OPHTHALMIC SURGICAL CUTTING SYSTEM WITH VARIED CROSS SECTION TUBE-SET
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United States of America Patent
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Dec 9, 2016
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May 31, 2012
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Abstract
An ophthalmic surgical cutting apparatus. In one instance, the apparatus includes a pneumatically-powered surgical cutter driven by a pneumatic pulse generator and a tubing assembly comprising multi-stage tubing connecting the generator to the cutter. The multi-stage tubing has a length of about two feet or more and includes a first-stage tube and a second-stage tube. The first-stage tube has a first end coupled to the output port of the generator, a second end opposite the first end, and a first inner channel having a first diameter for transmitting the pressure pulses to the cutter. The second-stage tube has a first end in pneumatic communication with the second end of the first-stage tube, a second end opposite the first end of the second-stage tube coupled to the cutter, and a second inner channel having a second diameter different than the first diameter for transmitting the pressure pulses to the cutter.
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