New laser hysteroscope for neodymium-YAG endometrial ablation

A multichannel operating hysteroscope was developed for use with the Nd-YAG laser. The telescopes measure 350 mm in length, with a 4 mm outer diameter (OD), and are available with 0 degree or 30 degrees objectives. The operating sheath incorporates two isolated operating channels (2 mm OD) through which an Nd-YAG quartz fiber and an aspiratory cannula can be inserted simultaneously. The design of this instrument permits constant or intermittent aspiration of debris from the intrauterine milieu and very clear vision throughout the operative procedure. The entire cavity of the uterus may be flushed with the distending medium by injecting the liquid through the instillation channel and opening one of the two operating channels.