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Stent Graft

A stent-graft, membrane fixation technology, applied in stents, medical science, blood vessels, etc., can solve problems such as tissue irritation, hook and thread durability problems, damage, etc.

Active Publication Date: 2020-12-04
BENTLEY INNOMED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, the durability of hooks and threads (which are exposed to high intravascular friction) is always questionable
In addition, there is a risk of tissue irritation or damage due to the hooks sticking out or the edges protruding between the scaffold and the membrane

Method used

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  • Stent Graft
  • Stent Graft
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] figure 1 A stent 1 is shown in a planar representation which is designed to comprise a meandering ring segment 3 and a meandering ring segment 4 . The ring segment 3 is a peripheral segment or end segment, ie it forms the end of the stent 1 . The adjacent ring segment 4 is connected to the peripheral ring segment 3 via a straight sheet 6 whereby the sheet 6 extends from the outer arch 9 of the curvature of the peripheral ring segment 3 to the inner arch of the adjacent ring segment 4 Part 8.

[0045] The bend of the second ring segment 4 is provided with blind tabs 5 arranged on its outer arch 10 which do not establish any connection to the adjacent ring segment 3 , which are truncated without connection. These blind tabs 5 are used to extend the bend of the second ring segment 4; after expansion of the stent 1, said bend is elongated and in this elongated state can no longer hold the cover fixed behind it firmly. stay in place. Thus, the blind tab 5 increases the c...

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PUM

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Abstract

The present application relates to a stent graft comprising a stent (1) and at least one membrane (2), the stent (1) comprising a plurality of annular segments (3, 4) having a meandering configuration, the plurality of annular segments The segments (3, 4) are arranged side by side and connected to each other by webs (6), the at least one membrane (2) covers the entire outside of the stent (1), is wrapped inwards at the ends of the stent and is fixed at the ring joints between the ring of the segment (4) and the web (6) that joins the adjacent ring segments (3, 4) to each other, wherein the membrane (2) is fixed on the second Between at least two rings of a ring segment (4) and a web (6) to an adjacent end ring segment (3).

Description

technical field [0001] The present invention relates to a covered stent comprising a stent comprising a plurality of annular segments arranged side by side and interconnected by webs, said membrane covering the entire outside of the stent, wrapped inwardly at the ends of the stent and are fixed between the individual rings of the ring segments, and between the connecting pieces between adjacent ring segments. Furthermore, the invention also relates to the use of such a stent-graft for the treatment of vascular malformations and to a method for the manufacture of such a stent-graft. Background technique [0002] Stent grafts of this type are used in blood vessels, for example, to facilitate support of abnormally narrowed, dilated or damaged blood vessels. Combinations of stents and membranes are also used to treat elongated vessel segments that require treatment and require implants of greater length and primarily flexibility. In particular, stent grafts are utilized to bri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/07A61F2/915
CPCA61F2/915A61F2002/075A61F2/07A61F2210/0014A61F2/90A61F2/852A61F2/89
Inventor M·奥布拉多维奇R·布莱古洛
Owner BENTLEY INNOMED