Patent application number | Description | Published |
20100107723 | Calibration Utility for Non-Linear Measurement System - Methods and apparatuses are provided for calibrating a vacuum component of a phacoemulsification system at different elevations. The design comprises running a vacuum component to be calibrated at an elevation; determining a maximum vacuum pressure available at the elevation; determining a range of vacuum pressure available from running the vacuum component at the elevation; calibrating the vacuum component based at least in part on a the maximum vacuum pressure available and the range of vacuum pressure available. The design also comprises a to be calibrated vacuum component; a pressure delivery device; an altimeter configured to determine the elevation of the vacuum component; component reading hardware configured to read at least one measured value from the pressure sensing components of the vacuum component when exposed to at least one pressure value from the pressure delivery device; and a computer configured to correlate a plurality of measured values to the elevation. | 05-06-2010 |
20100121257 | CAPACITIVE FLUID LEVEL SENSING - A capacitive fluid level sensing arrangement for use in a medical device is provided. The arrangement includes at least one pair of conductive plates configured to increase and decrease the amount of electric charge stored in relation to the level of fluid within a fluid maintaining device, such as a reservoir. The conductive plates are electrically connected to a medical device and are configured to measure the charge stored between the plates and thus sense the fluid level. The electric circuit may communicate the measurement to an instrument host arrangement for operating a pump configured to remove fluid from the reservoir and move the fluid to a collector when the level exceeds a preset upper level amount. The instrument host arrangement may stop operating the pump when the fluid level is reduced to a preset lower level amount. | 05-13-2010 |
20100280434 | AUTOMATICALLY PULSING DIFFERENT ASPIRATION LEVELS TO AN OCULAR PROBE - Methods and systems for automatically pulsing different aspiration levels to an ocular probe are disclosed. The probe may be a phacoemulsification probe. A first aspiration level, supplied by a first pump, may be applied to the probe simultaneously with ultrasonic energy. A second aspiration level, supplied by a second pump, may be automatically switched from the first aspiration level, and applied to the probe in a pulsed manner. | 11-04-2010 |
20100280435 | AUTOMATICALLY SWITCHING DIFFERENT ASPIRATION LEVELS AND/OR PUMPS TO AN OCULAR PROBE - Methods and apparatuses for automatically switching different aspiration levels to an ocular probe are disclosed herein. The probe may be a phacoemulsification probe. A first aspiration level, supplied by a first pump, may be applied to the probe simultaneously with ultrasonic energy. A second aspiration level, supplied by a second pump, may be automatically switched from the first aspiration level. Control feed back of the pumps may be varied according to set thresholds. | 11-04-2010 |
20110092886 | MULTIPLE FREQUENCY PHACOEMULSIFICATION NEEDLE DRIVER - A system for performing an ocular surgical procedure is provided. The system includes a multiple frequency signal source, a configurable tuned output filter connected to the multiple frequency signal source, and a multiple frequency ultrasonic handpiece. The multiple frequency signal source operates at a first frequency and is configured to drive the configurable filter and the multiple frequency ultrasonic handpiece at the first frequency. The multiple frequency signal source operates at a second frequency and is configured to drive the configurable filter and the multiple frequency ultrasonic handpiece at the second frequency, and the design addresses third harmonic frequency issues for the multiple frequency ultrasonic handpiece. Switchable passive components, such as inductors, resistors, and/or capacitors may be employed in the configurable tuned output circuit, or alternately multiple similar circuits may be employed. Alternately, a multi-tap transformer may be provided. | 04-21-2011 |
20130261539 | CAPACITIVE FLUID LEVEL SENSING - A capacitive fluid level sensing arrangement for use in a medical device is provided. The arrangement includes at least one pair of conductive plates configured to increase and decrease the amount of electric charge stored in relation to the level of fluid within a fluid maintaining device, such as a reservoir. The conductive plates are electrically connected to a medical device and are configured to measure the charge stored between the plates and thus sense the fluid level. The electric circuit may communicate the measurement to an instrument host arrangement for operating a pump configured to remove fluid from the reservoir and move the fluid to a collector when the level exceeds a preset upper level amount. The instrument host arrangement may stop operating the pump when the fluid level is reduced to a preset lower level amount. | 10-03-2013 |
20140005707 | MULTIPLE FREQUENCY PHACOEMULSIFICATION NEEDLE DRIVER | 01-02-2014 |
20140088525 | HOLDING TANK DEVICES, SYSTEMS, AND METHODS FOR SURGICAL FLUIDICS CASSETTE - The present invention is directed to improved methods, devices, and systems for eye surgery. In some embodiments, the invention may provide new and/or improved devices, systems, and methods for detecting surgical fluids in a fluidics cassette, particularly cassettes which are used to couple an eye treatment probe to an eye treatment console. Rather than relying on internal reflection by a gas-liquid interface, the fluid detection techniques described herein may make use of the changes in propagation of light through a portion of the holding tank when the portion varies between empty and full. Other aspects of the invention may provide devices, systems, and methods for producing different types of fluidics cassette using a single cassette body type. | 03-27-2014 |
Patent application number | Description | Published |
20080221812 | DIFFERENTIATION OF FLOW CYTOMETRY PULSES AND APPLICATIONS - A method of analyzing pulses from a flow cytometer in which particles in a fluid pass through an excitation volume of an electromagnetic radiation and interact with the electromagnetic radiation to generate signals in the form of pulses includes generating a time-dependent pulse indicative of the characteristics of one or more particles passing through the excitation volume of the electromagnetic radiation, determining a measurement window by selecting a portion of the pulse with a starting point and an ending point above a predetermined value, and calculating a first derivative of the pulse with respect to time over the measurement window. | 09-11-2008 |
20090220989 | Particle-Based Analyte Characterization - Methods for assaying a sample for an analyte are provided. In various embodiments, the methods comprise contacting a sample suspected of containing the analyte with a non-uniform particle comprising a capture molecule, and further contacting the particle with a detection moiety comprising a label that permits detection of the analyte when associated with the particle. The methods may be performed to detect and/or quantitate analyte in the sample. In some embodiments, the methods may be performed in an automated manner, and may use an optical and/or cytometric apparatus for performing the method(s). The methods may further be performed with automated vessel-processing apparatus(es), such as plate loaders, plate washers, etc. Also provided are complexes containing the described materials formed by an assay of the invention, including excited state complexes. Kits useful for performing such methods are also provided. | 09-03-2009 |
20110063602 | DIFFERENTIATION OF FLOW CYTOMETRY PULSES AND APPLICATIONS - A method of analyzing pulses from a flow cytometer in which particles in a fluid pass through an excitation volume of an electromagnetic radiation and interact with the electromagnetic radiation to generate signals in the form of pulses includes generating a time-dependent pulse indicative of the characteristics of one or more particles passing through the excitation volume of the electromagnetic radiation, determining a measurement window by selecting a portion of the pulse with a starting point and an ending point above a predetermined value, and calculating a first derivative of the pulse with respect to time over the measurement window. | 03-17-2011 |
20120236291 | DIFFERENTIATION OF FLOW CYTOMETRY PULSES AND APPLICATIONS - A method of analyzing pulses from a flow cytometer in which particles in a fluid pass through an excitation volume of an electromagnetic radiation and interact with the electromagnetic radiation to generate signals in the form of pulses includes generating a time-dependent pulse indicative of the characteristics of one or more particles passing through the excitation volume of the electromagnetic radiation, determining a measurement window by selecting a portion of the pulse with a starting point and an ending point above a predetermined value, and calculating a first derivative of the pulse with respect to time over the measurement window. | 09-20-2012 |