Variable stent and method for treatment of arterial disease

• US 6,030,414 A
• Filed: 11/13/1997
• Issued: 02/29/2000
• Est. Priority Date: 11/13/1997
• Status: Expired due to Term

• Current Assignee: ARG Medical Solutions LLC
• Original Assignee: Syde A. Taheri
• Inventors: Taheri, Syde A.
• Primary Examiner(s): Yu, Mickey
• Assistant Examiner(s): Koh, Choon P.
• Application Number:
  US08/970,055
• Time in Patent Office: 838 Days
• Field of Search: 623/1, 623/11, 623/12, 606/191-200, 606/153
• US Class Current: 623/1.1
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• 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 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels

Abstract

The present invention contemplates the use of a grafted stent having predetermined and sized lateral openings for the treatment of arterial disease at or around the intersection of multiple arteries, thereby ensuring blood flow through such arteries to collateral organs. In particular, the point of intersection of the arteries to be treated is determined and the lateral openings are interposed within the stent and appended graft and the stented graft is positioned precisely at a premeasured point whereby the intersection of the arteries coincides with the lateral openings of the stented graft. The method and apparatus of the present invention further includes securing the lateral openings of the stented graft against a portion of the walls of the intersection point to guard against leaking or improper fit.

Claims

1. A stent for the treatment of arterial disease at an intersection between a main artery and a lateral artery, the stent comprising:

a) a main body portion adapted to be positioned in a main artery and comprising a surrounding side wall defining a passageway extending to a first opening and a second opening, wherein when the stent is positioned in the main artery, the passageway in the main body portion extending to the first opening and the second opening permits the flow of blood through the main artery;

b) at least one lateral opening provided in the surrounding side wall of the main body portion and in fluid flow communication with the passageway extending to the first opening and the second opening; and

c) a lateral support ring provided on the surrounding side wall of the main body portion to surround and define the one lateral opening, wherein the lateral support ring is sized to be larger than an opening of a lateral artery such that the lateral support ring is adapted to seat against a side wall of the main artery surrounding the intersection with the lateral artery when the stent is positioned in the main artery.

2. The stent of claim 1 wherein the stent is further adapted to be selectively contracted and expanded.

3. The stent of claim 1 wherein the stent is further adapted to receive a secondary stent within the at least one lateral opening.

4. The stent of claim 1 wherein the stent is adapted to fit within a graft and wherein the graft further comprises at least one lateral opening coincident with the one lateral opening of the stent and wherein blood is capable of flowing through the coincident lateral openings of the stent and the graft.