How was the blood pressure monitor invented? Whose blood pressure was the first blood pressure monit

Who invented the blood pressure monitor, a must-have equipment for hospital doctors? It's really saved a lot of people.

The earliest blood pressure monitors were used to measure blood pressure in horses. The method of measurement is to connect the root tube to the horse's blood vessels, and then attach a glass column to the other side of the tube, and the blood will rise under the action of blood pressure.

In 1733, a priest named Hayes measured the blood pressure of animals for the first time. He inserted a 270-centimeter-long glass tube with a small metal tube at the end of the tail into a horse's carotid artery, and the blood immediately entered the glass tube, up to 270 centimeters, which means that the blood pressure in the horse's carotid artery can maintain a blood column of 270 centimeters, and the height will increase or decrease slightly due to the horse's heartbeat, and the blood pressure will increase when the heart contracts (systolic blood pressure), and the blood pressure will drop when the heart relaxes (soothing blood pressure).

And the method is more bloody, directly with the tube and the horse's blood vessels, and then the other side of the tube is connected to a glass column, the blood will rise under the action of blood pressure, this is the earliest blood pressure measurement.

Civil Servant General Knowledge Question: What kind of animal was used to measure the blood pressure of what kind of animal was the earliest blood pressure monitor?

The principle of mercury sphygmomanometer Blood flows in blood vessels in the same way that water flows in a flat and smooth river, usually without sound, but when blood or water passes through a narrow pipe to form a vortex, it can make a sound, and the blood pressure monitor that measures human blood pressure is designed according to this principle.

The principle of an electronic sphygmomanometer.

We can know that if a river is originally unimpeded, but if it is forcibly blocked, when the pressure is too high, the force of the water pressure will be enough to break through these resistances to maintain the flow. The concept of blood pressure is the pressure at which blood flows through the walls of blood vessels. The blood coming out of the heart needs to be pushed around the body for a circle, and the heart pushes the blood forward by constantly contracting and relaxing.

How do you convert blood pressure to voltage?

After knowing the principle of the sphygmomanometer, we buy a pressure sensor, the main purpose is to convert the physical quantity of blood pressure into a voltage signal, and its working principle is to adjust the pressure of the gas through the filling and leakage of the pump. Because the pressure deforms the material inside the pressure sensor, the relative voltage difference is reflected after passing through the Huiss bridge, and in turn we can know the pressure at that time from the change in voltage.

What are the signals we want?

When the pressure of our wristband is equal to the blood pressure, the blood begins to circulate and produce the so-called cuff sound, which is the systolic blood pressure, and we must start recording from here until finally when the cuff sound is absent, this point is diastolic blood pressure.

How do I get the signal of systolic and diastolic blood pressure?

When the pressure sensor is controlled by our linear charging and degassing, there will be a DC voltage change, if we amplify the signal obtained by the pressure sensor in a certain proportion, we can find that when the pressure is between systolic and diastolic pressure, we can see that there will be another communication signal from the oscilloscope. At this time, we divide the signal into two places, one is through the high-pass filter, so when the systolic blood pressure and diastolic blood pressure occur, the relative AC signal also occurs, then the other signal through the low-pass filter (that is, the pressure at that time), so that the person's systolic blood pressure and diastolic blood pressure can be known.

How do you express a signal?

The obtained blood pressure signal is converted by a D converter, and then the converted data is displayed on the LCD and monitor.

An instrument that measures blood pressure is called a sphygmomanometer. There are two types of blood pressure monitors: direct and indirect. The working principle of the two types of blood pressure monitors is not the same, the direct type is to directly measure the pressure change with a pressure sensor; The indirect method works by controlling the pressure applied to the measured part from the outside, and judging the results of the control and the information related to the production and disappearance of the Korotkoff sound.

The former can be tested continuously on both arteries and veins, while the latter can only measure the systolic and diastolic blood pressure of the arteries.

Now there are only three kinds of sphygmomanometers on the market, one is the traditional mercury sphygmomanometer, one is the oscillometric electronic sphygmomanometer, and finally the new type of auscultation automatic sphygmomanometer, which is medically recognized only by auscultation sphygmomanometer and auscultation automatic sphygmomanometer, electronic sphygmomanometer can be used for usual health care. As mercury sphygmomanometers are gradually withdrawn from the market, auscultation automatic sphygmomanometers will become the mainstream sphygmomanometer products in the future. At present, there is only one brand of auscultation automatic blood pressure monitor on the domestic market.

How does a blood pressure monitor work? I didn't expect it to be so complicated! No wonder they all look for a doctor.

In 1628, William Harvey (an English scientist) noticed that when an artery was cut, blood gushed out as if it was driven by pressure. By touching the beating of the pulse, the blood pressure is felt.

In 1835, Julius Erison invented a blood pressure monitor that transmitted the pulse of the pulse to a narrow column of mercury. When the pulse beats, the mercury beats up and down accordingly. For the first time, doctors can measure pulse and blood pressure without cutting an artery.

But because it was inconvenient to use, crudely made, and the readings were inaccurate, other scientists improved it.

A sphygmomanometer measures blood pressure based on the height of the mercury column, and a barometer measures air pressure in the same way. In 1860, Etienne --- Jules Maret (a French scientist) developed one of the best blood pressure monitors of the time. It amplifies the pulsation of the pulse and records the trajectory of the pulse on a web.

This blood pressure monitor can also be carried around. Mare uses this blood pressure monitor to study the abnormal beating of the heart.

Who invented the blood pressure monitor, a must-have equipment for hospital doctors? It's really saved a lot of people.

In 1896, Italian physicist Levaroki conducted in-depth analysis and research on the basis of Hals's test of measuring horse blood pressure, and after bold experiments, he finally made a blood pressure monitor that does not destroy blood vessels - arm wrap blood pressure monitor. This type of blood pressure monitor consists of three parts: a cuff, a pressure gauge and a balloon. The cuff is an inflatable rectangular rubber pouch that can be wrapped around the arm, attached to the pump rubber ball at one end and to a mercury manometer or other manometer device at the other.

Blood Pressure MeasurementWhen measuring blood pressure, a rubber bag is placed around the upper arm, and then air is slowly injected into the rubber bag, and when the pressure rises to a certain level, the arteries and blood vessels are flattened, causing blood flow to stop. Then, slowly deflate. When the cuff pressure is lower than the arterial pressure caused by the heart contracting and expelling blood, the blood begins to flow again, and the pulse can be heard with a stethoscope, and the pressure displayed by the mercury column is called systolic blood pressure; Diastolic blood pressure is measured when the pressure continues to decrease until it does not impede the flow of blood in the heart's diastolic state.

Obviously, Rivarokki's blood pressure monitor is much more scientific and safe than Hals's method of measuring blood pressure, so it is widely used by doctors around the world and has become an important blood pressure diagnostic tool.

People measured blood pressure first in animals to do experiments, and the British doctor Hals can be said to be the first person to develop a blood pressure monitor. In 1733, Hals had his blood pressure tested on one of his favorite tall horses. He connected a metre-long glass tube to one end of a copper tube, and then inserted the other end of the brass tube into the artery in the horse's neck, and then made the glass tube upright so that the blood rose along the glass tube, so that the horse's blood pressure was measured at a metre high.

Hals noticed that as the heart beats, the blood column rises and falls 5 10 centimeters. However, it is clear that this way of measuring blood pressure is neither safe nor convenient, and it is very damaging to blood vessels, and it is not suitable for human use at all.

Blood pressure is measured.