Method of removing stent islands from a stent

• US 7,823,263 B2
• Filed: 07/09/2007
• Issued: 11/02/2010
• Est. Priority Date: 07/11/2006
• Status: Expired due to Fees

• Current Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories)
• Inventors: Wu, Patrick P.
• Primary Examiner(s): Cozart; Jermie E
• Application Number:
  US11/825,985
• Publication Number:
  US 20080033529A1
• Time in Patent Office: 1,212 Days
• Field of Search: 294/211, 294/264, 294/265, 295/57, 292/35, 292/82, 264/162, 264/345, 451/36, 451/37, 451/51, 451/61, 137/15.05
• US Class Current: 29/426.4
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: B29C 2791/009 Using laser
• CPC Class Codes: B29C 2793/0018 for making a hole
• CPC Class Codes: B29C 37/02 Deburring or deflashing thermal deburring in general B23D79/005
• CPC Class Codes: B29L 2031/7532 Artificial members, protheses
• CPC Class Codes: B29L 2031/7534 Cardiovascular protheses
• CPC Class Codes: Y10T 29/49805 Shaping by direct application of fluent pressure
• CPC Class Codes: Y10T 29/49821 by altering or destroying work part or connector
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble
• CPC Class Codes: Y10T 29/53987 Tube, sleeve or ferrule

Abstract

A tool for removing islands from a stent is disclosed. The tool includes a tube with at least one exit hole in communication with the center of the tube, and the tube being connected to a pressurized fluid source. A stent island is located over the exit hole and is removed by the force of the exiting fluid from the exit hole.

Claims

1. A method of removing stent islands, the method comprising:

positioning a stent over a tube, the stent comprising a pattern and removable islands attached to the pattern not intended to be part of the pattern, wherein the tube includes at least one outlet opening in communication with an interior of the tube;

conveying a fluid into the tube, wherein the fluid is a gas, wherein the fluid exits through at least one outlet opening, wherein the exiting fluid facilitates removal of at least one of the islands of the stent pattern.

2. The method of claim 1, wherein the pattern is formed by laser cutting.

3. The method of claim 1, wherein the stent is slid along the longitudinal axis of the tube.

4. The method of claim 1, further comprising sliding the stent over more than one opening.

5. The method of claim 1, further comprising sliding the stent back and forth over the tube to facilitate removal of the islands.

6. The method of claim 1, further comprising securing the stent to the tube with retaining members at the ends of the stent.

7. The method of claim 6, wherein the retaining members are collets.

8. The method of claim 1, wherein the stent comprises a biostable and/or bioabsorbable polymer.

9. The method of claim 1, wherein the stent is a metallic stent.

10. The method of claim 1, wherein the fluid flow is continuous.

11. The method of claim 1, wherein the fluid flow is pulsed.

12. The method of claim 1, wherein the at least one opening allows the fluid to exit the tube as a thin sheet.

13. The method of claim 1, wherein the fluid is emitted in a radial direction from the at least one opening in the tube.

14. The method of claim 1, wherein the fluid is emitted in a direction other than radial from the at least one opening in the tube.

15. A method of removing stent islands, the method comprising:

positioning a stent over a tube, the stent comprising a pattern and removable islands attached to the pattern not intended to be part of the pattern, wherein the tube includes at least one outlet opening in communication with an interior of the tube;

conveying a fluid into the tube, wherein the fluid exits through at least one outlet opening, wherein the exiting fluid facilitates removal of at least one of the islands of the stent pattern, wherein the stent is rotated about the longitudinal axis of the tube.

16. A method of removing stent islands, the method comprising:

positioning a stent over a tube, the stent comprising a pattern and removable islands attached to the pattern not intended to be part of the pattern, wherein the tube includes at least one outlet opening in communication with an interior of the tube;

conveying a fluid into the tube, wherein the fluid exits through at least one outlet opening, wherein the exiting fluid facilitates removal of at least one of the islands of the stent pattern,

wherein the stent is rotated about the longitudinal axis of the tube, and slid along the longitudinal axis of the tube.