DEVICE, COMPUTING DEVICE AND METHOD FOR DETECTING FISTULA STENOSIS

• US 20150366530A1
• Filed: 06/24/2014
• Published: 12/24/2015
• Est. Priority Date: 06/24/2014
• Status: Abandoned Application

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: KU, Po-Wen
• Application Number:
  US14/312,916
• Publication Number:
  US 20150366530A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/02 Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/327 Generation of artificial ECG signals based on measured signals, e.g. to compensate for missing leads
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 7/04 Electric stethoscopes microphones, acoustic transducers therefor H04R
• CPC Class Codes: A61M 1/3658 Indicating the amount of purified blood recirculating in the fistula or shunt
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2210/12 Blood circulatory system
• CPC Class Codes: A61M 2230/04 Heartbeat characteristics, e.g. ECG, blood pressure modulation

Abstract

A device for detecting fistula stenosis is provided. The device includes a physiological signal sensor, an acoustic receiver and a processing circuit. The physiological signal sensor is configured for providing a physiological signal of a user. The acoustic receiver is configured for detecting a sound from a fistula of the user to generate a sound signal. The processing circuit is configured for providing a degree of fistula stenosis according to the physiological signal of the user and the sound signal.

Claims

1. A device for detecting fistula stenosis, comprising:

a physiological signal sensor, configured for providing a physiological signal of a user;

an acoustic receiver, configured for detecting a sound from a fistula of the user to generate a sound signal; and

a processing circuit, configured for providing a degree of fistula stenosis according to the physiological signal of the user and the sound signal.

2. The device as claimed in claim 1, wherein the processing circuit comprises:

an information generator, deriving a physiological information according to the physiological signal;

a signal separator, distinguishing a first portion of the sound signal from a second portion of the sound signal according to the physiological information; and

a signal analyzer, analyzing at least one of the first portion of the sound signal and the second portion of the sound signal to derive the degree of fistula stenosis.

3. The device as claimed in claim 2, wherein the first portion of the sound signal corresponds to diastolic phases of cardiac cycles of the user and the second portion of the sound signal corresponds to systolic phases of cardiac cycles of the user.

4. The device as claimed in claim 2, wherein the first portion of the sound signal corresponds to an arrhythmia duration of the user and the second portion of the sound signal corresponds to a non-arrhythmia duration of the user.

5. The device as claimed in claim 1, wherein the physiological signal is an electrocardiogram (ECG) lead signal, and the physiological signal sensor comprises:

a first electrode, configured for detecting a first skin voltage from the user;

a second electrode, configured for detecting a second skin voltage from the user; and

an ECG lead signal generator coupled to the first electrode and the second electrode, configured for providing the ECG lead signal according to the first skin voltage and the second skin voltage.

6. The device as claimed in claim 5, wherein the first skin voltage and the sound from the fistula of the user are both provided from one arm of the user and the second skin voltage is provided from the other arm of the user.

7. A computing device for detecting fistula stenosis, comprising:

a processing circuit, comprising;

a processor, configured for providing a degree of fistula stenosis according to a physiological signal and a sound signal.

8. The computing device as claimed in claim 7, wherein the processor executes instructions for:

deriving a physiological information according to the physiological signal;

distinguishing a first portion of the sound signal from a second portion of the sound signal according to the physiological information; and

analyzing at least one of the first portion of the sound signal and the second portion of the sound signal to derive the degree of fistula stenosis.

9. The computing device as claimed in claim 8, wherein the first portion of the sound signal corresponds to diastolic phases of cardiac cycles of a user and the second portion of the sound signal corresponds to systolic phases of cardiac cycles of the user.

10. The computing device as claimed in claim 9, wherein the second portion of the sound signal is analyzed to derive the degree of fistula stenosis.

11. The computing device as claimed in claim 8, wherein the first portion of the sound signal corresponds to an arrhythmia duration of a user and the second portion of the sound signal corresponds to a non-arrhythmia duration of the user.

12. The computing device as claimed in claim 11, wherein the second portion of the sound signal is analyzed to derive the degree of fistula stenosis.

13. The computing device as claimed in claim 7, further comprising:

an output unit, configured for generating one of an audio signal and a visual signal according to the degree of fistula stenosis.

14. The computing device as claimed in claim 7, further comprising:

an acoustic receiver, configured for detecting a sound from a fistula of a user to generate the sound signal.

15. The computing device as claimed in claim 14, further comprising:

a physiological signal sensor, configured for providing the physiological signal from the user.

16. The computing device as claimed in claim 15, wherein the physiological signal is an electrocardiogram (ECG) lead signal, and the physiological signal sensor comprises:

a first electrode, configured for detecting a first skin voltage from the user;

a second electrode, configured for detecting a second skin voltage from the user; and

an ECG lead signal generator coupled to the first electrode and the second electrode, configured for providing the ECG lead signal according to the first skin voltage and the second skin voltage.

17. The computing device as claimed in claim 16, wherein the first skin voltage and the sound from the fistula of the user are both provided from one arm of the user and the second skin voltage is provided from the other arm of the user.

18. A method for detecting fistula stenosis, comprising:

at a computing device,

receiving a physiological signal of a user, wherein the physiological signal is provided by a physiological signal sensor;

receiving a sound signal generated by an acoustic receiver detecting a sound from a fistula of the user; and

providing a degree of fistula stenosis according to the physiological signal of the user and the sound signal.

19. The method as claimed in claim 18, wherein providing the degree of fistula stenosis comprises:

deriving a physiological information according to the physiological signal;

distinguishing a first portion of the sound signal from a second portion of the sound signal according to the physiological information; and

analyzing at least one of the first portion of the sound signal and the second portion of the sound signal to derive the degree of fistula stenosis.

20. The method as claimed in claim 19, wherein the first portion of the sound signal corresponds to diastolic phases of cardiac cycles of the user and the second portion of the sound signal corresponds to systolic phases of cardiac cycles of the user.

21. The method as claimed in claim 19, wherein the first portion of the sound signal corresponds to an arrhythmia duration of the user and the second portion of the sound signal corresponds to a non-arrhythmia duration of the user.

22. The method as claimed in claim 19, wherein the physiological signal is an electrocardiogram (ECG) lead signal, and the physiological signal sensor comprises:

a first electrode, configured for detecting a first skin voltage from the user;

a second electrode, configured for detecting a second skin voltage from the user; and

an ECG lead signal generator coupled to the first electrode and the second electrode, configured for providing the ECG lead signal according to the first skin voltage and the second skin voltage.

23. The method as claimed in claim 22, wherein the first skin voltage and the sound are both provided from one arm of the user and the second skin voltage is provided from the other arm of the user.

24. A computer readable storage medium having stored therein instructions, which when executed by a device, cause the device to:

provide a degree of fistula stenosis according to a physiological signal of a user and a sound signal.

25. The computer readable storage medium as claimed in claim 24, wherein providing the degree of fistula stenosis comprises:

deriving a physiological information according to the physiological signal of the user;

distinguishing a first portion of the sound signal from a second portion of the sound signal according to the physiological information; and

analyzing at least one of the first portion of the sound signal and the second portion of the sound signal to derive the degree of fistula stenosis.

26. The computer readable storage medium as claimed in claim 25, wherein the first portion of the sound signal corresponds to diastolic phases of cardiac cycles of the user and the second portion of the sound signal corresponds to systolic phases of cardiac cycles of the user.