| 摘要 |
PROBLEM TO BE SOLVED: To solve the present situation such that extremely much labor is required in work changing the lying posture of a bedridden old man or a patient at every predetermined time in order to prevent a sore of the skin to charge a burden on a helper. SOLUTION: Water, a liquid or a gel-like substance 2 is sealed in a flexible bag 1 and an ultrasonic vibrator 3 is embedded in the single surface of the flexible bag 1 and an oscillator 5 is connected to the ultrasonic vibrator 3 through a cord 4. |
