US4928705A — Acoustic aneurysm detector and associated method

Claim 1

Independent Claim 124 words

An acoustic intracranial aneurysm detector consisting of as plurality of hydrophone sensors adapted to be in contact with a patient for receiving sound emanating from said patient and for converting the sound to be responsive electronic signals, means for adjustably positioning said sensors in contact with the patient's head, electronic means for filtering and amplifying the responsive electric signals to create processed electrical signals, and analysis means operatively associated with said electronic means for receiving said processed electrical signals and for simultaneously providing an output indication of the frequency and relative magnitude of said sound at each of a plurality of time intervals within a cardiac cycle of said patient, whereby the presence or absence of an aneurysm in said patient can be detected.

Claim 2

Dependent Claim 124 words

An acoustic intracranial aneurysm detector consisting of as plurality of hydrophone sensors adapted to be in contact with a patient for receiving sound emanating from said patient and for converting the sound to be responsive electronic signals, means for adjustably positioning said sensors in contact with the patient's head, electronic means for filtering and amplifying the responsive electric signals to create processed electrical signals, and analysis means operatively associated with said electronic means for receiving said processed electrical signals and for simultaneously providing an output indication of the frequency and relative magnitude of said sound at each of a plurality of time intervals within a cardiac cycle of said patient, whereby the presence or absence of an aneurysm in said patient can be detected.

Claim 3

Dependent Claim 19 words

The detector of claim 1, wherein said plurality of hydrophone sensors includes a hydrophone sensor for monitoring room noise.

Claim 4

Dependent Claim 24 words

The detector of claim 2, wherein said means for positioning is further adapted to position one of said hydrophone sensors on said patient's neck.

Claim 5

Dependent Claim 15 words

The detector of claim 3, wherein said hydrophone sensors are at least six in number.

Claim 6

Dependent Claim 38 words

The detector of claim 4, wherein five of said hydrophone sensors are adapted to be positioned for monitoring said sound from said aneurysm and one of said hydrophone sensors is adapted to be positioned for monitoring biological noise.

Claim 7

Dependent Claim 25 words

The detector of claim 1, including wherein said positioning means includes helmet-like means for mounting said hydrophone sensors and for positioning on said patient's head.

Claim 8

Dependent Claim 27 words

The detector of claim 6, including said helmet-like means having a central hub and a plurality of fingers which have disposed on their ends said hydrophone sensors.

Claim 9

Dependent Claim 25 words

The detector of claim 7, including said fingers having adjustment means, whereby said hydrophone sensors are adapted to be in contact with said patient's head.

Claim 10

Dependent Claim 21 words

The detector of claim 8, including said adjustment means including tongue and groove means which are slidable relative to each other.

Claim 11

Dependent Claim 20 words

The detector of claim 9, including said helmet-like means having five fingers with one said hydrophone sensor associated with each.

Claim 12

Dependent Claim 20 words

The detector of claim 1, including said electronic means having a plurality of signal channel means and power supply means.

Claim 13

Dependent Claim 21 words

The detector of claim 11, including said signal channel means having an EKG channel and a plurality of sensor channel means.

Claim 14

Dependent Claim 18 words

The detector of claim 12, including said sensor channel means being provided for each of said hydrophone sensors.

Claim 15

Dependent Claim 33 words

The detector of claim 13, including said sensor channel means having filter means and amplifier means for converting said responsive electrical signals into said processed electrical signals for input into said analysis means.

Claim 16

Dependent Claim 42 words

The detector of claim 1, including said analysis means comprising analog to digital converter means for digitization of said processed electrical signals and computer means for receiving, analyzing and outputting said indication of the frequency of said digitized and converted sound signals.

Claim 17

Dependent Claim 22 words

The detector of claim 15, including said computer means having multichannel digitization software for analyzing and outputting said digitized and converted sound.

Claim 18

Dependent Claim 18 words

The detector of claim 16, including said digitization software outputting a frequency versus time indication of said sound.

Claim 19

Dependent Claim 33 words

The detector of claim 17, including said software having means capable of presenting output information which presents a visual display which enables a viewer to determine whether a bruit or a spike exists.

Claim 20

Dependent Claim 20 words

The detector of claim 18, including said software having means capable of outputting a Fourier Fast Transform of said sound.

