Patents Assigned to Shockwave Medical, Inc.
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Patent number: 10420569Abstract: A guide wire, for use, for example, in guiding an elongated catheter through an artery or vein of a mammalian body having a stenosis and/or an occlusion therein, includes an elongated conductor having a longitudinal dimension, a proximal end and a distal end. The guide wire further includes an insulator overlying the elongated conductor. The insulator exposes a portion of the longitudinal dimension of the elongated conductor to form an electrode. The elongated conductor is arranged to be connected to a source of high voltage pulses to cause electrical arcs at the electrode that in turn form steam bubbles and shock waves to break the stenosis and/or open the occlusion and permit the guide wire to pass there through. Other embodiments are directed to a system including the guide wire and a method of using the guide wire.Type: GrantFiled: July 17, 2017Date of Patent: September 24, 2019Assignee: SHOCKWAVE MEDICAL, INC.Inventor: John M. Adams
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Publication number: 20190269426Abstract: Described herein are low-profile electrodes for use with an angioplasty shockwave catheter. A low-profile electrode assembly may have an inner electrode, an insulating layer disposed over the inner electrode such that an opening in the insulating layer is aligned with the inner electrode, and an outer electrode sheath disposed over the insulating layer such that an opening in the outer electrode sheath is coaxially aligned with the opening in the insulating layer. This layered configuration allows for the generation of shockwaves that propagate outward from the side of the catheter. In some variations, the electrode assembly has a second inner electrode, and the insulating layer and outer electrode may each have a second opening that are coaxially aligned with the second inner electrode. An angioplasty shockwave catheter may have a plurality of such low-profile electrode assemblies along its length to break up calcified plaques along a length of a vessel.Type: ApplicationFiled: January 4, 2019Publication date: September 5, 2019Applicant: Shockwave Medical, Inc.Inventors: Doug HAKALA, John M. M. ADAMS, Khoi T. LE, Show-Mean Steve WU
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Publication number: 20190254692Abstract: A system that breaks calcium in a liquid includes a catheter including first and second electrodes arranged to receive there-across a high electrical voltage at an initial low current. The high electrical voltage causes an electrical arc to form across the electrodes creating a gas bubble within the liquid, a high current to flow through the electrodes, and a mechanical shock wave. A power source provides the electrodes with the high electrical voltage at the initial current and terminates the high electrical voltage in response to the high current flow through the electrodes.Type: ApplicationFiled: December 17, 2018Publication date: August 22, 2019Applicant: Shockwave Medical, Inc.Inventors: Doug HAKALA, John M. M. ADAMS, Randy HOLMBERG
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Patent number: 10357264Abstract: A translatable shock wave treatment apparatus is suitable for use in treating calcified lesions in vascular structures having small diameters. An elongate member carrying a collapsed angioplasty balloon is first inserted into the occluded blood vessel. The angioplasty balloon is inflated with a conducting fluid to pre-dilate the narrow blood vessel prior to introducing electrodes and applying shock wave therapy. After the blood vessel is at least partially opened, a translatable electrode carrier equipped with one or more shock wave emitters is advanced into the angioplasty balloon. Shock waves are then propagated through the fluid to impart energy to calcified plaques along the vessel walls, thereby softening the calcified lesions. Following the shock wave treatment, multiple inflation and deflation cycles of the angioplasty balloon can be administered to gently compress the softened lesion and complete dilation of the blood vessel.Type: GrantFiled: December 6, 2016Date of Patent: July 23, 2019Assignee: SHOCKWAVE MEDICAL, INC.Inventor: Denny Kat-Kuoy
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Publication number: 20190150960Abstract: The invention provides a device for generating shock waves. The device may comprise an elongated tube and a conductive sheath circumferentially mounted around the elongated tube. The device may further comprise first and second insulated wires extending along the outer surface of the elongated tube. A portion of the first insulated wire is removed to form a first inner electrode, which is adjacent to a first side edge of the conductive sheath. A portion of the second insulated wire is removed to form a second inner electrode, which is adjacent to a second side edge of the conductive sheath. Responsive to a high voltage being applied across the first inner electrode and the second inner electrode, a first shock wave is created across the first side edge and the first inner electrode, and a second shock wave is created across the second side edge and the second inner electrode.Type: ApplicationFiled: November 17, 2017Publication date: May 23, 2019Applicant: SHOCKWAVE MEDICAL, INC.Inventors: Hoa D. Nguyen, Khanh Vo
