Patents Assigned to Nellcor Puritan Bennett LLC
  • Publication number: 20140190479
    Abstract: A speaking valve includes a hollow body configured to be secured to a connector of a tracheostomy system disposed in a patient. The speaking valve further includes a cap that houses a valve member, which enables the speaking valve to act as a one-way check valve. The valve member, hollow body, or other components of the valve may include a material that undergoes a chemical changed when exposed to moisture, i.e., a hydrosensitive material. Particularly, the hydrosensitive material may exhibit a color change when exposed to moisture. As such, the hydrosensitive material may be useful in providing a visual indication of the saturation and/or moisture level of the speaking valve.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 10, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Kamlesh Sethiya, Emmet Bolger
  • Publication number: 20140085080
    Abstract: A method for automating physiologic alerts and derived parameters with trending heuristics includes receiving at a mobile patient monitor interface, a first input expression indicative of a first parameter source for first patient parameters from a first medical device from a user. The method further includes receiving, at the mobile patient monitor interface, a second input expression indicative of a second parameter source for second patient parameters from a second medical device from a user. The method further includes applying, at the mobile patient monitor interface, a smoothing operator to the first input expression and the second input expression. The method further includes evaluating, at the mobile patient monitor interface, a complex expression of the first patient parameters and the second patient parameters based on the smoothing operator to initiate display of at least one parameter, derived parameter, trend, or alert on a remote device.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 27, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventor: Tony C. Carnes
  • Publication number: 20140085079
    Abstract: A method for automating physiologic alerts with manual values includes receiving at a mobile patient monitor interface, a first input expression indicative of a first parameter source for first patient parameters from a first medical device or input from a user. The method further includes receiving, at the mobile patient monitor interface, a second input expression indicative of a second parameter source for second patient parameters from a second medical device or input from a user. The method further includes evaluating, at the mobile patient monitor interface, a manual input value in the first input expression or the second input expression. The method further includes evaluating, at the mobile patient monitor interface, a complex expression of the first patient parameters and the second patient parameters based on the manual input value to initiate display of at least one alert or derived parameter on a remote device.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 27, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventor: Tony C. Carnes
  • Publication number: 20140085078
    Abstract: A method for automating physiologic alerts with precedence order includes receiving at a mobile patient monitor interface, a first input expression indicative of a first parameter source for first patient parameters from a first medical device from a user. The method further includes receiving, at the mobile patient monitor interface, a second input expression indicative of a second parameter source for second patient parameters from a second medical device from a user. The method further includes modifying, at the mobile patient monitor interface, a precedence order of the first parameter source and the second parameter source. The method further includes evaluating, at the mobile patient monitor interface, a complex expression of the first patient parameters and the second patient parameters based on the precedence order to initiate display of at least one parameter, derived parameter, trend, or alert on a remote device.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 27, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventor: Tony C. Carnes
  • Publication number: 20140085076
    Abstract: A method for controlling alert notifications includes receiving, at an alert notification monitor, notifications from at least one medical device. The method further includes analyzing, at the alert notification monitor, the notifications based on one or more complex triggers to identify at least one triggered notification. The method further includes transmitting the at least one triggered notification.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 27, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventor: Tony C. Carnes
  • Publication number: 20140081098
    Abstract: A sensor system is provided for determining a pulse transit time measurement of a patient. The sensor system includes a carotid sensor device configured to be positioned on a neck of the patient over a carotid artery of the patient. The carotid sensor device is configured to detect a plethysmograph waveform from the carotid artery. The sensor system includes a temporal sensor device that is operatively connected to the carotid sensor device. The temporal sensor device is configured to be positioned on the patient over a temporal artery of the patient. The temporal sensor device is configured to detect a plethysmograph waveform from the temporal artery.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: Nellcor Puritan Bennett LLC
    Inventors: Kristi Cohrs, James Nicholas Watson, Paul Stanley Addison, Mark Su
  • Publication number: 20140081152
    Abstract: A PPG system for determining cardiac stability of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient, wherein the PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system includes a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a cardiac stability analysis module configured to determine an amplitude variance of the PPG signal over a predetermined time period and configured to determine a pulse period variance of the PPG signal over the time period. The cardiac stability analysis module is configured to determine cardiac stability as a function of the amplitude variance and the pulse period variance.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: Nellcor Puritan Bennett LLC
    Inventor: Matt Clinton
  • Publication number: 20140073959
