WO2017150461A1 - Unité de sonde à ultrasons, endoscope à ultrasons, et procédé de fabrication d'unité de sonde à ultrasons - Google Patents

Unité de sonde à ultrasons, endoscope à ultrasons, et procédé de fabrication d'unité de sonde à ultrasons Download PDF

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Publication number
WO2017150461A1
WO2017150461A1 PCT/JP2017/007526 JP2017007526W WO2017150461A1 WO 2017150461 A1 WO2017150461 A1 WO 2017150461A1 JP 2017007526 W JP2017007526 W JP 2017007526W WO 2017150461 A1 WO2017150461 A1 WO 2017150461A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic
connection
cables
insulating
probe unit
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Application number
PCT/JP2017/007526
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English (en)
Japanese (ja)
Inventor
毅直 藤村
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オリンパス株式会社
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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 JP2018503302A priority Critical patent/JPWO2017150461A1/ja
Publication of WO2017150461A1 publication Critical patent/WO2017150461A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/13—Tomography
    • A61B8/14—Echo-tomography

Definitions

  • the present invention relates to an ultrasonic probe unit that includes an ultrasonic transducer that transmits ultrasonic waves to an observation target, receives ultrasonic echoes reflected from the observation target, and converts them into electrical signals.
  • the present invention relates to a provided ultrasonic endoscope and a method for manufacturing an ultrasonic probe unit.
  • Ultrasound may be applied to observe the characteristics of the biological tissue or material that is the object of observation.
  • the ultrasonic observation apparatus can acquire information on the characteristics of the observation target by performing predetermined signal processing on the ultrasonic echo received from the ultrasonic transducer that transmits and receives ultrasonic waves.
  • an ultrasonic endoscope in which an ultrasonic transducer is provided at the distal end of an insertion portion is used for diagnosis of a living body tissue or the like to which an ultrasonic wave is applied (see, for example, Patent Document 1).
  • the ultrasonic transducer provided at the distal end of the insertion portion and the ultrasonic observation device include a plurality of cables extending from the ultrasonic transducer, and the ultrasonic transducer side of each cable. It is provided on the opposite side, and is electrically connected via a substrate connected to a plurality of cables via a connector. That is, a cable having a connector for electrically connecting the ultrasonic transducer and the substrate is inserted into the ultrasonic endoscope.
  • the present invention has been made in view of the above, and provides an ultrasonic probe unit, an ultrasonic endoscope, and a method for manufacturing an ultrasonic probe unit that can suppress quality deterioration and can be easily manufactured.
  • the purpose is to do.
  • an ultrasonic probe unit is provided at the distal end of an insertion portion to be inserted into a subject, and an ultrasonic transducer that transmits and receives ultrasonic waves;
  • a cylindrical connector in which a plurality of cables extending from the ultrasonic transducer and conductive portions and insulating portions are alternately arranged, and the plurality of cables are inserted into the inside and the plurality of cables are different from each other.
  • a connector electrically connected to the conductive portion.
  • the ultrasonic probe unit according to the present invention is characterized in that, in the above invention, the plurality of connectors are arranged along a direction in which the plurality of cables extend.
  • the ultrasonic probe unit according to the present invention is characterized in that, in the above invention, a space is provided between the plurality of connectors.
  • the ultrasonic probe unit according to the present invention is characterized in that, in the above invention, the ultrasonic probe unit further includes a covering member that is provided between the plurality of connectors and covers the cable exposed between adjacent connectors. .
  • the ultrasonic probe unit according to the present invention is characterized in that, in the above-mentioned invention, the covering member is formed using a waterproof material and is in close contact with the connector.
  • the ultrasonic probe unit according to the present invention is the ultrasonic probe unit according to the above invention, wherein the cable has a core wire and a shield, and the connector includes a plurality of the conductive portions, the conductive portion provided at an end portion of the shield. And the remaining conductive portions are connected to different core wires.
  • An ultrasonic endoscope is provided at a distal end of an insertion portion inserted into a subject, and includes an ultrasonic transducer that transmits and receives ultrasonic waves, and a plurality of ultrasonic transducers extending from the ultrasonic transducer.
  • a cylindrical connector in which a cable, a conductive portion and an insulating portion are alternately arranged, and the plurality of cables are inserted into the inside, and the plurality of cables are electrically connected to different conductive portions.
  • An ultrasonic probe unit having a connector and a connection substrate having a plurality of receptors that can be electrically connected to the plurality of conductive portions.
  • the ultrasonic endoscope according to the present invention is characterized in that, in the above invention, the plurality of receptors are provided in the same number as the plurality of conductive portions.
  • the plurality of receptors are two-dimensionally or three-dimensionally arranged on the surface of the connection substrate.
  • an ultrasonic probe unit manufacturing method includes an ultrasonic transducer that is provided at a distal end of an insertion portion that is inserted into a subject and that transmits and receives ultrasonic waves, and a plurality of ultrasonic transducers extending from the ultrasonic transducer.
  • a method of manufacturing an ultrasonic probe unit comprising a cable and a connector for electrically connecting the plurality of cables, wherein the plurality of cables are inserted into a cylindrical conductive portion, and the plurality of cables are connected to each other.
  • FIG. 1 is a diagram schematically showing an endoscope system according to Embodiment 1 of the present invention.
  • FIG. 2 is a perspective view schematically showing the distal end configuration of the insertion portion of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 3 is an exploded perspective view schematically showing the distal end configuration of the insertion portion of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 4 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view schematically showing a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 1 is a diagram schematically showing an endoscope system according to Embodiment 1 of the present invention.
  • FIG. 2 is a perspective view schematically showing the distal end configuration of the insertion portion of the ultrasonic endoscope according to the
  • FIG. 6 is a partial cross-sectional view schematically showing a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 7 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 8 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 7 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 9 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 10 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 11 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 10 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 12 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 13 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram illustrating a method for manufacturing the ultrasonic endoscope.
