WO2012134247A2 - Appareil de détection des fuites pour un endoscope, et procédé de détection des fuites associé - Google Patents

Appareil de détection des fuites pour un endoscope, et procédé de détection des fuites associé Download PDF

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Publication number
WO2012134247A2
WO2012134247A2 PCT/KR2012/002434 KR2012002434W WO2012134247A2 WO 2012134247 A2 WO2012134247 A2 WO 2012134247A2 KR 2012002434 W KR2012002434 W KR 2012002434W WO 2012134247 A2 WO2012134247 A2 WO 2012134247A2
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WIPO (PCT)
Prior art keywords
endoscope
pressure
leak
air
leakage
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Ceased
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PCT/KR2012/002434
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English (en)
Korean (ko)
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WO2012134247A3 (fr
Inventor
박정희
최동열
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Individual
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Individual
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00057—Operational features of endoscopes provided with means for testing or calibration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00112—Connection or coupling means
    • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
    • A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes

Definitions

  • the present invention relates to an endoscopy leak inspection apparatus and a method thereof, and more particularly to an apparatus and a method for inspecting the leakage according to whether the endoscope is damaged in the endoscope provided with at least one pipeline through which a chemical liquid or gas flows. .
  • Endoscopy is an apparatus designed to insert a machine inside an organ to observe organs that cannot be examined, operated, or visually identified, for example, bronchial, esophagus, stomach, heart, and large intestine.
  • an organ is observed using a small camera such as a CCD sensor.
  • the endoscope is provided with a scope unit at one end inserted into the body.
  • the scope unit includes a CCD camera for acquiring an image, an angle unit for driving the movement of the CCD camera, a light source for irradiating light onto a subject, and the like.
  • the endoscope is provided with a plurality of pipes for injecting a chemical solution or a gas.
  • the endoscope is also provided with a conduit into which a number of cables are inserted to control the movement of the small camera or to irradiate light.
  • Such endoscopy requires a procedure to inspect the pipelines for damage before the procedure. This may result in damage to any part of the pipeline, exposing the scope unit to the chemicals or gases supplied to the pipeline, in which case it is not only a cause of failure of the endoscope but also a fatal problem that requires the entire endoscope to be discarded. A leak test is required.
  • an endoscope leak test is performed using an endoscope washer that cleans the endoscope before the endoscope is used for the procedure. If there is no abnormality, the endoscope is used for the procedure.
  • the conventional endoscope leak inspection apparatus and method to be described below has a problem that the reliability of the inspection is deteriorated because the inspection time is very long, it is difficult to detect the location of the leak, and a highly skilled function is required.
  • a general endoscope system 2 includes an endoscope 20 and a peripheral device 10.
  • This endoscope system 2 is disclosed, for example, in Japanese Laid-Open Patent Publication No. 10-2007-97522 (published October 4, 2007) filed by Olympus Medical Systems, Japan.
  • the endoscope 20 includes an insertion unit 30, an operation unit 40, and a connector unit 70.
  • the peripheral device 10 includes an air sending and receiving device 12, a light source device 14, and a signal processing device 16. Although not shown in the drawing, the peripheral device 10 further includes a key input unit, a monitor, and the like.
  • Insertion portion 30 is formed long and thin so as to be inserted into the body cavity.
  • the inserting portion 30 is formed by connecting the rigid tip hard portion 32, the curved curved portion 34 to be bent and the elongated flexible tube portion 36 sequentially from the tip side.
  • the imaging units 24 and 26 are provided as small cameras, such as CCD sensors.
  • a switching circuit portion 28 electrically connected to the imaging units 24 and 26 is accommodated. This switching circuit part 28 switches so that any one of the imaging units 24 and 26 and the electrical connector 56 of the endoscope 20 may be electrically connected.
  • the operation unit 40 is connected to the rear end side of the insertion unit 30.
  • the manipulation unit 40 has a gripper sequence 42 held by an operator on one side connected to the insertion unit 30.
  • the gripping portion sequence 42 is provided with a treatment instrument insert 44 for inserting an endoscope treatment instrument (not shown).
  • the treatment instrument insertion hole 44 is connected to the first channel 46 formed therein, and the first channel 46 is inserted into the grip part sequence 42 and the insertion part 20 to penetrate the hard part 32. It is connected to the tip opening 22. Then, the endoscope treatment instrument is inserted from the treatment instrument insertion port 44, and the endoscope treatment instrument protrudes from the tip opening 22 by inserting the first channel 46 therethrough.
  • the operation unit sequence 50 is integrally connected to the other side of the holding unit sequence 42.
  • the upper and lower curved handle 52 and the left and right curved handle 54 for bending the curved portion 34 is pivotally supported on the coaxial.
  • the curved portions 34 can be bent in four directions.
  • the operation unit sequence 50 includes an air supply / receiving switch 56 for operating the air supply / return from the front end opening 22 of the tip hard part 32 and the switching circuit part 28 of the tip hard part 32.
  • the switching switch 58 is arranged side by side.
