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Curved stent graft assembly

A technology of grafts and components, applied in the field of stent grafts), can solve problems such as difficult design of stent graft components, and achieve the effect of reducing the risk of rupture or tearing, reducing the generation of internal stress, and reducing the risk of damage

Inactive Publication Date: 2013-08-21
ISIS INNOVATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the curvature and shape of the curved lumen varies from patient to patient, making it difficult to design a stent-graft assembly that accommodates individual patients

Method used

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  • Curved stent graft assembly

Examples

Experimental program
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Embodiment Construction

[0031] Figures 2 to 4 Shown is a stent-graft assembly 10 designed for the treatment of TAA, wherein the lumen to be treated is in the aorta 1 and the treatment site is in the arch 2 where the aneurysm 4 has been formed, as in figure 1 shown.

[0032] The stent graft assembly 10 contains a flexible material graft 11 supported on a stent frame formed by a series of wire loops 12, each loop 12 in a zigzag pattern around the longitudinal axis of the graft 11 extend. To provide radial contraction of the stent-graft assembly 10 for delivery, the rings 12 can each be opened and closed by opening and closing their serrations. figure 2 shown expanded state and Figure 4 deformation between the radially contracted states shown. This facilitates delivery and deployment of the stent-graft assembly 10 .

[0033] Said ring 12 has a configuration known per se. The ring 12 can be prepared using conventional techniques, for example by patterning a wire or by cutting from the tube mater...

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Abstract

A stent graft assembly comprises a graft of flexible material supported by a stent frame that is configured to be deformable between an expanded state and a radially collapsed state. The graft of flexible material has the shape of a tube that is curved along a longitudinal axis of the tube when the graft is in an expanded, undeformed state. The stent graft assembly is deformable into a state in which the graft is deformed into the shape of a tube that is straight. The stent graft assembly may be designed for treatment of a thoracic aorta aneurysm.

Description

technical field [0001] The present invention relates to a stent-graft assembly (often just referred to as a stent-graft) that is curved at the treatment site. Background technique [0002] A stent-graft assembly is a medical device designed to be delivered to a treatment site in a lumen in the human body (or even an animal body), such as the aorta, coronary arteries, or esophagus, etc. tubular flexible material graft. Stent graft assemblies provide some type of medical treatment, often used in endovascular procedures, such as for the treatment of aneurysms, such as aortic aneurysms. An aortic aneurysm is a weakened area that forms in the wall of the aorta, the aorta that carries blood from the heart, through the chest and abdomen, to the rest of the body. While stretched blood vessels may occasionally cause discomfort, there is a greater concern about the risk of ruptured blood vessels, which can cause severe pain; massive internal bleeding, which, if left untreated, can l...

Claims

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Application Information

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IPC IPC(8): A61F2/07A61F2/82A61F2/89
CPCA61F2/89A61F2002/828A61F2002/075A61F2/07
Inventor 周翔尤忠
Owner ISIS INNOVATION LTD
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