ELECTRIC TOOTHBRUSH AND BRUSH HEAD FOR ELECTRIC TOOTHBRUSH Russian patent published in 2013 - IPC A61C17/22 

FIELD: personal use articles.

SUBSTANCE: present invention relates to the field of medicine, in particular hygienics, and is designed for cleaning teeth. The brush head of the electric toothbrush comprises a bristle holder comprising the attachment means for the bristle holder with the ability of its movement. On the bristle holder at least two outer beams of bristles and several inner beams of bristles are located. The outer beams of bristles have a greater height than the inner beams of bristles. The working surface is formed by the free ends of the outer and inner beams of bristles and has a central cavity having a concave bottom in the shape of a groove which is characterised by continuous curvature in one direction. The free ends of the inner beams of bristles have inclined end surfaces. The end surfaces of various inner beams of bristles have a different slope, so they form the said continuous curvature of the concave bottom in the form of a groove. Between the central cavity and the said outer beams of bristles there is an abrupt change of height in the form of a step.

EFFECT: ensuring effective and complete cleaning of interproximal spaces, without deterioration of effectiveness of the teeth side surfaces cleaning and easiness in use due to the self-centering effect.

17 cl, 28 dwg