With the improvement of people's living standards, medical monitoring equipment has gradually entered the family, and sphygmomanometer is a common medical device for household use. The sphygmomanometer uses a pneumatic cuff and monitoring device to measure blood pressure by listening. It can also measure blood pressure using a pressure sensor. This sphygmomanometer can be achieved in two ways: by manually inflating the cuff, using a stethoscope to monitor the sound of the arterial wall (auscultation), or by embedding a pressure sensor inside the sphygmomanometer to measure the vibration of the arterial wall (vibration) law).
There are two types of automatic blood pressure monitors: the upper arm sphygmomanometer and the wrist sphygmomanometer. The upper arm sphygmomanometer contains an air bag that is attached to the upper arm during measurement. The inflatable cuff is connected by a leather tube to a monitor placed near the arm. The wrist sphygmomanometer is small in size and the entire device can be wrapped around the wrist. Therefore, these products are more stringent in size. Some upper-arm sphygmomanometers require manual inflation, but most of the upper-arm and wrist sphygmomanometers on the market today are fully automated.
Figure 1: Upper arm sphygmomanometer.
Measurement technique: The automatic electronic sphygmomanometer first inflates the cuff to provide sufficient pressure to prevent blood flow in the local aorta. As the pressure is gradually released, the measured pressure value is the systolic blood pressure when blood begins to flow through the artery. The rate of pulse beat can also be monitored. Continue to slowly deflate, so that the pressure inside the cuff is gradually reduced. When the cuff pressure is reduced to be equal to or slightly lower than the diastolic pressure, the blood flow is restored. The measured value is equivalent to the diastolic pressure of the heart. This completes a complete measurement cycle, which is done by pumps, pneumatic cuffs, electronic valves and pressure sensors in the unit.
The signal generated by the pressure sensor is conditioned by an op amp or instrumentation amplifier and sent to the ADC. Then, for different types of sensors and monitors, the systolic, diastolic, and pulse rates are calculated in the digital domain using appropriate methods, and the results are displayed on the LCD screen, usually with data and corresponding time/ The date is stored in non-volatile memory.
Figure 2: Wrist sphygmomanometer.
FUNCTION
Increase the volume of feces, enhance bowel movement, reduce the risk of intestinal cancer, etc. , combined with the removal of bile acids in vivo, lower serum cholesterol significantly, cause the feeling of satiety easily, can significantly reduce blood glucose levels after meal.
PHYSICAL PROPERTIES
1. Can replace sugar and fat in food and improve food texture and taste
2. Taste fresh, easy to release the food flavor. In various applications, have the function of improving the food flavor
3. Widely recognized as a good source of dietary fiber
4. Prebiotics which can improve the digestive tract health
5. Low blood glucose response, metabolism does not need insulin, suitable for diabetic patients
6. Satiety, help control body weight, apply to consumers who want to control the carbohydrate intake.
7. Good toleration.
Because of its low heat, stability, high tolerance characteristics, can be widely used in a variety of food, especially in low-energy, high fiber and other functional foods.
Polydextrose,dietary fiber, fiber
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