VITRECTOMY PROBE WITH ADJUSTABLE CUTTER PORT SIZE
First Claim
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1. 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 inner cutting member slideable within the outer cutting member, the inner cutting member 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 inner cutting member; and
a stroke limiter operable to limit the size of the adjustable port, the stroke limiter comprising;
a moveable member threadably retained within the housing, the moveable member moveable in a first longitudinal direction in response to a rotation a first rotational direction and the moveable member moveable in a second longitudinal direction opposite the first longitudinal direction in response to a rotation in a second rotation direction, a location where the moveable member contacts the inner cutting member defining the fully retracted position.
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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.
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Citations
9 Claims
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1. A vitrectomy probe comprising:
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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 inner cutting member slideable within the outer cutting member, the inner cutting member 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 inner cutting member; and a stroke limiter operable to limit the size of the adjustable port, the stroke limiter comprising; a moveable member threadably retained within the housing, the moveable member moveable in a first longitudinal direction in response to a rotation a first rotational direction and the moveable member moveable in a second longitudinal direction opposite the first longitudinal direction in response to a rotation in a second rotation direction, a location where the moveable member contacts the inner cutting member defining the fully retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification