Patent ID: 8926678
Filing Date: 2015-01-06
Classification: A61B,A61N

Abstract:
1. A handpiece of a laser treatment device, comprising: an optical fiber which is configured to guide laser light emitted from a pulse light source; and a revolving holder which is configured to hold a tip portion of the optical fiber such that the tip portion is tilted with respect to a rotational axis to direct an optical axis of the laser light towards a target point located on the rotational axis, the revolving holder revolving the tip portion of the optical fiber about the rotational axis, wherein an irradiation pattern of the pulse light source is adjusted by a control unit; the revolving holder is controlled by the control unit so that a number of revolutions of the tip portion of the optical fiber per unit time is adjusted; and the control unit is configured to determine a pulse number of the pulse light source per unit time and the number of revolutions of the tip portion of the optical fiber per unit time such that the pulse number of the pulse light source per unit time is not an integral multiple of the number of revolutions of the tip portion of the optical fiber per unit time.