Title:
INTRAVASCULAR STENT AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JP3673973
Kind Code:
B2
Abstract:
PURPOSE: To enable a stent to hold a medicine of an amount to be imporant necessary for a medical treatment by evaporating a solvent after applying the solvent and a polymer dissolved in the solvent and a solution containing a substance for the medical treatment dispersed in the solvent respectively to a cylindrical stent body.
CONSTITUTION: In the case that an intravascular stent is produced, first, a cylindrical stent body is generally formed. Next, a solvent, a polymer dissolved in the solvent, and a solution containing a substance necessary for a medical treatment dispersed in the solvent are applied to the stent body. Successively, the solvent is evaporated. A metallic surface or a polymeric surface is arranged in the stent body. On the other hand, the solution is applied by atomizing and dipping or plural times of these application steps and drying. The ratio of the medicine to the dissolved polymer in the solution is changed by plural times of the application step. Furthermore, the polymer has bioabsorbability. By doing so, a medicine can be held to the stent of only its important amount necessary for a medical treatment.
Inventors:
Eric P. Berg
Ronald J. Touch
Michael Drawer
Rodney Gee Wolf
Ronald J. Touch
Michael Drawer
Rodney Gee Wolf
Application Number:
JP10920694A
Publication Date:
July 20, 2005
Filing Date:
April 26, 1994
Export Citation:
Assignee:
Medtronic Incorporated
International Classes:
A61F2/82; A61K31/57; A61L31/00; A61L31/10; A61L31/14; A61L31/16; A61F2/00; A61F2/02; A61F2/958; (IPC1-7): A61M29/00
Domestic Patent References:
| JP2017071A | ||||
| JP5502179A | ||||
| JP3501691A |
Attorney, Agent or Firm:
Kobayashi Jyushio
Shinichi Okamura
Shinichi Okamura