Reversely buckled rapidly connected aorta composite stent

Abstract

The invention discloses a reversely buckled rapidly connected aorta composite stent which comprises an aorta arch artificial blood vessel and a stent artificial blood vessel, wherein one end of the aorta arch artificial blood vessel is connected with one end of the stent artificial blood vessel. The stent is characterized in that a reversely buckled connector is arranged at the connecting part ofthe aorta arch artificial blood vessel and the stent artificial blood vessel; the reversely buckled connector comprises a connecting ring; the aorta arch artificial blood vessel is connected with oneend of the connecting ring; the stent artificial blood vessel is connected with the other end of the connecting ring; an elastic reversely buckled ring is arranged at one end facing to the aorta archartificial blood vessel, of the connecting ring; the elastic reversely buckled ring is positioned at the periphery of the aorta arch artificial blood vessel; an arc-shaped groove is formed in a part in adjacent connection with the connecting ring, of the outer circumferential surface of the elastic reversely buckled ring; and the elastic reversely buckled ring is provided with a rapid tightening structure. The aorta composite stent disclosed by the invention can be rapidly and reliably fixed on an aorta blood vessel, meanwhile, a hemostasis function can be achieved, suture which takes time canbe avoided, the profound hypothermia circulation arrest time can be greatly shortened, and the survival rate of patients can be increased.

Description

technical field [0001] The invention relates to a composite stent, in particular to a reverse buckle quick-connect type aortic composite stent, which belongs to the technical field of medical device design. Background technique [0002] In the traditional type A aortic dissection operation, the replacement aortic arch artificial vessel and the stent artificial vessel are two completely independent parts, which need to be sutured together with the aortic vessel wall; and during the aortic arch operation, the human body In the state of deep hypothermia and circulatory arrest (the temperature of the human body drops to 18-25°C, at this time, the brain mostly undergoes unilateral cerebral perfusion). During the operation, all organs except the brain have the process of circulatory arrest, ischemia and hypoxia. Since the time of circulatory arrest during the operation mainly depends on the suturing time of the artificial blood vessel in the aortic arch and the stent artificial bl...

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Problems solved by technology

[0003] The Chinese invention patent with the application number "CN201521106300.4" discloses a surgical aortic arch stent artificial blood vessel structure, which includes a first artificial blood vessel, a connecting ring and a second artificial blood vessel, which can be quickly realized by using surgical wires. The suturing and connection reduces the difficulty of suturing during artificial blood vessel replacement surgery and shortens the operation time. However, because the product needs to be sutured during the operation, the suturing operation not only takes a long time, but also affects the doctor's proficiency. The requirements are very high, and in the operation where time is life, any waste of time will affect the success rate of the operation and the survival rate of the patient

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