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Position detection system and position detection method
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A detection system and detection part technology, which can be used in surgical navigation systems, diagnostic recording/measurement, in-vivo radio detectors, etc., and can solve the problem that capsule medical devices cannot reach the target site.
Inactive Publication Date: 2009-01-21
OLYMPUS CORP
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Abstract
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[0003] However, if the capsule medical device is not guided in the body cavity, the above-mentioned capsule medical device cannot reach the target site, and in order to guide it, it is necessary to detect where the capsule medical device is in the body cavity
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no. 1 Embodiment approach
[0089] Referring to Figure 1 to Figure 10 The position detection system according to the first embodiment of the present invention will be described.
[0090] FIG. 1 is a schematic diagram illustrating an overall configuration of a position detection system according to the present embodiment. Fig. 2 is a perspective view showing the appearance of the position detection system of Fig. 1 .
[0091] As shown in Figures 1 and 2, the position detection system 10 is a capsule-type medical device inserted into the body cavity from the mouth or anus of the subject 1. A capsule endoscope (equipment, capsule medical device) 20 for image signals and a position detection device (position analyzing unit) 50 for detecting the position of the capsule endoscope 20 are configured.
[0092] In addition, the capsule medical device is not limited to the above-mentioned capsule endoscope, and may be a capsule medical device that sprays medicine at a predetermined position in a body cavity, or ...
no. 2 Embodiment approach
[0179] Next, a second embodiment of the present invention will be described with reference to FIGS. 12 and 13 .
[0180] The basic configuration of the position detection system of this embodiment is the same as that of the first embodiment, but the configuration of the position detection device and the position detection method are different from those of the first embodiment. Therefore, in this embodiment, only the periphery of the position detection device and the position detection method will be described using FIG. 12 and FIG. 13 , and the description of the capsule endoscope and the like will be omitted.
[0181] FIG. 12 is a schematic diagram illustrating the overall configuration of the position detection system in this embodiment.
[0182] In addition, the same code|symbol is attached|subjected to the same component as 1st Embodiment, and description is abbreviate|omitted.
[0183] As shown in FIG. 12 , the position detection system 110 is mainly composed of a capsu...
no. 3 Embodiment approach
[0208] Next, a third embodiment of the present invention will be described with reference to FIGS. 14 to 16 .
[0209] The basic configuration of the position detection system of this embodiment is the same as that of the first embodiment, but the configuration of the position detection device and the position detection method are different from those of the first embodiment. Therefore, in this embodiment, only the periphery of the position detection device and the position detection method will be described using FIGS. 14 to 16 , and the description of the capsule endoscope and the like will be omitted.
[0210] FIG. 14 is a schematic diagram illustrating the overall configuration of the position detection system according to the present embodiment.
[0211] In addition, the same code|symbol is attached|subjected to the same component as 1st Embodiment, and description is abbreviate|omitted.
[0212] As shown in FIG. 14 , the position detection system 210 is mainly composed ...
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Abstract
Provided are a position detecting system and a position detecting method, in which the position measurement of a device is not deteriorated in precision even if the resonance frequency of a magnetic induction coil fluctuates. The position detecting system is characterized by comprising a device mounting the magnetic induction coil thereon, a drive coil for generating an alternating field having a position calculating frequency near the resonance frequency of the magnetic induction coil and adapted to be applied to the magnetic induction coil, a plurality of magnetic sensors for detecting the induced magnetic field generated by the magnetic induction coil in response to the alternating field, a measurement reference value calculating unit (50d) for determining a measurement reference value in the position calculating frequency on the basis of the output value of the magnetic sensor at the time when only the alternating field is applied, a position analyzing unit (50e) for calculating at least one of the position and the direction of the device on the basis of a differential measurement value or the difference between the output value of the magnetic sensor at the time when the alternating field and the induced magnetic field are applied, and the measurement reference value, and a resetting unit (50b) for resetting the position calculating frequency at a predetermined timing.
Description
technical field [0001] The present invention relates to a device equipped with a magnetic induction coil, especially a system for detecting the position of a medical device used in medical treatment, and a method for detecting the position. Background technique [0002] A medical device (in particular, a capsule-type medical device) is a swallowing type medical device that can be swallowed by a subject such as a subject and passes through a body cavity to obtain a target position as a medical device. Intra-body images. The capsule medical device is configured to include an imaging element such as a CCD (Charge Coupled Device: Charge Coupled Device) capable of performing the above-mentioned medical action, for example, to acquire an image, and acquires an image at a target site in a body cavity. [0003] However, the capsule medical device cannot reach the target site without guidance in the body cavity, and it is necessary to detect where the capsule medical device is in th...
Claims
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Application Information
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