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Easy-to-recycle safety temporary vena caval filter

A vena cava and filter technology, applied in the medical field, can solve the problems of conversion failure, filter displacement and breakage, and inability to use the superior vena cava, and achieve the effect of simple and easy removal and not easy to break

Inactive Publication Date: 2017-11-24
THE SECOND AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problem existing in the prior art is that the filters currently used clinically have many deficiencies, and there is no easy and safe vena cava filter to remove
Long-term indwelling of the permanent filter in the human body is likely to induce thrombosis recurrence, filter displacement, puncture into adjacent organs or tissues (resulting in massive gastrointestinal bleeding, abdominal aortic inferior vena cava fistula, long-term low back pain), inferior vena cava obstruction, etc. Complications; Most of the recyclable filters have a short recyclable window, and the filter is firmly adhered to the vein wall, which leads to the failure of the filter recovery; although the conversion filter can be converted into a stent structure, there is a possibility of conversion failure, and foreign objects are left in the body ;Currently clinically available temporary filters have not been certified by the US FDA and cannot be used for the superior vena cava, and the filters are extremely easy to shift and break

Method used

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  • Easy-to-recycle safety temporary vena caval filter

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Embodiment Construction

[0014] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.

[0015] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the easy-to-recovery and safe temporary vena cava filter includes: a recovery guide wire 1, a filter screen 2, and an olive body 3 for fixing the guide wire.

[0017] The recovery guide wire 1 is fixedly connected to the filter screen and is made of polylactide, which is convenient for the filter screen to be taken out;

[0018] The filter screen 2 has a diamond-shaped structure, and the surroundings of the filter screen are very smooth to prevent damage to blood vessels. It is made of nickel-titanium alloy material, has a long recovery period, and is not suitable for breaking; the diameter of the f...

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PUM

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Abstract

The invention belongs to the technical field of medical treatment and discloses an easy-to-recycle safety temporary vena caval filter, comprising a recycling guide wire, a filter mesh and a fixing olivary part; the recycling guide wire is fixedly connected with the filter mesh and is made from polylactide; the filter mesh is of diamond structure, and two ends of the filter mesh are very smooth; the filter mesh is at least 3.2 cm in diameter; the lower end of the recycling guide wire is connected with the fixing olivary part for fixing the guide wire. The easy-to-recycle safety temporary vena caval filter can be removed completely and is simple and easy to remove; the filter mesh never adheres to the venous wall, and the venous wall is rarely damaged during recycling; the easy-to-recycle safety temporary vena caval filter can be placed in a human body for at least 3 months, and the recycling window phase is long; the easy-to-recycle safety temporary vena caval filter never shifts towards to the heart; the easy-to-recycle safety temporary vena caval filter is safely applicable to use in superior vena cava and inferior vena cava; the easy-to-recycle safety temporary vena caval filter never enters a branch vein, is rarely broken, and can be removed with no need for operation under ray.

Description

technical field [0001] The invention belongs to the field of medical technology, in particular to an easy-to-recycle and safe temporary vena cava filter. Background technique [0002] Patients with venous thrombosis are prone to fatal pulmonary embolism. Placing a filter in the vena cava is currently the only effective means of preventing fatal pulmonary embolism. Safe vena cava filter. Long-term indwelling of the permanent filter in the human body is likely to induce thrombosis recurrence, filter displacement, puncture into adjacent organs or tissues (resulting in massive gastrointestinal bleeding, abdominal aortic inferior vena cava fistula, long-term low back pain), inferior vena cava obstruction, etc. Complications; Most of the recyclable filters have a short recyclable window, and the filter is firmly adhered to the vein wall, which leads to the failure of the filter recovery; although the conversion filter can be converted into a stent structure, there is a possibilit...

Claims

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Application Information

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IPC IPC(8): A61F2/01
CPCA61F2/01A61F2/011A61F2002/016
Inventor 陈以宽江雪梅凌思英孙建明唐博腾勇魏巍喻武徐博
Owner THE SECOND AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIV
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