WO2021117094A1 - Endoscope, système d'endoscope et procédé d'observation d'endoscope - Google Patents

Endoscope, système d'endoscope et procédé d'observation d'endoscope Download PDF

Info

Publication number
WO2021117094A1
WO2021117094A1 PCT/JP2019/048113 JP2019048113W WO2021117094A1 WO 2021117094 A1 WO2021117094 A1 WO 2021117094A1 JP 2019048113 W JP2019048113 W JP 2019048113W WO 2021117094 A1 WO2021117094 A1 WO 2021117094A1
Authority
WO
WIPO (PCT)
Prior art keywords
endoscope
electric cable
connector portion
pressure
connector
Prior art date
Application number
PCT/JP2019/048113
Other languages
English (en)
Japanese (ja)
Inventor
和也 雑賀
Original Assignee
オリンパス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
Priority to PCT/JP2019/048113 priority Critical patent/WO2021117094A1/fr
Publication of WO2021117094A1 publication Critical patent/WO2021117094A1/fr

Links

Images

Classifications

    • 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

Definitions

  • the present invention relates to an endoscope, an endoscope system, and an endoscope observation method.
  • Patent Document 1 discloses a technique of pressurizing the inside of an endoscope and inspecting whether or not the inside of the endoscope is kept airtight.
  • liquid may infiltrate the inside of the endoscope due to a hole in the covering part covering the insertion part of the endoscope. No configuration was considered to prevent liquid from entering the endoscope during endoscopic observation.
  • the present invention has been made in view of the above, and is an endoscope, an endoscope system, and an endoscope that can prevent liquid from entering the inside of the endoscope during endoscopic observation.
  • the purpose is to provide an observation method.
  • the endoscope is an image processing device that performs image processing on a connector portion of the endoscope and a signal input from the endoscope. It is provided near the connection part where the electric cable that electrically connects to and is connected, and when the electric cable is attached to the connector part, it is hermetically sealed, and when the electric cable is removed from the connector part, it is airtight. It includes a ventilation hole to be released, and a ventilation port that can be connected to a pressurizing device that pressurizes the pressure inside the endoscope to a state higher than the pressure outside the endoscope.
  • the endoscope according to one aspect of the present invention is provided at the tip of an insertion portion inserted into a subject, and includes a pressure sensor that detects the pressure inside the endoscope.
  • the endoscope includes an ultrasonic probe that transmits and receives ultrasonic waves.
  • the endoscope when the endoscope and the electric cable are attached to the connector portion, the endoscope is fitted into the ventilation hole portion and the ventilation hole portion is airtightly sealed. It is provided with an electric cable having a protrusion to be provided.
  • the endoscope system includes a pressurizing device connected to the vent, and the pressurizing device can detect the pressure inside the endoscope.
  • the insertion portion of the endoscope is inserted into the subject and pressurized from the vent of the endoscope to reduce the pressure inside the endoscope.
  • the pressure is maintained higher than the pressure outside the endoscope.
  • the pressure inside the endoscope is maintained higher than the pressure outside the endoscope by pressurizing from the vent of the endoscope.
  • the insertion part of the endoscope is inserted into the subject.
  • an electric cable for electrically connecting a connector portion of the endoscope and an image processing device that performs image processing on a signal input from the endoscope is used.
  • the ventilation hole portion of the endoscope is airtightly sealed, the insertion portion of the endoscope is inserted into the subject, and pressure is applied from the ventilation port of the endoscope. , The pressure inside the endoscope is maintained higher than the pressure outside the endoscope.
  • the pressure inside the endoscope is maintained higher than the pressure outside the endoscope by pressurizing from the vent of the endoscope.
  • the insertion part of the endoscope is inserted into the subject.
  • an electric cable for electrically connecting the endoscope and an image processing device that performs image processing on a signal input from the endoscope is connected.
  • the electric cable and the connector portion are the connector portions, and the ventilation holes that are airtightly sealed when the electric cable is attached to the connector portion and are released from the airtightness when the electric cable is removed from the connector portion are the electric cable and the connector portion.
  • An endoscope having a connector portion provided near the connection portion of the above was used.
  • an endoscope an endoscope system, and an endoscope observation method that can prevent liquid from entering the inside of the endoscope during endoscopic observation.
  • FIG. 1 is a diagram schematically showing an endoscope system including an ultrasonic endoscope according to an embodiment of the present invention.
  • FIG. 2 is an enlarged cross-sectional view of the vent metal shown in FIG.
  • FIG. 3 is an enlarged view of the connector portion and the electric cable shown in FIG.
  • FIG. 4 is an enlarged cross-sectional view of the connection portion between the connector portion and the electric cable.
  • FIG. 5 is a diagram showing a state in which the connector portion of FIG. 4 and the electric cable are connected.
  • FIG. 6 is a partial cross-sectional view of the tip of the balloon water pipe.
  • FIG. 7 is an enlarged view of the region A of FIG.
  • FIG. 8 is a partial cross-sectional view of the tip of the treatment tool insertion passage.
  • FIG. 1 is a diagram schematically showing an endoscope system including an ultrasonic endoscope according to an embodiment of the present invention.
  • FIG. 2 is an enlarged cross-sectional view of the vent metal shown in FIG.
  • FIG. 9 is a partial cross-sectional view of the tip of the light guide.
  • FIG. 10 is a partial cross-sectional view of the imaging unit.
  • FIG. 11 is a partial cross-sectional view of the connection portion between the operation portion and the universal cable.
  • FIG. 12 is a diagram showing the internal configuration of the connector portion.
  • FIG. 13 is a partial cross-sectional view of a connection portion between the universal cable and the connector portion.
  • FIG. 14 is an enlarged view of the area B of FIG.
  • FIG. 15 is an enlarged partial cross-sectional view of the lug terminal of FIG.
  • FIG. 16 is a cross-sectional view of the connector portion.
  • FIG. 17 is an enlarged view of the region C of FIG.
  • FIG. 18 is a diagram showing an internal configuration of the connector portion.
  • FIG. 19 is a partially enlarged view of the ultrasonic probe.
  • FIG. 20 is an overall view of the vibrator unit in which the ultrasonic probe is located at the tip.
  • FIG. 21 is a partial cross-sectional view of the cable portion shown in FIG.
  • FIG. 22 is an enlarged view of the connection portion.
  • FIG. 23 is a partial cross-sectional view of the tip end portion of the oscillator unit shown in FIG.
  • FIG. 24 is a partial cross-sectional view of the ultrasonic probe.
  • FIG. 1 is a diagram schematically showing an endoscope system including an ultrasonic endoscope according to an embodiment of the present invention.
  • the endoscope system 1 shown in the figure is a system for performing ultrasonic diagnosis in a subject such as a person using an ultrasonic endoscope.
  • the endoscope system 1 includes an ultrasonic endoscope 2, an ultrasonic observation device 3, an endoscope observation device 4, a display device 5, an electric cable 6, and pressurization.
  • the device 7 is provided.
  • the ultrasonic endoscope 2 has a function as an endoscope according to the present invention.
  • the ultrasonic endoscope 2 allows a part of the ultrasonic endoscope 2 to be inserted into the subject, transmits an ultrasonic pulse toward the body wall in the subject, and receives an ultrasonic echo reflected by the subject. It has a function to output an echo signal and a function to image the inside of a subject and output an image signal.
  • the detailed configuration of the ultrasonic endoscope 2 will be described later.
  • the ultrasonic observation device 3 has a function as an image processing device according to the present invention.
  • the ultrasonic observation device 3 is electrically connected to the ultrasonic endoscope 2 via an electric cable 6, outputs a pulse signal to the ultrasonic endoscope 2 via the electric cable 6, and ultrasonic waves.
  • An echo signal is input from the endoscope 2. Then, the ultrasonic observation device 3 performs predetermined image processing on the echo signal to generate an ultrasonic image.
  • a connector portion 24, which will be described later, of the ultrasonic endoscope 2 is detachably connected to the endoscope observation device 4.
  • the endoscope observation device 4 includes a video processor 41 and a light source device 42.
  • the video processor 41 inputs an image signal from the ultrasonic endoscope 2 via the connector unit 24. Then, the video processor 41 performs a predetermined process on the image signal to generate an endoscopic image.
  • the light source device 42 supplies the ultrasonic endoscope 2 with illumination light that illuminates the inside of the subject via the connector portion 24.
  • the display device 5 is configured by using a liquid crystal or an organic EL (Electro Luminescence), and is an ultrasonic image generated by the ultrasonic observation device 3, an endoscopic image generated by the endoscopic observation device 4, or the like. Is displayed.
  • a liquid crystal or an organic EL Electro Luminescence
  • the electric cable 6 electrically connects the connector portion 24 of the ultrasonic endoscope 2 and the ultrasonic observation device 3 that performs image processing on the signal input from the ultrasonic endoscope 2.
  • the pressurizing device 7 is connected to the connector portion 24 to pressurize the inside of the ultrasonic endoscope 2.
  • the gas introduced by the pressurizing device 7 into the ultrasonic endoscope 2 is, for example, air, but carbon dioxide may also be used. When carbon dioxide is introduced, it is possible to prevent the flammable gas in the subject from burning when carbon dioxide flows out from the ultrasonic endoscope 2 into the subject.
  • the ultrasonic endoscope 2 includes an insertion portion 21, an operation portion 22, a universal cable 23, and a connector portion 24.
  • the "tip side” described below means the tip side of the insertion portion 21 (the tip side in the insertion direction into the subject). Further, the “base end side” described below means the connector portion 24 side.
  • the insertion portion 21 is a portion to be inserted into the subject.
  • the insertion portion 21 is covered with a covering portion made of rubber or the like, and the inside is kept airtight.
  • the insertion portion 21 is provided on the tip end side, and is provided in series with the ultrasonic probe 211 for transmitting and receiving ultrasonic waves and the base end side of the ultrasonic probe 211. It includes a member 212, a curved portion 213 that is connected to the base end side of the rigid member 212 and is bendable, and a flexible tube portion 214 that is connected to the base end side of the curved portion 213 and has flexibility.
  • the ultrasonic probe 211 has a transducer portion in which a plurality of ultrasonic transducers are regularly arranged, transmits ultrasonic waves to a subject, receives ultrasonic waves reflected by the subject, and echoes. Output a signal.
  • the rigid member 212 is a rigid member made of a metal material or a resin material.
  • the operation unit 22 is connected to the base end side of the insertion unit 21 and is a part that receives various operations from a doctor or the like. As shown in FIG. 1, the operation unit 22 includes a bending knob 221 for bending the bending portion 213, a plurality of operating members 222 for performing various operations, and a treatment tool insertion port 223 for inserting the treatment tool. And.
  • the universal cable 23 is a cable extending from the operation unit 22 and provided with a light guide for transmitting illumination light supplied from the light source device 42 and a plurality of signal cables for transmitting pulse signals, echo signals, and image signals. is there.
  • the connector portion 24 is provided at the end of the universal cable 23.
  • the connector portion 24 includes an ultrasonic connector 241 to which the electric cable 6 is connected, and a plug portion 242 that is inserted into the endoscope observation device 4 and is connected to the video processor 41 and the light source device 42.
  • the plug portion 242 is provided with a plurality of electrical contacts and a light guide base 243.
  • the plurality of electrical contacts are portions that are electrically connected to the video processor 41 when the connector portion 24 is inserted into the endoscopic observation device 4.
  • the light guide base 243 is a portion that optically connects the light guide and the light source device 42 when the incident end side of the light guide described above is inserted and the connector portion 24 is inserted into the endoscope observation device 4. Is.
  • the connector portion 24 is connected to a ventilation port 244 to which the pressurizing device 7 is connected, a pressurizing port 245 and a water supply port 246 to which an external water supply tank is connected, and a suction port to which an external suction pump is connected.
  • a base 247 and a base are provided.
  • the vent 244 can be connected to a pressurizing device 7 that pressurizes the pressure inside the ultrasonic endoscope 2 to a state higher than the pressure outside the ultrasonic endoscope 2.
  • FIG. 2 is an enlarged cross-sectional view of the vent metal shown in FIG. As shown in FIG. 2, the vent 244 communicates with the inside of the housing 248 of the connector portion 24.
  • pressurization is performed from the vent metal 244 by the pressurizing device 7, the entire pressure is applied to the tip of the insertion portion 21 through the connector portion 24. That is, when pressurization is performed from the vent metal 244 by the pressurizing device 7, the entire ultrasonic endoscope 2 including the insertion portion 21, the operation portion 22, the universal cable 23, and the connector portion 24 is pressurized.
  • FIG. 3 is an enlarged view of the connector portion and the electric cable shown in FIG.
  • FIG. 4 is an enlarged cross-sectional view of the connection portion between the connector portion and the electric cable.
  • a ventilation hole 2411 is provided near the connection portion to which the electric cable 6 of the connector portion 24 is connected.
  • the electric cable 6 includes a protrusion 61.
  • FIG. 5 is a diagram showing a state in which the connector portion of FIG. 4 and the electric cable are connected. As shown in FIG. 5, the ventilation hole portion 2411 is hermetically sealed when the electric cable 6 is attached to the connector portion 24, and as shown in FIG. 4, the airtightness is released when the electric cable 6 is removed from the connector portion 24. Will be done.
  • the protrusion 61 fits into the ventilation hole 2411 when the electric cable 6 is attached to the connector 24, and airtightly seals the ventilation hole 2411.
