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Two-way controllable releasable vena cava filter

A vena cava and filter technology, applied in the field of medical devices, can solve the problem that the filter cannot achieve two-way controllable release, and achieve the effect of expanding the treatment time window, preventing tilting, and good self-centering performance

Active Publication Date: 2017-11-03
HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problems in the prior art that the filter cannot realize two-way controllable release, the inclination of the filter makes it difficult for the recovery hook to be caught and recovered out of the body due to the inclination of the filter, and the problem that the device is difficult to recover after the intima of the blood vessel is crawled

Method used

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  • Two-way controllable releasable vena cava filter
  • Two-way controllable releasable vena cava filter
  • Two-way controllable releasable vena cava filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1, such as Figure 1-5 As shown, a two-way controllable release vena cava filter includes a filter part 1400 and a support part. The filter part 1400 is a grid structure formed by cross-linking a plurality of struts 1400a. The support part is included in the filter The first support part 1200 and the second support part 1100 with opposite openings provided on both sides of the part 1400; the first support part 1200 is formed by extending outward gradually from the center in the positive direction and gradually reversed and curled; the second support part 1100 is formed by gradually extending outward from the center.

[0047] The filter of the present invention includes at least three parts: a filter part 1400, a first support part 1200 and a second support part 1100 respectively extending forward and reverse on both sides of the filter part 1400, the function of the filter part 1400 is to filter thrombus, the first support The function of the part 1200 and the ...

Embodiment 2

[0062] Example 2, such as Image 6 , 7 As shown, this embodiment is improved on the basis of Embodiment 1. The difference from Embodiment 1 is: the first support rod 1200a of the first support part 1200 branches out from the end cross-link node 1402 and two first support rods 1200a converge again and then turn over.

[0063] An anchor thorn 1500 is provided at the end of the second support rod 1100a. The shape of the second support rod 1100a is a straight rod, which prevents the anchor bar 1500 at the end of the second support rod 1100a from kink.

[0064] The rest of the structure is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0065] Example 3, such as Figure 8-11 As shown, in this embodiment, the first support part 1200, the second support part 1100 and the filter part 1400 are split assembly structures; one of the first support part 1200 or the second support part 1100 is an independent component, and the other is It is integrated with the filter part 1400 to form a two-layer filter structure. After being shaped separately, they are welded together. The first support part 1200 of the independent structure is composed of a plurality of first support rods 1200a that extend from the center to the outside and then reversed and rolled up step by step; the second support part 1100 of the independent structure is formed from the center to the outside It consists of a plurality of extended second support rods 1100a. Such as Figure 8 , 9 As shown, the first support part 1200 and the filter part 1400 are integrated, the second support part 1100 is an independent component, and the second support part ...

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Abstract

The invention discloses a two-way controllable releasable vena cava filter. The filter comprises a filtering part and a supporting part, the filtering part is of a grid structure which is formed in the mode that a plurality of supporting rods are cross-linked with each other, and the supporting part comprises a first supporting part and a second supporting part which are arranged on two sides of the filtering part, wherein the opening of the first supporting part is opposite to that of the second supporting part; the first supporting part gradually extends from the center to the outside in the forward direction and gradually overturns and curls in the reverse direction; the second supporting part gradually extends from the center to the outside in the forward direction. According to the two-way controllable releasable vena cava filter, implantation and recycling of the filter can be conducted through the femoral vein and the jugular vein, the thrombus filtering effect is good, the filter can be recycled after being implanted for a long time, and the filter can be more easily captured and recycled.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to a filter, in particular to a two-way controllable release vena cava filter. Background technique [0002] Pulmonary embolism (PE) is a common health problem and an important cause of death in all age groups. Most pulmonary embolisms are caused by deep vein thrombosis (DVT) in the lower extremities or in the pelvis, in which blood clots can migrate through the veins back to the heart and into the lungs, losing blood and oxygen to part of the lungs supply leading to pulmonary infarction. [0003] In the current treatment plan, when anticoagulation is contraindicated or ineffective, the use of filters can prevent and reduce the occurrence of pulmonary embolism. The filter is usually delivered from the femoral vein to the inferior vena cava, but when there is floating thrombus in the double iliac vein or inferior vena cava, it is necessary to insert the filter into the inferio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/01
CPCA61F2002/016A61F2230/0002A61F2/012A61F2230/005
Inventor 张庭超李阳
Owner HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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