Interdental brush

Abstract

An interdental brush has a hard body, an encapsulation layer and a plurality of soft and elastic bristles. The hard body takes a straight form and has a grip portion and a slender bristle portion. The hard body is sheathed by a soft and elastic material to form the encapsulation layer by means of insert molding. A grip is formed by sheathing the grip portion with the encapsulation layer to enhance holding comfort. The plural elastic bristles aligned in a radial fashion are formed on a surface of the encapsulation layer corresponding to the bristle portion. Given the foregoing interdental brush structure, the elastic bristles on the bristle portion can be deeply slid in between teeth for cleaning. The soft and elastic nature of the bristles ensures gums are not injured during cleaning.

1 . An interdental brush, comprising:
 a hard body taking a straight form and having a grip portion and a slender bristle portion; and   an encapsulation layer formed by a soft and elastic material and sheathed on the grip portion and the slender bristle portion of the hard body; and   a plurality of soft and elastic bristles integrally extended from an outside surface of the encapsulation layer corresponding to the bristle portion.   
     
     
         2 . The interdental brush as claimed in  claim 1 , wherein the grip portion of the hard body is wider than the slender bristle portion and has a rough portion thereon with a length for holding. 
     
     
         3 . The interdental brush as claimed in  claim 2 , wherein the rough portion comprises:
 multiple continuous recesses formed on a top surface and an opposite bottom surface so as to have a wide and thin cross-section thereof; and   multiple protrusions formed on two opposite side surfaces thereof,   wherein the continuous recesses and the protrusions are exposed beyond the encapsulation layer.   
     
     
         4 . The interdental brush as claimed in  claim 1 , wherein the soft and elastic bristles are radially aligned. 
     
     
         5 . The interdental brush as claimed in  claim 2 , wherein the soft and elastic bristles are radially aligned. 
     
     
         6 . The interdental brush as claimed in  claim 3 , wherein the soft and elastic bristles are radially aligned.