JP6132963B2 - Cable connection structure, ultrasound probe and ultrasound endoscope system - Google Patents

Description

  The present invention relates to a cable connection structure for connecting a cable and a substrate, and an ultrasonic probe and an ultrasonic endoscope system to which the cable connection structure is applied.

  Conventionally, as a coaxial cable connection structure for connecting a coaxial cable to a substrate provided with an electrode, an exposed portion of a connector connected to the substrate is fixed to the substrate by soldering using FPC (Flexible Printed Circuits; flexible A technique of covering with a printed circuit board) is disclosed (for example, see Patent Document 1). According to the technique disclosed in Patent Document 1, electromagnetic waves entering from the outside can be shielded from the connection structure with a simple configuration.

  Further, a technique is disclosed in which an FPC as a substrate on which a semiconductor component is mounted has an extending portion, and the extending portion is bent to cover and cover the semiconductor component (for example, a patent document). 2). According to the technique disclosed in Patent Document 2, since the semiconductor parts are integrally covered by the extended portion, the incident noise from the outside can be achieved with a simpler configuration than that of Patent Document 1 which is shielded by using another member. , And radiation noise from the inside can be shielded.

JP-A-5-136593 Japanese Patent No. 3234743

  However, the technique disclosed in Patent Document 1 considers crosstalk between cables when a plurality of cables (terminals) are accommodated in the FPC while the number of manufacturing processes such as solder processing for fixing an FPC increases. In other words, signal interference between cables could not be suppressed.

  In addition, the technology disclosed in Patent Document 2 is based on the crosstalk between the cables as described above, because the extended portion is provided for the semiconductor component and is not shielded against the cable connected to the substrate. Signal interference between cables could not be suppressed.

  The present invention has been made in view of the above, and has a cable connection structure, an ultrasonic probe, and an ultrasonic endoscope that can easily form a shield structure and suppress signal interference between cables. The purpose is to provide a system.

  In order to solve the above-described problems and achieve the object, a cable connection structure according to the present invention is a cable connection structure that connects a plurality of cables and electrodes provided on a board, and is integrated with the cable. Provided with an extension part that covers at least a connection part between the cable and the electrode, and the extension part is made of a bendable insulating film. A ground electrode is provided on the outer surface side different from the connection portion side, and the ground electrode is provided inside the insulating film and is electrically grounded.

  The cable connection structure according to the present invention is characterized in that, in the above invention, an insulating fixing member is provided between the substrate and the extending portion.

  An ultrasonic probe according to the present invention includes a plurality of cables, a substrate provided with electrodes, a transducer module having a plurality of ultrasonic transducers mounted on the substrate, and the cable. And extending from the cable and covering at least a connection portion between the cable and the electrode, and the extending portion is made of a bendable insulating film, and is provided on the extending portion. Is characterized in that a ground electrode is provided on the outer surface side different from the connection part side, and the ground electrode is provided in the insulating film and is electrically grounded.

  In addition, an ultrasonic endoscope system according to the present invention includes an insertion unit that is inserted into a body of a subject and outputs an ultrasonic signal in the body, and acquires an ultrasonic signal reflected in the body. An ultrasonic endoscope system is characterized in that the ultrasonic probe according to the above invention is provided at the distal end of the insertion portion.

  According to the present invention, since it is provided integrally with the cable or the substrate, extends from the cable or the substrate, and extends to cover the connection portion between the cable and the electrode, the shield structure can be easily configured. There is an effect that signal interference between cables can be suppressed.

