| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ultrasonic search unit with a balloon dispensing with attaching a balloon tip part to a balloon fixing part again and continuously used even if filled with water more than a tolerance. <P>SOLUTION: This ultrasonic search unit with the balloon is so formed that a part to be inserted in the celom is covered with a sheath 2 filled with media 7, the tip of the sheath 2 is provided with the balloon fixing part 3A having first and second fixing portions 3a and 3b, and the tip side of the balloon fixing part 3A is provided with a balloon lock member 14. When the internal pressure of the balloon 10 becomes more than a prescribed value by being filled with the tolerance quantity or more water by a water filling/absorbing device 13, a balloon tip part 15 moves on the balloon fixing part 3A, reaches the first fixing portion 3a and releases the water. Though the balloon is contracted, it is locked by the balloon lock member 14 to be prevented from falling from the tip of the ultrasonic search unit 1. When the internal pressure inside the balloon 10 becomes the prescribed value or less, the balloon tip part 15 moves to the second fixing portion 3b to stop the water release, so that the balloon 10 can be inflated and used again. <P>COPYRIGHT: (C)2004,JPO |
