Patent application number | Description | Published |
20090012507 | METHOD FOR PATTERNED PLASMA-MEDIATED MODIFICATION OF THE CRYSTALLINE LENS - A method of treating a lens of a patient's eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern of the light beam, delivering the treatment pattern to the lens of a patient's eye to create a plurality of cuts in the lens in the form of the treatment pattern to break the lens up into a plurality of pieces, and removing the lens pieces from the patient's eye. The lens pieces can then be mechanically removed. The light beam can be used to create larger segmenting cuts into the lens, as well as smaller softening cuts that soften the lens for easier removal. | 01-08-2009 |
20100137850 | Method For Patterned Plasma-Mediated Modification Of The Crystalline Lens - A method of treating a lens of a patient's eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern of the light beam, delivering the treatment pattern to the lens of a patient's eye to create a plurality of cuts in the lens in the form of the treatment pattern to break the lens up into a plurality of pieces, and removing the lens pieces from the patient's eye. The lens pieces can then be mechanically removed. The light beam can be used to create larger segmenting cuts into the lens, as well as smaller softening cuts that soften the lens for easier removal. | 06-03-2010 |
20110184392 | METHOD FOR PATTERNED PLASMA-MEDIATED MODIFICATION OF THE CRYSTALLINE LENS - A method of treating a lens of a patient's eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern of the light beam, delivering the treatment pattern to the lens of a patient's eye to create a plurality of cuts in the lens in the form of the treatment pattern to break the lens up into a plurality of pieces, and removing the lens pieces from the patient's eye. The lens pieces can then be mechanically removed. The light beam can be used to create larger segmenting cuts into the lens, as well as smaller softening cuts that soften the lens for easier removal. | 07-28-2011 |
20110196350 | SYSTEM AND METHOD FOR PLASMA-MEDIATED MODIFICATION OF TISSUE - A system for cataract surgery on an eye of a patient is described. In one embodiment, the system comprises a first laser source configured to deliver a first laser beam in a pulsed form at a first pulse energy; a second laser source configured to deliver a second laser beam in a pulsed form at a second pulse energy greater than the first pulse energy; an scanning optical system, configured to: receive the first and second laser beams; and adjust a first focus position of the first laser beam, and a second focus position of the second laser beam, in up to three dimensions to direct the first and second laser beams onto one or more targeted tissue structure portions of the eye of the patient; a controller operatively coupled to the scanning optical system and configured to cause the scanning optical system to adjust the first focus position to photodisrupt a first tissue structure portion with the first laser beam, and subsequently adjust the second focus position to further photodisrupt the first tissue structure portion with the second laser beam. | 08-11-2011 |
20150025539 | METHOD, APPARATUS AND SYSTEM FOR A WATER JET - A water jet instrument may be used for manually performing eye surgery such as, cataract, or perform micro-surgery (remove cartilage), or any emulsification technique. The water jet instrument may be manually controlled or controlled by a system with a robotic control. The water jet apparatus defines a jet cutting area that is based at least in part on a flow rate meter and a feedback loop. | 01-22-2015 |
20150105762 | METHOD FOR PATTERNED PLASMA-MEDIATED MODIFICATION OF THE CRYSTALLINE LENS - A method of treating a cataractous lens of a patient's eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern, delivering the treatment pattern to the lens of the patient's eye to create a plurality of cuts in the form two or more different incisions patterns within the lens to segment the lens tissue into a plurality of patterned pieces, and mechanically breaking the lens into a plurality of pieces along the cuts. A first incision pattern includes two or more crossing cut incision planes. A second incision pattern includes a plurality of laser incision each extending along a first length between a posterior and an anterior surface of the lens capsule. | 04-16-2015 |
20150105763 | METHOD FOR PATTERNED PLASMA-MEDIATED MODIFICATION OF THE CRYSTALLINE LENS - A system for treating a cataractous lens of a patient's eye includes a laser source for generating a light beam, a scanning system for deflecting the light beam to form a treatment pattern of the light beam, and a controller operably coupled to the laser source and scanning system and configured to operate the scanner to form the treatment pattern. The treatment pattern is a plurality of cuts in the form two or more different incision patterns for segmenting the lens tissue into a plurality of patterned pieces. The incision pattern includes: a first incision pattern including two or more crossing cut incision planes; and a second incision pattern comprising one or more laser incision each extending along a first length between a posterior and an anterior surface of the lens capsule. | 04-16-2015 |
20150230987 | SYSTEM AND METHOD FOR PLASMA-MEDIATED MODIFICATION OF TISSUE - A method for cataract surgery on an eye of a patient includes scanning a first focus position of a first pulsed laser beam at a first pulse energy of between one-half microjoule and 50 microjoules in a first scanning pattern to photodisrupt a first tissue structure portion with a plurality of pulses of the first laser beam to form an incised surface; and afterwards, scanning a second focus position of a second pulsed laser beam having a second pulse energy being between 50 microjoules and 5,000 microjoules in a second scanning pattern that is co-registered to the first scanning pattern to further photodisrupt the same first tissue structure portion with the second laser beam to further separate segments of the first tissue structure along the incised surface. | 08-20-2015 |
Patent application number | Description | Published |
20110101897 | DC BUS BOOST METHOD AND SYSTEM FOR REGENERATIVE BRAKE - Embodiments of the present invention provide novel techniques for using a switched converter to provide for three-phase alternating current (AC) rectification, regenerative braking, and direct current (DC) voltage boosting. In particular, one of the three legs of the switched converter is controlled with a set of pulse width modulation (PWM) control signals so that the input AC phase having the highest voltage is rectified and one of the switches in the two other legs is turned on to allow for added voltage. This switching activity allows for voltage from multiple AC line mains to be combined, resulting in an overall boost of the DC voltage of the rectifier. The DC voltage boost can then be applied to the common DC bus in order to ameliorate voltage sags, help with motor starts, and increase the ride-through capability of the motor. | 05-05-2011 |
20110130993 | DIGITAL IMPLEMENTATION OF A TRACKING FILTER - Methods and systems for tracking an electronic signal corresponding to an operating frequency of an electronic component are provided. A method may include sampling the signal to determine previous and current time samples of the signal. A frequency of interest in the signal may also be pre-warped to decrease adverse warping effects resulting from processing signals having relatively higher operating frequencies. The previous and current time samples of the signals, along with the pre-warped frequency of interest, may be input into a digital tracking filter. The digital tracking filter may be configured to execute one or more algorithms on the previous and current time samples and the pre-warped frequency of interest to estimate a current operating frequency. | 06-02-2011 |
20120235607 | DC BUS BOOST METHOD AND SYSTEM FOR REGENERATIVE BRAKE - Embodiments of the present invention provide novel techniques for using a switched converter to provide for three-phase alternating current (AC) rectification, regenerative braking, and direct current (DC) voltage boosting. In particular, one of the three legs of the switched converter is controlled with a set of pulse width modulation (PWM) control signals so that the input AC phase having the highest voltage is rectified and one of the switches in the two other legs is turned on to allow for added voltage. This switching activity allows for voltage from multiple AC line mains to be combined, resulting in an overall boost of the DC voltage of the rectifier. The DC voltage boost can then be applied to the common DC bus in order to ameliorate voltage sags, help with motor starts, and increase the ride-through capability of the motor. | 09-20-2012 |
20130120038 | Phase-Locked-Loop with Quadrature Tracking Filter for Synchronizing an Electric Grid - Methods and systems for synchronizing an electric grid having unbalanced voltages are provided. A voltage vector may be filtered in a quadrature tracking filter (QTF) to generate a quadrature signal. A phase-locked-loop (PLL) operation may be performed on the quadrature signal to monitor a voltage vector between the grid and a connected power converter. The QTF and PLL methods are suitable for either single-phase applications or n-phase (any number of phases) applications. A frequency estimator estimates the grid frequency of the electric grid and outputs the estimated frequency to the QTF algorithms. The frequency estimator may include a three-phase phase-locked-loop (three-phase PLL) suitable for estimating the center frequencies of multiple phases of the electric grid. The frequency estimator may also include means for reducing the harmonics in the grid system. | 05-16-2013 |
20130120039 | Phase-Locked-Loop with Quadrature Tracking Filter for Synchronizing an Electric Grid - Methods and systems for synchronizing an electric grid having unbalanced voltages are provided. A voltage vector may be filtered in a quadrature tracking filter (QTF) to generate a quadrature signal. The inputs to the QTF may be either single input, multiple outputs, or alternatively, multiple inputs, multiple outputs. Furthermore, the second state of either of the two QTF transformations may be either positive or negative. A phase-locked-loop (PLL) operation may be performed on the quadrature signal to monitor a voltage vector between the grid and a connected power converter. The QTF and PLL methods are suitable for either single-phase applications or n-phase (any number of phases) applications. | 05-16-2013 |
20130124125 | DIGITAL IMPLEMENTATION OF A TRACKING FILTER - Methods and systems for tracking an electronic signal corresponding to an operating frequency of an electronic component are provided. A method may include sampling the signal to determine previous and current time samples of the signal. A frequency of interest in the signal may also be pre-warped to decrease adverse warping effects resulting from processing signals having relatively higher operating frequencies. The previous and current time samples of the signals, along with the pre-warped frequency of interest, may be input into a digital tracking filter. The digital tracking filter may be configured to execute one or more algorithms on the previous and current time samples and the pre-warped frequency of interest to estimate a current operating frequency. | 05-16-2013 |
20140003102 | ADAPTIVE ONLINE FILTER FOR DC OFFSET ELIMINATION | 01-02-2014 |
20140035492 | SINGLE PHASE OPERATION OF A THREE-PHASE DRIVE SYSTEM - Single-phase voltage operation techniques are provided for a three-phase drive system. A drive system may include a rectifier configured to couple to a three-phase AC voltage source. The rectifier may be configured to convert AC voltage from the three-phase AC voltage source to a direct current (DC) voltage. The drive system may also include a controller configured to send a plurality of switching signals to a plurality of switches in the rectifier such that the plurality of switching signals minimizes a current provided to the rectifier when only a single-phase of the three-phase AC voltage source is available. | 02-06-2014 |
20150077167 | ADAPTIVE ONLINE FILTER FOR DC OFFSET ELIMINATION - A phase angle detector with a PLL, a power converter, and a method for reducing offsets in an input signal, in which an adaptive offset processor selectively removes a DC offset component from the input signal to generate a modified signal including a fundamental frequency component and higher order harmonics of the input signal with the DC offset component removed, and the PLL provides a phase angle signal at least partially according to the modified signal. | 03-19-2015 |
20150123700 | INDUSTRIAL SYSTEM PHASE SAG DETECTION - Described herein are methods, systems, and apparatuses for determining sag in a signal. In one example, a method of tracking sag in a signal includes, when in an initial state, monitoring for when the signal transitions to a sag state based at least on an output of a tracking filter. In response to the signal transitioning to the sag state, increasing a bandwidth of the tracking filter and, when in the sag state, monitoring for when the signal transitions to a recovering state. The method further includes, in response to the signal transitioning to the recovering state, decreasing the bandwidth of the tracking filter. | 05-07-2015 |
20150153397 | IMPEDANCE DETECTOR APPARATUS AND METHOD - Impedance detection methods and systems are presented for automatic computation of an electrical component impedance value at one or more specific frequencies of interest using quadrature voltage and current values generated by quadrature tracking filters based on sensed or measured voltage and current signals or values and a base frequency input. | 06-04-2015 |
Patent application number | Description | Published |
20090024191 | MULTI-CLADDING OPTICAL FIBER SCANNER - A multi-cladding optical fiber includes a core that conveys visible light used by a scanner for imaging a site within a patient's body, and an inner cladding that conveys high-power light, such as infrared light, used for providing therapy to site. The distal end of multi-cladding optical fiber is driven to scan the site when imaging or rendering therapy using an actuator. High-power light is coupled into inner cladding at proximal end of optical fiber using several different techniques. Some techniques use an axicon to direct the high-power light into the inner cladding, while visible light is coupled directly into the core. Another technique uses a multimode optical fiber in a coupling relationship with the multi-cladding optical fiber, to transfer high-power light from a core of the multimode fiber into the inner cladding of the multi-cladding optical fiber. | 01-22-2009 |
20090028407 | SCANNING BEAM WITH VARIABLE SEQUENTIAL FRAMING USING INTERRUPTED SCANNING RESONANCE - A scanning device for use in an endoscope or other applications can be driven to scan a region with one or more different scanning parameters during successive scanning frames. The scanning device, which can include an optical fiber or reflective surface driven by an actuator to move relative to one or more axes, can be provided with a drive signal that is different during successive scanning frames so that the scanning pattern can be caused to differ between the successive scanning frames by one or more of size, amplitude in at least one direction, depth, duration, shape, and resolution. Thus, different scanning frames can be employed for imaging, carrying out a diagnosis, rendering a therapy, and/or monitoring a site, using the appropriate scanning pattern, appropriate light source, and other parameters for each function that is carried out by the scanning device. | 01-29-2009 |