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Patent number: 10226265Abstract: Described here are devices and methods for forming shock waves. The devices may comprise an axially extending elongate member. A first electrode pair may comprise a first electrode and a second electrode. The first electrode pair may be provided on the elongate member and positioned within a conductive fluid. A controller may be coupled to the first electrode pair. The controller may be configured to deliver a series of individual pulses to the first electrode pair, where each pulse creates a shock wave. The controller may cause current to flow through the electrode pair in a first direction for some of the pulses in the series and in a second direction opposite the first direction for the remaining pulses in the series.Type: GrantFiled: April 25, 2016Date of Patent: March 12, 2019Assignee: SHOCKWAVE MEDICAL, INC.Inventors: Vincent Wenchung Ku, Camilo Perez Saaibi
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Publication number: 20190069916Abstract: A valvuloplasty system comprises a balloon adapted to be placed adjacent leaflets of a valve. The balloon is inflatable with a liquid. The system further includes a shock wave generator within the balloon that produces shock waves. The shock waves propagate through the liquid and impinge upon the valve to decalcify and open the valve.Type: ApplicationFiled: November 7, 2018Publication date: March 7, 2019Applicant: SHOCKWAVE MEDICAL, INC.Inventors: Daniel HAWKINS, John M. ADAMS
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Patent number: 10206698Abstract: Described herein are low-profile electrodes for use with an angioplasty shockwave catheter. A low-profile electrode assembly may have an inner electrode, an insulating layer disposed over the inner electrode such that an opening in the insulating layer is aligned with the inner electrode, and an outer electrode sheath disposed over the insulating layer such that an opening in the outer electrode sheath is coaxially aligned with the opening in the insulating layer. This layered configuration allows for the generation of shockwaves that propagate outward from the side of the catheter. In some variations, the electrode assembly has a second inner electrode, and the insulating layer and outer electrode may each have a second opening that are coaxially aligned with the second inner electrode. An angioplasty shockwave catheter may have a plurality of such low-profile electrode assemblies along its length to break up calcified plaques along a length of a vessel.Type: GrantFiled: July 27, 2016Date of Patent: February 19, 2019Assignee: SHOCKWAVE MEDICAL, INC.Inventors: Doug Hakala, John M. Adams, Khoi T. Le, Show-Mean Steve Wu
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Patent number: 10159505Abstract: A system that breaks calcium in a liquid includes a catheter including first and second electrodes arranged to receive there-across a high electrical voltage at an initial low current. The high electrical voltage causes an electrical arc to form across the electrodes creating a gas bubble within the liquid, a high current to flow through the electrodes, and a mechanical shock wave. A power source provides the electrodes with the high electrical voltage at the initial current and terminates the high electrical voltage in response to the high current flow through the electrodes.Type: GrantFiled: March 9, 2016Date of Patent: December 25, 2018Assignee: SHOCKWAVE MEDICAL, INC.Inventors: Doug Hakala, John M. Adams, Randy Holmberg
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Publication number: 20180360482Abstract: Described herein is a shock wave device for the treatment of vascular occlusions. The shock wave device includes an outer covering and an inner member inner connected at a distal end of the device. First and second conductive wires extend along the length of the device within the volume between the outer covering and the inner member. A conductive emitter band circumscribes the ends of the first and second wires to form a first spark gap between the end of the first wire and the emitter band and a second spark gap between the end of the second wire and the emitter band. When the volume is filled with conductive fluid and a high voltage pulse is applied across the first and second wires, first and second shock waves can be initiated from the first and second spark gaps.Type: ApplicationFiled: May 24, 2018Publication date: December 20, 2018Applicant: Shockwave Medical, Inc.Inventor: Hoa D. NGUYEN
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Patent number: 10149690Abstract: A valvuloplasty system comprises a balloon adapted to be placed adjacent leaflets of a valve. The balloon is inflatable with a liquid. The system further includes a shock wave generator within the balloon that produces shock waves. The shock waves propagate through the liquid and impinge upon the valve to decalcify and open the valve.Type: GrantFiled: July 18, 2016Date of Patent: December 11, 2018Assignee: SHOCKWAVE MEDICAL, INC.Inventors: Daniel Hawkins, John M. Adams
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Publication number: 20180317946Abstract: A system for breaking obstructions in body lumens includes a catheter including an elongated carrier, a balloon about the carrier in sealed relation thereto, the balloon being arranged to receive a fluid therein that inflates the balloon, and an arc generator including at least one electrode within the balloon that forms a mechanical shock wave within the balloon. The system further includes a power source that provides electrical energy to the arc generator.Type: ApplicationFiled: July 5, 2018Publication date: November 8, 2018Applicant: SHOCKWAVE MEDICAL, INC.Inventors: John M. ADAMS, Daniel HAWKINS, Clifton A. ALFERNESS
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Publication number: 20180256250Abstract: An apparatus includes a balloon adapted to be placed adjacent a calcified region of a body. The balloon is inflatable with a liquid. The apparatus further includes a shock wave generator within the balloon that produces shock waves that propagate through the liquid for impinging upon the calcified region adjacent the balloon. The shock wave generator includes a plurality of shock wave sources distributed within the balloon.Type: ApplicationFiled: May 14, 2018Publication date: September 13, 2018Applicant: Shockwave Medical, Inc.Inventors: John M. ADAMS, Thomas G. GOFF, Doug HAKALA
