Title:
可変の蔓巻角を有する歯内治療用ヤスリ
Document Type and Number:
Japanese Patent JP5876633
Kind Code:
B2
Abstract:
A rotatable endodontic file (10) for cleaning / shaping a tooth root canal, comprising an elongated shaft having a proximal end portion (14), a distal end (16) and a tapered working portion (18) having a rotational axis, the working portion (18) extending from the proximal portion (14) to the distal end (16), the external surface of the shaft working portion having a plurality of at least two spiraled, spaced apart continuous helical flutes (22), the flutes having therebetween an equal number of spiraled, spaced apart flanges (26), each flange having in a plane perpendicular the rotational axis an outer end surface forming a continuous spiraled scraping/cutting edge (30) extending the length of the shaft working portion (18), the flutes having helical angles relative to the rotational axis of between 10° and 30° and wherein the helical angles vary at selected longitudinal locations.
Inventors:
William Bee Johnson
Application Number:
JP2007052157A
Publication Date:
March 02, 2016
Filing Date:
March 02, 2007
Export Citation:
Assignee:
William Bee Johnson
International Classes:
A61C5/02; A61C1/00; A61C8/00
Domestic Patent References:
| JP856961A | ||||
| JP2001170075A | ||||
| JP5919120U |
Foreign References:
| WO2005122941A1 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Shigeru Sakuma
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Shigeru Sakuma