Stent with auxiliary treatment structure
First Claim
1. A stent for implantation into a treatment site in a body lumen, comprising:
- an elongate, open-ended tubular stent body having a sidewall of interconnected lattice elements or struts defining a plurality of openings through the sidewall, said sidewall being movable from a collapsed position on an end of a catheter for insertion into a body lumen, to a radially expanded position engaged against an inner surface of the body lumen; and
at least one elongate ribbon-like member carried on an outer surface of the tubular stent body, said at least one ribbon-like member having an outer surface for carrying at least one therapeutic agent.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device for treatment of a stenosed body lumen, includes an open-ended cylindrical body carried on a distal end of a catheter for insertion of the device into the body lumen and placement at the stenosed site. The cylindrical body is movable between a collapsed position for insertion into the body lumen, and a radially expanded position pressed against the wall of the body lumen. In one embodiment the body sidewall is formed by a plurality of interconnected struts or elements defining openings therebetween, and at least one elongate ribbon is attached to an outer surface thereof for carrying a therapeutic agent. In another embodiment, the body is formed of interwoven elements defining a mesh-like structure, and the elements may comprise dissimilar materials, such as, e.g., copper and silver. In a further embodiment the body is formed of layers of different materials such as, e.g., copper, silver, and/or steel, laminated together. In a still further embodiment the device is designed for temporary placement of the catheter and body in a body lumen for treatment of a stenosed site, after which the catheter and body are withdrawn. In all forms the body may have an outwardly flared inlet end to reduce turbulence of fluid flowing through it, and/or a gel-like coating of a cholesterol-dissolving or blood clot dissolving agent may be placed on the device.
128 Citations
34 Claims
-
1. A stent for implantation into a treatment site in a body lumen, comprising:
-
an elongate, open-ended tubular stent body having a sidewall of interconnected lattice elements or struts defining a plurality of openings through the sidewall, said sidewall being movable from a collapsed position on an end of a catheter for insertion into a body lumen, to a radially expanded position engaged against an inner surface of the body lumen; and
at least one elongate ribbon-like member carried on an outer surface of the tubular stent body, said at least one ribbon-like member having an outer surface for carrying at least one therapeutic agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A stent for implantation into a treatment site in a body lumen, comprising:
-
an elongate, open-ended tubular stent body having a sidewall of interconnected lattice elements or struts defining a plurality of openings through the sidewall, said sidewall being movable from a collapsed position on an end of a catheter for insertion into a body lumen, to a radially expanded position engaged against an inner surface of the body lumen, wherein;
said stent body comprises a lamination of different metals. - View Dependent Claims (19, 20, 21, 22, 23)
-
-
24. A stent for implantation into a treatment site in a body lumen, comprising:
-
an elongate, open-ended tubular stent body comprising a plurality of interwoven elements defining a plurality of openings through the sidewall, said sidewall being movable from a collapsed position on an end of a catheter for insertion into a body lumen, to a radially expanded position engaged against an inner surface of the body lumen, wherein;
said interwoven elements include elements of at least two different materials. - View Dependent Claims (25)
-
-
26. A device for temporary implantation at a treatment site in a body lumen to deliver a therapeutic agent to the site, wherein:
said device is attached to a distal end of a catheter for insertion into a body lumen and removal from the lumen, said device being movable between a collapsed position on the distal end of the catheter for insertion into and removal from the body lumen, and a radially outwardly expanded position engaged against an inner surface of the body lumen during a treatment procedure, said device and catheter being left in place in the body lumen during the procedure. - View Dependent Claims (27, 28, 29, 30)
-
31. A process for treating a stenosed site in a body lumen, comprising the steps of:
-
providing a device on a distal end of a catheter for insertion into a body lumen;
providing a therapeutic agent on the device for treating the stenosed site;
inserting the catheter and device into a body lumen and positioning the device at the stenosed site;
leaving the catheter and device in place in the body lumen for a predetermined limited time to permit the therapeutic agent to act on the stenosed site; and
removing the catheter and device from the body lumen. - View Dependent Claims (32)
-
-
33. A medical device for insertion into a stenosed site in a body lumen to treat and remove the stenosis, comprising:
an elongate tubular body having an open inlet end, an open outlet end, and a sidewall, said body being movable from a collapsed position on an end of a catheter for insertion into a body lumen, to a radially expanded position engaged against an inner surface of the body lumen, wherein said open inlet end is outwardly flared to provide smooth entry for fluid flowing through said body, thereby reducing turbulence in said fluid.
-
34. A medical device for insertion into a stenosed site in a body lumen to treat and remove the stenosis, comprising:
an elongate tubular body having an open inlet end, an open outlet end, and a sidewall, said body being movable from a collapsed position on an end of a catheter for insertion into a body lumen, to a radially expanded position engaged against an inner surface of the body lumen, wherein a gel-like substance is coated on at least an outer surface of said body, said gel-like substance being selected from the group consisting of a cholesterol-dissolving agent and a blood clot dissolving agent.
Specification