Stent having discontinuous coating in the form of coating islands
AssigneeBiotronik Mess-und Therapiegeraete GmbH & Co. Ingenieurbuero Berlin
InventorsMax Schaldach, Curt Kranz
Life of this patent
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Abstract
A stent has a surface with an irregular coating formed on that surface. The irregular coating provides coating islands, especially coating islands that are substantially round. In some embodiments, the coating islands are arranged at a greater spacing in regions involving a greater degree of local stretching of the stent surface upon stretching of the stent than in regions involving a lesser degree of local stretching of the stent surface. In other embodiments, the coating islands are smaller in regions involving a greater degree of local stretching of the stent surface upon stretching of the stent than in regions involving a lesser degree of local stretching of the stent surface.
Claims12
A stent, comprising:
- a surface with a non-uniform coating formed thereon,
- wherein the non-uniform coating comprises coating islands on the surface,
- wherein the coating islands are substantially round,
- wherein the spacing of the coating islands, prior to radial expansion, is dependent upon the degree of local stretching during radial expansion, and
- wherein the coating islands are arranged at a greater spacing in regions of the stent surface involving a greater degree of local stretching upon stretching of the stent than in regions involving a lesser degree of local stretching of the stent surface.
A stent, comprising:
- a surface with a non-uniform coating formed thereon,
- wherein the non-uniform coating comprises coating islands on the surface,
- wherein the coating islands are substantially round,
- wherein the spacing of the coating islands, prior to radial expansion, is dependent upon the degree of local stretching during radial expansion, and
- wherein the coating islands are smaller in regions of the stent surface involving a greater degree of local stretching upon stretching of the stent than in regions involving a lesser degree of local stretching of the stent surface.
Dependencies are inferred from the claim text.