Patents Assigned to Nellcor Puritan Bennett
  • METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGICAL PARAMETERS USING TWO PHOTOACOUSTIC PEAKS
    Publication number: 20130109948
    Abstract: A patient monitoring system may use photoacoustic sensing to determine one or more physiological parameters of a subject. The system may detect an acoustic pressure, response generated by the application and absorption of light, which may include two peaks. The peaks may correspond to surfaces of a feature such as a blood vessel, and the peak information may allow determination of physiological information. For example, the two peaks may be analyzed and an effective attenuation coefficient may be determined, from which hemoglobin concentration, blood oxygen saturation, or other physiological parameters may be derived.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventor: Youzhi Li
  • METHODS AND SYSTEMS FOR PHOTOACOUSTIC SIGNAL PROCESSING
    Publication number: 20130109949
    Abstract: A physiological monitoring system may perform an optical measurement of a subject to assist a photoacoustic analysis of the subject. For example, an oblique-incidence diffuse reflectance measurement, photon density wave measurement, or other optical measurement may be used to determine one or more optical properties of a subject. Accordingly, the one or more optical properties may be used to determine an optical fluence at a region of the subject. In some arrangements, a physiological monitoring system may include an oximeter, and may use a calculated blood oxygen saturation value to assist a photoacoustic analysis. Photoacoustic analysis may include determining one or more physiological parameters based on a detected acoustic pressure response of a subject to a photonic signal via the photoacoustic effect.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Youzhi Li, Bo Chen
  • METHODS AND SYSTEMS FOR PHOTOACOUSTIC SIGNAL PROCESSING
    Publication number: 20130109941
    Abstract: A physiological monitoring system may perform an optical measurement of a subject to assist a photoacoustic analysis of the subject. For example, an oblique-incidence diffuse reflectance measurement, photon density wave measurement, or other optical measurement may be used to determine one or more optical properties of a subject. Accordingly, the one or more optical properties may be used to determine an optical fluence at a region of the subject. In some arrangements, a physiological monitoring system may include an oximeter, and may use a calculated blood oxygen saturation value to assist a photoacoustic analysis. Photoacoustic analysis may include determining one or more physiological parameters based on a detected acoustic pressure response of a subject to a photonic signal via the photoacoustic effect.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Youzhi Li, Bo Chen
  • METHODS AND SYSTEMS FOR GATING USER INITIATED INCREASES IN OXYGEN CONCENTRATION DURING VENTILATION
    Publication number: 20130104896
    Abstract: This disclosure describes systems and methods for ventilating a patient. The disclosure describes novel systems and methods for preventing and/or reducing the likelihood of a patient from receiving too much oxygen during a selected limited increase in oxygen concentration for a set period of time.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 2, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Gardner Kimm, Dan Graboi
  • Low perfusion signal processing systems and methods
    Patent number: 8433524
    Abstract: In some embodiments, systems and methods for identifying a low perfusion condition are provided by transforming a signal using a wavelet transform to generate a scalogram. A pulse band and adjacent marker regions in the scalogram are identified. Characteristics of the marker regions are used to detect the existence of a lower perfusion condition. If such a condition is detected, an event may be triggered, such as an alert or notification.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: April 30, 2013
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: James Nicholas Watson, Paul Stanley Addison, Edward M McKenna
  • MULTI-LUMEN TRACHEAL TUBE WITH PRESSURE DISTRIBUTION
    Publication number: 20130092171
    Abstract: The present disclosure describes systems and methods that utilize a tracheal tube with pressure distribution features. For certain patients, the vocal cords may form a seal with an inserted tracheal tube. A pressure distribution lumen may allow fluid communication between tracheal space above and below the vocal cords. This in turn may reduce the formation of a vacuum seal forming around a suction lumen evacuation port. Accordingly, the disclosed embodiments provide improved suctioning by distributing the pressure around the evacuation port and the space above the vocal cords.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Donn Sederstrom, Tyler Grubb, Alexa Jansey, Christopher Brune, Corinne Lengsfeld, Brian Rosenkrans
  • SENSOR SYSTEM WITH PRESSURE APPLICATION
    Publication number: 20130085356
    Abstract: Embodiments of the present disclosure relate to sensors for applying pressure to a patient's tissue. According to certain embodiments, the sensors may include one or more deformable elements that hold the optical components of the sensor against the tissue with an appropriate amount of pressure. In additional embodiments, such sensors may include a rigid one-piece sensor body that incorporates a deformable element to facilitate fine-fitting of the sensor against the tissue.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Friso Schlottau, Neville DeWitt Pierrat, Sarah Hayman, Donald R. Sandmore
  • TRACHEAL TUBE FLANGE MEMBER
    Publication number: 20130081634
    Abstract: Various embodiments of flange members and tracheostomy tube assemblies including such flange members are provided. An embodiment of a flange member includes a base portion adapted to receive a proximal end of a cannula, a first flange disposed on a first side of the base portion, and a second flange member disposed on a second side of the base portion opposite the first side. The first flange and the second flange are adapted to rest against a patient's neck to maintain the flange member outside of a patient's airway. The flange member also includes a biocompatible pad reversibly integrated with at least one of the base portion, the first flange, and the second flange.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Declan Kiernan, Kamlesh Sethiya, Mary Dempsey
  • TECHNIQUE FOR REMANUFACTURING A MEDICAL SENSOR
    Publication number: 20130079611
    Abstract: Present embodiments include a remanufactured bandage-type medical sensor having an optical assembly with an emitter adapted to transmit one or more wavelengths of light and a photodetector adapted to receive the one or more wavelengths of light transmitted by the emitter. The sensor also includes a laminate assembly having an electrically conductive adhesive transfer tape (ECATT) layer disposed over the photodetector, and the ECATT layer is adapted to shield the photodetector from electromagnetic interference (EMI). A nonconductive layer supports the emitter, the photodetector, and the ECATT layer within the sensor. At least a portion of the optical assembly is from a used bandage-type medical sensor, and at least a portion of the laminate assembly is new.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventor: David P. Besko
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH
    Publication number: 20130079647
    Abstract: A patient monitoring system may determine one or more reference points of a physiological signal. The system may select one or more fiducial points on the physiological signal relative to the reference points. The one or more fiducial points may be selected by selecting a point spaced by a time interval relative to one of the reference points. The time interval may be a predetermined constant, or the time interval may depend on physiological information. The system may generate a fiducial signal based on the selected fiducial points, calculate physiological information such as a respiration rate based on the selected fiducial points, or both.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: Scott McGonigle, James N. Watson
  • FARADAY SHIELD INTEGRATED INTO SENSOR BANDAGE
    Publication number: 20130077095
    Abstract: Present embodiments include a bandage sensor having an electrically conductive adhesive transfer tape layer as a Faraday shield. The electrically conductive transfer tape layer may be used in lieu of a fully metallic Faraday shield. The present embodiments also include a sensor cable having one or more conductive polymer EMI/RFI shields in place of a fully metallic EMI/RFI shield. Methods for manufacturing and remanufacturing such sensors and cables are also disclosed.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventor: David P. Besko
  • USE OF MULTIPLE BREATH TYPES
    Publication number: 20130074844
    Abstract: The present disclosure describes a mode of ventilation that makes an automatic determination of an appropriate mandatory breath type in response to one or more patient based criteria. Specifically, the ventilator during the delivery a mandatory breath type determines whether predetermined ventilatory criteria have been met. Based on the determination, the ventilator may deliver one of any number of mandatory breath types. Further, the present disclosure also combines the advantages of a hybrid mode of ventilation with this automatic determination of an appropriate mandatory breath type in response to one or more patient based criteria.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Gardner Kimm, Peter Doyle
  • TECHNIQUE FOR REMANUFACTURING A BIS SENSOR
    Publication number: 20130079618
    Abstract: Remanufactured BIS sensors and methods for remanufacturing used BIS sensors are provided. Such a remanufactured sensor may include certain components from a used medical sensor and certain new components. For example, a remanufactured BIS sensor may include a backing layer and at least first, second, and third electrodes disposed on the backing layer having a conductive ink. The first, second, and third electrodes are adapted to be in electrical contact with a patient to perform BIS measurements. A foam layer may be disposed on at least a portion of the backing layer, and an adhesive may be attached to the foam layer and is configured to secure the remanufactured BIS sensor to the patient. The first electrode, the second electrode, the third electrode, the backing layer, or a combination thereof, may be new and the foam layer, the adhesive, or a combination thereof, may be from a used medical sensor.
