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Self-expanding stent suitable for intracranial venous sinus and delivery system thereof

A transmission system and vein technology, applied in the field of vascular stents, can solve the problems of unsuitable venous sinuses and blood vessels, and achieve the effects of small size, improved radial support force, and improved flexibility

Pending Publication Date: 2021-02-12
BEIJING TIANTAN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing arterial stents are not suitable for sinus vessels

Method used

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  • Self-expanding stent suitable for intracranial venous sinus and delivery system thereof
  • Self-expanding stent suitable for intracranial venous sinus and delivery system thereof
  • Self-expanding stent suitable for intracranial venous sinus and delivery system thereof

Examples

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Embodiment

[0032] Example: refer to figure 1 , the present invention provides a self-expanding stent suitable for intracranial venous sinus, comprising several tubular components 100, each tubular component 100 has a front open end 110 and a rear open end 120, and has a first diameter for insertion into a blood vessel and a second diameter for deployment within a blood vessel; the first diameter is smaller than the second diameter, and the length of the tubular assembly 100 at the first diameter is greater than the length of the tubular assembly 100 at the second diameter. The tubular components 100 are connected by wires. Since the sinus lumen has a triangular cross-section, designing the tubular component 100 as an uninterrupted open-loop structure can increase the flexibility of the pre-installed stent during placement, and the adhering property of the stent will be better after the stent is released. Of course, under the condition that the flexibility of the tubular component 100 is...

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Abstract

The invention relates to the technical field of intravascular stents, in particular to a self-expanding stent suitable for intracranial venous sinus, which comprises a plurality of tubular components,each tubular component is provided with a front opening end and a rear opening end, and has a first diameter for being inserted into a blood vessel and a second diameter for being expanded in the blood vessel; the tubular assembly comprises a plurality of annular supporting parts which are coaxially arranged and connecting parts used for connecting every two adjacent supporting parts; supportingparts are of a corrugated structure defined by metal wires. the wave crests and the wave troughs on the adjacent sides of the two supporting parts are oppositely arranged, and the connecting part is used for connecting the wave crests and the wave troughs on the adjacent sides of the two supporting parts to form a hollow part; and the unit area of the hollow part is 5.6-7.4 mm<2>. Due to the factthat the wave crests and the wave troughs on the adjacent sides of the two supporting parts are connected through the connecting parts to form the hollow part, the proper radial supporting force of the stent and the flexibility of the stent can be improved. The unit area of the hollow part is 5.6-7.4 mm<2>, so that the size of particles passing through the stent can be smaller.

Description

technical field [0001] The invention relates to the technical field of vascular stents, in particular to a self-expandable stent suitable for intracranial venous sinuses and a delivery system thereof. Background technique [0002] Stent implantation refers to a technology that uses techniques such as puncture, catheter, balloon catheter expansion and metal stent placement to expand and recanalize narrowed or occluded blood vessels or lumens, and solve traditional surgical blind spots. Stenosis and occlusion of blood vessels and lumens are the treatment strengths of interventional stent implantation technology. It has the advantages of small trauma, high curative effect, low risk, few complications, and short hospital stay, creating a new way for narrowing and occlusion of blood vessels and lumens. [0003] Existing stents are designed based on arterial vessels, while there are few stents for intracranial venous sinus vessels. Because the wall of the venous sinus is thin an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/915A61F2/966A61F2/97
CPCA61F2/915A61F2/966A61F2/97A61F2002/91575A61F2210/0061A61F2250/0098
Inventor 莫大鹏江裕华缪中荣
Owner BEIJING TIANTAN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
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