In-vitro left ventricle auxiliary device

Abstract

The invention provides an in-vitro left ventricle auxiliary device. The device is composed of an automatic pressure regulating type blood pump with an optical fiber pressure sensor, an external driving device and the like. The automatic pressure regulating type blood pump comprises a power cavity, a blood cavity, a power catheter, an ascending catheter with an optical fiber pressure sensor and the like. Wherein the blood pump comprises a power cavity and a blood containing cavity which are separated by an elastic membrane, and the ascending catheter is provided with a blood drawing opening with a flexible tip and a blood discharging valve. Pumped pressure is adjusted through an external driving device to influence the deformation amount of the elastic film so as to adjust the pump bleeding amount. The blood containing cavity is connected with an ascending catheter, and an optical fiber pressure sensor is buried in the wall of the ascending catheter, so that the functions of blood conveying, pressure sensing and signal transmission can be achieved. When the system works, the optical fiber pressure sensor collects left ventricle blood pressure data in real time and transmits the data to an external driving device. The external driving device dynamically adjusts the pumping pressure according to the obtained left ventricle data and transmits the pressure to the blood containing cavity through the power cavity, and automatic regulation and control of blood pumping are achieved. The left ventricle auxiliary device is an important improvement of a traditional left ventricle auxiliary device; the blood pump does not damage blood cells and does not need to be implanted into a body; dynamic regulation and control of blood pumping within a certain range are achieved, and a larger operation space is provided for clinic; ventricular blood pressure data are monitored in real time, a basis can be provided for clinical diagnosis and treatment, and the safety and effectiveness of left ventricular disease treatment are improved.

Description

technical field [0001] The invention relates to an extracorporeal left ventricular assist device and relates to the technical field of interventional therapy. Background technique [0002] Heart failure is the terminal stage of the development of all cardiovascular diseases. With the current increase in the incidence of cardiovascular diseases, the incidence of heart failure also increases, and the fatality rate of heart failure is equivalent to that of malignant tumors. Left heart failure is the most common type of heart failure. Left heart failure refers to heart failure caused by left ventricular compensatory dysfunction. It is very common clinically and is characterized by pulmonary circulation congestion. Left heart failure is divided into acute left heart failure and chronic left heart failure. Chronic left heart failure is the final destination of most cardiovascular diseases and the leading cause of death. Acute left heart failure is due to the sudden abnormality of...

AI Technical Summary

Problems solved by technology

[0008] However, the existing disclosed technology still has the following three deficiencies: (1) The blood pump is usually placed in the aorta in the body, which is prone to infection after surgery, and it is easy to destroy blood cells or cause hemolysis and thrombosis; (3) Lack of real-time pressure sensing capability in the left ventricle, unable to adjust blood pumping speed in real time according to changes in treatment effects and body functions, Pressure and perfusion flow

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