Laser modulation for coagulation

摘要

An apparatus has a pump module providing pump energy, a resonator and a controller. The resonator includes a gain medium receiving the pump energy from the pump module and producing light; reflective surfaces reflecting light produced by the gain medium back toward the gain medium; and a variable light attenuator receiving light produced by the gain medium. 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 emitted windows of pulses of laser light heat tissue to a temperature that causes coagulation without vaporization.

主权项

1. A medical laser system comprising:
a pump module providing a pump energy; a resonator comprising:
a gain medium receiving the pump energy and producing a light;at least two at least partially reflective surfaces reflecting the light produced by the gain medium back toward the gain medium;a variable light attenuator receiving the light produced by the gain medium; anda controller that provides a first driver signal to the variable light attenuator to control an amount of the light attenuated by the variable light attenuator such that the system emits a first laser light including a plurality of windows of laser light at spaced time intervals, each of the plurality of windows containing a plurality of pulses of laser light, wherein an interval between each of the plurality of windows is larger than an interval between each of the plurality of pulses, and each successive one of the plurality of pulses has a magnitude greater than a magnitude of a preceding one of the plurality of pulses.