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US 2013/0158580 A1Published application
Vitrectomy probe with adjustable cutter port size
AssigneeAlcon Research, Ltd.
InventorsJohn R. Underwood, Matthew Braden Flowers, Jack Robert Auld, John Christopher Huculak
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Abstract
Vitrectomy probes and system related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having an adjustable cutting port size. Various example features are described for adjusting the size of the cutting port. Further, the disclosure provides examples for adjusting the size of the cutter port while the vitrectomy probe is in operation.
Claims20
A vitrectomy probe comprising:
- a housing;
- a cutter extending longitudinally from a first end of the housing, the cutter comprising:
- an outer cutting member coupled to the housing;
- an interior assembly comprising an inner cutting member slideable within the outer cutting member, the interior assembly slideable between a retracted position and an extended position;
- and
- an adjustable port, a size of the adjustable port defined by an edge of an opening formed in the outer cutting member and an end surface of the inner cutting member when the inner cutting member is in a fully retracted position:
- an oscillator operable to reciprocate the interior assembly;
- a stroke limiter operable to limit the size of the adjustable port, the stroke limiter comprising:
- an inclined plane disposed proximate an end of the interior assembly, the inclined plane moveable transversely relative to the interior assembly and configured to engage the end of the interior assembly to define the size of the adjustable port.
6 more elements
A vitrectomy probe comprising:
- a cutter comprising:
- an outer cutting member;
- an interior assembly comprising an inner cutting member, the interior assembly slideable between a retracted position and an extended position;
- and
- an adjustable port, a size of the adjustable port defined by an edge of an opening formed in the outer cutting member and an end surface of the inner cutting member when the inner cutting member is in a fully retracted position:
- a motor operable to reciprocate the inner cutting member relative to the outer cutting member;
- a stroke limiter moveable relative to the interior assembly in a direction having a component that is transverse to a longitudinal axis of the interior assembly, the stroke limiter operable to limit the size of the adjustable port and comprising:
- an inclined plane disposed proximate an end of the interior assembly, the inclined plane moveable in a direction having transverse component relative to the interior assembly and configured to engage the end of the interior assembly to define the size of the adjustable port.
5 more elements
Dependencies are inferred from the claim text.