Electrogastrograph and method for analyzing data obtained by the electrogastrograph

• US 6,249,697 B1
• Filed: 06/10/1999
• Issued: 06/19/2001
• Est. Priority Date: 06/15/1998
• Status: Expired due to Fees

• Current Assignee: Nipro Corporation
• Original Assignee: Gram Corporation, Nipro Corporation
• Inventors: Asano, Fumitaka
• Primary Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US09/329,788
• Time in Patent Office: 740 Days
• Field of Search: 600/546, 600/593, 607/40
• US Class Current: 600/546
• CPC Class Codes: A61B 5/392 Detecting gastrointestinal contractions
• CPC Class Codes: A61B 5/4238 stomach

Abstract

An electrogastrograph measures an electric signal derived from the stomach'"'"'s action. The signal is decomposed into its frequency components by means of a plurality of band pass filters, and stored in a storage medium. A method for analyzing data obtained by the electrogastrograph comprises the steps of: decomposing the signal into its frequency components by means of the band pass filters; and, evaluating the stomach in its action on the basis of variations in amplitude of said frequency components.

Claims

1. In a slow wave electrogastrograph for measuring an electric signal derived from the action of the stomach of a subject, the improvement comprising:

a filter system composed of a plurality of band pass filters for decomposing the slow wave electric signal derived from the stomach'"'"'s action into frequency components of the electric signal.

2. The electrogastrograph as set forth in claim 1, further comprising:

a storage medium connected for storing the electric signal frequency components.

3. The electrogastrograph as set forth in claim 1 wherein each of said filters has a respectively different pass band.

4. The electrogastrograph as set forth in claim 3 wherein each of said filters has a pass band bandwidth of the order of 0.1 cpm.

5. The electrogastrograph as set forth in claim 3 wherein at least two of said filters have pass bands within a range between 1.6 and 6.0 cpm.

6. A slow wave electrogastrograph for measuring an electric signal derived from the action of the stomach of a subject, comprising:

a sensing device for obtaining a slow wave electric signal representative of the action of the stomach of a subject;

a filter system composed of a plurality of band pass filters connected to said sensing device for receiving the electric signal and decomposing the slow wave electric signal into frequency components of the electric signal; and

an output device coupled to said filters for providing an output representing a parameter of the frequency components.

7. The electrogastrograph as set forth in claim 6 wherein each of said filters has a respectively different pass band.

8. The electrogastrograph as set forth in claim 7 wherein each of said filters has a pass band bandwidth of the order of 0.1 cpm.

9. The electrogastrograph as set forth in claim 7 wherein at least two of said filters have pass bands within a range between 1.6 and 6.0 cpm.

10. A method for analyzing data obtained by an electrogastrograph, comprising the steps of:

decomposing a slow wave electric signal derived from the action of the stomach of a subject into its frequency components by means of a plurality of band pass filters; and

,

evaluating the action of the stomach on the basis of variations in amplitude of the frequency components.

11. The method as set forth in claim 10 wherein each of the filters has a respectively different pass band.

12. The method as set forth in claim 11 wherein each of the filters has a pass band bandwidth of the order of 0.1 cpm.

13. The method as set forth in claim 11 wherein at least two of the filters have pass bands within a range between 1.6 and 6.0 cpm.