VITRECTOMY SURGICAL APPARATUS EMPLOYING MULTISENSOR PRESSURE FEEDBACK

摘要

A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a plurality of sensors provided at a plurality of points between the pressure source and the vitrectomy handpiece, and a controller configured to employ a function correlating a desired cut rate with a pressure source duty cycle and employ a different function when one sensor of the plurality of sensors senses a pressure outside a predetermined pressure range.

主权项

1. A vitrectomy apparatus, comprising:
a pressure source; a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device; a plurality of sensors provided at a plurality of points between the pressure source and a vitrectomy handpiece; and a controller configured to selectively provide commands to change pressure source duty cycle according to a function selected from a plurality of functions when one sensor of the plurality of sensors measures a pressure outside a predetermined pressure range.