LIVING BODY OBSERVATION SYSTEM AND METHOD OF DRIVING LIVING BODY OBSERVATION SYSTEM

• US 20090264702A1
• Filed: 04/16/2009
• Published: 10/22/2009
• Est. Priority Date: 04/22/2008
• Status: Abandoned Application

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Yoshizawa, Fukashi
• Application Number:
  US12/424,832
• Publication Number:
  US 20090264702A1
• Time in Patent Office: Days
• US Class Current: 600/117
• CPC Class Codes: A61B 1/00016 using wireless means
• CPC Class Codes: A61B 1/041 Capsule endoscopes for imaging
• CPC Class Codes: A61B 2560/0271 using a remote monitoring unit
• CPC Class Codes: A61B 5/073 Intestinal transmitters

Abstract

A living body observation system of the invention includes a living body information acquiring apparatus including: a living body information acquiring section; a wireless transmission section; a power source section for supplying driving power for driving the living body information acquiring section and the wireless transmission section; a magnetic field detecting section for outputting a detection result of a magnetic field from outside as an electric signal; and a power supply control section for controlling a supplying state of the driving power supplied from the power source section to the living body information acquiring section and the wireless transmission section based on the electric signal; and a magnetic field generating section which is disposed outside the living body information acquiring apparatus and includes a resonant circuit for generating a magnetic field by resonance and a driving circuit for supplying driving voltage for driving the resonant circuit.

Claims

1. A living body observation system comprising,

a living body information acquiring apparatus including:

a living body information acquiring section for acquiring living body information in a living body;

a wireless transmission section for wirelessly transmitting the living body information to outside of the living body;

a power source section for supplying driving power for driving the living body information acquiring section and the wireless transmission section;

a magnetic field detecting section for detecting a magnetic field from outside and outputting a detection result as an electric signal; and

a power supply control section for controlling a supplying state of the driving power supplied from the power source section to the living body information acquiring section and the wireless transmission section based on the electric signal; and

a magnetic field generating section disposed outside the living body information acquiring apparatus, the magnetic field generating section including;

a resonant circuit for generating a magnetic field by resonance; and

a driving circuit for supplying driving voltage for driving the resonant circuit.

2. The living body observation system according to claim 1, wherein the driving circuit supplies voltage of rectangular waveform having a predetermined frequency to the resonant circuit as the driving voltage.

3. The living body observation system according to claim 2, wherein a resonant frequency of the resonant circuit agrees with the predetermined frequency.

4. The living body observation system according to claim 2, wherein the magnetic field detecting section includes a circuit capable of detecting the magnetic field generated from the magnetic field generating section at a resonant frequency that agrees with the predetermined frequency.

5. The living body observation system according to claim 1, wherein the driving circuit supplies step-like voltage to the resonant circuit as the driving voltage.

6. The living body observation system according to claim 1, wherein the living body information acquiring apparatus is a capsule endoscope.

7. A method of driving the living body observation system according to claim 1, comprising switching a power source state of the living body information acquiring apparatus between on and off, every time the magnetic field is generated from the magnetic field generating section.

8. The method according to claim 7, wherein the living body information acquiring apparatus is a capsule endoscope.