The jumping curve injects vitality into the equipment and breaks the dull feeling of medical equipment. Streamlined appearance and knob design enhance the overall affinity and reduce the resistance of patients. Grasp every shape and use exquisite details to enhance the high-end sensory experience of the equipment. The buckle is equipped with an arrow indicating the twisting direction. The keys are raised for blind pressing. Round the shape and details to weaken the bloated feeling brought by metal. The buckle is integrated to reduce the physical damage caused by the sub key. The peripheral gear design increases its friction. The stressed convex part is placed on the right side, which can be unlocked with one hand (when used with the right hand) or with both hands. The integrated shape processing, the lower concave convex change conforms to the hand holding posture, and the slightly contracted tail shape can reduce the fatigue when holding.