2A1-A21 広圧排面を備えた屈曲型小腸圧排リトラクタの試作

抄録

We successfully developed a new flexing retractor that allows stably manipulating small intestines with large contact areas in laparoscopic surgeries. The retractor in thin bar easily going into the coelom from the outside through a trocar with diameter of 12[mm] allows to spread to a palm-sized plane with contact areas of 150^*70[mm] in the abdominal cavity. In addition, it can be flexed to 60[deg] maximum whichever spread or unspread, helping surgeons intuitively move intestines in the desired direction. In vivo experiments indicating that the retractor is superior to a flexing retractor with a small-area contact and an unflexible retractor with large-area contact in terms of both time required to move away and number of failures to retract small intestines confirm the effectiveness of the developed retractor.