Instrument for treating an ocular disorder

A device for the removal of a debris from an eye during the treatment of an ocular disorder, comprising;

• a mechanical drive unit;
• a chuck connected to and rotatably driven by said mechanical drive unit, said chuck having an aperture extending at least partially therethrough, said aperture being formed by sidewalls separated by a slot and having a cross-sectional aperture profile defined by a pair of curved surfaces and a pair of linear surfaces connected to each of said pair of curved surfaces;
• an instrument removably secured within said aperture, said instrument comprising:
• a swab having a tip portion, said tip portion being sized to provide access to the debris on an eyelid margin of the eye;
• and
• a rigid member having a distal end portion and a proximal end portion, said distal end portion affixed to said swab, said proximal end portion having a cross-sectional member profile configured to cooperate with said cross-sectional aperture profile of said aperture such that rotation of said proximal end portion within said aperture is inhibited, wherein said cross-sectional member profile of said proximal end portion is non-circular and is defined by first and second curved portions, the first curved portion including a first curved major convex arc surface about a first center, the second curved portion including a second curved major convex arc surface about a second center, the first center and the second centers being offset from each other, and a linear tab portion extending between and connecting the pair of curved portions, said linear tab portion including opposing linear surfaces, each of which is directly connected to both of said curved major arc surfaces of said pair of curved portions, such that the cross-sectional member profile has a first groove located at a gap between said pair of curved portions and along one of said opposing linear surfaces, and wherein said proximal end portion is sized to form an interference fit with the sidewalls when inserted into said aperture of said chuck,
• wherein said mechanical drive unit rotatably drives said instrument via said chuck for removing the debris, and wherein the securing of said instrument to said chuck transmits the movement of said mechanical drive unit to said instrument, including at least one of reciprocating movement, vibrating movement, and rotary movement.