Vena cava-atrium dextrum covered stent of tricuspid insufficiency functional correction
A stent-graft, insufficiency technology, which is applied to stents, devices of human tubular structures, blood vessels, etc., can solve problems such as high pressure in the venous system, and achieve the effect of simplifying the operation process and achieving good durability.
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[0013] exist figure 1 and figure 2 In the middle, the two ends of the vena cava-right atrium stent graft are the superior vena cava body (3) and the inferior vena cava body (8), and the head of the superior vena cava body (3) has a stent crown (2) to help fix the stent . After the stent is released as a whole, due to the elasticity of the memory alloy wire (4), the stent forms a space structure with two inlets and one outlet in the superior and inferior vena cava and the right atrium. Among them, the opening of the superior vena cava (1) and the opening of the inferior vena cava (9) of the covered stent receive the venous return blood from the superior and inferior vena cava respectively, and the latter collects in the expanded part in the middle of the covered stent, namely the blood pool (5) During the diastolic period, due to the negative pressure in the right atrium and the room, the blood rushes through the blood outlet of the stent graft and the one-way diversion valv...
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