| abstract |
A laser device ( 10 ) for ablating a biological tissue ( 1 ), comprising: a) a laser source ( 7 ) that is configured to emit a laser beam ( 4 ); b) optics ( 8 a, 8 b, 8 x ) configured to modify the laser beam ( 4 ) such as to direct the laser beam ( 4 ) on the biological tissue ( 1 ); d) a controller ( 11 ) that is configured to control the laser source ( 7 ) to emit the laser beam ( 4 ) to create an ablation in biological tissue ( 1 ), whereby e) a sensor ( 19 ) being configured to receive back scattered light from the biological tissue ( 1 ); f) a tissue controller ( 18 ) that is operationally coupled to the sensor ( 19 ) to receive a sensor signal (Ri) of the sensor ( 19 ); and g) the tissue controller ( 18 ) being configured to compare a series of at least two consecutive sensor signals (R 1 , R 2 , R 3 , . . . ) and being configured to generate a tissue control signal (TCS) when the value of the series of consecutive sensor signals (R 1 , R 2 , R 3 , . . . ) decreases in a predetermined amount. |