FIG. 1 is a schematic diagram illustrating a cable connection structure according to a first embodiment of the present invention. FIG. 2 is a partial cross-sectional view taken along line AA of the electronic device shown in FIG. FIG. 3 is a schematic diagram illustrating the cable connection structure according to the first embodiment of the present invention. FIG. 4 is a schematic diagram illustrating a cable connection structure according to Modification 1-1 of Embodiment 1 of the present invention. FIG. 5 is a schematic diagram illustrating the cable connection structure according to the modified example 1-1 of the first embodiment of the present invention. FIG. 6 is a schematic diagram illustrating a cable connection structure according to the second embodiment of the present invention. 7 is a cross-sectional view of the cable connection structure shown in FIG. 6 taken along line BB. FIG. 8 is a schematic diagram showing a cable connection structure according to the second embodiment of the present invention. FIG. 9 is a schematic diagram illustrating a cable connection structure according to the modified example 2-1 of the second embodiment of the present invention. FIG. 10 is a schematic diagram showing a cable connection structure according to Modification 2-1 of Embodiment 2 of the present invention. 11 is a cross-sectional view taken along line CC of the cable connection structure shown in FIG. FIG. 12 is a perspective view schematically showing a cable connection structure that is Modification 2-2 of Embodiment 2 of the present invention. FIG. 13 is a schematic diagram showing the configuration of the substrate of the cable connection structure shown in FIG. FIG. 14 is an exploded perspective view schematically showing a cable connection structure that is Modification 2-2 of Embodiment 2 of the present invention. FIG. 15 is a perspective view schematically showing a cable connection structure that is Modification 2-2 of Embodiment 2 of the present invention. FIG. 16 is a schematic diagram illustrating a configuration of a transducer module connected to the cable connection structure according to the third embodiment of the present invention. FIG. 17 is a schematic diagram illustrating the configuration of the substrate of the cable connection structure according to the third embodiment of the present invention. FIG. 18 is a perspective view schematically showing an ultrasonic probe including a cable connection structure according to the third embodiment of the present invention. FIG. 19 is a perspective view schematically showing an ultrasonic probe including a cable connection structure according to the third embodiment of the present invention. FIG. 20 is a schematic diagram illustrating an ultrasonic endoscope system using an ultrasonic probe including the cable connection structure according to the third embodiment of the present invention.

  Embodiments of a cable connection structure according to the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments. Moreover, in description of drawing, the same code | symbol is attached | subjected and shown to the same part.

(Embodiment 1)
FIG. 1 is a schematic diagram illustrating a cable connection structure according to the first embodiment. FIG. 2 is a partial cross-sectional view taken along line AA of the electronic device shown in FIG. FIG. 3 is a schematic diagram illustrating the cable connection structure according to the first embodiment. As shown in FIG. 1, the cable connection structure 1 according to the first exemplary embodiment includes a substrate 10 and a plurality of cables 20 connected to the substrate 10. In the following description, the cable 20 is assumed to be a coaxial cable.

  The substrate 10 is an FPC made of a bendable insulating film, and has a substantially rectangular circuit forming portion 11 on which an electric circuit, an electrode, and the like are formed, and an electrode 12 that is electrically connected to the cable 20 on one surface. , 13. In addition, the substrate 10 is made of a bendable insulating film, and is provided on the surface on the side different from the connection side with the extended portion 14 extending from the end portion of the circuit forming portion 11 and the cable 20, and made of copper or the like. And a ground electrode 15. Here, the electrode 12 is a core wire connection electrode connected to a core wire 21 of the cable 20 described later, and the electrode 13 is a shield wire connection electrode connected to the shield wire 23. The substrate 10 is electrically grounded via the ground electrode 15. The ground electrode 15 may be provided inside the insulating film as long as it is located on the outermost surface on the side different from the connection side with the cable 20.

  The cable 20 is composed of a core wire 21 formed of a conductor made of copper or the like, and an insulator. The cable 20 covers the outer periphery of the core wire 21 and exposes the core wire 21 on the distal end side. A shield wire 23 made of a conductor covering the outer periphery and an outer insulating layer 24 made of an insulator covering the outer periphery of the shield wire 23 are provided. The cable 20 is formed by stripping the inner insulating layer 22, the shield wire 23, and the outer insulating layer 24 at the end portion on the side connected to the substrate 10.

