US 12,433,395 B2
Toothbrush for promoting plaque removal and manufacturing method therefor
Young Wook Kim, Seoul (KR)
Assigned to PROXIHEALTHCARE INC., Ulsan (KR)
Appl. No. 17/775,611
Filed by PROXIHEALTHCARE INC., Ulsan (KR)
PCT Filed Jul. 14, 2020, PCT No. PCT/KR2020/009243
§ 371(c)(1), (2) Date May 10, 2022,
PCT Pub. No. WO2021/096022, PCT Pub. Date May 20, 2021.
Claims priority of application No. 10-2019-0143432 (KR), filed on Nov. 11, 2019.
Prior Publication US 2022/0395087 A1, Dec. 15, 2022
Int. Cl. A46B 15/00 (2006.01); A46B 9/04 (2006.01); A61N 1/04 (2006.01); A61N 1/18 (2006.01)
CPC A46B 15/0022 (2013.01) [A46B 9/04 (2013.01); A61N 1/0476 (2013.01); A61N 1/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A toothbrush for promoting plaque removal, the toothbrush comprising:
a head portion on which elements for cleaning teeth are arranged;
a first electrode on the head portion;
a second electrode on the head portion, wherein the second electrode is spaced apart from the first electrode by a predetermined distance, and is grounded; and
a voltage supply unit configured to apply an alternating current (AC) voltage and a direct current (DC) voltage together by superimposing the AC voltage and the DC voltage on the first electrode,
wherein the first electrode and the second electrode have pillar structures respectively that are identical or not identical to each other, and the first electrode and the second electrode are respectively arranged on the head portion at a predetermined interval,
wherein the first electrode includes a plurality of first electrodes and the second electrode includes a plurality of second electrodes,
wherein at least one of the plurality of first electrodes and at least one of the plurality of second electrodes have rectangular pillar structures in which one side surface has a length greater than a length of another side surface, and are disposed at the center of the head portion, and
wherein a remaining electrode of the plurality of first electrodes and a remaining electrode of the plurality of second electrodes have circular pillar structures, and are respectively disposed on a peripheral portion of the head portion.