intravascular filter

A blood vessel and filter technology, which is applied in the field of intravascular filters, can solve the problems of easy decoupling, difficulty in removing and recycling the filter, and long time, so as to reduce the difficulty of recycling, increase the success rate of recycling, and slow down the effect of endothelialization

Active Publication Date: 2021-10-01
张韬 +3
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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 long time, and the filter is covered by the new blood vessel endothelium due to the proliferation or adhesion of the vascular endothelium. Overwhelming and difficult to remove and recycle

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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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Abstract

An intravascular filter, comprising: a plurality of first connecting rods converged at one end to form a first filter mesh with a cage-like structure; several second connecting rods converged at the opposite end to form a second filter mesh with a cage-like structure; The support rods are respectively connected to the non-converging ends of the first connecting rod and the second connecting rod; wherein, the cross-sections of the several supporting rods are designed in a blade shape so as to cut the neovascular intima when the intravascular filter is recovered. The support rod of the intravascular filter of the present invention is in the shape of a blade, which can cut the neointima on the inner wall of the blood vessel during recovery, avoid direct tearing damage to the blood vessel wall, and greatly reduce the failure rate of recovery; at the same time, the width of the support rod is smaller than the wall thickness , while ensuring the support force, minimize the contact area between the filter and the inner wall of the blood vessel, thereby slowing down endothelialization and alleviating intimal hyperplasia; the recovery hooks arranged in two directions in the present invention can also increase the success rate of recovery.

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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Patent Type & Authority Patents(China)
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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