Endoscopy is a medical endoscopic minimally invasive procedure

Endoscope is a kind of optical instrument, which is sent into the body through the natural cavity of the human body from the outside to examine the diseases in the body. It can directly observe the lesions in the internal cavity of the viscera, determine its location and scope, and take photos, biopsies or brush slices, which greatly improve the diagnostic accuracy of cancer and can carry out some treatments. Optical fiber endoscope uses optical fiber to transmit cold light source, the tube diameter is small, and can be bent, and the patient's pain is less. Endoscopy is widely used, such as gastroscopy for gastric cancer, bronchoscopy for lung cancer, tracheal cancer, esophagoscopy for esophageal cancer, sigmoidoscopy for rectal cancer, sigmoid colon cancer, cystoscopy for bladder cancer, laryngoscopy for throat cancer, nasopharyngoscopy for nasopharyngeal cancer, colposcopy for cervical cancer, vaginal cancer and so on. Along with the development of ultrasonic nondestructive testing technology and endoscopic technology, now endoscope measurement technology in industrial and medical fields such as the comprehensive use, for a long time, endoscope is used to "see", not "measure", along with the development of computer technology and image processing technology, now of the endoscope can achieve the advantages of its measuring technique. Whatever the electronic endoscope, the parts of the image can be observed must be clear, elegant, the current electronic endoscope gradually tend to adopt the second method to install the CCD, it increase the processing and the technology of CCD technically difficult, with continuous improvement and perfection of the electronic endoscope technology, high pixels CCD size will do more and more small, Various small diameter electronic endoscopes meet the clinical needs and can be involved in almost every field of medical treatment. At the same time, the emergence of some electronic endoscopes with special devices such as large aperture or double orifices and lift forceps, together with the development of a series of auxiliary instruments, has opened up a broad prospect for the application of minimally invasive surgery with electronic endoscopes in clinical practice. At present, some clinical diseases can be treated by endoscope or small incision instead of traditional surgery, greatly reducing the pain of patients.

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