Systems for and methods of assessing urinary flow rate via sound analysis

• US 7,811,237 B2
• Filed: 09/08/2006
• Issued: 10/12/2010
• Est. Priority Date: 09/08/2006
• Status: Expired due to Fees

• Current Assignee: University of Vermont & State Agricultural College
• Original Assignee: University of Vermont & State Agricultural College
• Inventors: Brohan, John, Zvarova, Katarina, Zvara, Peter
• Primary Examiner(s): Hindenburg; Max
• Assistant Examiner(s): EISEMAN, ADAM JARED
• Application Number:
  US11/530,314
• Publication Number:
  US 20080082022A1
• Time in Patent Office: 1,495 Days
• Field of Search: 600/561, 600/573, 600/584, 702/104
• US Class Current: 600/584
• CPC Class Codes: A61B 2562/0204 Acoustic sensors
• CPC Class Codes: A61B 5/208 adapted to determine urine quantity, e.g. flow, volume

Abstract

Systems for and methods of assessing urinary flow rate via sound analysis. Embodiments of the uroflow measurement systems include a computer and a telephone or a digital recording mechanism to capture the sound of one or more urination events, which are stored as audio files in a database The uroflow measurement systems may include sound analysis software for analyzing the strength and duration of each urination event and may include a web-based uroflow software application for viewing the results via the Internet or other network In one embodiment, the sound analysis software performs the steps of reading in the raw data of a selected audio file, generating a plot of the audio signal amplitude vs. time, generating a plot of smoothed data for the purpose of presenting an outline of the flow, generating a main flow plot, which is a plot of the largest continuous flow that has a strength that is greater than a predetermined minimum, and generating a set of numerical values that correspond to the strength and duration of urination.

Claims

1. A method of assessing urinary flow rates, comprising:

a. providing a receptacle having a preexisting volume of water used for flushing;

b. placing a telephone near, but not coupled to, said receptacle;

c. capturing with said telephone, at a first location, the sounds of urination into said preexisting volume of water and transmitting said sounds of urination, substantially at the same time said sounds are captured, to a second location remote from said first location using said telephone and a telecommunications network to which said telephone is connected, said urination sounds having a strength and duration;

d. saving said sounds into a storage medium as an audio file; and

e. analyzing the audio file to determine strength and duration of urination.

2. A method according to claim 1, wherein said analyzing step includes generating a main flow plot of amplitude versus time for said audio file.

3. A method according to claim 2, wherein said analyzing step includes generating a set of numerical values that correspond to said strength and duration of said sounds of urination.

4. A method according to claim 3, further including comparing said numerical values from a first urination event with said numerical values from a second urination event.

5. A method according to claim 1, wherein said analyzing step includes generating a raw data plot of amplitude versus time for said audio file and selecting a portion of said raw data plot as a main flow plot.

6. A method according to claim 1, where-in said analyzing step includes determining the maximum flow, time to maximum flow, voiding time, average flow and score.

7. A method according to claim 1, wherein said sounds of urination are captured at a first location and said analyzing step is performed at a second location remote from said first location, further including transferring said sounds of urination via a website from said first location to said second location.

8. A method according to claim 1, wherein said receptacle is a toilet.

9. A method according to claim 1, further including displaying said strength and duration determined in said analyzing step in a display for a computing resource.

10. A system for assessing urinary flow using the sound of urination, the system comprising:

a. a receptacle having a preexisting volume of water;

b. a database stored on a storage medium, having stored therein an audio file including information representing the sounds of urination into said preexisting volume of water;

c. a software program installed on a computer-readable medium where said software program can be executed for analyzing said audio file to determine strength and duration of urination, said software program including;

i. a first module that generates a plot of amplitude versus time of the urination using said audio file;

ii. a second module that generates a set of numerical values that correspond to the strength and duration of the urination using said plot; and

d. a telephone positioned near, but not coupled to, said receptacle for capturing the sounds of urination into said preexisting volume of water and providing a signal representing said sounds, said telephone connected so that said signal is provided to said database.

11. A system according to claim 10, wherein said database further includes an image file containing information that represents graphically the strength and duration of the urination.

12. A system according to claim 10, wherein said first module generates a raw data plot of amplitude versus time using said audio file and a main flow plot of amplitude versus time of a portion of said raw data plot.

13. A system according to claim 10, further including said telephone for capturing sounds of urination into said preexisting volume of water and providing a digital signal representing said sounds, said telephone connected so that said digital signal is provided to said database.

14. A system according to claim 10, wherein said signal provided by said telephone has information representing said sounds, the system further including:

a digital recording device connected to said telephone for recording said information, said digital recording device also connected so that said information is provided to said database.

15. A system according to claim 10, wherein said software program provides said numerical values for at least one from the group consisting of:

maximum flow, time to maximum flow, voiding time, average flow and score.

16. A system according to claim 10, wherein said software program compares said numerical values from a first urination event to said numerical values from a second urination event.

17. A system according to claim 10, wherein said database is located at a first location, the system further including a website via which said information is provided from a second location to said first location.

18. A system according to claim 10, wherein said software program compares said numerical values from a urination event to normalized values from other urination events.