Stent for endoscope

• US 6,176,873 B1
• Filed: 06/15/1998
• Issued: 01/23/2001
• Est. Priority Date: 06/25/1997
• Status: Expired due to Fees

• Current Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
• Original Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
• Inventors: Ouchi, Teruo
• Primary Examiner(s): SNOW, BRUCE EDWARD
• Application Number:
  US09/094,823
• Time in Patent Office: 953 Days
• Field of Search: 623/1.12, 623/1.22, 623/1.15, 604/7, 604/8, 604/107, 606/193, 606/194, 606/198, 606/200
• US Class Current: 623/1.22
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9528 for retrieval of stents
• CPC Class Codes: A61M 25/0105 Steering means as part of the catheter or advancing means; Markers for positioning systems for detection of markers A61B

Abstract

A stent includes a mesh tube so constituted that a diameter thereof is contracted when axially extended, while the diameter thereof returns to its original diameter when not axially extended. A cap is provided to a first axial end of the mesh tube for bundling the first axial end of the mesh tube. The cap has a through hole connecting an interior and an exterior of the mesh tube. A tail tube is provided to a second axial end of the mesh tube so that the tail tube and the mesh tube form a continuous path. The tail tube bundling the second axial end of the mesh tube.

Claims

1. A stent comprising:

a mesh tube having a diameter that is contracted from an original size when axially extended, the diameter returning to the original size when not axially extended;

a cap provided to a first axial end of said mesh tube, said cap bundling said first axial end of said mesh tube, said cap having a hole connecting an interior and an exteiror of said mesh tube; and

a tail tube provided to a second axial end of said mesh tube so that said tail tube and said mesh tube form a continuous path, said tail tube bundling said second axial end of said mesh tube, said tail tube having a catch hole formed at a predetermined distance from said mesh tube.

2. The stent according to claim 1, further comprising a string provided to said tail tube,

wherein one end of said string is fixed to said tail tube, while the other end of said string is a free end.

3. The stent according to claim 2, wherein a knot is formed on said free end of said string.

4. The stent according to claim 1, said cap including an inner ring portion and an outer ring portion,

wherein said inner and outer ring portions are so constituted that a periphery of said first axial end of said mesh tube is sandwiched between said inner and outer ring portions.

5. The stent according to claim 1, further comprising a connecting ring fixed to said tail tube, which connects said mesh tube and said tail tube.

6. The stent according to claim 1, wherein each of said cap and said tail tube has a diameter smaller than an original outer diameter of said mesh tube.