Thrombus-removaldredging device for medical surgery

Abstract

The invention relates to a thrombus-removaldredging device for medical surgery and belongs to the field of medical tools and instruments, in particular to the field of thrombus-removaltools for medical surgery. The thrombus-removaldredging device comprises an outer cannula, an inner cannula and a liquid channel, wherein the inner cannula is coaxially arranged in the outer cannula, can axially telescope in the axial directionof the inner cannula and can extend out from the head portion of the outer cannula so as to puncture a thrombus; the outer side of the head portion of the outer cannula isprovided with a flexible sealing cover and a supporting frame, the supporting frame is located in the flexible sealing cover and used for radially propping the flexible sealing cover open; a first sealing portion is arranged between the inner cannulaand the outer cannula, and the outer cannula is provided with a pressure control hole communicated with the flexible sealing cover; the liquid channelis for sucking away the thrombus and can adjust the pressure in the flexible sealing cover through the pressure control hole to make the flexible sealing covercontractradially. For overcoming the shortcomings in the prior art, the structure is simplified, the lower limit of the size of the structure can be designed to be lower, the broken thrombus can be sucked away, and the probability can be reduced that the broken thrombus blocks the blood vessel again.

Description

Technical field [0001] The invention relates to a thrombus dredging device used in medical operations, belonging to the field of medical tools and instruments, in particular to the field of tools used for thrombus dredging for medical operations. Background technique [0002] Thrombus is a small piece formed by the blood flow on the surface of the exfoliated or repaired part of the blood vessel of the cardiovascular system. It is composed of insoluble fibrin, deposited platelets, accumulated white blood cells and trapped red blood cells. The scary thing about thrombosis is that it can cause local blockage, which can cause organ ischemia, hypoxia and failure. Thrombosis can appear in arteries in any part of the body. If it appears at the bifurcation of the cerebral blood vessel, it will cause cerebral infarction or cerebral embolism, while it may cause coronary heart disease if it appears at the coronary artery. These diseases may cause sudden death. Generally, thrombectomy sur...

AI Technical Summary

Problems solved by technology

[0003] Although there are some tools in the prior art that can be inserted into blood vessels to treat venous thrombosis minimally invasive surgery, at that time most of the tools used mechanical stripping, and the stripped fragments would flow with the blood instead of being excreted from the body. , which in turn increases the probability of reoccurrence of thrombus. In addition, because the position where blockage is likely to occur in the blood vessel is often a thinner blood vessel area, the existing resection tool has complex equipment and high cost due to the many operations that need to be performed. The structure of the control actuator is more, resulting in a larger volume, which is not conducive to thrombus removal in thin blood vessels

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