Percutaneous coronary artery bypass through a venous vessel

• US 6,443,158 B1
• Filed: 06/01/1998
• Issued: 09/03/2002
• Est. Priority Date: 06/19/1997
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Kugler, Chad J., LaFontaine, Daniel M., Harrison, Kent D., Daniel, John M. K.
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): Barrett, Thomas C.
• Application Number:
  US09/088,496
• Time in Patent Office: 1,555 Days
• Field of Search: 128/898, 604/8
• US Class Current: 128/898
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• 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 2017/1139 Side-to-side connections, e.g. shunt or X-connections
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00261 arranged in a line
• CPC Class Codes: A61B 2018/00386 Coronary vessels

Abstract

A bypass system for bypassing a restriction in a parent vessel of a mammal to provide blood flow past the restriction. The bypass system couples a restricted artery to a venous vessel distal of a restriction to provide blood flow through the artery distal of the restriction. Blood flow is provided to a distal portion of the artery through an adjacent venous vessel so that blood can be provided to distal portions of the restricted artery.

Claims

1. A method of bypassing a restriction in a mammal via a vessel graft comprising:

positioning a conductive ring about an attachment portion of the vessel graft prior to intraluminally inserting the graft;

forming apertures through a venous vessel and a restricted artery at a desired location;

intraluminally inserting the vessel graft to align the attachment portion relative to the aperture of the restricted artery; and

inductively heating the conductive ring to fuse attachment of the vessel graft to the restricted artery.

2. The method of claim 1 wherein the method for inductively heating the conductive rings comprises:

providing an inductive coil;

intraluminally inserting the inductive coil and advancing the inductive coil for alignment with the conductive ring at the attachment portion of the vessel graft; and

supplying a signal to the coil for inducing a current in the conductive ring.

3. The method of claim 2 wherein a radio frequency generator is coupled to the inductive coil for providing a signal.

4. The method of claim 2 and further comprising:

supplying a coolant solution to the inductive coil while supplying the signal.

5. The method of claim 4 wherein the method for supplying the coolant solution comprises:

providing a coolant delivery system including a delivery conduit coupled with the coil;

supplying coolant through the delivery conduit to cool the coil; and

providing a discharge conduit for discharging fluid from the delivery conduit.

6. The method of claim 5 wherein the inductive coil is formed of a hollow tubular member, the tubular member of the inductive coil defining the delivery conduit and discharge conduit of the coolant delivery system.

7. The method of claim 5 wherein the coolant delivery system and inductive coil are separately formed.

8. A method for attaching a graft to a vessel in a mammal comprising steps of:

positioning the graft relative to a vessel portion and a conductive ring between the graft and the vessel portion; and

inductively heating the conductive ring to fuse the graft to the vessel portion.

9. The method of claim 8 wherein the vessel portion includes an opened flap formed by a cut portion of the vessel wall.

10. The method of claim 8 wherein the step of inductively heating the conductive ring includes:

inserting an inductive heating coil and aligning the inductive heating coil relative to the conductive ring; and

energizing the inductive heating coil to inductively heat the conductive ring.

11. The method of claim 10 wherein the inductive heating coil is energized by a radio frequency generator.

12. The method of claim 8 and further comprising:

supplying a coolant while inductively heating the conductive ring.