Method of operating a vitrectomy probe
First Claim
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1. A method of operating a vitrectomy probe, comprising the steps of:
- providing a vitrectomy probe, said probe having;
a tubular outer cutting member with a port for receiving ophthalmic tissue and a tubular inner cutting member disposed within said outer cutting member; and
an actuating mechanism for reciprocating actuation of said inner cutting member so that said inner cutting member opens and closes said port and cuts said ophthalmic tissue disposed in said port;
providing a computer;
disposing said port in a posterior segment of an eye;
aspirating said ophthalmic tissue into said port; and
using said computer and said actuating mechanism to operate said probe over a range of cut rates so that an amount of time that said port is open during each cut cycle of said probe is fixed and minimized over all cut rates within said range of cut rates.
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Abstract
An improved method of operating a vitrectomy probe is disclosed in which the amount of time that the probe port is open during each cut cycle of the probe is fixed and minimized over all cut rates of the probe.
46 Citations
9 Claims
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1. A method of operating a vitrectomy probe, comprising the steps of:
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providing a vitrectomy probe, said probe having; a tubular outer cutting member with a port for receiving ophthalmic tissue and a tubular inner cutting member disposed within said outer cutting member; and an actuating mechanism for reciprocating actuation of said inner cutting member so that said inner cutting member opens and closes said port and cuts said ophthalmic tissue disposed in said port; providing a computer; disposing said port in a posterior segment of an eye; aspirating said ophthalmic tissue into said port; and using said computer and said actuating mechanism to operate said probe over a range of cut rates so that an amount of time that said port is open during each cut cycle of said probe is fixed and minimized over all cut rates within said range of cut rates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification