Just one week after Xiaomi announced its strategic investment of $25 million in iHealth, iHealth launched a customized version of Xiaomi's smart sphygmomanometer on the 25th. The price is still 199 yuan with Xiaomi's characteristics.
This is another health equipment of Xiaomi after Xiaomi's bracelet, but how does it actually perform? Is it worth buying? Now let's have a look.
History and parameters
Xiaomi sphygmomanometer is an electronic sphygmomanometer based on the principle of indirect measurement, which is composed of a portable base and a cuff. The model of the machine is BP3, and the original version is designed for iOS devices.
This product itself is very mature. It was first released in the United States in 2011 and entered China in 2012. The main change in appearance of the Xiaomi sphygmomanometer this time is to replace the Apple interface with the mirco USB interface.
Physical parameters:
Base 3D: 115mm * 115mm * 66.5mm
Base weight: about 220g
Cuff range: 22cm-30cm, 30cm-42cm
Built in battery capacity: 400mAh
Medical parameters:
Blood pressure meter range: 0kPa~40kPa (0mmHg~300mmHg)
Display resolution: 0.133kPa (1mmHg)
Accuracy of pressure sensor: the maximum error of cuff pressure measurement at any measuring point in the range is ± 0.4kPa (± 3mmHg)
Pulse rate measurement range: 40 times/min~180 times/min
Pulse rate indication error: ± 5% for pulse rate value>60 (inclusive), ± 3 times/min for pulse rate value<60 (inclusive)
Compatible models: full range of Hongmi phones, and Xiaomi phones with Xiaomi 2s or above, and other Android phones are temporarily unavailable.
Unpacking and appearance
▲ The package of the sphygmomanometer is mainly orange and white, and there is a QR code on the side of the package for downloading the app.
▲ On the other side of the packing box is a list of compatible models, on which only red rice and red rice Note series are printed, but in fact, models above 2s millet can be adapted.
▲ The packaging structure is also divided into orange and white parts. The white part is a pure upper cover, and the orange part is equipped with accessories such as machines and cuffs.
▲ From left to right are instructions and instruction cards, sphygmomanometer host, charging line and cuff.
▲ The instruction manual has 15 pages, which is a little professional. It is probably the longest instruction manual among Xiaomi related products.
▲ The host part is a hemispherical body with a large gap cut, and the whole body is made of white polished material.
▲ The data interface rotates 180 degrees to adapt to models with different USB port directions. In addition, the data interface can also rotate up and down to meet the position requirements of different models. The front button is also an indicator light, but I haven't found any function problems with this button.
▲ The top of the sphere is the logo of the OEM iHealth.
▲ The left side is the sphygmomanometer pump body interface.
▲ The back is the power interface, which is rare.
▲ The corresponding power line interface is similar to mini DP interface in shape.
▲ At the bottom of the machine body are nameplates and silicone feet. It can be seen from the nameplate that the machine model is BP3 and the built-in battery capacity is 400mAh.
▲ The cuff suit is neatly folded into a bag, which is not small.
▲ Inside the cuff is a silicone tube connecting the air pump.
▲ The silicone tube looks very short, but the actual length is larger than my upper and lower arm length and (180 height), and the length is enough.
▲ The end of the silicone tube is a hard joint.
▲ Insert the base like this.
▲ Like the cuff of other sphygmomanometers, it is also fixed with nylon fasteners.
▲ The outer edge of the cuff is a description of the binding position, which needs to be worn 1-2cm above the socket. However, I have to complain that this kind of medical cuff is very wide in itself. Girls or elderly people with short upper arms can't wear it as a demonstration.
▲ The main body of the cuff is made of light blue nylon, which is lightweight, stain resistant and cost saving, but its hand feel is not as good as traditional flannelette.
▲ The other end of the silicone tube is connected to a silicone bag.
▲ The outline of the whole "air bag" can be seen under strong light. The sense of pressure when we measure blood pressure is caused by the pressure on the arm caused by the inflation of the air bag.
▲ After the mobile phone is plugged into the base, the sphygmomanometer can start working at any time.
working principle
The principles of the commercially available sphygmomanometers are mainly divided into two kinds: auditory diagnosis method and oscillographic amplification method; The latter is the method of using millet sphygmomanometer.
