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Filters with flexible connections

A technology of flexible connections and flexible connectors, which is applied in the field of medical devices, can solve the problems of short recovery time window, device fatigue fracture, and endothelial crawling, etc., so as to achieve the advantages of not easy fatigue fracture, easy recovery and long recovery time Effect

Active Publication Date: 2022-04-15
HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that, according to the prior art, rigid connecting rods are used to connect the struts, so that the device has a strong radial support force, and it is easy to cause endothelial crawling, resulting in a short recovery time window or difficult recovery of the device. At the same time, it is also easy to cause fatigue fracture of the device, providing a filter with flexible connection that improves the filtering effect and does not increase the radial support force

Method used

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  • Filters with flexible connections
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Examples

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Embodiment 1

[0046] Example 1, such as Figure 1-15 As shown, a filter with a flexible connection is composed of a plurality of rods 1000; this embodiment is a filter with a rod structure. A flexible connecting piece 2000 is provided between the struts 1000, and the flexible connecting piece 2000 is used for connecting between the struts 1000, and cooperates with the struts 1000 to form a network structure. The specific structure of the flexible connector 2000 is not limited, and can be any shape that forms a network structure with the strut 1000 . The flexible connecting piece 2000 refers to a connecting piece made of a material that can deform itself, and the connecting piece does not generate too strong rigid support force for the pole 1000 connected thereto. The flexible connector 2000 can be a variety of materials and structures such as pipes, rods, wires, wires, etc., preferably polymer materials and metal wires, such as PTFE wire tape, PTFE-coated wire tape, stainless steel wire, n...

Embodiment 2

[0059] Example 2, such as Figure 16-21 As shown, a filter with flexible connections is composed of a plurality of rods 1000; this embodiment is a filter with a cage structure. In the cage-type filter, the struts 1000 are radially arranged to form a closed-loop structure.

[0060] Such as Figure 16-18 Shown is the first embodiment of the cage structure filter. The cage filter includes a plurality of poles 1000 arranged axially symmetrically. The ends of each pole 1000 converge to form a central gathering part 1001 at the top and a central gathering part 1002 at the bottom. The middle part of the poles 1000 expands outwards to form a cage structure. .

[0061] At the position where each strut 1000 is close to the central gathering part 1001 at the top, two connection points 3000 are arranged at intervals. Looking down at the filter in the axial direction, the connection points 3000 in all the struts 1000 are divided into two layers, that is, the same in the axial direction....

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Abstract

The invention discloses a filter with flexible connection, which is composed of a plurality of poles, and flexible connectors are arranged between the poles; the flexible connectors are connected with the poles, and cooperate with the poles to form cross grid. The invention provides a filter with flexible connection which improves the filtering effect without increasing the radial support force.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a filter, in particular to a filter with flexible connection. 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. In the prior art, a common cage-shaped vena cava filter has the disadvantage that the struts are connected horizontally by connecting pieces with a certain rigidity to improve the filtering effect. This type of filter usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/01
CPCA61F2/01A61F2002/016A61F2230/00
Inventor 张庭超李阳
Owner HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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