JP4656842B2 - Endoscope connector device - Google Patents

Description

  The present invention relates to an endoscope imaging apparatus provided with an imaging element for imaging an endoscope image attached to an eyepiece part of an endoscope or an electronic endoscope provided with an imaging element at an endoscope distal end part. The present invention relates to an endoscope connector device for connecting a plug provided in a receptacle to a receptacle and transmitting information from the above-described imaging device to a video processor.

  Japanese Patent Application Laid-Open No. 6-251828 proposes a so-called card edge type endoscope connector device in which a plug contact portion and a main body portion are square.

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 there is also a problem that cleaning and disinfection and sterilization tends to cause water and chemicals to accumulate on the uneven surface of the contact surface, which takes 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, although the endoscope connector device proposed in Japanese Patent Application Laid-Open No. 2002-216902 is excellent in cleaning and draining of the contact surface of the plug, it still takes time to dry the contact surface of the plug reliably. However, there is a problem that it is difficult to reliably prevent an electrical short circuit between the contacts on the contact surface of the plug.

  The present invention has been made in view of the above circumstances, and even if the contact surface of the plug is electrically short-circuited, the electrical connection to the endoscope imaging device, the electronic endoscope, or the video processor can be achieved. An object of the present invention is to provide an endoscope connector device that can suppress adverse effects to a minimum.

An endoscope connector device according to the present invention is an endoscope connector device in which a card edge-like connection convex portion has a plug connected to a receptacle provided in a video processor, and the connection convex portion is substantially box-shaped. A first surface having a contact surface of the substantially box-shaped insulation member, and a second surface having a contact surface provided opposite to the first surface. Each of the first and second surfaces has a plurality of electrical contacts insulated by the first and second surfaces, the plurality of electrical contacts being invisible from the video processor. A plurality of electrical contacts for supplying power to the imaging device for a mirror or electronic endoscope at a positive voltage; and power from the video processor to the imaging device for an endoscope or the electronic endoscope at a voltage. Multiple electrical connections to supply And a plurality of electrical contacts for transmitting and receiving signals between the video processor and the endoscope imaging device or the electronic endoscope, the plurality for supplying power at the + voltage Each of the electrical contacts is provided on the first surface and is pulled to a positive potential among the other electrical contacts for supplying power at the + voltage or the plurality of electrical contacts for transmitting and receiving the signal. Each of the plurality of electrical contacts arranged adjacent to the electrical contact being up and for supplying power at the -voltage is provided on the second surface and supplies power at the -voltage To be arranged adjacent to other electrical contacts.

  According to the present invention, even if the contact between the contact points of the plug is electrically short-circuited, the electrical influence on the endoscope imaging device, the electronic endoscope, or the video processor is minimized. There is an effect that can be.

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

  1 to 8 relate to the first embodiment of the present invention, FIG. 1 is a block diagram showing the configuration of the endoscope apparatus, and FIG. 2 is a block diagram showing the configuration of the endoscope imaging camera apparatus in 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 is a diagram showing a configuration of a modified example of the first isolation circuit of FIG. 4, FIG. 7 is a view of the endoscope connector device of FIG. 1 as viewed from the arrow A, and FIG. 8 is an electrical contact of FIG. It is explanatory drawing about allocation.

  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. It is provided at the distal end portion of the cable 6 extending from the endoscope imaging camera device 5 attached to the endoscope 4 or an eyepiece portion of an endoscope (not shown).

  As shown in FIG. 2, the endoscope imaging camera device 5 captures an R-band endoscope image color-separated by the color separation prism 11 and a color separation prism 11 that color-separates the endoscope image into RGB. An R-CCD 12, a G-CCD 13 that captures a G-band endoscope image color-separated by the color separation prism 11, and a B-CCD 14 that captures a B-band endoscope image color-separated by the color separation prism 11. The R-CDS 15 that performs correlated double sampling of the photoelectric conversion signal from the R-CCD 12, the G-CDS 16 that performs correlated double sampling of the photoelectric conversion signal from the G-CCD 12, and the photoelectric conversion signal from the B-CCD 12 B-CDS17 for multiple sampling, drive signals for driving the R-CCD12, G-CCD13, and B-CCD14, and R-CDS15, G-CDS16, and 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, a switch unit 20 including four switches SW1 to SW4 is provided.

  The R-CDS signal from the R-CDS15, G-CDS16, and B-CDS17, the G-CDS signal, the B-CDS signal, the horizontal / vertical synchronization signal to the timing generator 18 and the internal control signals (HD, VD, SCK). , SDAT, SEN, GCLK), and the contact output of the identification resistor 19 and the switches SW1 to SW4 connect the endoscope connector device 1 of the endoscope imaging camera device 5 to the video processor 3, so that the endoscope The image pickup camera device 5 and the video processor 3 can be transmitted and received.

  As shown in FIG. 3, the electronic endoscope 4 includes a CCD 31 provided at the distal end of an insertion portion having a color separation filter (not shown) for separating color components of an endoscopic image on the imaging surface, and a photoelectric sensor from the CCD 31. An amplifier 32 that amplifies and outputs the conversion signal, a timing generator 33 that generates a sampling signal and the like for performing correlated double sampling of a drive signal for driving the CCD 31 and a signal that has passed through the amplifier 32 picked up by the CCD 31, and an electronic An identification resistor 34 for discriminating the type of the endoscope 45, a switch unit 35 including four switches SW1 to SW4 for instructing execution of various functions provided on the outer peripheral surface of the operation unit of the electronic endoscope 45, etc. It is configured with.

  Then, a CCD signal which is an output signal of the amplifier 32, a horizontal / vertical synchronizing signal to the timing generator 33 and internal control signals (HD, VD, SCK, SDAT, SEN, GCLK), a sampling signal (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. You can send and receive with.

  As shown in FIG. 4, the video processor 3 includes a patient circuit 41 and a secondary circuit 42, and the patient circuit 41 and the secondary circuit 42 are electrically isolated (insulated).

  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. It is converted into a bit digital signal, converted into a serial signal by a parallel / serial converter (P / S converter) 44, and output to the secondary circuit 42 via the first isolation circuit 101. Yes.

  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.

  The RGB signal subjected to the contour emphasis processing by the contour emphasis circuit 47 is subjected to white balance by the white balance circuit (W / B) 48, color correction is performed by the color correction circuit 49, and then the γ correction circuit 50 performs γ It is corrected and stored in the frame memory 51.

  The RGB signals stored in the frame memory 51 are output to the TV monitor 2 via the encoder 52, display an endoscopic image on the TV monitor 2, and also output to the compression circuit 53. In the compression circuit 53, a compressed image such as MPEG is generated from the endoscope image, and the compressed image can be recorded in an external memory (not shown) via the external memory control circuit 54.

  The CCD signal from the electronic endoscope 4 is correlated double-sampled by the sampling signal (SHP, SHD, XRS) from the timing generator 33 by the CDS 61 provided in the patient circuit 41, and then the A / D converter (A / D) D) After being digitized by 62, converted to a serial signal by a parallel / serial converter (P / S converter) 63 and output to the secondary circuit 42 via the second isolation circuit 102. It has become.

  The serial signal transmitted to the secondary circuit 42 via the second isolation circuit 102 is converted into a parallel signal by the serial / parallel converter (S / P conversion) 64, and the color separation circuit 65 and the RGB matrix circuit 66 are converted. Are converted into RGB signals via the, and then output 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. The shutter control circuit 68 transmits 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 to the patient circuit 41 side via 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 transmitted to the patient circuit 41 side via the fourth isolation circuit 104. The pulse oscillated by the oscillator 69 is also transmitted to the patient circuit 41 side via the fifth isolation circuit 105.

  Further, the secondary circuit 42 is provided with a CPU 71, and the CPU 71 performs control based on signals from the switches SW1 to SW4 input via the sixth isolation circuit 106 and control of each circuit on the secondary circuit 42 side. Various control signals are generated and output.

  The second to sixth isolation circuits 102 to 106 are constituted by, for example, photocouplers (not shown), and the first isolation circuit 101 is a known LVDS (low voltage differential) as will be described later. Signal transmission is performed according to a standard defined in (Signal Transmission System).

  The pulse from the oscillator 69 transmitted to the patient circuit 41 via the fifth isolation circuit 105 is input to the frequency dividing circuit 72 and the timing controller (TC) 73. The frequency is divided by the frequency controlled by C73 and output as GCLK to the imaging camera device 5 for endoscope (or the electronic endoscope 4) via the connector device 1 for endoscope.

  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 receives the voltage dividing resistance value (SEL) via the A / D converter 76 based on the timing signal from the synchronization signal generator 70, so that the endoscope imaging camera device 5 (Or electronic endoscope 4) type is detected, and the detection result signal is converted to T.P. It outputs to C73.

  SW1 to SW4 of the endoscope imaging camera device 5 (or electronic endoscope 4) are connected to the pulled-up resistors R1 to R4, and the pressed state of SW1 to SW4 is detected at a High / Low level to detect remote SW. After being converted into a serial SW detection signal by the signal converter 80, the signal is output to the CPU 71 via the sixth isolation circuit 106.

  Here, the function executed by operating SW1 to SW4 can be set on the video processor 3 side. SW1 to SW4 become Low when pressed, and instruct the CPU 71 to execute the set function. 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.A. C73 is classified into the type of the imaging camera device 5 for endoscope (or the electronic endoscope 4) based on the pulse from the oscillator 69, the shutter control signal from the shutter control circuit 68, and the detection result signal from the corp detection circuit 75. A suitable horizontal / vertical synchronizing signal and internal control signals (HD, VD, SCK, SDAT, SEN) are generated, and the frequency control in the frequency dividing circuit 72 and the 3-channel A / D converter 43, A / D A timing signal for executing conversion timing control in the converter (A / D) 62 is output.

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

  As shown in FIG. 5, the first isolation circuit 101 satisfies a known LVDS (low voltage differential signal transmission system) standard from a differential driver 111 and a differential receiver 113 and is isolated by a pulse transformer 112. Is planned. This LVDS enables high-speed data transfer of large capacity data of 12 bits × 3.

  The first isolation circuit 101 is not limited to the LVDS, and for example, as shown in FIG. 6, high-speed isolation is possible by an optical transmission method including an optical link transmitter 121, an optical link receiver 122, and an optical fiber 123. Data transfer may be performed.

  As shown in FIG. 1, the endoscope connector device 1 of the present embodiment has a plurality of, for example, gold-plated electrical contacts on the contact surfaces on the upper and lower surfaces of the card edge 1 a made of an insulating member having a substantially thin box shape at the tip. The plug 1b is inserted into and attached to a receptacle 3a provided on the front surface of the video processor 3, for example, so that the video processor 3 and the imaging camera device 5 for endoscope (or the electronic endoscope 4) are mounted. ) Are electrically connected.

  In general, in an endoscopic inspection, the imaging camera device 5 for an endoscope or the electronic endoscope 4 can be used for the next inspection by being sterilized and sterilized by an autoclave apparatus and drying after the inspection is completed. Retained.

  As shown in FIG. 7 which is an arrow A view of FIG. 1, when the upper contact surface of the card edge 1a is an A surface and the lower contact surface is a B surface, a plurality of, for example, 17 contact surfaces are provided on the A surface. 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.

  As shown in FIG. 8, a signal, a power supply, and GND are allocated to each of the electrical contacts 201A to 217A and 201B to 217B.

  Here, since the surface A and the surface B are separated from each other in the thickness of the card edge 1a made of an insulating member, the electrical contacts 201A to 217A and the electrical contacts 201B to 217B are reliable even if drying after washing is not sufficient. However, the insulation of the adjacent electrical contacts (for example, the electrical contact 210A and the electrical contact 211A) depends on the dry state or the like on the surface side of each of the A surface and the B surface.

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 electrical contacts of the voltage +12 V power source, the voltage +13 V power source, the voltage +15 V power source, and the voltage +5 V power source are adjacent to each other (the electrical contact on the other end side of the voltage +12 V power source is pulled up) Signal), even if these adjacent + 12V power supply, voltage + 13V power supply, voltage + 15V power supply, and voltage + 5V power supply are short-circuited, these power supply voltages are on the + side voltage. The power supply output can be easily turned off by the leakage prevention function on the video processor 3 side without flowing, and the endoscope imaging camera device 5 or the electronic endoscope 4 and the video processor 3 are damaged. Can be prevented.

Similarly, the electrical contacts 217A of the power supply voltage + 7 V is adjacent to the electrical contacts SW3 signal is pulled up, even if short, endoscopic imaging camera device 5 or the electronic endoscope 4 and It is possible to prevent the video processor 3 from being damaged.

  Similarly, the electrical contacts of the voltage -7V power source and the voltage -5V power source are adjacent to each other (the electrical contact on the other end side of the voltage -7V power source is NC (non-connection: open contact)), and the voltage -5V power contact. 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 The output of the power supply can be easily turned off by the leakage prevention function on the video processor 3 side without flowing, and the imaging camera device 5 for endoscope or the electronic endoscope 4 and the video processor 3 are damaged. Can be prevented.

  Next, the assignment of each SW signal of SW1 to SW4 will be described.

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. Even if SW1 or SW3 of the imaging camera device 5 or the electronic endoscope 4 is pressed, the SW1 signal and the SW3 signal do not become Low, so the operation of the SW1 or SW3 is only ignored, so the SW1 or SW3 It is possible to reliably prevent the set function from operating unintentionally.

  Similarly, the electrical contacts of the SW2 signal and SW4 signal assigned to the B side are adjacent to each other, and the electrical contacts on the other end side are NC (non-connection: open contact). Therefore, when the electrical contacts of the SW2 signal and the SW4 signal are short-circuited, they are fixed to the high state, so that it is possible to reliably prevent the function set in SW2 or SW4 from operating unintentionally.

  Further, when the SW2 signal or SW4 signal electrical contact is short-circuited to the NC electrical contact on the other end side, the SW2 signal or SW4 signal is not affected, and the normal switch function can be avoided.

  As described above, in this embodiment, even if the electrical contact of the power supply system is short-circuited to the adjacent electrical contact, the endoscope imaging camera device 5 or the electronic endoscope 4 and the video processor 3 are prevented from being damaged. 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.

  The number of the electrical contacts provided on the upper and lower contact surfaces of the card edge 1a is 17 each. However, the number is not limited to this, and may be 18 or more. In this case, an NC contact is appropriately disposed between the power contacts or the signal electrical contacts. Thus, the electrical influence can be suppressed more effectively.

  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. The block diagram which shows the structure of the imaging camera apparatus for endoscopes of FIG. The block diagram which shows the structure of the electronic endoscope of FIG. The block diagram which shows the structure of the video processor of FIG. The figure which shows the structure of the 1st isolation circuit of FIG. The figure which shows the structure of the modification of the 1st isolation circuit of FIG. The arrow view which looked at the connector apparatus for endoscopes of FIG. 1 from arrow A Explanatory drawing of assignment of electrical contacts in FIG.

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)

In an endoscope connector device having a plug connected to a receptacle provided in a video processor with a card edge-shaped connection convex portion,
The connecting projection is
It consists of a substantially box-shaped insulating member,
A first surface having a contact surface of the substantially box-shaped insulating member and a second surface having a contact surface provided opposite to the first surface are configured as a substantially flat surface.
Each of the first and second surfaces having a plurality of electrical contacts insulated by the first and second surfaces;
The plurality of electrical contacts are a plurality of electrical contacts for supplying power with a positive voltage from the video processor to an endoscope imaging device or an electronic endoscope, and the endoscope imaging device from the video processor. Or a plurality of electrical contacts for supplying power at a voltage to the electronic endoscope, and signals between the video processor and the endoscope imaging device or the electronic endoscope A plurality of electrical contacts,
Each of the plurality of electrical contacts for supplying power at the + voltage is provided on the first surface, and transmits or receives another electrical contact for supplying power at the + voltage or the signal. Arranged adjacent to an electrical contact that is pulled up to a positive potential among the plurality of electrical contacts.
Each of the plurality of electrical contacts for supplying power at the -voltage is provided on the second surface and disposed adjacent to another electrical contact for supplying power at the -voltage. An endoscope connector device characterized by comprising: Each of the plurality of electrical contacts pulled up to the positive potential has a plurality of switches provided in the endoscope imaging device or the electronic endoscope for instructing execution of a predetermined function. The endoscope connector device according to claim 1, wherein the endoscope connector device is an electrical contact to which an instruction signal is supplied from either one .

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