  In the substrate 10 and the cable 20, the electrode 12 and the core wire 21 are electrically connected with a conductive bonding material such as solder. Further, also in the electrode 13 and the shield wire 23, the electrode 13 and the shield wire 23 are electrically connected by a conductive bonding material such as solder.

  In the substrate 10, the plurality of cables 20 are arranged according to the arrangement of the electrodes 12. Here, when the electrodes 12 are arranged in a line as shown in FIGS. 1 and 2, the extending portions 14 extend in this arrangement direction (see FIG. 3). Further, the distance d1 in the arrangement direction from the base end of the extending portion 14 is a distance that is at least the end of the member farthest from the base end of the electrodes 12 and 13 or the cable 20 (in the first embodiment, the electrode It is provided so that it may become more than the distance d2) to 13 edge parts. At this time, it is preferable to determine the distance d <b> 1 in consideration of the thickness of the cable 20 and the electrodes 12 and 13.

  Further, in the extending portion 14, the distance in the direction orthogonal to the arrangement direction is a distance equal to or more than the end portion of the electrode 12 or the core wire 21 that is farthest from the base end in the direction orthogonal to the arrangement direction, The distance is preferably determined in consideration of the thickness of the cable 20 and the electrodes 12 and 13.

  The extending portion 14 is bent from the proximal end in the arrangement direction to cover the electrodes 12 and 13 and the cable 20. Thereby, damage to the electrodes 12, 13 and the cable 20 can be prevented with a simple configuration, and incident noise from the outside and radiation noise from the inside can be shielded. In addition, since the ground electrode is provided on the outer surface side in the region covered with the extending portion 14, the necessary insulation can be ensured even when the outside of the cable connection structure 1 is damaged.

  Here, as shown in FIG. 2, an adhesive G (fixing member) made of an insulating resin is filled between the circuit forming portion 11, the extending portion 14, and the cable 20, and each positional relationship is Fixed. Since the positional relationship is fixed by filling the adhesive G between the circuit forming portion 11, the extending portion 14, and the cable 20, the signal line of each cable 20 and the extending portion 14 are formed. Since the distance to the ground electrode can be appropriately maintained, interference between signals transmitted through the cables 20 can be suppressed.

  According to the first embodiment, the substrate 10 made of a bendable insulating film is provided with the extended portion 14 that covers the electrodes 12 and 13 and the cable 20, and the space formed by the extended portion 14 is bonded. Since it is filled with the agent G, incident noise from the outside and radiation noise from the inside can be shielded with a simple configuration, and signal interference between the cables can be suppressed.

  In the first embodiment described above, the adhesive G is filled in the space formed by the circuit forming portion 11, the extending portion 14, and the cable 20, but the circuit forming portion 11 and the extending portion 14 are described. If the positional relationship between the cable 20 and the cable 20 can be fixed and the cable 20 is disposed so as to cover the cable 20, the adhesive G may be provided in part. If the electrode 12 and the core wire 21, the electrode 13 and the shield wire 23 are fixed by the conductive bonding material, and the signal interference between the cables can be suppressed by the ground electrode 15 or the like, the adhesive G extends to the circuit forming portion 11. Only the part between the existing part 14 may be fixed. The adhesive G can be applied as long as it is an insulating resin or the like that can fix the positional relationship between the circuit forming portion 11, the extending portion 14, and the cable 20.

  In the first embodiment described above, the ground electrode 15 is described as covering the entire outer peripheral side of the circuit forming portion 11 and the extending portion 14. However, if the ground can be grounded, the circuit forming portion 11 and the extending portion 14 It may cover a part on the outer peripheral side. The ground electrode 15 may be provided according to a connection portion between the substrate 10 and the cable 20.

  Moreover, in Embodiment 1 mentioned above, although the case where a coaxial cable was connected to a board | substrate was illustrated, it is not limited to this, It can apply similarly to other types of cables other than a coaxial cable.

