What are the 3 most essential diagnostic equipment & products you should use?

The preliminary step of any healthcare treatment is diagnosis. Before a doctor prescribes medicines or writes the list of examinations that need to be done, it is his/her responsibility to run a basic diagnosis. And this is done based on studies done via special medical diagnostic equipment. For example, when you walk into a hospital to attend an appointment, you will be taken to a separate room where your vitals will be recorded. This will include blood pressure, oxygen concentration, pulse, and so on. 

Based on the data, the doctor will draw initial results like whether you are suffering from hypertensive issues or not, whether the oxygen concentration is within the normal range or not, and so on. Furthermore, with the recent pandemic hitting the entire world hard, it has become more important for every healthcare clinic or hospital to use these diagnostic instruments for running a basic check on the patients, regardless of whether the condition is critical or not. Hence, in this below article, we have listed down some of the best diagnostic equipment and explained their purpose, way of use, and some other aspects. 


Sphygmomanometer was introduced almost centuries back, which is why this particular device is still being used worldwide. In the early days, a simple physical device used for measuring pressure or tension was coupled with a technology that could study blood pressure by tracking heartbeats. There are two types of sphygmomanometers that you can get from a medical device manufacturing company

  1. Mercury-based sphygmomanometer: This is a special device where the air is pumped into the arm cuff. Based on the pressure generated, mercury is made to rise along a thin capillary. Based on the sounds heard via stethoscopes, the BP is recorded based on the mercury level. 
  2. Gauge-based sphygmomanometer: The most used blood pressure monitoring device consists of an arm cuff, a gauge, and a special dial with a pointer and a calibrated scale. Air is pumped slowly, which inflates the cuff, thereby constricting the artery. In the meantime, as air is pumped, the pointer will move slowly towards the higher scale value. 

Only the way of working and design are different between these two types of sphygmomanometers. However, the way of examination is the same. Air is pumped till the pointer/mercury level crosses 120. During this time, the medical professional will focus on hearing the first peak. That particular value marks the systolic pressure. Once this is heard, the air is released, which will slowly decrease the sound, and consequently, the pointer will start returning to its neutral state. The scale value where the sound stops is marked as the diastolic pressure. 

Pulse oximetry 

For measuring the oxygen concentration and the pulse rate, the oximeter is used. Unlike other devices, it’s a non-evasive device that records the value once you attach this clip-like device to your fingers. It will then measure the oxygen concentration and display the results based on the total amount of oxygen your tissues are receiving from the blood. 

Small light beams will pass through when you attach the device to your finger and switch it on. Your blood will absorb the light energy based on the amount of oxygen present. Hence, the sensor present at the opposite end will receive light beams in a lesser number than what was generated at the beginning. It is the difference in the values that will be displayed on the screen. 

A pulse oximeter can help the doctors evaluate a series of medical conditions, like: 

  • Whether the patient needs a ventilator or not, and if someone is already on the ventilator, then the oximeter will determine if it’s working or not.
  • If a patient has any past health problem related to cardiology, an oximeter will help the doctors study whether oxygen is being distributed properly or not.
  • Sleep apnea and its effect on the body also can be known by studying the oxygen concentration displayed on the pulse oximeter screen. 

Non-contact IR thermometer

In the light of the pandemic, every hospital, workplace, mall, and other are using the no-contact IR thermometer. Unlike the normal thermometers, these are not brought in contact with any person, which is why it’s best for preventing contamination or keeping the space much healthier and safe. Furthermore, it is more accurate than mercury thermometers, which is why the device has become immensely popular. 

IR or infrared radiations are used for measuring the body temperature of any living organism. Here, the person’s body will emit infrared radiations due to heat which are then made to travel through a lens that converges the rays and focuses on a thermopile. The light energy of these EMW waves will then be converted into heat and fed to a circuit where the output voltage will be read to display the results. 


These three are the most commonly used medical devices to check the patient’s vitals and determine the initial diagnosis that will help the doctor understand the superficial cause of a health problem. Even though these devices are available in a top-rated quality, it is important to choose those accurately calibrated, have a higher range of value to fit different needs, and are also easy to use. After all, these vitals are essential to detect whether a person has any hidden abnormality or not. Hence, you should look for calibrated devices, have wonderful reviews, and come with the best features.