Thrombus thrombolysis and aspiration device

Abstract

The invention discloses a thrombus thrombolysis and aspiration device. The thrombus thrombolysis and aspiration device comprises an aspiration catheter and a thrombolysis catheter arranged in the aspiration catheter; through cooperation of the aspiration catheter and the thrombolysis catheter, the invention achieves flushing and aspirating on the stubborn thrombus, and a thrombus removal effect isimproved; according to the invention, a first balloon is arranged on the aspiration catheter, a second balloon is arranged on a thrombolysis flushing cavity of the thrombolysis catheter, and the blood vessel is blocked and sealed through inflation, so that blockage of the far-end blood vessel caused by exfoliated thrombus or tiny thrombus is prevented, secondary blockage is avoided, and the use safety of the device is improved.

Description

technical field [0001] The invention relates to medical equipment, in particular to a thrombolysis and suction device. Background technique [0002] Stroke (Stroke) is the scientific name of stroke, which is a sudden onset of cerebral blood circulation disorder disease, also known as cerebrovascular accident. Stroke is mainly caused by cerebrovascular stenosis, occlusion or rupture, and is divided into ischemic stroke (such as cerebral infarction, transient ischemic attack) and hemorrhagic stroke (such as cerebral hemorrhage and subarachnoid hemorrhage). [0003] At present, thrombolytic therapy is still the mainstream treatment for ischemic stroke, but it has certain limitations, mainly reflected in the short treatment time window and low revascularization rate. [0004] The treatment method of mechanical thrombectomy has significant advantages in the treatment effect. At present, the commonly used mechanical thrombectomy method is to directly perform negative pressure suc...

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Problems solved by technology

[0003] At present, for ischemic stroke, thrombolytic therapy is still the mainstream treatment, but it has certain limitations, mainly reflected in the short treatment time window and low revascularization rate.

[0004] The treatment method of mechanical thrombectomy has significant advantages in the treatment effect. At present, the commonly used mechanical thrombectomy method is to directly perform negative pressure suction on the suction catheter to suck the thrombus out of the blood vessel, thereby rebuilding the blood flow. However, when the thrombus is located in a serious The distal end of the stenotic lesion or the thrombus is stubbornly attached to the vessel wall, the effect of pure negative pressure suction is very limited, and it will increase the risk of surgery

[0005] In addition, if the suction catheter is simply used to suck the thrombus, due to the pressure caused by the suction, the remaining thrombus after the suction is likely to be crushed and become smaller thrombus, which will run to the distal end of the blood vessel and cause secondary blockage; the market needs A device that can flush and aspirate stubborn thrombus, improve thrombus removal effect, and prevent secondary blockage. The invention solves such problems

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