Mechanical System of Spinal Needle Puncture Test

The inconsistency of needle visibility in spinal needle puncture requires accuracy in spinal needle positioning based on the angle and depth of the spinal needle. A tool is made to replicate spinal needle puncture with angle and depth parameters. The tool can move in 3-DOF, namely axial, lateral, and elevation as well as angles to the axial and lateral, which is called linear movement. And the tool can move based on an angle which is called angular movement. The movement of the system is done by stepper motor, servo motor, leadscrew, nut. Testing distances and angles based on a comparison of input values with actual values produces an accuracy value of 99%.