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Capsule endoscope apparatus

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Title: Capsule endoscope apparatus.
Abstract: A signal processing circuit of an external device includes a CPU and a memory which are not shown. A program for estimating at least one of the position and orientation of a capsule endoscope on the basis of strength signals received through respective antennas is installed in the signal processing circuit. A single-core coil to generate a magnetic field is arranged in the capsule endoscope. The generated magnetic field is detected by a plurality of coils arranged outside a body, whereby a distance that the capsule endoscope has traveled can be obtained with accuracy. This arrangement controls image-capture timing to reliably capture images necessary for a diagnosis and prevent unnecessary image capture. ...


Browse recent Olympus Corporation patents - Tokyo, JP
Inventors: Jun Hasegawa, Hirokazu Nishimura, Hideki Tanaka, Ryoko Inoue
USPTO Applicaton #: #20110282146 - Class: 600109 (USPTO) - 11/17/11 - Class 600 
Surgery > Endoscope >With Camera Or Solid State Imager

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The Patent Description & Claims data below is from USPTO Patent Application 20110282146, Capsule endoscope apparatus.

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CROSS REFERENCE TO RELATED APPLICATION

This application is a divisional application of U.S. application Ser. No. 11/485,563 filed on Jul. 12, 2006, which is a continuation application of PCT/JP2005/000342 filed on Jan. 14, 2005 and claims benefit of Japanese Application No. 2004-007379 filed in Japan on Jan. 14, 2004, the entire contents of each of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a capsule endoscope apparatus comprising an ingestible capsule unit and an extracorporeal unit for receiving biological information transmitted from the capsule unit.

2. Description of the Related Art

In recent years, capsule endoscope apparatuses for conducting an examination and the like in a body cavity with an ingested capsule type unit have been proposed.

For example, Japanese Unexamined Patent Application Publication No. 7-111985 discloses an apparatus including a spherical capsule divided in two having communication means for transmitting biological information to an extracorporeal device.

PCT Publication No. WO 01/87377 A2 discloses a capsule endoscope apparatus for detecting the motion (rate) of a capsule unit through an acceleration sensor or the like disposed in the capsule unit to control a capture rate or a display rate on the basis of a detected value.

SUMMARY

OF THE INVENTION

The present invention provides a capsule endoscope apparatus including an image capturing unit for capturing an image in a body to transmit the image by radio and a receiving unit for receiving the image transmitted by radio from the image capturing unit to record the image, the apparatus further including: an estimating unit for receiving a signal transmitted by radio from the image capturing unit through each of a plurality of antennas arranged at different positions outside the body to estimate at least one of the position and orientation of the image capturing unit on the basis of the signals received through the antennas; and a control unit for controlling image capture by the image capturing unit using information regarding at least one of the position and orientation estimated by the estimating unit.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A and FIG. 1B include explanatory diagrams showing the structure of a capsule endoscope apparatus according to a first embodiment of the present invention and that of an extracorporeal device, such as an extracorporeal terminal, FIG. 1A being the explanatory diagram showing the capsule endoscope apparatus, FIG. 1B being the explanatory diagram showing the structure of the extracorporeal device, such as an extracorporeal terminal.

FIG. 2 is an explanatory diagram showing the internal structure of a capsule endoscope shown in FIG. 1A.

FIG. 3 is an explanatory diagram showing single-core coils serving as antennas of an antenna unit in FIG. 1A.

FIG. 4 is an explanatory diagram showing the structure of a signal transmitting and receiving function for an antenna of the capsule endoscope of FIG. 2 and that for the antennas of the antenna unit in FIG. 1.

FIG. 5 is a diagram explaining signals transmitted from the antenna of the capsule endoscope of FIG. 2.

FIG. 6 is a first diagram explaining a process by a signal processing circuit in FIG. 4.

FIG. 7 is a second diagram explaining the process by the signal processing circuit in FIG. 4.

FIG. 8 is a diagram explaining a process by a signal processing circuit according to a second embodiment of the present invention.

FIG. 9 is a diagram explaining a process by a signal processing circuit according to a third embodiment of the present invention.

FIG. 10 is a block diagram showing the structure of an image capturing circuit of a capsule endoscope according to a fourth embodiment of the present invention.

FIG. 11 is a flowchart showing the flow of a process executed by a signal processing circuit in an external device according to a sixth embodiment of the present invention.



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stats Patent Info
Application #
US 20110282146 A1
Publish Date
11/17/2011
Document #
13192506
File Date
07/28/2011
USPTO Class
600109
Other USPTO Classes
International Class
61B1/04
Drawings
14


Images
Magnetic Field
Orientation
Prevent
Signal Processing
Signals


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