A method for optimizing irradiation of a target with laser radiation, a method for radioactively treating a target with laser radiation, and a medical laser system for treating tissue with a laser beam

摘要

And more particularly to a method of optimizing irradiation of a target by laser radiation, wherein the laser radiation is associated with a laser radiation delivery apparatus, said laser radiation being transmitted to said target by one of a waveguide or an optical fiber, Each of which is spaced from the target, a space between the distal delivering portion of the guide and the target is occupied by a liquid medium, the laser radiation being absorbed at least partially into the liquid medium, The at least one pulse train having a first laser pulse and a second laser pulse, wherein the at least one pulse train is transmitted along an optical path in at least one successive laser pulse of the wavelength, Waveguides or fiber optics used to illuminate the target A step of mounting on said selected laser radiation delivery device; Selecting at least the following parameters: selecting the total energy of at least one train of pulses to be delivered to the target, and selecting a distance from the distal delivering portion to the target; Further comprising a control for controlling the laser radiation transmission device and for selecting the total energy delivered by the laser radiation delivery device and selecting a distance from the distal emission portion to the target; Initiating irradiation of the target with respect to the at least one pulse train by generating the first laser pulse with energy (Ei) sufficient to form a vapor bubble in the liquid medium at the terminal emitter; Causing the formed vapor bubbles to expand in an amount sufficient to displace a substantial portion of the liquid medium from a space between the distal delivery portion and the target; Thereafter, the formed vapor bubble generates the second laser pulse Ep after the selected time delay Td sufficient to reach the optimal range, and the second laser pulse is delivered to the target via the formed vapor bubble Minimizing the laser radiation absorbed by the liquid medium and optimizing the laser radiation reaching the target; Wherein the control further comprises a memory comprising a look-up table, the look-up table comprising a plurality of parameters including Ei, Ep and Td, selecting the waveguide or fiber type, ; And selecting a distance from the terminal dispatcher to the target causes the controller to access the lookup table to select a corresponding parameter for Ei, Ep and Td, To generate and transmit laser radiation having the selected parameters to the target.