发明名称 |
Method and apparatus for excision endpoint control |
摘要 |
Methods and apparatus for determining the depth of excision generated by a material removal process, for determining the thickness of unablated material below the excision or incision, and for providing endpoint control of a material removal process utilize acoustic transducers for measuring the time delay between a first acoustic pulse resulting from material removal and a second acoustic pulse reflected from a distal surface or boundary layer of the material. The time delay between the two pulses detected by the transducer provides a measure of excision depth and of the depth of material below the excision. Endpoint control is provided by terminating material removal when a selected excision depth is detected. The invention can be used, for example, as a real-time monitor of excision depth and residual lamella thickness under the excision during laser corneal surgery.
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申请公布号 |
US5196006(A) |
申请公布日期 |
1993.03.23 |
申请号 |
US19910773781 |
申请日期 |
1991.10.10 |
申请人 |
SUMMIT TECHNOLOGY, INC. |
发明人 |
KLOPOTEK, PETER J.;SACHAROFF, ALEX C.;CARO, RICHARD G. |
分类号 |
A61B17/00;A61B19/00;A61F9/008;A61F9/01;A61F9/013 |
主分类号 |
A61B17/00 |
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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