发明名称 |
ROTARY DRIVE CUTTER FOR DENTISTRY |
摘要 |
[PROBLEMS] To provide a rotary drive cutter for dentistry in which the fracturing position can be limited to the shank side and the lifetime to fracture is prolonged. [MEANS FOR SOLVING PROBLEMS] In the rotary drive cutter for dentistry where a peeso reamer (10) as the rotary drive cutter for dentistry comprises a cutting edge (11) formed on the distal end side, a shank (12) formed at the proximal end, and a neck (13) formed between the cutting edge (11) and the shank (12), the neck (13) includes a tapered portion (13a) which is thick on the distal end side and thin on the proximal end side, and a straight portion (13b) having the same diameter as that of the tapered portion on the thin diameter side and a fixed thickness. Fracture takes place at the thinnest part of the tapered portion but since that part is the straight portion, the lifetime can be prolonged. |
申请公布号 |
WO2008146670(A1) |
申请公布日期 |
2008.12.04 |
申请号 |
WO2008JP59318 |
申请日期 |
2008.05.21 |
申请人 |
MANI, INC.;TETSUKA, SATOSHI;MURAOKA, NOBUHIRO;KATOH, KAZUAKI |
发明人 |
TETSUKA, SATOSHI;MURAOKA, NOBUHIRO;KATOH, KAZUAKI |
分类号 |
A61C3/02;A61C1/02;A61C5/02;A61C5/04 |
主分类号 |
A61C3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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