Method of Forming a Drug-Eluting Medical Device
First Claim
1. A method of forming a stent comprising the steps of:
- utilizing an elongated composite member including an outer member and a core member disposed within a lumen of the outer member;
shaping the composite member into a stent pattern including a waveform having a plurality of struts interconnected by crowns;
forming openings through the outer member;
after the step of shaping the composite member into the pattern, processing the composite member such that the core member is removed from at least a plurality of the struts of the waveform without adversely affecting the outer member and such that the core member is not removed from at least a plurality of the crowns of waveform, thereby leaving the outer member with a lumen in at least a plurality of the struts and the outer member with the core member in at least a plurality of the crowns.
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Accused Products
Abstract
A method of forming a stent includes the steps of forming an elongated composite member or plurality of elongated composite members into a stent pattern having struts interconnected by crowns, the composite member including an outer member and a core member. Openings are formed through the outer member of the composite member. The composite member is processed to remove the core member from at least a plurality of the struts of the stent without adversely affecting the outer member and such that the core member is not removed from at least a plurality of the crowns of the stent, thereby leaving the outer member with a lumen in at least a plurality of the struts and the outer member with the core member in at least a plurality of the crowns. The lumens may then be filled with a biologically or pharmacologically active substance.
148 Citations
24 Claims
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1. A method of forming a stent comprising the steps of:
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utilizing an elongated composite member including an outer member and a core member disposed within a lumen of the outer member; shaping the composite member into a stent pattern including a waveform having a plurality of struts interconnected by crowns; forming openings through the outer member; after the step of shaping the composite member into the pattern, processing the composite member such that the core member is removed from at least a plurality of the struts of the waveform without adversely affecting the outer member and such that the core member is not removed from at least a plurality of the crowns of waveform, thereby leaving the outer member with a lumen in at least a plurality of the struts and the outer member with the core member in at least a plurality of the crowns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of forming a stent comprising the steps of:
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utilizing a plurality of elongated composite members, each composite member including an outer member and an inner member disposed within a lumen of the outer member; shaping each composite member into a waveform having a plurality of struts interconnected by crowns; wrapping each waveform into a cylindrical element; aligning the cylindrical elements along a common longitudinal axis and joining the cylindrical elements together to form a tubular stent; forming openings through the outer members; after the step of shaping the composite members into a waveform, processing the composite members such that the inner member is removed from at least a plurality of the struts of the waveform without adversely affecting the outer member and such that the core member is not removed from at least a plurality of the crowns of the waveform, thereby leaving the outer member with a lumen in at least a plurality of the struts and the outer member with a core member in at least a plurality of the crowns. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification