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Balloon expansion type absorbable vein stent

An expansion type, venous technology, applied in the field of medical devices, can solve the problems of venous re-occlusion, venous thrombosis, etc., and achieve the effect of slow absorption, fast absorption and good support force

Pending Publication Date: 2022-01-04
周玉斌 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing clinical stents are all metal non-absorbable stents, and this metal non-absorbable stent left in the vein for a long time will cause complications such as venous thrombosis and venous re-occlusion

Method used

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  • Balloon expansion type absorbable vein stent
  • Balloon expansion type absorbable vein stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] like figure 1 As shown, the balloon expandable absorbable venous bracket of the present embodiment has a cylindrical mesh structure, and the stent has two sections, and a segment is supported from adjacent normal venometric brackets 1 at adjacent to the lesion, and the other is supported in vein occlusion. Or the velocity bracket 2 at the narrow, adjacent normal venous bracket 1 is greater than or equal to (the present embodiment is greater than) the mesh pore diameter of the lesser bracket 2, the bracket is made of absorbable material, the lesion bracket 2 The absorption time is longer than the absorption time of the adjacent normal venous bracket 1; the bracket is set to the outside of the balloon, which is protected into a predetermined intravenous.

[0020] The adjacent normal venous segment bracket 1 of the present embodiment is an absorbing faster material, preferably a magnesium alloy. The lesion bracket 2 of the present embodiment is a polylactic acid polymer materi...

Embodiment 2

[0022] like figure 2 As shown, the difference between the present embodiment and the embodiment is that the bracket of the present embodiment has three sections, the intermediate segment is the lesion bracket 2, and each of the two sections of the neighboring normal venometric bracket 1 are adjacent. The rest are identical to the examples.

[0023] When the present invention is in use, it is arranged outside the balloon, and is delivered to the venous lesion with the balloon, and the balloon is placed in the bracket. Adjacent normal venous brackets 1 absorbs faster, first absorbed; the lesion bracket 2 is slow, and the neighboring normal venous segment bracket 1 absorbs the lesion bracket 2 to be absorbed, which can both support the venous disease section Time, reducing the effects of adjacent normal veins, and avoiding the non-absorbable metal brackets for long-term local veins, resulting in complications such as venous thrombosis, venous renewal and other complications.

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Abstract

The invention relates to medical instruments, and particularly relates to a balloon expansion type absorbable vein stent. The stent is of a cylindrical net structure and is divided into a lesion section stent body supported at the vein occlusion or stenosis position and an adjacent normal vein section stent body supported at the adjacent position of the lesion section stent body. The mesh diameter of the adjacent normal vein section stent body is larger than or equal to that of the lesion section stent body. The stent is made of absorbable materials. The absorption time of the lesion section stent body is longer than that of the adjacent normal vein section stent body. A balloon is sleeved with the stent, and the stent is supported and placed into the vein through expansion of the balloon. The stent is placed in the vein through expansion of the balloon, and is accurate in positioning, good in wall attaching performance and small in thrombosis probability. The stent can be completely absorbed, the part supporting the normal vein section is fast absorbed, the influence on the vein is small, the lesion section is slow in absorption, and supporting force is good.

Description

Technical field [0001] The present invention relates to a medical device, and is specifically a balloon expandable absorbable venous bracket. Background technique [0002] The scaffold implant is a minimally invasive treatment method for intravenous or occlude preferences caused by intravenous stenosis or occlusion of syndrome after intravenous pressure syndrome or intravenous thrombosis. However, it is currently a metal non-absorbable bracket in clinical practice. This metal non-absorbable bracket remains in intravenous thrombosis, intravenous occlusion, etc. Inventive content [0003] In order to solve the above problems existing in the clinical existing venous bracket, it is an object of the present invention to provide a balloon expandable absorbable venous bracket. [0004] The object of the present invention is to be implemented by the following technical solutions: [0005] The stent of the present invention is a cylindrical mesh structure, which is divided into a ventric...

Claims

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Application Information

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IPC IPC(8): A61F2/06A61F2/958
CPCA61F2/06A61F2/958A61F2210/0004
Inventor 周玉斌吴丹明周依宁
Owner 周玉斌
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