  FIG. 4 is a schematic diagram illustrating a cable connection structure 1a according to the modified example 1-1 of the first embodiment. FIG. 5 is a schematic diagram illustrating a cable connection structure 1a according to the modified example 1-1 of the first embodiment. As in the cable connection structure 1 a shown in FIG. 4, in the substrate 10 a made of a bendable insulating film, a C-shaped cut is made in a region adjacent to the circuit forming portion 11 to form the extending portion 16. It may be. Thereby, the extension part 16 which consists of an insulating film which can be bent can be integrally provided with respect to the board | substrate 10a.

  The extending portion 16 is provided by making a cut in a C shape in the arrangement direction of the electrodes 12 of the circuit forming portion 11 in the substrate 10a. At this time, in the extended portion 16, the connecting portion (base end; broken line in FIG. 4) between the formed extended portion 16 and the substrate 10 a is on the circuit forming portion 11 a side and the arrangement direction of the electrodes 12 Is substantially orthogonal to

  The extending portion 16 is bent from the proximal end in the arrangement direction to cover the electrodes 12 and 13 and the cable 20 (see FIG. 5). Thereby, similarly to the first embodiment described above, the electrodes 12, 13 and the cable 20 can be prevented from being damaged with a simple configuration, and incident noise from outside and radiation noise from inside are shielded. be able to.

  Further, in a state in which the extending portion 16 is bent, the positional relationship among the circuit forming portion 11, the extending portion 16, and the cable 20 is fixed by filling the inside with an adhesive and providing a ground electrode on the outer surface side. Therefore, since the distance between the signal line of each cable 20 and the ground electrode formed in the extending portion 16 can be appropriately maintained, interference between signals transmitted by each cable 20 is suppressed. Even if damage occurs outside the cable connection structure 1a, necessary insulation can be ensured.

(Embodiment 2)
FIG. 6 is a schematic diagram illustrating a cable connection structure according to the second embodiment. 7 is a cross-sectional view of the cable connection structure shown in FIG. 6 taken along line BB. FIG. 8 is a schematic diagram illustrating a cable connection structure according to the second embodiment. As shown in FIG. 6, the cable connection structure 2 according to the second exemplary embodiment includes a substrate 30 and an FPC substrate 40 having a plurality of lead terminals 42 (cables) connected to the substrate 30. The substrate 30 is made of, for example, a semiconductor or glass epoxy resin, has a substantially rectangular shape, and has an electric circuit or a plurality of electrodes 31 connected to the electric circuit and provided on one surface.

  The FPC board 40 is made of a bendable insulating film, and is connected to the substantially rectangular circuit forming portion 41, which is a formation region of an electric circuit, and the circuit forming portion 41, and is protruded from one end of the circuit forming portion 41. Lead terminal 42. Further, the FPC board 40 is provided with an extending portion 43 made of a bendable insulating film and extending from one end of the circuit forming portion 41. The lead terminal 42 is made of, for example, copper, and the surface thereof may be plated with nickel or gold.

  In the substrate 30 and the FPC substrate 40, the electrode 31 and the lead terminal 42 are electrically connected by a conductive bonding material such as solder. Alternatively, electrodes may be metal-bonded and electrically connected like ultrasonic bonding.

  In the FPC board 40, when the plurality of lead terminals 42 are arranged in a row, the extending portion 43 extends in this arrangement direction. Further, the distance in the arrangement direction from the base end of the extension part 43 is the distance of the member farthest from the base end from which at least the extension part 43 extends, of the electrode 31 or the lead terminal 42 as in the first embodiment. The distance is greater than or equal to the end (in the second embodiment, the distance to the end of the electrode 31). At this time, the distance is preferably determined in consideration of the thickness of the electrode 31 and the lead terminal 42.

  Further, in the extending portion 43, the length orthogonal to the arrangement direction is a length that can cover the electrode 31 and the lead terminal 42 in a state where the electrode 31 and the lead terminal 42 are connected (fixed).