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may filter the physiological signal based on an adjustable filter to generate a filtered physiological signal. The system may perform calculations over time based on the filtered physiological signal to determine values indicative of a physiological parameter. The adjustable filter may be adjusted based on the values indicative of the physiological parameter. Some of the calculations are qualified and some of the calculations are disqualified. The system may determine a metric based on the physiological signal that is used to determine whether to output a value based on one or more previously calculated values when a current calculation is disqualified. The system may output a value based on one or more previously calculated values when a current calculation is disqualified and when a criterion based on the metric is satisfied.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder
  • Publication number: 20140073862
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may apply a digital filter to the physiological signal to assist in the determination of the physiological information. The system may determine a metric based on the physiological signal, and selectively apply the digital filter to the physiological signal based on the metric. The digital filter, which may include two or more filter coefficients, may correspond to a weighted sum of the physiological signal and a difference signal corresponding to the physiological signal. The filter coefficients may be adjustable, allowing selectivity in the characteristics of the digital filter between weighting the physiological signal and difference signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder
  • Publication number: 20140073867
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may receive a calculated value indicative of a period associated with a physiological rate. The system may determine a first value indicative of a baseline of the physiological signal and a second value indicative of a deviation of the physiological signal from the baseline. The first value may, for example, be a median value, an average, or a coefficient corresponding to a best fit curve of the physiological signal. The second value may be a standard deviation value, a standard error, or a root mean square value based on the physiological signal. The system may qualify or disqualify the calculated value based on the first and second values.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder
  • Publication number: 20140073953
    Abstract: A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Pirow Engelbrecht, Fernando Rodriguez-Llorente, Nicholas James Wooder
  • Publication number: 20140073873
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may determine a skew metric based on the physiological signal. The system may determine an algorithm setting based on a reference relationship between the determined skew metric and a value indicative of a physiological rate. The algorithm setting may, for example, affect the amount of filtering applied to the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder
  • Publication number: 20140073864
    Abstract: A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Pirow Engelbrecht, Fernando James Rodriguez-Llorente, Nicholas James Wooder
  • Publication number: 20140073956
    Abstract: A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Pirow Engelbrecht, Fernando Rodriguez-Llorente, Nicholas James Wooder
  • Publication number: 20140073968
    Abstract: A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Pirow Engelbrecht, Fernando Rodriguez-Llorente, Nicholas James Wooder
  • Publication number: 20140073933
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from physiological data. The system may condition the physiological data to assist in the determination of the physiological information. The system may calculate differences based on the physiological data and identify differences that exceed a threshold. The calculated differences may, for example, be a derivative signal. The system may modify the physiological data based on the identified differences. The modification may include reducing, or otherwise limiting, some differences between adjacent values in the physiological data.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder
  • Publication number: 20140073939
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may generate a lag matrix, which includes multiple segments of the physiological signal each having the same number of values. The system may generate a correlation matrix, which includes multiple correlation values, based on the lag matrix. The system may identify a peak in the correlation lag matrix, or a processed matrix derived thereof, and the corresponding lag value. The correlation matrix, or processed matrix thereof, may be rotated, averaged, or otherwise transformed by the system to identify the lag value. The system may determine physiological rate information based on the identified lag value.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder
  • Publication number: 20140073965
    Abstract: A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Pirow Engelbrecht, Fernando Rodriguez-Llorente
  • Publication number: 20140073951
    Abstract: A physiological monitoring system may process a physiological signal such a photoplethysmograph signal from a subject. The system may determine physiological information, such as a physiological rate, from the physiological signal. The system may use search techniques and qualification techniques to determine one or more initialization parameters. The initialization parameters may be used to calculate and qualify a physiological rate. The system may use signal conditioning to reduce noise in the physiological signal and to improve the determination of physiological information. The system may use qualification techniques to confirm determined physiological parameters. The system may also use autocorrelation techniques, cross-correlation techniques, fast start techniques, and/or reference waveforms when processing the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Pirow Engelbrecht, Fernando Rodriguez-Llorente, Nicholas James Wooder
  • Publication number: 20140073934
    Abstract: A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may condition the physiological signal to assist in the determination of the physiological information. The system may generate a difference signal based on the physiological signal and sort the difference signal. The system may identify values in the sorted difference signal that exceed a threshold, and modify the physiological signal based on the identified values. The modification may include reducing, or otherwise limiting, some differences between adjacent values in the physiological signal.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 13, 2014
    Applicant: NELLCOR PURITAN BENNETT LLC
    Inventors: Fernando Rodriguez-Llorente, Pirow Engelbrecht, Nicholas James Wooder