Patent ID: 9192442
Filing Date: 2015-11-24
Classification: A61B,H01S

Abstract:
1. A controller for a laser system comprising: a driver configured to produce a driver signal, the driver having an input for turning the driver signal on and off, the driver signal such that when the driver signal is on a variable light attenuator attenuates more light than when the driver signal is off; and a timer, coupled to the input of the driver for turning the driver signal on and off and applying a timer signal on the input of the driver for turning the driver signal on and off, the timer providing a cyclical timer signal in a first mode of operation and a static timer signal in a second mode of operation, the timer having a frequency input that defines the frequency of the cyclical timer signal and a duration input that defines a length of time that the timer signal turns the driver signal off during the cyclical timer signal, wherein the controller controls the amount of light attenuated by the variable light attenuator such that the apparatus emits windows of pulses of laser light at spaced time intervals, each window containing a plurality of pulses of laser light and each interval between windows being larger than an interval between pulses within a window, the duration of the windows and the duration of the intervals between windows being such that the emitted windows of pulses of laser light heat tissue to a temperature that causes coagulation.