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Artificial aneurysm neck and production method thereof

A tumor neck and artificial technology, applied in the field of artificial tumor neck and its preparation, can solve the problems of branch blood vessels affecting the blood supply of organs, affecting the blood supply of branch blood vessels, and high requirements on the length of the tumor neck, so as to eliminate the risk of rupture and reduce the length of the tumor neck. , the effect of improving production efficiency

Inactive Publication Date: 2016-01-06
SHANGHAI MICROPORT ENDOVASCULAR MEDTECH (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is no consensus at present, the covering of branch vessels has the risk of affecting the blood supply of organs
Therefore, the existing products have the following deficiencies: 1) The requirement for the length of the tumor neck is high, resulting in limited applicable cases; 2) The blood supply of branch vessels is prone to be affected during the operation

Method used

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  • Artificial aneurysm neck and production method thereof
  • Artificial aneurysm neck and production method thereof
  • Artificial aneurysm neck and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Please continue to refer to figure 2 , the outer wall 5 and the built-in channel 3 of the artificial tumor neck provided in this embodiment are both composed of a metal stent and a tubular covering. The metal support 31 is composed of a plurality of Z-shaped wave-shaped support rings. The metal bracket 31 is made of nickel-titanium alloy, and the tubular coating is made of PET. Concrete preparation steps are as follows:

[0050] First, see Figure 5 , bend and weave the metal wire on the flat-panel weaving mold, take off the flat-panel braided bracket after a heat treatment and set the shape, use the connecting pipe to connect the wire ends at both ends of the bracket and fix it by clamping, and put it on Secondary heat treatment is carried out on the outside of the steel pipe with the required diameter to form a plurality of bracket rings with different diameters. After the shaping is completed, the bracket ring is polished and other treatments.

[0051] Next, pl...

Embodiment 2

[0054] Please continue to refer to figure 2 , the artificial tumor neck provided in this embodiment is composed of a metal stent 31 and a tubular covering film. The metal support 31 is composed of a plurality of Z-shaped wave-shaped support rings. The support ring is made of cobalt-based alloy wire. Concrete preparation steps are as follows:

[0055] First, see Figure 5 , the metal wire is bent and wound on the flat weaving mold, and the wire heads at both ends are fixed by laser welding to obtain a metal bracket ring of the required size.

[0056] The covering film is formed by hot melting of multi-layer ePTFE film, which is divided into inner, middle and outer layers. Wrap the metal stent ring between the middle membrane and the outer membrane for fixation, forming figure 2 The outer wall 3 of the artificial neck is shown. The two ends of the inner film and the middle film are sealed and connected, and the space between the inner film and the middle film is filled w...

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Abstract

The invention discloses an artificial aneurysm neck and a production method thereof. The artificial aneurysm neck comprises a tubular outer wall and a tubular inner passage arranged in the outer wall, the inner passage is of a hollow structure, and two ends of the inner passage are hermetically connected with the outer wall. The outer wall or / and the inner passage is composed of a tubular tectorial membrane and a metal support arranged on the surface of the tubular tectorial membrane. The artificial aneurysm neck is guided to a normal aorta at the near end of a lesion position and then released during operation, the metal support supports the tectorial membrane on the wall of a normal blood vessel, and fitting between the artificial aneurysm and the normal blood vessel is guaranteed; a tectorial membrane support is enabled to isolate aneurysm from blood flow in a blood vessel cavity, and a blood flow passage of the aorta and branched blood vessels is built; due to using of the artificial aneurysm neck, requirements on structure of the tectorial membrane support are lowered, the artificial aneurysm neck can be realized through a straight-tube tectorial membrane support, requirements on length of the aneurysm neck are low, the artificial aneurysm neck is suitable for cases with extremely short aneurysm necks, production process is simplified obviously, processing cost can be lowered, and production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an artificial tumor neck and a preparation method thereof. Background technique [0002] Aortic disease is one of the deadliest and most difficult to treat vascular surgical diseases. Traditional surgical treatment is difficult to perform and has a large surgical trauma. Therefore, endovascular interventional treatment using stent grafts has been widely used in clinical treatment in recent years. In interventional therapy, the stent graft is sent to the location of aortic lesion through the delivery system through the femoral artery incision, so as to protect the diseased blood vessel and repair the aortic lesion. [0003] At present, there are various types of covered stent grafts used in the interventional treatment of aortic aneurysms in the market, each of which has its own characteristics and different indications. However, when most stent-graft products treat aortic aneurys...

Claims

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Application Information

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IPC IPC(8): A61F2/91
CPCA61F2/90
Inventor 李中华严冬梅刘载淳朱清袁振宇苗铮华符伟国董智慧
Owner SHANGHAI MICROPORT ENDOVASCULAR MEDTECH (GRP) CO LTD
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