Device for wide-band auscultation

Abstract

The present invention relates to a device for auscultation of a body. An embodiment of the device includes a housing dimensioned and configured for disposition in an operative orientation relative to a predetermined portion of the body. The housing includes a plurality of chambers disposed therewithin. The plurality of chambers are collectively structured to receive an acoustic signal at least when the housing is disposed in the operative orientation. The housing also includes at least one transducer at least partially disposed in a corresponding one of the chambers. The transducer is structured to convert the acoustic signal into an electrical signal.

Description

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a device for auscultation of a body. An embodiment of the device includes a housing dimensioned and configured for disposition in an operative orientation relative to a predetermined portion of the body, the housing having a plurality of chambers disposed therewithin.

Description of the Related Art

Auscultation, or the term for listening to the internal sounds of a body, is of great importance to many disciplines, such as the medical fields. For example, auscultation of a body, such as the body of a patient, assists a medical professional in the diagnosis of ailments that may affect the patient. Such may be traditionally achieved with a stethoscope, which may use a wide bell and/or a diaphragm to listen to a narrow range of low frequency acoustic signals, such as those associated with patient's heartbeat. However, such approaches are fundamentally inadequate for many other diagnostic purposes, such as receiving acoustic signals associated with higher frequency signals.

Accordingly, what is needed in the art is a device structured to receive acoustic signals in a wider band of frequencies, including but not limited to high-frequency sounds. Such acoustic signals include frequencies associated with other functions of the body useful in diagnosis, such as swallowing, breathing, and blood flow, and are outside the capabilities of traditional stethoscope devices.

Further, what is needed in the art is a system incorporating such a device. Such a system may incorporate the device to facilitate in the diagnosis of patients and/or other medical procedures carried out by medical professionals. Such a system would utilize the acoustic signals received by the device process the signals to assist in detection of, for example, disorders of the gut, the joints, the lungs, blood flow, or swallowing.

SUMMARY OF THE INVENTION

The present invention relates to a device for auscultation of a body, such as the body of a patient. An illustrative embodiment of a device in accordance with the present invention comprises a housing dimensioned and configured for disposition in an operative orientation relative to a predetermined portion of the body. Examples of such predetermined portion of the body include but are not limited to the throat and area corresponding to the lungs.

Included within the housing are a plurality of chambers collectively structured to receive an acoustic signal at least when the housing is disposed in the operative orientation. The acoustic signals are produced by the body and may correlate with various bodily processes, conditions, etc. Receiving such signals may facilitate in diagnostics and other medical procedures. Accordingly, the plurality of chambers are cooperatively structured and/or shaped such that acoustic signals produced by the body enter the device for detection.

Additionally, at least partially disposed within one of the plurality of chambers is at least one transducer. The transducer is structured to convert the audio signal received by the device into an electrical signal. By way of example only, the transducer may comprise a microphone. The electrical signal may then be transmitted to other elements of a diagnostic system, as will be further described herein.

A preferred embodiment of the present invention further comprises proximal and distal ends, the proximal end being structured to define an opening. The opening is dimensioned and configured for engagement with the predetermined portion of the body.

Further, the plurality of chambers comprises an acoustic capture chamber in a sound receiving relationship to the opening. Accordingly, the sound receiving relationship permits the passage of the acoustic signal from the opening to at least the acoustic capture chamber. In the preferred embodiment, this is achieved by way of the opening permitting entry of the acoustic signal into the acoustic capture chamber.

It should be appreciated that the shape of the acoustic capture chamber may vary among the various embodiments of the present invention. However, in a preferred embodiment, the diameter of the distal end of the acoustic capture chamber is less than or equal to the diameter of a proximal end. An example of a geometric shape having such a configuration wherein one end comprises a smaller diameter than an opposing end is a frustum of a right circular cone. Accordingly, various embodiments of an acoustic capture chamber may comprise such a configuration. However, the acoustic chamber may comprise any suitable shape in accordance with the present invention, including but not limited to the foregoing.

In addition, the plurality of chambers comprises a primary resonance chamber disposed in sound receiving relation to the acoustic capture chamber. In a preferred embodiment, the transducer is at least partially disposed within the primary resonance chamber. In addition, in a preferred embodiment, the transducer is movably disposed in the primary resonance chamber.

