Implanted in-vivo continuous blood sugar monitor

Abstract

The present invention provides an implanted in-vivo continuous blood sugar monitor. A laser generating and control unit is connected with a microcomputer for receiving the control command transmitted from the microcomputer. The output end divides the laser to two beams through a beam splitter. One beam is sampling light and is output to an optical power sampling unit. The other beam is output light and is output to an attenuation absorbing measuring unit. The optical power sampling unit detects and amplifies the sampling light, and then transmits the detected and amplified sampling light into a microcomputer through a data collection module. The attenuation absorbing unit transmits the optical absorbing information of obtained tested medium into the microcomputer for executing data modeling through the data collection module. The invention adopts a CO2 laser as a light source. The measuring mode adopts background removal. The noise caused by environmental factor and influence caused by instrumental shift are prevented. The measuring precision is increased. The accurate single wavelength absorbing amplitude can be obtained and more accurate absorbance value can be obtained. The power of laser is adjustable. The measuring precisions of system under different laser powers can be analyzed. A mode of multi-wavelength measurement can be adopted for increasing the modeling precision thereby increasing the prediction precision.

Description

technical field [0001] The invention relates to a blood sugar monitoring device. In particular, it relates to a novel implantable in-body continuous blood glucose monitoring device based on mid-infrared spectroscopy technology for minimally invasive, continuous, and real-time blood glucose monitoring. Background technique [0002] Diabetes is the second killer of modern diseases, and its harm to the human body is second only to cancer. As a relatively common endocrine disease, it is more and more harmful to people's physical and mental health, and it has a tendency to expand and become younger . The research results show that: the main feature of diabetes is the slowly and continuously rising blood sugar concentration. When the blood sugar concentration rises to a certain height, the sugar can be detected in the urine when it is higher than the renal glucose threshold. Diabetic patients have metabolic disorders due to abnormal blood sugar concentration, which can easily le...

AI Technical Summary

Problems solved by technology

However, at present, the accuracy of the method of measuring blood glucose concentration by invasive blood sampling is not very high, and the non-invasive blood glucose measuring instrument has not been successfully developed. Therefore, it is very meaningful to study the method of measuring blood glucose concentration under minimally invasive conditions. It can not only replace traditional biochemical detection The method achieves the purpose of saving consumables and rapid measurement, and it is also the premise and basis for non-invasive detection of blood glucose concentration, and it is also an important applied basic research method for continuous monitoring of blood glucose concentration during surgery

[0010] Using CO 2 The method of measuring biochemical indicators in blood with laser as an infrared light source combined with ATR measurement method can be traced back to 1979. Kaiser of Germany first proposed this method in that year and applied for a patent (UnitedStates Patent 4169676). He patented it here The basic principle, system construction and experimental method of this method are described in , and there are qualitative experimental results of measuring blood glucose concentration, but no quantitative analysis is made, and the measured blood is an isolated blood sample

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