Abstract: Disclosed embodiments include a method for retinal image analysis implemented in a medical system with one or more processors comprising the method steps of: (a) locating an optical disk on the retinal images and establishing a plurality of circumferences centered at the disk; (b) detecting a plurality of vessels within a region defined by said circumferences' radii using a crease-based algorithm; (c) extracting a plurality of vessel segments based on a deformable models (snakes) algorithm; (d) measuring a plurality of vessel calibers; (e) classifying each vessel as a vein and an artery; and (f) computing an arteriolar-to-venular ratio.
Type:
Grant
Filed:
February 1, 2011
Date of Patent:
January 8, 2013
Assignees:
Universidade da Coruna-Otri, Universidade de Santiago de Compostela, Servicio Galego de Saude (Sergas)
Inventors:
Manuel F. González Penedo, Noelia Barreira Rodriguez, Marcos Ortega Hortas, Antonio Mosquera González, Maria Jose Carreira Nouche, Francisco Gomez-Ulla de Irazazabal, Antonio Pose Reino
Abstract: Disclosed embodiments include an apparatus for water sampling and analysis, the apparatus comprising: (a) a device for water sampling at a plurality of depths comprising a hosepipe and a plurality of internal independent pipes with a plurality of sampling inlets at a plurality of water depths, and (b) a pumping system to pump a sample of water collected using the device for water sampling at a plurality of depths to an isolated module for analysis. According to one embodiment, the apparatus is an autonomous multi-parametric buoy with capabilities for multi-depth water sampling, self-maintenance, monitoring, data collection, transmission, and analysis.
Type:
Grant
Filed:
July 7, 2010
Date of Patent:
November 20, 2012
Assignee:
Centro de Investigaciones Submarinas S.L.
Inventors:
Carlos Duran Neira, Xulio Fernandez Hermida
Abstract: The invention disclosed includes a method and apparatus for calculation of T-wave alternas in electrocardiographic (ECG) signals; said method comprises the following method steps: (a) collecting and storing an ECG signal; (b) detecting each heartbeat T-wave in the ECG signal using an automatic detection and segmentation algorithm; (c) classifying said heartbeat T-wave as an even or odd heartbeat T-wave; (d) initializing said method by taking the first even and the first odd heartbeat T-wave as their respective initial average; (e) processing all the heartbeat T-waves in the ECG signal to generate an even heartbeat T-wave weighted average and odd heartbeat T-wave weighted average; and (f) calculating TWA using a distance metric between the even heartbeat weighted average and the odd heartbeat weighted average, said distance metric including curve matching Continuous Dynamic Time Warping (CDTW).
Type:
Grant
Filed:
June 8, 2009
Date of Patent:
November 20, 2012
Assignee:
Universidad Politecnica de Valencia
Inventors:
David Cuesta Frau, Pedro Mateo Riobo Aboy
Abstract: Disclosed embodiments include methods for cleaning wax, substantially equivalent impurities, and other contaminants from porous stones in historical monuments and artworks using nondestructive means. According to one embodiment the method for removal of contaminants from porous stones using laser comprises the following method steps: (a) identifying regions of a contaminant on the porous stone monument; (b) characterizing the contaminant on the porous stone monument; (c) exposing the contaminant on the porous stone monument to irradiation from a laser characterized by a wavelength, a pulse length, a repetition rate, and a laser energy fluence determined and optimized for a given contaminant-porous stone system and the laser characteristics; and (d) adaptively evaluating the cleaning results by quantifying the thickness of the remaining contaminant.
Type:
Grant
Filed:
July 4, 2010
Date of Patent:
November 13, 2012
Assignee:
Universidade de Vigo
Inventors:
Betty Mireya Leon Fong, Aldara Pan Cabo, Stefano Chiussi, Esther Rebollar Gonzalez, Julia De La Asuncion Serra Rodriguez, Pio Manuel Gonzalez Fernandez
Abstract: Disclosed embodiments include a telemedicine communication system designed to make possible “virtual” patient visits by approved visitors such as the spouse, family, and friends of the hospitalized patient having the appropriate digital certificate and visitation/communication permissions. According to one embodiment, the system enables relatives to visit hospitalized patients using audiovisual communication modalities selected according to the severity and health status of the patient. Additionally, the system provides functionality to enable approved relatives to follow the health status of the patient according to their permissions.
Type:
Grant
Filed:
November 24, 2009
Date of Patent:
November 6, 2012
Assignee:
Innovatec, S.L.
Inventors:
M. Elena Fabregat, Francisco Ibanez Garcia, Pedro Mateo Riobo Aboy
Abstract: The present invention discloses a method and related apparatus for determining a cardiac parameter from either the arterial blood pressure signal or the photoplethysmographic signal to quantify the degree of amplitude modulation due to respiration (pulse pressure variation) and predict fluid responsiveness. The method involves the application of Lempel-Ziv complexity to a filtered and segmented physiologic signal for direct determination of the fluid status of a patient. Real-time monitoring of fluid status involves the implementation of the disclosed method as part of a bedside monitoring apparatus.
Type:
Grant
Filed:
February 1, 2009
Date of Patent:
October 30, 2012
Assignee:
Universidad De Valladolid
Inventors:
Pedro Mateo Riobo Aboy, Roberto Hornero Sánchez, Carlos Gómez Peña
Abstract: The disclosed embodiments include coolant compositions, packages of such compositions, and articles of manufacture derived from coolant compositions. According to one embodiment disclosed a liquid coolant composition is disclosed that comprises: (a) glycerol, (b) an aqueous solution of menthol, (c) calcium hydroxide, (d) barium hydroxide, and (e) water. According to another embodiment, a gel coolant composition is disclosed that comprises: (a) glycerol, (b) an aqueous solution of menthol, (c) calcium hydroxide, (d) barium hydroxide, (e) water, and (f) sodium polyacrylate. Such gel coolant composition can be converted to solid form by adding paraffin.
Abstract: An embodiment of an auscultation device can be constructed using electronic components to provide improved acquisition, processing, and communication of sound signals. An input device can be used for detecting sounds, and electrical signals representing the sounds can be processed and transmitted via Bluetooth and/or another form of wireless communication. Such embodiments can employ, at least in part, one or more of several commercially available wireless receiver devices, such as, without limitation, headsets and headphones, mobile phones, PDAs and/or other handheld devices, desktop, laptop, palmtop, and/or tablet computers and/or other computer devices and/or electronic devices.
Type:
Grant
Filed:
October 20, 2006
Date of Patent:
January 10, 2012
Inventors:
Merat Bagha, Arash Tirandaz, Richard D. Nevin, Kim Porter Henneman, Steven J. McCoy, David O. Roethig, I-Chiang Sun
Abstract: Disclosed embodiments of the invention include a method, system, and apparatus to monitor cardiovascular signals such as arterial blood pressure (ABP), pulse oximetry (POX), and intracranial pressure (ICP). The system can be used to calculate and monitor useful clinical information such as heart rate, respiratory rate, pulse pressure variation (PPV), harmonic phases, pulse morphology, and for artifact removal. The method uses a statistical state-space model of cardiovascular signals and a generalized Kalman filter (EKF) to simultaneously estimate and track the cardiovascular parameters of interest such as the cardiac fundamental frequency and higher harmonics, respiratory fundamental frequency and higher harmonics, cardiac component harmonic amplitudes and phases, respiratory component harmonic amplitudes and phases, and PPV.
Type:
Grant
Filed:
August 29, 2008
Date of Patent:
November 15, 2011
Assignees:
APDM, Inc., State of Oregon by and through the State Board of Higher Education on Behalf of Portland State University
Abstract: A apparatus and method for non-invasively measuring blood pressure. Cuff pressure and oscillometric signals are generated. The signals are conditioned by a plurality of linear filters to remove artifacts and local trends. Rank-order filters are applied to the conditioned oscillometric signal to detect upper and lower envelops. The systolic blood pressure and diastolic blood pressure are calculated using a plurality of multidimensional threshold vectors.