公开(公告)号：US20220117385A1

公开(公告)日：2022-04-21

申请号：US17256247

申请日：2019-05-16

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA ,  Yuji SAIKI ,  Tomokazu YOSHIDA

IPC: A46B5/00 ,  A46B1/00 ,  A61C15/00

Abstract: Provided is an interdental cleaning tool that can be smoothly inserted between back teeth. An interdental cleaning tool according to the present invention includes: a cleaning tool body that is made of a synthetic resin, and includes a grip portion that is capable of being gripped with fingers of a user and a shaft portion that extends in one direction from the grip portion; and a cleaning portion configured to clean between teeth, covering a leading end of the shaft portion, and made of an elastomer, wherein (angle b)/(angle a) is 0.82 or more, where the angle a is a rotational angle (degrees) when a torque value A is measured, the torque value A being a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 6 mm away from a leading end of the cleaning portion, and the angle b is a rotational angle (degrees) when a torque value B is measured, the torque value B being a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 10 mm away from the leading end of the cleaning portion.

公开(公告)号：US20210267732A1

公开(公告)日：2021-09-02

申请号：US17256371

申请日：2019-05-16

Applicant: KOBAYASHI PHARMACEUTICAL CO., LTD.

Inventor： Tasuku KIKKAWA ,  Yuji SAIKI ,  Tomokazu YOSHIDA

IPC: A61C15/02 ,  A46B5/02

Abstract: Provided is an interdental cleaning tool that is not too soft and is unlikely to break during use. An interdental cleaning tool according to the present invention includes: a cleaning tool body that is made of a synthetic resin, and includes a grip portion that is capable of being gripped with fingers of a user and a shaft portion that extends in one direction from the grip portion; and a cleaning portion configured to clean between teeth, covering a leading end of the shaft portion, and made of an elastomer, wherein Y>−0.07X+3.3 is satisfied, where Y is a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 15 mm away from a leading end of the cleaning portion, and X is a rotational angle (degrees) when the maximum torque value is measured.