摘要:
A stent comprises a tubular base body which is open on the front sides thereof and has a peripheral wall that is at least partially covered with a coating system consisting of at least one polymer carrier and at least one pharmacologically active substance, which is released into the surrounding tissue once the stent has been implanted in the human or animal body. The invention creates a coating system which enables an optimum local application of the active ingredient. A concentration of the substance, a morphological structure of the carrier(s), a material modification of the carrier(s), and/or a layer thickness of the carrier(s), are predetermined in the longitudinal direction of the stent, in such a way that the elution varies locally in the longitudinal direction of the stent and is determined according to the pathophysiological and/or rheological conditions to be expected during the application.
摘要:
A stent, in particular a coronary stent, comprising at least two tubular portions which are arranged adjacently in the longitudinal direction of the stent and which comprise a plurality of interconnected, substantially cell-shaped elements which have an orientation and are connected together in the longitudinal direction of the stent by way of at least one first connecting means, wherein the elements are of such an arrangement and/or configuration that the ends of the elements which are in the longitudinal direction of the stent define an edge contour extending around the stent in a wave-like configuration in the peripheral direction thereof, and wherein the mutually adjoining edge contours of two tubular portions extend around the stent substantially in in-phase relationship.
摘要:
Stent, as well as a method and device for fabricating the stent, wherein the stent has a tubular lattice structure comprising individual struts and at least one strut of which at least one longitudinal section runs with at least one directional component in the radial circumferential direction of the stent, wherein the surface of the longitudinal section facing the outside of the stent is curved only about the longitudinal axis of the stent. According to the invention, the surface of longitudinal section of the strut, which surface faces the inside of the stent, has such a curvature that the strut cross section is fluidically optimized.
摘要:
A device for coating a stent, including a holder for the stent, a spraying unit comprising a spray mandrel and an air nozzle. The spray mandrel, the air nozzle and the holder are configured and disposed relative to each other such that the spray mandrel projects from one side into the stent during coating and the air nozzle projects into the stent from the opposing side. A method for coating a stent employs the device. Stents that can be obtained according to the method.
摘要:
The invention relates to an implant comprising an active-agent-containing coating which covers the implant at least in sections. The coating is composed of at least two subsections; a first subsection contains the at least one active substance, and a second subsection contains an auxiliary agent.
摘要:
An implant for releasing an active substance into a vessel through which a body medium flows. The implant release an active substance into a vessel through which a body medium flows downstream from the location of the implant. A base of a biodegradable material is a carrier of the active substance to be released. The body medium flows past the implant and the active substance is release. The implant is configured so that the active substance does not contact a vessel wall at the location of implant.
摘要:
An agent depot for mechanical connection to a surface of an endovascular implantable body, comprising one or more polymers, one or more bioactive agents, the agent depot being mechanically connectable to the implantable body by a force fit or an adhesive.
摘要:
Stent, as well as a method and device for fabricating the stent, wherein the stent has a tubular lattice structure comprising individual struts and at least one strut of which at least one longitudinal section runs with at least one directional component in the radial circumferential direction of the stent, wherein the surface of the longitudinal section facing the outside of the stent is curved only about the longitudinal axis of the stent. According to the invention, the surface of longitudinal section of the strut, which surface faces the inside of the stent, has such a curvature that the strut cross section is fluidically optimized.
摘要:
The present invention relates to a method for manufacturing an implant, in particular an intraluminal endoprosthesis, having a body containing metallic material, preferably iron. The following manufacturing method is provided for promotion of the anti-inflammatory effect of the implant: (i) providing the body of the implant; (ii) producing an at least partially closed pore structure in a portion of the structure of the implant body close to the surface; and (iii) incorporating NOX into the cavities of the pore structure. Also described is an implant manufactured in this manner.
摘要:
Stent, as well as a method and device for fabricating the stent, wherein the stent has a tubular lattice structure comprising individual struts and at least one strut of which at least one longitudinal section runs with at least one directional component in the radial circumferential direction of the stent, wherein the surface of the longitudinal section facing the outside of the stent is curved only about the longitudinal axis of the stent. According to the invention, the surface of longitudinal section of the strut, which surface faces the inside of the stent, has such a curvature that the strut cross section is fluidically optimized.