Patent ID: 8395363
Filing Date: 2013-03-12
Classification: A61B,H02M,H03K

Abstract:
1. A high-voltage generating circuit that drives a laser puncturing unit that oscillates laser light and punctures skin, the high-voltage generating circuit comprising: a capacitor that is charged with an electric charge and supplies power to the laser puncturing unit; a boost circuit that supplies a current to the capacitor; a voltage measurer that measures a voltage of the capacitor; and a controller that controls the boost circuit based on a command from a user or the voltage of the capacitor, wherein the controller controls the boost circuit to output a current of a first value into the capacitor to start a first stage charging operation at a first timing, and controls the boost circuit to output a current of a second value, higher than the first value, into the capacitor to start a second stage charging operation at a second timing, later than the first timing, and the capacitor is charged from a discharged-state to an amount of charge that is sufficient to drive the laser puncturing unit, through the first stage charging operation and the second stage charging operation.