    Type: Application
    Filed: September 26, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Donald R. Sandmore, David P. Besko
  • SYSTEMS AND METHODS FOR ANALYZING A PHYSIOLOGICAL SENSOR SIGNAL
    Publication number: 20130079601
    Abstract: The present disclosure relates generally to patient monitoring systems and, more particularly, to signal analysis for patient monitoring systems. In one embodiment, a method of analyzing a detector signal of a physiological patient sensor includes obtaining the detector signal from the physiological patient sensor, wherein the detector signal crosses a horizontal boundary more than once. The method also includes determining the relative time and the slope of the detector signal at each boundary crossing. The method further includes estimating the amplitude of the detector signal based, at least in part, on the determined relative time and slope of the detector signal at each boundary crossing. The method also includes determining a physiological parameter of a patient based, at least in part, on the estimate of the amplitude of the detector signal.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: Paul S. Addison, James Watson
  • SHIELDED CABLE FOR MEDICAL SENSOR
    Publication number: 20130079609
    Abstract: Present embodiments include a cable configured to transmit signals between a pulse oximetry sensor and a patient monitor. The cable includes a first set of conductors adapted to connect to an emitter of the pulse oximetry sensor, a second set of conductors adapted to connect to a photodetector of the pulse oximetry sensor, and a conductive jacketing surrounding only the second set of conductors and adapted to shield the second set of conductors from electromagnetic interference (EMI). The conductive jacketing includes a conductive filler disposed within a polymeric matrix. The cable also includes a nonconductive jacketing surrounding the conductive jacketing, the nonconductive jacketing being configured to electrically insulate the conductive jacketing.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett LLC
    Inventor: David P. Besko
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH
    Publication number: 20130079606
    Abstract: A patient monitoring system may receive a photoplethysmograph (PPG) signal including samples of a pulse waveform. The PPG signal may demonstrate morphology changes based on respiration. The system may calculate morphology metrics from the PPG signal, the first derivative of the PPG signal, the second derivative of the PPG signal, or any combination thereof. The morphology metrics may demonstrate amplitude modulation, baseline modulation, and frequency modulation of the PPG signal that is related to respiration. Morphology metric signals generated from the morphology metrics may be used to determine respiration information such as respiration rate.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: Scott McGonigle, Paul S. Addison, James Ochs, James Watson
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH
    Publication number: 20130080489
    Abstract: A patient monitoring system may receive a photoplethysmograph (PPG) signal including samples of a pulse waveform. A plurality of morphology metric signals may be generated from the PPG signal. The system may generate an autocorrelation sequence for each of the morphology metric signals. An autocorrelation metric may be generated from each of the autocorrelation sequences and may represent the regularity or periodicity of the morphology metric signal. The autocorrelation sequences may be combined to generate a combined autocorrelation sequence, with the weighting of the autocorrelation sequences based on the autocorrelation metric. The combined autocorrelation sequence may be used to determine physiological information.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: James Ochs, Paul S. Addison, James Watson
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH
    Publication number: 20130079656
    Abstract: A signal representing physiological information may include information related to respiration. A patient monitoring system may generate a plurality of autocorrelation sequences from the signal and combine the autocorrelation sequences to generate a combined autocorrelation sequence. The combined autocorrelation sequence may be analyzed to identify one or more peaks that may correspond to respiration information. Respiration information such as respiration rate may be determined based on the one or more peaks.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: Jimmy Dripps, James Ochs, Paul S. Addison, James Watson
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM A PHOTOPLETHYSMOGRAPH
    Publication number: 20130079657
    Abstract: A signal representing physiological information may include information related to respiration. A patient monitoring system may utilize a wavelet transform to generate a scalogram from the signal. A threshold for the scalogram may be calculated, and scalogram values may be compared to the threshold. One of the scales meeting the threshold may be selected as representing respiration information such as respiration rate. The respiration information may be determined based on the selected scale.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: James Ochs, James Watson, Binwel Weng, Paul S. Addison, Scott McGonigle
  • Systems and methods for gating an imaging device
    Patent number: 8400149
    Abstract: A method and system for automatically gating an imaging device is disclosed. Physiological process information of a patient may be derived from a plethysmographic signal, for example, by analyzing the plethysmographic signal transformed by a continuous wavelet transform. Other techniques for deriving physiological process information of a patient include, for example, analyzing a scalogram derived from the continuous wavelet transform. The physiological process information may be used to automatically gate imaging data acquired from an imaging device in order to synchronize the imaging data with the physiological process information.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: March 19, 2013
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: Robert Stoughton, Paul S. Addison, James N. Watson