20090135280 | ELIMINATING ILLUMINATION CROSSTALK WHILE IMAGING USING MULTIPLE IMAGING DEVICES - A system includes a plurality of scanning devices and light receivers, enabling a plurality of images of a site to be displayed using output signals produced in response to light from the light receivers. To avoid crosstalk caused by light receivers receiving light emitted by a plurality of scanning devices, different wavebands of light can be applied to different scanning devices, the received light can be filtered, or the light can be supplied to one scanning device at a time to multiplex either frame-by-frame, or pixel-by-pixel, or the light supplied to each scanning device can be modulated and the received light demodulated so that an image is produced in response to light from a single scanning device. Expensive components such as laser light sources, optical detectors, a controller, and processor can be shared by multiple imaging devices to minimize the cost of the imaging system. | 05-28-2009 |
20090137893 | ADDING IMAGING CAPABILITY TO DISTAL TIPS OF MEDICAL TOOLS, CATHETERS, AND CONDUITS - One or more scan illuminators and a plurality of light receivers are provided on the distal end of a tool or other component, so that a plurality of images of a site can be provided in response to output signals from the plurality of light receivers. The output signals from the plurality of light receivers are combined to produce an overall image of the site or a plurality of different images from disparate positions. The plurality of images can be viewed separately to produce a stereo or perspective view, or can be produced using different wavebands of light to provide enhanced information about the site that facilitates use of one or more tools or components at the site. The scan illuminator(s) and plurality of light receivers can be configured to be added to an existing tool or component. | 05-28-2009 |
20090208143 | EFFICIENT AUTOMATED UROTHELIAL IMAGING USING AN ENDOSCOPE WITH TIP BENDING - A scanning fiber endoscope (SFE) disposed at the distal end of a flexible, small diameter imaging probe is inserted through a relatively small opening and into a larger volume, such as the bladder. Actuators disposed adjacent to the distal end of the imaging probe are selectively activated to bend the distal end of the imaging probe to assist in positioning and orienting the SFE at a plurality of points selected to image substantially all of at least a desired portion of the interior surface of the volume. The insertion depth, bending arc, and rotational position of the imaging probe can be manually and/or automatically controlled. The user can inspect the images to determine if a desired portion of the surface has been imaged and can thus ensure that a tumor or other characteristic of the surface is not overlooked due to a failure to image it. | 08-20-2009 |
Patent application number | Description | Published |
20100211409 | ORGANIZING MEDICAL IMAGES FOR DISPLAY - The subject matter of this specification can be implemented in, among other things, a system for interfacing with multiple medical imaging modalities that includes a manifest generator for generating a manifest of medical images. The manifest can be used to determine an ordering or a layout of the medical images generated by the modalities, optionally as a function of the modality type, anatomical area, and other variables. In some embodiments, the various medical images and metadata may be received at an image order management system that parses the metadata and assembles the metadata into the manifest files that may be transmitted independently to remote interpretation sites, which in turn may be equipped with image viewer applications that analyze the manifest files and determine a rearranged ordering and/or grouping of the medical images, wherein the rearrangement is executed as a function of modality, anatomy, orientation and other variables. | 08-19-2010 |
20120310668 | ORGANIZING MEDICAL IMAGES FOR DISPLAY - The subject matter of this specification can be implemented in, among other things, a system for interfacing with multiple medical imaging modalities that includes a manifest generator for generating a manifest of medical images. The manifest can be used to determine an ordering or a layout of the medical images generated by the modalities, optionally as a function of the modality type, anatomical area, and other variables. In some embodiments, the various medical images and metadata may be received at an image order management system that parses the metadata and assembles the metadata into the manifest files that may be transmitted independently to remote interpretation sites, which in turn may be equipped with image viewer applications that analyze the manifest files and determine a rearranged ordering and/or grouping of the medical images, wherein the rearrangement is executed as a function of modality, anatomy, orientation and other variables. | 12-06-2012 |