US 12,458,478 B2
Oral cavity cleaner for supplying washing water and discharging contaminated water
Sungkwon Ko, Chuncheon-si (KR); and Hyunjong Kim, Seongnam-si (KR)
Assigned to SMDsolution Co., Ltd., Seoul (KR)
Filed by SMDsolution Co., Ltd., Seoul (KR)
Filed on Oct. 28, 2021, as Appl. No. 17/512,728.
Claims priority of application No. 10-2020-0143685 (KR), filed on Oct. 30, 2020; and application No. 10-2020-0164332 (KR), filed on Nov. 30, 2020.
Prior Publication US 2022/0133450 A1, May 5, 2022
Int. Cl. A61C 17/02 (2006.01); A61C 17/06 (2006.01)
CPC A61C 17/0211 (2013.01) [A61C 17/06 (2019.05)] 16 Claims
OG exemplary drawing
 
1. An oral cavity cleaner comprising:
a mouthpiece configured to spray washing water;
a core suction part connected to the mouthpiece and configured to suck contaminated water;
a handle comprising an inflow path through which the washing water flows, a discharge flow path through which the contaminated water flows, and a diffusion flow path configured to define a space in which the washing water flows in a direction toward at least one of upper and lower sides of the discharge flow path, the diffusion flow path being configured to supply the washing water to the mouthpiece; and
a suction pipe configured to connect the core suction part and the discharge flow path,
wherein the handle comprises a diffusion boundary portion disposed at an upstream side of the discharge flow path,
wherein the diffusion boundary portion has a diffusion boundary groove fastened to one end of the suction pipe and protrudes in the handle to prevent the washing water flowing along the diffusion flow path from being introduced into the discharge flow path, and
wherein a diffusion restriction portion is formed at the core suction part and configured to block an inflow of the washing water flowing along the diffusion flow path, and a diffusion restriction groove is formed in the diffusion restriction portion and fastened to another end of the suction pipe.