Ophthalmological device
First Claim
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1. An ophthalmological device, comprising:
- a surgical instrument comprising inner and outer, coaxial elements each having surgical means on one end for introduction into and performing a surgical procedure on a patient'"'"'s eye and an opposite end;
a housing fixedly connected to the opposite end of the outer element for holding the surgical instrument;
hydraulic drive means operative in response to hydraulic pressure for moving the inner element relative to the outer element andpressure-exerting means for providing the hydraulic pressure, the pressure-exerting means forming a closed hydraulic system with the hydraulic drive means,wherein said hydraulic drive means comprises a first bellows accommodated inside said housing and connected to said inner element;
a second bellows located in said pressure-exerting means; and
piping communicating said first bellows with said second bellows to establish a closed hydraulic system.
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Abstract
The device comprises a surgical instrument incorporating a movable element and a stationary element, and a drive made as a closed hydraulic system adapted to effect mutual displacement of the elements.
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Citations
13 Claims
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1. An ophthalmological device, comprising:
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a surgical instrument comprising inner and outer, coaxial elements each having surgical means on one end for introduction into and performing a surgical procedure on a patient'"'"'s eye and an opposite end; a housing fixedly connected to the opposite end of the outer element for holding the surgical instrument; hydraulic drive means operative in response to hydraulic pressure for moving the inner element relative to the outer element and pressure-exerting means for providing the hydraulic pressure, the pressure-exerting means forming a closed hydraulic system with the hydraulic drive means, wherein said hydraulic drive means comprises a first bellows accommodated inside said housing and connected to said inner element;
a second bellows located in said pressure-exerting means; and
piping communicating said first bellows with said second bellows to establish a closed hydraulic system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification