US5601091A
Expired / Lapsed
US
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Audiometric apparatus and association screening method
Assignee: Natus Medical Inc
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Filing: 1995-08-01
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Granted: 1997-02-11
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Expires: 2015-08-01
Abstract
Abstract An audiometric screening apparatus and associated method provides fast, low-cost, noninvasive screening of a subject's heating. The apparatus includes a signal processor for generating a stimulus signal and a probe electrically coupled to the signal processor and insertible in a subject's ear. The probe includes a transmitter to transmit the stimulus signal into the ear and a receiver for receiving a first response signal from the subject's ear. An electrode, electrically coupled to the signal processor, is attached to the subject's scalp for sensing a second response signal. The signal processor processes the first response signal to provide an evoked otoacoustic emission signal and processes the second response signal to provide an auditory evoked potential signal.
Inventors
- 👤 William F. Dolphin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:51
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/12; A61B5/121; A61B5/24; A61B5/316; A61B5/369; A61B5/377; A61B5/38; A61B5/72; A61B5/7235; A61B5/7253; A61B5/7257
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
110 words
An audiometric apparatus comprising: a signal processor for generating a first stimulus signal; a probe electrically coupled to the signal processor and insertible in a subject's ear, the probe including (i) a transmitter for transmitting the first stimulus signal into the subject's ear and (ii) a receiver for receiving a first response signal from the subject's ear; an electrode, electrically coupled to the signal processor and attachable to the subject's scalp, for sensing a second response signal from the subject's scalp; and the signal processor processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory evoked potential signal.
Claim 2
Dependent Claim
110 words
An audiometric apparatus comprising: a signal processor for generating a first stimulus signal; a probe electrically coupled to the signal processor and insertible in a subject's ear, the probe including (i) a transmitter for transmitting the first stimulus signal into the subject's ear and (ii) a receiver for receiving a first response signal from the subject's ear; an electrode, electrically coupled to the signal processor and attachable to the subject's scalp, for sensing a second response signal from the subject's scalp; and the signal processor processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory evoked potential signal.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein the first stimulus signal comprises an amplitude modulated signal.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1 wherein the first stimulus signal comprises at least one paired tonal stimuli.
Claim 5
Dependent Claim
18 words
The apparatus of claim 1 wherein the signal processor processes the first and second response signals in parallel.
Claim 6
Dependent Claim
17 words
The apparatus of claim 4 wherein the signal processor processes the first and second response signals simultaneously.
Claim 7
Dependent Claim
51 words
The apparatus of claim 1 wherein the signal processor generates a second stimulus signal, the transmitter transmits the second stimulus signal into the subject's ear, the receiver receives a third response signal from the subject's ear, and the signal processor processes the third response signal to provide an acoustic reflectivity signal.
Claim 8
Dependent Claim
33 words
The apparatus of claim 1 further comprising a plurality of electrodes, electrically coupled to the signal processor and connectable to the subject's scalp, for sensing a second response signal from the subject's scalp.
Claim 9
Dependent Claim
109 words
The apparatus of claim 1 further comprising: a digital signal processing element; a memory electrically coupled to the digital signal processing element; a digital-to-analog converter electrically coupled to the digital signal processing element for converting the first stimulus signal from a digital format into an analog format; an attenuator electrically coupled to the digital-to-analog converter for regulating the first stimulus signal; a filter electrically coupled to the receiver and the electrode for filtering the first and second response signals; an analog-to-digital converter electrically coupled to the filter for converting the first and second response signals from an analog format into a digital format for the digital signal processing element.
Claim 10
Dependent Claim
42 words
The apparatus of claim 8 further comprising: a first amplifier electrically coupled to the probe for providing amplified first response signals to the filter; and a second amplifier electrically coupled to the electrode for providing amplified second response signals to the filter.
Claim 11
Dependent Claim
76 words
The apparatus of claim 1 further comprising: a control processor for requesting an evoked otoacoustic emission signal and an auditory evoked potential signal; a display electrically coupled to the control processor for displaying one or more characteristics of the evoked otoacoustic emission signal and the auditory evoked potential signal; and an input device electrically coupled to the control processor to enable a user to request the evoked otoacoustic emission signal and the auditory evoked potential signal.
Claim 12
Dependent Claim
86 words
An auditory screening method comprising: attaching an electrode to a subject's scalp; inserting a probe, including a transmitter and a receiver, in a subject's ear; transmitting a first stimulus signal from the transmitter into the subject's ear; receiving a first response signal from the subject's ear via the receiver; sensing a second response signal from the subject's scalp via the electrode; and processing the first response signal to provide an evoked otoacoustic emission signal and the second response signal to provide an auditory evoked potential signal.
Claim 13
Dependent Claim
86 words
An auditory screening method comprising: attaching an electrode to a subject's scalp; inserting a probe, including a transmitter and a receiver, in a subject's ear; transmitting a first stimulus signal from the transmitter into the subject's ear; receiving a first response signal from the subject's ear via the receiver; sensing a second response signal from the subject's scalp via the electrode; and processing the first response signal to provide an evoked otoacoustic emission signal and the second response signal to provide an auditory evoked potential signal.
Claim 14
Dependent Claim
15 words
The method of claim 11 wherein the first stimulus signal comprises an amplitude modulated signal.
Claim 15
Dependent Claim
17 words
The method of claim 11 wherein the first stimulus signal comprises at least one paired tonal stimuli.
Claim 16
Dependent Claim
16 words
The method of claim 11 further comprising processing the first and second response signals in parallel.
Claim 17
Dependent Claim
15 words
The method of claim 11 further comprising processing the first and second response signals simultaneously.
Claim 18
Dependent Claim
24 words
The method of claim 11 further comprising displaying one or more characteristics of the evoked otoacoustic emission signal and the auditory evoked potential signal.
Claim 19
Dependent Claim
42 words
The method of claim 9 further comprising: generating a second stimulus signal; transmitting the second stimulus signal into the subject's ear; receiving a third response signal from the subject's ear; and processing the third response signal to provide an acoustic reflectivity signal.
Claim 20
Dependent Claim
93 words
An auditory screening method comprising: attaching an electrode to a subject's scalp; inserting a probe in a subject's ear; generating a first stimulus signal comprising a plurality of paired tonal stimuli; transmitting the first stimulus signal from the probe into the subject's ear; receiving a first response signal from the subject's ear via the probe; sensing a second response signal from the subject's scalp via the electrode; and processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory evoked potential signal.
Claim 21
Dependent Claim
93 words
An auditory screening method comprising: attaching an electrode to a subject's scalp; inserting a probe in a subject's ear; generating a first stimulus signal comprising a plurality of paired tonal stimuli; transmitting the first stimulus signal from the probe into the subject's ear; receiving a first response signal from the subject's ear via the probe; sensing a second response signal from the subject's scalp via the electrode; and processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory evoked potential signal.
Claim 22
Dependent Claim
16 words
The method of claim 18 further comprising processing the first and second response signals in parallel.
Claim 23
Dependent Claim
42 words
The method of claim 14 further comprising: generating a second stimulus signal; transmitting the second stimulus signal into the subject's ear; receiving a third response signal from the subject's ear; and processing the third response signal to provide an acoustic reflectivity signal.
Claim 24
Dependent Claim
70 words
An auditory screening method comprising: attaching an electrode to a subject's scalp; inserting a probe in a subject's ear; transmitting a stimulus signal into the subject's ear; receiving a response signal from the subject's ear via the probe; and averaging the response signal over a plurality of intervals to produce a plurality of subaverages; inversely weighting each subaverage; and combining the inversely weighted subaverages to produce an auditory indication signal.
Claim 25
Dependent Claim
70 words
An auditory screening method comprising: attaching an electrode to a subject's scalp; inserting a probe in a subject's ear; transmitting a stimulus signal into the subject's ear; receiving a response signal from the subject's ear via the probe; and averaging the response signal over a plurality of intervals to produce a plurality of subaverages; inversely weighting each subaverage; and combining the inversely weighted subaverages to produce an auditory indication signal.
Claim 26
Dependent Claim
23 words
The method of claim 21 wherein the auditory indication signal is an evoked otoacoustic emission signal and or an auditory evoked potential signal.
Claim 27
Dependent Claim
15 words
The method of claim 21 wherein the first stimulus signal comprises an amplitude modulated signal.
Claim 28
Dependent Claim
20 words
The method of claim 21 further comprising inversely weighting each subaverage based the variance and content of the response signal.
Claim 29
Dependent Claim
21 words
The method of claim 21 wherein the combining step comprises averaging the inversely weighted subaverages to produce an auditory indication signal.