Moreover, a preferred embodiment of the primary resonance chamber comprises a resonance adjustment member movably disposed within the primary resonance chamber. Adjustment of the resonance adjustment member, such as by moving it within the primary resonance chamber, facilitates alteration of acoustic properties of the device. Further, in a preferred embodiment such adjustment may be carried out during use of the device.

A preferred embodiment further comprises a secondary resonance chamber disposed in a sound receiving relationship relative to the acoustic capture chamber. The secondary resonance chamber facilitates “tuning” of the device, such as by adjusting a range of acoustic signals that the device receives or to which it is most sensitive. In a preferred embodiment, this is accomplished by altering the physical parameters, such as the volume, of the secondary resonance chamber. Further, in a preferred embodiment, at least one transducer is movably disposed at least partially within the secondary resonance chamber. Accordingly, moving of the transducer facilitates “tuning” of the device, such as by altering the resonant properties of the device.

The present invention further relates to a signal processing system. In a preferred embodiment of the system, at least one device is in communication with a plurality of components collectively configured to process an electrical signal received from the device. The electrical signal corresponds to the acoustic signal received by the device from the body. The plurality of components in the preferred embodiment includes an amplification component, a digital signal processing component, an analysis component, a pattern recognition component, and at least one output component.

These and other objects, features and advantages of the present invention will become clearer when the drawings as well as the detailed description are taken into consideration.

BRIEF DESCRIPTION OF THE DRAWINGS

For a fuller understanding of the nature of the present invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:

FIG. 1 is a schematic representation of a side view of an illustrative embodiment of a device in accordance with the present invention.

FIG. 2 is a schematic representation of a bottom view of the embodiment of FIG. 1.

FIG. 3 is a schematic representation of an illustrative embodiment of a system in accordance with the present invention.

FIG. 4 is a schematic representation of a side view of an illustrative embodiment of a device in accordance with the present invention.

FIG. 5 is a schematic representation of a side view of an illustrative embodiment of a device in accordance with the present invention.

FIG. 6 is a schematic representation of a side view of the embodiment of FIG. 5.

FIG. 7 is a schematic representation of a side view of an illustrative embodiment of a device in accordance with the present invention.

Like reference numerals refer to like parts throughout the several views of the drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

As illustrated in the accompanying drawings, the present invention is directed to a device and system for auscultation of a body. As described above, auscultation relates to the practice of capturing acoustic signals produced by the body, such as but not limited to for purposes of medical diagnosis. Accordingly, it should be appreciated that the body may be a human body, i.e. a patient, but may also be any other suitable source of acoustic signals.

In accordance with the illustrative embodiment as shown in FIG. 1, a device 1 comprises a housing 50. The housing 50 is dimensioned and configured for disposition in an operative orientation relative to a predetermined portion of the body. For example, the housing 50 may be placed relative to and/or against a portion of the body that corresponds to a patient's throat, such as for purposes of monitoring acoustic signals associated with a patient's breathing and/or swallowing.

Accordingly, the housing 50 comprises a plurality of chambers 10, 30, 40 disposed within the housing. The chambers are collectively structured to receive an acoustic signal produced by the body. In a preferred embodiment, the chambers 10, 30, 40 are collectively structured such that receiving the acoustic signal causes the housing 50 to resonate. Further, in a preferred embodiment, chambers 10, 30, 40 are collectively structured such that housing 50 resonates at a frequency and/or frequencies within the range of about 20 Hertz to about 2,000 Hertz. In addition, the housing 50 in a preferred embodiment comprises a material of construction chosen for particular resonant properties.

With further reference to FIG. 1, the housing 50 comprises a proximal end 50′ and a distal end 50″. The proximal end 50′ is structured for disposition in an operative orientation relative to a predetermined portion of the body, such as an area of the neck, throat, an area of the chest, and/or any other desired or suitable area. Such disposition of the proximal end 50′ comprises engagement of the housing 50 with the body such that the housing 50 and the body define a confronting engagement with one another.

Further, the proximal end 50′ is structured to include an opening 55. The opening 55 is dimensioned and configured for engagement with the predetermined portion of the body when the housing 50 is in the operative orientation. Engagement of the opening 55 with the body includes disposition of the opening 55 in close proximity to the body such that acoustic signals produced by the body pass through the opening 55 and into the housing 50. Accordingly, various embodiments of the present invention may comprise varying configurations and/or dimensions of openings 55 suitable for engagement with varying predetermined portions of the body, as may be determined by e.g. the size and location of the predetermined portion of the body.

The plurality of chambers 10, 30, 40 of the embodiment of FIG. 1 comprises an acoustic capture chamber 10. The acoustic capture chamber 10 is disposed in a sound receiving relationship relative to the opening 55. Accordingly, the opening 55 facilitates passage of acoustic signals into the acoustic capture chamber 10.

FIG. 2 shows the embodiment of FIG. 1 as seen from a view toward the opening 55. The acoustic capture chamber comprises a proximal end 10′ and a distal end 10″. Further, various embodiments of an acoustic capture chamber 10 comprising various configurations are contemplated. As is evident from FIG. 2, in a preferred embodiment, the distal end 10″ of the acoustic capture chamber 10 comprises a diameter less than a diameter of the proximal end 10′. FIG. 4 illustrates a preferred embodiment wherein the distal end 10″ of the acoustic capture chamber 10 comprises a diameter equal to a diameter of the proximal end 10′.

With further reference to FIG. 1, a preferred embodiment of the device 1 comprises a primary resonance chamber 30. The primary resonance chamber 30 is disposed in a sound receiving relationship relative to the acoustic capture chamber 10. Accordingly, acoustic signals produced by the body that are captured and/or received by the acoustic capture chamber 10 are received by the primary resonance chamber 30.

Further, adjustment of the resonant properties of the housing 50 may be accomplished. This may even be accomplished during use of the device 1. For example, varying of internal dimensions of the chambers 10, 30, 40 facilitates the altering in at least one embodiment of the frequency and/or frequencies at which the housing 50 resonates. Further, as shown in the preferred embodiment of FIGS. 5 and 6, a resonance adjustment member 60 is movably disposed at least partially within the primary resonance chamber 30. FIGS. 5 and 6 demonstrate two possible positions of the resonance adjustment member 60 within the primary resonance chamber 30, but should not be taken as being the only positions contemplated or otherwise be construed as limiting. Accordingly, moving, such as by sliding, telescoping, and/or any other suitable method, of the resonance adjustment member 60 within the primary resonance chamber 30 facilitates the alteration of resonant properties of the housing 50, and accordingly may facilitate a change in the acoustic signals which the device receives or to which the device is most tuned.

The embodiment of FIG. 1 further comprises a secondary resonance chamber 40 disposed in a sound receiving relationship relative to the acoustic capture chamber 10. The secondary resonance chamber facilitates “tuning” of the device 1, which should be understood as the adjusting of the range of acoustic signals that the device 1 receives or to which it is most sensitive. This may be accomplished by, for example, varying the dimensions of the secondary resonance chamber 40. Further, a proximal end 40′ of the secondary resonance chamber 40 is in communication with the distal end 10″ of the acoustic capture chamber 10. Additionally, a distal end 40″ of the secondary resonance chamber is in communication with the proximal end 30′ of the primary resonance chamber 30.

In various embodiments of the device 1, the acoustic capture chamber 10 and the secondary resonance chamber 40 are in fluid communication. Accordingly, the distal end 10″ of the acoustic capture chamber and the proximal end 40′ of the secondary resonance chamber are correspondingly structured such that fluid, e.g. air, passes between the two chambers 10, 40. This may further facilitate communication of acoustic signals between the chambers 10, 40.

A preferred embodiment of a device 1, such as that of FIG. 1, further comprises at least one transducer 20 or, as shown in FIG. 7, a plurality of transducers 20, 22. An example of a transducer 20, 22 includes but is not limited to a microphone. The transducer 20, 22, such as shown in FIG. 1, is structured to convert the acoustic signal into at least one electrical signal. The electrical signal may then be processed, such as to facilitate diagnosis.

