| 摘要 |
<p>A laser emitting on the wavelength of 9.6 νm is used for the surgery of hard tissue, particularly calcified tissue portions. A CO2-laser is particularly convenient and comprises in its resonator a second gas container (5) wherein a vacuum may optionally be made by means of a pump (8) or which may be filled through a valve (9) with a selective absorption gas on 10.6 νm. For the surgery of hard tissue, the gas container (5) is filled for example with SF6. The laser then emits on 9.6 νm, the wavelength at which the power coupling of the laser beam on the calcified tissue is particularly good. When the gas container (5) has been evacuated, the laser emits on 10.6 νm and is appropriate for soft tissue surgery.</p> |
