Accurate-positioning aortic valve passing device

Abstract

The invention provides an accurate-positioning aortic valve passing device. The device comprises a main conduit, a support frame and a control guide wire; the main conduit comprises a first end, a pipe body and a tail end in sequence; the side wall of the head end is connected with the support frame; the control guide wire is installed inside the main conduit, and the control guide wire is fixed inside the head end, passes through the pipe body, and protrudes from the tail end; the tail end is provided with a support switch and a direction control device, the support switch is connected with the support frame and is used for controlling the opening and closing of the support frame, the direction control device is connected with the control guide wire and is used for controlling the direction of the head end. By aiming at the problem of alignment of the aortic valve through the device, and the support frame is connected at the head end of the conduit to avoid the problem of slippage ofthe main conduit; the support frame also functions to fix a movement range of the head end, which prevents the damage of the intima of the blood vessel, ensures the success of the operation within a small number of times, reduces the pain of the patient, reduces the time of surgery, reduces the exposure time of patients and surgeons under the X-ray, and reduces the risk of surgery.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a precisely positioned aortic valve passing device. Background technique [0002] Valvular heart disease is a common heart disease, mainly manifested as structural or functional changes in the mitral valve, aortic valve, tricuspid valve, and pulmonary valve due to various reasons, resulting in abnormal cardiac hemodynamics, and ultimately heart failure. Exhausted. The incidence of heart valve disease also increases significantly with the aging of the population. Surgical treatment is still the first choice for patients with severe valvular disease, but for patients who are elderly, complicated with multiple organ diseases, have a history of thoracotomy, and poor heart function, the surgical mortality rate is high, and some patients even lose the opportunity for surgery . In recent years, transcatheter valve replacement or repair has gradually matured and been widely used, and ha...

AI Technical Summary

Problems solved by technology

[0003] A very critical step in TAVR surgery is that the guide wire enters the left ventricle through the stenotic aortic valve. Only after this step can the subsequent steps be carried out. The existing method is to help select the appropriate transvalvular angle through preoperative imaging evaluation. Use the left coronary angiography catheter as the guide catheter, and use a straight-tip guide wire to try to pass through the stenotic aortic valve repeatedly. Sometimes it may take a long time, and it is related to the experience and strategy of the surgeon. If necessary, different guide catheters need to be replaced Trying it will undoubtedly increase the operation time and also increase the risk of operation

The main reason is that there is no special aortic valve transvalvular guide catheter, and the existing coronary angiography catheter is mainly used to replace it.

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