Filter and making method thereof

A manufacturing method and filter technology, applied in the direction of the filter in blood vessels, can solve the problems of endothelium easy to climb and inconvenient filter removal, and achieve the effect of avoiding the formation of thrombus

Active Publication Date: 2016-07-27
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 making method thereof
  • Filter and making method thereof
  • Filter and making method thereof

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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 invention discloses a filter, which comprises a first end and a plurality of supporting bodies which radiate from the first end towards the same direction; the filter is characterized in that a wing-shaped thin film body covers at least part of each of the supporting bodies; the thin film bodies are wider than the covered parts of the supporting bodies; and the thin film bodies on the two adjacent supporting bodies are mutually spaced. When the filter disclosed by the invention is kept in a lumen, the thin film bodies can float under the flushing action of a blood flow since the filter is wider than the covered parts of the supporting bodies, so that the coverage of endothelia can be relieved; and in addition, by virtue of the thin film bodies, tissues on two sides of the supporting bodies are prevented from covering the supporting bodies when the tissues get mutually bonded, so that the filter can be taken out conveniently.

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 Applications(China)
IPC IPC(8): A61F2/01
Inventor 陈卓戚祖强张贵
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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