Delivery system for abdominal aortic stent

Abstract

The invention relates to a delivery system for an abdominal aortic stent. The delivery system includes an outer sheath that can be separated and connected to the delivery system, an inner tube that supports the stent within the outer sheath, a fixed structure that controls the release of the proximal end of the stent, a joint that separates and connects the outer sheath to the delivery system, and a rotating handle. According to the delivery system of the present invention, the outer diameter of the outer sheath can be smaller, so that it can be introduced percutaneously without passing through a blood vessel incision, thereby reducing trauma; the proximal end of the stent can be released later, so that the release of the stent can be accurately positioned; The sheath can be separated, so that the channel can be reserved for the introduction of the branch stent, which simplifies the operation process; the handle can be rotated to facilitate the operation of the doctor.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a delivery system for an abdominal aortic stent, which is used for interventional treatment of aortic aneurysm (including aortic dissection). Background technique [0002] Abdominal aortic disease, such as abdominal aortic aneurysm and aortic dissection, is one of the deadliest and most difficult vascular surgical diseases. The previous traditional treatment method was laparotomy and artificial blood vessel replacement. The operation is traumatic and has a high mortality rate. In recent years, a minimally invasive and simple interventional surgery method has been developed for patients with high-risk abdominal aortic dissection, using stent grafts to perform endovascular repair of aortic dissection. In this operation, the covered stent is delivered to the lesion of the abdominal aorta through the minimally invasive incision of the femoral artery through the delivery system, so as...

AI Technical Summary

Problems solved by technology

[0004] At present, the outer diameter of the outer sheath tube of the aortic minimally invasive interventional delivery system used for the treatment of abdominal aortic aneurysm is relatively large, which requires a large incision on the femoral artery, resulting in greater trauma to the patient, and the stent Release control prone to shifting

With such a delivery system, the operation is laborious, complicated and difficult for the doctor to operate.

In addition, the existing abdominal aortic stent delivery system has high requirements on the patient's femoral artery, resulting in fewer applicable patients and a narrow range of indications

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