An endoscope system and method for detecting contact of tip of endoscope with tissue

Abstract

According to the endoscope system and the method for detecting the contact between the tail end of the endoscope and the tissue, the gain and exposure time of the video stream are controlled, so thatthe current brightness of the video stream is within the target brightness range, and the distance between the tail end of the endoscope and the tissue is measured; when the distance between the tailend of the endoscope and the target tissue is smaller than a preset distance, contact early warning is sent out, contact judgment is triggered, and when it is detected that the change rate of the ratio of the current brightness to the exposure amount is smaller than a threshold value, texture feature information of the target tissue before and after the output light power is increased is extractedand compared; and whether the tail end of the endoscope is in contact with the target tissue or not is judged. According to the endoscope system, whether the tail end of the endoscope makes contact with the target tissue or not is judged by comparing the change conditions of the texture feature information of the target tissue before and after the output light power is increased, the contact prompt accuracy is improved, and damage to the tissue in the target tissue detection process by the endoscope is effectively avoided.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an endoscope system and a method for detecting the contact between the end of the endoscope and tissue. Background technique [0002] With the continuous development of medical technology, endoscopes, as a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software, have become more and more widely used. The endoscope can enter the body of the subject to be detected (such as the esophagus) to obtain images of the part to be detected, and then determine whether there is a lesion in the part to be detected. The endoscope can be used to see lesions that cannot be seen on X-rays, so it is very useful for doctors. For example, with the help of an endoscope, doctors can observe ulcers or tumors in the stomach and formulate the best treatment plan accordingly. [0003] When using an endoscope for inspection,...

AI Technical Summary

Problems solved by technology

In the prior art, it is mainly to detect whether the endoscope touches the tissue by controlling the automatic exposure and the optical power of the illumination source. However, due to the translucent characteristics of human tissue, this detection method is prone to misjudgment

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