  • FIG. 14 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the second embodiment of the present invention.
  • FIG. 15 is a diagram illustrating a method for manufacturing an ultrasonic endoscope according to the second embodiment of the present invention.
  • FIG. 16 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first modification of the second embodiment of the present invention.
  • FIG. 17 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the second modification of the second embodiment of the present invention.
  • FIG. 18 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the third embodiment of the present invention.
  • FIG. 19 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the fourth embodiment of the present invention.
  • FIG. 1 is a diagram schematically showing an endoscope system according to Embodiment 1 of the present invention.
  • the endoscope system 1 is a system that performs 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, and a light source device 6.
  • the ultrasonic endoscope 2 converts an electrical pulse signal received from the ultrasonic observation apparatus 3 into an ultrasonic pulse (acoustic pulse) and irradiates the subject with an ultrasonic transducer provided at the tip thereof. At the same time, the ultrasonic echo reflected from the subject is converted into an electrical echo signal expressed by a voltage change and output.
  • the ultrasonic endoscope 2 usually has an imaging optical system and an imaging device, and is inserted into the digestive tract (esophagus, stomach, duodenum, large intestine) or respiratory organ (trachea, bronchi) of the subject for digestion. It is possible to image tubes and respiratory organs. In addition, surrounding organs (pancreas, gallbladder, bile duct, biliary tract, lymph node, mediastinal organ, blood vessel, etc.) can be imaged using ultrasound. In addition, the ultrasonic endoscope 2 has a light guide that guides illumination light to be irradiated onto a subject during optical imaging. The light guide has a distal end portion that reaches the distal end of the insertion portion of the ultrasonic endoscope 2 into the subject, and a proximal end portion that is connected to the light source device 6 that generates illumination light.
  • the ultrasonic endoscope 2 includes an insertion unit 21, an operation unit 22, a universal cord 23, and a connection unit 24.
  • the insertion part 21 is a part inserted into the subject.
  • the insertion portion 21 is provided on the distal end side, and is a rigid distal end portion 211 that holds the ultrasonic transducer 7, and a bending portion that is connected to the proximal end side of the distal end portion 211 and can be bent.
  • 212 and a flexible tube portion 213 connected to the proximal end side of the bending portion 212 and having flexibility.
  • a light guide that transmits illumination light supplied from the light source device 6 and a plurality of signal cables that transmit various signals are routed inside the insertion portion 21.
  • a treatment instrument insertion passage for inserting the treatment instrument is formed.
  • the ultrasonic vibrator 7 may be a convex vibrator, a radial vibrator, or a linear vibrator.
  • the ultrasonic endoscope 2 is provided with a plurality of piezoelectric elements as an ultrasonic transducer 7 in an array, and the piezoelectric elements involved in transmission / reception are electronically switched, or the transmission / reception of each piezoelectric element is delayed. It is assumed that it is a convex type ultrasonic transducer that is scanned electronically by applying. The configuration of the ultrasonic transducer 7 will be described later.
  • FIG. 2 is a perspective view schematically showing the distal end configuration of the insertion portion of the ultrasonic endoscope according to the first embodiment.
  • the tip 211 has an ultrasonic transducer module 214 that holds the ultrasonic transducer 7, an illumination lens 215 a that collects the illumination light and emits it outside, and one of the imaging optical systems.
  • an endoscope module 215 having an objective lens 215b that takes in light from the outside.
  • the endoscope module 215 is formed with a treatment instrument protrusion 215 c that communicates with a treatment instrument insertion passage formed in the insertion section 21 and projects the treatment instrument from the distal end of the insertion section 21.
  • the vicinity of the end connected to the treatment instrument protrusion 215c is inclined with respect to the longitudinal axis of the insertion portion 21, and the treatment instrument protrudes from the treatment instrument protrusion 215c in a direction inclined with respect to the longitudinal axis. It is provided to do.
  • the longitudinal axis here is an axis along the longitudinal direction of the insertion portion 21.
  • the longitudinal axis is an axis that forms a constant straight line.
  • the operation unit 22 is a part that is connected to the proximal end side of the insertion unit 21 and receives various operations from a doctor or the like. As shown in FIG. 1, the operation unit 22 includes a bending knob 221 for performing a bending operation on the bending unit 212 and a plurality of operation members 222 for performing various operations. In addition, the operation section 22 is formed with a treatment instrument insertion port 223 that communicates with the treatment instrument insertion path and allows the treatment instrument to be inserted into the treatment instrument insertion path.
  • the universal cord 23 is a cable that extends from the operation unit 22 and includes a plurality of signal cables that transmit various signals and an optical fiber that transmits illumination light supplied from the light source device 6.
  • the connecting portion 24 is provided at the tip of the universal cord 23.
  • the connecting portion 24 includes first to third connecting portions 241 to 243 to which the ultrasonic cable 31, the video cable 41, and the optical fiber cable 61 are connected.
  • the ultrasonic observation apparatus 3 is electrically connected to the ultrasonic endoscope 2 via the ultrasonic cable 31 (FIG. 1), and outputs a pulse signal to the ultrasonic endoscope 2 via the ultrasonic cable 31. At the same time, an echo signal is input from the ultrasonic endoscope 2. Then, the ultrasonic observation device 3 performs a predetermined process on the echo signal to generate an ultrasonic image.
  • the endoscope observation apparatus 4 is electrically connected to the ultrasonic endoscope 2 via a video cable 41 (FIG. 1) and inputs an image signal from the ultrasonic endoscope 2 via the video cable 41. . Then, the endoscope observation apparatus 4 performs a predetermined process on the image signal to generate an endoscope image.
