医疗器械板块1月14日涨0.66%，三友医疗领涨，主力资金净流出4.28亿元

Group 1 - The medical device sector increased by 0.66% on January 14, with Sanyou Medical leading the gains [1] - The Shanghai Composite Index closed at 4126.09, down 0.31%, while the Shenzhen Component Index closed at 14248.6, up 0.56% [1] - Notable gainers in the medical device sector included Sanyou Medical, which rose by 16.63% to a closing price of 22.30, and Tianzhihang, which increased by 13.25% to 24.95 [1] Group 2 - The medical device sector experienced a net outflow of 428 million yuan from institutional investors and 495 million yuan from retail investors, while retail investors saw a net inflow of 923 million yuan [2] - The individual stock fund flow data indicated that Yuyue Medical had a net inflow of 356 million yuan from institutional investors, while it faced a net outflow of 66.06 million yuan from retail investors [3] - Other companies like Yingke Medical and Weili Medical also showed significant net inflows from institutional investors, with 105 million yuan and 90.06 million yuan respectively [3]