| CPC A61B 18/14 (2013.01) [A61B 17/32002 (2013.01); A61B 18/148 (2013.01); A61B 18/149 (2013.01); A61B 18/1442 (2013.01); A61B 90/90 (2016.02); A61B 90/98 (2016.02); A61B 2017/00017 (2013.01); A61B 2017/0046 (2013.01); A61B 2017/00482 (2013.01); A61B 2017/00876 (2013.01); A61B 2018/0091 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00196 (2013.01); A61B 2018/00202 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/1422 (2013.01); A61B 2090/0811 (2016.02)] | 16 Claims |
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1. An arthroscopic system, comprising:
a controller;
a handpiece operatively coupled to the controller, the handpiece including a motor drive and a first sensor; and
a resecting probe with a proximal hub and an elongate shaft assembly that extends distally from the proximal hub about a longitudinal axis to a working end of the resecting probe, the elongate shaft assembly including an outer sleeve with an outer cutting window in a side of the outer sleeve, the outer cutting window communicating with an axial bore in the outer sleeve that extends proximally from outer cutting window back through the outer sleeve, the elongate shaft assembly further including an inner sleeve assembly that is rotatably received in the axial bore of the outer sleeve so that the inner sleeve assembly can achieve at least a first rotational position and a second rotational position in the outer sleeve, the inner sleeve assembly including a rotating drive coupling fixed to a proximal portion of the inner sleeve assembly, the inner sleeve assembly including a distal portion with an inner cutting window in a first side of the distal portion, the inner cutting window communicating with an axial extraction channel in the inner sleeve assembly that extends proximally from the inner cutting window back through the inner sleeve assembly for connecting to a negative pressure source, the distal portion of the inner sleeve assembly further including an electrode carried on a second side of the distal portion opposite the first side of the distal portion, the proximal hub detachably couplable to the handpiece to couple the rotating drive coupling to the motor drive for rotating the inner sleeve assembly in the outer sleeve,
wherein, in the first rotational position, the inner cutting window aligns sufficiently with the outer cutting window to allow fluid outflow to pass through the outer cutting window and into the axial extraction channel through the inner cutting window during use, and wherein, in the second rotational position, the electrode aligns with a longitudinal centerline of the outer cutting window,
wherein the proximal hub carries a first magnetic component including a first independent magnet and a second independent magnet that each have a North pole and a South pole, the first independent magnet and the second independent magnet being disposed in opposing sides of the proximal hub spaced outwardly from the longitudinal axis with the respective North poles of the first independent magnet and the second independent magnet oriented in opposite directions relative to the longitudinal axis,
wherein the proximal hub is selectively couplable to the handpiece so that the working end of the resecting probe can be positioned for use in either an upward orientation or a downward orientation relative to a first side of the handpiece, wherein the first independent magnet is proximate the first sensor when the working end is in the upward orientation and the second independent magnet is proximate the first sensor when the working end is in the downward orientation;
wherein said controller is configured to receive a first signal from the first sensor about a magnetic field of the first independent magnet or the second independent magnet when the first independent magnet or the second independent magnet is proximate the first sensor to identify whether the working end is in said upward orientation or downward orientation relative to the first side of the handpiece.
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