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Stent device delivery system

A technology of stent device and delivery system, which is applied in the direction of stent and so on

Active Publication Date: 2014-06-04
ANGIOMED GMBH & CO MEDIZINTECHNIK KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the design of delivery catheters, more flexible stents using stent devices that deform longitudinally when the stop acts on the proximal end of the stent device have a greater risk because friction between the outer sheath and the stent creates a concentration Axial force at the proximal end of the stent

Method used

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  • Stent device delivery system
  • Stent device delivery system
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Experimental program
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Embodiment Construction

[0037] figure 1 The radially expandable tubular stent device 2 is shown in a radially expanded state. The stent device 2 is collapsible into a radially contracted state (not shown). The stent device 2 comprises a mesh structure 6 for providing a framework to support the vessel lumen and an inner cover 4 defining the inner surface of the tubular stent device 2 for providing a continuous surface through which body fluids can pass. Preferably, the mesh structure 6 is made of Nitinol, and preferably, the protective layer material 4 is made of ePTFE. Other materials suitable for the mesh structure and protective layer can be used. Similarly, other overcoat materials known in the art may also be used. An outer protective material layer (not shown) of ePTFE may also be provided. The mesh structure 6 comprises a plurality of zigzag stent rings that expand around the lumen and are centered on the longitudinal axis of the stent device. The stent rings are axially connected by bridg...

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PUM

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Abstract

A stent device delivery system, comprising a stent device pusher, a radially expandable stent device and an outer sheath. A tacky material provides a tackiness between the stent device pusher and an inner surface of the stent device. The tacky material is distributed along the length of the stent device. The tacky material serves to resist axial movement of the stent device relative to the stent device pusher as the outer sheath slides axially over the stent device, yet allows the stent device to peel from the tacky material and expand to a radially expanded state as the outer sheath slides axially over the stent device to release the stent device. The tacky material may be compressible such that the stent device is embedded in the compressible tacky material.

Description

technical field [0001] One aspect of the present invention relates to a method of incorporating a self-expanding stent device into a delivery sheath, wherein the stent device, in a radially contracted delivery configuration, is retained axially on an inner catheter and axially into Sheath for delivery to the stent site where the sheath is retracted to release the radially expanded stent device. In another aspect, the present invention relates to a stent device delivery system comprising a percutaneous delivery of a self-expanding stent device within a sheath that is withdrawn proximally to release the stent device at the stent site, and upon retraction of the sheath The inner catheter within the stent device holds the stent device in position during this time. Background technique [0002] A stent device is a tubular vascular implant having a structure capable of supporting a section of a blood vessel or other anatomical lumen against collapse while allowing blood or other ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/95A61F2/966
CPCA61F2/966A61F2002/9505A61F2/95A61F2002/9665A61F2002/9583
Inventor 于尔根·多恩马丁纳·霍夫曼贝亚特·沃尔特斯
Owner ANGIOMED GMBH & CO MEDIZINTECHNIK KG