Stent, method for producing same and device for producing same

Patent metadata

Field	Value
Publication number	US-2016120671-A1
Application number	US-201414889654-A
Country	US
Kind code	A1
Filing date	Apr 25, 2014
Priority date	May 7, 2013
Publication date	May 5, 2016
Grant date	—

Abstract

According to a method for producing a stent which is formed into a tubular body and includes at least one marker formed from a marker housing and a marker insert including: using an indenter having a spherical shaped distal end, the distal end coming into contact with the marker insert when the marker insert is pressed with the indenter and is pressure fitted to an opening provided on the marker housing to fix it thereon, a sufficient load can be applied to a radiopaque marker insert when the marker insert is attached to the stent, and further a stent having a radiopaque marker whose marker housing has little damage can be produced.

First claim

1 . A method for producing a stent which is formed into a tubular body and comprises at least one marker including a marker housing and a marker insert comprising:
using an indenter having a spherical shaped distal end, the distal end coming into contact with the marker insert when the marker insert is pressed with the indenter and is pressure fitted to an opening provided on the marker housing to fix it thereon.

2 . The method for producing the stent according to claim 1 , wherein the indenter is formed of a proximal region and a distal end, the proximal region having a circular cross-sectional shape whose outside diameter is equal to or larger than an inside diameter of the opening of the marker housing.

3 . The method for producing the stent according to claim 1 or 2 , wherein the distal end has a radius of curvature equal to or larger than a radius of the opening of the marker housing.

4 . A device for producing a stent which is formed into a tubular body and comprises at least one marker including a marker housing and a marker insert comprising:
a press apparatus equipped with an indenter for pressing the marker insert and pressure fitting it to an opening provided on the marker housing; a microscope; and a mandrel, wherein a distal end, of the indenter, coming into contact with the marker insert has a spherical shape.

5 . The device for producing the stent according to claim 4 , wherein the mandrel can move relatively to the press apparatus and the microscope so that a pre-determined position of the mandrel is consistent with a central axis of the indenter and a center of a visual field of the microscope.

6 . A stent which is formed into a tubular body and comprises at least one marker including a marker housing and a marker insert, wherein the marker insert has a recessed spherical outer surface shape.

7 . The stent according to claim 6 , wherein a position of an outer surface of the marker insert is consistent with a position of an outer surface of the marker housing at a boundary between the marker insert and the marker housing.

Assignees

• Kaneka Corp

Inventors

• Higashi Ryogo
• Shimada Tamotsu

Classifications

• A61F2230/0069

  cylindrical · CPC title

• A61F2/90 Primary

  characterised by a net-like or mesh-like structure · CPC title

• A61F2240/002

  Designing or making customized prostheses · CPC title

• A61F2220/0033

  made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit · CPC title

• A61F2250/0098

  radio-opaque, e.g. radio-opaque markers · CPC title