Computer controlled smart phacoemulsification method and apparatus
First Claim
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1. A control system for an ultrasonic transducer which includes an aspiration port for operating on a human eye, comprising:
- means for monitoring changes in a load encountered by the ultrasonic transducer; and
means for controlling an amount of aspiration based on said load changes, and for changing an amount of aspiration to automatically increase when a load on the transducer increases, and changing said amount of aspiration to automatically decrease when the load decreases.
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Abstract
A method and apparatus for operating on the human eye detects changes in load on the transducer and controls aspiration based on the load changes. A change from a lower load to a higher load indicates 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.
167 Citations
21 Claims
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1. A control system for an ultrasonic transducer which includes an aspiration port for operating on a human eye, comprising:
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means for monitoring changes in a load encountered by the ultrasonic transducer; and means for controlling an amount of aspiration based on said load changes, and for changing an amount of aspiration to automatically increase when a load on the transducer increases, and changing said amount of aspiration to automatically decrease when the load decreases. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling an operation in a human eye comprising the steps of:
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operating a transducer to conduct said operation; detecting a load presented to the transducer; determining a relation between a load presented to the transducer with respect to a previous load presented to the transducer; automatically increasing an amount of aspiration if said load is greater than said previous load; and automatically decreasing said amount of aspiration if said load is less than said previous load. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for enabling operations on a human eye comprising:
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means for applying ultrasound to the eye, including aspiration means for removing particles, produced by said ultrasound, from the human eye; means for monitoring conditions of said ultrasound applying means, and said aspiration means; means for producing a voice sound indicative of changes in at least one of said ultrasound applying means and said aspiration means; means for monitoring changes in a load encountered by said ultrasound applying means, said voice sound produced by said voice-producing means being indicative of said changes in load; and means for controlling an amount of aspiration produced by said aspiration means based on said changes in load. - View Dependent Claims (16)
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17. An apparatus for operating on a human eye comprising:
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a operating needle of the type for surgically operating on an area of said eye; means for aspirating said area during said operation on said eye; means for determining whether a hardness of said area of said eye is changing; and means for automatically changing an amount of aspiration produced by said aspirating means when said hardness changes by more than a predetermined amount. - View Dependent Claims (18, 19, 20)
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21. A method of operating on an area of the human eye comprising the steps of:
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determining a hardness of said area of said human eye; determining if said hardness has changed with respect to a previous hardness detected at a previous time; aspirating said area of said human eye; and automatically changing an amount of said aspiration when said hardness changes by more than a predetermined amount.
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Specification