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目的:探讨一种新的脂肪抽吸术模拟训练系统在医学生吸脂术教学中的应用效果。方法:2019年12月至2020年1月，选择北京协和医学院在读的无吸脂术手术基础的医学研究生30名(男18名，女12名，年龄22～30岁)，应用抽签法随机分为2组，每组15名。传统培训组，接受教师授课后，受训者在仿真人体模型上训练操作，教师在一旁通过讲解示范对受训者进行动作纠正；模拟训练系统组，接受教师授课后，受训者在仿真人体模型上操作训练，通过模拟训练系统的实时反馈对受训者进行动作纠正。培训开始前和培训结束后分别要求2组受训者在模拟训练系统上进行吸脂术模拟操作测试，记录2组的吸脂针阻力、吸脂针加速度和手术均匀程度，分别比较2组受训者培训前、后的差异。使用R 3.5软件和Python 3.7软件分析数据。符合正态分布或近似正态分布的计量资料以n ±n s表示，应用n t检验进行统计分析；不符合正态分布的计量资料以n M(n P25，n P75)表示，应用Wilcoxon符号秩检验或Wilcoxon秩和检验进行统计分析，n P<0.05为差异具有统计学意义。n 结果:训练后，传统培训组受训者的手术区域分布较训练前更居中：训练前、后手术区域分布偏度分别为-0.22(-0.38，-0.14)和-0.07(-0.24，0.02)(n V＝20，n P＝0.022)；峰度分别为2.32(2.09，2.58)和1.96(1.90，2.00)(n V＝112，n P＝0.002)。训练后，模拟训练系统组受训者的侧向阻力超阈值次数较训练前显著减少[7.0(3.5，13.5)次vs. 0(0，0)次(n V＝111.5，n P＝0.004)]，加速度超阈值次数亦显著减少[7.0(5.0，17.5)次vs. 3.0(2.0，12.5)次(n V＝102，n P＝0.002)]；手术覆盖角度显著提高[131.18°(117.71°，137.88°) vs. 169.89°(162.96°，180.00°) (n V＝0，n P<0.001)]；手术区域分布更居中、更均匀[偏度-0.17(-0.33，0.03) vs. -0.01(-0.13，0.06)(n V＝21，n P＝0.026)，峰度2.35(2.08，2.50) vs. 1.94(1.83，2.00)(n V＝118，n P<0.001)]。模拟训练系统组与传统培训组比较，在侧向阻力超阈值次数[(-7.5±7.4)次vs. (-1.4±9.0)次(n t＝111.5、n P＝0.026)]、加速度超阈值次数[-3(-6.5, -2.0)次vs. -1.0(-4.0，2.0)次(n W＝156.5、n P＝0.035)]、手术覆盖角度[(-40.24±18.88)° vs. (-11.10±25.54)°(n t＝3.553、n P<0.001)] 3个指标的提升上，显著优于后者。n 结论:脂肪抽吸术模拟训练系统是脂肪抽吸术有效的模拟训练方式，能有效提升受训者技能水平。“,”Objective:To introduce an innovative simulation training system of liposuction and compare the effect of the traditional training method with this system in the liposuction training for medical students.Methods:Thirty medical postgraduates (18 males and 12 females, aged 22 to 30 years) at Peking Union Medical College without liposuction experiences were selected. All the participants were randomly divided into two groups. In the traditional training group, the trainees were trained on the phantom, while the teachers gave explanations and demonstrations. In the simulation training system group, the trainees were trained by themselves on the simulation training system. Before and after the training, the two groups were required to perform a liposuction simulation test on the simulated training system. The resistance of liposuction cannula, the acceleration of liposuction cannula and the uniformity degree of operation of the two groups were recorded, and the differences in the training effects between the two groups were compared. R 3.5 and Python 3.7 were used for analysis. Application of the n t test for measurement data was in accordance with normal distribution, and the results were expressed as Mean±SD deviation. Application of Wilcoxon signed-rank test or Wilcoxon rank sum test for the measurement data did not conform to the normal distribution. The results were expressed as n M(n P25, n P75). n P< 0.05 indicated statistical differences.n Results:After the training, the area of liposuction in the traditional training group was more moderate than that before the training [skewness: -0.22(-0.38, -0.14) vs. -0.07(-0.24, 0.02)(n V=20, n P=0.022); kurtosis: 2.32(2.09, 2.58) vs. 1.96(1.90, 2.00)(n V=112, n P=0.002)]. After training, the number of times of lateral resistance[7.0(3.5, 13.5) vs. 0(0, 0)(n V=111.5, n P=0.004)] and acceleration [7.0(5.0, 17.5) vs. 3.0(2.0, 12.5)(n V=102, n P=0.002)] over-threshold were significantly reduced, the angle of liposuction coverage [131.18°(117.71°, 137.88°) vs. 169.89°(162.96°, 180.00°)(n V=0, n P<0.001)] was significantly improved, and the area of liposuction [skewness: -0.17(-0.33, 0.03) vs. -0.01(-0.13, 0.06)(n V=21, n P=0.026); kurtosis: 2.35(2.08, 2.50) vs. 1.94(1.83, 2.00)(n V=118, n P<0.001)] was more evenly distributed. The differences before and after training were analyzed between the simulation training system group and the traditional training group. The simulation training system group was superior to the traditional training group in the number of times of lateral resistance[-7.5±7.4 vs.-1.4±9.0 (n t=111.5, n P=0.026)], the number of times of acceleration [-3.0(-6.5, -2.0) vs. -1.0(-4.0, 2.0)(n W=156.5, n P=0.035)] and the angle of coverage[(-40.24±18.88)° vs. (-11.10±25.54)° (n t=3.553, n P<0.001)].n Conclusions:Simulation training system is an effective method in liposuction training to enhance the skills of trainees.