Patents Examined by Robert L. Nasser
  • Patent number: 7736311
    Abstract: An automatic skin perfusion measuring system including instrumentation that automatically analyzes perfusion measurements to identify motion artifact and SPP values and a sensor placement device is provided. The instrumentation is configured to ignore motion artifact. Perfusion measurements are designated as SPP values if various criteria are met. SPP value criteria pertain to factors including cuff pressure, perfusion, perfusion change percentages relative to previous and subsequent perfusion measurements, and whether perfusion measurements are increasing or decreasing relative to previous and subsequent perfusion measurements. The sensor placement device assures reliable data is produced when multiple measurements are desired.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 15, 2010
    Assignee: Vasamed, Inc.
    Inventors: Daniel J. Bartnik, Brandon W. Reynolds, Irvin T. Pierskalla
  • Patent number: 7736320
    Abstract: The present invention is a system for monitoring a patient's breath chemistry comprising a plurality of components, including a self-condensing pH sensor distally mounted on a catheter, a transmitter with hydration sensing circuitry for the pH sensor, and, a processing receiver/data recorder. The specifically designed self-condensing pH sensor located on the distal end of the catheter is designed to be inserted into the patient's airway. Monitoring of a patient's breath pH is accomplished by using the miniaturized self-condensing pH sensor, providing for real-time monitoring of patient airway pH values.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: June 15, 2010
    Assignee: Sierra Medical Technology, Inc.
    Inventors: Ross Tsukashima, Erich H. Wolf, Jeffery D. Schipper, Charles S. Bankert, Leo R. Roucher, Thomas Germain Wallner
  • Patent number: 7734323
    Abstract: An apparatus comprising a user interface configured to generate an electrical signal to begin determination of an effective correction factor when prompted by a user, an input configured to receive sampled blood glucose data of a patient that is obtained during a specified time duration, including a time duration after delivery of an initial insulin correction bolus, and a controller in electrical communication with the input and the user interface. The controller includes a correction factor module configured for determining an effective correction factor according to an amount of insulin in the initial insulin correction bolus and a decrease in the blood glucose level determined using the sampled blood glucose data. Other devices and methods are disclosed.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 8, 2010
    Assignee: Smiths Medical ASD, Inc.
    Inventors: Michael Blomquist, Rhall E. Pope
  • Patent number: 7734337
    Abstract: For measuring a brain local activity, a predetermined frequency bandwidth wider than a frequency bandwidth of alpha waves of scalp potentials is divided into a predetermined number of frequency banks each having a fixed frequency width, data of each divided frequency bank is divided into segments of a predetermined duration on a time axis, a Z-score of the subject is determined from a first mean value of normalized power variances determined for the segments and a second mean value of normalized power variances predetermined in the same manner as the first mean value for a predetermined normal person group and a standard deviation of the normalized power variances in the group, and a mean value of the Z-scores determined over all of the frequency banks is mapped on a brain surface for each sensor, whereby a template of a specified brain disorder and likelihood of a subject to a specified brain disorder are calculated.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: June 8, 2010
    Assignee: Brain Functions Laboratory, Inc.
    Inventors: Toshimitsu Musha, Haruyasu Matsuzaki
  • Patent number: 7731663
    Abstract: Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient's respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient's heart failure status. An output signal indicative of the patient's heart failure status may be generated based on the trend parameter.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: June 8, 2010
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Viktoria A. Averina, Yi Zhang, Yousufali H. Dalal
  • Patent number: 7731666
    Abstract: An apparatus for measuring lung ventilation, comprising: a pressure device to measure volume of air flow; an aerosol-generating device that provides aerosol particles to be released at a determined point in a breathing cycle; a mouthpiece with a detector that measures the concentration of aerosol particles for a given volume during the breathing cycle; and a computing device configured to provide lung ventilation data as a function of time constants.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 8, 2010
    Assignee: Respiratory Management Technology
    Inventors: Michael McCawley, Gary Ganser, Ian Christie, Tal Gottesman, James Dalton
  • Patent number: 7727160
    Abstract: A method and apparatus that provides an expert system for determining respiratory phase during ventilatory support of a subject. Discrete phase states are partitioned and prior probability functions and observed probability functions for each state are defined. The probability functions are based upon relative duration of each state as well as the flow characteristics of each state. These functions are combined to determine phase probabilities for each state using Bayes' theorem. The calculated probabilities for the states may then be compared to determine which state the subject is experiencing. A ventilator may then conform respiratory support in accordance with the most probable phase. To provide a learning feature, the probability functions may be adjusted during use to provide a more subject specific response that accounts for changing respiratory characteristics.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: June 1, 2010
    Assignee: ResMed Limited
    Inventors: Paul Anthony Green, David John Bassin
  • Patent number: 7729755
    Abstract: Methods for determining whether the brain activity of a human subject in response to a stimulus of interest or question of interest is characteristic of a state of interest, such as a deceptive state or a truthful state, are disclosed. Some methods include the use of control questions, including truthful control questions and deceptive control questions, to provide bases for comparison for responses to stimuli of interest or questions of interest. Some methods include the use of differences between two states, such as a deceptive state and a truthful state. In some methods, brain maps are generated and compared. Also disclosed are systems for detecting deception by measuring brain activity.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: June 1, 2010
    Assignee: Cephos Corp.
