Methods for forming magnetic vascular anastomoses

• US 6,652,540 B1
• Filed: 08/11/2000
• Issued: 11/25/2003
• Est. Priority Date: 02/13/1998
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Ventrica, Inc. (Medtronic Plc)
• Inventors: Foley, Mark J., Cole, David H.
• Primary Examiner(s): Hale, Gloria M.
• Application Number:
  US09/637,137
• Time in Patent Office: 1,201 Days
• Field of Search: 606/153, 606/215, 606/151, 606/156, 606/216, 128/898
• US Class Current: 606/153
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/0643 with separate closing member, e.g. for interlocking with staple
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• 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 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1132 End-to-end connections
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections Y-shaped blood vessel prostheses A61F2002/065
• CPC Class Codes: A61B 2017/1139 Side-to-side connections, e.g. shunt or X-connections
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/94 : Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: A61F 2002/30079 : magnetic
• CPC Class Codes: A61F 2210/0076 : multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2210/009 : magnetic
• CPC Class Codes: H01F 41/026 : protecting methods against environmental influences, e.g. oxygen, by surface treatment magnetic particles with skin H01F1/061, H01F1/09, H01F1/24, H01F1/33 and G11B5/706
• CPC Class Codes: H01F 7/0263 : Closures, bags, bands, engagement devices with male and female parts

Abstract

Methods and devices use magnetic force to form a magnetic port in a hollow body. Additional methods and devices form anastomoses between two or more hollow bodies. First and second anastomotic securing components create a fluid-tight connection between the lumens of the hollow bodies. End-to-side, side-to-side and end-to-end anastomoses can be created without using suture or any other type of mechanical fasteners, although mechanical attachment structure may be used in conjunction with the magnetic attachment. The securing components have magnetic, ferromagnetic or electromagnetic properties and may include one or more materials, for example, magnetic and nonmagnetic materials arranged in a laminated structure. The system of anastomotic securing components may be used in many different applications including the treatment of cardiovascular disease, peripheral vascular disease, forming AV shunts, etc. The system may be sized and configured for forming an anastomosis in or between a specific hollow body, for example, a coronary artery, the aorta, a radial artery, etc.

Claims

1. A method for forming a vascular anastomosis, the method comprising the steps of:

providing a first component and a second component, the first and second components being magnetically attracted to one another, the first component having an expandable portion;

selecting a first blood vessel having a lumen;

selecting a second blood vessel having a lumen;

providing an opening communicating with the lumen of the first blood vessel;

expanding the expandable portion of the first component to secure the first component to the first blood vessel adjacent the opening; and

approximating the first and second components so that the first and second components are magnetically attracted to one another thereby coupling the first and second blood vessels together to place the lumens in communication with one another.

2. The method of claim 1, wherein the expanding step is carried out with the expandable portion being at least partially positioned within the lumen of the first blood vessel.

3. The method of claim 1, wherein the expandable portion is a stent and the expanding step is carried out by expanding the stent.

4. The method of claim 1, wherein the expanding step is carried out with the expandable portion expanding radially outward into contact with the wall of the first blood vessel.

5. The method of claim 1, wherein the approximating step is carried out with the first and second components contacting one another.

6. The method of claim 1, further comprising the step of providing an opening in communication with the lumen of the second blood vessel.

7. The method of claim 1, wherein the securing step is carried out without penetrating or everting the first blood vessel.

8. The method of claim 1, wherein the securing and approximating steps are carried out without everting either of the first and second blood vessels.

9. The method of claim 1, wherein the securing step is carried out by using an adhesive to adhere the first component to the first blood vessel.

10. The method of claim 1, wherein the securing step is carried out by compressing a wall of the first blood vessel with the first component.

11. The method of claim 10, wherein the securing step is carried out by using magnetism to compress and secure the first component to the first blood vessel.

12. The method of claim 1, further comprising the step of securing the second component to the second blood vessel before the approximating step.

13. The method of claim 12, wherein the securing step is carried out so that the first component and the first blood vessel form a first contact surface and the second component and the second blood vessel form a second contact surface, wherein the second contact surface is formed at least in part by an exposed portion of the second component, and the approximating step is carried out with the exposed portion of the second component contacting the first contact surface.

14. The method of claim 13, wherein the approximating step is carried out with the exposed portion contacting the first blood vessel.

15. The method of claim 13, wherein the approximating step is carried out with the exposed portion contacting the first component.

