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Electronic endoscope apparatus and electronic endoscope system

a technology of electronic endoscope and endoscope, which is applied in the field of electronic endoscope apparatus and electronic endoscope system, can solve the problems of overcurrent flow, heat generation, and increase of image signal noise,

Inactive Publication Date: 2013-01-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to an electronic endoscope system that can supply electric power to the endoscope distal end portion while preventing heat generation and maintaining the temperature there below an allowable level. The technical effect of the invention is to ensure proper functioning of the endoscope even when its type is changed, thereby reducing the likelihood of failure of the electronic circuit. Additionally, the invention compensates for voltage drops by the cable to ensure a stable input voltage to the regulators, which prevents wasteful heat generation and ensures optimal performance of the electronic endoscope.

Problems solved by technology

If the internal temperature of the endoscope insertion part rises, the noise of the image signals increases and the image quality deteriorates.
Additionally, due to a failure of a circuit in the distal end portion etc., overcurrent may flow and heat may be generated.

Method used

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  • Electronic endoscope apparatus and electronic endoscope system
  • Electronic endoscope apparatus and electronic endoscope system
  • Electronic endoscope apparatus and electronic endoscope system

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0049]FIG. 1 is a schematic configuration view showing the schematic configuration of an electronic endoscope system related to an embodiment of the present invention. As shown in FIG. 1, an endoscope system 10 of the present embodiment is constituted by an electronic endoscope 12, a processor device 14, a light source device 16, or the like. The electronic endoscope 12 has a flexible insertion part 20 to be inserted into a body cavity of a patient (subject), a manipulating part 22 continuously provided at a proximal end portion of the insertion part 20, a flexible portion 24 connected to the processor device 14 and the light source device 16.

[0050]A distal end portion 26 in which a CMOS imaging device (imaging chip) 54 (refer to FIG. 3) for imaging the inside of a body cavity, or the like is built is continuously provided at the distal end of the insertion part 20. A curvable portion 28 in which a plurality of curved pieces are coupled together is provided behind the distal end por...

second embodiment

[0093]FIG. 6 is a block diagram of main parts of a second embodiment. In FIG. 6, elements that are the same or similar to the example described in FIG. 5 are designated by the same reference numerals, and the description thereof is omitted. In addition, in order to simplify illustration in FIG. 6, the description of the oscillator 116, the LVDS buffer 134, the A / D converter 138, the memory 140, and the feedback circuit 148, which are described in FIG. 5, is omitted. This is also the same in FIGS. 7 to 9.

[0094]The second embodiment of FIG. 6 is that a thermal diode (not shown) is assembled into the CMOS imaging device 54, instead of the temperature sensor 100 (thermistor) of FIG. 5. If abnormal heat generation is detected within the imaging element module (CMOS imaging device 54) in which a temperature detecting element is assembled, the detection information is notified to the CPU 132 within the scope board 130. The CPU 132 controls the second regulator 136 to stop the output of the...

third embodiment

[0095]FIG. 7 is a block diagram of main parts of a third embodiment. In FIG. 7, elements that are the same or similar to the example described in FIGS. 5 and 6 are designated by the same reference numerals, and the description thereof is omitted.

[0096]The third embodiment shown in FIG. 7 has a configuration in which elements for detecting temperature, such as the temperature sensor 100 described in FIG. 5 or the thermal diode described in FIG. 6, are not provided. While the configuration in which the temperature detecting element is omitted is adopted, the first regulator 150 to be mounted on the endoscope distal end portion includes an overcurrent detecting circuit 152, and a shutdown circuit 154 that performs a self-shutdown when overcurrent is detected. An overcurrent protection circuit is constituted by the combination of the overcurrent detecting circuit 152 and the shutdown circuit 154. That is, an overcurrent protection circuit, which monitors the amount of current that is ou...

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PUM

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Abstract

Electric power of a required voltage is supplied to an endoscope distal end portion, and a distal end temperature is prevented from being higher. An imaging device having an imaging element, and its peripheral circuit and a first circuit part including a first regulator as a power circuit are built in the endoscope distal end portion. The first circuit part is connected to a second circuit part via a cable. The second circuit part includes a second regulator supplying electric power to the first regulator. By the overcurrent detection function of a temperature detecting unit or a regulator arranged, when at least one abnormality of a temperature abnormality and an overcurrent in the distal end portion is detected, the output of at least one of the first regulator and the second regulator is stopped, and supply of power to the distal end portion is stopped.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an electronic endoscope apparatus and an electronic endoscope system, and particularly, to a management technique when an abnormality occurs in a distal end portion of the electronic endoscope in which an imaging device having a solid-state imaging element is built.[0003]2. Description of the Related Art[0004]Electronic endoscope systems used in the medical field or the like are constituted by an electronic endoscope (scope) in which an imaging device including a solid-state imaging element is provided at a distal end portion of an insertion part to be inserted into a subject to be examined, and a processor device that controls the operation of the imaging device, and performs various kinds of signal processing on imaging signals output from the imaging device to display an endoscope image on a monitor (display device).[0005]Inside the distal end of the endoscope insertion part, temperat...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B1/05A61B1/06
CPCA61B1/00027A61B1/128A61B1/05A61B1/00009A61B1/00011A61B1/0676
Inventor MATSUMARU, YASUSHI
Owner FUJIFILM CORP
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