In addition, and with further reference to FIG. 1, the transducer 20 is disposed at least partially within the primary resonance chamber 30. However, the transducer 20 is not limited to disposition within the primary resonance chamber. Accordingly, it is contemplated that various other embodiments in accordance with the present invention comprise a transducer disposed at least partially in a corresponding one of the chambers 10, 30, 40.

Further, still other embodiments comprise a plurality of transducers, each of which is at least partially disposed in corresponding ones of the plurality of chambers 10, 30, 40. For example, and with reference to FIG. 7, at least one transducer, but preferably a plurality of transducers 20, 22 are disposed within the housing 50. Specifically, a first transducer 20 is preferably disposed at least partially within the primary resonance chamber 30, and a second transducer 22 is preferably disposed at least partially within the secondary resonance chamber 40. Further, the transducers 20, 22 may be movably disposed at least partially within their respective chamber. Accordingly, the transducers are independently and/or collectively moveable within their respective chamber or chambers. This facilitates alteration of the resonant properties of the housing 50 and/or altering the frequencies of acoustic signals received by the transducers 20, 22 for conversion into at least one electrical signal.

Turning now to FIG. 3, an embodiment of a system 2 in accordance with the present invention is provided. The system 2 comprises a device 1 for auscultation of a body. It should be appreciated that the device 1 may be the embodiment of FIG. 1, but may also be any embodiment of a device 1 consistent with the present invention. In a preferred embodiment of a system 2 as illustrated in FIG. 3, the device 1 is in communication with a plurality of components 100, 200, 300, 400, 500, 510. The components include, but are not limited to, a processing component 200, an analysis component 300, a pattern recognition component 400, and at least one output component 500, 510. The output components may comprise a display component 500 and an audio output component 510. Further, the system 2 may be configured to process the electronic signal using Dynamic Range Control and Equalization.

The amplification component 100 is structured to amplify an electronic signal received from the device 1. An example of an amplification component is a microphone preamplifier.

The processing component 200 is structured to process the amplified signal received from the amplification component 200. The processing component 200 comprises a digital signal processor. Further, the processing component 200 is structured to process the amplified signal to facilitate further analysis. Additionally, the processing component 200 may be structured to incorporate pre-post AGC filtering, audio frequency dynamic range control and/or equalization. In a preferred embodiment, an audio output component 510 is in communication with the processing component 200. Accordingly, the audio output component 510 is structured to facilitate listening to the processed signal, such as by a medical professional. An example of an audio output component 510 includes headphones.

The analysis component 300 receives the processed signal from the processing component 200. The analysis component 300 is structured to produce an analyzed signal. Accordingly, the analysis component 300 may perform e.g. a Fast Fourier Transform analysis to produce the analyzed signal.

The analyzed signal is then transmitted to a pattern recognition component 400 structured to recognize patterns in the analyzed signal, such as those pertaining to any combination of the frequency, intensity or time domain. Further, the pattern recognition component 400 may be configured to match detected patterns in the analyzed signal with potential diagnosis and/or medical conditions. Accordingly, the pattern recognition component 400 is configured to output the potential diagnosis and/or medical condition in accordance with the corresponding detected pattern or patterns. The analyzed signal is further transmitted to a display component 500. Examples of a display component 500 include visual display devices structured for the output of a spectrogram. The display component 500 in various embodiments may further be configured to highlight issues detected by the system 2 and/or that may facilitate or otherwise aid in the diagnosis process.

Since many modifications, variations and changes in detail can be made to the described preferred embodiment of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.

Now that the invention has been described,

Claims

1. A device for auscultation of a body, said device comprising: a housing dimensioned and configured for disposition in an operative orientation relative to a predetermined portion of the body,said housing having a proximal end and a distal end, said proximal end of said housing including an opening dimensioned and configured for engagement with the predetermined portion of the body when said housing is in said operative orientation,said housing including at least an acoustic capture chamber, a primary resonance chamber, and a secondary resonance chamber,said acoustic capture chamber further disposed in abutting relation to said opening,said secondary resonance chamber disposed between said acoustic capture chamber and said primary resonance chamber in sound communicating relationship therebetween, andat least one transducer at least partially disposed in a corresponding one of said chambers and structured to convert the acoustic signal into an electrical signal.

