Two-way controlled release 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, good self-centering performance, and improving controllability

Active Publication Date: 2020-11-06
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 problem that the filter in the prior art cannot realize two-way controllable release, the inclination of the filter causes the recovery hook to stick to the wall and is not easy to be captured and recovered out of the body, and the filter is not easy to recover after the intima of the blood vessel is covered.

Method used

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  • Two-way controlled release vena cava filter
  • Two-way controlled release vena cava filter
  • Two-way controlled release 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 located on opposite sides of the filter part 1400, the function of the filter part 1400 is to filter thrombus, the first support part 1200 and the second support part 1100 The function of the suppor...

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 that: the first support rod 1200a of the first support part 1200 diverges from the terminal cross-linking 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 thorns 1500 at the ends of each second support rod 1100a from being kinked.

[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 The filtering part 1400 is integrally formed to form a two-layer filtering 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 integrally formed, the second support part 1100 is an independent component, and the second supp...

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PUM

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Abstract

The invention discloses a two-way controllable release vena cava filter, comprising a filter part and a support part, the filter part is a grid structure formed by cross-linking a plurality of struts, and the support part is included on both sides of the filter part The first support part and the second support part with the opposite opening on the side; the first support part is formed by extending outward from the center forward and gradually reversed and curled; the second support part is gradually extended from the center forward formed by extension. The invention provides a two-way controllable release vena cava filter that can be implanted and recovered through both the femoral vein and the jugular vein, has good thrombus filtering effect, can be implanted for a longer period of time and is easier to be captured and recovered.

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. When in use, the filter is generally 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 implant the filter ...

Claims

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Application Information

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Patent Type & Authority Patents(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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