Objective To explore the research focus and current status of saturation diving in China by bibliometric method,so as to provide reference for the development of saturation diving.Methods With the subject term of"saturation diving",the relevant literatures were retrieved from China National Knowledge Infrastructure(CNKI),VIP,Wanfang,and Chinese biomedical literature database.NoteExpress software was used to remove repetitive literatures.Results A total of 306 literatures were included,which were published in 90 journals.The journals with more publications were Chinese Journal of Nautical Medicine and Hyperbaric Medicine,Journal of Navy Medicine,and Chinese Journal of Applied Physiology,etc.A total of 501 keywords were used 1 716 times.Visual analysis revealed that the hotspot keywords were saturation diving,simulation experiments,animal experiments,patrol diving,helium oxygen saturation diving,saturation diving systems,and ternary gas mixtures.There were 55 keywords with word frequency≥4,forming 5 meaningful clusters.Research hotspots focused on saturation diving equipment,saturation diving support system,physiological function,medical support and so on.Conclusion The development of saturation diving in China is driven by important events.Technological breakthroughs depend heavily on the contribution of military scientific research.However,experimental research achievements are far more than applied practice.In the future,saturation diving experiment chamber with larger simulation depth should be built,saturation diving system with stronger practical performance should be developed,and the training of saturation divers and medical support personnel should be increased,so as to improve the operation technique and level of saturation diving in China.

During long-duration space missions,astronauts face health challenges such as bone density loss,muscle atrophy,cardiovascular dysfunction,immune function suppression caused by microgravity,as well as mental health issues in a confined environment.There is an urgent need for real-time,continuous,and multi-dimensional health monitoring technologies to safeguard the health and safety of astronauts.This paper systematically reviews the technical requirements and current development status of astronaut on-orbit health monitoring,with a focus on analyzing breakthroughs in technologies such as dynamic electrocardiography,non-invasive blood pressure assessment,flexible electronic skin,and molecular probe spectroscopy.It also elaborates on how the integration of artificial intelligence and bionics technologies is propelling the monitoring system towards intelligence and autonomy,providing a reference for the medical support of astronauts during long-duration spaceflight missions.