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Capsule medical apparatus and body-cavity observation method

a medical device and capsule technology, applied in the field of capsule medical devices, can solve the problems of inability to maintain the proper size of the capsule endoscope to be introduced into a subject, and the structure becomes more complex and enlarged

Inactive Publication Date: 2008-08-07
OLYMPUS MEDICAL SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]A capsule medical apparatus according to one aspect of the present invention includes a capsule body to be introduced into a lumen of a subject; a control member controlling a movement of the capsule body in the lumen by a flow of

Problems solved by technology

Thus, the structure becomes more complex and enlarged so that the proper size of the capsule endoscope to be introduced into a subject cannot be maintained.

Method used

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  • Capsule medical apparatus and body-cavity observation method
  • Capsule medical apparatus and body-cavity observation method
  • Capsule medical apparatus and body-cavity observation method

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Experimental program
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first embodiment

[0030]Further, the rotary guide member 40 is configured to work as a control member for controlling movement of the capsule body 20 in the lumen 2, which is moved by the flow of the fluid 3 introduced into the lumen 2. the rotary guide member 40 is configured to rotate the capsule body 20 with the flow of the fluid 3 about the longitudinal axis of the capsule body 20 in a circumferential direction. The rotary guide member 40 is composed of a spiral member formed of a continuous projection 41 with projection amount which is capable of interfering the flow of the fluid 3, spirally formed around the outer surface of the capsule body 20. The cross-sectional shape of the projection 41 may be formed in a hemicycle or a rectangle shape. Further, the interval of the spiral, the number of the spiral, the angle of the spiral or the like of the projection 41 can be set arbitrarily.

[0031]An image processing unit which is installed in the capsule body 20, which is not shown, provides necessary ...

second embodiment

[0041]Further, the observing member 70 is an imaging member for imaging an image of the inside of the lumen and, is composed of an imaging member 71 that is fixed at a position one-sided with respect to the longitudinal axial direction in the capsule body 60. The imaging member 71, which is not shown, includes a light source for illuminating an imaging region, a solid-state imaging device such as CCD or CMOS imager for receiving catoptric light from the imaging region generated by the illuminating light of the light source to image the inside of the lumen, and an imaging optical system such as an imaging lens for producing an optical image of the imaging region to the solid-state imaging device. As shown with dashed lines in FIGS. 7A to 7C, the imaging member 71 is disposed so as to provide an imaging field in the longitudinal axial direction of the capsule body 60. Here, the capsule body 60 includes a member having clearness or translucency at least at regions corresponding to the...

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Abstract

Provided is a capsule medical apparatus including a capsule body, a control member, and an observing member. The capsule body is to be introduced into a lumen of a subject. The control member controls a movement of the capsule body in the lumen by a flow of a fluid introduced in the lumen. The observing member is fixed inside the capsule body and observes a direction of the flow of the fluid and a direction different from the flow of the fluid according to the movement of the capsule body.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a capsule medical apparatus such as a capsule endoscope for traveling in a lumen with a liquid such as water, which is introduced into a subject, to observe inside the lumen and a body-cavity observation method.[0003]2. Description of the Related Art[0004]Recently, in a field of endoscopes, a capsule endoscope having an imaging function and a radio communication function has been appearing. This capsule endoscope includes a structure for displacing along with peristaltic movement in an internal organ (in a lumen) such as the esophagus, stomach and small intestine and sequentially taking images with its imaging function until it is naturally discharged from the body of the subject, after swallowed by the subject through his or her mouth for the observation (examination).[0005]WO 02 / 95351 discloses a technique suited for observing the large intestine, in which the specific gravity of the c...

Claims

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Application Information

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IPC IPC(8): A61B1/00
CPCA61B1/00156A61B1/00177A61B1/045A61B1/00181A61B1/041A61B1/00179
Inventor SEGAWA, HIDETAKETAKIZAWA, HIRONOBU
Owner OLYMPUS MEDICAL SYST CORP
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