Integrated device for abstracting, collecting, transporting and measuring trace tissue fluid

Abstract

An integrated device for abstracting, collecting, transporting and measuring trace tissue fluid is provided with a vacuum Venturi tube generator which is communicated with a positive pressure source through pipe. The vacuum end of Venturi tube generator is respectively communicated with a tissue fluid absorbing chamber, a sample solution collecting chamber and a waste liquid tank through pipes. One end of tissue fluid absorbing chamber is communicated with a phosphate buffer box through a pipe. The outflow end of tissue fluid absorbing chamber is communicated with the sample solution collecting chamber through a pipe. The outflow end of sample solution collecting chamber is communicated with a flowmeter used for measuring the volume of tissue fluid. The flowmeter is communicated with the waste liquid tank through two paths of a pipe and a bidirectional gate valve installed on the pipe, wherein one path is directly communicated with the waste liquid tank, and the other end is communicated with the input end of glucose sensor. The invention realizes all actions which are continuous in one set of device, automatic control and operation. The invention realizes the miniaturization of whole device for abstracting, collecting, transporting and measuring tissue fluid.

Description

technical field [0001] The present invention relates to the extraction of trace tissue fluid, in particular to a method based on the vacuum generation principle of a venturi tube for the extraction, collection and transportation of trace tissue fluid in the tissue fluid extraction link of a transdermal tissue fluid extraction type human blood glucose minimally invasive detection system and metering integrated device. Background technique [0002] Blood glucose testing is a key link in diabetes prevention and treatment. The glucose level in the interstitial fluid has a high correlation with the blood sugar level, which provides a detection basis for a minimally invasive blood glucose detection method that extracts the human interstitial fluid through the skin and detects the glucose concentration in it to predict the blood glucose concentration. As people's demand for blood glucose detection process is painless, less invasive, and the detection method is dynamic and continuo...

AI Technical Summary

Problems solved by technology

In the process of extracting interstitial fluid from the body to the outside of the body and sending it to the detection instrument for detection, the current methods generally have a low degree of automation, separation of extraction, collection, transportation and metering processes, scattered devices, and in many cases rely on manual work and complex devices And it is difficult to miniaturize and other disadvantages

Images