Stent

• US 6,663,663 B2
• Filed: 05/14/2001
• Issued: 12/16/2003
• Est. Priority Date: 05/14/2001
• Status: Expired due to Term

• Current Assignee: M.I. Tech Co., Ltd. (Synergy Innovation Co., Ltd.)
• Original Assignee: M.I. Tech Co., Ltd. (Synergy Innovation Co., Ltd.)
• Inventors: Lim, Chull-Su, Kim, Cheol-Sang, An, Sung-Soon
• Primary Examiner(s): Willse, David H.
• Assistant Examiner(s): Blanco, Javier G.
• Application Number:
  US09/855,732
• Publication Number:
  US 20020169498A1
• Time in Patent Office: 946 Days
• Field of Search: 623/1-3-
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stent includes a first turn made of a wire having a unit length. The first turn is formed having a plurality of first straight sections connected to each other by a plurality of bending points along a circumferential plane and a plurality of valleys and peaks formed by the bending points. The stent further includes a first intersection turn made of a wire having a unit length, the first intersection turn is formed having a plurality of straight sections intersecting the first straight sections to form a plurality of meshes, the straight sections of the intersection turn formed by a plurality of peaks and valleys.

Claims

1. A stent comprising:

a first turn formed by a wire having a predetermined length, the wire being bent in a zig-zag shape having plural first straight sections interconnected by plural valleys and peaks to define a cylindrical shape;

an adjacent first turn formed in a zig-zag shape having plural second straight sections interconnected by plural peaks and valleys, wherein the peaks are interlocked with the corresponding valleys of the first turn;

a first intersection turn formed in a zig-zag shape having plural third straight sections interconnected by plural valleys and peaks to define a cylindrical shape, the third straight sections intersecting the corresponding first straight sections of the first turn; and

an adjacent first intersection turn formed in a zig-zag shape having plural fourth straight sections interconnected by plural peaks and valleys, wherein the peaks are interlocked with the corresponding valleys of the first intersection turn the fourth straight sections intersecting the corresponding second straight sections of the adjacent first turn.

2. The stent of claim 1, further comprising a second intersection turn formed in a zig-zag shape having plural fifth straight sections interconnected by plural peaks and valleys, the fifth straight sections intersecting the corresponding first and second straight sections.

3. The stent of claim 1 wherein one of the straight sections of the first intersection turn is twisted on one of the straight sections of the first turn at least more than one time.

4. The stent of claim 1 wherein one of the straight sections of the first intersection turn is twisted on intersection points of the straight section of the first turn and the first intersection turn.

5. The stent of claim 1 wherein the first turn and the first intersection turn are formed in an identical cycle.

6. The stent of claim 1 wherein the first turn and the first intersection turn are formed having an identical width to each other.

7. The stent of claim 1 wherein one of the first turn and the first intersection turn comprises an anti-migration turn for preventing the stent from being moved out of a desired portion of an internal wall.