  • the display device 5 is configured by using a liquid crystal or organic EL (Electro Luminescence), a projector, a CRT (Cathode Ray Tube), and the like, and an ultrasonic image generated by the ultrasonic observation device 3 or the endoscope observation device 4.
  • generated by are displayed.
  • the light source device 6 is connected to the ultrasonic endoscope 2 via the optical fiber cable 61 (FIG. 1), and supplies illumination light for illuminating the inside of the subject via the optical fiber cable 61 to the ultrasonic endoscope 2. To do.
  • FIG. 3 is an exploded perspective view schematically showing the distal end configuration of the insertion portion of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 4 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view schematically showing a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention.
  • the ultrasonic transducer module 214 is formed in the endoscope module 215 and has a fitting portion 214 a that can be fitted into a hole portion 215 d connected to the bending portion 212 or the flexible tube portion 213, and an ultrasonic vibration. And a holding part 214b for holding the child 7.
  • the ultrasonic transducer module 214 is attached to the endoscope module 215 by inserting the insertion portion 214a into the hole 215d, and constitutes the distal end portion 211.
  • the ultrasonic transducer module 214 is connected to the operation unit 22 via a multi-core coaxial cable 216 having a plurality of coaxial cables 216 a connected to one or a plurality of piezoelectric elements of the ultrasonic transducer 7. It is connected to a provided connection unit (a connection unit 100 described later). Thereby, the ultrasonic transducer 7 and the operation unit 22 are electrically connected.
  • Each coaxial cable 216a is connected to one of the first connection portion 217 and the second connection portion 218 connected to the connection unit 100 on the side opposite to the side connected to the ultrasonic transducer 7 (FIG. 4). reference).
  • a plurality (two in the first embodiment) of first connection portions 217 are provided for multi-core coaxial cable 216.
  • the second connection portion 218 is provided at the end of the multicore coaxial cable 216 opposite to the side connected to the ultrasonic transducer 7.
  • the first connection portion 217 and the second connection portion 218 function as connectors that are electrically connected to the connection unit, and are provided along the direction in which the multicore coaxial cable 216 (coaxial cable 216a) extends.
  • the ultrasonic transducer unit, the multi-core coaxial cable 216, the first connection portion 217, and the second connection portion 218 constitute an ultrasonic probe unit.
  • the coaxial cable 216a has a core wire jacket 300 provided on the outermost peripheral side, a shield 301 made of a conductive braided tube covered with the core wire jacket 300, and a shield 301. It has an inner skin 302 and a core wire 303 which is a signal line for transmitting a signal.
  • the first connection portion 217 has a hollow cylindrical shape that holds the shield 301 of a predetermined number (for example, six in the first embodiment) of the coaxial cables 216a among the plurality of coaxial cables 216a.
  • a predetermined number for example, six in the first embodiment
  • a plurality of hollow cylindrical core wire holding parts 2171 holding the core wire 303 of the coaxial cable 216a held by the shield holding part 2170, and between and adjacent to the shield holding part 2170 and the core wire holding part 2171.
  • a plurality of insulating parts 2172 provided between the core wire holding parts 2171 and having a hollow cylindrical shape having an insulating property.
  • the shield holding part 2170 is a cylindrical conductive part having conductivity.
  • the shield holding part 2170 has a main body part 2173 connected to the insulating part 2172, and an outer ring 2174 and an inner ring 2175 provided inside the main body part 2173.
  • the main body 2173 is formed, for example, by fitting a metal ring on the outer periphery of a hollow cylindrical member that is formed using resin and whose outer surface is covered with metal plating.
  • the outer ring 2174 is formed using a conductive material such as metal and has a hollow cylindrical shape.
  • the outer ring 2174 has an inner wall surface 2174a that forms a hollow space into which the inner ring 2175 can be fitted on the inner peripheral side, and a plurality of protrusions that can be deformed when the outer periphery is press-fitted into the inner wall surface 2173a of the main body 2173. It has an uneven shape.
  • the inner ring 2175 is formed using a conductive material such as metal and has a hollow cylindrical shape.
  • the inner ring 2175 has an inner wall surface 2175a that forms a hollow space through which the coaxial cable 216a can be inserted, and a groove 2175b that can accommodate the shield 301 is provided on the outer periphery.
  • the shield 301 is sandwiched between the outer ring 2174 and the inner ring 2175, or is held by a fixing member such as solder.
  • the core wire holding portion 2171 is a cylindrical conductive portion that is formed using a conductive material.
  • the core wire holding part 2171 has a hollow cylindrical shape, and holds one of the coaxial cables 216a through which the shield holding part 2170 is inserted.
  • the core wire holding portion 2171 includes an inner wall surface 2171a that forms a hollow space through which a plurality of coaxial cables 216a can be inserted, a core wire insertion portion 2171b that forms a hole having a diameter through which the core wire 303 can be inserted, and a core wire insertion portion.
  • the plurality of core wire holding portions 2171 hold the core wires 303 of the different coaxial cables 216a. Since the shield holding portion 2170 holds the shields 301 of the six coaxial cables 216a, in the first embodiment, six first connection portions 217 are provided.
  • the insulating portion 2172 is an insulating portion that is formed using an insulating material and has a hollow cylindrical shape.
  • the insulating portion 2172 has an inner wall surface 2172a that forms a hollow space through which the plurality of coaxial cables 216a can be inserted.
  • the insulating part 2172 may be formed by covering the outer surface of the main body part made of a conductive material with an insulating material.
  • the shield holding portion 2170, the core wire holding portion 2171, and the insulating portion 2172 have a stepped shape that can be fitted into each other at least at one end side.
  • the shield holding part 2170, the core wire holding part 2171 and the insulating part 2172 may be connected by fitting or may be fixed by a fixing member such as an adhesive. It is preferable to fix the connecting portion with an adhesive so as to obtain a waterproof effect.
