Stent crimping system

• US 6,352,547 B1
• Filed: 09/22/1999
• Issued: 03/05/2002
• Est. Priority Date: 09/22/1999
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Shukhat, Victor G., Brown, Terry V., Klisch, Leo M.
• Primary Examiner(s): O'Connor, Cary E.
• Application Number:
  US09/401,467
• Time in Patent Office: 895 Days
• Field of Search: 623/901, 623/1.18, 623/1.2, 623/1.22, 623/1.23, 623/1.11, 606/108, 606/190, 606/194, 606/200, 606/198, 606/1
• US Class Current: 606/198
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: B25B 27/146 Clip clamping hand tools

Abstract

A stent crimper is formed of at least one crimping member disposed in a reducible diameter loop. The crimping member includes at least one pulling member extending from the loop. The diameter of the loop is reduced by pulling on the pulling member. A stent placed in the loop may be crimped by reducing the diameter of the loop.

Claims

1. A stent crimper comprising:

a support frame, the support frame having a first section and a second section, and a gap extending therebetween;

a movable carriage movably mounted on the first section of the support frame, the movable carriage capable of moving back and forth from the first section to the second section and

a crimping member for receiving a stent thereon, the crimping member disposed in the gap, a first end of the crimping member extending from the movable carriage, a second end of the crimping member extending from the second section, the crimping member forming a loop when the movable carriage is moved toward the second end of the crimping member.

2. The stent crimping apparatus of claim 1 further including a cooling means for cooling a stent to a predetermined temperature.

3. The stent crimping apparatus of claim 2 wherein the cooling means comprises a reservoir and applicator of chilled air.

4. method of crimping a stent comprising the following steps:

providing a crimping apparatus as in claim 1;

placing a stent on the crimping member;

sliding the carriage from the first section to the second section so as to form a reducible diameter loop which imparts an inward force to the stent.

5. The method of claim 4 further comprising the steps of placing the stent into a stent compressing apparatus having an opposable pair of jaws, the jaws having contoured surfaces constructed and arranged to receive and uniformly compress the stent when the stent is placed within the jaws and the jaws are brought together;

and

bringing the opposable jaws together with a predetermined force to reduce the size of the stent.