Method for forming a coating on a stent

Patent metadata

Field	Value
Publication number	US-10279372-B2
Application number	US-201715853551-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Jun 15, 2007
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A method for forming a coating on a stent involves spraying or drying a coating on the stent while the stent is supported on a mandrel assembly, during which part of the stent is made to go out of contact with the mandrel assembly.

First claim

What is claimed is:

1. A method for forming a coating on a stent, the method comprising:
spraying or drying a coating on the stent while the stent is supported on a mandrel assembly, the stent having a first end, the stent supported such that a first part of the stent at the first end is in contact with the mandrel assembly; and
during the spraying or drying, making the first part of the stent go out of contact with the mandrel assembly by vibrating the mandrel assembly.

2. The method of claim 1 , wherein a coating adhesion between the first part of the stent and the mandrel assembly is broken when the first part of the stent goes out of contact with the mandrel assembly.

3. The method of claim 2 , wherein the first part of the stent goes out of contact with the mandrel assembly during the drying, the drying including passing heated gas over the stent while the stent is supported on the mandrel assembly.

4. The method of claim 3 , further comprising, before the drying, spraying the coating on the stent while supporting the first end of stent on the mandrel assembly.

5. The method of claim 4 , further comprising, after the drying, spraying the stent with a second layer of coating while supporting the first end of the stent on the mandrel assembly, the second layer forming a second coating adhesion between a second part of the stent and the mandrel assembly.

6. The method of claim 5 , further comprising making the second part of the stent go out of contact with the mandrel assembly by vibrating the mandrel assembly, wherein the second coating adhesion is broken when the second part of the stent goes out of contact with the mandrel assembly.

7. The method of claim 1 , wherein the first part of the stent goes out of contact with the mandrel assembly during the spraying.

8. The method of claim 7 , wherein the spraying is performed while the stent is being rotated by the mandrel assembly.

9. The method of claim 8 , further comprising, after the spraying, drying the coating on the stent by passing heated gas over the stent while the first end of stent is supported on the mandrel assembly.

10. The method of claim 9 , further comprising, during the passing of heated gas over the stent, making a second part of the stent go out of contact with the mandrel assembly by vibrating the mandrel assembly, wherein a coating adhesion is broken when the second part of the stent goes out of contact with the mandrel assembly.

11. The method of claim 1 , wherein during the spraying or drying, the first part of the stent is in contact with at least one of a plurality of surfaces of the mandrel assembly, which surfaces together form a partial conical shape.

12. The method of claim 11 , wherein each one of the plurality of surfaces includes a channel.

Assignees

• Abbott Cardiovascular Systems Inc

Inventors

• Chen Yung-Ming
• Van Sciver Jason
• Mccabe Jeff
• Garcia Antonio

Classifications

• B05D7/00

  Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials {(coating of foodstuffs A23P20/17, A23P20/15, A23P20/18)} · CPC title

• A61F2/91 Primary

  made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes · CPC title

• B23K26/402

  involving non-metallic material, e.g. isolators · CPC title

• B05D1/02 Primary

  performed by spraying · CPC title

• B23K2103/42

  Plastics other than composite materials · CPC title