  • the shield holding portion 2170, the core wire holding portion 2171 and the insulating portion 2172 form a continuous surface with the same diameter in the connected state. It will be described as having a cylindrical shape.
  • FIG. 6 is a partial cross-sectional view schematically showing a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention.
  • the second connection portion 218 includes a shield 301 of the remaining coaxial cables 216 a (three in the first embodiment) that have passed through the plurality of first connection portions 217 among the plurality of coaxial cables 216 a.
  • the shield holding part 2180 is a cylindrical conductive part having conductivity.
  • the shield holding portion 2180 is formed with three insertion holes 2180a through which the shield 301 can be inserted.
  • the core wire holding portion 2181 is a cylindrical conductive portion formed using a conductive material.
  • the core wire holding portion 2181 has a hollow cylindrical shape, and holds one of the plurality of coaxial cables 216a through which the shield holding portion 2180 is inserted.
  • the core wire holding portion 2181 includes an inner wall surface 2181a that forms a hollow space through which a plurality of coaxial cables 216a can be inserted, a core wire insertion portion 2181b that forms a hole having a diameter through which the core wire 303 can be inserted, and a core wire insertion portion.
  • a large-diameter portion 2181c which is provided on the opposite side of the core wire insertion side of the portion 2181b and communicates with the core wire insertion portion 2181b and forms a hollow space having a diameter larger than the diameter of the core wire insertion portion 2181b.
  • Core 303 after being inserted into the core insertion portion 2181B, in a state where the top is extended in the large diameter portion 2181C, are secured by solder S 2.
  • the core wire holding part 2182 is a cylindrical conductive part formed using a conductive material.
  • the core wire holding portion 2182 has a hollow cylindrical shape, and is one of the plurality of coaxial cables 216a through which the shield holding portion 2180 is inserted, and the coaxial cable 216a held by the core wire holding portion 2181 Holds different coaxial cables 216a.
  • the core wire holding portion 2182 like the core wire holding portion 2181, has an inner wall surface 2182a that forms a hollow space through which a plurality of coaxial cables 216a can be inserted, and a core wire that forms a hole having a diameter through which the core wire 303 can be inserted.
  • the core wire holding part 2183 is a cylindrical conductive part formed using a conductive material.
  • the core wire holding portion 2183 has a cylindrical shape, and is one of the plurality of coaxial cables 216a through which the shield holding portion 2180 is inserted, and the coaxial cable 216a held by the core wire holding portions 2181 and 2182. And holding a different coaxial cable 216a.
  • the core wire holding portion 2183 is provided on the opposite side of the core wire insertion portion 2183a from the core wire insertion portion 2183a that forms a hole having a diameter through which the core wire 303 can be inserted, and communicates with the core wire insertion portion 2183a.
  • the insulating portion 2184 is an insulating portion that is formed using an insulating material and has a hollow cylindrical shape.
  • the insulating portion 2184 has an inner wall surface 2184a that forms a hollow space through which the plurality of coaxial cables 216a can be inserted.
  • the insulating portion 2184 may be formed by covering the outer surface of the main body portion made of a conductive material with an insulating material.
  • the shield holding part 2180, the core wire holding parts 2181 to 2183, and the insulating part 2184 have a stepped shape that can be fitted into each other.
  • the shield holding part 2180, the core wire holding parts 2181 to 2183, and the insulating part 2184 may be connected by fitting, or may be fixed by a fixing member such as an adhesive. It is preferable to fix the connecting portion with an adhesive so as to obtain a waterproof effect.
  • the shield holding portion 2180, the core wire holding portions 2181 to 2183, and the insulating portion 2184 are connected to each other in a continuous surface having the same diameter. The description will be made assuming that it forms a columnar shape.
  • 7 and 8 are schematic views showing the configuration of the main part of the ultrasonic endoscope according to the first embodiment of the present invention, and are diagrams for explaining a method of manufacturing the ultrasonic endoscope. It is a figure explaining the method of connecting the multi-core coaxial cable 216 and the shield holding
  • the shield 301 When connecting the multi-core coaxial cable 216 and the shield holding portion 2170, first, the shield 301 is accommodated in the groove portion 2175b of the inner ring 2175 as shown in FIG. Similarly, after accommodating the shield 301 in each groove portion 2175b, the inner ring 2175 is covered with the outer ring 2174 and fixed (see FIG. 7).
  • the fixing between the inner ring 2175 and the outer ring 2174 may be performed by fitting, or may be performed by a fixing member such as an adhesive.
  • the shield 301, the inner ring 2175, and the outer ring 2174 are in contact with each other regardless of the above-described fitting or adhesion, and are electrically connected.
  • the outer ring 2174 holding the inner ring 2175 and the six coaxial cables 216a is press-fitted into the hollow space formed by the inner wall surface 2173a of the main body 2173.
  • the protrusion provided on the outer periphery of the outer ring 2174 is elastically deformed, and the outer ring 2174 is press-fitted into the main body 2173.
  • the insulating part 2172 is attached to the shield holding part 2170, and further the core wire holding part 2171 is attached to the insulating part 2172.
  • the insulating portion 2172 is attached to the shield holding portion 2170, the plurality of coaxial cables 216a that have passed through the shield holding portion 2170 pass through the hollow space formed by the inner wall surface 2172a of the insulating portion 2172.
  • the core wire 303 of one of the plurality of coaxial cables 216a that has passed through the insulating portion 2172 is inserted into the core wire insertion portion 2171b.
  • the end of the first connection portion 217 opposite to the insertion side of the multi-core coaxial cable 216 may be the insulating portion 2172 or the core wire holding portion 2171.
  • FIGS. 9 to 12 are schematic diagrams showing a configuration of a main part of the ultrasonic endoscope according to the first embodiment of the present invention, and are diagrams for explaining a method of manufacturing the ultrasonic endoscope. It is a figure explaining the method of connecting the multi-core coaxial cable 216 and the 2nd connection part 218.
  • the multicore coaxial cable 216 and the shield holding part 2180 are connected.
  • the shield 301 is accommodated in the insertion hole 2180 a of the shield holding portion 2180.
  • a fixing member such as solder S 4 or conductive adhesive to secure the shield 301 to the shield holding portion 2180 (see FIG. 10).
  • the insulating portion 2184 is attached to the shield holding portion 2180 (see FIG. 11), and further, the core wire holding portion 2181 is attached to the insulating portion 2184.
  • the plurality of coaxial cables 216a that have passed through the shield holding portion 2180 pass through the hollow space formed by the inner wall surface 2184a of the insulating portion 2184.
  • the core wire holding portion 2181 is attached to the insulating portion 2184, the core wire 303 of any one of the plurality of coaxial cables 216a that has passed through the insulating portion 2184 is inserted into the core wire insertion portion 2181b.
  • the plurality of first connection portions 217 and the second connection portions 218 are attached to the multi-core coaxial cable 216, and the core wires 303 of the plurality of coaxial cables 216a are connected inside the first connection portion 217 and the second connection portion 218.
  • the core wire 303 can be inserted into the insertion portion 21 without being exposed to the outside.
  • the 1st connection part 217 and the 2nd connection part 218 have comprised the column shape, respectively, compared with a rectangular board
  • the coaxial cable 216 can be prevented from being separated, and the coaxial cable 216 can be internally viewed. It can be smoothly inserted into the mirror 2 (insertion portion 21).
  • the plurality of coaxial cables 216a are inserted into the core wire holding portions 2171 and 2181 to 2183 which are conductive portions. Then, any one of the plurality of coaxial cables 216a is electrically connected to the core wire holding portions 2171, 2181 to 2183 (connection step). Thereafter, a plurality of coaxial cables 216a that have passed through the core wire holding portions 2171, 2181 to 2183 are inserted into the cylindrical insulating portions 2172 and 2184, and the insulating portions 2172 and 2184 are attached to the core wire holding portions 2171 and 2181 to 2183. (Insulating part mounting step).
  • connection step and insulating portion attachment step By alternately repeating these connection step and insulating portion attachment step, the first connection portion 217 and the second connection portion 218 that are connectors are formed (connector formation step).
  • the shield holding portions 2170 and 2180 may be formed before the connecting step and the insulating portion attaching step, or may be formed after the connecting step and the insulating portion attaching step.
  • FIG. 13 is a schematic diagram showing the configuration of the main part of the ultrasonic endoscope according to the first embodiment of the present invention, and is a diagram for explaining a method of manufacturing the ultrasonic endoscope, and shows the first connection 6 is a diagram for explaining a connection method for connecting a plurality of coaxial cables 216a to a connection unit 100 provided in an operation unit 22 via a part 217 and a second connection part 218.
  • connection unit 100 has a disk shape, and has connection substrates 101 to 103 connected to the first connection part 217 and the second connection part 218, respectively, on one surface.
  • connection unit 100 is electrically connected to a portion connected to the universal cord 23 on the surface opposite to the surface on which the connection substrates 101 to 103 are provided.
  • the connection substrate 101 includes a plurality of receptors 101a that are elastically deformable and have conductivity that can hold the first connection portion 217.
  • the receptor 101a has a U-shape formed by bending a band-shaped member, and in a state where a load other than gravity is not applied (natural state), the receptor 101a is a hollow space having a width smaller than the diameter formed by the outer periphery of the first connection portion 217. Is forming.
  • the receptor 101a preferably has a distal end portion on the insertion side curved in a manner opposite to the U-shaped curved manner in order to improve the insertability of the first connecting portion 217. .
  • connection substrate 101 is electrically connected to a wiring formed on the back surface of the connection unit 100 via a wiring connected to the receptor 101a or a through hole (not shown).
  • the number of receptors 101a is the same as the number of conductive parts of the first connection part 217 to be connected.
  • the connection board 102 includes a plurality of receptors 102 a that are elastically deformable and can hold the first connection part 217, as with the connection board 101.
  • the receptor 102a has a U-shape formed by bending a band-shaped member, and in a state where a load other than gravity is not applied (natural state), a hollow space having a width smaller than the diameter formed by the outer periphery of the first connection portion 217. Is forming.
  • the distal end portion on the insertion side is curved in a manner opposite to the U-shaped curved manner.
  • connection substrate 102 is electrically connected to a wiring formed on the back surface of the connection unit 100 via a wiring connected to the receptor 102a or a through hole (not shown).
  • the number of receptors 102a is the same as the number of conductive parts of the first connection part 217 to be connected.
  • the connection board 103 includes a plurality of receptors 103 a that are elastically deformable and have conductivity that can hold the second connection portion 218.
  • the receptor 103a has a U-shape formed by bending a band-shaped member, and in a state where a load other than gravity is not applied (natural state), a hollow space having a width smaller than the diameter formed by the outer periphery of the second connection portion 218. Is forming.
  • the receptor 103a preferably has a distal end portion on the insertion side curved in a manner opposite to the U-shaped curved manner in order to improve the insertability of the second connecting portion 218. .
  • connection substrate 103 is electrically connected to a wiring formed on the back surface of the connection unit 100 via a wiring connected to the receptor 103a or a through hole (not shown).
  • the receptor 103a is provided in the same number as the conductive part of the second connection part 218 to be connected.
  • a multi-core coaxial cable 216 including a plurality of first connection portions 217 and second connection portions 218 inserted into the insertion portion 21 from the distal end portion 211 side and extending from the operation portion 22 to the outside is connected to the connection unit 100.
  • the two first connection portions 217 shown in FIG. 13 are attached to the connection substrates 101 and 102 by being press-fitted and held in the receptors 101a and 102a.
  • the receptors 101a and 102a are held in contact with the outer circumferences of the shield holding part 2170 and the core wire holding part 2171 of the first connection part 217.
  • the some core wire 303 and the connection boards 101 and 102 are each electrically connected.
  • connection substrate 103 is attached to the connection substrate 103 by being press-fitted and held in the receptor 103a.
  • each receptor 103a is held in contact with the outer periphery of each of the core wire holding portions 2181 to 2183 of the second connection portion 218.
  • substrate 103 are each electrically connected.
  • the circuits that hold the receptors 101a to 103a that hold the shield holding portions 2170 and 2180 are connected to the ground.
  • the ultrasonic probe unit including the ultrasonic transducer 7, the ultrasonic transducer module 214, the multi-core coaxial cable 216, the first connection portion 217, and the second connection portion 218 includes: A multi-core coaxial cable 216 extending between the ultrasonic transducer 7 and a connection portion between the universal cord 23 of the operation unit 22 and a predetermined number of the multi-core coaxial cable 216 having a plurality of coaxial cables 216a.
  • the first connection portions 217 are spaced apart from each other and between the first connection portions 217 and the second connection portions 218, the first connection portions 217 and The degree of freedom of the multi-core coaxial cable 216 is maintained regardless of the arrangement of the second connection portion 218, and the multi-core coaxial cable 216 can be easily inserted into the insertion portion 21.
  • the first connection portion 217 and the second connection are provided by providing a space between the first connection portions 217 and between the first connection portion 217 and the second connection portion 218.
  • the degree of freedom of arrangement of the first connection portion 217 and the second connection portion 218 can be improved, and the arrangement of the connection substrates 101 to 103 in the connection unit 100 can be improved.
  • the degree of freedom of arrangement of the receptors 101a to 103a can be improved.
  • the receptors 101a to 103a can be two-dimensionally or three-dimensionally arranged according to the shape of the connection board and the space of the connection unit 100, and the operation unit including the connection unit 100 22 can be downsized.
  • connection boards 101 to 103 of the connection unit 100 are provided according to the first connection part 217 and the second connection part 218.
  • a single connection board may be used, and receptors 101a to 103a may be provided on this connection board.
  • the shape which the outer surface of the 1st connection part 217 and the 2nd connection part 218 makes was demonstrated as what is cylindrical, it is not restricted to this,
  • the shape which the outer edge of a cross section forms It may be a hollow prismatic shape having a polygonal shape or a cylindrical shape having an elliptical cross section.
  • FIG. 14 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the second embodiment of the present invention.
  • the first connecting portion 217A includes the shield holding portion 2170 and the plurality of core wire holding portions 2171 described above, between the shield holding portion 2170 and the core wire holding portion 2171, and between adjacent core wire holding portions 2171. And a plurality of insulating portions 2176 having a hollow cylindrical shape having insulating properties.
  • the insulating portion 2176 is formed using an insulating material and has a hollow cylindrical shape. Insulating portion 2176 has a diameter formed by the outer periphery larger than a diameter formed by the outer periphery of shield holding portion 2170 and core wire holding portion 2171. Insulating portion 2176 has an inner wall surface that forms a hollow space through which a plurality of coaxial cables 216a can be inserted. The insulating portion 2176 may be formed by covering the outer surface of the main body portion made of a conductive material with an insulating material.
  • the shield holding part 2170, the core wire holding part 2171, and the insulating part 2176 have a stepped shape that can be fitted into each other at least at one end side.
  • the shield holding part 2170, the core wire holding part 2171 and the insulating part 2176 may be connected by fitting, or may be fixed by a fixing member such as an adhesive. It is preferable to fix the connecting portion with an adhesive so as to obtain a waterproof effect.
  • the shield holding portion 2170, the core wire holding portion 2171 and the insulating portion 2176 are connected to each other with respect to the outer surfaces of the shield holding portion 2170 and the core wire holding portion 2171.
  • the insulating portion 2176 has a protruding shape.
  • FIG. 15 is a diagram for explaining a method of manufacturing an ultrasonic endoscope according to the second embodiment of the present invention, and is a diagram for explaining a configuration in which the first connection portion 217A shown in FIG. 14 is connected to the connection substrate 101A.
  • the connection substrate 101A includes a plurality of receptors 104 that are elastically deformable and have conductivity that can hold the first connection portion 217A.
  • the receptor 104 has a U-shape formed by bending a band-shaped member, and in a state where a load other than gravity is not applied (natural state), the shield holding portion 2170 of the first connection portion 217A.
  • maintenance part 2171 makes is formed.
  • the first connection portion 217A is attached to the connection substrate 101A by the shield holding portion 2170 and the core wire holding portion 2171 being press-fitted and held in the receptor 104.
  • the plurality of core wires 303 and the connection substrate 101A are electrically connected to each other.
  • the outer diameter of the insulating portion 2176 is large and the first connecting portion 217A has a stepped shape, the operator visually recognizes the position where the first connecting portion 217A is disposed on the receptor 104 during manufacturing. Therefore, it is possible to prevent the insulating portion 2176 from being attached to the receptor 104 by mistake. That is, the arrangement of the first connection portion 217A with respect to the connection substrate 101A can be more reliably positioned.
  • the circuit that holds the receptor 104 that holds the shield holding portion 2170 is connected to the ground.
  • the effects obtained by the first embodiment described above are obtained, and the outer diameter of the insulating portion 2176 is larger than the outer diameters of the shield holding portion 2170 and the core wire holding portion 2171. Since the outer surface of the first connection portion 217A is formed to have a concavo-convex shape, a mistake in attaching the first connection portion 217A to the receptor 104 can be suppressed.
