Patents by Inventor David Trottingwolf Aldridge
David Trottingwolf Aldridge 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: 11950828Abstract: A method of creating an AV fistula between adjacent first and second vessels includes inserting a guidewire from the first vessel into the second vessel. Inserting a catheter including a proximal member and a distal member over the guidewire such that a distal tip of the distal member comes into contact with a selected anastomosis site. Moving the distal member and the proximal member together to clamp tissue surrounding the aperture between the distal face of the proximal member and a proximal face on the distal member. Applying energy to an active heating member on the proximal member to cut and form the aperture, and to weld the edges thereof in order to create a desired fistula between the two vessels. Using a passive heating member disposed on the distal member to create a heating gradient across a tissue contacting surface of the distal member.Type: GrantFiled: October 20, 2021Date of Patent: April 9, 2024Assignee: AVENU MEDICAL, INC.Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Publication number: 20220039854Abstract: A method of creating an AV fistula between adjacent first and second vessels includes inserting a guidewire from the first vessel into the second vessel. Inserting a catheter including a proximal member and a distal member over the guidewire such that a distal tip of the distal member comes into contact with a selected anastomosis site. Moving the distal member and the proximal member together to clamp tissue surrounding the aperture between the distal face of the proximal member and a proximal face on the distal member. Applying energy to an active heating member on the proximal member to cut and form the aperture, and to weld the edges thereof in order to create a desired fistula between the two vessels. Using a passive heating member disposed on the distal member to create a heating gradient across a tissue contacting surface of the distal member.Type: ApplicationFiled: October 20, 2021Publication date: February 10, 2022Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Patent number: 11172976Abstract: A catheter-based device tracks over a guidewire which has been placed from a first blood vessel into a second blood vessel. The distal tip of the catheter is advanced into the second vessel while a proximal member remains in the first vessel. Matching blunt tapered surfaces on each of the distal tip and the proximal member are clamped together, with adjacent walls of each vessel between them, after which a known, controlled pressure is applied between the two surfaces. Heat energy is then applied to the blunt surfaces for approximately 1-30 seconds to weld the walls of the two vessels together. After coaptation of the vessel walls, the heat is increased to then cut through the vessel walls to create a fistula of the desired size.Type: GrantFiled: February 19, 2019Date of Patent: November 16, 2021Assignee: Avenu Medical, Inc.Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Publication number: 20210338324Abstract: A method of creating an arteriovenous (AV) fistula between first and second vessels includes inserting a catheter comprising a proximal member and a distal member into the first vessel so that the distal member comes into contact with a selected anastomosis site. Creating an aperture between the first and second vessels advancing the distal member into the second vessel. Clamping the first and second vessels together using the proximal and distal members. Applying energy to a heating member on one of the proximal and distal members to further cut the first and second vessels and shape the aperture. The step of applying energy to the heating member further cauterizes and welds an edge of the aperture in order to create the desired fistula between the first and second vessels.Type: ApplicationFiled: July 17, 2021Publication date: November 4, 2021Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull
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Patent number: 11083518Abstract: Systems and methods for creating an arteriovenous (AV) fistula comprise an elongate member, a distal member connected to the elongate member and movable relative to the elongate member, and a heating member disposed on at least one of the movable distal member and the elongate member. The distal member comprises structure for capturing tissue to be cut to create the fistula, and the heating member is adapted to cut through the tissue to create the fistula. The elongate member comprises an elongate outer tube. A shaft connects the distal member to the elongate member, and is extendable and retractable to extend and retract the distal member relative to the elongate member.Type: GrantFiled: March 29, 2018Date of Patent: August 10, 2021Assignee: Avenu Medical, Inc.Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull
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Publication number: 20190247107Abstract: A catheter-based device tracks over a guidewire which has been placed from a first blood vessel into a second blood vessel. The distal tip of the catheter is advanced into the second vessel while a proximal member remains in the first vessel. Matching blunt tapered surfaces on each of the distal tip and the proximal member are clamped together, with adjacent walls of each vessel between them, after which a known, controlled pressure is applied between the two surfaces. Heat energy is then applied to the blunt surfaces for approximately 1-30 seconds to weld the walls of the two vessels together. After coaptation of the vessel walls, the heat is increased to then cut through the vessel walls to create a fistula of the desired size.Type: ApplicationFiled: February 19, 2019Publication date: August 15, 2019Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Patent number: 10231771Abstract: A catheter-based device tracks over a guidewire which has been placed from a first blood vessel into a second blood vessel. The distal tip of the catheter is advanced into the second vessel while a proximal member remains in the first vessel. Matching blunt tapered surfaces on each of the distal tip and the proximal member are clamped together, with adjacent walls of each vessel between them, after which a known, controlled pressure is applied between the two surfaces. Heat energy is then applied to the blunt surfaces for approximately 1-30 seconds to weld the walls of the two vessels together. After coaptation of the vessel walls, the heat is increased to then cut through the vessel walls to create a fistula of the desired size.Type: GrantFiled: October 17, 2016Date of Patent: March 19, 2019Assignee: Avenu Medical, Inc.Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Publication number: 20180310990Abstract: Systems and methods for creating an arteriovenous (AV) fistula comprise an elongate member, a distal member connected to the elongate member and movable relative to the elongate member, and a heating member disposed on at least one of the movable distal member and the elongate member. The distal member comprises structure for capturing tissue to be cut to create the fistula, and the heating member is adapted to cut through the tissue to create the fistula. The elongate member comprises an elongate outer tube. A shaft connects the distal member to the elongate member, and is extendable and retractable to extend and retract the distal member relative to the elongate member.Type: ApplicationFiled: March 29, 2018Publication date: November 1, 2018Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull
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Patent number: 9931164Abstract: Systems and methods for creating an arteriovenous (AV) fistula comprise an elongate member, a distal member connected to the elongate member and movable relative to the elongate member, and a heating member disposed on at least one of the movable distal member and the elongate member. The distal member comprises structure for capturing tissue to be cut to create the fistula, and the heating member is adapted to cut through the tissue to create the fistula. The elongate member comprises an elongate outer tube. A shaft connects the distal member to the elongate member, and is extendable and retractable to extend and retract the distal member relative to the elongate member.Type: GrantFiled: April 22, 2016Date of Patent: April 3, 2018Assignees: Avenu Medical, Inc., Baja Research, LLCInventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull
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Publication number: 20170128118Abstract: A catheter-based device tracks over a guidewire which has been placed from a first blood vessel into a second blood vessel. The distal tip of the catheter is advanced into the second vessel while a proximal member remains in the first vessel. Matching blunt tapered surfaces on each of the distal tip and the proximal member are clamped together, with adjacent walls of each vessel between them, after which a known, controlled pressure is applied between the two surfaces. Heat energy is then applied to the blunt surfaces for approximately 1-30 seconds to weld the walls of the two vessels together. After coaptation of the vessel walls, the heat is increased to then cut through the vessel walls to create a fistula of the desired size.Type: ApplicationFiled: October 17, 2016Publication date: May 11, 2017Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Patent number: 9474562Abstract: A catheter-based device tracks over a guidewire which has been placed from a first blood vessel into a second blood vessel. The distal tip of the catheter is advanced into the second vessel while a proximal member remains in the first vessel. Matching blunt tapered surfaces on each of the distal tip and the proximal member are clamped together, with adjacent walls of each vessel between them, after which a known, controlled pressure is applied between the two surfaces. Heat energy is then applied to the blunt surfaces for approximately 1-30 seconds to weld the walls of the two vessels together. After coaptation of the vessel walls, the heat is increased to then cut through the vessel walls to create a fistula of the desired size.Type: GrantFiled: February 8, 2013Date of Patent: October 25, 2016Assignee: Avenu Medical, Inc.Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull, Gene Reu
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Patent number: 9452015Abstract: A device for creating an arteriovenous (AV) fistula comprises an elongate member, a distal member connected to the elongate member and movable relative to the elongate member, and a heating member disposed on at least one of the movable distal member and the elongate member. The distal member comprises structure for capturing tissue to be cut to create the fistula, and the heating member is adapted to cut through the tissue to create the fistula. The elongate member comprises an elongate outer tube. A shaft connects the distal member to the elongate member, and is extendable and retractable to extend and retract the distal member relative to the elongate member.Type: GrantFiled: June 15, 2011Date of Patent: September 27, 2016Assignees: Avenu Medical, Inc., Baja Research, LLCInventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull
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Publication number: 20160235410Abstract: Systems and methods for creating an arteriovenous (AV) fistula comprise an elongate member, a distal member connected to the elongate member and movable relative to the elongate member, and a heating member disposed on at least one of the movable distal member and the elongate member. The distal member comprises structure for capturing tissue to be cut to create the fistula, and the heating member is adapted to cut through the tissue to create the fistula. The elongate member comprises an elongate outer tube. A shaft connects the distal member to the elongate member, and is extendable and retractable to extend and retract the distal member relative to the elongate member.Type: ApplicationFiled: April 22, 2016Publication date: August 18, 2016Inventors: Brad M. Kellerman, David Trottingwolf Aldridge, David K. Wrolstad, Mark A. Ritchart, Jeffrey E. Hull
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Patent number: 9345465Abstract: A system for repairing separated body tissues includes a tensioning device having a movable housing, a pair of stationary tensioning tips distal to and attached to the movable housing, and suture tensioning jaws on a proximal end of the movable housing. The tensioning jaws are pivotable between open and closed orientations. A buckle is provided for securing and tensioning suture and the like, having a first plate, a second plate spaced from the first plate so that there is a gap between the first and second plates, and a lock bar within the gap and movable between a first position wherein suture may be freely passed through the gap as tensioning of the suture proceeds, and a second locking position wherein the suture is clamped in place within the gap. A tension tab is provided for securing the lock bar in its first position until tension on the suture exceeds a predetermined level.Type: GrantFiled: January 11, 2013Date of Patent: May 24, 2016Assignee: Dallen Medical, Inc.Inventors: David Trottingwolf Aldridge, Seth Arnold Foerster
