MICROPHONE ARRAYS FOR LISTENING TO INTERNAL ORGANS OF THE BODY

• US 20110137209A1
• Filed: 11/02/2010
• Published: 06/09/2011
• Est. Priority Date: 11/04/2009
• Status: Abandoned Application

• Current Assignee: Gary and Mary West Health Institute
• Original Assignee: Gary and Mary West Health Institute
• Inventors: Mehregany, Mehran, LAHIJI, ROSA R.
• Application Number:
  US12/917,848
• Publication Number:
  US 20110137209A1
• Time in Patent Office: Days
• US Class Current: 600/586
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/113 occurring during breathing
• CPC Class Codes: A61B 7/026 comprising more than one sound collector
• CPC Class Codes: A61B 7/04 Electric stethoscopes microphones, acoustic transducers therefor H04R
• CPC Class Codes: H04R 1/406 microphones
• CPC Class Codes: H04R 2201/401 2D or 3D arrays of transducers
• CPC Class Codes: H04R 2430/20 Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic H04R2203/12 takes precedence

Abstract

An electronic device is provided for receiving sounds from a body. A microphone array receives the sounds. An analysis system optionally provides for directional control, such as by providing virtual focusing and beam steering. Body sounds are preferably de-convolved. In certain embodiments, a plurality of buffer structures are located in cavities in a patch adjacent the microphones to provide for improved sound pick-up. In certain embodiments, at least two of microphones are spaced at least 2 centimeters apart. Preferably, wireless transmission circuitry sends information relating to the sounds in the body, and optionally receives information, such as control or status information. Target selection and acquisition systems provide for the effective capture of multiple sounds from the body, even when the device is adhered to the body by the user, that is, not a skilled physician.

Claims

1. An electronic device for receiving sounds in a body, comprising:

a plurality of microphones,

a plurality of buffer structures,

a patch structure, the patch structure including at least a patient side surface and an opposed side surface, the patch including a plurality of cavities, the cavities being adapted to receive the buffer structures and to maintain the buffer structures adjacent the plurality of microphones, at least two of the plurality of microphones being spaced at least 2 centimeters apart, and

device electronics, the device electronics including;

signal processing circuitry to analyze the sounds in the body, and

wireless transmission circuitry for sending information relating to the sounds in the body.

2. The electronic device of claim 1 wherein the buffer structure is rubber.

3. The electronic device of claim 1 wherein the buffer structure is metal.

4. The electronic device of claim 1 wherein the device includes adhesive to adhere the device to the body.

5. The electronic device of claim 1 wherein the chambers are 2 mm or less across.

6. The electronic device of claim 1 wherein the chambers are 3 mm or less across.

7. The electronic device of claim 1 wherein the device includes a directional processing system.

8. The electronic device of claim 1 wherein the device electronics de-convolve sounds in the body.

9. The electronic device of claim 1 wherein the device includes a noise cancellation system.

10. The electronic device of claim 1 wherein the device includes target selection circuitry.

11. An electronic scope for receiving sounds in a body, comprising:

a microphone array structure, the structure including at least;

a first microphone, the first microphone including an electrical output corresponding to sounds in the body,

a second microphone, the second microphone including an electrical output corresponding to sounds in the body, and

a support, the support being connected to at least the first and second microphones to hold them in an array configuration,

an analysis system, the analysis system including at least;

a directional processing system coupled to receive the output from the microphone array system, and

signal processing circuitry to analyze the sounds in the body, and

wireless transmission circuitry for sending information relating to the sounds in the body.

12. The electronic scope of claim 11 wherein the scope is a wearable patch.

13. The electronic scope of claim 11 wherein the array is a planar array.

14. The electronic scope of claim 11 wherein the array is a three-dimensional array.

15. The electronic scope of claim 11 wherein the microphones are MEMS microphones.

16. The electronic scope of claim 11 wherein the microphones are piezoelectric sensors.

17. The electronic scope of claim 11 wherein the distance between at least two microphones in the array is 2 centimeters.

18. The electronic scope of claim 11 further including target selection circuity.

19. An electronic scope for receiving sounds in a body, comprising:

a microphone array structure, the array including at least;

a first microphone, the first microphone including an electrical output corresponding to sounds in the body,

a second microphone, the second microphone including an electrical output corresponding to sounds in the body, and

a support, the support being connected to at least the first and second microphones to hold them in an array configuration,

an analysis system, the system including at least;

inputs adapted to receive the at least first and second signals corresponding to body sounds, and

digital processing circuitry to filter, amplify and combine the signals to provide for electronic spatial scanning of the body.

20. The electronic scope of claim 19 wherein the analysis system de-convolves the sounds of the body.