Claim 30
Dependent Claim
48 words
The method of claim 25 wherein the combining step comprises: performing a Fourier transform for each subaverage; determining real and imaginary components of the Fourier transform at specified frequencies; independently estimating variance of each component; and determining the probability of an auditory indication signal using an F statistic.
Claim 31
Dependent Claim
95 words
An audiometric apparatus comprising: a hand-held housing; a signal processor, disposed in the housing, for generating a first and second stimulus signals; a probe extending from the housing and insertible in a subject's ear, the probe including (i) a transmitter for transmitting the first and second stimulus signals into the subject's ear and (ii) a receiver for receiving first and second response signals from the subject's ear; and the signal processor processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory indication signal.
Claim 32
Dependent Claim
95 words
An audiometric apparatus comprising: a hand-held housing; a signal processor, disposed in the housing, for generating a first and second stimulus signals; a probe extending from the housing and insertible in a subject's ear, the probe including (i) a transmitter for transmitting the first and second stimulus signals into the subject's ear and (ii) a receiver for receiving first and second response signals from the subject's ear; and the signal processor processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory indication signal.
Claim 33
Dependent Claim
19 words
The apparatus of claim 27 wherein the auditory indication signal is a tympanometry signal or an acoustic reflectivity signal.
Claim 34
Dependent Claim
15 words
The apparatus of claim 27 wherein the first stimulus signal comprises an amplitude modulated signal.
Claim 35
Dependent Claim
16 words
The apparatus of claim 27 wherein first stimulus signal comprises at least one paired tonal stimuli.
Claim 36
Dependent Claim
18 words
The apparatus of claim 27 wherein the signal processor processes the first and second response signals in parallel.
Claim 37
Dependent Claim
119 words
The apparatus of claim 27 further comprising: a digital signal processing element; a memory electrically coupled to the digital signal processing element; a digital-to-analog converter electrically coupled to the digital signal processing element for converting the first stimulus signal from a digital format into an analog format; an attenuator electrically coupled to the digital-to-analog converter for regulating the first stimulus signal; an amplifier electrically coupled to the receiver for providing amplified first response signals; a filter electrically coupled to the amplifier for filtering the first and second response signals; an analog-to-digital converter electrically coupled to the filter for converting the first and second response signals from an analog format into a digital format for the digital signal processing element.
Claim 38
Dependent Claim
76 words
The apparatus of claim 27 further comprising: a control processor for requesting an evoked otoacoustic emission signal and an auditory evoked potential signal; a display electrically coupled to the control processor for displaying one or more characteristics of the evoked otoacoustic emission signal and the auditory evoked potential signal; and an input device electrically coupled to the control processor to enable a user to request the evoked otoacoustic emission signal and the auditory evoked potential signal.
Claim 39
Dependent Claim
46 words
The apparatus of claim 27 further comprising a docking station for receiving the housing, the docking station including a battery charger for recharging the signal processor and a printer for printing one or more characteristics of evoked otoacoustic emission signal and the auditory evoked potential signal.
Claim 40
Dependent Claim
68 words
An auditory screening method comprising: inserting a probe, including a transmitter and receiver, in a subject's ear; transmitting first and second stimulus signals from the transmitter into the subject's ear; receiving first and second response signals from the subject's ear via the receiver; and processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory indication signal.
Claim 41
Dependent Claim
68 words
An auditory screening method comprising: inserting a probe, including a transmitter and receiver, in a subject's ear; transmitting first and second stimulus signals from the transmitter into the subject's ear; receiving first and second response signals from the subject's ear via the receiver; and processing the first response signal to provide an evoked otoacoustic emission signal and processing the second response signal to provide an auditory indication signal.
Claim 42
Dependent Claim
19 words
The method of claim 35 wherein the auditory indication signal is a tympanometry signal or an acoustic reflectivity signal.
Claim 43
Dependent Claim
19 words
The method of claim 35 further comprising displaying the evoked otoacoustic emission signal and the auditory evoked potential signal.
References Cited (Backward Citations)
US4374526A
Cited
US4462411A
Cited
US4561449A
Cited
US4493237A
Cited
US4846190A
Cited
US4610259A
Cited
US4579125A
Cited
US4548082A
Cited
US4688582A
Cited
US4884447A
Cited
US4913160A
Cited
US5243517A
Cited
US5003986A
Cited
US5081441A
Cited
US5098904A
Cited
US5143081A
Cited
US5230344A
Cited
US5372142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |