Lumbar puncture auxiliary positioner and device for para-median approach

The lumbar puncture auxiliary positioner comprises a positioning bottom plate, an adjusting plate, a height adjusting mechanism and an angle measuring mechanism, the adjusting plate is arranged above the positioning bottom plate in parallel through the height adjusting mechanism, the height of the adjusting plate can be adjusted, a first through hole is formed in the positioning bottom plate, and a second through hole is formed in the angle measuring mechanism. A second through hole is formed in the adjusting plate, and the first through hole and the second through hole are coaxially formed; an angle measuring mechanism is fixed above the second through hole, the adjusting plate is located at the initial position, the center point of the angle measuring mechanism coincides with the circle center of the first through hole, and the center point of the angle measuring mechanism moves on the axis along with the change of the height of the adjusting plate. The utility model further provides a device for improving