  • the insertion portion 21 of the ultrasonic endoscope 2 is inserted into the subject.
  • the pressurizing device 7 is connected to the vent 244 provided in the connector portion 24 of the ultrasonic endoscope 2 to pressurize the inside of the ultrasonic endoscope 2. Then, the pressure inside the ultrasonic endoscope 2 becomes higher than the pressure outside the ultrasonic endoscope 2. Then, while maintaining this state, endoscopic observation is performed.
  • the inside of the ultrasonic endoscope 2 is added. Since the pressure is applied, the liquid is prevented from entering the inside of the ultrasonic endoscope 2. Therefore, it is prevented that the internal parts of the ultrasonic endoscope 2 get wet with the liquid and break down.
  • the pressure device 7 is connected to the vent 244 provided in the connector portion 24 of the ultrasonic endoscope 2 to pressurize the inside of the ultrasonic endoscope 2, and the pressure inside the ultrasonic endoscope 2 is increased.
  • the pressure may be higher than the pressure outside the ultrasonic endoscope 2, and then the insertion portion 21 of the ultrasonic endoscope 2 may be inserted into the subject. In this case, when the insertion portion 21 of the ultrasonic endoscope 2 is inserted into the subject, even if there is a hole in the covering portion covering the insertion portion 21, the inside of the ultrasonic endoscope 2 is pressurized. Therefore, it is possible to prevent the liquid from entering the inside of the ultrasonic endoscope 2.
  • the pressurizing device 7 may be able to detect the pressure inside the ultrasonic endoscope 2. In this case, by monitoring the pressure inside the ultrasonic endoscope 2, it is possible to detect at an early stage that a hole is formed in the covering portion during the endoscopic observation.
  • a pressure sensor for detecting the pressure inside the ultrasonic endoscope 2 may be provided at the tip of the insertion portion 21. Even in this case, by monitoring the pressure inside the ultrasonic endoscope 2, it is possible to detect at an early stage that a hole is formed in the covering portion during the endoscopic observation. Further, when a pressure sensor is provided at the tip of the insertion portion 21, a change in pressure due to a temperature change or a shape change of the insertion portion 21 can be detected, so that a hole is formed in the covering portion more accurately during endoscopic observation. It can detect that it is vacant.
  • the pressure sensor is preferably arranged inside the curved portion 213, which is most likely to have a hole in the covering portion in the insertion portion 21.
  • FIG. 6 is a partial cross-sectional view of the tip of the balloon water pipe.
  • the balloon water supply line mouthpiece 1002 is fixed to the rigid member 212 by adhesion or the like.
  • the balloon water supply tube 1003 is connected to the base end side of the balloon water supply line mouthpiece 1002.
  • the balloon water supply tube 1003 is fixed to the balloon water supply pipe line mouthpiece 1002 by tying the balloon water supply tube 1003 with a thread from the outside of the balloon water supply tube 1003 at the fixing portion 1004.
  • FIG. 7 is an enlarged view of the area A of FIG.
  • a scribing line 1002a is provided on the outer circumference of the balloon water pipe line mouthpiece 1002. Then, when the balloon water supply tube 1003 is fixed to the balloon water supply pipe line mouthpiece 1002, the alignment is performed by aligning the tube tip 1003a with the scribe line 1002a. By accurately aligning the balloon water pipe passage base 1002 and the balloon water pipe 1003, it is possible to prevent the balloon water pipe 1003 from interfering with other tubes or the like.
  • FIG. 8 is a partial cross-sectional view of the tip of the treatment tool insertion passage.
  • the treatment tool insertion passage mouthpiece 1010 is fixed to the rigid member 212 by adhesion or the like, and the treatment tool insertion passage mouthpiece 1010 is fixed.
  • a treatment tool insertion tube 1011 is connected to the base end side of the device.
  • a flat coil 1012 is wound around the outer circumference of the treatment tool insertion tube 1011 to prevent the treatment tool insertion tube 1011 from being damaged due to buckling or the like when a hard treatment tool is inserted.
  • the treatment tool insertion tube 1011 is fixed to the treatment tool insertion tube mouthpiece 1010 by tying the treatment tool insertion tube 1011 with a thread from the outside of the treatment tool insertion tube 1011 at the fixing portion 1014. Since the fixing portion 1014 is arranged in the thin portion 1010a of the treatment tool insertion tube mouthpiece 1010, the diameter of the insertion part 21 can be reduced, and the treatment tool insertion tube 1011 can be used for the treatment tool insertion tube mouthpiece 1010. It is prevented from falling out of.
  • the connection portion between the treatment tool insertion tube mouthpiece 1010 and the treatment tool insertion tube 1011 is covered with a covering portion 1013.
  • FIG. 9 is a partial cross-sectional view of the tip of the light guide.
  • the light guide 1020 is inserted into the rigid member 212, and the illumination light is emitted from the tip of the insertion portion 21 into the subject. Irradiate to.
  • a light guide base 1021 is fixed to the rigid member 212 by adhesion or the like, and a light guide tube 1022 is connected to the base end side of the light guide base 1021. The tip of the light guide tube 1022 is cut diagonally to reduce the diameter.
  • the light guide tube 1022 is fixed to the light guide base 1021 by tying the light guide tube 1022 from the outside of the light guide tube 1022 with a thread at the fixing portion 1023.
  • the knot 1023a is provided on the opposite side of the air supply water supply line 1024, and the knot 1023a and the air supply water supply line 1024 are prevented from interfering with each other.
  • FIG. 10 is a partial cross-sectional view of the imaging unit.
  • the imaging unit captures images of the condenser lens 1030 arranged at the tip, the lens frame 1031 holding the condenser lens 1030, and the light condensed by the condenser lens 1030. It includes a lens unit 1032 that forms an image on a surface, an imaging unit 1033 having an imaging element that images a subject image, and a holder 1034 that holds the imaging unit 1033.
  • the lens frame 1031 is provided with a scribing line 1031a for distinguishing it from similar parts.
  • the holder 1034 is formed with an index 1034a indicating the upward direction of FIG.
  • the index 1034a is oval when viewed from above, but the shape is not particularly limited.
  • FIG. 11 is a partial cross-sectional view of the connection portion between the operation portion and the universal cable.
  • FIG. 13 is a partial cross-sectional view of the connection portion between the universal cable and the connector portion, and
  • FIG. 14 is an enlarged view of the region B of FIG.
  • the universal cable 23 has a serpentine flex 1041 and a blade 1042 provided on the outer periphery of the serpentine flex 1041, and solders or brazes a certain range from both ends of the blade 1042. It is electrically and mechanically integrated and has improved quality. Further, in this high quality state, one end is inserted into the base 1040 and the other end is inserted into the connector base 1070 until they abut, and they are adhesively fixed.
  • the base 1040 and the connector base 1070 are provided with fingers 1043a and 1043b for ensuring conductivity between the serpentine flex 1041 and the blade 1042 as EMC and noise countermeasures.
  • the connection portion between the flexible pipe portion 214 and the operation portion 22 can have the same configuration.
  • the suction tube 1050 communicating with the suction base 247 shown in FIG. 11 is a coil-wound Teflon (registered trademark) tube around which a coil 1051 is wound in order to prevent buckling and the like.
  • FIG. 12 is a diagram showing the internal configuration of the connector portion. As shown in FIG. 12, various cables are wrapped with a tube 1060 or a tape 1061 to protect the inside of the connector portion 24. As a result, these cables are prevented from coming into contact with the shield 1062 and being damaged.
  • the board shield 1066 is fixed by four screws 1067.
  • the connector base portion 1070 shown in FIG. 14 is integrally configured. Assembling time can be shortened by integrally configuring the portion that was conventionally configured by combining two parts.
  • FIG. 15 is an enlarged partial cross-sectional view of the lug terminal of FIG.
  • the lug terminal 1064 electrically connected to the wiring 1063 is fixed to the connector portion main body 1080 by a screw 1065.
  • a groove portion 1080a is formed in the connector portion main body 1080.
  • FIG. 16 is a cross-sectional view of the connector portion.
  • FIG. 17 is an enlarged view of the region C of FIG. As shown in FIG. 17, in the suction base 247, the end portion of the base 1091 connected to the suction tube 1090 extends to the open end of the suction base 247. As a result, the joint portion between the base 1091 and the joint portion 1092 is prevented from being exposed on the inner surface of the suction base 247.
  • FIG. 18 is a diagram showing the internal configuration of the connector portion. As shown in FIG. 18, in a portion where the US cable 1100 connecting the electric cable 6 and the ultrasonic probe 211 is housed in the connector portion 24, a bottom plate portion 1101 is provided on the bottom surface of the US cable 1100. The bottom plate portion 1101 prevents the US cable 1100 from coming into contact with other pipelines and damaging the US cable 1100.
  • FIG. 19 is a partially enlarged view of the ultrasonic probe. As shown in FIG. 19, the signal substrate 1111 is provided so as to match the spacing and width of the piezoelectric elements 1110. As a result, wiring defects are prevented from occurring due to pitch deviation.
  • the piezoelectric element 1110 is composed of two sub-elements 1110a and sub-elements 1110b in the longitudinal direction.
  • the signal board 1111 includes a sub-signal board 1111a and a sub-signal board 1111b that correspond one-to-one with the sub-element 1110a and the sub-element 1110b.
  • the surface 1127a of the backing material 1127 was coated with an epoxy resin containing silica to improve the durability of the backing material 1127 to chemicals and gases.
