| 摘要 |
A surgical positioning assembly for use with a surgical instrument which has an elongated shaft defining a longitudinal axis, for example a minimally invasive surgical instrument. The positioning assembly comprises: a base member comprising a skin contact surface, wherein the base member defines an opening for the elongated shaft; a rotating assembly configured to rotate relative to the base member about a rotation point located below the skin contact surface wherein the rotating assembly defines an opening for the elongated shaft; and a locking mechanism for locking the position of the positioning assembly on the elongated shaft and for locking the orientation of the rotating assembly relative to the base member. In use, the elongated shaft of the surgical instrument will exert stress on the abdominal wall as the shaft is moved relative to abdominal wall. It has been found that the stress on the abdominal wall is reduced if the rotation point is below the skin of the patent. As a further benefit the reduced stress allows easier movement of the surgical instrument. |
