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: 20170112480Abstract: 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: ApplicationFiled: November 15, 2012Publication date: April 27, 2017Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Mark L. Jenson, Wayne M. Falk, Jason Hill, John Blix, William Drasler
-
Patent number: 9504807Abstract: 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: GrantFiled: November 7, 2014Date of Patent: November 29, 2016Assignee: InterValve, Inc.Inventors: William Drasler, Wes Pedersen, Mark Ungs
-
Patent number: 9242081Abstract: 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: GrantFiled: September 13, 2011Date of Patent: January 26, 2016Assignee: InterValve, Inc.Inventors: William Drasler, Wesley Pedersen, Mark Ungs
-
Publication number: 20150066069Abstract: 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: ApplicationFiled: November 7, 2014Publication date: March 5, 2015Inventors: William Drasler, Wes Pedersen, Mark Ungs
-
Patent number: 8900264Abstract: 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: GrantFiled: May 16, 2011Date of Patent: December 2, 2014Assignee: InterValve, Inc.Inventors: William Drasler, Wes Pedersen, Mark Ungs
-
Publication number: 20120083809Abstract: 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: ApplicationFiled: September 13, 2011Publication date: April 5, 2012Inventors: William Drasler, Wesley Pedersen, Mark Ungs
-
Publication number: 20110218564Abstract: 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: ApplicationFiled: May 16, 2011Publication date: September 8, 2011Inventors: William Drasler, Wes Pedersen, Mark Ungs
-
Patent number: 7951111Abstract: 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: GrantFiled: October 9, 2009Date of Patent: May 31, 2011Assignee: Intervalve, Inc.Inventors: William Drasler, Wes Pedersen, Mark Ungs
-
Patent number: 7789893Abstract: 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: GrantFiled: September 12, 2006Date of Patent: September 7, 2010Assignee: Boston Scientific Scimed, Inc.Inventors: William Drasler, Mark Jenson, Jason P. Hill
-
Publication number: 20100094209Abstract: 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: ApplicationFiled: October 9, 2009Publication date: April 15, 2010Inventors: William Drasler, Wes Pedersen, Mark Ungs
-
Publication number: 20090082827Abstract: 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: ApplicationFiled: September 26, 2007Publication date: March 26, 2009Applicant: CARDIAC PACEMAKERS, INC.Inventors: Graig Kveen, Douglas Saholt, Joseph Thielen, Mark Jenson, William Drasler
-
Publication number: 20080065150Abstract: 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: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Applicant: Boston Scientific Scimed, Inc.Inventors: William Drasler, Mark Jenson, Jason P. Hill
-
Publication number: 20070260281Abstract: 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: ApplicationFiled: May 2, 2006Publication date: November 8, 2007Inventors: Roger Hastings, William Drasler, Vitaly Shapovalov, Mark Schroeder
-
Publication number: 20070150038Abstract: 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: ApplicationFiled: March 8, 2007Publication date: June 28, 2007Inventors: Roger Hastings, William Drasler, Daniel Lafontaine, Anupama Sadasiva, Scott Smith
-
Publication number: 20070150037Abstract: 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: ApplicationFiled: March 8, 2007Publication date: June 28, 2007Inventors: Roger Hastings, William Drasler, Daniel Lafontaine, Anupama Sadasiva, Scott Smith
-
Publication number: 20070135882Abstract: 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: ApplicationFiled: August 28, 2006Publication date: June 14, 2007Inventors: William Drasler, Michael Pikus, Roger Hastings
-
Publication number: 20070135883Abstract: 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: ApplicationFiled: October 13, 2006Publication date: June 14, 2007Applicant: Boston Scientific Scimed, Inc.Inventors: William Drasler, Michael Pikus, Roger Hastings, Scott Smith, Martin Willard, Daniel Lafontaine, Douglas Saholt, Graig Kveen
-
Publication number: 20070129788Abstract: A venous valve-with a structural member and valve leaflets that provide a sinus.Type: ApplicationFiled: January 11, 2007Publication date: June 7, 2007Inventors: William Drasler, Mark Jenson, Jason Hill, David Sogard, Patrick Haverkost, Susan Shoemaker
-
Publication number: 20060293612Abstract: 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: ApplicationFiled: February 15, 2006Publication date: December 28, 2006Inventors: Mark Jenson, William Drasler
-
Publication number: 20060190074Abstract: A venous valve with a frame and a cover on the frame for unidirectional flow of a liquid through the valve.Type: ApplicationFiled: February 23, 2005Publication date: August 24, 2006Inventors: Jason Hill, Susan Shoemaker, William Drasler