Medical implant
First Claim
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1. An implantable medical device, comprising:
- a self-expanding tubular structure comprising at least one strand comprising a first polymer characterized by a modulus of elasticity greater than about 1 GPa; and
a second polymer at least partially and conformally coating said strand, said second polymer being an elastomeric thermoset polymer characterized by a percent elongation to break that is greater than about 150 percent at 37°
C.;
wherein the second polymer increases the mass of said self-expanding tubular structure by at least about 20 percent.
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Abstract
Disclosed is a self-expanding medical implant for placement within a lumen of a patient. The implant comprises a woven or non-woven structure having a substantially tubular configuration, and is designed to be low-profile such that it is deliverable with a small diameter catheter. The implant has a high recoverability and desired mechanical properties.
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Citations
25 Claims
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1. An implantable medical device, comprising:
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a self-expanding tubular structure comprising at least one strand comprising a first polymer characterized by a modulus of elasticity greater than about 1 GPa; and a second polymer at least partially and conformally coating said strand, said second polymer being an elastomeric thermoset polymer characterized by a percent elongation to break that is greater than about 150 percent at 37°
C.;wherein the second polymer increases the mass of said self-expanding tubular structure by at least about 20 percent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An implantable medical device, comprising:
a self-expanding tubular structure comprising; at least one biodegradable strand comprising poly(lactic acid-co-glycolic acid) comprising at least 75 weight percent of lactic acid; and poly(lactic acid-co-caprolactine) at least partially coating said strand; wherein said poly9lactic acid-co-caprolactone) is cross-linked and has a number average molecular weight (Mn) greater than 30,000 Da; wherein said poly(lactic acid co-caprolactone) increases the mass of said self-expanding tubular structure by at least 24 percent; wherein said self-expanding tubular structure is a braided structure comprising between 16 and 48 strands forming an average braid angle of between 110 degrees and 135 degrees.
Specification