Magnetic navigation catheter and navigation method for internal organ artery reconstruction in arterial stenting

Abstract

The invention relates to a magnetic navigation catheter for branch artery reconstruction in arterial stenting. The magnetic navigation catheter comprises a main body magnetic catheter and a guide magnetic catheter, the guide magnetic catheter comprises a guide catheter, the tail end of the guide catheter penetrates through a balloon, a guide wire extending into the guide catheter from the outside is arranged in the guide catheter in a penetrating manner, and inflation of the balloon is controlled by a balloon control system; a first magnetic device protruding laterally is arranged on the outer wall, close to the balloon, of the guide magnetic catheter; an inner protective layer tube with a cavity is arranged in the main body magnetic catheter, the diameter of the inner protective layer tube is smaller than that of the main body magnetic catheter; one end of the main body magnetic conduit is a bent part, the tail end of the bent part is a magnetic suction area of the main body magnetic conduit, and a second magnetic device which is correspondingly magnetically sucked with the first magnetic device is arranged in an annular space between the main body magnetic conduit and the inner protective layer pipe in the magnetic suction area; after the first magnetic device and the second magnetic device are attracted, the cavity at the tail end of the bending part can be aligned with the branch artery, so that the position of the branch artery is accurately and stably determined in an operation.

Description

technical field [0001] The invention relates to an auxiliary device and a navigation method in the implantation of a percutaneous aortic intraluminal covered stent, belonging to the technical field of medical devices. Background technique [0002] Percutaneous endovascular stent grafting (herein referred to as aortic stenting) is a type of endovascular interventional surgery, and is currently the main method for the treatment of aortic aneurysm, aortic dissection and other aortic diseases. In this procedure, a stent-graft is placed in the diseased segment of the artery to seal the aortic aneurysm or rupture to maintain the stability of the aortic hemodynamics. When the position of the stent-graft covers important branch arteries, the branch arteries need to be reconstructed to maintain adequate blood flow to the branch arteries and their perfused tissues, so as to achieve complete occlusion of the tumor or rupture while maintaining visceral and tissue blood flow purpose of ...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a magnetic device for locating the opening of branch arteries by magnetic attraction after the stent-graft is implanted in the operation, aiming at the situation that the branch artery reconstruction technology is difficult to locate in the current percutaneous aortic endoluminal stent-graft implantation. Catheter, and provide the corresponding interventional operation method to locate the opening of visceral branch arteries by magnetic attraction after the stent-graft is implanted in the operation

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