Ultrasound type treatment apparatus

An ultrasound type treatment apparatus comprising:

• ultrasonic oscillation means for outputting an ultrasonic oscillation wave;
• ultrasonic wave transmitting means, connected to said ultrasonic wave oscillation means, for transmitting the ultrasonic oscillation wave from said oscillation means to an affected region of interest in a patient;
• communicating means, formed around said ultrasonic wave transmitting means;
• and
• supply means for supplying a cooling medium to said communicating means;
• wherein said ultrasonic wave transmitting means defines a hole therein and comprises a probe using said hole as a first suction passage;
• said communicating means including an inner tubular sheath section covering said probe so as to define a space relative to said probe, and an outer tubular sheath section covering said inner sheath section so as to define a space relative to said inner sheath section, said inner sheath section having both a proximal end portion extending toward said ultrasonic oscillation means and a distal end portion extending toward a distal end of said probe, said outer sheath section having both a proximal end portion extending toward said ultrasonic oscillation means and a distal end portion extending toward the distal end of said probe;
• and
• a cooling medium supply passage and a second suction passage are provided, with one being between said probe and said inner sheath section, and the other being between said inner sheath section and said outer sheath section, said cooling medium supply supply passage and said second suction passage forming a cooling medium transmitting means.