Method for deploying an endovascular graft having bifurcation

• US 6,132,459 A
• Filed: 11/01/1996
• Issued: 10/17/2000
• Est. Priority Date: 04/11/1991
• Status: Expired due to Fees

• Current Assignee: Lifeport Sciences LLC (Acacia Research Corporation)
• Original Assignee: EndoVascular Technologies Incorporated (Boston Scientific Corporation)
• Inventors: Sterman, Wesley D., Piplani, Alec A., Quiachon, Dinah B.
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US08/742,311
• Time in Patent Office: 1,446 Days
• Field of Search: 623/1, 623/12, 623/903, 623/1.13, 606/194, 606/195, 606/198
• US Class Current: 623/1.13
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

Graft having a bifurcation for repairing an aneurysm in the vicinity of an aortic bifurcation in a patient comprising a main tubular body and first and second tubular legs joined to said main body in a bifurcation. The main body and the legs are formed of a flexible surgically implantable material. The main body and each of the first and second legs having an opening therein in communication with the other openings. Expandable spring attachments are secured to the main body adjacent the opening in the main body. An additional expandable spring attachment is secured to one of said legs adjacent the opening in said one leg.

Claims

1. A method for intraluminal emplacement of a graft in a bifurcated vessel of a patient, the method comprising:

providing a graft having a main tubular body including a first attachment system secured to the main tubular body, the graft further having a first tubular leg and a second tubular leg including a second attachment system secured to the first tubular leg;

inserting the graft intraluminally into a main vessel of a patient, the main vessel having a bifurcation forming a first minor vessel and a second minor vessel;

positioning the main tubular body of the graft in the main vessel;

securing the first attachment system and the main tubular body of the graft in the main vessel;

positioning the first tubular leg of the graft in the first minor vessel;

positioning the second tubular leg of the graft in the second minor vessel;

securing the second attachment system and the first tubular leg of the graft in the first minor vessel;

positioning a third attachment system in the second tubular leg of the graft; and

securing the third attachment system and the second tubular leg of the graft in the second minor vessel;

wherein at least one of said first, second, and third attachment systems are self-expanding and further including the step of allowing said self-expandable attachment system to self expand.

2. The method of claim 1, further comprising the steps of:

providing at least one radiopaque marker disposed on the graft;

using fluoroscopy to examine the radiopaque marker to determine whether the graft is misaligned; and

aligning the graft to provide an unobstructed flow of fluid through the graft.

3. A method for emplacement of a bifurcated graft for repairing an aortic aneurysm proximate an aortic bifurcation joining first and second iliac arteries of a patient, the method comprising:

providing a graft having a main tubular body, a first tubular leg, a second tubular leg and at least one self-expanding attachment system;

inserting the graft through a femoral artery and a first iliac artery of a patient;

positioning the graft proximate an aortic bifurcation having an aortic aneurysm with a proximal end;

anchoring the main tubular body of the graft proximal the proximal end of the aortic aneurysm;

positioning the second tubular leg of the graft in a second iliac artery;

positioning the first tubular leg of the graft in the first iliac artery;

anchoring the first tubular leg of the graft in the first iliac artery;

anchoring the second tubular leg of the graft in the second iliac artery;

providing a substantially fluid-tight seal between the graft and the aortic aneurysm; and

allowing said self-expanding attachment system to self expand.

4. The method of claim 3, further comprising the step of using fluoroscopic means for visually inspecting a plurality of radiopaque markers located on the graft to determine if the graft is twisted or misaligned.

5. The method of claim 4, further comprising the step of aligning the graft to provide an unobstructed flow of fluid.

6. A method for intraluminal emplacement of a graft in a bifurcated vessel of a patient, the method comprising:

providing a graft having a main tubular body including a first attachment system secured thereto, the graft further having a first tubular leg and a second tubular leg including a second attachment system secured thereto, wherein the main tubular body joins the first tubular body at the second tubular body at a bifurcated joint;

inserting the graft intraluminally into a main vessel of a patient, the main vessel having a bifurcation forming a first minor vessel and a second minor vessel;

positioning the first attachment system and the main tubular body of the graft in the main vessel;

positioning the first tubular leg of the graft in the first minor vessel;

positioning the second tubular leg of the graft in the second minor vessel;

securing the first attachment system and the main tubular body of the graft in the main vessel;

securing the second attachment system and the first tubular leg of the graft in the first minor vessel;

providing a third attachment system;

positioning the third attachment system in the second tubular leg of the graft; and

securing the third attachment system and the second tubular leg of the graft in the second minor vessel;

wherein at least one of said first, second, and third attachment systems is self-expanding and further including the step of allowing said self-expanding attachment system to self expand.

7. The method of claim 6, further comprises the steps of:

providing a first inflatable member configured to be positioned within the main vessel and the first minor vessel;

positioning the first inflatable member within the main tubular body;

inflating the first inflatable member to secure the first attachment system within the main vessel such that the main tubular body is retained therein;

positioning the first inflatable member within the first tubular leg; and

inflating the first inflatable member to secure the second attachment system within the first minor vessel such that the first tubular leg is retained therein.

8. The method of claim 6, further comprising the steps of:

providing a second inflatable member configured to be positioned within the second minor vessel;

positioning the second inflatable member within the second tubular leg; and

inflating the second inflatable member to secure the third attachment system within the second minor vessel such that the second tubular leg is retained therein.

9. The method of claim 8 further comprising the steps of:

folding the second tubular leg of the graft towards the extremity of the main tubular body; and

unfolding the second tubular leg into the second minor vessel.

10. The method of claim 9, wherein the step of folding occurs before the step of positioning the main tubular body.

11. The method of claim 9, wherein the step of unfolding occurs after the step of inserting.

12. The method of claim 9, wherein the step of folding creates a fold in the graft proximate the bifurcated joint.

13. The method of claim 6, wherein the step of inserting comprises placing the graft and the first and second attachment system in a capsule and positioning the capsule proximate to the bifurcation.

14. The method of claim 13, wherein the step of securing the first attachment system compromises deploying a self-expanding wire attachment system from the capsule.

15. The method of claim 6, wherein the step of securing the first attachment system comprises securing with a self-expanding attachment system.

16. The method of claim 15, wherein the self-expanding attachment system has outwardly protruding hooks configured to penetrate the main vessel.

17. The method of claim 6, wherein the step of securing the second attachment system comprises securing with a self-expanding attachment system.

18. The method of claim 17, wherein the self-expanding attachment system has outwardly protruding hooks configured to penetrate the first minor vessel.

19. The method of claim 6, wherein the step of attaching the third attachment system comprises attaching a self-expanding attachment system.

20. A method for intraluminal emplacement of a graft in a bifurcated vessel of a patient, the method comprising:

providing a graft having a main tubular body, a first tubular leg, a second tubular leg connected at a bifurcated joint, and self-expanding anchoring devices attached to said main tubular body and at least one of said first tubular leg and second tubular leg;

inserting the graft intraluminally into a main vessel of a patient, the main vessel having a bifurcation forming a first minor vessel and a second minor vessel;

positioning the main tubular body of the graft in the main vessel;

anchoring the main tubular body in the main vessel;

positioning the first tubular leg of the graft in the first minor vessel;

anchoring the first tubular leg of the graft in the first minor vessel;

positioning the second tubular leg of the graft in the second minor vessel;

anchoring the second tubular leg of the graft in the second minor vessel; and

allowing said self-expanding anchoring devices to self expand.