Sectional thrombus crushing and taking device

Abstract

The invention discloses a sectional thrombus crushing and taking device which comprises an inner core pipe, a pushing pipe, an elastic thrombus crushing mesh and an elastic collection mesh basket. The pushing pipe sleeves outside the inner core pipe, both the far end and a near end of the inner core pipe extend out of the pushing pipe, the inner core pipe can freely move in the pushing pipe, the elastic thrombus crushing mesh is arranged around the inner core pipe, the far end of the elastic thrombus crushing mesh is fixed at the far end of the inner core pipe, the near end of the elastic thrombus crushing mesh is fixed on the inner core pipe, the elastic collection mesh basket is arranged around the inner core pipe, the far end of the elastic collection mesh basket is connected with the near end of the elastic thrombus crushing mesh, and the near end of the elastic collection mesh basket is fixed at the far end of the pushing pipe. The maximum diameter of the elastic collection mesh basket is larger than that of the elastic thrombus crushing mesh under the opening condition. The thrombus crushing and taking device is high in efficiency and safety and easy to operate, thrombi are completely removed and easily pumped and removed, and blood vessels are effectively protected.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and mainly relates to a segmented thrombus crushing device. Background technique [0002] Stroke is a common type of disease in medicine. China is also a major stroke country in the world. Stroke has become the number one cause of death among Chinese residents. According to relevant foreign epidemiological studies, there are 3 out of 4 stroke patients. There are varying degrees of disability. Acute ischemic stroke is the most common type, accounting for 80% of all strokes, especially acute stroke caused by large vessel occlusion, which has a high mortality and disability rate and will bring great harm to patients. Once a stroke occurs, It will bring a heavy burden to patients, families and society. [0003] Once a thrombus forms in a blood vessel in the human body, the time window for intravenous thrombolysis is only 4.5 hours for patients with acute and chronic cerebral arterial / venous...

AI Technical Summary

Problems solved by technology

However, the above-mentioned products have some defects, especially when the thrombus has been formed for a long time, the hardness of the thrombus is greatly increased, and it is difficult for the suction catheter to suck the thrombus into the catheter. Similarly, the bowl-shaped thrombus retrieval guide wire cannot effectively cut and break the harder thrombus.

In addition, it is hoped that the micro-guide wire can pass through the thrombus during the process of thrombus fragmentation. However, due to the small diameter of the micro-guide wire, it is easy to bend when encountering thrombus resistance, and it is difficult to insert the thrombus and align it with the center position. Even if the thrombus can be crushed, it will take a long time to complete the injury, which increases the difficulty and risk of the operation

There is also a stent similar to a stent placed in a blood vessel, which only collects thrombus by blocking it and removes the thrombus adsorbed on the surface of the stent out of the body, so the thrombus removal effect is not complete and the efficiency is low

Due to the limitation of structural design, the existing thrombus removal equipment has insufficient operating range, and the effects of crushing, cutting, collecting, suctioning and taking out of thrombus are not good.

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