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Patent number: 10039561Abstract: A system for breaking obstructions in body lumens includes a catheter including an elongated carrier, a balloon about the carrier in sealed relation thereto, the balloon being arranged to receive a fluid therein that inflates the balloon, and an arc generator including at least one electrode within the balloon that forms a mechanical shock wave within the balloon. The system further includes a power source that provides electrical energy to the arc generator.Type: GrantFiled: March 17, 2015Date of Patent: August 7, 2018Assignee: SHOCKWAVE MEDICAL, INC.Inventors: John M. Adams, Daniel Hawkins, Clifton A. Alferness
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Patent number: 9993292Abstract: An apparatus includes a balloon adapted to be placed adjacent a calcified region of a body. The balloon is inflatable with a liquid. The apparatus further includes a shock wave generator within the balloon that produces shock waves that propagate through the liquid for impinging upon the calcified region adjacent the balloon. The shock wave generator includes a plurality of shock wave sources distributed within the balloon.Type: GrantFiled: March 30, 2017Date of Patent: June 12, 2018Assignee: SHOCKWAVE MEDICAL, INC.Inventors: John Adams, Thomas G. Goff, Doug Hakala
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Publication number: 20180098779Abstract: Described herein are shock wave devices and methods for the treatment of calcified heart valves. One variation of a shock wave device may comprise an elongated flexible tube carried by a sheath. The tube may have a fluid input end, which may be located near a proximal end of the sheath. The tube may include a loop portion. The loop portion may be configured to be at least partially accommodated within a cusp of the heart valve. The tube may be fillable with a conductive fluid. In some variations, the shock wave device may include an array of electrode pairs associated with a plurality of wires positioned within the loop portion of a tube. The electrode pairs may be electrically connectable to a voltage source and configured to generate shock waves in the conductive fluid in response to voltage pulses.Type: ApplicationFiled: October 4, 2017Publication date: April 12, 2018Applicant: SHOCKWAVE MEDICAL, INC.Inventors: Rainier BETELIA, Hoa D. NGUYEN, Camilo Perez SAAIBI
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Publication number: 20180028208Abstract: A valvuloplasty system comprises a balloon adapted to be placed adjacent leaflets of a valve. The balloon is inflatable with a liquid. The system further includes a shock wave generator within the balloon that produces shock waves that propagate through the liquid for impinging upon the valve. The shock wave generator is moveable within the balloon to vary shock wave impingement on the valve.Type: ApplicationFiled: October 10, 2017Publication date: February 1, 2018Applicant: SHOCKWAVE MEDICAL, INC.Inventors: John M. ADAMS, Thomas G. GOFF
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Patent number: 9867629Abstract: Described here are angioplasty balloon devices for generating shock waves to break up calcified plaques along a length of a vessel and methods of making such devices. Generally, the devices may be used in angioplasty and/or valvuloplasty procedures, but may alternatively be used in other applications. In some variations, the device may include an elongate member, a plurality of electrode assemblies, and at least one tubular sleeve interposed between adjacent or neighboring electrode assemblies that form a continuous outer profile between the electrode assemblies. These devices may have a smooth, continuous outer profile without substantial profile transitions and/or may have stiffening sections between electrode assemblies.Type: GrantFiled: July 29, 2014Date of Patent: January 16, 2018Assignee: SHOCKWAVE MEDICAL, INC.Inventor: Daniel Hawkins
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Patent number: 9814476Abstract: A valvuloplasty system includes a balloon adapted to be placed adjacent leaflets of a valve. The balloon is inflatable with a liquid. The system further includes a shock wave generator within the balloon that produces shock waves that propagate through the liquid for impinging upon the valve. The shock wave generator is moveable within the balloon to vary shock wave impingement on the valve.Type: GrantFiled: February 8, 2016Date of Patent: November 14, 2017Assignee: SHOCKWAVE MEDICAL, INC.Inventors: John M. Adams, Thomas G. Goff
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Patent number: 9730715Abstract: A guide wire, for use, for example, in guiding an elongated catheter through an artery or vein of a mammalian body having a stenosis and/or an occlusion therein, includes an elongated conductor having a longitudinal dimension, a proximal end and a distal end. The guide wire further includes an insulator overlying the elongated conductor. The insulator exposes a portion of the longitudinal dimension of the elongated conductor to form an electrode. The elongated conductor is arranged to be connected to a source of high voltage pulses to cause electrical arcs at the electrode that in turn form steam bubbles and shock waves to break the stenosis and/or open the occlusion and permit the guide wire to pass there through. Other embodiments are directed to a system including the guide wire and a method of using the guide wire.Type: GrantFiled: May 8, 2014Date of Patent: August 15, 2017Assignee: SHOCKWAVE MEDICAL, INC.Inventor: John M. Adams