NZ333350A - Rotary device for removing ophthalmic lens - Google Patents

Abstract

A device for reducing an ophthalmic lens within the lens capsule of a mammalian eye, the device comprising: an elongate probe insertable into the lens capsule, the probe comprising: i) an elongate tubular sheath; ii) a rotatable drive shaft extending longitudinally through the elongate tubular sheath, the drive shaft having a distal end; iii) a rotatable lens-reducing head positioned on the distal end of the drive shaft; iv) the tubular sheath being configured and positioned, during operation of the device, such that a distal portion of the sheath will shield a portion of the lens reducing head while allowing the remainder of the head to contact and reduce lens matter, wherein one of the tubular sheath and the rotatable drive shaft are longitudinally moveable relative to the other to alternately position the rotatable lens-reducing head relative to the tubular sheath in : A first position wherein the lens-reducing head is positioned within the tubular sheath; and a second position wherein at least a portion of the lens-reducing head is sufficiently exposed to contact and reduce lens matter during operation of the device.