STRUCTURED DRUG-ELUTING BALLOON CATHETER
First Claim
Patent Images
1. Balloon catheter featuring—
- at least on portions of the outward-turned surface of the dilatable area—
hair-like extensions, with the average diameter D, the average length L, and the average center-to-center distance P of the hair-like extensions to each other being selected such that a drug on the balloon surface covered with hair-like extensions can essentially be secured by means of capillary forces.
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Abstract
The invention relates to a balloon catheter featuring—at least on portions of the outward-turned surface of the dilatable area—hair-like extensions, with the average diameter D, the average length L, and the average center-to-center distance P of the hair-like extensions to each other being selected such that a drug on the balloon surface covered with hair-like extensions can essentially be secured by means of capillary forces.
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Citations
20 Claims
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1. Balloon catheter featuring—
- at least on portions of the outward-turned surface of the dilatable area—
hair-like extensions, with the average diameter D, the average length L, and the average center-to-center distance P of the hair-like extensions to each other being selected such that a drug on the balloon surface covered with hair-like extensions can essentially be secured by means of capillary forces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20)
- at least on portions of the outward-turned surface of the dilatable area—
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14. A balloon catheter for use in angioplasty, in percutaneous transluminal angioplasty, or percutaneous transluminal coronary angioplasty, comprising:
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a dilatable area having an outward turned surface, a plurality of cylindrical extensions on the outward turned surface having an average diameter D between about 0.1 to 5 μ
m, an average length L between about 0.1 to about 5 μ
m, and an average center-to-center distance P between about 0.1 to about 7 μ
m, the D and L dimensions selected to result in a D to L ratio of between about 0.5 to about 2 and a P to D ratio of between about 1 to about 50;a coating having a thickness of less than about 100 nm on the extensions and comprising a polymer having catechol side groups; and
,a cytostatic agent drug secured to at least a portion of the extensions through capillary forces.
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Specification