Principle of millet sphygmomanometer: in the process of cuff inflation and deflation, with the change of external pressure, specific shock waves will be generated inside the cuff air bag, and its amplitude has a relatively stable correlation with human blood pressure. After knowing the pressurization value of the machine, the bleeding pressure can be calculated.
Because both of them are indirect measurement methods, there will be 5-20% error compared with the direct measurement method. Of course, the accuracy of the direct measurement method has a price. It requires inserting a catheter into the blood vessel to measure. It's better to continue to be inaccurate
Operational use
Xiaomi sphygmomanometer needs an app called "Aijiakang", which can scan the QR code of the packaging box or download it from Xiaomi Market. But perhaps the cooperation time between the two companies is not enough, and the application cannot be logged in with the Xiaomi account. Instead, another account should be registered with the mobile phone number.
▲ The method of use is relatively simple. There are only three steps: connect the cuff and the console base - insert the mobile phone into the base - click measurement (please forgive the bad measurement environment in the office).
▲ The heart rate fluctuation chart can be seen during the measurement. The measurement takes about 30 seconds, and the cuff will go through three stages of "pre tightening tightening relaxing". Of course, the measurement results are the classic "high pressure, low pressure, heart rate" three, which will be displayed in different colors according to the data normality.
▲ The official app may be designed to take care of the elderly, with large default font and simple structure. Among the 3 functions of "blood pressure measurement, results viewing and family loving", the former has only one measurement button, while the last is just the communication records of family and friends (input the mobile phone number to add directly, without verification, which may have privacy problems).
▲ All the user's measurement results are displayed in the "View Results". You can click on care (similar to like), comment, or even set a check reminder for the other party.
▲ Click the result card to enter the details page, followed by four pages of information. The blood pressure range chart in the middle can directly see what the current blood pressure level is; The mood before measurement is a simple mood record (mood will affect blood pressure, and is more used to judge whether the result is available).
▲ There is also an interpretation report and pulse wave recording chart of the measurement process, which can be used to judge whether this measurement is available. If the fluctuation is abnormal, it should be that you did not sit well during the measurement (as shown in the right figure).
▲ At the end is the recent measurement trend chart and detailed measurement list. If you feel that there is a problem with this measurement, you can also delete the record (rather like "running for a minute if you are not satisfied").
Endurance and accuracy
The official endurance parameter is "three measurements a day, which can last for one month". Although it cannot be verified in one month, it has been measured for more than 70 times in two days in the evaluation room, but the power indicator light is still red, and the endurance performance is still excellent.
Of course, the power consumption components of the base are only the chip, air pump and indicator light, and the power consumption is not large. The 400mAh battery and the configuration without charging plug are also forgivable.
As for the most important accuracy of sphygmomanometer, the official long endorsement is: "Through the professional medical monitoring ESH2010 standard, and obtained the AAMI SP-10 standard from the American Association for the Advancement of Medical Instruments and the EN1060-4 standard certification proposed by the European Standardization Committee, the measurement accuracy was rated as: "Excellent".
The poor evaluation room had no money to buy medical equipment, and no dedicated editor used direct measurement to verify its accuracy, but its measurement results were basically consistent with the "hypotension report" in the author's previous physical examination, and its continuous measurement values were very stable.
With the pulse fluctuation curve, it can also eliminate the inaccuracy caused by many human actions and mood changes. Even if it fails to meet the official declaration of "more accurate measurement results than traditional sphygmomanometers", I'm afraid it should not be a problem to deal with daily life.
summary
The millet sphygmomanometer itself is a modified version of the old product of iHealth, which is mature in design. It is also easy to use. Although it is not as cool as the base cuff integrated sphygmomanometer, the way to connect the mobile phone is really "real" for the elderly.
The conventional cost performance route of Xiaomi is more "realistic", with the price jumping from more than 700 for iOS models to 199. Greatly reduce the threshold of impulsive consumption of the majority of hand cutting parties.
In fact, health equipment such as bracelets, body fat scales and sphygmomanometers are of little significance to normal people, and they are generally put aside after tasting and using them several times. I'm afraid their main purpose is to satisfy the vanity of "fat people in abandoned houses also love health" and give themselves an excuse for consumption.
So for people who are healthy, I still don't recommend buying. However, the sphygmomanometer is still important for chronic patients, and it is used frequently. A mature intelligent product can really improve the life experience, and "upgrade" can be considered.
