Thrombus filter

A filter and thrombus technology, which is applied in the field of medical devices, can solve problems such as easy tearing of the endothelium, poor self-centering ability, and easy displacement of devices, so as to achieve simple and convenient release and recovery operations, enhance self-centering functions, and reduce surgery The effect of operating time

Active Publication Date: 2016-03-02
GUANGDONG PULSE MEDICAL SCI & TECH CO LTD
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Problems solved by technology

[0004] Current thrombus filters have numerous limitations; such as figure 1 , figure 2 As shown, the limitation of the conical thrombus filter is that when the device is implanted in the inferior vena cava, due to the poor self-centering ability of the conical device, the device is easy to tilt after being implanted in the inferior vena cava. After the device is tilted, the recovery head is tight. Adhere to the vessel wall; during the recovery process, the recovery device cannot successfully capture the recovery head, which will increase the operation time of the device recovery operation, and even lead to the failure of the device recovery operation; and the single-layer conical shape of the device determines this type of de

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Embodiment Construction

[0038] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0039] Such as Figure 5 , Figure 6 As shown, a thrombus filter includes a filter disc 1 , a central rod 3 and an elastic support frame 2 . The thrombus filter can be made of materials with shape memory function commonly used in this industry. The specific material is not limited in the present invention, as long as it is suitable for the human body and has shape memory function; in this embodiment, the thrombus filter uses Made of nickel-titanium alloy, specifically a hollow nickel-titanium tube. After the hollow nickel-titanium tube raw material is laser-engraved, it is stretched by a mold, and then heat-treated to obtain a thrombus filter. The filter disc 1 is a shrinkable structure. The filter disc 1 is connected to the end of the central rod 3, the elastic support frame 2 is connected to the upper ...

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Abstract

The invention discloses a thrombus filter, which comprises a filter tray, an elastic supporting frame and a central rod, wherein the filter tray is of a contractible structure; the filter tray is connected to the tail end of the central rod; the elastic supporting frame is connected to the upper end of the central rod; and a recovery end is arranged at the top end of the central rod. The thrombus filter disclosed by the invention is stably fixed in inferior vena cava, and is simple in recovery operation, strong in self-centered capacity, not easy for inclination and good in thrombus filtering effect.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a thrombus filter. Background technique [0002] Pulmonary embolism (referred to as Pulmonary Embolism, PE) is a series of clinical pathophysiological changes mainly caused by pulmonary circulation dysfunction caused by peripheral deep venous thrombosis or thrombus in the right heart chamber falling off into the pulmonary circulation, blocking the pulmonary artery or its branches, and causing severe can cause sudden death. Studies have shown that the emboli that cause PE mainly come from the deep veins of limbs or pelvic veins, accounting for 60%-90% of the sources of emboli. Therefore, a thrombus filter can be placed below the level of the opening of the renal vein, that is, the inferior vena cava, to intercept free emboli in the blood, which can effectively prevent the occurrence of pulmonary embolism PE. At present, this technology is being continuously applied in clinical ...

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Application Information

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IPC IPC(8): A61F2/01
CPCA61F2/01A61F2220/00A61F2310/00023A61F2310/00071
Inventor 林伟然
Owner GUANGDONG PULSE MEDICAL SCI & TECH CO LTD
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