Stent capable of attachment within a body lumen
First Claim
1. A method of securing an intravascular stent in a patient'"'"'s vasculature, comprising:
- placing an intravascular stent over a balloon catheter, said stent having a length and circumference, a plurality of protrusions projecting from about the length and circumference of said stent, and a plurality of apertures about the length and circumference of said stent;
positioning said intravascular stent in a patient'"'"'s vasculature with said balloon catheter;
expanding said balloon catheter to expand said stent from a reduced diameter to an enlarged diameter form; and
securing said stent in said patient'"'"'s vasculature when said stent is in said enlarged diameter form, said securement occurring through said protrusions engaging said apertures as well as said protrusions engaging said patient'"'"'s vasculature.
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Accused Products
Abstract
An expandable, balloon catheter delivered intravascular stent, especially adapted for cardiovascular applications, having a plurality of protrusions on its outer surface for engaging the artery walls in which it is disposed. The protrusions are formed from the body of the stent in a unitary, one-piece manner. Apertures are formed in the stent body from the space vacated in the body by the material forming the protrusions. When the stent is expanded by the balloon catheter, the protrusions engage both the apertures and the artery walls, to lock the stent into the expanded diameter. In this way axial displacement and radial collapse of the stent is avoided. The protrusions are arranged in a plurality of shapes, sizes and patterns. The stent may be made of a bioabsorbable material and/or a therapeutic drug delivery material.
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Citations
17 Claims
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1. A method of securing an intravascular stent in a patient'"'"'s vasculature, comprising:
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placing an intravascular stent over a balloon catheter, said stent having a length and circumference, a plurality of protrusions projecting from about the length and circumference of said stent, and a plurality of apertures about the length and circumference of said stent; positioning said intravascular stent in a patient'"'"'s vasculature with said balloon catheter; expanding said balloon catheter to expand said stent from a reduced diameter to an enlarged diameter form; and securing said stent in said patient'"'"'s vasculature when said stent is in said enlarged diameter form, said securement occurring through said protrusions engaging said apertures as well as said protrusions engaging said patient'"'"'s vasculature. - View Dependent Claims (2, 3, 4, 5)
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6. A method of securing a stent within a body lumen, comprising:
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placing a stent over an expandable catheter, said stent having a length and circumference, a plurality of protrusions about said length and circumference, and a plurality of apertures about said length and circumference; introducing the stent and expandable catheter into a body lumen; positioning said stent at a desired location in the body lumen with said expandable catheter; expanding said expandable catheter to expand said stent from a reduced diameter to an enlarged diameter form; and securing said stent in said enlarged diameter form at the desired location in said body lumen, said securement occurring through said protrusions securing said stent in its enlarged diameter form, said protrusions engaging against walls of said body lumen. - View Dependent Claims (7, 8, 9, 10)
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11. A method of securing a stent within a body lumen, comprising:
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placing a stent over an expandable catheter, said stent having a length and circumference, a plurality of protrusions projecting along said length and circumference, and a plurality of apertures about said length and circumference, said apertures corresponding to the shape of the protrusions; introducing the stent and expandable catheter into a body lumen; positioning said stent at a desired location in the body lumen with said expandable catheter; expanding said expandable catheter to expand said stent from a reduced diameter to an enlarged diameter form; locking said stent in said .enlarged diameter form, said locking occurring through one or more of the protrusions engaging one or more of the apertures; and securing said stent at the desired location in said body lumen, said securement occurring through said protrusions engaging against walls of said body lumen. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification