公开(公告)号：US20180221123A1

公开(公告)日：2018-08-09

申请号：US15884285

申请日：2018-01-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Mahito NUNOMURA ,  Shinichi TANIGUCHI

IPC: A61C17/02 ,  A61C17/028

CPC classification number: A61C17/0202 ,  A61C17/02 ,  A61C17/028

Abstract: An oral cavity washing device includes a nozzle having a flow passage structure and a pump to feed washing liquid to the flow passage structure. The flow passage structure includes: a first component having a first flow passage; a second component being disposed downstream of the first component and having a second flow passage that is narrower than the first flow passage; a third component being disposed downstream of the second component and having a third flow passage that is broader than the second flow passage; a reducer being disposed downstream of the third component and being configured so as to reduce a width of the flow passage; and a fourth component being disposed downstream of the reducer and having a fourth flow passage that widens with an advancement in a path from the reducer to the outlet port so as to generate cavitation in the washing liquid.

公开(公告)号：US20220125458A1

公开(公告)日：2022-04-28

申请号：US17508599

申请日：2021-10-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Misa HONDA ,  Shinichi TANIGUCHI ,  Hiroki INOUE

IPC: A61B17/24 ,  A61C17/02 ,  A61C17/024 ,  A46B7/04 ,  A46B11/00 ,  A46B9/00

Abstract: The present disclosure provides an oral hygiene device member capable of further reducing a burden on a target object in an oral cavity and capable of maintaining a cleaner state while suppressing deterioration in cleaning performance. Oral hygiene device member according to the present disclosure comprises handle having flow path through which liquid is allowed to pass. Oral hygiene device member comprises head comprising: head body connected to one end side of handle; and head material held by head body. Head material comprises a cleaning part. The cleaning part is exposed from the head body in a state of being held by the head body. The cleaning part is formed of fibers that clean a target object in an oral cavity. Liquid supply path is formed in the head. The liquid supply path communicates with the flow path and supplies liquid to the cleaning part.

公开(公告)号：US20200229906A1

公开(公告)日：2020-07-23

申请号：US16745068

申请日：2020-01-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichi TANIGUCHI

IPC: A61C17/02

Abstract: An oral cavity washing device includes a nozzle and a pump that supplies a liquid to the nozzle. The nozzle has a nozzle flow passage and a reduced part that is disposed in an intermediate part of the nozzle flow passage and that is smaller in cross-sectional area than a rest of the nozzle flow passage. A first flow passage and a second flow passage that are in parallel to each other are disposed between the nozzle and the pump. The first flow passage has a first valve that causes the first flow passage to be opened only when the pump sucks the liquid. The second flow passage has a second valve that causes the second flow passage to be opened only during discharge performed by the pump.

公开(公告)号：US20180221122A1

公开(公告)日：2018-08-09

申请号：US15883876

申请日：2018-01-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Mahito NUNOMURA ,  Shinichi TANIGUCHI

IPC: A61C17/02 ,  A61C1/00 ,  A61H13/00

CPC classification number: A61C17/0202 ,  A61C1/0092 ,  A61C17/02 ,  A61H13/005

Abstract: An oral cavity washing device according to the present disclosure includes: a nozzle having a flow passage structure including a flow passage that includes an inlet port and an outlet port; and a pump to feed washing liquid to the inlet port such that a flow rate of the washing liquid ejected from the outlet port falls within a range of 200 mL/min to 350 mL/min. The flow passage structure includes a first component, a reducer, and a second component. The first component, the reducer, and the second component are configured to generate cavitation in the washing liquid flowing through the flow passage when the flow rate of the washing liquid ejected from the outlet port falls within the range of 200 mL/min to 350 mL/min.

公开(公告)号：US20180333240A1

公开(公告)日：2018-11-22

申请号：US15957581

申请日：2018-04-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Shinichi TANIGUCHI

IPC: A61C17/34 ,  A61C17/26

Abstract: An electric toothbrush according to the present disclosure includes: a shaft to which a brush is attached; a primary drive unit that operates the shaft to let the brush perform a cleaning motion; and a supplementary drive unit that enables the shaft to move eccentrically. Accordingly, the electric toothbrush can facilitate entry of bristles of the brush between teeth and improve performance of cleaning between the teeth.