16. The method of claim 13, wherein the providing and approximating steps are carried out by using magnetic attractive force between the first and second components, the force being sufficient to maintain the anastomosis between the first and second blood vessels.

17. The method of claim 1, wherein the providing step is carried out with each of the first and second components including a magnetic material.

18. The method of claim 1, wherein the providing step is carried out with only one of the first and second components including a magnetic material.

19. The method of claim 1, further comprising the step of preventing the first and second components from migrating toward one another beyond a predetermined distance.

20. The method of claim 1, wherein the selecting step is carried out with the first blood vessel being a coronary artery.

21. The method of claim 1, wherein the selecting step is carried out with the first blood vessel being the aorta.

22. The method of claim 1, wherein the selecting step is carried out with the second blood vessel being a vessel selected from the group consisting of natural blood vessels and vessels formed of synthetic material.

23. The method of claim 1, wherein the selecting step is carried out with the first and second blood vessels being a vessel selected from the group consisting of natural blood vessels and vessels formed of synthetic material.

24. A method for forming a side-to-side vascular anastomosis between a side wall of a first blood vessel and a side wall of a second blood vessel, the method comprising the steps of:

providing a first component and a second component, the first and second components being magnetically attracted to one another;

selecting a first blood vessel having a lumen and a second blood vessel having a lumen, the first and second blood vessels each having an opening in a side wall thereof;

securing the first component to the side wall of the first vessel; and

moving the second vessel toward the first vessel so that the first and second components are magnetically attracted to one another, thereby coupling the opening in the side wall of the second blood vessel to the opening in the side wall of the first blood vessel to place the lumens in communication with one another;

wherein the moving step is performed after securing the first component to the first vessel.

25. The method of claim 24, wherein the moving step is carried out until the first and second components contact one another.

26. The method of claim 24, wherein the securing step is carried out without penetrating or everting the first blood vessel.

27. The method of claim 24, wherein the securing and moving steps are carried out without everting either of the first and second blood vessels.

28. The method of claim 24, wherein the securing step is carried out by using an adhesive to adhere the first component to the first blood vessel.

29. The method of claim 24, wherein the securing step is carried out by compressing a wall of the first blood vessel with the first component.

30. The method of claim 24, wherein the securing step is carried out by using magnetism to compress and secure the first component to the first blood vessel.

31. The method of claim 24, further comprising the step of securing the second component to the second blood vessel before the moving step.

32. The method of claim 24, wherein the securing steps are carried out so that the first component and first blood vessel form a first contact surface and the second component and the second blood vessel form a second contact surface, wherein the second contact surface is formed at least in part by an exposed portion of the second component and the moving step is carried out with the exposed portion of the second component contacting the first contact surface.

33. The method of claim 32, wherein the moving step is carried out with the exposed portion of the second component contacting the first blood vessel.

34. The method of claim 32, wherein the moving step is carried out with the exposed portion of the second component contacting the first component.

35. The method of claim 24, wherein the providing and moving steps are carried out with the magnetic attractive force between the first and second components being sufficient to maintain the anastomosis between the first and second blood vessels.

36. The method of claim 24, wherein the providing step is carried out with both the first and second components including a magnetic material.

37. The method of claim 24, wherein the providing step is carried out with only one of the first and second components including a magnetic material.

38. The method of claim 24, further comprising the step of preventing the first and second components from migrating toward one another beyond a predetermined distance.

39. The method of claim 24, wherein the selecting step is carried out with the first blood vessel being a coronary artery.

40. The method of claim 24, wherein the selecting step is carried out with the first blood vessel being the aorta.

41. The method of claim 24, wherein the selecting step is carried out with the second blood vessel being a vessel selected from the group consisting of natural blood vessels and vessels formed of synthetic material.

42. The method of claim 24, wherein the selecting step is carried out with the first and second blood vessels being a vessel selected from the group consisting of natural blood vessels and vessels formed of synthetic material.

43. The method of claim 24, wherein the providing step is carried out with the first component having an expandable portion, and the securing step is carried out by expanding the expandable portion.

44. The method of claim 43, wherein the securing step is carried out with the expandable portion being at least partially positioned within the lumen of the first blood vessel.

45. The method of claim 43, wherein the providing step is carried out with the expandable portion being a stent.

46. The method of claim 43, wherein the providing step is carried out with the expandable portion expanding radially outward into contact with the wall of the first blood vessel.