Cannula for a Functional Handpiece

Abstract

Functional handpiece having an elongate handpiece body which has at its rearward end a connection element for connection with a flexible supply line, and has at its forward end a light emission element of a light permeable material for the illumination of the treatment site, and has in the light emission element an outlet opening for a medium such as water or air or spray, the light emission element forming a forward region of the functional handpiece and being releasably connected with the remaining region of the functional handpiece, and the light emission element having a plug-in fitting for the light emission element. In order to improve the functional handpiece with the regard to the illumination of the treatment site, the light emission element is connected with the remaining region of the functional handpiece by means of a latching device, the latching device having a latching nose directly or indirectly arranged on the light emission element, which can spring in radially inwardly and can self-actingly spring out behind a latching edge 6 e on the plug-in fitting.

1 . Cannula for a functional handpiece having a cannula jacket with rearward and forward ends, a cannula base at the rearward end and an opening at the forward end, a connection device part arranged at the cannula base for connecting the cannula with a grip part of the handpiece, and at least one media line extending through the cannula base to the opening, 
 wherein    the cannula base and the cannula jacket are formed in two parts and the cannula base is forwardly extended with a support arm which forms a transversely directed support between the two parts at a forwardly directed spacing from the cannula base.    
     
     
         2 . Cannula according to  claim 1 , wherein the cannula base and the support arm are connected with one another by means of a plug-in connection having a plug-in recess and a plug-in pin engaging therein.  
     
     
         3 . Cannula according to  claim 1 , wherein the support arm is formed in an angled shape with a foot section and a laterally offset wall.  
     
     
         4 . Cannula according to  claim 3 , comprising at least one medium line or light conductor extending through the hollow chamber of the angled shape.