Novel recoverable type vena cava filter

A cavity and a new type of technology, applied in the field of medical supplies, can solve the problems of not enhancing the filtering effect of thrombus, increasing the complexity of the vena cava filter structure, and easy tilting of the vena cava filter, so as to improve the filtering effect, ensure stability, and facilitate recycling Effect

Pending Publication Date: 2018-08-17
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention patent application with the application number 201610277846.9 discloses a vena cava filter, which mainly solves the problem that the vena cava filter is easy to tilt after being inserted into the blood vessel. They are all set to point contact, which increases the stability of the fixation. However, since the length of the upper pillar is shorter than that of the lower pillar, a

Method used

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  • Novel recoverable type vena cava filter
  • Novel recoverable type vena cava filter

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1As shown, on the basis of the above solution, there are three first support columns and three second support columns, and each first support column is located between two adjacent second support columns. The inclination angle of the first connecting column 3 and the second connecting column 5 is 30 degrees; the inclination angle of the first positioning column 4 and the second positioning column 6 is 5 degrees; the inclination angle of the filter column 8 is 20 degrees Spend. The filtering rate of the thrombus in the vena cava filter in the prior art is about 85%, and the filtering rate of the thrombus in this embodiment is about 92% through clinical tests.

Embodiment 2

[0031] Such as figure 2 As shown, there are 2 first supporting columns, 4 second supporting columns, and the inclination angle of the first connecting column 3 and the second connecting column 5 is 45 degrees; the first positioning column 4 and the second positioning column The inclination angle of the two positioning columns 6 is 30 degrees; the inclination angle of the filter column 8 is 35 degrees. The filtering rate of the thrombus in the vena cava filter in the prior art is about 85%, and the filtering rate of the thrombus in this embodiment is about 90% through clinical tests.

Embodiment 3

[0033] There are three first support columns and three second support columns, and each first support column is located between two adjacent second support columns. The inclination angle of the first connecting column 3 and the second connecting column 5 is 60 degrees, the inclination angle of the first positioning column 4 and the second positioning column 6 is 45 degrees, and the inclination angle of the filter column 8 is 50 degrees. Spend. The filtering rate of the thrombus in the vena cava filter in the prior art is about 85%, and the filtering rate of the thrombus in this embodiment is about 92% through clinical tests.

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Abstract

The invention discloses a novel recoverable type vena cava filter. The novel recoverable type vena cava filter comprises a recovery column, a first support column and a second support column, the first support column comprises a first connecting column and a first locating column, the second support column comprises a second connecting column and a second locating column, the upper ends of the first connecting column and the second connecting column are connected with the recovery column, the upper end of the first locating column is connected with the lower end of the first connecting column,the upper end of the second locating column is connected with the lower end of the second connecting column, and locating hooks are arranged at the lower ends of the first locating column and the second locating column; a filter column is arranged between the two adjacent support columns, the upper end of the filter column is connected with the recovery column, and two filter wires are arranged at the lower end of the filter column. When the novel recoverable type vena cava filter is used, the hooks on the first locating column and the second column are penetrated into the vessel wall, dual locating is achieved, the stability of the vena cava filter is guaranteed, the phenomenon that the vena cava filter inclines under the impact of gravity or blood is prevented, and convenience is brought to recycling. In addition, the filter can perform dual filtering on the blood, and the filter effect on thrombus is improved.

Description

technical field [0001] The invention relates to the field of medical supplies, in particular to a novel recyclable vena cava filter. Background technique [0002] Deep Vein Thrombosis (DVT) refers to abnormal coagulation of blood in deep veins due to vessel wall damage, blood stasis, blood hypercoagulability, etc. Embolism (Pulmonary embolism, PE). For this kind of problem, the inferior vena cava filter (InferiorVenacavaFilter, IVCF) is usually placed percutaneously, which can effectively prevent fatal PE and is widely used in clinical practice. IVCF captures large clots that can cause blockage of the main pulmonary artery. Through blood washing and percutaneous catheter thrombus aspiration, catheter thrombolysis dissolves or converts large blood clots into small blood clots, and finally distributes in the pulmonary artery The small branches can minimize the impact of thrombus on the pulmonary circulation. [0003] There are three types of vena cava filters currently on t...

Claims

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Application Information

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IPC IPC(8): A61F2/01
CPCA61F2/01A61F2002/018A61F2/011
Inventor 冯海全苏娟甘世明陈思源王永刚曹苹
Owner INNER MONGOLIA UNIV OF TECH
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