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Publication number: 20150216576Abstract: A tensioning device comprises an elongate member, preferably a band, and a frame having first and second sides. The band has a first end that is attachable to the first side of the frame and a second end that is releasably securable to the second side of the frame. A movable clamping member on the frame secures the second end of the band to the second side of the frame by cinching the second end of the band between an engagement surface on the band and a mating engagement surface on the second side of the frame. A restraining member is provided for restraining the clamping member to a first position spaced from the mating locking surface on the second side of the frame, when the restraining member is in a restraining orientation. The restraining member is movable out of the restraining orientation after the band is tensioned to a predetermined level using the second end.Type: ApplicationFiled: April 17, 2015Publication date: August 6, 2015Applicant: Dallen Medical, Inc.Inventors: Seth Arnold Foerster, David Trottingwolf Aldridge
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Patent number: 9017330Abstract: A tensioning device comprises an elongate member, preferably a band, and a frame having first and second sides. The band has a first end that is attachable to the first side of the frame and a second end that is releasably securable to the second side of the frame. A movable clamping member on the frame secures the second end of the band to the second side of the frame by cinching the second end of the band between an engagement surface on the band and a mating engagement surface on the second side of the frame. A restraining member is provided for restraining the clamping member to a first position spaced from the mating locking surface on the second side of the frame, when the restraining member is in a restraining orientation. The restraining member is movable out of the restraining orientation after the band is tensioned to a predetermined level using the second end.Type: GrantFiled: February 5, 2014Date of Patent: April 28, 2015Assignee: Dallen Medical, Inc.Inventors: Seth Arnold Foerster, David Trottingwolf Aldridge
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Publication number: 20140371749Abstract: A surgical tensioning device for holding separated tissues in contact with one another. The device comprises a frame having two opposing first and second sides and a lower surface and an upper surface, and a band for extending through and around said separated tissues to be held together in conjunction with said frame. The band has two ends releasably attached to the sides of the frame. When the ends are secured to the sides of the frame, the band holds separated tissues together and establishes a path of tension along its length that extends linearly between the two ends of the band.Type: ApplicationFiled: April 21, 2014Publication date: December 18, 2014Applicant: DALLEN MEDICAL, INC.Inventors: Seth Arnold Foerster, David Trottingwolf Aldridge
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Publication number: 20140214054Abstract: A tensioning device comprises an elongate member, preferably a band, and a frame having first and second sides. The band has a first end that is attachable to the first side of the frame and a second end that is releasably securable to the second side of the frame. A movable clamping member on the frame secures the second end of the band to the second side of the frame by cinching the second end of the band between an engagement surface on the band and a mating engagement surface on the second side of the frame. A restraining member is provided for restraining the clamping member to a first position spaced from the mating locking surface on the second side of the frame, when the restraining member is in a restraining orientation. The restraining member is movable out of the restraining orientation after the band is tensioned to a predetermined level using the second end.Type: ApplicationFiled: February 5, 2014Publication date: July 31, 2014Applicant: DALLEN MEDICAL, INC.Inventors: Seth Arnold Foerster, David Trottingwolf Aldridge
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Patent number: 8715297Abstract: A surgical tensioning device for holding separated tissues in contact with one another. The device comprises a frame having two opposing first and second sides and a lower surface and an upper surface, and a band for extending through and around said separated tissues to be held together in conjunction with said frame. The band has two ends releasably attached to the sides of the frame. When the ends are secured to the sides of the frame, the band holds separated tissues together and establishes a path of tension along its length that extends linearly between the two ends of the band.Type: GrantFiled: July 14, 2010Date of Patent: May 6, 2014Assignee: Dallen Medical, Inc.Inventors: Seth Arnold Foerster, David Trottingwolf Aldridge
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Patent number: 8668696Abstract: A tensioning device comprises an elongate member, preferably a band, and a frame having first and second sides. The band has a first end that is attachable to the first side of the frame and a second end that is releasably securable to the second side of the frame. A movable clamping member on the frame secures the second end of the band to the second side of the frame by cinching the second end of the band between an engagement surface on the band and a mating engagement surface on the second side of the frame. A restraining member is provided for restraining the clamping member to a first position spaced from the mating locking surface on the second side of the frame, when the restraining member is in a restraining orientation. The restraining member is movable out of the restraining orientation after the band is tensioned to a predetermined level using the second end.Type: GrantFiled: August 17, 2010Date of Patent: March 11, 2014Assignee: Dallen Medical, Inc.Inventors: Seth Arnold Foerster, David Trottingwolf Aldridge