| 摘要 |
<p>Provided is a therapeutic tool gripping device for a handpiece. Said device absorbs vibration well while gripping a therapeutic tool firmly. The provided therapeutic tool gripping device has a rotatably provided spindle (18) and a coil spring (28) that is provided inside the spindle (18) and rotates together with the spindle (18). The therapeutic tool gripping device grips a therapeutic tool, which is inserted into the coil spring (28) from the tip of the spindle (18), using the inside surface of a grip section of the coil spring (28). The coil spring (28) is formed so as to have an indeterminate natural frequency. Preferably, the coil spring (28) has a grip section (281) in the middle region thereof and is formed so that the inside diameter of the grip section (281) is less than that of other sections.</p> |
