Patent ID: 9241830
Filing Date: 2016-01-26
CPC Classification: A61B,A61F,F15B,Y10T

Claim Text:
1. A system for a pneumatically-powered vitrectomy machine comprising: a source of pressurized gas; a first output port for providing pressurized gas to a vitrectomy probe; a second output port for providing pressurized gas to the vitrectomy probe; an output valve operable to selectively direct pressurized gas to the first output port and the second output port, the output valve in selective communication with the source of pressurized gas; a first manifold coupling the first output to the output valve; a second manifold coupling the second output port to the output valve; a first venting manifold connecting the output valve to a first venting port, the output valve movable between a first position in which pressurized gas is supplied to the first output port and pressurized gas from the second manifold is vented via the first venting port and a second position in which pressurized gas is supplied to the second output port and pressurized gas from the first manifold is vented via the first venting port; a venting valve disposed between the source of pressurized gas and the output valve; a second venting manifold connecting the venting valve to a second venting port, the venting valve moveable between a first position in which pressurized gas from the output valve is vented via the second venting port and pressurized gas from the source of pressurized gas is prevented from being communicated to the output valve and a second position in which pressurized gas from the source of pressurized gas is communicated to the output valve; a first pressure transducer disposed in the first manifold, the first pressure transducer configured to read a first pressure of a gas in the first manifold; and a controller adapted to receive information received from the first pressure and activate the venting valve; wherein when the information received from the first pressure transducer indicates a fault condition, the controller directs the venting valve into the first position; wherein in the controller is adapted to rapidly oscillate the output valve between the first position and the second position, the alternatingly supplied pressurized gas operable to oscillate a cutter of the vitrectomy probe.