Endoscope is a commonly used medical instrument. It enters the human body through a natural orifice or a small incision made by surgery. When it is used, the endoscope is introduced into the organs to be examined, and the changes of the relevant parts can be directly observed. Next, the maintenance personnel of endoscope equipment will talk about the classification, structure and function of endoscope equipment.
(1) Brain endoscope
(5) General endoscope of upper digestive tract
(10) Small intestine endoscope
(11) Large intestine endoscope
Clinically, the endoscope can be classified according to whether it can change its direction: it is divided into two types: rigid mirror and elastic soft mirror. The main body of rigid mirror can not be bent or twisted. It mainly enters the sterile tissues and organs of human body or enters the sterile cavity of human body through surgical incision, such as laparoscope, arthroscope, intervertebral disc mirror, etc. The body of the soft mirror is flexible and flexible, mainly through the natural cavity of the human body to complete detection, diagnosis and treatment, such as gastroscope, enteroscope, laryngoscope, etc.
It is classified according to the location of the endoscope: otorhinoscope, oral endoscope, dental endoscope, neuroscope, urethrocystoscope, ureteroscope, nephroscope, electroscope, laparoscopy, arthroscope, intravascular endoscope, sinusoscope, laryngoscope, etc.
The key technologies of medical endoscope mainly include image acquisition, image post-processing and lighting mode.
Image acquisition system is generally composed of imaging lens, micro image sensor, acquisition and processing circuit, etc. Among them, image sensor is a sensor that senses optical image information and converts it into usable output signal. It is an important part of digital camera. It can be divided into charge coupled device (CCD) and metal oxide semiconductor device (CMOS). Compared with CCD, CMOS has the advantages of small size, low power consumption, low cost and high system integration. CCD technology is monopolized by Japanese enterprises, and CMOS has a small gap at home and abroad, and is expected to replace CCD.
Image post-processing: noise reduction algorithm plays a key role in improving image quality, helping to solve the problem of motion blur; In addition, edge enhancement is also a very important image processing technology, which can help doctors more comprehensively view abnormal phenomena in tissues, such as generating blood vessel views with strong contrast, improving the view quality of tissue texture images and mucosal surface images.
The restoration of lighting color is directly related to the performance of the whole endoscope. The light unit is usually composed of xenon lamp or metal halide bulb, mainly composed of power electronic system. If you have any questions about endoscope, please consult us Come on!