Body cavity insertable ultrasound apparatus having structure for circulation of ultrasound transmission medium

An ultrasound apparatus of a body cavity insertable type comprising:

• a handpiece;
• a supporting rod that is elongated from the handpiece;
• an ultrasound probe that includes a housing that is connected to the supporting rod and an ultrasound transducer that is fixed to the housing;
• and
• an ultrasound transmission medium circulation mechanism that is configured to discharge an ultrasound transmission medium filled in an ultrasound transmission space that is formed at a front of the ultrasound transducer and to inflow the discharged ultrasound transmission medium to the ultrasound transmission space again,
• wherein the housing and the ultrasound transducer are configured such that a front space and a rear space of the ultrasound transducer are fluidically separated from each other so that the ultrasound transmission medium filled in the ultrasound transmission space is prevented from inflowing to the rear space of the ultrasound transducer.