Implantation type thrombus filter

An implantable, embolic filter technology, applied in the direction of the filter in the blood vessel, can solve problems such as shedding, hardened plaque thrombus, blood vessel embolism, etc., to ensure accurate positioning, prevent serious complications, and prevent displacement.

Inactive Publication Date: 2004-10-06
周星 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] During endoluminal angioplasty or thrombolysis, atherosclerotic plaque or thrombus in blood vessels may fall off, resulting in embolism of blood vessels supplying vital organs or tissues, resultin

Method used

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  • Implantation type thrombus filter
  • Implantation type thrombus filter
  • Implantation type thrombus filter

Examples

Experimental program
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Example Embodiment

[0025] Use the NiTi shape memory alloy wire with a recovery temperature of 33 and a diameter of 0.35mm to weave the network pipe in the mold, and then carry out heat treatment in the mold to make it have a designed geometric shape above the recovery temperature, such as single horn shape and double horn shape , Cylindrical, as memory alloy smart element 2. Use the NiTi shape memory alloy wire with a recovery temperature of 33°C and a diameter of 0.08mm to weave the mesh in the mold, so that the maximum radial size of the pores of the woven mesh is between 0.3 and 0.8mm, and then perform heat treatment in the mold to make It has a designed geometric shape above the recovery temperature, such as a funnel shape; or a custom-made funnel-shaped polytetrafluoroethylene or polyester fiber mesh is used as the filter mesh 1 . The funnel-shaped opening of the filter screen 1 and the memory alloy smart element 2 are sewn together with the connector 3 to obtain the thrombus filter of the ...

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Abstract

A novel implanted thrombus filter includes filter net, intelligent element and connecting component. The intelligent element is made up by adopting shape memory alloy, and so it can automatically spread out the filter net and make its edge tightly fits the vascular wall, so that it not only can effectively prevent the atheromatous sclerosal plaque fallen from vascular pathologic changed portion or thrombus from coming into important tissue or organ of human body, and can regularly recover the atheromatous sclerosal plaque or thrombus attached to the filter so as to obtain the action of cleaning blood. Its operation is simple, use is convenient and its therapeutic effect is reliable.

Description

technical field [0001] The invention relates to a filter, especially an implantable blood vessel filter. Background technique [0002] During endovascular angioplasty or thrombolysis, atherosclerotic plaque or thrombus in blood vessels may fall off, leading to embolism of blood vessels supplying important organs or tissues, resulting in serious complications. At present, except for the production and clinical application of inferior vena cava filters abroad, there is no ideal vascular filter production or application for peripheral blood vessels. Contents of the invention [0003] The purpose of the present invention is to provide an implantable blood vessel filter, which can not only effectively prevent the atherosclerotic plaque or thrombus that falls off from the vascular lesion part from entering the important tissues or organs of the human body while ensuring blood perfusion, but also The atherosclerotic plaque or thrombus adhering to the filter can be recovered regu...

Claims

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Application Information

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IPC IPC(8): A61F2/01
Inventor 周星王晓白
Owner 周星
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