Motor-driven Handpiece

Abstract

A motor-driven handpiece, which has a grip sleeve with a head area for mounting a tool, in particular for the preparation of tooth substance and/or bone substance, in which the head area is at least partially surrounded or encapsulated by a thermoplastic material which, compared to the material of the rest of the grip sleeve, has a lower thermal conduction value.

1 . Motor-driven handpiece comprising a grip sleeve with a head region for mounting a tool, wherein the head region is at least partially surrounded or sheathed with a thermoplastic material which, compared to the material of the rest of the grip sleeve, has a lower thermal conduction value. 
     
     
         2 . Motor-driven handpiece according to  claim 1 , wherein the head region is completely surrounded or sheathed with the thermoplastic material. 
     
     
         3 . Motor-driven handpiece according to  claim 1 , wherein the thermoplastic material is injection-molded around the head region. 
     
     
         4 . Motor-driven handpiece according to  claim 1 , wherein the thermoplastic material is fastened to the head region in the form of a detachable cap. 
     
     
         5 . Motor-driven handpiece according to  claim 1 , wherein the thermoplastic material is at least partially provided with elevations or projections. 
     
     
         6 . Motor-driven handpiece according to  claim 1 , wherein the outward appearance of the thermoplastic material is temperature-dependent. 
     
     
         7 . Motor-driven handpiece according to  claim 1 , wherein the thermoplastic material has a lower thermal conduction value than metal. 
     
     
         8 . Cap for use with a motor-driven handpiece, the handpiece comprising a grip sleeve with a head region for mounting a tool, wherein the cap is adapted to be detachably fastened to the head region and is formed from a thermoplastic material which has a lower thermal conduction value than metal. 
     
     
         9 . Cap according to  claim 8 , wherein a surface of the cap is provided, at least in part, with elevations or projections. 
     
     
         10 . Cap according to  claim 8 , wherein the outward appearance of the thermoplastic material is temperature-dependent. 
     
     
         11 . Motor-driven handpiece according to  claim 1 , wherein the tool is a tool for the preparation of at least one of a tooth substance and a bone substance. 
     
     
         12 . Motor-driven handpiece according to  claim 6 , wherein the color of the thermoplastic material is temperature-dependent. 
     
     
         13 . Cap according to  claim 8 , wherein the tool is a tool for the preparation of at least one of a tooth substance and a bone substance. 
     
     
         14 . Cap according to  claim 10 , wherein the color of the thermoplastic material is temperature-dependent.