Controlled Photomechanical and Photothermal Tissue Treatment in the Picosecond Regime

摘要

Systems and methods for treating tissue by concentrating a laser emission to at least one depth at a fluence sufficient to create an ablation volume in at least a portion of the target tissue and controlling pulse width within the picosecond regime to provide a desired mechanical pressure in the form of shock waves and/or pressure waves.

主权项

1. A system for tissue treatment, comprising:
an optical system having at least one foci for concentrating a laser emission to at least one target at a depth in the tissue at a fluence ranging from about 0.8 J/cm2 to about 50 J/cm2, the fluence selected to exceed an electron ionization threshold of the target to result in an ablation volume of at least a portion of the target; and a laser emitting a pulse width within the range of from about 260 picoseconds to about 900 picoseconds, the pulse width is selected to control a pressure wave emission from the ablation volume to tissue adjacent the target.