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Filter and method of making the same

A manufacturing method and filter technology, applied in the direction of the filter in the blood vessel, etc., can solve the problems such as easy climbing of the endothelium, inconvenient removal of the filter, etc., and achieve the effect of avoiding the formation of thrombus

Active Publication Date: 2018-05-11
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a filter and its manufacturing method to solve the defect of the prior art that when the filter is implanted into a blood vessel, the endothelium tends to climb onto the support body, making it inconvenient to take out the filter

Method used

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  • Filter and method of making the same
  • Filter and method of making the same
  • Filter and method of making the same

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Embodiment Construction

[0052] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the filter of the present invention and its manufacturing method will now be described in detail with reference to the accompanying drawings.

[0053] Please also refer to Figure 1a to Figure 6 , The filter provided by an embodiment of the present invention includes a first end portion 1 and a plurality of support bodies 3 radiating from the first end portion 1 in the same direction. Among them, such as Figure 1bAs shown, each support body 3 includes a lead-out segment 31 radiating from the first end 1, and a radial support segment 32 connected to the lead-out segment 31 and extending in the axial direction; each lead-out segment 31 includes a guide segment 311 and the first branch section 312; one end of each guide section 311 is connected with the first end 1, and the other end is respectively connected with two first branch sections 312, and the two f...

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Abstract

The filter of the present invention includes a first end and a plurality of supports radiating from the first end in the same direction, and is characterized in that at least a part of each support is covered with a wing-shaped film, so The width of the thin film body is larger than the width of the covered part of the support body, and the thin film bodies on two adjacent support bodies are separated from each other. The width of the filter provided by the present invention is greater than the width of the part of the covered support body, so that when the filter is placed in the lumen, the film body can float under the washing of the blood flow, reducing the crawling of the endothelium, and the film body can also Prevent the tissues on both sides of the support body from combining with each other to cover the support body, so that the filter can be easily taken out.

Description

technical field [0001] The invention relates to a medical device and a preparation method thereof, in particular to a filter and a preparation method thereof. Background technique [0002] Pulmonary embolism (PE) is a common disease with a high mortality rate. According to statistics, the mortality rate of untreated pulmonary embolism is 20%-30%, and the annual new cases account for about 0.2% of the population. With a population of 1.35 billion in my country, there are about 2.7 million new patients every year. [0003] The vena cava filter (hereinafter referred to as the filter) has been clinically proven to reduce the incidence of pulmonary embolism. If the filter is permanently implanted, it will bring the following risks: the filter will be in contact with blood and vascular endothelium for a long time, protein adsorption and platelet adhesion may occur, and eventually thrombus will form to block the venous blood vessels, or lead to recurrence of pulmonary embolism; lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/01
Inventor 陈卓戚祖强张贵
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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