公开(公告)号：US11950828B2

公开(公告)日：2024-04-09

申请号：US17451646

申请日：2021-10-20

Applicant: Avenu Medical, Inc.

Inventor： Brad M. Kellerman ,  David Trottingwolf Aldridge ,  David K. Wrolstad ,  Mark A. Ritchart ,  Jeffrey E. Hull ,  Gene Reu

IPC: A61B18/08 ,  A61B17/11 ,  A61B18/00 ,  A61B18/04 ,  A61B18/14

CPC classification number: A61B18/082 ,  A61B17/11 ,  A61B18/04 ,  A61B18/1492 ,  A61B2017/1107 ,  A61B2017/1125 ,  A61B2017/1139 ,  A61B2018/00095 ,  A61B2018/0013 ,  A61B2018/00184 ,  A61B2018/00404 ,  A61B2018/00601 ,  A61B2018/00619

Abstract: 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.

公开(公告)号：US20220401141A1

公开(公告)日：2022-12-22

申请号：US17820470

申请日：2022-08-17

Applicant: Avenu Medical, Inc.

Inventor： Gene Reu ,  Brad M. Kellerman ,  David K. Wrolstad

IPC: A61B18/08

Abstract: A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heating element, is disposed on at least one of the distal tapered end surface and the proximal tapered end surface. A second heating assembly, comprising a passive non-energized heat spreader, is disposed on the other one of the distal tapered end surface and the proximal tapered end surface. The distal tapered end surface and the proximal tapered end surface are adapted to contact opposing sides of a tissue portion to create the fistula. The taper of the proximal tapered end surface matches the taper of the distal tapered end surface, so that the two surfaces match one another.

公开(公告)号：US20190247107A1

公开(公告)日：2019-08-15

申请号：US16279923

申请日：2019-02-19

Applicant: Avenu Medical, Inc.

Inventor： Brad M. Kellerman ,  David Trottingwolf Aldridge ,  David K. Wrolstad ,  Mark A. Ritchart ,  Jeffrey E. Hull ,  Gene Reu

IPC: A61B18/08 ,  A61B18/14 ,  A61B18/04 ,  A61B17/11

CPC classification number: A61B18/082 ,  A61B17/11 ,  A61B18/04 ,  A61B18/1492 ,  A61B2017/1107 ,  A61B2017/1125 ,  A61B2017/1139 ,  A61B2018/00095 ,  A61B2018/0013 ,  A61B2018/00184 ,  A61B2018/00404 ,  A61B2018/00601 ,  A61B2018/00619

Abstract: 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.

公开(公告)号：US11172976B2

公开(公告)日：2021-11-16

申请号：US16279923

申请日：2019-02-19

Applicant: Avenu Medical, Inc.

Inventor： Brad M. Kellerman ,  David Trottingwolf Aldridge ,  David K. Wrolstad ,  Mark A. Ritchart ,  Jeffrey E. Hull ,  Gene Reu

IPC: A61B18/08 ,  A61B17/11 ,  A61B18/14 ,  A61B18/04 ,  A61B18/00

Abstract: 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.

公开(公告)号：US10722285B2

公开(公告)日：2020-07-28

申请号：US15254754

申请日：2016-09-01

Applicant: Avenu Medical, Inc.

Inventor： Gene Reu ,  Brad M. Kellerman ,  David K. Wrolstad

IPC: A61B18/04 ,  A61B18/08 ,  A61B18/00

Abstract: A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heating element, is disposed on at least one of the distal tapered end surface and the proximal tapered end surface. A second heating assembly, comprising a passive non-energized heat spreader, is disposed on the other one of the distal tapered end surface and the proximal tapered end surface. The distal tapered end surface and the proximal tapered end surface are adapted to contact opposing sides of a tissue portion to create the fistula. The taper of the proximal tapered end surface matches the taper of the distal tapered end surface, so that the two surfaces match one another.

公开(公告)号：US20170128118A1

公开(公告)日：2017-05-11

申请号：US15295781

申请日：2016-10-17

Applicant: Avenu Medical, Inc.

Inventor： Brad M. Kellerman ,  David Trottingwolf Aldridge ,  David K. Wrolstad ,  Mark A. Ritchart ,  Jeffrey E. Hull ,  Gene Reu

IPC: A61B18/08

CPC classification number: A61B18/082 ,  A61B17/11 ,  A61B18/04 ,  A61B18/1492 ,  A61B2017/1107 ,  A61B2017/1125 ,  A61B2017/1139 ,  A61B2018/00095 ,  A61B2018/0013 ,  A61B2018/00184 ,  A61B2018/00404 ,  A61B2018/00601 ,  A61B2018/00619

Abstract: 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.

公开(公告)号：US11457970B2

公开(公告)日：2022-10-04

申请号：US16903084

申请日：2020-06-16

Applicant: Avenu Medical, Inc.

Inventor： Gene Reu ,  Brad M. Kellerman ,  David K. Wrolstad

IPC: A61B18/08 ,  A61B18/00

Abstract: A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heating element, is disposed on at least one of the distal tapered end surface and the proximal tapered end surface. A second heating assembly, comprising a passive non-energized heat spreader, is disposed on the other one of the distal tapered end surface and the proximal tapered end surface. The distal tapered end surface and the proximal tapered end surface are adapted to contact opposing sides of a tissue portion to create the fistula. The taper of the proximal tapered end surface matches the taper of the distal tapered end surface, so that the two surfaces match one another.

公开(公告)号：US20170086904A1

公开(公告)日：2017-03-30

申请号：US15254754

申请日：2016-09-01

Applicant: Avenu Medical, Inc.

Inventor： Gene Reu ,  Brad M. Kellerman ,  David K. Wrolstad

IPC: A61B18/08

Abstract: A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heating element, is disposed on at least one of the distal tapered end surface and the proximal tapered end surface. A second heating assembly, comprising a passive non-energized heat spreader, is disposed on the other one of the distal tapered end surface and the proximal tapered end surface. The distal tapered end surface and the proximal tapered end surface are adapted to contact opposing sides of a tissue portion to create the fistula. The taper of the proximal tapered end surface matches the taper of the distal tapered end surface, so that the two surfaces match one another.

公开(公告)号：US20200305951A1

公开(公告)日：2020-10-01

申请号：US16903084

申请日：2020-06-16

Applicant: Avenu Medical, Inc.

Inventor： Gene Reu ,  Brad M. Kellerman ,  David K. Wrolstad

IPC: A61B18/08

Abstract: A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heating element, is disposed on at least one of the distal tapered end surface and the proximal tapered end surface. A second heating assembly, comprising a passive non-energized heat spreader, is disposed on the other one of the distal tapered end surface and the proximal tapered end surface. The distal tapered end surface and the proximal tapered end surface are adapted to contact opposing sides of a tissue portion to create the fistula. The taper of the proximal tapered end surface matches the taper of the distal tapered end surface, so that the two surfaces match one another.

公开(公告)号：US10231771B2

公开(公告)日：2019-03-19

申请号：US15295781

申请日：2016-10-17

Applicant: Avenu Medical, Inc.

Inventor： Brad M. Kellerman ,  David Trottingwolf Aldridge ,  David K. Wrolstad ,  Mark A. Ritchart ,  Jeffrey E. Hull ,  Gene Reu

IPC: A61B18/08 ,  A61B18/04 ,  A61B17/11 ,  A61B18/14 ,  A61B18/00

Abstract: 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.