| 摘要 |
A surgical instrument system includes a tool ( 2 ) including an elongate shaft which defines the tool axis. The shaft bears a plurality of marker rings ( 10, 11, 12 ) arranged in a predetermined pattern on the surface of the shaft so that they extend around the shaft axis, the marker rings identifying the tool. The system includes a device ( 14 ) for receiving signals from the rings, and a data processor ( 16 ) for analysing the signal from the rings and generating information relating to the identity of the tool. |
