| 摘要 |
A surgical instrument is disclosed comprising a handle 7, a shaft 3 and a tool 1. A proximal flexible member 4 is located between the proximal end of the shaft and the handle 7 and a distal flexible member 2 is located between the shaft and the tool. An actuation member 8, such as cables, extends between the proximal and distal flexible members 4,2, such that bending of the proximal flexible member 4 causes a proportional bending of the distal flexible member 2. A motor (21, Figure 2b) is located in the handle 7 of the instrument and actuation of the motor (21) causes rotation of the tool 1. An embodiment is disclosed where the instrument is modular, comprising an instrument module, a handle module and an electronics module. Preferably the motor (21) is controlled by a switch 6 such as a bi-directional analogue switch and is an electric DC servomotor. The instrument may further comprise a control unit 9. |
