Title:
DENTAL ROOT CANAL TREATMENT INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2021/033777
Kind Code:
A1
Abstract:
The present invention is configured so that differing flexibility can be exhibited in a desired range from the distal end of an operating part to a shaft part side. The present invention has a shaft part (A) and an operating part (B), the operating part being formed in a tapered shape that narrows from the shaft part to the distal end of the operating part. A cross section (Ba) of the operating part farthest toward the shaft part is a parallelogram having a pair of opposing long sides (1a), a pair of opposing short sides (2a), acute-angled edges (5a) formed on a long diagonal (3a), and obtuse-angled edges (5a) formed on a short diagonal (4a). A cross section (IIBb) near the distal end of the operating part is a parallelogram having sides (1b) continuous from the pair of long sides (1a), sides (2b) continuous from the pair of short sides (2a), acute-angled edges (5b) which are formed on a long diagonal (3b) and are continuous from the acute-angled edges (5a), and obtuse-angled edges (6b) which are formed on a short diagonal (4b) and are continuous from the obtuse-angled edges (6a). The angle (β) formed by a side (1b) constituting the cross section (IIBb) and the long diagonal (3b) is larger than the angle (α) formed by a long side (1a) in a cross section (IIBa) and the long diagonal (3a).
Inventors:
MATSUTANI KAZUHIKO (JP)
KUROKO KATSUICHI (JP)
SUZUKI DAISUKE (JP)
OKADA TOMOHIRO (JP)
FURUKAWA SATOSHI (JP)
KUROKO KATSUICHI (JP)
SUZUKI DAISUKE (JP)
OKADA TOMOHIRO (JP)
FURUKAWA SATOSHI (JP)
Application Number:
PCT/JP2020/031724
Publication Date:
February 25, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
MANI INC (JP)
International Classes:
A61C5/42
Foreign References:
| US20150216624A1 | 2015-08-06 | |||
| JP2016504142A | 2016-02-12 | |||
| CN206044757U | 2017-03-29 |
Attorney, Agent or Firm:
NISHIYAMA Takahiro (JP)
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