An air-conditioning device includes a pump for sending a thermal medium, a thermoelectric conversion unit for absorbing heat from the thermal medium, a target setting unit for setting a target cooling value, and a controlling unit. The laser includes the following parameters: pulse width<40 ns, pulse frequency30 kHz for the metal layer and 20 kHz for the dielectric layer, and wavelength532 nmn. In certain variations, the guide element may not be detached from the body tissue after the catheters have been advanced over the guide element. Each lock slide has the capability of locking one or more series of needles inserted into through-holes in the needle guide template by an axial motion applied by a lock lever or cam.