Method for percutaneous coronary artery bypass

• US 6,253,769 B1
• Filed: 09/07/1999
• Issued: 07/03/2001
• Est. Priority Date: 03/06/1997
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: LaFontaine, Daniel M., Wang, Lixiao, Hastings, Roger N., Harrison, Kent D., Euteneuer, Charles L.
• Primary Examiner(s): Isabella, David J.
• Assistant Examiner(s): CAMPEN, KELLY SCAGGS
• Application Number:
  US09/391,112
• Time in Patent Office: 665 Days
• Field of Search: 128/898, 623/1.15, 623/3.1, 623/11.11, 623/23.64, 623/66, 623/23.7, 623/66.1, 606/191, 606/194, 606/192, 606/195, 606/198, 606/200, 606/27, 606/78, 600/300, 604/7-9, 604/104, 604/281, 607/130
• US Class Current: 128/898
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• 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 2017/1135 End-to-side connections, e.g. T- or Y-connections Y-shaped blood vessel prostheses A61F2002/065
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2090/3929 Active markers
• CPC Class Codes: A61B 2090/3945 Active visible markers, e.g. light emitting diodes
• CPC Class Codes: A61B 2090/3958 emitting a signal
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: Y10S 623/902 Method of implanting

Abstract

A percutaneous system for bypassing a restriction in an artery of a mammal having an aorta includes providing a graft having a body portion with a first end, a second end and a lumen therebetween. First and second expandable stents are provided at the first and second ends of the graft, respectively. Apertures are formed in the artery, distal of the restriction, and in the aorta and the graft is inserted between the apertures. At least a portion of the first stent is inserted through the aperture in the artery and the stent is deployed to connect the first end of the graft within the artery. The second stent is positioned such that a first expandable portion is outside the aorta and a second expandable portion is within the aorta. The first and second expandable portions of the second stent are expanded to have outer diameters at least as large as the aperture in the aorta to anchor the first end of the graft in the aorta such that the lumen in the graft communicates with the aorta and the artery.

Claims

1. A method of bypassing a restriction in an artery of a mammal having an aorta, the method comprising:

providing a graft having a body portion with a first end, a second end and a lumen therebetween;

providing a first expandable stent at the first end of the graft;

providing a second expandable stent at the second end of the graft;

forming an aperture in the aorta;

forming an aperture in the artery distal of the restriction;

inserting the graft between the aperture in the aorta and the aperture in the artery;

inserting at least a portion of the first stent through the aperture in the artery and deploying the first stent to connect the first end of the graft within the artery;

positioning the second stent such that a first expandable portion is outside the aorta and a second expandable portion is within the aorta; and

expanding the first and second expandable portions of the second stent to have outer diameters at least as large as the aperture in the aorta to anchor the first end of the graft in the aorta such that the lumen in the graft communicates with the aorta and the artery.

2. The method of claim 1 wherein expanding the first and second expandable portions comprises:

expanding the second expandable portion such that it deploys radially outwardly to lie against an interior wall of the aorta about the aperture in the aorta.

3. The method of claim 1 and further comprising:

providing a sleeve on at least one of the first and second expandable stents, the sleeve having a chemical carrying region carrying chemicals; and

wherein deploying the at least one of the first and second expandable stents includes dispensing the chemicals from the chemical carrying region.

4. The method of claim 1 wherein providing a second expandable stent comprises providing two separate stents and wherein expanding the first and second expandable portions includes expanding the two separate stents.