Stent

• US 20020169498A1
• Filed: 05/14/2001
• Published: 11/14/2002
• Est. Priority Date: 05/14/2001
• Status: Active Grant

• Current Assignee: M.I. Tech Co., Ltd. (Synergy Innovation Co., Ltd.)
• Original Assignee: M.I. Tech Co., Ltd. (Synergy Innovation Co., Ltd.)
• Inventors: Kim, Cheol-Sang, An, Sung-Soon, Lim, Chull-Su
• Granted Patent: US 6,663,663 B2
• Time in Patent Office: Days
• 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 made of a wire having a unit length, the first turn being 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; and

a first intersection turn made of a wire having a unit length, the first intersection turn being 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.

2. The stent of claim 1 further comprising a second turn and a second intersection turn, the valleys of the first turn being interlocked with peaks of the second turn, the valleys of the first intersection turn being interlocked with the peaks of the second intersection turn.

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 sections 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.

8. The stent of claim 7 wherein the anti-migration turn comprises a flare turn formed on one end of one of the first turn and the first intersection turn, a diameter of the fare turn being increasingly increased from the one end.