Intraluminal medical device having improved visibility
First Claim
1. A stent formed of at least one structural material and having a pattern including a plurality of interconnected circumferential bands including a proximal end band and a distal end band, each of said plurality of said circumferential bands having a distal end and a proximal end, and each of said plurality of circumferential bands formed of a plurality of struts, adjacent struts interconnected by end portions, the end portions having inner turns and outer turns, at least some of the end portions being elongated and other end portions being non-elongated and having a predetermined length, the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the proximal end of the distal end band, the outer turns of the elongated end portions of the proximal end of the proximal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the proximal end of the proximal end band, and the outer turns of the elongated end portions of the distal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the distal end of the distal end band, at least one of said elongated end portions configured to serve as a fiducial marker.
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Accused Products
Abstract
A stent may be formed of at least one structural material having a pattern including at least one serpentine structure, which extends about the longitudinal axis of the stent. The structure is formed of a plurality of struts. Adjacent struts are interconnected by end portions having inner turns and outer turns. At least some of the end portions are elongated and other end portions are non-elongated and have a predetermined length. At least one of said elongated end portions is configured to serve as a fiducial marker.
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Citations
32 Claims
- 1. A stent formed of at least one structural material and having a pattern including a plurality of interconnected circumferential bands including a proximal end band and a distal end band, each of said plurality of said circumferential bands having a distal end and a proximal end, and each of said plurality of circumferential bands formed of a plurality of struts, adjacent struts interconnected by end portions, the end portions having inner turns and outer turns, at least some of the end portions being elongated and other end portions being non-elongated and having a predetermined length, the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the proximal end of the distal end band, the outer turns of the elongated end portions of the proximal end of the proximal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the proximal end of the proximal end band, and the outer turns of the elongated end portions of the distal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the distal end of the distal end band, at least one of said elongated end portions configured to serve as a fiducial marker.
- 10. A stent formed of at least one structural material, said stent having a pattern including at least one first serpentine structure extending about the longitudinal axis, the stent is formed of a plurality struts, said at least one first serpentine structure having a distal end and a proximal end, said at least one first serpentine structure interconnected at said distal end to a proximal end of a second serpentine structure extending about the longitudinal axis of the stent, adjacent struts are interconnected by end portions having inner turns and outer turns at each of said distal end and said proximal end of said at least one serpentine structure, at least some of the end portions being elongated and other end portions being non-elongated and having a predetermined length, the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the proximal end of the distal end band, the outer turns of the elongated end portions of the proximal end of the proximal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the proximal end of the proximal end band, and the outer turns of the elongated end portions of the distal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the distal end of the distal end band, and at least some of the end portions at an end of the stent having extensions which may be configured for serving as fiducial markers for enhanced imaging modality, and having other end portions with no extensions.
- 16. A stent formed of a structural material, said stent having a pattern including a circumferential band having a proximal end and a distal end, said circumferential band formed of a plurality of struts, pairs of adjacent struts interconnected by end portions having inner turns and outer turns, and at the proximal end of the circumferential band at least some of the end portions being elongated as defined by the inner turns and outer turns of said at least some of the end portions and other end portions being non-elongated, said elongated end portions having at least one void, the at least one void within the elongated end portions, said void for accepting at least one fiducial marker, and at the distal end of the circumferential band, the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the proximal end of the proximal end band, and the outer turns of the elongated end portions of the distal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the distal end of the distal end band.
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20. A method of forming stent having fiducial markers, the method comprising the steps of:
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providing a tube of structural material; and cutting a stent pattern in said structural material, said stent pattern having a plurality of interconnected circumferential bands, each circumferential band having a proximal end and a distal end and formed of a plurality of struts, pairs of adjacent struts interconnected by an end portion, each end portion having an inner turn and outer turn at least some of the end portions being elongated as defined by the inner turn and outer turn of each of said at least some of the end portions and other end portions being non-elongated, the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the proximal end of the distal end band, the outer turns of the elongated end portions of the proximal end of the proximal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the proximal end of the proximal end band, and the outer turns of the elongated end portions of the distal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the distal end of the distal end band, said elongated end portions adapted for enhanced imaging modality portions. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method of forming a stent of at least one structural material, said method comprising the steps of:
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providing a tube of structural material; and cutting a pattern in said tube, said pattern including a plurality of interconnected circumferential bands each circumferential band formed of a plurality struts and having a distal end and a proximal end, pairs of adjacent struts interconnected by end portions at each of said proximal end and said distal end of said circumferential band, the end portions having inner turns and outer turns, at least some of the end portions being non-elongated and having a predetermined length, the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band are substantially unaligned longitudinally with the outer turns of at least one of the non-elongated end portions at the distal end of the proximal end band, the inner turns of at least one of the non-elongated end portions of the proximal end of the distal end band are substantially unaligned longitudinally with the inner turns of at least one of the non-elongated end portions at the proximal end of the distal end band, the outer turns of the elongated end portions of the proximal end of the proximal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the proximal end of the proximal end band, and the outer turns of the elongated end portions of the distal end of the distal end band are substantially aligned longitudinally with the outer turns of the non-elongated end portions of the distal end of the distal end band, and at least some of the end portions having extensions for accepting fiducial markers for enhanced imaging modality. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification