Needle assembly for biopsy to reduce starting load of a motor when the rotation direction of the motor is changed

摘要

The present invention relates to a needle assembly for biopsy. When a motor operates to move forward/backward while rotating a cutter, motor rotation is stopped, and an instantaneous load is reduced at the same time during an initial operation, so that an inrush (starting) load of the motor can be reduced. Therefore, the needle assembly for biopsy reduces vibration and noise during a procedure and minimizes irritation on an affected area.