Patent application number | Description | Published |
20090156912 | IMPLANTABLE OPTICAL SENSOR AND METHOD FOR MANUFACTURE - An implantable optical sensor and associated manufacturing method include a sensor housing having an inner surface and an outer surface and a window formed in the housing extending between the housing inner surface and the housing outer surface. An opto-electronic device enclosed within the housing and having a photonic surface is operatively positioned proximate the window for emitting light through the window or detecting light through the window. An optical coupling member is positioned between the opto-electronic device and the window for reducing light reflection at a surface within the implantable optical sensor. | 06-18-2009 |
20090156918 | IMPLANTABLE OPTICAL SENSOR AND METHOD FOR USE - An implantable medical device includes a hermetically sealed housing and a first light emitting diode (LED) enclosed within the housing configured to detect light corresponding to a selected light wavelength. A conductive element extends from the LED for carrying a current signal corresponding to the light detected by the LED, the intensity of the detected light being correlated to a change in a physiological condition in a body fluid volume or a tissue volume proximate the LED. | 06-18-2009 |
20090270953 | Optical Device - A reflectance-type optical sensor includes one or more photodiodes formed in a semiconductor substrate. A well having sidewalls and a bottom is formed in the top surface of the substrate, and a reflective layer is formed on the sidewalls and bottom. A light-emitting diode (LED) is mounted in the well, so that light emitted laterally and rearwardly from the LED strikes the sidewalls or bottom and is redirected in a direction generally perpendicular to the top surface of the substrate. The optical sensor can be fabricated using microelectromechanical systems (MEMS) fabrication techniques. | 10-29-2009 |
20100185262 | CO-LOCATION OF EMITTERS AND DETECTORS AND METHOD OF OPERATION - An implantable medical device having an optical sensor selects the function of modular opto-electronic assemblies included in the optical sensor. Each assembly is provided with at least one light emitting device and at least one light detecting device. A device controller coupled to the optical sensor controls the function of each the assemblies. The controller executes a sensor performance test and selects at least one of the plurality of assemblies to operate as a light emitting assembly in response to a result of the performance test. The controller selects at least one other of the plurality of optical sensor assemblies to operate as a light detecting assembly in response to a result of the performance test | 07-22-2010 |
20120232354 | OPTICAL SENSOR SYSTEM AND MEASUREMENT METHOD - A medical device including an optical sensor is configured to measure an optical signal by integrating a current induced on a light detector of the optical sensor to obtain a voltage signal. The voltage signal is compared to a threshold. Responsive to the voltage signal reaching the threshold, an optical sensor control parameter is adjusted. The optical sensor is operated to produce the voltage signal using the adjusted control parameter. | 09-13-2012 |
20120265189 | METHOD OF CAUTERIZATION WITH A CRYOPROBE - The invention is a method for using a cryoprobe for cryoablating, thawing and/or cauterizing a tissue during a cryosurgical procedure. An embodiment of the cryosurgical system comprises a controller including a cryoprobe with an electrical heating element. The controller operates the electrical heating element for heating a treatment head of the cryoprobe to a temperature sufficient for cauterizing the tissue in the vicinity of the treatment head. Additionally, the controller regulates a supply of a heating gas and a cooling gas, respectively, for thawing and cryoablating the tissue in the vicinity of the treatment head. The controller is configured for operating a plurality of cryoprobes connected thereto. | 10-18-2012 |
20120265452 | METHOD OF MONITORING GAS SUPPLY DURING A CRYOSURGICAL PROCEDURE - The invention is a method for monitoring an amount of gas available in a cryosurgical system used for conducting a cryosurgical procedure. Based on information pertaining to a planned cryosurgical procedure, cryoprobe-specific information for each cryoprobe connected to the cryosurgical system, the specified volumetric capacity of a cryogas source, and measured pressure of the gas in the cryogas source, the method determines the mass flow rates of gas flowing through each cryoprobe, the total mass flow rate of the gas through the cryosurgical system, and the mass of the gas in the cryogas source at standard atmospheric conditions. The amount of time available for completing the cryosurgical procedure before the cryogas source is expended is determined as the arithmetic ratio of the mass of the gas in the cryogas source to the total mass flow rate of the gas through the cryosurgical system. | 10-18-2012 |
20150190640 | LEAD ELECTRODE FOR USE IN AN MRI-SAFE IMPLANTABLE MEDICAL DEVICE - An implantable stimulation system comprises a stimulator for generating electrical stimulation and a conductive stimulation lead having a proximal end electrically coupled to the stimulator, wherein at least a first component of the impedance looking into the stimulator is substantially matched to the impedance of the stimulation lead. At least one distal stimulation electrode is positioned proximate the distal end of the stimulation lead. | 07-09-2015 |