  • the universal cable 60 extends and protrudes from the operation part 40, and the connector part 70 is arrange
  • the connector 70 is provided with an air feeder connection port 72 connected to the air feeder 12 of the peripheral device 10.
  • the second channel 48 is connected to the inside of the air feed port connection port 72, and the second channel 48 is inserted into the universal cable 60 and the operation unit 40 to be inserted into the grip unit sequence 42. Join the first channel 46. And by operating the air feed switch 56, the air feed water from the air feed device 12 through the air feed port connection port 72, the second and first channels 48, 46 and the tip opening 22 to the affected part Is done.
  • a light source connector 74 connected to the light source device 14 is disposed in the connector portion 70.
  • a light guide (not shown) is connected to the inner end of the light source connector 74, and the light guide penetrates through the universal cable 60, the operation unit 40, and the insertion unit 30, and the tip hard part 32. Is connected to an illumination lens (not shown).
  • the light source device 14 selectively generates normal light for normal light observation and excitation light for fluorescence observation by operating the switching switch 58 of the operation unit 40. And normal light or excitation light is irradiated to the affected part from the light source device 14 through the light source connector 74, a light guide, and an illumination lens.
  • an electrical connector 76 electrically connected to the switching circuit portion 28 of the tip hard portion 32 is disposed.
  • the electrical connector 76 is connected to a signal processing device 16 that processes signals such as an image through the scope cable 78.
  • the endoscope 20 performs a leak test using an endoscope cleaner, and the technology related to the endoscope leak test has been variously disclosed.
  • the method of detecting leaks using an endoscope cleaning disinfection device and an endoscope cleaning disinfection device in Korean Patent Registration Publication No. 10-0964769 is an endoscope cleaning using an endoscope cleaning disinfection device.
  • an endoscope cleaning using an endoscope cleaning disinfection device In case of disinfection, check for leaks together.
  • the commercially available endoscope cleaning disinfection device is expensive, and it is uneconomical in terms of cost, such as purchase cost and labor cost, because nurses, etc., are resident and directly operated and inspected.
  • Another object of the present invention is to provide a low-cost endoscope leak inspection apparatus and its endoscope leak inspection method.
  • Still another object of the present invention is to provide an endoscope leak inspection apparatus and an endoscope leak inspection method thereof for accurately detecting the endoscope leakage portion.
  • Endoscope leak inspection apparatus of the present invention for achieving the above object is characterized in that it is mounted on the endoscope to perform the endoscope leak test.
  • Such an endoscope leakage inspection apparatus can be manufactured at low cost, and can quickly and easily handle the endoscope leakage inspection.
  • one end of the connecting tube is directly or indirectly connected to the conduit formed inside the endoscope; It is mounted on the other end of the connection tube, and supplies a constant pressure of air to the pipeline through the connection tube, to maintain a constant pressure in the pipeline, to monitor the pressure change of the pipeline to inspect the endoscope leak It includes a tester.
  • the tester A power supply unit supplying DC power or battery power to the tester; An air supply unit supplying air of a predetermined pressure to the pipe line; A sensor for measuring a pressure change of air from the conduit when air of a predetermined pressure is supplied from the air supply unit; A mode selection button for inputting the tester to perform a leak test in an automatic mode or a manual mode; In response to the input of the mode selection button, the power is supplied from the power supply to supply air of a predetermined pressure to the conduit, and control the air supply to maintain a constant pressure in the conduit, from the sensor to the A controller for monitoring a change in pressure to determine leakage of the endoscope; When it is determined that a leak occurs in the endoscope, the controller may include a display unit which displays a leak occurrence state and information according to the pressure change under the control of the controller.
  • the tester A constant voltage circuit for supplying a constant voltage from the DC power supply or the battery;
  • the apparatus further includes a battery level detecting circuit configured to detect a remaining level of the battery from the power supplied from the battery.
  • the air supply unit A motor driving circuit which receives a control signal corresponding to the predetermined pressure from the controller; A motor rotating at a predetermined speed in response to the control signal from the motor driving circuit; A pump for discharging air of a predetermined pressure to the connection tube in response to the rotational speed from the motor; A valve driving circuit for opening and closing under control of the controller; And a solenoid valve driven by the valve driving circuit to open to discharge the pressurized air into the conduit when the leak test operation of the tester is completed.
  • the controller may further include an alarm unit configured to notify the outside of a leak test result of the endoscope under the control of the controller.
  • the controller In yet another embodiment, the controller; The maximum pressure value corresponding to the predetermined pressure supplied to the endoscope pipe and the deviation value for determining whether the pressure value measured from the pressure sensor is within an allowable range are set and stored, and the measured pressure value is stored. The leak of the endoscope is determined by comparing with the maximum pressure value.
  • an endoscope leak inspection method using an endoscope leak inspection apparatus mounted to the endoscope According to this method, it is possible to check whether or not a leak occurs quickly and easily by using the automatic mode or the manual mode.
  • Endoscopic leak inspection method of the present invention comprises the steps of mounting the endoscope leak inspection apparatus to the endoscope; Supplying power to the endoscope leak inspection apparatus; Selecting an automatic mode or a manual mode of the endoscope leak inspection apparatus; If the automatic mode is selected, supplying air of a predetermined pressure to an internal conduit of the endoscope; Stabilizing the pipe to maintain the constant pressure; After the stabilization, calculating a mean pressure value by measuring the pressure value of the pipe a plurality of times for a predetermined time; Calculating a deviation by comparing the average pressure value with a set pressure value; Determining whether the deviation is within a tolerance range; If the deviation is out of the tolerance range, it is determined that a leak occurs in the pipe line and includes notifying to the outside.
  • the method comprises; If the manual mode is selected, supplying air of the constant pressure to the conduit; Measuring a change in pressure in the conduit; Determining that a leak occurs in the conduit in response to a pressure change in the conduit; When the leak occurs in the pipe line, placing the endoscope in a treatment tank in which water is placed while the endoscope leak inspection apparatus is mounted; Forcing air back into the endoscope; Checking the leaked portion of the endoscope by maintaining the pressurized pressure; If the leaked part is identified, stopping pressurization into the conduit; And discharging the pressurized air to the duct of the endoscope.
  • the method; If the deviation is within the tolerance range, it is determined that no leakage occurs in the pipeline further comprises the step of notifying to the outside.
  • the endoscope leak inspection apparatus of the present invention can be leak-tested immediately before or after the procedure using the endoscope by mounting and detaching the endoscope to inspect the endoscope.
  • the endoscope leak inspection apparatus of the present invention by inspecting the leak state of the endoscope before cleaning and disinfecting the endoscope using a chemical solution, such as cleaning liquid, rinse liquid, water, etc., it is possible to prevent the endoscope in advance, When it occurs, the cost of maintenance due to the repair of the endoscope can be drastically reduced.
  • a chemical solution such as cleaning liquid, rinse liquid, water, etc.
  • the endoscope leak test apparatus of the present invention has a relatively short leak test time and can be inspected in an automatic mode or a manual mode, so that the endoscope leak test can be performed quickly and easily.
  • the endoscope leak inspection apparatus of the present invention can be produced and purchased at a low cost, and it is economical because the leak inspection can be performed without the operator resident.
  • the endoscope leak inspection apparatus of the present invention when the leakage of the endoscope through the manual mode, it is possible to check the leakage portion.
  • the endoscope leak inspection device if the endoscope inspection results, the endoscope is leaking state using the endoscope leak inspection device, it is possible to apply for after-sales service to the endoscope manufacturer, etc., it is possible to follow up promptly.
  • FIG. 1 is a diagram showing the configuration of a general endoscope system
  • Figure 2 is a perspective view showing the configuration of the endoscope leak inspection apparatus mounted to the endoscope according to an embodiment of the present invention
  • 3A and 3B are perspective views showing the fastening structure of the connection adapter and the connection tube shown in FIG. 2;
  • FIG. 4 is a block diagram showing the configuration of the endoscope leak inspection apparatus shown in FIG.
  • FIG. 5 is a circuit diagram showing the configuration of the pressure sensor shown in FIG. 4 and its signal processing circuit
  • FIG. 6 is a diagram illustrating a screen configuration of a display unit shown in FIG. 2;
  • FIG. 7 is a flowchart showing the inspection procedure of the endoscope leak inspection apparatus according to the present invention.
  • FIG. 8 is a flowchart showing a leak inspection procedure in an automatic mode according to the embodiment of the present invention shown in FIG.
  • FIG. 9 is a flowchart showing a leak inspection procedure in a manual mode according to the embodiment of the present invention shown in FIG.
  • FIG. 10 is a waveform diagram for describing an endoscope leak inspection procedure shown in FIG. 7.
  • one end of the connecting tube is directly or indirectly connected to the conduit formed inside the endoscope; It is mounted on the other end of the connection tube, and supplies a constant pressure of air to the pipeline through the connection tube, to maintain a constant pressure in the pipeline, to monitor the pressure change of the pipeline to inspect the endoscope leak It includes a tester.
  • the tester A power supply unit supplying DC power or battery power to the tester; An air supply unit supplying air of a predetermined pressure to the pipe line; A sensor for measuring a pressure change of air from the conduit when air of a predetermined pressure is supplied from the air supply unit; A mode selection button for inputting the tester to perform a leak test in an automatic mode or a manual mode; In response to the input of the mode selection button, the power is supplied from the power supply to supply air of a predetermined pressure to the conduit, and control the air supply to maintain a constant pressure in the conduit, from the sensor to the A controller for monitoring a change in pressure to determine leakage of the endoscope; When it is determined that a leak occurs in the endoscope, the controller may include a display unit which displays a leak occurrence state and information according to the pressure change under the control of the controller.
  • FIG. 2 is a view showing the configuration of the endoscope leak inspection apparatus mounted to the endoscope according to an embodiment of the present invention
  • Figures 3a and 3b is a perspective view showing the configuration of the connection adapter and the connection tube shown in FIG.
