Engineers Fluid Interfaces Group at the Massachusetts Institute of technology (MIT) have created a wearable sensor that attaches to the cheek of the person and gathers information about the concentration of certain biological markers in saliva in real time. The developers of the device on the website of the MTI noted that such a device can save a person from having the blood test. It is equipped with a compact biomechanical paper sensor that reacts to the substances of interest in saliva, allowing you to monitor the condition of the body.
A blood test is a fairly reliable way to know what is happening and what is the status of the human body as a whole and its individual organs in particular. However, a blood test is not always easy, it is difficult to carry out continuously, despite the fact that some studies require monitoring of changes in the concentration of certain substances in the body during the day. At the same time, there are already alternative methods for determining the concentration of certain chemicals in the body. For example, to define the same content of glucose in the blood invented the “smart patches“.
Scientists from the Massachusetts Institute of technology to apply the accounting alternative approach by creating a sensor that other researchers or doctors could use to conduct ongoing analysis of the health status of patients. The device consists of a paper roll, a small electric motor, the camera and the tube adjacent to the lip. In contact with the saliva of paper with the elements, the concentration of which tracks the attending physician, it changes its color. From time to time, a camera mounted on the sensor, takes the paper and sends images to the user’s smartphone.
The paper roll is unwound using a small electric motor after each measurement and must be replaced periodically. In addition to the sensor compounds in the device is an inertial sensor that tracks movement of the patient.
The developers note that it is possible to add other components, for example, a receiver of GPS signals to account for the movements of the patient and the detection of correlations between biochemical parameters and location. The authors plan to tell the technical details of the development at the conference EMBC 2019 July 2019.
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