2. A device as recited in claim 1, wherein said acoustic capture chamber comprises a distal end having a diameter equal to a diameter of a proximal end of said acoustic capture chamber.

3. A device as recited in claim 1, wherein said acoustic capture chamber comprises a distal end having a diameter less than a diameter of a proximal end of said acoustic capture chamber.

4. A device as recited in claim 1, said one transducer being disposed at least partially within said primary resonance chamber.

5. A device as recited in claim 1, said one transducer being movably disposed at least partially within said primary resonance chamber.

6. A device as recited in claim 1, said one transducer being disposed at least partially within said secondary resonance chamber.

7. A device as recited in claim 1, said one transducer being movably disposed within said secondary resonance chamber.

8. A device as recited in claim 1, said secondary resonance chamber being disposed between said primary resonance chamber and said acoustic capture chamber.

9. A device as recited in claim 1, said acoustic capture chamber and said secondary resonance chamber being in fluid communication with one another.

10. A device as recited in claim 1, further comprising at least one resonance adjustment member movably disposed within said primary resonance chamber.

11. A device for auscultation of a body, said device comprising: a housing having a proximal end and a distal end,said proximal end of said housing being dimensioned and configured to define an opening dimensioned and configured for operative engagement with a predetermined portion of the body,an acoustic capture chamber in abutting relation and fluid communication with said opening of said housing and structured to receive an acoustic signal produced by the body at least when said housing is in said operative engagement,a secondary resonance chamber disposed in abutting relation and fluid communication with said acoustic capture chamber,a primary resonance chamber disposed in abutting relation and fluid communication with said secondary resonance chamber, andat least one transducer disposed within said primary resonance chamber and structured to convert the acoustic signal into an electrical signal.

12. A device as recited in claim 11, said one transducer being movably disposed at least partially within said primary resonance chamber.

13. A device as recited in claim 11, further comprising at least one resonance adjustment member movably disposed within said primary resonance chamber in acoustic property altering relation thereto.

14. A device as recited in claim 11, said acoustic capture chamber comprising a distal end having a diameter equal to a diameter of a proximal end of said acoustic capture chamber.

15. A device as recited in claim 11, said acoustic capture chamber comprising a distal end having a diameter less than a diameter of a proximal end of said acoustic capture chamber.

16. A device as recited in claim 11, said one transducer being disposed at least partially within said secondary resonance chamber.

17. A device as recited in claim 11, said one transducer being movably disposed at least partially within said secondary resonance chamber.

18. A device as recited in claim 11, said secondary resonance chamber being disposed between said acoustic capture chamber and said primary resonance chamber.

19. A device as recited in claim 11, said acoustic capture chamber, said primary resonance chamber, and said secondary resonance chamber correspondingly structured and disposed to receive the acoustic signal at least when said housing is in said operative orientation.

20. A device for auscultation of a body, said device comprising: a housing having a proximal end and a distal end,said proximal end of said housing being dimensioned and configured to define an opening dimensioned and configured for operative engagement with a predetermined portion of the body,an acoustic capture chamber in fluid communication with said opening of said housing and structured to receive an acoustic signal produced by the body at least when said housing is in said operative engagement,a primary resonance chamber disposed in a sound receiving relationship relative to said acoustic capture chamber,a secondary resonance chamber disposed in a sound receiving relationship relative to said acoustic capture chamber, anda plurality of transducers disposed within said housing and each structured to convert the acoustic signal into at least one electrical signal, andsaid plurality of transducers comprising at least a first transducer disposed within said primary resonance chamber and a second transducer disposed within said secondary resonance chamber, said first transducer and said second transducer further disposed in sound receiving relationship relative to each other.

21. A device as recited in claim 20, wherein said first transducer is movably disposed within said primary resonance chamber.

22. A device as recited in claim 21, wherein said second transducer is movably disposed within said secondary resonance chamber.

23. A device as recited in claim 20, wherein said second transducer is movably disposed within said secondary resonance chamber.

24. A device as recited in claim 23, wherein said first transducer is movably disposed within said primary resonance chamber.