Stent
First Claim
1. A stent, particularly a coronary stent, comprising at least one thin-walled, tubular element, the generated surface of which is in the form of an open network and has apertures bounded by narrow, strap-like elements, the strap-like elements being formed from the remaining material of the tubular wall from which the material in the area of the apertures was removed, characterised in that pairs of transversely expandable elements are directly joined at the ends longitudinally of the stent, each of the two expandable elements, in the form of a flattened ring element made up of straps, being joined transversely by a strap-like element to another transversely expandable element, which is itself not directly joined at the end to another expandable element, which is in turn joined by a strap-like element to one of the first-mentioned, transversely expandable elements, the strap-like elements each being inclined to the transverse direction at an angle such that this angle is reduced on expansion of the stent, and the non-joined adjacent ends of transversely expandable elements thus move away from each other.
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Accused Products
Abstract
A stent, especially a coronary stent, comprising at least one thin-walled, tubular member with an openly reticular outer surface containing recesses, which are defined by narrow weblike members. Weblike members are formed from the remaining material from the tube wall once the material has been removed from the recess area. The weblike members are shaped in such a way as to substantially reduce the deformation to which a weblike member is subjected between connecting areas with other weblike members during expansion. The invention also relates to a method of producing the like.
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Citations
18 Claims
- 1. A stent, particularly a coronary stent, comprising at least one thin-walled, tubular element, the generated surface of which is in the form of an open network and has apertures bounded by narrow, strap-like elements, the strap-like elements being formed from the remaining material of the tubular wall from which the material in the area of the apertures was removed, characterised in that pairs of transversely expandable elements are directly joined at the ends longitudinally of the stent, each of the two expandable elements, in the form of a flattened ring element made up of straps, being joined transversely by a strap-like element to another transversely expandable element, which is itself not directly joined at the end to another expandable element, which is in turn joined by a strap-like element to one of the first-mentioned, transversely expandable elements, the strap-like elements each being inclined to the transverse direction at an angle such that this angle is reduced on expansion of the stent, and the non-joined adjacent ends of transversely expandable elements thus move away from each other.
Specification