  • the outer peripheral diameter of the insulating portion 2176 is larger than the outer peripheral diameters of the shield holding portion 2170 and the core wire holding portion 2171 so that the outer surface of the first connecting portion 217A has an uneven shape. Therefore, even if the first connection portion 217A is displaced in the arrangement direction of the receptor 104 (arrow Y in FIG. 15), the insulating portion 2176 is locked to the receptor 104, and thus the first connection portion 217A. Can be prevented from separating from the receptor 104.
  • FIG. 16 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the first modification of the second embodiment of the present invention.
  • the insulating portion 2176 having the same shape is provided, but it is not limited to the same shape.
  • the length (width) in the longitudinal direction of the first connecting portion 217B in the plurality of insulating portions (insulating portions 2176a to 2176c) is different from the first connecting portion 217B according to the first modification.
  • the insulating portions 2176a to 2176c are formed using an insulating material and have a hollow cylindrical shape. Insulating portions 2176a to 2176c have outer diameters larger than the outer diameters of shield holding portion 2170 and core wire holding portion 2171, and the width increases in the order of insulating portion 2176a, insulating portion 2176b, and insulating portion 2176c. (D 1 ⁇ d 2 ⁇ d 3 ). Insulating portions 2176a to 2176c have an inner wall surface that forms a hollow space into which a plurality of coaxial cables 216a can be inserted. The insulating portions 2176a to 2176c may be formed by covering the outer surface of the main body portion made of a conductive material with an insulating material.
  • the connection substrate 101B connected to the first connection part 217B includes a plurality of receptors 104 that are elastically deformable and have conductivity that can hold the first connection part 217B.
  • the receptor 104 has a U-shape formed by bending a band-shaped member, and in a state where a load other than gravity is not applied (natural state), the shield holding portion 2170 of the first connection portion 217B.
  • maintenance part 2171 makes is formed.
  • the receptors 104 are arranged at a pitch corresponding to the width of the insulating portions 2176a to 2176c.
  • the effects obtained by the second embodiment described above are obtained, and the widths of the insulating portions 2176a to 2176c are made different from each other. Therefore, the first connecting portion 217B with respect to the connecting substrate 101B
  • the insulating portions 2176a to 2176c and the receptor 104 interfere with each other. Therefore, reverse insertion is prevented, and the longitudinal position and orientation of the first connection portion 217B with respect to the connection substrate 101B are further increased. Positioning can be ensured.
  • FIG. 17 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the second modification of the second embodiment of the present invention.
  • the insulating portion 2176 having a hollow cylindrical shape is described as being provided, but the shape is not limited thereto.
  • the first connection portion 217C according to the second modification is formed by chamfering the end portions in the central axis direction of the plurality of insulating portions 2176d.
  • the insulating portion 2176d is formed using an insulating material and has a hollow cylindrical shape.
  • the insulating portion 2176d has an inner wall surface that forms a hollow space into which the plurality of coaxial cables 216a can be inserted.
  • the insulating portion 2176d has a diameter formed by the outer periphery larger than the diameter formed by the outer periphery of the shield holding portion 2170 and the core wire holding portion 2171, and the end portion (outer edge) in the central axis direction of the hollow cylinder is chamfered.
  • the insulating portion 2176d may be formed by covering the outer surface of the main body portion made of a conductive material with an insulating material.
  • the effects obtained by the second embodiment described above are obtained, and the end portion of the insulating portion 2176d is chamfered, so that the multi-core coaxial cable 216 including the first connection portion 217C is provided. Damage to the insertion portion 21 and the multi-core coaxial cable 216 when the cable is inserted into the insertion portion 21 can be more reliably suppressed.
  • the end portion of the insulating portion 2176d is chamfered as a configuration that more reliably suppresses damage to the insertion portion 21 and the multicore coaxial cable 216 when the multicore coaxial cable 216 is inserted into the insertion portion 21.
  • the insulating portion 2176 of the second embodiment may be formed by using a soft resin to suppress interference with the inside of the insertion portion 21.
  • the first connection unit 217 has been described as an example, but the present invention can also be applied to the second connection unit 218.
  • the diameter of the outer periphery of the insulating portion of the first and second connection portions may be larger than the diameter formed by the outer periphery of the shield holding portion 2170 and the core wire holding portion 2171, and any of the first and second connection portions
  • the diameter formed by the outer periphery of one of the insulating portions may be increased. If the diameter formed by the outer periphery of one of the first and second connecting portions is increased, the visibility when distinguishing the first and second connecting portions can be improved.
  • FIG. 18 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the third embodiment of the present invention.
  • a tube member 400 is provided in a portion where the coaxial cable 216a between the adjacent first connection portions 217 is exposed.
  • the tube member 400 is a covering member constituted by, for example, a heat shrinkable tube.
  • a convex portion 401 that protrudes in the form of a hollow column for attaching the tube member 400 is provided. It will be described as being.
  • the tube member 400 When connecting the first connection parts 217 to each other, for example, by providing the tube member 400 before thermal contraction so as to cover the outer periphery of the convex part 401, a plurality of coaxials exposed between the adjacent first connection parts 217 are provided. The outer periphery of the cable 216a is covered. Thereafter, the tube member 400 is disposed between the two convex portions 401 by thermally shrinking the tube member 400 and crimping the tube member 400 to the convex portion 401. Similarly, between the first connection part 217 and the second connection part 218, the outer periphery of the plurality of coaxial cables 216 a exposed therebetween is covered.
  • the tube member 400 may cover the coaxial cable 216 a exposed between the outer skin 304 of the multi-core coaxial cable 216 and the first connection portion 217. In this way, it is possible to cover all the coaxial cables 216 a exposed in the multicore coaxial cable 216 with the tube member 400.
