Intravascular filter

A blood vessel and filter technology, applied in the field of intravascular filters, can solve the problems of long time, difficult to remove and recycle the filter, easy decoupling, etc., and achieve the effects of slowing endothelialization, reducing the difficulty of recycling, and reducing the contact area.

Active Publication Date: 2019-07-09
张韬 +3
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its simple structure, this temporary filter is not fixed on the blood vessel wall, so it is easy to decouple and swim in the blood vessel, or it is placed in the blood vessel for a

Method used

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0022] The intravascular filter of the present invention is a medical device that can enter the lumen of a blood vessel by means of intervention, and can capture certain parts of the patient after expansion, such as thrombus in blood vessels of the lower extremities, so as to prevent larger clumps in the blood from blocking the capillaries. Cause organ ischemia and damage.

[0023] Specifically, the intravascular filter of the present invention includes:

[0024] A plurality of first connecting rods converge at one end to form a cage-like first filter screen;

[0025] A number of second connecting rods converge at the opposite end to form a second filter screen with a cage-like structure;

[0026] a plurality of support...

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PUM

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Abstract

An intravascular filter comprises a plurality of first connecting rods, a plurality of second connecting rods and a plurality of support rods. The first connecting rods are gathered at one end to forma first filter screen of a cage structure. The second connecting rods are gathered at the other end to form a second filter screen of a cage structure. The support rods are connected with the non-gathering ends of the first connecting rods and the second connecting rods respectively. The cross section of each support rod is designed in the shape of a blade, so that neovascular intimae can be cutduring recovery of the intravascular filter. The intravascular filter has the advantages that the support rods are blade-shaped, and the intravascular filter can cut the neovascular intimae on the inner walls of blood vessels during recovery, so that direct tearing damage to the vascular walls is avoided, and the recovery failure rate is greatly decreased; the width of each support rod is smallerthan the thickness of the vascular wall, and the contact areas between the filter and the inner walls of the blood vessels are reduced to the greatest extent while the supporting force is ensured, sothat endothelialization is slowed down, and intimal hyperplasia is relieved; through bidirectionally-arranged recovery hooks, the recovery success rate can be increased.

Description

technical field [0001] The invention relates to a blood vessel treatment device, in particular to an intravascular filter. Background technique [0002] Thrombosis is a relatively serious disease of middle-aged and elderly people. One of the causes is that the patient's blood is too thick. Due to tumor thrombi, inflammatory tissue blocks and other vegetations, the formation of intravascular emboli will flow to the narrow position with the blood after falling off. The consequences of blood vessel blockage will be very serious. Among the existing treatment methods, one is to implant a filter in the blood vessel, also known as an intravascular filter, through which the larger blood clots are intercepted and prevented from being damaged in the brain, important organs, etc. Block blood vessels in the capillaries to avoid damage to the patient's organs due to hypoxia. There are also temporary filters implanted in the blood vessels. If a large amount of blood transfusion is requi...

Claims

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Application Information

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IPC IPC(8): A61F2/01A61L31/08A61L31/16
CPCA61F2/01A61L31/08A61L31/16A61L2300/41A61L2300/416
Inventor 张韬张学民杨青林董世敏
Owner 张韬
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