| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscopic instrument which allows the exchange of only the tools or tool parts in case the tools or tool parts are damaged and enables a user to do the exchange by himself. SOLUTION: This endoscopic instrument has a shank 2 and a drivable hollow shaft 3 which is extended through this shank 2. A small piece or liquid may be introduced from the front end side to the base end side of the appliance or may be introduced reverse through this hollow shaft 3. The instrument 1 is provided with the exchangeable tool 5 disposed at the front end. The tools 5, 6 are formed removable and are coupled to the end of the shaft 3 and the end of the shank 2 by the positive motion fit for preventing rotation in order to allow the exchange of the tools 5, 6. |