  • the effects obtained by the first embodiment described above can be obtained, and the tube member 400 can be connected between the adjacent first connection portions 217 or between the first connection portion 217 and the second connection portion. Since the coaxial cable 216a exposed between the connection portion 218 and / or between the outer sheath 304 of the multi-core coaxial cable 216 and the first connection portion 217 is covered, it is coaxial with an external load or the like. Disconnection of the cable 216a can be suppressed.
  • FIG. 19 is a schematic diagram illustrating a configuration of a main part of the ultrasonic endoscope according to the fourth embodiment of the present invention. In the fourth embodiment as well, a description will be given assuming that a convex portion 401 that protrudes in the form of a hollow column for attaching the tube member 500 is provided at the longitudinal end of the first connecting portion 217. .
  • a tube member 500 is provided in a portion where the coaxial cable 216a between the adjacent first connection portions 217 is exposed.
  • the tube member 500 is a covering member formed of a waterproof tube, for example, a tube made of polyimide.
  • the space formed by the first connecting portion 217 and the inside of the tube member 500 is sealed, and the coaxial cable 216a exposed to the outside can be provided with dust resistance and waterproofness.
  • the outer periphery of the plurality of coaxial cables 216 a exposed therebetween is covered.
  • the coaxial cable 216 a exposed between the outer sheath 304 (see FIG. 18) of the multicore coaxial cable 216 and the first connection portion 217 may be covered with the tube member 500. In this way, all the coaxial cables 216a exposed in the multi-core coaxial cable 216 can be covered with the tube member 500.
  • the tube member 500 having the effects obtained by the first embodiment described above and having a waterproof property is provided between the adjacent first connection portions 217 or the first connection portions. Since the coaxial cable 216a exposed between the outer cover 304 of the multi-core coaxial cable 216 and / or the first connection part 217 is covered between the second connection part 218 and the second connection part 218, the external connection While suppressing disconnection of the coaxial cable 216a due to a load or the like, waterproofness and dustproofness can be imparted.
  • the connector has a cylindrical shape in which the conductive portion and the insulating portion are continuously arranged. Moreover, it is good also as a connector only of a core wire holding part, making only a shield holding part independent.
  • the shield holding units 2170 and 2180 are described as collectively holding the shields 301 of the plurality of coaxial cables 216a to be connected.
  • shield holding portions 2170 and 2180 may be provided to hold the shields 301 of the different coaxial cables 216a, or a plurality of coaxial cables 216a to be connected may be divided into a plurality of sets.
  • the shield holding parts 2170 and 2180 corresponding to the number of sets may be provided, and each shield holding part may hold the shield 301 for each set.
  • the plurality of shield holding portions as the conductive portions are electrically connected to one or a plurality of shields 301 forming a set, and receptors are provided according to the number of shield holding portions. .
  • a piezoelectric element has been described as an example of emitting an ultrasonic wave and converting an ultrasonic wave incident from the outside into an echo signal.
  • the present invention is not limited to this. It may be an element manufactured like (Micro Electro Mechanical Systems), for example, C-MUT (Capacitive Micromachined Ultrasonic Transducers).
  • Ultrasonic miniature probes are usually inserted into the biliary tract, bile duct, pancreatic duct, trachea, bronchi, urethra, ureter, and used to observe surrounding organs (pancreas, lung, prostate, bladder, lymph nodes, etc.).
  • an external ultrasonic probe that irradiates ultrasonic waves from the body surface of a subject may be applied.
  • the extracorporeal ultrasonic probe is usually used for observing an abdominal organ (liver, gallbladder, bladder), breast (particularly mammary gland), and thyroid gland.
  • the ultrasonic probe unit, the ultrasonic endoscope, and the ultrasonic probe unit manufacturing method according to the present invention are useful for suppressing quality deterioration and easily manufacturing.

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Abstract

La présente invention concerne une unité de sonde à ultrasons comprenant : un transducteur ultrasonore (7) qui est disposé sur l'extrémité d'une partie d'insertion devant être insérée à l'intérieur d'un sujet et qui émet et reçoit des ondes ultrasonores ; une pluralité de câbles (216a) qui s'étendent du transducteur ultrasonore (7) ; et un connecteur tubulaire (217, 218) comprenant un agencement de parties conductrices et de parties isolantes en alternance, lesdits connecteurs tubulaires étant conçus de telle sorte que la pluralité de câbles (216a) les traversent et de sorte que la pluralité de câbles soit connectée électriquement à des parties conductrices différentes.
PCT/JP2017/007526 2016-03-03 2017-02-27 Unité de sonde à ultrasons, endoscope à ultrasons, et procédé de fabrication d'unité de sonde à ultrasons WO2017150461A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714329A (en) * 1980-06-30 1982-01-25 Tokyo Shibaura Electric Co Ultrasonic diagnosing device
JPS6080441A (ja) * 1983-10-11 1985-05-08 株式会社日立製作所 体腔内走査用超音波探触子
JPH0654848A (ja) * 1992-08-05 1994-03-01 Olympus Optical Co Ltd 体腔内超音波診断装置
JP2002543909A (ja) * 1999-05-14 2002-12-24 レーア ハインツ 医学目的用の器具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714329A (en) * 1980-06-30 1982-01-25 Tokyo Shibaura Electric Co Ultrasonic diagnosing device
JPS6080441A (ja) * 1983-10-11 1985-05-08 株式会社日立製作所 体腔内走査用超音波探触子
JPH0654848A (ja) * 1992-08-05 1994-03-01 Olympus Optical Co Ltd 体腔内超音波診断装置
JP2002543909A (ja) * 1999-05-14 2002-12-24 レーア ハインツ 医学目的用の器具

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