STENT FOR BILE DUCT

• US 20120303132A1
• Filed: 12/03/2009
• Published: 11/29/2012
• Est. Priority Date: 12/03/2009
• Status: Abandoned Application

• Current Assignee: Mitech Company Limited
• Original Assignee: Mitech Company Limited
• Inventors: Kim, Sang-Ho, Kim, Han-Ki, Park, Jong-Chae, Shin, Il-gyun, Park, Do-Hyun, Song, Hwa-Sub
• Application Number:
  US13/513,566
• Publication Number:
  US 20120303132A1
• Time in Patent Office: Days
• US Class Current: 623/23.7
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/041 Bile ducts
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0054 V-shaped

Abstract

The present invention relates to a stent which is inserted into a stenosed bile duct to enlarge the bile duct. The stent includes a plurality of hooks which extend outwards from the main body of the stent at a predetermined angle and are spaced apart from each other. Therefore, when the stent is inserted into the bile duct, the hooks that extend outwards from the main body at a predetermined angle are hooked to the inner surface of the bile duct, thus preventing the stent from slipping relative to the bile duct.

Claims

1. A stent for a bile duct, comprising:

a main body formed of metal wires in a hollow cylindrical shape; and

a plurality of hooks provided on the main body by extending one of the metal wires of the main body outwards from the main body at a predetermined angle,

the hooks being spaced apart from each other with respect to a circumferential direction of the main body.

2. The stent for the bile duct according to claim 1, wherein the angle between each of the hooks and the main body is greater than 0°

and less than 90°

.

3. The stent for the bile duct according to claim 1, wherein the hooks are disposed on a circumferential outer surface of the main body at positions symmetrical to each other.

4. The stent for the bile duct according to claim 1, wherein at least one or more of the hooks are arranged in the circumferential direction of the main body, thus forming a row of hooks,

wherein the row of hooks comprises a plurality of rows of hooks that are provided in a longitudinal direction of the main body.

5. The stent for the bile duct according to claim 1, further comprising

a hook cover covering a surface of each of the hooks made of the metal wire.

6. The stent for the bile duct according to claim 1, further comprising

a body cover covering a surface of the main body made of the metal wires, the body cover having a hollow cylindrical shape.

7. The stent for the bile duct according to claim 1, wherein the main body comprises at least one row of metal wire formed by extending a metal wire in the circumferential direction in a zigzag manner such that a peak part and a valley part are formed in the row of metal wire.