Abstract: A fine-bubble generator is capable of supplying a fluid mixed with a large quantity of fine bubbles into a fluid without causing an unnecessary liquid flow and turbulent flow in the objective fluid. The fine-bubble generator is constructed by arranging two fine-bubble generating sections in a rectangular parallelepiped casing with spouts of the fine-bubble generating sections facing each other.

Abstract: A fine-bubble generator capable of supplying a fluid mixed with a large quantity of fine bubbles into a fluid without causing an unnecessary liquid flow and turbulent flow in the objective fluid. A fine-bubble generator (11) is constructed by arranging two fine-bubble generating sections (12, 13) in a rectangular parallelepiped casing (11a) with spouts (28a, 28b) of the fine-bubble generating sections (12, 13) to face each other.

Abstract: A laser beam treatment apparatus includes a laser beam generating part generating and emitting a plurality of laser beams of different colors, and a projecting part condensing the plurality of laser beams and projecting the laser beams onto a treatment object region.

Abstract: A laser beam treatment apparatus includes a laser beam generating part generating and emitting a plurality of laser beams of different colors, and a projecting part condensing the plurality of laser beams and projecting the laser beams onto a treatment object region.

Abstract: A medical ultrasonic generator having an ultrasonic radiator wound with coils connected to a high-frequency oscillator, when the radiator is provided with a sintered element consisting essentially of Ni--Zn having a thickness of 8 to 20 mm. The ferrite element can effectively apply the ultrasonic oscillation to a human body to improve the effect of medical treatment. Further, the medical ultrasonic generator is superior in terms of workability as a medical treatment because of its ability to effectively apply the ultrasonic oscillation to the affected part even through the clothing worn by a patient.