DAMAGE TOLERANT TOOTHBRUSH HEAD Russian patent published in 2015 - IPC A61C17/34 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medical equipment, involves versions of a brush assembly and is applicable in electrical toothbrushes. The brush assembly for electrically-driven electrical toothbrush comprises a head end accommodating a frame, a holder, a holder extension and at least one buffer element. The frame comprises a first number of contact members supported inside the frame. The holder of movable contact members comprises a second number of contact members supported by the holder of the movable contact members. The holder of the movable contact members is configured to receive cleaning motion from the electric drive, having at least one degree of freedom of motion in relation to the first number of the contact elements. The holder extension of the movable contact members is arranged in a tip of the head, and the extension and frame are gapped. At least one buffer element faces from the gap and is mounted on at least one of the following elements: the frame and extension. At least first portion of the gap mounted in the side periphery region of the head, is less across the width than the second portion of the gap mounted in the inner portion of the toothbrush head; the above first portion of the gap of the lesser width is formed by the above at least one buffer element. The group of inventions involves another two versions of the brush assembly.

EFFECT: inventions enable providing higher stability the brush head to fracture or any mechanical damages accompanying impacts.

16 cl, 4 dwg