Abstract: A surgical handpiece having at least two lumens mounted to a body. At least one lumen is used for aspiration and at least one other lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is enlarged to form a pumping chamber. The pumping chamber works by boiling a small volume of the surgical fluid. As the fluid boils, it expands rapidly, thereby propelling the liquid downstream of the pumping chamber out of the second lumen. The pumping chamber may use any type of heater, such as a resistive heater or an induction heater. The handpiece may also contain other lumens for injecting relatively cool surgical fluid.
Type:
Grant
Filed:
August 16, 1999
Date of Patent:
August 29, 2000
Assignee:
Alcon Laboratories, Inc.
Inventors:
Glenn Sussman, Thomas G. Capetan, Donald M. Cohen
Abstract: Various embodiments of optical fiber cables and laser probes are disclosed for providing multi-spot laser beams from a single laser beam source. This permits time-intensive but repetitive laser surgical procedures such as panretinal photocoagulation to be performed with increased accuracy and in a fraction of the time currently allotted for such procedures.
Abstract: Cyclobutane analogs of PGF.sub.2.alpha., PGD.sub.2, and PGE.sub.2 and methods of their use in treating glaucoma and ocular hypertension are disclosed.
Abstract: A method for polishing articles comprising soft acrylic materials is disclosed. The method includes a polishing step and a cleaning step. In the polishing step, a receptacle is charged with polishing beads of various sizes, alumina, a swelling agent and the articles to be polished, and agitated for a period of time and at a speed sufficient to remove surface irregularities. Following the polishing step, the polished articles are cleaned by agitating them with a cleaning slurry comprising cleaning beads of various sizes, alumina, a solvent and a surfactant for a period of time and at a speed sufficient to clean the surface of the polished articles. Agitation is preferably accomplished by a tumbling machine.
Abstract: A lens injector cartridge having an asymmetric bore. The asymmetric bore initiate; the folding of the lens on one side only, thereby reducing the amount of energy imparted to the lens and the potential for damage to the lens. The gentle folding of the lens also assists in positioning the travel of the haptics down the bore, thereby reducing the potential for damage to the haptics.
Type:
Grant
Filed:
April 19, 1999
Date of Patent:
July 4, 2000
Assignee:
Alcon Laboratories, Inc.
Inventors:
Stephen J. Van Noy, Kyle Brown, David A. Downer, David Eister, Lars D. Jensen
Abstract: A surgical handpiece having at least two lumens mounted to a body. At least one lumen is used for aspiration and at least one other lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is enlarged to form a pumping chamber. The pumping chamber works by boiling a small volume of the surgical fluid. As the fluid boils, it expands rapidly, thereby propelling the liquid downstream of the pumping chamber out of the second lumen. The pumping chamber may use any type of heater, such as a resistive heater or an induction heater. The handpiece may also contain other lumens for injecting relatively cool surgical fluid.
Type:
Grant
Filed:
June 4, 1998
Date of Patent:
June 27, 2000
Assignee:
Alcon Laboratories, Inc.
Inventors:
Glenn Sussman, Thomas G. Capetan, Donald M. Cohen
Abstract: A handpiece having two sets of piezoelectric elements. One set of elements is polarized to produce longitudinal motion. The other set of elements is polarized to produce torsional motion. An appropriate ultrasound driver drives each set of elements at their respective resonant frequencies to produce longitudinal vibration and torsional oscillation.
Abstract: Ophthalmic suspensions containing brinzolamide or brinzolamide and a beta-blocker and processes for manufacturing the suspensions are disclosed.
Type:
Grant
Filed:
July 2, 1997
Date of Patent:
June 6, 2000
Assignee:
Alcon Laboratories, Inc.
Inventors:
Yusuf Ali, Robert E. Beck, Rex C. Sport
Abstract: Compositions containing a stable, liquid, ophthalmically acceptable enzyme and methods involving the combined use of these compositions with a polymeric antimicrobial agent are disclosed for the simultaneous cleaning and disinfecting of contact lens. Methods for a daily use regimen are also disclosed.
Abstract: Various embodiments of optical fiber cables and laser probes are disclosed for providing multi-spot laser beams from a single laser beam source. This permits time-intensive but repetitive laser surgical procedures such as panretinal photocoagulation to be performed with increased accuracy and in a fraction of the time currently allotted for such procedures.
Abstract: A cassette having, in a first embodiment, a series of break-off, prismatic tabs integrally formed in the cassette that can be optically sensed by the surgical instrument.
Abstract: The invention relates to polymeric quaternary ammonium compounds which are useful as disinfectants and/or preservatives in ophthalmic compostions.
Abstract: 16.alpha., 17.alpha.-dialkylated steroids are prepared by reacting a 16.alpha.-alkyl-17(20)-enyl-20-silyl ether with an alkylating agent and an enol silyl ether cleaving agent in a suitable solvent.
Abstract: An apparatus for tuning and controlling an ultrasonic handpiece having a programmable broad spectrum source, a torsional single frequency source and a longitudinal single frequency source that generate a drive signal for an ultrasonic handpiece and a digital signal processor for analyzing a response signal generated by the handpiece in response to the drive signal and generating an adjusting signal for adjusting the torsional single frequency source and the longitudinal single frequency source.
Abstract: Substituted tetrahydrofuran analogs of F-series prostaglandins and methods of their use in treating glaucoma and ocular hypertension are disclosed.
Type:
Grant
Filed:
July 2, 1998
Date of Patent:
February 15, 2000
Assignee:
Alcon Laboratories, Inc.
Inventors:
Robert D. Selliah, Mark R. Hellberg, Peter G. Klimko, Verney L. Sallee, Paul W. Zinke