Patent application number | Description | Published |
20090124960 | Monitoring Thermal Conditions To Vary Operation of an Ultrasonic Needle Tip of a Surgical Instrument - A method and apparatus to operate a surgical instrument in response to a thermal condition being detected that warrants curtailment of further operation. When the thermal condition is reached, command signals are generated that cause a needle of the surgical instrument to either have its vibrational speed slowed, have its vibrational movement stopped, or have it withdrawn from its relative position. The detection is of infrared radiation wavelengths and is carried out with either a thermal imaging device of a thermal recognition device. A corresponding temperature of the detected infrared radiation wavelengths is compared to a critical temperature to determine whether the thermal condition has been reached. | 05-14-2009 |
20100286771 | Intra-ocular device with multiple focusing powers/optics - An intraocular lens device that includes an intraocular lens optics that provides at least two powers of magnification one being near vision power and the other being distance vision power. The lens optics has surface modulations that are responsible for providing the near vision power. The zone structure provides an add power of over 6 diopters. The add power indicative of an extent that the near vision focusing power is greater than the distance vision focusing power. | 11-11-2010 |
20100324581 | Torsional Ultrasound Hand Piece That Eliminates Chatter - A torsional ultrasound surgical hand piece lessens or eliminates chatter from lens material by imparting a twisting, rotary motion to a tip of a phacoemulsification needle at a resonant frequency in excess of 32 kHz. The hand piece has a horn that is designed to operate at an elevated frequency while maintaining size constraints for hand-held ophthalmic instruments. Optionally, heat generation is reduced either through the use of a polyimide tubing situated between the needle and the infusion sleeve, through the use of thermal watch to prevent overheating at the incision, and/or through the use of a bypass hole in the needle that diverts flow under suction into the needle via the bypass hole instead of exiting through an irrigation opening in the infusion sleeve when a tip port is occluded by lens material. | 12-23-2010 |
20110106096 | Monitoring Thermal Conditions To Vary Operation of an Ultrasonic Needle Tip of a Surgical Instrument - A method and apparatus to operate a surgical instrument in response to a thermal condition being detected that warrants curtailment of further operation. When the thermal condition is reached, command signals are generated that cause a needle of the surgical instrument to either have its vibrational speed slowed, have its vibrational movement stopped, or have it withdrawn from its relative position. The detection is of infrared radiation wavelengths and is carried out with either a thermal imaging device of a thermal recognition device. A corresponding temperature of the detected infrared radiation wavelengths is compared to a critical temperature to determine whether the thermal condition has been reached. | 05-05-2011 |
Patent application number | Description | Published |
20140221759 | PUPIL EXPANSION APPARATUS - A pupil expansion apparatus is placed in the eye during an ophthalmic surgical procedure. In one embodiment, the pupil expansion apparatus is a square frame structure that comprises four straight beams which cross each other at their ends to form a cross beam arrangement. However, the expansion apparatus is not limited to being a square frame structure, and may have a circular, or any multi-sided frame structure. The crossed ends of the straight beams are connected by one or more curved beams, which also form iris supporting portions. The iris supporting portion is shaped in an open, curved form so as to be perpendicular to the plane formed by the frame. It receives the rim of the iris tissue when the pupil expansion apparatus is in its extended position and gently presses the iris to the periphery. | 08-07-2014 |
20140277016 | TORIC AXIS MARKER - A toric axis marker has a handle, a coaxial tip, a head upon the tip, a dial axially above the head, and a marker head with two blades connecting to the dial. The dial and blades rotate simultaneously and concentrically upon the head. The head and its components have a central aperture for a surgeon to use in positioning the marker relative to the center of an eye. The marker head has its two blades upon a common diameter. The dial has two symmetric arcuate windows that reveal an angle scale. The marker body has an inwardly offset angle to the handle. Each blade has a blunt edge outwardly from the marker head and a slightly curved shape that conforms to the shape of an eyeball, proximate the cornea. With the blades positioned, a surgeon marks the cornea with an ink for incision locations. | 09-18-2014 |