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Bifurcated stent and stent system

A branch and side support technology, which is applied in the field of branch supports and support systems, can solve the problems of small support effects and the inability of flexible side arms to achieve support effects, etc.

Pending Publication Date: 2021-01-01
巴伐利亚州公立霍夫应用科学大学材料科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A disadvantage of the stent-graft disclosed in EP 1 791 498 B1 is that a complex release device must be used to release the stent-graft
Furthermore, the flexible side arms achieve no or only a small supporting effect in the region of the opening in the tubular body

Method used

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  • Bifurcated stent and stent system
  • Bifurcated stent and stent system
  • Bifurcated stent and stent system

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Embodiment Construction

[0044] In the following description of alternative embodiments, identical and / or at least similar features are provided with the same reference numerals. Unless specified otherwise, the configuration and / or mode of operation of these reference symbols correspond to the configuration and mode of operation of the above-mentioned features.

[0045] Figure 1a A branched stent 1 is shown with a main arm 2 and side arms 3 shown in dashed lines. Therein, the main arm 2 has a substantially tubular main chamber 4 . The main arm 2 is made of a shape-memory material, preferably with a drug coating, such as Nitinol, which is held in a somewhat compressed state by a further holding member, not shown here, so that it can be simply Move this main arm to its specific position. In this compressed state, the main arm 2 can be longer than in the subsequent second state of this main arm, in which the side arms 3 are located outside the main cavity 4 ( Figure 1b ).

[0046] The side arm 3 is...

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PUM

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Abstract

The invention relates to a bifurcated stent (1) made from strand-like starting material, in particular from filaments and / or wires (9), with a main arm (2), which has a substantially tubular main lumen (4), and a side arm (3), which branches off from the main arm (2), wherein the side arm (3) can be transferred from a first state, in which the side arm (3) lies at least partially, preferably completely, inside the main lumen (4), to a second state, in which the side arm (3) lies outside the main lumen (4), wherein the side arm (3) in the second state has a substantially tubular side lumen (6)which is fludically connected to the main lumen (4). According to the invention, the side arm (3) comprises a shape-memory material. The invention further relates to a stent system (8) with a bifurcated stent (1) according to the above description and with a side stent (7), wherein the bifurcated stent (1) has a main arm (2) and a side arm (3), and the diameter of one end of the side stent (7) isapproximately equal to the diameter of the end of the side arm (3) directed away from the main arm (2).

Description

technical field [0001] The invention relates to a branched stent made of a fibrous starting material, in particular wire and / or wire, comprising a main arm with a substantially tubular main lumen and side arms branching off from said main arm. arm, wherein the side arm can be transferred from a first state, in which the side arm is at least partially, preferably completely, within the main cavity, to a second state, in which the second state , the side arm is located outside the main lumen, wherein the side arm has a substantially tubular side lumen in fluid connection with the main lumen in the second state. Furthermore, the invention also relates to a support system with branch supports and side supports. Background technique [0002] A stent-graft with a tubular body is known from EP 1 791 498 B1. A stent-graft is inserted into a lumen of a human or animal body to repair or protect a blood vessel wall in a human or animal patient, for example to span an aneurysm within ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/90A61F2/07A61F2/06A61F2/856
CPCA61F2/07A61F2/856A61F2/90A61F2002/061A61F2002/065A61F2210/0014D04C1/06D10B2509/06A61F2/86
Inventor 弗朗克·菲克尔玛丽尔利丝·贝克尔
Owner 巴伐利亚州公立霍夫应用科学大学材料科学研究所
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