Methods To get a serrulated suture by making many tiny serrate which slant towards the center in two ends of a special suture.

• 方法:将两端具有细微的、向中央倾斜的锯齿状缝线,通过含有针芯的穿刺导引针,置于皮下,治疗面部松弛者168例,观察临床效果。