Method of making a variable surface area stent
First Claim
1. A method of manufacturing a stent, the stent including a body including a plurality of struts, the struts defining a first end segment of the body, an opposing second end segment of the body, and a middle segment of the body positioned between the first and second end segments, the method comprising depositing a therapeutic agent on the stent so that the first or second end segment has a lesser amount or concentration of the agent than the middle segment as a result of a difference in radius of struts at the first or second end segment as compared to radius of struts at the middle segment.
0 Assignments
0 Petitions
Accused Products
Abstract
A stent of variable surface area as determined by stent struts. The stent can have a variable surface area per unit length which accommodates a therapeutic agent. A patterned distribution of therapeutic agent can be provided throughout the stent. The stent can have an increased level of therapeutic agent near an end of the stent. A decreased level of therapeutic agent can be provided near an end of one embodiment of a stent. Indentations can be provided at the surface of the stent with therapeutic agent disposed therein. The stent can be cut with struts of variable thickness to provide the variable stent surface area.
-
Citations
19 Claims
- 1. A method of manufacturing a stent, the stent including a body including a plurality of struts, the struts defining a first end segment of the body, an opposing second end segment of the body, and a middle segment of the body positioned between the first and second end segments, the method comprising depositing a therapeutic agent on the stent so that the first or second end segment has a lesser amount or concentration of the agent than the middle segment as a result of a difference in radius of struts at the first or second end segment as compared to radius of struts at the middle segment.
-
7. A method of producing a stent, the stent including a body having a first end segment, an opposing second end segment, and a middle segment positioned between the first and second end segments, the method comprising:
-
manufacturing the stent body so that the first or second end segment has a lesser therapeutic agent loading surface area per unit length of the body than the middle segment, wherein manufacturing the stent body includes forming a plurality of interconnected struts such that a radius of at least some of the individual struts of the first or second end segment is different in size from a radius of the struts of the middle segment; and depositing a therapeutic agent on the stent so that the first or second end segment has a lesser amount or concentration of the agent than the middle segment as a result of the difference in the radius of the struts. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of manufacturing a stent, the stent including a body having a first end segment, an opposing second end segment, and a middle segment positioned between the first and second end segments, the method comprising:
-
forming a plurality of interconnected struts by cutting a stent pattern from a substrate such that a radius of at least some of the individual struts of the first and second end segments is different in size from a radius of the struts of the middle segment; and depositing a therapeutic agent on the stent so that the first and second end segments individually have a lesser amount or concentration of the agent than the middle segment as a result of the difference between the radius of the at least some of the individual struts of the first and second end segments and the radius of the struts of the middle segment. - View Dependent Claims (17, 18, 19)
-
Specification