| 摘要 |
<p>The equipment comprises a sealed CO2 operating laser (13) and a helium-neon visualisation laser (12) whose beams are superposed; a circuit for cooling the operating laser, comprising a heat exchanger whose secondary circuit has flowing through it a liquid circulated by a pump (24), this same pump feeding by way of a 3-way valve (25) either the said secondary circuit of the exchanger or a conduit leading to a nozzle emitting a jet of water. The beams of the lasers and the conduit feeding the said nozzle are joined in a flexible or articulated arm (10) connected to the handpiece (11) in which is also inserted equipment for thermographic visualisation of the operating field.
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