| Cardiovascular interventional surgery have a high request for the doctor’s surgicalexperience and skills, and make it necessary to attend surgery training before becomingqualified doctors. Virtual cardiovascular interventional operation system can offerreal-time interaction effect of force and motion perception, thus rapidly improvingtraining staff’s skills and greatly shortening the cycle of operation training. It is animportant development trend in the field of medical application.Firstly, this paper comprehensively analyzed the research status of virtualcardiovascular interventional system and the theoretical foundation of the forceinteraction technology. The author introduced the general structure of the forceinteraction device. Force perception is crucial for cardiovascular interventionalprocedures; therefore force interaction technology is the key technology of virtualsurgery software.Secondly, this paper finished the control strategy design of force interactionmechanism, using Visual C++to complete the control program of drive motors andimplementing data communication between control program and virtual realitysoftware. At the same time, the author made out stepping motor protection circuit, inorder to limit position of motors and ensure the safe operation of the equipment.Thirdly, the finite element simulation was carried out on the force interactivemechanism, which analyzed the strain and stress distribution of force interactivemechanism. The simulation result could provide theoretical basis for forcemeasurement strategy and help the author choose appropriate measurement componentsto design force measurement scheme.Finally, this paper completed the system integration and accuracy verification ofvirtual surgery system, and designed the experimental operation training interaction.Through the actual operation of training personnel, the author verified the feasibility ofvirtual surgery training. |
