Natus Medical Patent Grants

Simultaneous impedance testing method and apparatus

Granted: March 14, 2017
Patent Number: 9594104
A method and apparatus for determining the impedance of the plurality of channels comprising a plurality of channels having a plurality of first channels and a plurality of second channels, at least one reference channel, a signal generator electrically connected to the plurality of channels, a reference signal generator connected to the reference channel, at least one amplifier connected to each of the plurality of channels and the reference channel and at least one filter connected to…

Method and system for sleep stage determination

Granted: November 17, 2015
Patent Number: 9186083
A method and system for sleep stage determination is disclosed comprising: acquiring EEG data from two or more EEG electrodes of an electrode arrangement, wherein the EEG data is divided into one or more epochs; detecting graphoelements from the EEG data for each epoch using a graphoelement detector; calculating a differential entropy from the EEG data for each epoch in an entropy module; and assigning a sleep stage to each epoch based on the calculated differential entropy and the…

EEG seizure analysis

Granted: November 3, 2015
Patent Number: 9173610
Automated seizure detection from within an electroencephalogram (EEG) by instrumental means employs novel algorithms within software, using specific measurements of individual waves in trains, rather than any “bulk” process. The acquired signal is filtered, the wave shapes are individually described within a number of parallel runs using a variety of parameters, then criteria (including regularity criteria) are calculated and applied in order to create raw detection results. Finally…

System for sleep stage determination using frontal electrodes

Granted: August 4, 2015
Patent Number: 9095268
The described embodiments relate generally to methods, systems and devices for sleep stage determination using frontal electrodes. Certain embodiments relate to a system for sleep stage determination comprising a sensing unit and a processing unit. The sensing unit is positioned over a forehead area of a patient and has first, second and third electrodes for positioning at locations on or adjacent the forehead area for detecting electrical potentials of a human head. The processing unit…

Wireless physiological monitoring

Granted: August 12, 2014
Patent Number: 8805527
Embodiments of the invention relate to a wireless physiological monitoring system. The system includes at least one wireless sensor and a monitoring device which are linked to one another of a wireless fashion for measuring physiological signals of a patient. The at least one wireless sensor is located on the patient and may comprise a wireless surface electrode assembly or a wireless needle assembly. The system may also comprise a wireless stimulator synchronized with the wireless…

Method for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids

Granted: October 2, 2012
Patent Number: 8277390
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I/O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical…

Method, system and device for sleep stage determination using frontal electrodes

Granted: August 14, 2012
Patent Number: 8244340
The described embodiments relate generally to methods, systems and devices for sleep stage determination using frontal electrodes. Certain embodiments relate to a system for sleep stage determination comprising a sensing unit and a processing unit. The sensing unit is positioned over a forehead area of a patient and has first, second and third electrodes for positioning at locations on or adjacent the forehead area for detecting electrical potentials of a human head. The processing unit…

Phototherapy method

Granted: December 6, 2011
Patent Number: 8069857
A method of providing phototherapy to a patient. In some embodiments, the method includes the steps of placing a patient on a rigid support surface of a phototherapy device, the support surface being adapted to support the patient without substantial deformation; transmitting light from a light source through a first portion of the support surface to the patient; and limiting light transmission from the light source through a second portion of the support surface.

Phototherapy device

Granted: November 1, 2011
Patent Number: 8048136
A phototherapy system having a rigid support surface adapted to support a patient without substantial deformation; a light source disposed so as to transmit light through the support surface; and a mask adapted to permit light transmission from the light source through a first portion of the support surface and to limit light transmission from the light source through a second portion of the support surface.

Method and apparatus for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids

Granted: April 12, 2011
Patent Number: 7922671
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I/O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical…

Diagnosing and training the gaze stabilization system

Granted: March 10, 2009
Patent Number: 7500752
A method for diagnosing impairments of a subject's gaze stabilization system is provided. The method includes measuring the subject's static visual acuity to obtain an assessment, setting at least one test parameter based on the assessment, measuring the subject's dynamic visual acuity using the test parameters to obtain a first dynamic measurement and a second dynamic measurement, and determining an impairment of the subject's gaze stabilization system using the assessment and the first…

Phototherapy system and device

Granted: October 21, 2008
Patent Number: 7438719
A phototherapy system and device is disclosed, including an array of light sources from at least two distinct spectral light regions. The first spectral light region represents the treatment color, and thus is chosen for its phototherapeutic value. For instance, blue light may be the treatment color for hyperbilirubinemia. The second spectral light region represents the balancing color, and is chosen for its ability to mitigate discomfort that may be caused by viewing the treatment…

Method and apparatus for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids

Granted: May 29, 2007
Patent Number: 7223245
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I/O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical…

Phototherapy system and device

Granted: November 7, 2006
Patent Number: 7131990
A phototherapy system and device is disclosed, including an array of light sources arranged so as to achieve substantially uniform distribution of light on a subject. The light sources can be arranged in a number of configurations, including but not limited to distributions in which the density of lights sources is greater in the periphery than in the center. The present invention also includes a light diffusing panel to increase exposure uniformity, and a targeting mechanism to ensure…

Hearing evaluation device with noise detection and evaluation capability

Granted: November 7, 2006
Patent Number: 7133715
An apparatus and method for evaluation of hearing loss is disclosed. The apparatus and method use evoked Auditory Brainstem Responses (ABR) to determine if the subject is able to hear click stimuli that are repeatedly administered. In order to facilitate efficient differentiation of the ABR from the accompanying noise, normative data is used to detect test conditions where physiological, non-physiological, and ambient acoustic noise would interfere with the progression of test.

Ear coupler

Granted: December 21, 2004
Patent Number: 6832663
A one-piece, transparent flexible ear coupler for use with hearing evaluation is disclosed. It includes an annular side wall and a bottom wall forming an acoustic chamber. A flexible adhesive-backed flange is disposed on the periphery of the ear coupler. The flange attaches to the subject's head, firmly holding the ear coupler in place over the ear. The annular side wall has a port for the placement of a transducer assembly, and also has ribs to help lock the transducer assembly in…

Hearing evaluation device with noise-weighting capabilities

Granted: September 16, 2003
Patent Number: 6620100
An apparatus and method for evaluation of hearing loss is disclosed. The apparatus and method use evoked Auditory Brainstem Responses (ABR) to determine if the subject is able to hear repeatedly administered click stimuli. In order to optimize evaluation, the present invention uses normative data to accurately weight the auditory responses, so that evaluation will be possible in different or changing noise conditions.

End tidal breath analyzer

Granted: April 8, 2003
Patent Number: 6544190
A noninvasive apparatus and method for measuring a subject's end tidal carbon monoxide concentration is disclosed, featuring the ability to (i) determine carbon monoxide concentration on a breath-by-breath basis, (ii) determine mean carbon monoxide concentration by averaging local carbon monoxide values, (iii) avoid the premature determination that an end tidal phase is over, and (iv) determine when breath variability or system variability will likely preclude accurate testing. The…

Ear coupler

Granted: February 4, 2003
Patent Number: D469873

Multi-mode audiometric device and associated screening method

Granted: January 7, 2003
Patent Number: 6503207
The disclosure describes a multi-mode audiometric device comprising a stimulus generator adapted to transmit at least one true random stimulus sequence to a subject's inner ear, a first detector for detecting at least one AEP signal having at least a first waveform, a second detector for detecting at least one OAE signal having at least a second waveform; a signal analyzer for analyzing the AEP and OAE signals, the signal analyzer including a first averager for reconstructing the…