| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To adequately control driving of a cutting tool so as not to cut living tissue too much in a surgical opening apparatus. <P>SOLUTION: The surgical opening apparatus 10 comprises a grinder 12 having a drill 14 on its front end, an apparatus body part 20 having a control device 26 to drive and control the grinder 12 therein, and a connection line 16 to connect the grinder 12 and the apparatus body part 20. A control circuit 30 in the control device 26 includes a load current detection part 32 to detect the load current of a rotary electric motor 13 of the grinder 12, a signal output part 34 to output signals related to conditions of an opening based on changes of the load current in a process of the opening creation, a regenerative brake operating part 36 to counterrotate the rotary electric motor 13 and to apply the regenerative brake on when the through signal is output, and a drive stop part 38 to stop supplying of the drive current to the rotary electric motor 13 and to stop driving of the rotary electric motor 13. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