    Inventor: Steven J. Laken
  • Patent number: 7727158
    Abstract: There is provided a pulse wave data analyzing method for extracting vital information out of pulse wave data concerning a living body.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: June 1, 2010
    Assignee: Konica Minolta Sensing, Inc.
    Inventors: Kazumi Kitajima, Yoshiroh Nagai, Masatake Fukunami, Yasumasa Tsukamoto
  • Patent number: 7729737
    Abstract: Embodiments of the present invention provide for raising a background current setting for a biosensor above the actual (measured) background current present (i.e., overestimating the background current), particularly in the hypoglycemic range, to improve sensor accuracy and decrease the chance of glucose value overestimation by the sensor.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: June 1, 2010
    Assignee: ISense Corporation
    Inventor: W. Kenneth Ward
  • Patent number: 7722544
    Abstract: A method for performing an in-vivo calibration of a blood pressure sensor that is associated with an in-vivo balloon system. The method involves monitoring a patient's blood pressure by observing the system gas pressure while at the same time monitoring the patient's blood pressure through the sensor. The blood pressure measurements obtained by monitoring the system gas pressure are used as reference, or “true,” blood pressure measurements, and an “offset” is determined between the reference blood pressure measurements and the blood pressure measurements obtained through the sensor. The offset can be stored in a memory, which may also store sensor sensitivity data. The offset and/or sensitivity data may be used to adjust future measurements obtained from the sensor, thereby generating calibrated sensor measurements.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: May 25, 2010
    Assignee: Datascope Investment Corp.
    Inventors: Jonathan Williams, Shrenik Daftary, Boris Leschinsky
  • Patent number: 7722537
    Abstract: An apparatus for analyzing the composition of bodily fluid. The apparatus comprises a fluid handling network including a patient end configured to maintain fluid communication with a bodily fluid in a patient and at least one pump intermittently operable to draw a sample of bodily fluid from the patient. The apparatus further comprises a fluid analyzer positioned to analyze at least a portion of the sample and measure the presence of two or more analytes. Also disclosed is a method for analyzing the composition of a bodily fluid in a patient. The method comprises drawing a sample of the bodily fluid of the patient through a fluid handling network configured to maintain fluid communication with a bodily fluid in a patient. The method further comprises analyzing the at least a portion of the sample in a fluid analyzer to estimate the concentration of two or more analytes in the sample.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: May 25, 2010
    Assignee: OptiScan Biomedical Corp.
    Inventors: Bernhard B. Sterling, James R. Braig, Peter Rule, W. Dale Hall, Mark Wechsler, Jennifer H. Gable
  • Patent number: 7720530
    Abstract: A method and apparatus for providing an on-site diagnosis of a subject to determine the presence and/or severity of a concussion is provided. The method includes placing an electrode set coupled to a handheld base unit on the subject's head, acquiring brain electrical signals from the subject through the electrode set, processing the acquired brain electrical signals using a signal processing algorithm stored in a memory of the base unit, determining the presence and/or severity of a concussion from the processed signals, indicating the presence and/or severity of a concussion on the handheld base unit, and determining a course of treatment for the subject based on the indication.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: May 18, 2010
    Assignee: Brainscope Company, Inc.
    Inventor: Elvir Causevic
  • Patent number: 7720531
    Abstract: A system and method determines from EEG signals the lack of awareness and the depth of anesthesia of a patient to whom an anesthetic agent is being administered. In particular, a log-log representation of the EEG power spectrum is converted to two intersecting lines so that the intersection point and the relative slopes can be analyzed to determine a state of awareness of a patient. This system and method may also be used in an analysis of the brain function of a sleeping individual to distinguish between different levels of non-REM sleep, REM sleep, and awakeness.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: May 18, 2010
    Inventor: Christopher Scheib
  • Patent number: 7715893
    Abstract: Disclosed herein are systems and methods for calibrating a continuous analyte sensor, such as a continuous glucose sensor. One such system utilizes one or more electrodes to measure an additional analyte. Such measurements may provide a baseline or sensitivity measurement for use in calibrating the sensor. Furthermore, baseline and/or sensitivity measurements may be used to trigger events such as digital filtering of data or suspending display of data.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 11, 2010
    Assignee: DexCom, Inc.
    Inventors: Apurv Ullas Kamath, Peter C. Simpson, James H. Brauker, Paul V. Goode, Jr.
  • Patent number: 7715894
    Abstract: An electrode cap for obtaining EPM signals from a head of a subject, the cap comprising: (i) an insulating layer (33) for positioning adjacent to the head of the subject; (ii) an electrically conductive layer (29) comprising ionic conduction means, situated above the insulating layer so that in use, it is separated from the head of the subject by the insulating layer; (iii) a plurality of measurement signal electrodes (13) extending through the electrically conductive layer and the insulating layer for contacting the head of the subject, the measurement signal electrodes being electrically insulated from the electrically conductive layer; and (iv) at least one reference node (53, 55) electrically connected to the electrically conductive layer.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: May 11, 2010
    Assignee: Conopco, Inc.
    Inventors: William James Ross Dunseath, Tor Andrew Alden
  • Patent number: 7708694
    Abstract: A cuff for measuring volume and change in volume of a body appendage includes a hollow, rigid tube having an inner surface; and a bladder having an inner surface and an outer surface, the ends of the bladder being sealed to the ends of the tube to create an enclosed internal volume between the inner surface of the bladder and the inner surface of the tube and an external volume defined by the outer surface of the bladder and surrounded by the internal volume, the bladder having a normal, relaxed state, in which the internal volume is filled with a fluid and a retracted state in which the fluid is evacuated from the internal volume. Two stiffener ribs placed on the inner surface of the bladder, parallel to each other and to the lengthwise axis of the tube at diametrically opposite positions. A plurality of emitters and detectors arranged in a linear array are embedded in one of the ribs, so as to emit and detect light through the bladder.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: May 4, 2010
    Assignee: Hema Metrics, Inc.
    Inventors: Perry N. Law, Douglas L. Cox, David R. Miller, David A. Bell
  • Patent number: 7708690
    Abstract: A patient care unit (1) with a bed for accommodating a patient makes possible undisturbed accessibility to the patient by avoiding cable connections between sensors at the patient and the measuring instruments or treating devices (2) belonging to them. The patient care unit (1) has a receiving unit for receiving sensor signals of the patient, transmission features for passing on the sensor signals to a transmitting unit in the patient care unit (1) or to a cable connection (4) for connecting the patient care unit (1) to the power supply, so that the sensor signals enter measuring instruments or treating devices (2) that belong to them for the evaluation of the sensor signals in a wireless manner or via the power supply.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: May 4, 2010
    Assignee: Dräger Medical AG & Co. KG
    Inventors: Udo Beckmann, Henning Gerder
  • Patent number: 7711402
    Abstract: Devices and methods for determining analyte levels are described. The devices and methods allow for the implantation of analyte-monitoring devices, such as glucose monitoring devices, that result in the delivery of a dependable flow of blood to deliver sample to the implanted device. The devices comprise a unique microarchitectural arrangement in the sensor region that allows accurate data to be obtained over long periods of time.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: May 4, 2010
    Assignee: DexCom, Inc.
    Inventors: Mark C. Shults, Stuart J. Updike, Rathbun K. Rhodes
  • Patent number: RE41332
    Abstract: A gas analysis apparatus, and a method for calibrating it and for compensating measurement errors, are disclosed. This method and apparatus are particularly suited for use during a cardiopulmonary exercise test by a test subject. The oxygen and carbon dioxide concentrations of the subject's breath are measured, and errors are compensated based on the results of previous calibration. These compensated measurements, as well as other physiological data monitored during the cardiopulmonary exercise test quantities calculated from these measurements, are presented as a series of graphs in a logical order to enhance their diagnostic and prognostic value. A facemask and headstraps are adapted for use with the gas analysis apparatus. The facemask possesses a plurality of pins fitting into corresponding holes in the headstraps, and the headstraps possess quick-release attachment means to provide for quickly securing the face mask to or removing it from a subject.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: May 11, 2010
    Assignee: Mergenet Medical, Inc.
    Inventor: Andrew S. Binder