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Endoscope shape detecting apparatus

A detection device and endoscope technology, which can be used in telescopes, diagnostic recording/measurement, medical science, etc., and can solve problems such as spending a lot of time

Active Publication Date: 2007-10-17
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, in the second conventional example, although the detection of the shape of the endoscope can be performed with high precision, it has the disadvantage that it takes a lot of effort.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 5 .

[0025] As shown in FIG. 1 , an endoscope system 1 has: an endoscope device 2 that performs endoscopic inspection; and an endoscope shape detection device 3 of Embodiment 1 that is used to assist endoscopic inspection, This endoscope shape detection device 3 is used as an insertion assisting means when inserting an insertion portion 7 of an electronic endoscope 6 into a body cavity of a patient 5 lying on a bed 4 for endoscopic inspection.

[0026] The electronic endoscope 6 is provided with an operation part 8 provided with a bending operation knob at the rear end of the flexible and elongated insertion part 7, and a universal cord 9 is extended from the operation part 8. Connect with video processor (or video imaging system) 10.

[0027] This electronic endoscope 6 is inserted with a light guide that transmits the illumination light from the light source unit in the video proces...

Embodiment 2

[0083] Next, Embodiment 2 of the present invention will be described with reference to FIG. 6 and FIG. 7 . FIG. 6 shows the configuration of an endoscope shape detection device 3B according to the second embodiment.

[0084] The endoscope shape detection device 3B detects the position of the source coil 14i with high accuracy by using synchronous detection.

[0085] The endoscope shape detection device 3B shown in FIG. 6 has a drive block 26B, a detection block 27B, a main processor 28B, and a liquid crystal monitor 25 .

[0086] The drive block 26B of this embodiment is constituted as follows: in the drive block 26 shown in FIG. The signal passes through a multiplexer (multiplexer) 61 to sequentially drive, for example, 16 source coils 14i, that is, to drive by time division. According to a switching control signal from the control circuit 37, the multiplexers 61 are sequentially switched at a predetermined cycle.

[0087] In addition, the detection block 27B of this embod...

Embodiment 3

[0111] Next, Embodiment 3 of the present invention will be described with reference to FIG. 8 . FIG. 8 shows the configurations of the drive block 26B, the detection block 27, and the main processor 28C of the endoscope shape detection device 3C according to the third embodiment.

[0112] This endoscope shape detection device 3C detects the position of the source coil 14i with high accuracy by using synchronous detection as in the second embodiment.

[0113] In this embodiment, the function of the synchronous detection circuit 62j in the second embodiment is realized by the main processor 28C.

[0114] The endoscope shape detection device 3C shown in FIG. 8 has a drive block 26B, a detection block 27 , a main processor 28C, and a liquid crystal monitor 25 .

[0115] In this embodiment, the function of the synchronous detection circuit 62j in the second embodiment is realized by software in the main processor 28C.

[0116] Other structures are the same as in Embodiment 2.

...

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Abstract

A drive block includes a plurality of magnetic field generating elements and a drive signal generating part that supplies drive signals to the plurality of magnetic field generating elements to generate magnetic fields. The magnetic fields generated by the plurality of magnetic field generating elements are detected by a plurality of magnetic field detecting elements constituting a detecting block. A shape calculating block calculates, from the frequency components, which correspond to the frequency of the drive signals, in the detection signals generated by the plurality of magnetic field detecting elements, the positions of the plurality of magnetic field generating elements or the plurality of magnetic field detecting elements disposed in an insertion part where an endoscope is inserted, thereby calculating the shape of the insertion part. The oscillation frequency of a reference clock, which decides the frequency of the drive signals, can be changed and established by a frequency establishing part. The reference clock of the oscillation frequency established by the frequency establishing part is supplied not only to the drive block but also to the shape calculating block.

Description

technical field [0001] The present invention relates to an endoscope shape detection device which detects and displays the insertion shape and the like of an endoscope inserted into a body cavity or the like. Background technique [0002] In recent years, an endoscope shape detecting device is being used which detects the shape etc. of an endoscope inserted into a body etc. using a magnetic field generating element and a magnetic field detecting element and displays it with a display unit. [0003] For example, Japanese Patent Application Laid-Open No. 8-107875 as a first conventional example discloses a device that detects the shape of an endoscope using a magnetic field and displays the detected shape of the endoscope. [0004] This device drives a plurality of magnetic field generating elements arranged at predetermined intervals in the insertion portion of an endoscope inserted into the body to generate a magnetic field around them, and detects the three-dimensional posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/00G02B23/24
CPCA61B5/06G02B23/2476A61B5/7257A61B5/064A61B1/009
Inventor 三好义孝相沢千惠子三宅宪辅小野田文幸佐藤稔丹羽宽织田朋彦
Owner OLYMPUS CORP
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