Sensor for measuring flow of cardiac arterial collateral blood vessels

Abstract

The invention discloses a sensor for measuring flow of cardiac arterial branch blood vessels, including a heating portion and sensing portions that are controlled to work cooperatively, wherein at thetime of use, the heating portion covers the surface of the aortic vessel of the heart; the sensing portions are uniformly arranged on the surface of the collateral blood vessel tissue; the heating portion heats the blood passing through the aortic artery of the heart, and detects the temperature change information generated when the heated blood flows through the cardiac artery collateral vesselby the sensing unit array of the sensing portions, thereby realizing the measurement of the cardiac artery collateral vessel flow rate based on the temperature change information. The sensor of the invention can be implanted into a human body, can continuously and long-term detect the blood vessel state of the cardiac artery side branch, and effectively solves the problem of monitoring the blood circulation state of the arterial blood vessel after the cardiac bypass operation by simultaneously measuring variables such as temperature, pressure, blood flow and the like, and provides an effectivebasis for the health of the patient.

Description

technical field [0001] The invention relates to a sensor capable of measuring the flow rate of collateral blood vessels of a cardiac artery. Background technique [0002] After 60 to 70 years of development, implantable devices have been widely used in human health testing and treatment. At present, the main applications are pacemakers, artificial bones and a series of medical auxiliary devices. Implantable devices are usually affected by factors such as volume, power consumption, and data transmission, and these factors can be avoided by developing devices based on MEMS technology. In recent years, MEMS-based implantable devices have made great progress. In the United States, MEMS-based implantable devices are being developed at a rate of 8% to 10% per year. With the development of electronic technology, material science, and processing equipment technology, MEMS technology is ushering in its explosive period. We believe that implantable devices based on MEMS will be the m...

AI Technical Summary

Problems solved by technology

Faced with this problem, the existing solution is usually to use ultrasonic Doppler technology to detect blood flow velocity. This technology has the following problems: First, ultrasonic Doppler technology is affected by the incident angle of microwaves, and the impact is very large. In actual measurement, the relative movement between the device probe and the arterial blood vessel usually causes a huge error in the detection result. At this time, an experienced doctor is usually required to avoid the wrong measurement result, which greatly limits the effectiveness of the device; secondly, the ultrasonic device is usually huge , it is very inconvenient to use, and can only be used during the operation, and after the operation, the dangerous period after the human body is sutured cannot be effectively monitored; in this case, an implantable human body that can be continuously monitored for a long time , it is very necessary to measure the blood flow of heart arteries effectively after bypass surgery.

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