Temperature controlled crimping
First Claim
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1. A method of making a medical device comprising:
- providing a stent cut from a tubing made of a polymer combination comprising poly(L-lactide);
positioning the stent loosely over a catheter;
and crimping the positioned stent to secure the stent to a the catheter, wherein the crimping reduces the diameter of the stent,;
wherein the temperature of the stent substrate during the crimping is at a temperature between 10°
C. below less than the conventionally measured glass transition temperature for poly(L-lactide) (Tg) and below greater than or equal to 10°
C. less than Tg.
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Abstract
This disclosure describes a method for crimping a polymeric stent onto a catheter for percutaneous transluminal coronary angioplasty or other intraluminal interventions. The method comprises crimping the stent onto a catheter when the polymer is at a target temperature other than ambient temperature. The polymer can optionally comprise drug(s).
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8 Claims
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1. A method of making a medical device comprising:
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providing a stent cut from a tubing made of a polymer combination comprising poly(L-lactide); positioning the stent loosely over a catheter;
andcrimping the positioned stent to secure the stent to a the catheter, wherein the crimping reduces the diameter of the stent,;
wherein the temperature of the stent substrate during the crimping is at a temperature between 10°
C. below less than the conventionally measured glass transition temperature for poly(L-lactide) (Tg) and below greater than or equal to 10°
C. less than Tg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification