JP2005198844A - Connector device for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize electric effects on the cameras for the endoscopes, the electronic endoscopes or the vidio processors even when contact points on the contact point surface of the plug are short-circuited. <P>SOLUTION: Electric contact points of the power source with the voltage of positive 12V, the power source with the voltage of positive 13V, the power source with the voltage of positive 15V and the power source with the voltage of positive 5V are adjacent to each other. Even when the insufficient dryness causes the power source with the voltage of positive 12V, the power source with the voltage of positive 13V, the power source with the voltage of positive 15V and the power source with the voltage of positive 5V adjacent to each other to be short-circuited, as the voltages of the power sources are all positive, no large current flows, thereby preventing possible damages to the cameras for the endoscopes or the electronic endoscopes and the video processors. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is an endoscopic electronic endoscope provided with an imaging element mounted in the endoscopic image in the eyepiece section to the endoscopic imaging apparatus or distal end of the endoscope is provided an imaging device for imaging the The present invention relates to an endoscope connector device for connecting a plug provided to a receptacle to transmit information from the above-described image sensor to a video processor.

  Contact portion and the body portion of the plug endoscope connector device of a so-called card edge type prismatic has been proposed in JP-A 6-251828 Patent Publication.

In addition, since the endoscope connector device disclosed in Japanese Patent Laid-Open No. 6-251828 has irregularities formed in the region of the contact surface of the plug, the contact surface of the plug is cleaned and disinfected by the presence of the irregular portion on the contact surface. -Not only is it difficult to sterilize, but also there is a problem that water and chemicals easily accumulate on the uneven parts of the contact surface due to cleaning, disinfection and sterilization, and it takes a lot of time and labor to dry the contact surface sufficiently. Attention has been paid to an endoscope connector device in which the contact surface of the plug is substantially flat, as disclosed in JP-A-2002-216902.
JP-A-6-251828 JP 2002-216902 A

  However, the endoscope connector device of JP 2002-216902 proposed, although the excellent washability and drainage of the contact surface of the plug, have a still time to be reliably dry the contact surfaces of the plug and, between the contacts has a problem it is difficult to reliably prevent shorting electrically in contact surfaces of the plug.

  The present invention has been made in view of the above circumstances, even if the contacts are electrically shorted by the contact surface of the plug, electrical to endoscopic imaging apparatus or an electronic endoscope, a video processor and its object is to provide an endoscope connector device the Do influence can be suppressed to a minimum.

  The endoscope connector device of the present invention, the imaging element to the imaging device or the distal end of the endoscope for the endoscope is provided an imaging device for imaging an attached within endoscopic image to the eyepiece section of the endoscope an endoscope connector for transmitting the electronic endoscope card edge shaped connecting projection provided on which is provided to connect the plug to the receptacle having a proximal end, the information from the imaging element described above the video processor in the device, the connecting spigot is made of an insulating member having a substantially box-shape, and the contact surfaces of the upper and lower surfaces and substantially planar configured, insulated in the respective contact surfaces of the upper and lower surfaces, said inner from said video processor wherein the plurality of electrical contacts for signal transmission and reception between the viewing mirror imaging device or a plurality of types of power supply and the video processor and the endoscope imaging apparatus or the electronic endoscope to the electronic endoscope It has the power Supply of electrical contacts are configured are disposed at least adjacent the electrical contacts of the other power supply at the same potential.

  According to the present invention, the inter-contact be electrically shorted, to suppress the electrical influence on the endoscopic image pickup apparatus or an electronic endoscope, a video processor to a minimum at contact surface of the plug there is an effect that it is.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 8 relates to Example 1 of the present invention, configuration diagram showing a configuration of FIG. 1 is an endoscope apparatus, Fig. 2 is a block diagram showing a configuration of the endoscope imaging camera apparatus of FIG. 1, FIG. 3 is a block diagram showing the configuration of the electronic endoscope of FIG. 1, FIG. 4 is a block diagram showing the configuration of the video processor of FIG. 1, and FIG. 5 is a diagram showing the configuration of the first isolation circuit of FIG. 6 FIG, 7 arrow view of the endoscope connector device viewed from arrow a of FIG. 1 showing the configuration of a modified example of the first isolation circuit of FIG. 4, FIG. 8 is the electrical contact of FIG. 7 it is an explanatory view of the assignment.

  As shown in FIG. 1, the endoscope connector device 1 of this embodiment is connected to a video processor 3 that processes an endoscope imaging signal and displays an endoscope image on a TV monitor 2. provided at the tip portion of the cable 6 extending from the endoscope imaging camera device 5 is attached to the eyepiece section of the endoscope 4 or an endoscope (not shown).

  Endoscopic imaging camera device 5, as shown in FIG. 2, a color separation prism 11 for color separation of the endoscopic image in RGB, capturing an endoscopic image of R band is color-separated by the color separation prism 11 and R-CCD 12, the G-CCD 13 for imaging an endoscopic image of the G band is color-separated by the color separation prism 11, a color separation prism 11 and the B-CCD 14 for imaging an endoscopic image of the color separated B band , and R-CDS15 to correlated double sampling photoelectric conversion signals from the R-CCD 12, the G-CDS 16 to correlated double sampling photoelectric conversion signals from the G-CCD 12, correlating the photoelectric conversion signal from the B-CCD 12 two and B-CDS17 to heavy sampling, the R-CCD12, G-CCD13, drive signals for driving the B-CCD 14 and R-CDS15, G-CDS16, B-CDS1 Timing generator 18 for generating a sampling signal, etc., an identification resistor 19 for discriminating the type of the imaging camera device 5 for endoscope, and various functions provided on the outer peripheral surface of the main body of the imaging camera device 5 for endoscope for example instructs the embodiment configured with a switch unit 20 or the like comprising four switches SW1 to SW4.

  Then, R-CDS15, G-CDS16, R-CDS signal from B-CDS17, G-CDS signal, B-CDS signal, horizontal / vertical synchronizing signal and the internal control signal to the timing generator 18 (HD, VD, SCK , SDAT, SEN, GCLK), and identification resistor 19, that the contact output of the switch SW1~SW4 connects the endoscope connector device 1 of the endoscope imaging camera device 5 to the video processor 3, the endoscope It has to be exchanged between use imaging camera device 5 and video processor 3.

  Electronic endoscope 4, as shown in FIG. 3, the CCD31 provided in the insertion portion distal end having a color separation filter for separating color components of endoscope image (not shown) on the imaging surface, the photoelectric from CCD31 an amplifier 32 for amplifying and outputting the converted signal, a timing generator 33 for generating a sampling signal and the like for correlated double sampling of the signal driving signal and CCD 31 is through an amplifier 32 which is captured for driving the CCD 31, an electronic the identification resistor 34 for causing the determining the type of the endoscope 45, the switch unit 35 or the like made of the electronic endoscope 45 of the operation section instructs, for example, four switches SW1~SW4 the implementation of various functions provided on the outer peripheral surface It is comprised with.

  Then, CCD signal is the output signal of the amplifier 32, horizontal / vertical synchronizing signal and the internal control signal to the timing generator 33 (HD, VD, SCK, SDAT, SEN, GCLK), the sampling signal from the timing generator 33 (SHP, SHD, XRS) and the identification resistor 34, and the contact outputs of the switches SW1 to SW4 connect the endoscope connector device 1 of the electronic endoscope 4 to the video processor 3, so that the electronic endoscope 4 and the video processor 3 are connected. in it has to be able to send and receive.

  Video processor 3, as shown in FIG. 4 consists of a patient circuit 41 secondary circuit 42, the patient circuit 41 and secondary circuit 42 is electrically isolation (insulation).

  The R-CDS signal, the G-CDS signal, and the B-CDS signal from the endoscope imaging camera device 5 are respectively 12 by a 3-channel A / D converter (3chA / D) 43 provided in the patient circuit 41. is converted into a bit of the digital signal, is converted into a serial signal by the parallel / serial converter (P / S conversion) 44, is output to the secondary circuit 42 through the first isolation circuit 101 there.

  The serial signal transmitted to the secondary circuit 42 via the first isolation circuit 101 is converted into a 12-bit parallel signal of RGB 3 channels by the serial / parallel converter (S / P conversion) 45, and the switching circuit 46. Is input to the contour emphasizing circuit 47.

  RGB signal edge enhancement processing has been performed by the contour enhancement circuit 47, white balance white balance circuit (W / B) 48 is applied, after which the color correction is made in the color correction circuit 49, in gamma correction circuit 50 gamma It is corrected and stored in the frame memory 51.

  RGB signal stored in the frame memory 51 is output to the TV monitor 2 via the encoder 52, and displays the the endoscope image by the TV monitor 2 is also output to the compression circuit 53. In the compression circuit 53, to generate a compressed image such as an endoscopic image from the example MPEG, and is capable to record the compressed image in the external memory (not shown) via the external memory control circuit 54.

  CCD signal from the electronic endoscope 4, the sampling signal from the timing generator 33 in CDS61 provided in the patient circuit 41 (SHP, SHD, XRS) correlated double sampling by, A / D converter (A / after being digitized in D) 62, is converted parallel / serial converter (in the P / S converter) 63 into a serial signal, as output to the secondary circuit 42 via the second isolation circuit 102 going on.

  Serial signal transmitted to the secondary circuit 42 via the second isolation circuit 102 is converted into parallel signals by a serial / parallel converter (S / P conversion) 64, a color separation circuit 65 and RGB matrix circuit 66 after being converted into an RGB signal through, it is outputted to the switching circuit 46. The description after the switching circuit 46 is omitted because it has been described above.

  The RGB signal output from the contour enhancement circuit 47 is detected by the detection circuit 67 and the detection result is output to the shutter control circuit 68. In the shutter control circuit 68, a shutter control signal for controlling the electronic shutter of the CCD of the electronic endoscope 4 or the imaging camera device 5 for endoscope is transmitted to the patient circuit 41 side through the third isolation circuit 103.

  The secondary circuit 42 is provided with an oscillator 69, and the synchronization signal generator 70 outputs various timing signals to each circuit on the secondary circuit 42 side based on a pulse oscillated by the oscillator 69. The timing signal from the synchronization signal generator 70 is adapted to be transmitted to the patient circuit 41 side via the fourth isolation circuit 104. Pulse oscillator 69 oscillates is also adapted to be transmitted to the patient circuit 41 side via the fifth isolation circuit 105.

  Further CPU 71 is provided in the secondary circuit 42, CPU 71 may implement control of each circuit of the sixth isolation circuit 106 based on a signal from the switch SW1~SW4 inputted through the control and secondary circuit 42 side Various control signals are generated and output.

  Incidentally, the isolation circuit 102-106 of the second to sixth example photocoupler is composed of a (not shown), the first isolation circuit 101 is known as described below LVDS (Low Voltage Differential Signal transmission is performed according to a standard defined in (Signal Transmission System).

  Pulse from the fifth isolation circuit 105 oscillator 69 is transmitted to the patient circuit 41 through a is input to the frequency divider 72 and the timing controller (T.C.) 73, T. In frequency divider 72 And outputs to the control frequency in the divided endoscopic imaging camera device 5 through the endoscope connector device 1 as GCLK (or electronic endoscope 4) by C73.

  The identification resistor 19 (or identification resistor 34) from the endoscope connector apparatus 1 is connected to the pulled-up voltage dividing resistor 74. In the scope detection circuit 75, the voltage dividing resistor 74 and the identification resistor 19 (or identification resistor 19) are connected. 34), the scope detection circuit 75 takes in the endoscope imaging camera device 5 through the A / D converter 76 based on the timing signal from the synchronization signal generator 70. (or an electronic endoscope 4) detects the type of the detection result signal T. And outputs it to the C73.

  SW1~SW4 of endoscopic imaging camera device 5 (or the electronic endoscope 4) is connected to the resistor R1~R4 pulled up, remote SW detects the depressed state of SW1~SW4 at the level of High / Low after converting the serial SW detection signal by the signal converter 80, it is outputted to the CPU71 through the isolation circuit 106 of the sixth.

  Here, the function executed by operating SW1 to SW4 can be set on the video processor 3 side. SW1~SW4, when pressed becomes Low, it instructs the implementation of the set function to the CPU 71. Therefore, while the signals from SW1 to SW4 are High, the CPU 71 does not perform the set function.

  The functions set in SW1 to SW4 are functions such as a freeze instruction, a release instruction, an outline emphasis instruction, and an image recording instruction, but are not limited thereto.

  T. T. et al. C73, the pulse from the oscillator 69, based on a detection result signal from the shutter control signal and the op detection circuit 75 from the shutter control circuit 68, the type of endoscope imaging camera device 5 (or the electronic endoscope 4) matched horizontal / vertical synchronizing signal and the internal control signals (HD, VD, SCK, SDAT, SEN) to generate a frequency divider dividing the frequency control of the 72 and 3-channel a / D converter 43, a / D A timing signal for executing the conversion timing control in the converter (A / D) 62 is output.

  Furthermore, the patient circuit 41 is a power supply circuit 77 for external supply is provided, optimum voltage to the endoscopic imaging camera device 5 or the electronic endoscope 4 (+ 15V, + 13V, + 12V, + 7V, + 5V, + 3.3V, -5V, -7V, etc.).

  The first isolation circuit 101, as shown in FIG. 5, meet the standards of known LVDS differential driver 111 and differential receiver 113 (low-voltage differential signal transmission method), isolation by the pulse transformer 112 configuration is achieved. The LVDS enables high-speed data transfer of large data 12 bits × 3.

  Incidentally, the first isolation circuit 101 is not limited to LVDS, for example, high-speed can be isolation by the light transmission method consisting optical link transmitter 121, an optical link receiver 122 and optical fiber 123 as shown in FIG. 6 it may be configured to perform the data transfer.

  As shown in FIG. 1, an endoscope connector device 1 of this embodiment, the electrical contact tip has a plurality of, for example, gold-plated contact surfaces of the upper and lower surfaces of the card edge 1a made of an insulating member having a substantially flat box-shaped It consists plug 1b with, the plug 1b by inserting, attached to the receptacle 3a provided in e.g. the front of the video processor 3, the video processor 3 and the endoscope imaging camera device 5 (or the electronic endoscope 4 ) are electrically connected.

  In general, endoscopic examination, endoscopic imaging camera device 5 or the electronic endoscope 4, the inspection is completed, followed by drying carried out disinfection and sterilization by autoclave or the like, which can be used for the next check state It is held in.

  As shown in FIG. 7, which is an arrow view of arrow A in FIG. The electrical contacts 201A to 217A are provided, and a plurality of, for example, 17 electrical contacts 201B to 217B are provided on the contact surface of the B surface.

  Each electrical contact 201A～217A, the 201B～217B, signals as shown in FIG. 8, the power supply, GND are allocated.

  Since A plane and B plane are separated the thickness of the card edge 1a made of an insulating member, and the electrical contact 201A~217A electrical contacts 201B～217B, certainly not be a tentatively drying after washing is sufficiently It can hold Do insulated state in the a plane and B plane each side, so that the insulation of the adjacent electrical contacts (e.g., electrical contacts 210A and the electrical contacts 211A) is dependent on the dry state, and the like.

First, power supply allocation will be described with reference to FIGS. As shown in FIG.
Voltage + 12V power supply: electric contact 210A
Voltage + 13V power supply: Electrical contact 211A
Voltage + 15V power supply: electric contact 212A
Voltage + 5V power supply: electrical contact 213A
Voltage + 3.3V power supply: 214A electrical contact
Power supply of voltage -7V: Electrical contact 214B
Voltage-5V power supply: Electrical contact 215B
Voltage + 7V power supply: Electrical contact 217A
Assigned.

  That is, the scope sensed supply voltage + 12V, the power supply voltage + 13V, the voltage + 15V power source, each electrical contact of the power supply voltage + 5V electrical contacts at the other end of the power of adjacent and (voltage + 12V is being pulled up signal), drying adjacent insufficient supply of voltage + 12V, the power supply voltage + 13V, the power supply voltage + 15V, even if the power supply voltage + 5V shorted, the voltage of these power supplies because the positive side voltage, large current the output of the power supply by leakage prevention function of the video processor 3 side easily in can be turned off, the endoscopic imaging camera device 5 or the electronic endoscope 4 and the video processor 3 can damage not flow it is possible to prevent.

  Similarly, the electrical contacts 217A of the power supply voltage + 12V is adjacent to the electrical contacts of SW3 signal is pulled up, even if short, endoscopic imaging camera device 5 or the electronic endoscope 4 and video processor 3 can be prevented from being damaged.

  More similar power supply voltage -7V, the electrical contacts of the voltage -5V supply located next (the other end of the electrical contacts of the power supply voltage -7V is NC (No Connection: open contact), the voltage -5V The electrical contact on the other end of the power supply is GND). Even if these adjacent power supply of -7V and power supply of -5V are short-circuited due to insufficient drying, the voltage of these power supplies is -side voltage, so a large current damage to the video output of the power supply by the processor 3 side of the leakage prevention function readily can be turned off, endoscopic imaging camera device 5 or the electronic endoscope 4 and the video processor 3 without flowing it is possible to prevent that.

  It will now be described allocation of the SW signal SW1 to SW4.

SW1 signal: Electrical contact 215A
SW2 signal: Electrical contact 212B
SW3 signal: Electrical contact 216A
SW4 signal: Electrical contact 211B
The electrical contacts of the SW1 signal and SW3 signal assigned to the A side are adjacent to each other, and the electrical contacts on the other end side are the voltage + 3.3V power source for the SW1 signal and the voltage for the SW3 signal. Since the power supply is +7 V, even if the drying is insufficient and the electrical contacts of the SW1 signal and SW3 signal are short-circuited to the adjacent electrical contacts, the SW1 signal and SW3 signal are fixed to the high state. The SW1 signal and the SW3 signal do not become low even when the SW1 or SW3 of the imaging camera device 5 or the electronic endoscope 4 is pressed. Therefore, the operation of the SW1 or SW3 is only ignored. It is possible to reliably prevent the set function from operating unintentionally.

  Similarly, the electrical contacts of which SW2 signal and SW4 signal assigned to B side are adjacent one another and the electrical contacts of the respective other end, NC: becomes (No Connection release contact) because there, if the electric contact of the SW2 signal and SW4 signal is short-circuited because it is secured in a High state, it is possible to reliably prevent the function set to SW2 or SW4 is operated unintentionally.

  Further, when the electric contact of the SW2 signal or SW4 signal is shorted to NC electrical contacts at the other end can hold normal switch function because there is no effect on the SW2 signal or SW4 signal.

  Thus, in the present embodiment, even if short-circuit the electrical contacts electrical contacts of the power supply system are adjacent, to prevent damaging the endoscope imaging camera device 5 or the electronic endoscope 4 and the video processor 3 Can do. Even if the electrical contacts of SW1 to SW4 are short-circuited to the adjacent electrical contacts, or even in the worst case, the function set in SW1 to SW4 operates unintentionally only by ignoring the switch instruction. There is nothing to do.

  Incidentally, although the electrical contacts provided on the upper and lower side contact surface of the card edge 1a 17 pieces each and not limited thereto, may be 18 or more, by disposing the NC contact between this case the electrical contacts for appropriate power source or signal Bayori effectively it is possible to suppress the electrical influence.

  The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the scope of the present invention.

1 is a configuration diagram showing a configuration of an endoscope apparatus according to Embodiment 1 of the present invention. Block diagram showing the configuration of the endoscopic imaging camera apparatus of FIG. 1 Block diagram showing the configuration of an electronic endoscope in Fig. 1 Block diagram showing the configuration of a video processor in FIG. 1 Diagram showing a configuration of a first isolation circuit of FIG. 4 Diagram showing a configuration of a variation of the first isolation circuit of FIG. 4 The arrow view which looked at the connector apparatus for endoscopes of FIG. 1 from arrow A Illustration the allocation of electrical contacts of FIG. 7

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Endoscope connector apparatus 1a ... Card edge 1b ... Plug 2 ... TV monitor 3 ... Video processor 3a ... Receptacle 4 ... Electronic endoscope 5 ... Endoscopic imaging camera apparatus 6 ... Cable 201A-217A, 201B- 217B ... Electric contact agent Patent attorney Susumu Ito

Claims (2)

Provided in an endoscope imaging device provided with an imaging device for imaging an endoscopic image attached to an eyepiece portion of an endoscope or an electronic endoscope provided with an imaging device at a distal end portion of the endoscope In an endoscope connector device for connecting a plug having a card edge-shaped connection convex portion at a base end to a receptacle and transmitting information from the above-described imaging device to a video processor,
The connecting projection is
It consists of a substantially box-shaped insulating member,
The upper and lower contact surfaces are made substantially flat,
A plurality of types of power supply from the video processor to the endoscope imaging device or the electronic endoscope, and the video processor and the endoscope imaging device, insulated from the upper and lower contact surfaces, respectively. Or having the plurality of electrical contacts for sending and receiving signals between the electronic endoscopes,
The electrical connector for power supply is arranged at least adjacent to another electrical contact for power supply with the same potential. The endoscope according to claim 1, wherein among the electrical contacts for signal transmission / reception, at least the electrical contacts for signal transmission / reception that are pulled up to a positive potential are arranged adjacent to each other. Connector device.

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