Composite aortic arch reconstruction system and using method thereof

Abstract

The invention provides a composite aortic arch reconstruction system and a using method thereof. The system comprises a quadrifurcation vascular prosthesis and a cross arch covered stent; the vascularprosthesis comprises a vascular body, an arch upper branch communicated with the vascular body and a perfusion branch, the arch upper branch is sequentially divided into an anonyma branch, a left common carotid branch and a left collarbone lower branch, and blood vessel lumina are communicated with each other. The cross arch covered stent comprises an inner layer metal stent and an outer layer vascular cover, and conical and preflex designs which more conform to the physiological structure of an aorta of a human body are adopted. When an aortic arch surgery is carried out, deep hypothermic circulatory arrest can be avoided by means of the system to reduce the difficulties of vascular anatomy and vascular anastomosis, shorten the surgical operating time and improve the success rate of thesurgery.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a composite aortic arch reconstruction system and its application method. Background technique [0002] Aortic arch disease, including aortic dissection, penetrating ulcer, aortic intramural hematoma, aortic aneurysm, etc., has always been the biggest difficulty and challenge in the department of aortic surgery and endovascular intervention. Treatment methods include: traditional surgery and endovascular interventional surgery, represented by Sun's surgery and chimney technique respectively. However, there are various problems in the existing treatment methods: deep hypothermic circulatory arrest is required during Sun's operation to replace the blood vessels in the aortic arch and place the elephant trunk stent in the descending aorta. The requirements for anatomy and anastomosis are high, and deep hypothermic circulatory arrest has a great impact on the heart, brain, liver an...

AI Technical Summary

Problems solved by technology

However, there are various problems in the existing treatment methods: deep hypothermic circulatory arrest is required during Sun's operation to replace the blood vessels in the aortic arch and place the elephant trunk stent in the descending aorta. Anatomical and anastomotic requirements are high, and deep hypothermic circulatory arrest has a great impact on the heart, brain, liver and kidney function, gastrointestinal function, and blood coagulation function of the patient, resulting in many postoperative complications and high mortality

[0005] However, there are currently no artificial blood vessels and covered stents specially designed for hybrid hybrid surgery in clinical practice.

[0006] There are many problems in the existing artificial blood vessels: firstly, the normal blood flow direction of the carotid artery is changed, which is easy to cause blood vessel distortion and increase thrombosis; secondly, all the branched blood vessels originate from the ascending aorta, making it difficult to perform internal drainage and increase the risk of bleeding; there is insufficient space , the branch vessels are easily compressed, which affects the branch blood flow; again, some patients have short ascending aorta, which may easily cause insufficient proximal anchoring area of ​​the covered stent, resulting in proximal endoleak and stent displacement

[0007] There are also many problems in the existing covered stents: the stent is not designed for the shape of the arch, and it is used beyond the indication; the segment of the stent is long and cannot conform to the curved shape of the arch; Type stent does not conform to the rule that the diameter of the aorta gradually becomes thinner from near to far, which increases the risk of damage to the aortic wall; there is no pre-bending design, which leads to the upturning of both ends of the stent, which increases the risk of recurrent dissection; the retrograde introduction of the stent relies on The diameter of the leading blood vessels such as the femoral artery increases the risk of arterial injury

It requires the good cooperation of cardiovascular surgeons and interventional doctors, takes up human resources, and the operation process is complicated, which limits its development and is not conducive to popularization and promotion

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