Title:
【発明の名称】コンピュータ制御スマート水晶体乳化方法およびその装置
Document Type and Number:
Japanese Patent JP2858949
Kind Code:
B2
Abstract:
A method and apparatus for operating on the human eye detects changes in load, more specifically, mechanical impedance, of the transducer (300) and controls aspiration based on the load changes. A change from a lower load to a higher load indications that harder tissue is being encountered and accordingly causes aspiration amount to increase. Conversely, a change from a higher load to a lower load indicates that aspiration amount should be quickly decreased since the tissue which is being encountered is softer. One way to detect the impedance is by a sensor (1008), i.e., a piezoelectric element coupled to the operating needle detecting the movement thereof.
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Inventors:
KOSUTEIN JON EE
Application Number:
JP50442792A
Publication Date:
February 17, 1999
Filing Date:
January 02, 1992
Export Citation:
Assignee:
KOSUTEIN JON EE
International Classes:
A61B18/00; A61F9/007; A61M1/00; G05D19/02; A61B17/00; A61B19/00; (IPC1-7): A61F9/007; A61B17/36
Domestic Patent References:
| JP5875542A | ||||
| JP3123548A |
Other References:
【文献】米国特許4168707(US,A)
【文献】国際公開359217(WO,A1)
【文献】国際公開359217(WO,A1)
Attorney, Agent or Firm:
Akira Asamura (3 outside)