Coated stent with crimpable coating
AssigneeMedtronic Vascular, Inc.
InventorEugene Tedeschi
Life of this patent
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Abstract
The expandable stent with a crimpable coating of the present invention provides an expandable stent with a coating containing a drug or therapeutic agent that can be crimped to a balloon according to conventional methods without damaging the coating. The stent comprises a stent frame, and a coating applied over the stent frame with the coating having at least one crimpable zone and containing a therapeutic agent. In one embodiment, the length of the crimpable zone can be much less than the length of the stent and the crimpable zone can have a higher durometer value than the remainder of the coating. In another embodiment, the coating in the crimpable zones can form rails to protect the coating in the regular coating zones.
Claims30
A stent delivery system comprising:
- a catheter;
- a balloon operably attached to the catheter;
- and
- a stent disposed on the balloon;
- wherein the stent further comprises a stent frame and a coating applied to the stent frame, the coating having at least one crimpable zone and containing a therapeutic agent.
A stent comprising:
- a stent frame;
- and
- a coating applied over the stent frame, the coating having at least one crimpable zone and containing a therapeutic agent.
A method of manufacture of a stent comprising:
- providing a stent frame;
- forming a polymer mixture of a therapeutic agent and a polymer;
- applying a coating of the polymer mixture to the stent frame;
- and
- treating the coating to form at least one crimpable zone.
A system for producing a stent comprising:
- means for forming a polymer mixture of a therapeutic agent and a polymer;
- means for applying a coating of the polymer mixture to a stent frame;
- and
- means for treating the coating to form at least one crimpable zone.
A stent comprising:
- a stent frame;
- and
- a coating applied over the stent frame, the coating having a plurality of crimpable zones and containing a therapeutic agent;
- each of the plurality of crimpable zones having a length much less than the length of the stent;
- and
- each of the plurality of crimpable zones having a durometer value of about 40D-50D.
Dependencies are inferred from the claim text.