Patent application number | Description | Published |
20110009916 | METHOD AND DEVICE FOR THREE-STAGE ATRIAL CARDIOVERSION THERAPY - Methods and apparatus for a three-stage atrial cardioversion therapy that treats atrial arrhythmias within pain tolerance thresholds of a patient. An implantable therapy generator adapted to generate and selectively deliver a three-stage atrial cardioversion therapy and at least two leads operably each having at least one electrode adapted to be positioned proximate the atrium of the patient. The device is programmed with a set of therapy parameters for delivering a three-stage atrial cardioversion therapy to the patient via both a far-field configuration and a near-field configuration of the electrodes upon detection of an atrial arrhythmia. The three-stage atrial cardioversion therapy includes a first stage for unpinning of one or more singularities associated with an atrial arrhythmia, a second stage for anti-repinning of the one or more singularities associated with the atrial arrhythmia, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities associated with the atrial arrhythmia delivered via the near-field configuration of the electrodes. | 01-13-2011 |
20150141767 | Organ Mounted Electronics - Provided are devices and methods capable of interfacing with biological tissues, such as organs like the heart, in real-time and using techniques which provide the ability to monitor and control complex physical, chemical, biochemical and thermal properties of the tissues as a function of time. The described devices and methods utilize micro scale sensors and actuators to spatially monitor and control a variety of physical, chemical and biological tissue parameters, such as temperature, pH, spatial position, force, pressure, electrophysiology and to spatially provide a variety of stimuli, such as heat, light, voltage and current. | 05-21-2015 |
Patent application number | Description | Published |
20090204164 | METHOD AND DEVICE FOR LOW-ENERGY TERMINATION OF ATRIAL TACHYARRHYTHMIAS - Methods for treating atrial arrhythmias can involve configuring an implantable arrhythmia treatment device. A device can be configured after implantation when the patient is fully conscious and after any pain suppression medication has worn off. The device is caused to apply a phased unpinning far field therapy to the patient in response to detection of an arrhythmia via a far field configuration of electrodes. An indication of a pain sensation of the patient and the effectiveness of the treatment in response to the therapy can then be received. In response, at least one of a set of therapy parameters is adjusted and the steps are repeated until it is determined that an effective treatment is provide at a pain sensation that is tolerable to the patient. The device is then programmed to automatically treat arrhythmias detected in the patient with the determined set of therapy parameters. | 08-13-2009 |
20120203297 | METHODS AND DEVICES FOR THREE-STAGE VENTRICULAR THERAPY - Methods and apparatus for a three-stage ventricular cardioversion and defibrillation therapy that treats ventricular tachycardia and fibrillation at low energy levels. An implantable therapy generator adapted to generate and selectively deliver a three-stage ventricular therapy and at least two leads operably each having at least one electrode adapted to be positioned proximate the ventricle of the patient. The device is programmed to deliver a three-stage therapy via both a far-field configuration and a near-field configuration of the electrodes upon detection of a ventricular arrhythmia. The three-stage therapy includes a first stage for unpinning of one or more singularities associated with the ventricular arrhythmia, a second stage for anti-repinning of the one or more singularities, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities associated delivered via the near-field configuration of the electrodes. | 08-09-2012 |
20120209343 | METHOD AND DEVICE FOR THREE-STAGE ATRIAL CARDIOVERSION THERAPY - Methods and apparatus for a three-stage atrial cardioversion therapy that treats atrial arrhythmias within pain tolerance thresholds of a patient. An implantable therapy generator adapted to generate and selectively deliver a three-stage atrial cardioversion therapy and at least two leads, each having at least one electrode adapted to be positioned proximate the atrium of the patient. The device is programmed for delivering a three-stage atrial cardioversion therapy via both a far-field configuration and a near-field configuration of the electrodes upon detection of an atrial arrhythmia. The three-stage atrial cardioversion therapy includes a first stage for unpinning of one or more singularities associated with an atrial arrhythmia, a second stage for anti-repinning of the one or more singularities, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities delivered via the near-field configuration of the electrodes. | 08-16-2012 |
20130013012 | METHOD FOR LOW-VOLTAGE TERMINATION OF CARDIAC ARRHYTHMIAS BY EFFECTIVELY UNPINNING ANATOMICAL REENTRIES - A method for extinguishing a cardiac arrhythmia utilizes destructive interference of the passing of the reentry wave tip of an anatomical reentry through a depolarized region created by a relatively low voltage electric field in such a way as to effectively unpin the anatomical reentry. Preferably, the relatively low voltage electric field is defined by at least one unpinning shock(s) that are lower than an expected lower limit of vulnerability as established, for example, by a defibrillation threshold test. By understanding the physics of the electric field distribution between cardiac cells, the method permits the delivery of an electric field sufficient to unpin the core of the anatomical reentry, whether the precise or estimated location of the reentry is known or unknown and without the risk of inducting ventricular fibrillation. A number of embodiments for performing the method are disclosed. | 01-10-2013 |
20140371804 | METHOD FOR LOW-VOLTAGE TERMINATION OF CARDIAC ARRHYTHMIAS BY EFFECTIVELY UNPINNING ANATOMICAL REENTRIES - A method for extinguishing a cardiac arrhythmia utilizes destructive interference of the passing of the reentry wave tip of an anatomical reentry through a depolarized region created by a relatively low voltage electric field in such a way as to effectively unpin the anatomical reentry. Preferably, the relatively low voltage electric field is defined by at least one unpinning shock(s) that are lower than an expected lower limit of vulnerability as established, for example, by a defibrillation threshold test. By understanding the physics of the electric field distribution between cardiac cells, the method permits the delivery of an electric field sufficient to unpin the core of the anatomical reentry, whether the precise or estimated location of the reentry is known or unknown and without the risk of inducting ventricular fibrillation. A number of embodiments for performing the method are disclosed. | 12-18-2014 |
20150045847 | METHOD AND DEVICE FOR THREE-STAGE ATRIAL CARDOIVERSION THERAPY - Methods and apparatus for a three-stage atrial cardioversion therapy that treats atrial arrhythmias within pain tolerance thresholds of a patient. An implantable therapy generator adapted to generate and selectively deliver a three-stage atrial cardioversion therapy and at least two leads, each having at least one electrode adapted to be positioned proximate the atrium of the patient. The device is programmed for delivering a three-stage atrial cardioversion therapy via both a far-field configuration and a near-field configuration of the electrodes upon detection of an atrial arrhythmia. The three-stage atrial cardioversion therapy includes a first stage for unpinning of one or more singularities associated with an atrial arrhythmia, a second stage for anti-repinning of the one or more singularities, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities delivered via the near-field configuration of the electrodes. | 02-12-2015 |
20150151134 | Methods and Devices for Three-Stage Ventricular Therapy - Methods and apparatus for a three-stage ventricular cardioversion and defibrillation therapy that treats ventricular tachycardia and fibrillation at low energy levels. An implantable therapy generator adapted to generate and selectively deliver a three-stage ventricular therapy and at least two leads operably each having at least one electrode adapted to be positioned proximate the ventricle of the patient. The device is programmed to deliver a three-stage therapy via both a far-field configuration and a near-field configuration of the electrodes upon detection of a ventricular arrhythmia. The three-stage therapy includes a first stage for unpinning of one or more singularities associated with the ventricular arrhythmia, a second stage for anti-repinning of the one or more singularities, both of which are delivered via the far-field configuration of the electrodes, and a third stage for extinguishing of the one or more singularities associated delivered via the near-field configuration of the electrodes. | 06-04-2015 |
20150367139 | Method for Low-Voltage Termination of Cardiac Arrhythmias by Effectively Unpinning Anatomical Reentries - A method for extinguishing a cardiac arrhythmia utilizes destructive interference of the passing of the reentry wave tip of an anatomical reentry through a depolarized region created by a relatively low voltage electric field in such a way as to effectively unpin the anatomical reentry. Preferably, the relatively low voltage electric field is defined by at least one unpinning shock(s) that are lower than an expected lower limit of vulnerability as established, for example, by a defibrillation threshold test. By understanding the physics of the electric field distribution between cardiac cells, the method permits the delivery of an electric field sufficient to unpin the core of the anatomical reentry, whether the precise or estimated location of the reentry is known or unknown and without the risk of inducting ventricular fibrillation. A number of embodiments for performing the method are disclosed. | 12-24-2015 |
Patent application number | Description | Published |
20100118295 | System and Method for Measuring a Laser-Induced Damage Threshold in an Optical Fiber - A system for measuring a laser-induced damage threshold in an optical fiber may include a lens to direct a first laser beam through a core of the optical fiber. The system may also include an optical arrangement to direct a second laser beam through an exterior surface of the optical fiber and into the core of the optical fiber at a preselected location of the optical fiber to provide a predetermined power density at the preselected location, wherein the optical arrangement causes the second laser beam to be directed into the optical fiber substantially completely around a perimeter of the optical fiber to provide the predetermined power density. | 05-13-2010 |
20130050829 | BEAMSPLITTER AND METHOD OF BEAMSPLITTING - A beamsplitter for splitting the light of an incident beam into four separate beams. The beamsplitter includes a pair of gratings each disposed preferably normal to the incident beam and having grating vectors preferably orthogonal to one another. The pair of gratings may be formed on opposite sides of a common substrate. A method of splitting an incident, collimated beam of light of a given wavelength into four separate collimated beams each disposed at angles of elevation θ | 02-28-2013 |
20150177381 | Optical Angle of Arrival Sensors and Methods for Determining an Angle of Arrival of Incident Light - Optical angle of arrival sensors and methods for determining an angle of arrival of incident light are provided, wherein one sensor includes a focusing lens and an array of lateral-effect position sensing detector (LEPSD) elements. The focusing lens is configured to focus light on the array, wherein each of the LEPSD elements includes an absorber region that absorbs light of a first wavelength range that is focused on the LEPSD elements. Each of the LEPSD elements further includes at least one lateral current conducting layer that has a relatively low sheet resistance. | 06-25-2015 |
20150378012 | SINGLE CHIP SCANNING LIDAR AND METHOD OF PRODUCING THE SAME - A chip-scale scanning lidar includes a two dimensional (2D) scanning micromirror for a transmit beam and a 2D scanning micromirror for a receive beam, a laser diode and a photodetector, a first waveguide and first grating outcoupler coupled to a front facet of the laser diode, a second waveguide and a second grating outcoupler coupled to a rear facet of the laser diode on a substrate. A first fixed micromirror, a second micromirror, a third micromirror, and a focusing component are in a dielectric layer bonded to the substrate over the laser diode and photodetector. The photodetector is optically coupled to the second fixed micromirror and the third fixed micromirror for coherent detection. | 12-31-2015 |