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1. Design and simulation of minimally invasive medical apparatus and instruments.
Structure design and manufacturing of miniature precision apparatus (including stenting, catheter, and surgical instruments): The design process of parts is accelerated by using 3D software designing platform. With the help of software simulation function, quality standard can be improved through analyzing the rationality of the design before the components are manufactured.
Dynamics simulation, finite element analysis and optimization of minimally invasive devices: Based on flexible body dynamics, multibody dynamics theory, and by using virtual prototype technology to simulate the mechanical properties, and finite element analysis, the mechanical, electrical, and thermal properties of various structures are analyzed under specific load conditions to explore the distribution of its corresponding structure field, electric field, and the temperature filed. By analyzing the rationality of structural design, the optimization of the structure of design can be achieved.
Human factors engineering in designing minimally invasive instruments: When product models are made, tests are carried out to evaluate its performances in terms of using environment, range of application, ease of operation, user-friendliness, minimum fatigue damage, etc. so as to predict problems that may occur when the product is being used. The reliability and feasibility of the human-machine-environment can be confirmed further.
2. Technology of targeting delivery and precise control of energy.
Detecting techniques of bioelectrical impedance and temperature adaption: The application of electrosurgical knife with accurate adaptive power control can improve the tissue cutting effect, reduce the thermal damage to the tissues and organs, shorten the operation time, and ensure the security of minimally invasive surgeries. The detection technique amplifies self-adaptability of the signal through automatically measuring the contact resistance of electronic scalpel polar and skin tissue. The resistance, as the feedback measurement, therefore automatically controls the output power and satisfies the demand for outputting the exact power when applied in different body tissues.
In the application of high-frequency surgery apparatus, when the temperature for treating tissue is too high, i.e. the temperature detested in the target tissue region is over 120ºC, it is most likely to carbonize the tissue and produce smelly smog. Adaptive detection of temperature can detect the real-time temperature at the target region and cut off the energy output when the temperature exceeds the safety limit.
3. R& D of modern precision medical devices and testing.
On the basis of new technologies and materials of machinery, electronics, optics, biology, computers, and sensors, we are undertaking research on designing modern precision medical devices that embody the integration of medical science and engineering, and mechanical-electrical integration, testing and evaluating medical devices, product quality accreditation service, electromagnetic compatibility standards making and testing, supervision and management of medical devices, clinical engineering, etc. It plays an important role in improving the level of clinical diagnosis and treatment, and optimizing health care services.
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