Title:
歯科用切削装置
Document Type and Number:
Japanese Patent JP4122174
Kind Code:
B2
Abstract:
A air-driven cutting device for medical treatment (a handpiece ( 10 )) comprises a housing ( 18 ) for a head portion ( 14 ). The housing ( 18 ) accommodates a rotary cylinder ( 60 ) for holding a cylindrical cutting tool ( 46 ) inserted through the tool inlet ( 42 ) of the housing, and a turbine blade ( 62 ) mounted around and secured on the rotary cylinder. With this arrangement, a compressed air is blown onto the turbine blade to rotate the turbine blade, the rotor and the cutting tool. Particularly, a part or a whole of the end portion of the rotary cylinder in the vicinity of the tool inlet is covered with the cover section ( 42 ) of the housing. Therefore, the rotary cylinder does not contact the teeth or the tissues of the buccal cavity.
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| WO/1990/014049 | STERILIZABLE NON-LUBRICATED ROTARY DENTAL AND MEDICAL INSTRUMENT |
| JP5815420 | Air-driven dental handpiece |
| JPS5426094 | TURBINE HAND PIECE |
Inventors:
Hirofumi Sawara
Teruzo Nakayama
Tokuyuki Tanaka
Teruzo Nakayama
Tokuyuki Tanaka
Application Number:
JP2002135784A
Publication Date:
July 23, 2008
Filing Date:
May 10, 2002
Export Citation:
Assignee:
Morita Manufacturing Co., Ltd.
International Classes:
A61C1/05; A61C1/08; A61B17/16; A61C3/02
Domestic Patent References:
| JP48058693A | ||||
| JP4061510U | ||||
| JP2000126203A |
Foreign References:
| US3218028 |
Attorney, Agent or Firm:
Aoyama Aoi
Takuji Yamada
Takuji Yamada
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