초록 ▼

This invention relates to an ultrasonic endoscope which includes a manipulating portion coupled to a light source device and an ultrasonic observation apparatus through a universal cord, an insertion portion inserted in a body cavity, and a sub-manipulating portion arranged between the insertion por

This invention relates to an ultrasonic endoscope which includes a manipulating portion coupled to a light source device and an ultrasonic observation apparatus through a universal cord, an insertion portion inserted in a body cavity, and a sub-manipulating portion arranged between the insertion portion and the manipulating portion, an air-supply path and a suction path being arranged in the universal cord, the insertion portion having a distal end portion on which an observation optical system and an ultrasonic vibrator are mounted, the ultrasonic vibrator being covered with a balloon fixed to a surrounding portion of the distal end portion, and an optical system water-supply pipe for supplying water for washing the observation optical system and a balloon water-injection pipe for injecting water into the balloon being arranged in the insertion portion. The ultrasonic endoscope of this invention is provided with a water path switch means capable of causing the water-supply path in the universal cord to communicate with one or both of the optical system water-supply pipe and the balloon water-injection pipe in the insertion portion.

대표청구항 ▼

An ultrasonic endoscope, comprising: a manipulating portion coupled to a light source device and an ultrasonic observation apparatus through a universal cord; an insertion portion insertable into a body cavity; a sub-manipulating portion coupled between said insertion portion and said manipulating p

An ultrasonic endoscope, comprising: a manipulating portion coupled to a light source device and an ultrasonic observation apparatus through a universal cord; an insertion portion insertable into a body cavity; a sub-manipulating portion coupled between said insertion portion and said manipulating portion; an air-supply path means, a liquid supply path means, and a suction path means in at least said universal cord; said insertion portion having a distal end portion; said insertion portion including an observation optical system and an ultrasonic vibrator means at said distal end portion thereof; balloon means attached to said distal end portion of said insertion portion and surrounding said ultrasonic vibrator means; an optical system liquid-supply conduit means at least in said insertion portion for supplying a liquid to said observation optical system for washing said observation optical system; a balloon liquid-injection conduit means at least in said insertion portion for injecting said liquid into said balloon means for inflating or expanding said balloon; and liquid path switching means selectively and switchably coupling said liquid-supply path means in said universal cord to at least one of said optical system liquid-supply conduit means and said balloon liquid-injection conduit means in said insertion portion.