally measured electrocardiograms to synchronize pacing of the heart by sending electromagnetic commands to the electrodes to pace the myocardium surrounding the electrodes. Also disclosed is various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies.
    Type: Application
    Filed: March 8, 2007
    Publication date: June 28, 2007
    Inventors: Roger Hastings, William Drasler, Daniel Lafontaine, Anupama Sadasiva, Scott Smith
  • Publication number: 20070135882
    Abstract: Some embodiments of pacing systems employ wireless electrode assemblies to provide pacing therapy. The wireless electrode assemblies may wirelessly receive energy via an inductive coupling so as to provide electrical stimulation to the surrounding heart tissue. In certain embodiments, the wireless electrode assembly may be pivotable so that the proximal end of the wireless electrode assembly may be shifted to a position against the heart wall after the distal end has been secured to the heart wall.
    Type: Application
    Filed: August 28, 2006
    Publication date: June 14, 2007
    Inventors: William Drasler, Michael Pikus, Roger Hastings
  • Publication number: 20070135883
    Abstract: Some embodiments of pacing systems employ wireless electrode assemblies to provide pacing therapy. The wireless electrode assemblies may wirelessly receive energy via an inductive coupling so as to provide electrical stimulation to the surrounding heart tissue. In certain embodiments, the wireless electrode assembly may include one or more biased tines that shift from a first position to a second position to secure the wireless electrode assembly into the inner wall of the heart chamber.
    Type: Application
    Filed: October 13, 2006
    Publication date: June 14, 2007
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: William Drasler, Michael Pikus, Roger Hastings, Scott Smith, Martin Willard, Daniel Lafontaine, Douglas Saholt, Graig Kveen
  • Publication number: 20070129788
    Abstract: A venous valve-with a structural member and valve leaflets that provide a sinus.
    Type: Application
    Filed: January 11, 2007
    Publication date: June 7, 2007
    Inventors: William Drasler, Mark Jenson, Jason Hill, David Sogard, Patrick Haverkost, Susan Shoemaker
  • Publication number: 20060293612
    Abstract: Occluded vasculature such as occluded arterial vasculature can be recanalized using a device that is configured to penetrate an occlusion, while limiting a distance that said penetration structure can extend in order to limit inadvertent vascular damage. The device can include an elongate shaft of a guidewire and a stylet disposed within a lumen of the elongate shaft such that the stylet is selectively actuatable within the elongate shaft.
    Type: Application
    Filed: February 15, 2006
    Publication date: December 28, 2006
    Inventors: Mark Jenson, William Drasler
  • Publication number: 20060190074
    Abstract: A venous valve with a frame and a cover on the frame for unidirectional flow of a liquid through the valve.
    Type: Application
    Filed: February 23, 2005
    Publication date: August 24, 2006
    Inventors: Jason Hill, Susan Shoemaker, William Drasler