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Endoscope shape detection device

A detection device, endoscope technology, applied in the direction of surgery, etc., can solve the actual inspection obstacles, the position and insertion shape of the front end of the endoscope shape detection device cannot be obtained, etc.

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

Therefore, when the disconnection or short circuit of the source coil is detected to determine that the endoscope shape detection device cannot be used, information such as the position and insertion shape of the tip of the insertion part of the endoscope shape detection device cannot be obtained, and the insertion target The operation of the site can only rely on the experience of the surgeon, so effective insertion into the target site cannot be expected, and there is a possibility that it will cause obstacles to the actual examination

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] FIGS. 1 to 17 relate to Embodiment 1 of the present invention. FIG. 1 is a configuration diagram showing the structure of an endoscope system, and FIG. 2 is a diagram showing an example of the arrangement of coils built in the coil unit of FIG. 3 is a structural diagram showing the structure of the endoscope shape detection device of FIG. 1, FIG. 4 is a diagram showing the structure of the receiving block and the control block of FIG. 3, and FIG. 5 is a detailed structure of the receiving block of FIG. Fig. 6 is a timing chart showing the operation of the two-port memory of Fig. 4, Fig. 7 is a diagram showing the structure of the electronic endoscope of Fig. 1, and Fig. 8 is a diagram showing the two-port memory of Fig. 4 Fig. 9 is a diagram showing the structure of the source coil drive circuit section of Fig. 4, Fig. 10 is a flowchart explaining the operation of the endoscope system of Fig. 3, and Fig. 11 is a diagram showing the configuration of the endoscope system of F...

Embodiment 2

[0108] 18 to 20 relate to Embodiment 2 of the present invention. FIG. 18 is a diagram showing the structure of the source coil drive circuit of the endoscope shape detection device. FIG. 19 is a diagram showing the memory map of the two-port memory. 20 is a flowchart explaining the function of the endoscope system.

[0109] Since the second embodiment is almost the same as the first embodiment, only the different points will be described, and the same reference numerals will be attached to the same structure, and the description will be omitted.

[0110] In this embodiment, as shown in FIG. 18, the source coil drive circuit section 31 of the endoscope shape detection device 3 is configured to have a plurality of source coils 14i: an oscillator 110, an amplifier 111, and a measurement flow into the source coil 14i. The current detecting unit 114 for the alternating current inside, the voltage detecting unit 115 for measuring the alternating voltage applied to the source coil 14i, a...

Embodiment 3

[0124] Figures 21 to 25 relate to Embodiment 3 of the present invention. Figure 21 is a diagram showing the configuration of the source coil drive circuit section of the endoscope shape detection device, and Figure 22 is a flowchart illustrating the function of the endoscope system 23 is an explanatory diagram for explaining the processing of FIG. 22, FIG. 24 is a diagram showing a configuration of a modification of the source coil drive circuit section of FIG. 21, and FIG. 25 is an effect on the source coil drive circuit section of FIG. 24 An explanatory diagram for explanation.

[0125] Since the third embodiment is almost the same as the second embodiment, only the different points will be described, and the same reference numerals will be attached to the same structure, and the description will be omitted.

[0126] In this embodiment, as shown in FIG. 21, the CPU 32 is configured to control the output voltage value of the oscillator 110 based on the impedance Z of the source c...

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Abstract

The source coil drive circuit section (31) of an endoscope profile detector (3) comprises an oscillator (110) generating a sine wave, and an amplifier (111) for amplifying the sine wave and generating (driving) an AC field in a source coil (14i) through a switch section (112). The switch section (112) can supply a DC current to the source coil (14i) while switching to the output of the amplifier (111). The source coil drive circuit section (31) is provided with a DC resistance detecting section (113) for measuring the DC resistance of the source coil (14i) from a potential drop when the switch section (112) is supplying a DC current to the source coil (14i).

Description

Technical field [0001] The present invention relates to an endoscope shape detection device that uses a magnetic field generation element and a magnetic field detection element to detect and display the insertion shape of an endoscope and the like. Background technique [0002] In recent years, an endoscope shape detection device has been adopted that uses a magnetic field generating element and a magnetic field detection element to detect the shape of an endoscope inserted into the body or the like, and displays it using a display unit. [0003] For example, Japanese Patent Application Laid-Open No. 2003-245243 and the like disclose an apparatus that uses a magnetic field to detect the shape of an endoscope and display the detected shape of the endoscope. 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 magnetic fields around them. Then, the magneti...

Claims

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Application Information

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IPC IPC(8): A61B1/00
Inventor 小野田文幸丹羽宽织田朋彦佐藤稔三宅宪辅三好义孝辻和孝相沢千惠子
Owner OLYMPUS CORP
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