  • the endoscope 20 includes an insertion unit 30, an operation unit 40, a universal cable 60, and a connector unit 70.
  • a scope unit 32 including a small camera such as a CCD sensor is provided at the tip of the insertion section 30, a scope unit 32 including a small camera such as a CCD sensor is provided.
  • This endoscope 20 is provided in the same or substantially similar form as shown in FIG. 1. Therefore, detailed description of the endoscope 20 is omitted here.
  • the endoscope 20 may have a different configuration depending on the type of various manufacturers and models, such as, for example, Olympus Medical Systems, Fujinon, Pentax, etc., the endoscope leak inspection apparatus of the present invention directly to the endoscope pipe Alternatively, you can connect indirectly to check for leaks.
  • the configuration and operation of the endoscope leakage inspection apparatus of the present invention will be described in detail using the endoscope of FIG. 1.
  • Endoscope leak inspection apparatus 100 of the present invention is a portable device for the endoscope leak inspection, it is mounted or detached to the connector portion 70 of the endoscope 20. That is, the endoscope leakage inspection apparatus 100 is mounted to the connector unit 70 for the leakage inspection of the endoscope 20.
  • the endoscope leakage inspection apparatus 100 supplies air of a predetermined pressure to a conduit (not shown) formed inside the endoscope 20, and thereby monitors and determines the endoscope leak by monitoring a pressure change in the endoscope 20. do.
  • the endoscope leakage inspection apparatus 100 of the present invention is mounted, detachable, and provided in a small size in the endoscope 20, so that it is easy to carry and inspect and can quickly and accurately handle the leakage inspection of the endoscope 20.
  • the endoscope leak test apparatus 100 is connected to the endoscope 20, the connection adapter 160, the connection tube 150 is coupled to the connection adapter 160, and the connection tube 150 is combined with the endoscope ( And a tester 100a that checks whether a leak occurs in the pipeline of 20).
  • the connection adapter 160 includes a metal adapter 162 and a waterproof cap 164 that are inserted into or fixed to the connector unit 70 of the endoscope 20. That is, as shown in FIGS. 3A and 3B, the connection adapter 160 may be inserted into and mounted on the opposite side of the cylindrical metal adapter 162 having one side open and the open side of the metal adapter 162. It includes a waterproof cap (164).
  • the side of the metal adapter 162 is provided with a connector 166 into which the connecting tube 150 is inserted and mounted.
  • the metal adapter 162 is inserted into one side of the connector part 70 of the endoscope 20, that is, the air feeder connection port 72, and is rotated to fix the metal adapter 162. At this time, the metal adapter 162 is hermetically coupled to the air feed port connection port 72.
  • connection tube 150 is inserted into the connector 166 of the metal adapter 162 through the connecting metal member 152 and is rotated and fixed. At this time, the connector 166 and the connection metal member 152 of the metal adapter 162 are hermetically coupled.
  • the connection tube 150 is, for example, provided with a flexible material, one end is mounted to the connection metal member 152, the other end is mounted to the tester 100a.
  • the connection tube 150 connects the endoscope 20 and the tester 100a through a connection adapter 160.
  • the tester 100a may include a housing 101 having a size that is easy to carry and store, a display unit 104 provided on one surface of the housing 101, a power switch 106, and a plurality of mode selection buttons 105. ).
  • the mode select buttons 105 are provided to select the automatic mode or the manual mode.
  • the mode selection button 105 may be variously changed according to the operation mode of the tester 100a. For example, it is apparent that the mode selection button 105 may be provided as one and may be selected as an automatic mode or a manual mode by turning it on and off.
  • one side of the housing 101 of the tester 100a is provided with a power jack (or socket) 109 into which a power plug for supplying DC power is inserted, and a connection port 107 for connecting the connection tube 150.
  • the connection port 107 may be provided so that the connection tube 150 may be inserted or fixed in a detachable manner.
  • FIG. 4 is a block diagram showing the configuration of the endoscope leak inspection apparatus shown in FIG. 2
  • FIG. 5 is a circuit diagram showing the configuration of the pressure sensor and its signal processing circuit shown in FIG. 4, and FIG. It is a figure which shows the screen structure of the display part shown in FIG.
  • the tester 100a includes a controller 102 that controls various operations, a power supply 110 supplying DC power, and an endoscope 20 leak inspection and operation state of the tester 100a.
  • a display unit 104 for displaying various information, an air supply unit 120 for supplying air of a predetermined pressure to a pipe of the endoscope 20, a pressure sensor 140 for measuring a pressure change in the pipe of the endoscope 20,
  • An interface unit 190 connected to an external electronic device (for example, a computer device) (not shown) for writing or updating a control program or the like stored in the memory 103 provided inside the controller 102.
  • an alarm unit 108 that outputs various audio signals according to the operation state of the tester 100a, a test result, and the like.
  • the tester 100a also includes a power switch 106 and a plurality of mode selection buttons 105.
  • the tester 100a may further include a pressure controller 180 that variably adjusts the size of the predetermined pressure.
