Thrombus taking device applied to artery and venous thrombus

Abstract

The invention provides a thrombus taking device applied to artery and venous thrombus, and belongs to the field of a medicine appliance. The thrombus taking device applied to artery and venous thrombus comprises a guide wire, a guiding catheter, a collecting assembly and an inner sheath, wherein the guiding catheter and the collecting assembly are respectively arranged on the guide wire in a sleeving way; the inner sheath is arranged on the guiding catheter in a sleeving way; the collecting assembly has a folding state extending into the guiding catheter and an unfolding state extending out toan upstream position of the guiding catheter; the collecting assembly comprises a filtering screen sleeve, an elastic framework and a constraint wire; the filtering screen sleeve is provided with a sealed opening end and an open opening end; the sealed opening end is positioned in an upstream position of the open opening end and is connected with the guide wire; the elastic framework is connectedwith the open opening end; the head end of the constraint wire is connected with the elastic framework; and the tail end of the constraint wire is arranged in the guiding catheter in a penetrating way. The thrombus taking device can be used for taking out thrombi and tumor emboli, and can be used for effectively preventing the risk of generation of distal embolization in in the thrombus taking process and in various intracavitary therapy processes such as endovascular balloon dilatation, angioplasty, thrombectomy and stent implantation.

Description

Technical field [0001] The invention relates to the field of medical equipment, in particular to a thrombus removal device applied to arterial and venous thrombosis. Background technique [0002] Thrombotic diseases such as arteries, inferior vena cava, iliac vein and deep veins of the lower extremities have always been difficult points in vascular surgery. Acute lower extremity arterial thrombosis requires more surgical incision and thrombus removal, but the surgical trauma is large, there is a risk of vascular damage and hemorrhage, and the risk of surgery is high. Although there are imported mechanical thrombus aspiration devices that can extract acute thrombus, there are expensive equipment and aspiration. Limitation of the suction site, incomplete suction effect, etc., also unable to aspirate subacute thrombus, let alone treat tumor thrombus, there is thrombus shedding during the suction process, which leads to distal embolism, and red blood cell destruction leads to hemolys...

AI Technical Summary

Problems solved by technology

Acute lower extremity arterial thrombosis more often requires surgical incision and thrombectomy, but the surgical trauma is large, there is a risk of vascular injury and bleeding, and the risk of surgery is high; although there are imported mechanical thrombus suction devices that can extract acute thrombus, the equipment is expensive and Due to application limitations such as limited suction site and incomplete suction effect, subacute thrombus cannot be suctioned, and tumor thrombus cannot be dealt with. During the suction process, thrombus falls off and causes distal embolism, and red blood cell destruction leads to hemolysis and hemoglobinuria. and other risks; catheter thrombolysis can dissolve acute thrombus, but clinically, the process of thrombolysis often takes several days, and a longer time window is not suitable for patients with acute lower extremity arterial thrombosis on the verge of limb necrosis or femoral bruise, femoral white swelling Venous thrombosis of the lower extremities and subacute arterial thrombosis are difficult to dissolve and treat tumor thrombi, and there is also a risk of distal arterial embolism caused by thrombus shedding during thrombolysis or pulmonary embolism during intravenous thrombolysis; catheter thrombolysis requires intravascular Catheters remain in place for several days, and there are risks of serious complications such as vascular puncture bleeding and transcatheter infection

[0003] At present, there are no devices for thrombus collection, arterial distal protection (i.e. prevention of garbage feet) such as lower extremity arterial angioplasty, stent implantation, and plaque atherectomy

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