| 摘要 |
PURPOSE:To prevent a holding part from superheat and to make it possible to use safely an operating apparatus for surgery by stopping to supply electric power to a motor in the holding part when temp. reaches a specified second temp. higher than the first temp. CONSTITUTION:When an electric current I is fed to a temp. measuring element 28 from a source 74 for a const. electric current, a voltage R.I is generated between both ends of the temp. measuring element 28 by the resistance R of the temp. measuring element 28. This generated electric voltage is converted to a digital signal by means of A/D transformers 76 and 76 and it is input to a control circuit 61 as a temp. information. Then, when the control circuit 61 detects a specified first temp. from a temp. information, an alarm LED 35 on a front panel is turned on and off or on and when a specified second temp. higher than the first temp. is detected, an electric power supply to a motor 22 is stopped through a D/A transformer 63. Superheat of a holding part is prevented thereby and it is possible to use it safely. |