  • an epoxy resin containing silica is used as an adhesive between the first acoustic matching layer 1128 and the signal substrate 1111 and between the piezoelectric element 1110 and the signal substrate 1111 to improve durability against chemicals and gases. I let you.
  • FIG. 20 is an overall view of the vibrator unit in which the ultrasonic probe is located at the tip.
  • FIG. 21 is a partial cross-sectional view of the cable portion shown in FIG. As shown in FIG. 21, in the cable portion 1120, the shield 1122 is covered with the outer skin 1123, the outer skin 1123 is covered with the pressure-resistant heat-shrinkable tube 1124, and the pressure-resistant heat-shrinkable tube 1124 is covered with the ultra-thin heat-shrinkable tube 1125. By covering the pressure-resistant heat-shrinkable tube 1124 with the ultra-thin heat-shrinkable tube 1125 over the entire length of the cable portion 1120, scratches are prevented.
  • the ultrathin heat shrinkable tube 1125 is made of, for example, low density polyethylene and has a thickness of, for example, 0.05 to 0.15 mm.
  • the cable portion 1120 is annealed before assembly. This is to prevent the exodermis 1123 from shrinking after assembly.
  • the annealing temperature is, for example, 50 to 150 ° C.
  • the outer skin 1123 of the cable portion 1120 is covered with an ultra-thin heat-shrinkable tube (not shown) over the entire length. Covering with this ultra-thin heat shrinkage prevents the exodermis 1123 from shrinking.
  • FIG. 22 is an enlarged view of the connection portion.
  • the connecting portion 1121 is formed by an FPC that can be bent from the center.
  • FIG. 23 is a partial cross-sectional view of the tip end portion of the oscillator unit shown in FIG. As shown in FIG. 23, the tip end portion 1122a of the shield 1122 is housed so as to cover the coaxial line inside the tubular member 1126. As a result, the noise resistance of the ultrasonic probe 211 has been improved.
  • FIG. 24 is a partial cross-sectional view of the ultrasonic probe.
  • the outer periphery of the plurality of coaxial wires 1131 connected to the plurality of piezoelectric elements 1110 is covered with an ultrathin heat shrinkable tube 1129.
  • an ultrathin heat shrinkable tube 1129 Conventionally, a tape is wound around the outer circumference of the coaxial wire 1131, but by using the ultra-thin heat-shrinkable tube 1129, the labor of winding the tape can be reduced.
  • the outer circumference of the ultrathin heat shrinkable tube 1129 is covered with a shield 1122, and the adhesive 1130 is applied to the tip of the shield 1122 over the entire circumference. As a result, the shield 1122 is prevented from fraying and spreading.
  • the ultrasonic probe 211 is housed after being rotated once (360 °) or more when it is housed in the rigid member 212 at the tip of the insertion portion 21.
  • the coaxial wire 1131 is twisted, and the durability of the coaxial wire 1131 against bending and twisting operations can be improved.
  • each coaxial wire 1131 is made of PFA (fluororesin). As a result, it is possible to prevent the outer skin from melting when soldering the connection portion between the coaxial wire 1131 and the piezoelectric element 1110. Further, since the outer skin is made of PFA, the slidability of the coaxial wire 1131 is improved, so that it is not necessary to apply oil for ensuring the slidability to the outer periphery of the coaxial wire 1131, and the workability is improved.
  • PFA fluororesin
  • the tubular member 1126 has a function of holding the proximal end side of the piezoelectric element 1110 and a function of protecting the coaxial wire 1131 inserted inside. Conventionally, these have been composed of two parts. Therefore, it is difficult to secure electrical insulation at the joint portion of the two parts. By integrally configuring, the electrical insulation was improved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Dans cet endoscope, une partie d'insertion de celui-ci est insérée chez un sujet tandis qu'une pression est appliquée à partir d'un accessoire de ventilation disposé dans une partie de raccord de l'endoscope afin de maintenir la pression à l'intérieur de l'endoscope à une pression supérieure à celle à l'extérieur de l'endoscope. Ceci permet de proposer un endoscope avec lequel il est possible d'empêcher le liquide de pénétrer à l'intérieur de l'endoscope pendant une observation endoscopique. De préférence, un capteur de pression est fourni, qui est disposé au niveau de la pointe de la partie d'insertion insérée chez le sujet et qui détecte la pression à l'intérieur de l'endoscope. De préférence, une sonde à ultrasons est fournie, qui émet et reçoit des ondes ultrasonores.
PCT/JP2019/048113 2019-12-09 2019-12-09 Endoscope, système d'endoscope et procédé d'observation d'endoscope WO2021117094A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/048113 WO2021117094A1 (fr) 2019-12-09 2019-12-09 Endoscope, système d'endoscope et procédé d'observation d'endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/048113 WO2021117094A1 (fr) 2019-12-09 2019-12-09 Endoscope, système d'endoscope et procédé d'observation d'endoscope