  • the pressure adjusting unit 180 may be provided with, for example, a plurality of up-down buttons to adjust the level of pressurization and measurement pressure of the tester 100a up and down.
  • the tester 100a is set to a pressure value of about 300 mmHg, but the pressure value measured by the pipe of the endoscope 20 or measured by the pressure sensor 140 is set to a pressure value suitable for various types of endoscopes.
  • a range of the measured pressure value may be adjusted using the pressure adjusting unit 180.
  • the pressure value of the tester 100a may be adjusted to about 250 mmHg at the maximum.
  • the controller 102 is provided with a microprocessor, a microcontroller, or the like.
  • the controller 102 includes a memory 103 that can be written and read therein, and stores a control program for processing various operations of the tester 100a in the memory 103.
  • the controller 102 sets and stores the maximum pressure value of air supplied to the memory 103 in the endoscope pipe.
  • the controller 102 sets and stores an error value of the allowable range in order to determine whether the pressure value measured by the pressure sensor 140 is an error within the allowable range.
  • the controller 102 retries the air supply for the set number of times.
  • the set number of times means the number of times of preset input of three times, five times, etc. in consideration of air pressure, device size, and the like. If it is determined that the air is still not supplied even after retrying the set number of times, an error is displayed on the display unit, and the alarm unit is notified externally.
  • the control program of the controller 102 stores a processing method of the endoscope leak inspection mode of the tester 100a.
  • the endoscope leak test mode is provided in the automatic mode and the manual mode, and when one endoscope leak test mode is selected by the mode selection button 105, the controller 102 responds to the automatic mode or the manual mode. Inspect the endoscope for leaks. This inspection method will be described in detail with reference to FIGS. 7 to 10.
  • the power supply unit 110 is provided in the DC power supply unit 112 that receives the AC power and supplies the DC power, and the tester 100a, and supplies the DC power when the DC power supply 112 is not connected. ), A constant voltage circuit 116 that receives the DC power supplied from the DC power supply 112 and the battery 114 and supplies the DC power at a constant voltage, and a battery level detection circuit 118 that detects the remaining level of the battery 114 power. Include.
  • the DC power supply unit 110 may be provided as a power adapter having a power plug, for example, and the power plug may be inserted into a power jack 109 provided at one side of the housing 101 of the tester 100a. It may be provided in the form of a power supply circuit provided in the tester 100a and receiving AC power and supplying DC power.
  • the battery level detection circuit 118 provides the detection result to the controller 102 when the remaining amount of power of the battery 114 is detected at the low level.
  • the air supply unit 120 includes a motor driving circuit 122, a motor 124, and a pump 126 in order to supply air of a predetermined pressure to a conduit of the endoscope 20.
  • the motor 124 and the pump 126 may be provided in one piece.
  • the motor driving circuit 122 drives the motor 124 under the control of the controller 102.
  • the motor 124 operates the pump 126 in response to a constant pressure (eg, about 300 mm Hg).
  • the pump 126 supplies air of a predetermined pressure to the conduit of the endoscope 20 through the connection tube 160 and the connection adapter 170.
  • the air supply unit 120 includes a valve driving circuit 130 and a solenoid valve 132 to discharge the pressurized air from the pipe of the endoscope 20.
  • the valve driving circuit 130 opens and closes the solenoid valve 132 under the control of the controller 102.
  • the solenoid valve 132 is connected to the connecting tube 160.
  • the valve driving circuit 130 opens the solenoid valve 132 to discharge the air supplied to the pipe of the endoscope 20.
  • the valve driving circuit 132 may periodically open the solenoid valve 132 during the leak test time for repeated inspection in the automatic mode after the air of a constant pressure is supplied to the conduit.
  • the pressure sensor 140 measures pressure in real time or periodically from the conduit of the endoscope 20.
  • the pressure sensor 140 may be replaced by a sensor, for example, a flow sensor, capable of measuring a change in the flow rate of the air pressurized by the pipe of the endoscope 20.
  • the level of the measured pressure is variably adjusted by the signal processing circuit as shown in FIG. That is, the signal processing circuit of the pressure sensor 140 includes a plurality of resistors R1 to R6, one transistor Q1, and one capacitor C1.
  • the first and second resistors R1 and R2 receive a signal from the controller 102 to activate the pressure sensor 140 and turn on the transistor Q1.
  • the transistor Q1 When the transistor Q1 is turned on, a predetermined voltage is stored in the capacitor C1 and supplied to the input terminal VDD of the pressure sensor 140. Therefore, the pressure sensor 140 receives the control signal of the controller 102, measures the pressure in the pipe, and converts the measurement result into an electrical signal and outputs it.
  • the bridge resistance circuit consisting of the third to sixth resistors R3 to R6 is connected to the output terminal OUT of the pressure sensor 140. That is, the third and fourth resistors R3 and R4 and the fifth and sixth resistors R5 and R6 are connected in series, and the third and fourth resistors R3 and R4 and the fifth and sixth resistors are connected in series. Resistors R5 and R6 are connected in parallel between the output terminal OUT and ground.
  • the third resistor R3 is provided as a variable resistor, and the controller 102 adjusts the resistance value to adjust the measurement range error of the pressure sensor 140.
  • the controller 102 is also connected to the contacts between the fifth and sixth resistors R5 and R6, and outputs a signal corresponding to the pressure value measured by the pressure sensor 140 to the controller 102.
  • the pressure sensor 140 may adjust the error of the measurement range according to the type of the endoscope 20 by adjusting the resistance ratio of the third to sixth resistors R3 to R6.
  • the pressure sensor 140 measures a pressure of, for example, about 300 mmHg.
  • the measuring range error of the pressure sensor 140 is adjusted by adjusting the resistance value of the third resistor R3 by the controller 102.
  • the display unit 104 is provided with a liquid crystal display (LCD) device and displays various information.
  • the display unit 104 may further include a plurality of light emitting diodes (LEDs), and may indicate an operating state of the tester 100a.
  • the display unit 104 includes first display information 104a indicating an automatic mode operation state, second display information 104b indicating a manual mode operation state, and a battery remaining state.
  • the seventh display information 104g indicating the normal state without leakage as a result of the inspection, and the inspection result, the leakage
  • the eighth display information 104h indicating the leak occurrence state is displayed.
  • the first display information 104a indicates that the automatic mode is selected by the mode selection button 105 so that the endoscope leak inspection mode proceeds to the automatic mode
  • the second display information 104b indicates that the manual mode proceeds to the manual mode.
  • the second display information 104b is displayed so as to press the manual mode button 105 once, pressurize to maintain a constant pressure so that the user can find the leaked part, and press the manual mode button 105 once again. When pressed, it indicates the pressurized pressure is released.
  • the fourth display information 104d displays the state under leak inspection periodically, for example, at a predetermined time interval.
  • the fourth display information 104d further displays various error information generated during the leak check.
  • the error information includes information such as when the maximum allowable pressure value is not reached, the maximum pressure value is reached earlier than a predetermined time, or when a very large change in pressure is detected.
  • air may not be supplied to the pipe of the endoscope 20 as described above.
  • the pressure to be transmitted to the connector unit 70 is not transmitted even though the pressure is repeatedly applied several times through the connection adapter 160.
  • the controller 102 retries the air supply for the set number of times. However, if it is determined that the air supply is still not supplied even after retrying for the set number of times, the display unit 104 may display 'blocking' and the like as an expression representing an error as the fourth display information 104d. In this case, the alarm unit 108 will output the error state as an audio signal.
  • the sixth display information 104f displays the pressure value measured or the pressure value in mmHg units, for example.
  • the magnitude of this pressure can be expressed in various values depending on the product, such as the type of scope or model of the endoscope.
  • the seventh display information 104g displays information including a case where there is no leak or a very minute leak occurs after the leak inspection is completed.
  • the eighth display information 104h indicates a case where leakage occurs at least at one site after the completion of the leakage inspection.
  • the display unit 104 may display a power supply state, an error occurrence state, a test in progress state, and a battery low level state using a plurality of light emitting diodes (not shown).
  • the alarm unit 108 outputs the normal state or the leakage state of the endoscope 20 as an audio signal as the leak test is completed. For example, the alarm unit 108 outputs a warning sound once when the endoscope 20 is determined to be in a normal state, and outputs a warning sound three times when the endoscope 20 leaks. The alarm unit 108 also outputs another type of warning sound even when the battery level is low.
  • the tester 100a may further include a relief valve 170.
  • the relief valve 170 is provided, for example, between the connecting tube 150 and the pump 126.
  • the relief valve 170 is automatically opened when the pressure value pressurized from the pump 126 is supplied to the pipe of the endoscope 20 when an error occurs and the air pressure is greater than the maximum allowable pressure value, thereby discharging the air, thereby the tester 100a. And endoscope 20.
  • the endoscope leak inspection apparatus 100 of the present invention is mounted on the endoscope 20, it is possible to easily check whether the leakage occurs in the endoscope pipe. That is, the endoscope leakage inspection apparatus 100 proceeds with the leakage inspection using the automatic mode to determine whether the leakage of the endoscope 20, when the leakage occurs, the endoscope 20 equipped with the endoscope leakage inspection apparatus 100 To a treatment tank (not shown) in which water is accommodated, and by pressurizing air into a pipe of the endoscope 20 using the manual mode, the leakage portion of the endoscope 20 can be confirmed.
  • the endoscope leak inspection apparatus 100 of the present invention was mounted on the endoscope 20 of Olympus Medical Systems shown in FIG. That is, the connection tube 150 and the tester 100a are mounted using the connection adapter 160 mounted on the connector 70 of the endoscope 20.
  • endoscopy leak test apparatus 100 of the present invention is equipped with a connecting tube 150 and the tester 100a directly to the endoscope endoscope without a connection adapter endoscope You can also perform a leak test.
  • FIG. 7 is a flowchart showing the inspection procedure of the endoscope leak inspection apparatus according to the present invention.
  • step S200 the endoscope leakage inspection apparatus 100 is mounted to the air transmission and reception connection port 72 of the endoscope 20. At this time, the endoscope leakage inspection apparatus 100 is sealed and fixed to the air transmission and water connection port 72 by the connection adapter 160.
  • step S210 the power switch 106 is turned on to supply power to the tester 100a, and in step S220, one of the plurality of mode selection switches 105 is pressed to select the endoscope leakage test mode.
  • the endoscope leakage inspection mode is provided in an automatic mode and a manual mode.
  • the leakage of the endoscope is examined. That is, the air of a predetermined pressure is supplied to the pipe of the endoscope 20 for a predetermined time. This controls the motor drive circuit 122 by the controller 102 to drive the motor 124 and the pump 126. At this time, the predetermined pressure may have a variety of sizes depending on the endoscope 20, in this embodiment has a size of about 300mmHg.
  • step S240 When a predetermined time elapses in step S240, the pressure change is detected by measuring the pressure value in the conduit of the endoscope 20 using the pressure sensor 140.
  • step S250 it is determined whether the pressure is lowered.
  • this procedure proceeds to step S260 to display the leak occurrence state on the display unit 104, and to inform the alarm unit 108 that the leak has occurred. Outputs an audio signal.
  • step S270 a normal state indicating that the endoscope 20 has not leaked is displayed on the display unit 104, and the steady state is displayed by the alarm unit 108. Outputs an audio signal.
  • step S280 the solenoid valve 132 is opened to discharge the pressurized air. Thereafter, the endoscope leakage inspection apparatus 100 is separated from the endoscope 20 to clean and disinfect the endoscope 20 in a steady state.
  • FIG. 8 is a flowchart illustrating a leak inspection procedure in an automatic mode according to an embodiment of the present invention shown in FIG. 7. This procedure is a procedure that is processed when the leak inspection mode is selected as the automatic mode in step S220 of FIG.
  • step S300 air is pressurized into the pipeline of the endoscope 20 up to the pressure set in the controller 102.
  • step S310 the inside of the pipeline is stabilized to reach and maintain the set pressure for a predetermined time.
  • step S320 the pressure in the endoscope 20 pipe is periodically measured through the pressure sensor 140, and their average pressure values are calculated.
  • step S340 a deviation from the average pressure value is calculated.
  • step S350 It is determined whether the deviation calculated in step S350 is a value within an allowable error range. This is determined by comparing with the deviation set and stored in the controller 102. As a result of the determination, if the calculated deviation is a value within the tolerance range, the procedure proceeds to step S360 to inform the steady state through the display unit 104 and the alarm unit 108, and if the calculated deviation is not within the tolerance range. The flow proceeds to step S370 to notify the endoscope 20 of the leak occurrence state through the display unit 104 and the alarm unit 108.
  • the pressure is increased to the maximum pressure value set and stored in the controller 102 during the interval t1.
  • the section t1 takes about 5 seconds.
  • the pressure sensor 140 periodically measures a plurality of times in unit time, and transmits the pressure to the controller 102. Therefore, the controller 102 calculates an average pressure value of the pressure values measured a plurality of times in the section t2, and sets the average pressure value as a reference value indicating the steady state of the endoscope 20.
  • the stabilization time t2 takes about eight seconds and the unit time is set to 1/20 second.
  • the display unit 104 displays fourth display information 104d indicating that the inspection is in progress.
  • the fourth display information 104d is displayed with text such as 'leakage testing ...'.
  • the fourth display information 104d flashes during the inspection process.
  • the section t3 takes about 15 seconds, and when the section t3 elapses, the seventh or eighth display information 104g or 104h is displayed on the display unit 104 according to the determination result.
  • the endoscope leakage inspection method according to the automatic mode takes about 30 to 40 seconds for pressurization, stabilization, inspection, and discrimination, so that the state of the endoscope 20 can be quickly inspected.
  • the endoscope leakage inspection apparatus 100 is installed at any time before and after the procedure, so that the state of leakage can be quickly and easily identified.
  • FIG. 9 is a flowchart illustrating a leak inspection procedure in a manual mode according to an embodiment of the present invention shown in FIG. 7.
  • This procedure is a procedure to be processed when the leak inspection mode is selected as the manual mode in step S220 of FIG. In this case, when the leak occurrence state is confirmed, it is processed so that an operator can confirm a leak part correctly by a manual mode.
  • step S400 air is pressurized into a conduit of the endoscope 20 to a pressure set in the controller 102.
  • step S410 the pressure of the endoscope 20 pipe is measured through the pressure sensor 140, and in step S420, it is determined whether a leak occurs in the pipe of the endoscope 20. That is, when a leak occurs in the pipe of the endoscope 20, the treatment tank (not shown) in which the cleaning solution, rinse liquid or water is accommodated in the endoscope 20 while the endoscope leak inspection apparatus 100 is mounted in step S430. Press the manual mode button again in step S440 to pressurize air into the endoscope 20. At this time, the air is waited for a predetermined time (for example, about 5 to about 10 seconds) to pressurize air into the pipe of the endoscope 20.
  • a predetermined time for example, about 5 to about 10 seconds
  • step S450 Maintaining the pressurized pressure in step S450 to check the leakage portion of the endoscope 20. This is because the air is discharged from the leaking portion, because of this bubble is generated in the leaking portion, it is easy to check the leaking portion of the endoscope 20.
  • step S460 the manual mode button is pressed again in step S460 to stop the pressurization, and then in step S470, the solenoid valve 132 is opened to discharge the pressurized air to the conduit of the endoscope 20. Thereafter, the manufacturer or the like can request repair of the endoscope 20 in which the leaked part is generated, thereby preventing the endoscope from failing.

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Abstract

La présente invention concerne un appareil de détection des fuites pour un endoscope et un procédé de détection des fuites associé. L'appareil de détection des fuites pour un endoscope selon la présente invention est petit de façon à pouvoir être installé dans un endoscope ou séparément d'un endoscope. L'appareil de détection des fuites pour un endoscope est facile à transporter et à ranger, et il n'est pas coûteux par comparaison avec les machines à laver les endoscopes. L'appareil de détection des fuites pour un endoscope est installé dans un endoscope de façon à amener de l'air à une pression prédéterminée au tube de l'endoscope, et à surveiller la variation de pression dans le tube de l'endoscope en utilisant un capteur de pression, un capteur de débit, ou un dispositif analogue pour déterminer si une fuite est présente ou non dans l'endoscope. À cette fin, l'appareil de détection des fuites pour un endoscope peut réaliser le test de détection des fuites sur l'endoscope dans un mode automatique ou dans un mode manuel. L'appareil de détection des fuites pour un endoscope comprend une unité d'affichage et une unité d'alarme pour un affichage ou une indication externe des résultats du test. Comme le test de détection des fuites peut être réalisé rapidement et facilement sur l'endoscope, la présente invention permet d'éviter le dysfonctionnement d'un endoscope.
PCT/KR2012/002434 2011-04-01 2012-03-31 Appareil de détection des fuites pour un endoscope, et procédé de détection des fuites associé Ceased WO2012134247A2 (fr)

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KR1020110030186A KR101052893B1 (ko) 2011-04-01 2011-04-01 내시경 누수 검사 장치 및 이를 이용한 누수 검사 방법

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
GB2500998A (en) * 2012-03-19 2013-10-09 Gregory G Penza A Testing System And Method For Performing Integrity Testing In A Gas Piping System
CN106164639A (zh) * 2014-04-07 2016-11-23 德铃通信部品有限公司 内窥镜漏水自动检测装置及其检测方法
EP3163280A4 (fr) * 2014-09-18 2017-08-09 Takashin Co., Ltd. Dispositif et procédé d'inspection de trajet de fluide
WO2019083485A3 (fr) * 2017-10-24 2019-05-31 Sayar Muammer Machine de test de fuite électronique
CN110799079A (zh) * 2017-05-12 2020-02-14 奥林巴斯株式会社 无线内窥镜
CN114216652A (zh) * 2022-02-23 2022-03-22 南京市计量监督检测院 便携性医用内窥镜测试系统和测试方法

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Publication number Priority date Publication date Assignee Title
JPH09285442A (ja) * 1996-04-22 1997-11-04 Shimadzu Corp 内視鏡装置
JP3732379B2 (ja) * 2000-03-06 2006-01-05 株式会社ムトウテクノス 内視鏡の防水部分における漏洩検出方法とその装置。
JP3820168B2 (ja) * 2002-03-15 2006-09-13 オリンパス株式会社 リークテスタ
JP2005091042A (ja) * 2003-09-12 2005-04-07 Olympus Corp リークテスタ

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2500998A (en) * 2012-03-19 2013-10-09 Gregory G Penza A Testing System And Method For Performing Integrity Testing In A Gas Piping System
US9261426B2 (en) 2012-03-19 2016-02-16 Ulc Robotics, Inc. System and method for automated integrity testing
GB2500998B (en) * 2012-03-19 2019-01-16 Ulc Robotics Inc System and Method for Automated Integrity Testing
CN106164639A (zh) * 2014-04-07 2016-11-23 德铃通信部品有限公司 内窥镜漏水自动检测装置及其检测方法
EP3163280A4 (fr) * 2014-09-18 2017-08-09 Takashin Co., Ltd. Dispositif et procédé d'inspection de trajet de fluide
US10274394B2 (en) 2014-09-18 2019-04-30 Takashin Co., Ltd. Fluid path inspection device and fluid path inspection method
CN110799079A (zh) * 2017-05-12 2020-02-14 奥林巴斯株式会社 无线内窥镜
CN110799079B (zh) * 2017-05-12 2022-04-05 奥林巴斯株式会社 内窥镜和泄漏测试的通知方法
WO2019083485A3 (fr) * 2017-10-24 2019-05-31 Sayar Muammer Machine de test de fuite électronique
CN114216652A (zh) * 2022-02-23 2022-03-22 南京市计量监督检测院 便携性医用内窥镜测试系统和测试方法

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