| 摘要 |
The invention relates to a device for introducing an implant (1) for blood vessels into the human body, comprising an implant (1), an insertion wire (14) and a tubular envelope (13), wherein the implant (1) is deformable in such a way that, in a microcatheter, it adopts a shape of reduced diameter and, at the site of implantation, after the external force exerted by the microcatheter has ceased, expands in order to adapt to the diameter of the blood vessel, the proximal end of the implant (1) has connection elements (6) to a holding element (15), via which the implant (1) is coupled to the insertion wire (14), and the holding element (15) has peripheral recesses (16) into which the connection elements (6) are fitted, wherein the tubular envelope (13) is drawn with a form fit over the holding element (14) with the fitted connection elements (6), such that the connection elements (6) are fixed in the recesses (16) of the holding element (15) and, by pulling the tubular envelope (13) back in the proximal direction, the implant (1) is released, wherein the external diameter of the tubular envelope (13) varies between the proximal end and the distal end. In this way, some portions of the envelope (13) have a high degree of flexibility for transport through narrow blood vessels, while the envelope (13) as a whole has sufficient tensile strength upon release of the implant (1). |
