Patent ID: 8480660

Claim:
An apparatus for the treatment of living tissue, comprising a treatment device for generating a pulsed laser radiation to be directed on to a target tissue; a detector device for detecting pressure amplitudes coming from the target tissue; an evaluation device for evaluating the pressure amplitudes detected by the detector device; and a control device for controlling the treatment radiation in dependence on the evaluated pressure amplitudes, wherein the evaluation device is adapted for evaluating a change of tissue condition in a second time interval Δt 2 which follows a first time interval Δt 1 in which no tissue change occurs at the target tissue, to determine a deviation of an averaged variation f(t) of the pressure amplitudes measured within the second time interval Δt 2 from a function a*m(t), wherein m(t) represents a previously known curvature characteristic of the averaged temporal variation f(t) of the pressure amplitudes measured during the first time interval Δt 1 and a is determined from the fit condition f(t) =a*m(t) of a fit procedure at the end of Δt 1 , to determine a moment in time t i at which the deviation reaches a given value, and in dependence on the determined moment in time t i , to predetermine treatment radiation parameters for a third time interval Δt 3 following the second time interval Δt 2 .