Transmitting power of ultrasonic probe

It is safe for ultrasonic probe to emit less than 3MW per unit area.

Waterproof function

See if the ultrasonic probe has waterproof function. Without waterproof function, ultrasonic cream and sweat will flow into the probe and cause internal short circuit, and bacterial growth will cause infection to pregnant women. A fetal heart without waterproof function is definitely not a safe fetal heart.

Probe emission frequency

See if the transmitting frequency of the probe is below 2MHZ. This frequency probe can detect the fetal heart around 1 1 week.

class monitor

See if it's a display. With the display screen, the fetal heart can be displayed directly on it, and the fetal health can be reflected more quickly and accurately without calculating the fetal heart sound.

battery

See if the battery is lithium. Lithium battery has stable power supply, no noise, no infrasound and low cost. If you use ordinary batteries, a pregnancy will cost almost 300 yuan.

Complete the document

See if the documents are complete, such as medical device production license, product registration certificate, international ce certification, quality system 13485 certification, etc. Only when the documents are complete, the regular company is a qualified product.