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Background: Among the core components of Medical Equipment, the Medical Endoscope is the core functional component of medical equipment, which has become the key research around the world. Objective: By comparing and discussing the patents of the medical endoscope, some valuable conclusions have been drawn to predict the future research and development of the Medical Endoscope. Methods: By analyzing the patent features of the medical endoscope in the mechanical structure, image display, and endoscope system, the function of the medical endoscope on the detection of human internal tissues has been explained. In combination with the key technology of the Medical Endoscope, patents related to the medical endoscope have been studied. Results: With the rapid development of technology in the medical industry and the need for practical applications, there is an increase in the requirements for medical endoscopes. Medical endoscopes have carried out a lot of innovations in mechanical structure, image imaging, and endoscope systems. By comparing the characteristics of various patents of medical endoscopes, the main problems of current medical endoscopes, such as complicated structure and poor lighting imaging effect, are analyzed and summarized. The further development trend of medical endoscopes has also been discussed. Conclusion: By improving and optimizing the mechanical structure of the medical endoscope, the lighting method and the three directions of the system, the performance of the medical endoscope can be improved, the loopholes in the current technology can be solved, and it will be more practical.

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Background: Corn harvesting is an important part of the entire corn production process. Corn harvester power, turning radius and dehulling device will directly affect harvest efficiency and the quality of harvested corn. Obtaining better performance peeling device with strong power and minimum turning radius is the research direction in this field. Objective: This paper summarizes the patents of the walking system of corn harvesters at home and abroad in recent years, and introduces the characteristics and development of knapsack harvesters, trailed harvesters and self-propelled harvesters, such as power, turning radius and artificial intelligence. summarize its development trend, and provide reference for the development of various aspects of crop harvester. Methods: This paper reviewed the research status of the corn harvester walking system in recent years, and discussed the structure types and applications of various harvester walking systems. Results: By summarizing the patents of the walking system of the corn harvester, this paper obtains the current patent application status, analyzes the main problems in its development, and discusses the problems existing in the walking system of the harvester and the future research direction. Conclusion: The running device of the existing harvester needs to be further improved in terms of reliability, power system, turning radius, etc. The patent of the walking device of the harvester is yet to be developed. With the application of GPS, sensing and detection, information processing, automatic control and other technologies in the field of harvesting, the mechanized corn harvesting is gradually developing towards intelligence and automation.