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Venous type bracket partly covered by film

A membrane and vein technology, applied in stents, blood vessels, devices of human tubular structures, etc., can solve problems such as large size, achieve low shortening rate, good bending performance in all directions, and correct stenotic occlusive lesions.

Inactive Publication Date: 2016-12-07
上海唯域医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the V-shaped wave and connecting rods of this stent is relatively large, so although the bending performance is improved, it is only to a certain extent; and the nodes of the small V-shaped structure are fixed. Pulsation, the joint binding material is subjected to continuous alternating stress, and there is a greater risk of fracture

Method used

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  • Venous type bracket partly covered by film
  • Venous type bracket partly covered by film
  • Venous type bracket partly covered by film

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Experimental program
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Embodiment Construction

[0031] Referring now to the accompanying drawings, the present invention will be further described.

[0032] Such as figure 1 As shown, a partially covered venous stent includes a bare section 1 , a main body section 2 , and a covered membrane 3 . Both the bare section 1 and the main section 2 are woven with memory alloy monofilaments 4 intersecting and continuous to form a symmetrical prismatic multi-row mesh tube. The covering film 3 is all located in the main body section 2, and the bare section 1 has no covering film 3. The covering film 3 is made of one of polytetrafluoroethylene, polyester, and polyamide, and is fixed on the main body section 2 by sewing, heat pressing, or cross-linking. The braided monofilaments 4 used in the bare section 1 and the main body section 2 can be the same one or multiple different ones. The length of the bare segment 1 is 3 to 5 cm.

[0033] Such as figure 2 As shown, the symmetrical prismatic grids of the bare segment 1 and the main s...

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Abstract

The invention provides a venous type bracket partly covered by a film. The venous type bracket comprises a naked section, a main body section and a covering film, wherein the naked section and the main body section are tube-shaped objects with a plurality of rows of symmetrical prismatic meshes formed by continuously weaving single memory alloy wires in a crossing manner, the whole covering film is positioned on the main body section, the naked section has no covering film, and the covering film is made of one of polytetrafluoroethylene, polyester and polyamide. The bracket can be used for effectively correcting the stenotic occlusive diseases and protecting the important branch arteries, can be used for the intravascular stent-assisted angioplasty treatment of iliofermoral vein and inferior caval vein stenotic occlusive diseases, and also can be applied to patients suffering from artery stenotic occlusive diseases.

Description

technical field [0001] The invention relates to an interventional treatment device, which belongs to the subject fields of vascular surgery, intracavitary vascular surgery, interventional radiology and the like, and is used for percutaneous puncture and intracavitary treatment of iliofemoral vein thromboembolic diseases. Background technique [0002] Existing treatment methods for the removal of deep venous thrombosis mainly include phlebotomy and thrombectomy, catheter contact thrombolysis, and mechanical embolectomy. More than 80% of patients require iliofemoral stenting after thrombus removal. Currently commonly used venous stents are generally bare stents, such as Wallstent and the like. However, because the thrombus in the iliofemoral vein is often not completely removed, the residual thrombus after the implanted venous stent overflows from the mesh of the stent to cause partial occlusion of the iliofemoral vein again. This is an important reason for the recurrence of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/07A61F2/90
CPCA61F2/07A61F2/90
Inventor 叶开创陆信武黎洁张忠民
Owner 上海唯域医疗科技有限公司
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