Claim 21

Dependent Claim 19 words

The detector of claim 19, including said software having means capable of outputting a spectrogram analysis of said sound.

Claim 22

Dependent Claim 19 words

The detector of claim 18, including said software having means capable of outputting a spectrogram analysis of said sound.

Claim 23

Dependent Claim 20 words

The detector of claim 21, including said software having means capable of outputting a Fourier Fast Transform of said sound.

Claim 24

Independent Claim 129 words

A method of detecting the presence or absence of an aneurysm in a patient comprising the steps of providing an acoustic aneurysm detector including a plurality of hydrophone sensors an electronic means, and analysis means, mounting said hydrophone sensors means on said patient to receive a sound from said patient, converting said sound by said hydrophone sensors to responsive electrical signals, amplifying and filtering said responsive electrical signals by said electronic means to create processed electrical signals, delivering said processed electrical signals to said analysis means, and outputting a simultaneous indication of the frequency and relative magnitude of said sound at each of a plurality of time intervals within a cardiac cycle of said patient, whereby the presence or absence of said aneurysm in a patient may be detected.

Claim 25

Independent Claim 129 words

A method of detecting the presence or absence of an aneurysm in a patient comprising the steps of providing an acoustic aneurysm detector including a plurality of hydrophone sensors an electronic means, and analysis means, mounting said hydrophone sensors means on said patient to receive a sound from said patient, converting said sound by said hydrophone sensors to responsive electrical signals, amplifying and filtering said responsive electrical signals by said electronic means to create processed electrical signals, delivering said processed electrical signals to said analysis means, and outputting a simultaneous indication of the frequency and relative magnitude of said sound at each of a plurality of time intervals within a cardiac cycle of said patient, whereby the presence or absence of said aneurysm in a patient may be detected.

Claim 26

Dependent Claim 16 words

The method of claim 23, including maintaining intimate contact of said hydrophone sensors with said patient.

Claim 27

Dependent Claim 25 words

The method of claim 24, wherein said mounting step includes providing helmet-like means to hold said hydrophone sensors in intimate contact with said patient's head.

Claim 28

Dependent Claim 13 words

The method of claim 23, including maintaining said patient in a reclining position.

Claim 29

Dependent Claim 27 words

The method of claim 23, including processing said processed electrical signals by a Fast Fourier Transform and outputting a Digital Fourier Transform of said processed electrical signals.

Claim 30

Dependent Claim 24 words

The method of claim 23, including processing said processed electrical signals by a spectrogram analysis and outputting a spectrogram of said processed electrical signals.

Claim 31

Dependent Claim 93 words

A sensor device for use in determining the presence or absence of an aneurysm in a patient comprising a plurality of hydrophone sensors a helmet-like device adapted to be worn on said patient's head including means for receiving said plurality of hydrophone sensors said hydrophone sensors being received within said receiving means such that said sensors are adapted to be in contact with said patient's head, and said helmet-like device having a central hub, and wherein said receiving means includes a plurality of fingers which have disposed on their ends said hydrophone sensors.

Claim 32

Dependent Claim 93 words

A sensor device for use in determining the presence or absence of an aneurysm in a patient comprising a plurality of hydrophone sensors a helmet-like device adapted to be worn on said patient's head including means for receiving said plurality of hydrophone sensors said hydrophone sensors being received within said receiving means such that said sensors are adapted to be in contact with said patient's head, and said helmet-like device having a central hub, and wherein said receiving means includes a plurality of fingers which have disposed on their ends said hydrophone sensors.

Claim 33

Dependent Claim 24 words

The detector of claim 29, including said fingers having adjustment means, whereby intimate contact of said hydrophone, sensors with said patient's head is maintained.

Claim 34

Dependent Claim 14 words

The detector of claim 30, including said adjustment means including tongue and groove means.

Claim 35

Dependent Claim 25 words

The detector of claim 31, including said plurality of finger comprises five fingers with a said hydrophone sensors associated with each of said five fingers.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-05-28	1993-11-27	1994-05-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-05-28	1997-11-27	1998-05-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-05-28	2001-11-27	2002-05-29	$7700.00	Window Closed / Lapsed

Acoustic aneurysm detector and associated method

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