发明名称 |
METHOD AND APPARATUS FOR DETERMINING THE PRELOAD FOR SCREWS FOR DENTAL IMPLANT SYSTEMS |
摘要 |
A method and apparatus are provided for determining the preload in a dental implant system. The preload is determined by transmitting a sonic impulse, which is preferably an ultrasonic impulse, at a predetermined frequency to the head of the implant screw through a transducer (50) which may be incorporated in the head of the screw (26), the head of a wand which generates the sonic impulse, or the transducer and pulse-generating instrumentation may be incorporated into a torque generating instrument used to tighten the screw. The preload is determined by measuring the delay between the first and second reflections through the preloaded screw to determine a preload value and comparing that value with a pre-established baseline value for the screw, and comparing the difference with a predetermined table of values to determine the preload on the screw. |
申请公布号 |
WO0245610(A3) |
申请公布日期 |
2003.04.03 |
申请号 |
WO2001US32303 |
申请日期 |
2001.10.18 |
申请人 |
ESPM, LLC |
发明人 |
LANG, BRIEN, R.;MAEV, ROMAN GR.;PTCHELINTSEV, ANDREI |
分类号 |
A61C1/18;A61C8/00;A61C19/04 |
主分类号 |
A61C1/18 |
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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