Офтальмологический прибор для анализа глаз, ультразвуковой сканер A B

RetiWave1000 ophthalmic AB ultrasound diagnostic instrument is a complete ultrasound system, which has the following basic functions:

1. A super function is the measurement of eye axis length.

2.B ultrasonic function is fan scan.

1. IOL calculation function USES 6 formulas to calculate the artificial crystal.

A super wave is the abbreviation of type A ultrasonic wave. It is used to detect the echo of sound wave according to the relation between time and amplitude of sound wave. Its positioning accuracy is relatively high. When ultrasound beam spread in the body's tissues to meet different acoustic impedance of the two layers of adjacent dielectric interface, produce reflection echo on the interface, each interface, generate an echo, the echo on the oscilloscope screen in the form of wave, according to the acoustic impedance of interface on both sides of the medium range, the echo amplitude is higher; On the contrary, the smaller the acoustic impedance difference is, the lower the echo amplitude is. If the ultrasonic wave propagates in homogeneous medium without interface, that is, when the acoustic impedance difference is zero, it will present a flat section without echo. The echo is arranged on the baseline in the form of wave peak according to the return time. The higher the echo, the higher the wave peak. The formation of one-dimensional images by a-mode ultrasound is difficult to explain the pathological changes, but has A high ability of tissue discrimination. A has high super axial resolution and can display the length of eye axis by LCD digital. The working principle of b-mode ultrasonic instrument is basically the same as a-mode ultrasound instrument. It is by sending a group of ultrasonic waves to the human body, scanning in a certain direction, judging the distance and nature of human tissue according to the extension time and intensity of monitoring its echo, and then forming intuitive two-dimensional ultrasonic images through electronic circuits and computer processing. Generally, the working process is as follows: when the probe receives the excitation pulse, it will transmit ultrasonic waves (at the same time, the probe is controlled by the focusing delay circuit to realize acoustic focusing of sound waves), and then receive the reflected echo signals after a period of delay. The echo signal received by the probe is processed by filtering, logarithmic amplification, etc., then digital signal is transformed by DSC circuit to form digital signal, further image processing is carried out under the control of CPU, and then sent to the display to form b-mode image.

Shanghai Top View Industral Co,. Ltd, Our company was established in 2008, headquartered in Shanghai, China. We are committed to providing ophthalmologists and optometrists with high quality products, high quality technologies and high quality services for medical fields, helping doctors improve health conditions and alleviating the pain of patients. We also specialize in glasses and lens equipment as a brand name distributor.