Percutaneous bypass graft and securing system

• US 20030014063A1
• Filed: 09/12/2002
• Published: 01/16/2003
• Est. Priority Date: 11/08/1996
• Status: Abandoned Application

• Current Assignee: James G. Whayne, Russell A. Houser, Sidney D. Fleischman
• Original Assignee: James G. Whayne, Russell A. Houser, Sidney D. Fleischman
• Inventors: Fleischman, Sidney D., Whayne, James G., Houser, Russell A.
• Application Number:
  US10/243,488
• Publication Number:
  US 20030014063A1
• Time in Patent Office: Days
• US Class Current: 606/153
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61F 2/0009 placed in or outside the body opening close to the surface of the body plugging an opening in the wall of a hollow or tubular organ A61B17/0057
• CPC Class Codes: A61F 2/0022 placed deep in the body opening occluding blood vessels by internal devices A61B17/12022
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/2424 Ball valves
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

A bypass graft incorporates fixation mechanisms at its opposite ends, for securing these ends to different locations along a blood vessel, or alternatively to different locations wherein one of the locations is a different vessel or an organ defining a cavity. Mechanical fixation features such as collets or grommets can be employed, enhanced by delivery of an electrical current sufficient to heat surrounding tissue to form a thermal bond. A graft deployment system includes a tissue dilator and a needle for perforating tissue, mounted coaxially within the dilator. Intralumenal systems further include a catheter for containing the dilator.

Claims

1. An anastomotic connector comprising at least one encircling member having a first section attachable to a graft and a second section configured to expand into and contact the interior of a vessel or organ wall, wherein the first section is continuously formed with the second section.

2. The connector of claim 1 wherein the second section of the at least one encircling member is configured to bow outward to exert force against the vessel or organ wall and support a graft within a lumen defined by the vessel or organ wall.

3. The connector of claim 1 wherein the at least one encircling member is adapted to compress into a reduced profile and expand into a radially enlarged profile.

4. The connector of claim 3 wherein the at least one encircling member is adapted to compress into the reduced profile when constrained within a catheter lumen.

5. The connector of claim 3 wherein the at least one encircling member is adapted to expand into the radially enlarged profile when deployed out of a catheter lumen.

6. The connector of claim 1 wherein the second section is configured to radially enlarge into contact circumferentially against the interior of the vessel or organ wall.

7. The connector of claim 1 wherein the encircling member comprises a flexible band.

8. The connector of claim 1 further comprising a plurality of encircling members each having a first section attachable to the graft and a second section configured to expand.

9. The connector of claim 8 wherein the plurality of encircling members is configured in a crossing pattern.

10. A method for creating an anastomosis between a bypass graft and a mammalian vessel or organ segment, comprising:

providing a bypass graft having a connector attached thereto, the connector comprising at least one encircling member having a first section attachable to the graft and a second section configured to expand into and contact the interior of the vessel or organ segment, wherein the first section is continuously formed with the second section;

creating an opening within a wall of the vessel or organ segment; and

advancing the second section of the connector through the opening such that the second section enters the interior of the vessel or organ segment and expands into an expanded configuration and directly contacts the interior of the vessel or organ segment wall without further penetrating the wall.

11. The method of claim 10 wherein providing the bypass graft comprises providing a connector having a plurality of encircling members each having a first section attachable to the graft and a second section configured to expand into and contact the interior of the vessel or organ segment.

12. The method of claim 10 wherein the connector is attached to a distal end of the bypass graft.

13. The method of claim 10 wherein providing the bypass graft further comprises providing a catheter defining a lumen therethrough within which the connector is positionable prior to deployment of the connector into the interior of the vessel or organ segment.

14. The method of claim 10 wherein the second section expands into a radially enlarged profile.

15. The method of claim 14 wherein the second section is adapted to radially enlarge into contact circumferentially against the interior of the vessel or organ segment.

16. The method of claim 10 wherein the second section of the connector expands into the expanded configuration upon removal of a catheter constraining the connector.