Publications (1)

Publication Number Publication Date
WO2021117094A1 true WO2021117094A1 (fr) 2021-06-17

Family

ID=76328916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/048113 WO2021117094A1 (fr) 2019-12-09 2019-12-09 Endoscope, système d'endoscope et procédé d'observation d'endoscope

Country Status (1)

Country Link
WO (1) WO2021117094A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5754401A (ja) * 1980-09-17 1982-03-31 Mitsubishi Electric Corp Koshuharohaki
US5689734A (en) * 1996-08-26 1997-11-18 Westinghouse Electric Corporation Pressurized camera system
JPH10286223A (ja) * 1997-04-15 1998-10-27 Olympus Optical Co Ltd 内視鏡システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5754401A (ja) * 1980-09-17 1982-03-31 Mitsubishi Electric Corp Koshuharohaki
US5689734A (en) * 1996-08-26 1997-11-18 Westinghouse Electric Corporation Pressurized camera system
JPH10286223A (ja) * 1997-04-15 1998-10-27 Olympus Optical Co Ltd 内視鏡システム

Similar Documents

Publication Publication Date Title
US20090177038A1 (en) Electronic endoscope
US11103220B2 (en) Ultrasonic endoscope
US9050052B2 (en) Ultrasound endoscope
EP2740411A1 (fr) Endoscope ultrasonore
US11202620B2 (en) Ultrasonic endoscope
US9173636B2 (en) Ultrasound probe
JPH11225947A (ja) 内視鏡
EP2368489A1 (fr) Unité d'imagerie et endoscope
JP6033509B1 (ja) 超音波プローブ
WO2021117094A1 (fr) Endoscope, système d'endoscope et procédé d'observation d'endoscope
JP3586180B2 (ja) 内視鏡形状検出プローブ
US20200029791A1 (en) Endoscope
US11944496B2 (en) Ultrasound endoscope
US20180271490A1 (en) Ultrasound transducer unit, ultrasound probe, and method of producing ultrasound transducer unit
JP3147312B2 (ja) 内視鏡
JP2614650B2 (ja) 内視鏡
US20170290494A1 (en) Endoscope
WO2022215208A1 (fr) Sonde à ultrasons, unité de transducteur à ultrasons et endoscope à ultrasons
WO2024013822A1 (fr) Endoscope, élément câble et procédé de production d'endoscope
JP3394710B2 (ja) 内視鏡
JP2000166928A (ja) 超音波内視鏡
JPS61244320A (ja) 内視鏡
JP4488203B2 (ja) 超音波内視鏡
JP2023128309A (ja) 内視鏡
JP2022124502A (ja) 超音波内視鏡

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19955465

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19955465

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP