Stent with channel(s) for containing and delivering a biologically active material and method for manufacturing the same
First Claim
1. An implantable stent prosthesis for delivery of a biologically active material to a body lumen of a patient, wherein the stent comprises:
- (a) a sidewall having a portion comprising a plurality of struts defining a plurality of openings, each strut having an exterior surface, and (b) at least one channel for containing a biologically active material, wherein the channel is attached to the sidewall and the channel comprises a channel space defined by a single continuous channel wall.
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Accused Products
Abstract
An implantable stent prosthesis comprises a sidewall and at least one channel for containing a biologically active material. A method for making such stent prosthesis is also disclosed. In the method, at least one tube or mandrel is placed in contact with a covering material on a stent and surrounded by the covering material to form a channel. Alternatively, a channel can be formed by covering tube or mandrel with a channel material and exposing the covered tube or mandrel to an appropriate treatment. The channel can be attached to a sidewall of a stent or attached to a strut material to form a stent wire. A method of treating an afflicted area of a body lumen by implanting the stent prosthesis is also disclosed.
203 Citations
43 Claims
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1. An implantable stent prosthesis for delivery of a biologically active material to a body lumen of a patient, wherein the stent comprises:
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(a) a sidewall having a portion comprising a plurality of struts defining a plurality of openings, each strut having an exterior surface, and (b) at least one channel for containing a biologically active material, wherein the channel is attached to the sidewall and the channel comprises a channel space defined by a single continuous channel wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for making an implantable stent prosthesis having (1) a sidewall having a portion comprising a plurality of struts defining a plurality of openings, each strut having an exterior surface, and (2) at least one channel for containing a biologically active material, wherein the channel is attached to the sidewall, and the channel comprises a channel space defined by a single continuous channel wall, wherein the method comprises the steps of:
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(a) obtaining the stent covered by a layer of a stent covering material;
(b) placing at least one tube or mandrel in contact with the covering material, (c) surrounding the tube or mandrel with the covering material, and (d) forming the channel so that the channel is located within the covering material and the single continuous channel wall surrounds the tube or mandrel, and wherein the channel has two open ends. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
(e) removing the tube or mandrel from the channel; and
(f) introducing a biologically active material into the channel.
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34. The method of claim 33, which further comprises the step of sealing at least open end of the channel by exposing the end to a treatment selected from the group consisting of heat treatment, chemical treatment and treatment with an adhesive.
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35. The method of claim 33, wherein the tube is hollow and is placed in contact with the covering material in a manner such that an end of the tube protrudes from one of the open ends of the channel, and the biologically active material is introduced into the channel by injection of the biologically active material into the protruding end of the hollow tube.
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36. The method of claim 33, wherein the biologically active material is introduced into the channel by diffusion of the biologically active material.
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37. The method of claim 28, which further comprises covering the tube or mandrel with a channel material before placing the tube or mandrel in contact with the covering material.
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38. The method of claim 28 wherein the covering material is selected from the group consisting of silicones, polyurethanes, thermoplastic elastomers, ethylene vinyl acetate copolymers, polyolefin elastomers, EPDM rubbers, polytetrafluoroethylene and expanded polytetrafluoroethylene.
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39. The method of claim 28, wherein the mandrel is comprised of a biologically active material.
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40. A method of treating an afflicted area of a surface of a body lumen comprising:
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(a) implanting into the body lumen a stent prosthesis having (1) a sidewall having a portion comprising a plurality of struts defining a plurality of openings, each strut having an exterior surface, and (2) at least one channel attached to the sidewall, wherein the channel comprises a channel space defined by a single continuous channel wall, and the channel contains a biologically active material; and
(b) delivering the biologically active material to an afflicted area. - View Dependent Claims (41, 42, 43)
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Specification