Device for acquiring aortic pressure when measuring blood flow reserve fraction

Abstract

The invention discloses a device for acquiring aortic pressure when measuring a blood flow reserve fraction. The device comprises a blood pressure collecting terminal, wherein the blood pressure collecting terminal is provided with a blood pressure sensor, a one-way valve and a zero-calibration valve, wherein one end of the one-way valve is connected with a saline bag through an infusion tube, theother end of the one-way valve is connected to the blood pressure sensor, an allowable flow direction of the one-way valve is from the saline bag to the blood pressure sensor, the other end of the blood pressure sensor is connected with the zero-calibration valve, the other end of the zero-calibration valve is connected to the aorta of a patient through an external device, and the blood pressurecollecting terminal is also provided with a peristaltic pump and a zero-calibration valve electric-driving system. The device for acquiring the aortic pressure when measuring the blood flow reserve fraction overcomes the defects that existing equipment acquires the aortic pressure inconveniently and needs manual exhausting, and the peristaltic pump and the zero-calibration valve electric-driving system are arranged, so that the pressure measuring device is convenient to use, can automatically exhaust and can perform zero calibration automatically.

Description

technical field [0001] The invention relates to the technical field of medical diagnostic equipment, in particular to a device for obtaining aortic pressure when measuring blood flow reserve fraction. Background technique [0002] Fractional flow reserve (FFR) refers to the ratio of the maximum blood flow that can be obtained by the myocardial region supplied by the coronary artery to the maximum blood flow that the same region can theoretically obtain under normal conditions in the case of coronary artery stenosis. The ratio of mean intracoronary pressure (Pd) at the distal end of the stenosis to mean aortic pressure (Pa) at the coronary ostium in the state of maximum hyperemia. To calculate Fractional Flow Reserve (FFR), it is necessary to first obtain aortic pressure data with the help of equipment, such as systolic pressure, diastolic pressure and mean pressure of aortic pressure. The current blood flow reserve measurement equipment obtains aortic data by borrowing a si...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a device for obtaining aortic pressure when measuring blood flow reserve fraction, which overcomes the defects of inconvenient obtaining of aortic pressure and manual exhaust of existing equipment, and realizes that the pressure measuring device is easy to use and automatically exhausts. The purpose of gas and automatic zero calibration

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