CATARACT REMOVAL DEVICE AND INTEGRATED TIP
First Claim
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1. An ophthalmic surgical instrument for use at a surgical site, comprising:
- an endpiece configured to be operable with a handpiece having at least one axis, said endpiece configured to oscillate about the at least one axis;
wherein the endpiece is configured with at least one polishing surface and at least one emulsification surface;
wherein said emulsification surface is configured to emulsify intraocular structures; and
wherein said primary polishing surface is configured to polish the lens capsule of the eye.
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Abstract
The present invention is directed to an apparatus and method for assisted removal of the cortex, capsule polishing and destruction and/or removal of other intraocular structures. More particularly, the present invention is directed to a surgical apparatus configurable for removal of the cortex and the polishing of the capsule during cataract extraction surgery.
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Citations
30 Claims
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1. An ophthalmic surgical instrument for use at a surgical site, comprising:
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an endpiece configured to be operable with a handpiece having at least one axis, said endpiece configured to oscillate about the at least one axis; wherein the endpiece is configured with at least one polishing surface and at least one emulsification surface; wherein said emulsification surface is configured to emulsify intraocular structures; and wherein said primary polishing surface is configured to polish the lens capsule of the eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 23, 26, 27, 28, 29)
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9. A method of operating an ophthalmic instrument having at least one source of vibration energy, and at least one device configured to provide negative pressure and an endpiece having a proximal end and a distal end, the endpiece configured with at least a polishing surface, an emulsification surface and an aspiration inlet coextensive with a channel configured within the endpiece, wherein the inlet is recessed from the surface to prevent complete occlusion by intraocular tissues, said method comprising the steps of:
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(a) inserting the surgical apparatus into the eye; (b) engaging the source of vibration; (c) selecting a vibration power, wherein the vibration power is related to the amplitude and frequency of the vibration; (d) bringing emulsification surface of the endpiece into direct contact with lens cortex in order to emulsify the lens cortex; (e) drawing the pieces of cortex into the inlet; (f) moving the instrument to a new location and repeating steps (a)-(e) within the eye until the cortex is removed; (g) rotating the endpiece to bring the polishing surface into contact with the capsule; (h) polishing the capsule by oscillating the endpiece and drawing epithelial cells and small pieces of the cortex that still remain attached to the capsule into the inlet; and (i) moving the endpiece to a new location within the eye to contact other capsule tissue and repeating step (h) until the lens capsule is polished.
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10. A method of operating an ophthalmic instrument having at least one source of vibration energy, and at least one device configured to provide negative pressure and an endpiece having a proximal end and a distal end, the endpiece configured with at least a polishing surface, an emulsification surface and an aspiration inlet coextensive with a channel configured within the endpiece, wherein the inlet is recessed from the surface to prevent complete occlusion by intraocular tissues, said method comprising the steps of:
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(a) inserting the surgical apparatus into the eye; (b) engaging the source of oscillation; (c) selecting a oscillation power, wherein the vibration power is related to the amplitude and frequency of the vibration; (d) bringing emulsification surface in close proximity to lens cortex in order to emulsify the lens cortex; (e) drawing the pieces of cortex into the inlet; (f) moving the instrument to a new location and repeating steps (a)-(e) within the eye until the cortex is removed; (g) rotating the endpiece to bring the polishing surface into close proximity with the capsule; (h) polishing the capsule by oscillating the endpiece and drawing epithelial cells and small pieces of the cortex that still remain attached to the capsule into the inlet; and (i) moving the endpiece to a new location within the eye to contact other capsule tissue and repeating step (h) until the lens capsule is polished. - View Dependent Claims (21, 22)
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Specification