  The extending portion 43 is bent from the proximal end and covers the electrode 31 and the lead terminal 42. As a result, the second embodiment can prevent damage to the electrode 31 and the lead terminal 42 with a simple configuration as in the first embodiment described above, as well as incident noise from the outside, and from the inside. Radiated noise can be shielded.

  Further, in a state in which the extension portion 43 is bent, the extension portion 43 and the substrate 30 are fixed with an adhesive, and a ground electrode is provided on the outer surface side. Since the positional relationship is fixed, the distance between each lead terminal 42 and the ground electrode formed on the extending portion 43 can be appropriately maintained. Interference can be suppressed and necessary insulation can be ensured even when damage occurs outside the cable connection structure 2.

  FIG. 9 is a schematic diagram illustrating a cable connection structure according to the modified example 2-1 of the second embodiment. FIG. 10 is a schematic diagram illustrating a cable connection structure according to the modified example 2-1 of the second embodiment. 11 is a cross-sectional view taken along line CC of the cable connection structure shown in FIG. In the second embodiment described above, it is assumed that there is one extending portion, but a plurality of extending portions may be provided.

  As shown in FIGS. 9 to 11, the cable connection structure 2a according to the modification 2-1 includes a substrate 30a and an FPC substrate 40a having a plurality of lead terminals 42 connected to the substrate 30a. The substrate 30a has a substantially rectangular shape made of, for example, a semiconductor or glass epoxy resin, and has an electric circuit or a plurality of electrodes 31a connected to the electric circuit and provided on one surface.

  The FPC board 40a is made of a bendable insulating film, and is connected to the substantially rectangular circuit forming portion 41a, which is a formation region of an electric circuit, etc., and the circuit forming portion 41a, and protrudes from one end of the circuit forming portion 41a. Lead terminal 42. Further, the FPC board 40a is formed of a bendable insulating film, and is provided with two extending portions 43a and 43b extending from the circuit forming portion 41a.

  In the substrate 30a and the FPC substrate 40a, the electrode 31a and the lead terminal 42 are electrically connected by a conductive bonding material such as solder. Alternatively, electrodes may be metal-bonded and electrically connected like ultrasonic bonding.

  In the FPC board 40a, when a plurality of lead terminals 42 are arranged in a row, the two extending portions 43a and 43b are formed from the side surface perpendicular to the side surface from which the lead terminal 42 of the circuit forming portion 41a protrudes. Each extends along the arrangement direction. The distance in the arrangement direction from the base ends of the two extending portions 43a and 43b is at least the extending portion 43a or the extending portion 43b of the electrode 31a or the lead terminal 42 as in the second embodiment described above. It is provided so that it may become more than the distance more than the edge part of the member furthest from the base end which extends. At this time, the distance is preferably determined in consideration of the thickness of the electrode 31a and the lead terminal 42.

  Further, in the two extending portions 43a and 43b, the length orthogonal to the arrangement direction is a length that can cover the electrode 31a and the lead terminal 42 in a state where the electrode 31a and the lead terminal 42 are connected (fixed). It is.

  The two extending portions 43a and 43b are each bent from the base end to cover the surface of the substrate 30a. At this time, one extending portion (for example, the extending portion 43a) covers the surface of the substrate 30a on the side where the electrode 31a and the lead terminal 42 are disposed. The other extending portion (for example, the extending portion 43b) covers the back surface of the surface on which the electrode 31a and the lead terminal 42 of the substrate 30a are disposed (see FIG. 11). Thereby, this modification 2-1 can prevent damage to the substrate 30a more reliably than the second embodiment described above, and can reduce the incident noise from the outside and the radiation noise from the inside. Can be shielded.

  Further, in a state where the two extending portions 43a and 43b are bent, the respective extending portions 43a and 43b and the substrate 30a are fixed with an adhesive, and a ground electrode is provided on the outer surface side to thereby provide each extending portion. Since the positional relationship between the existing portions 43a and 43b and the substrate 30a is fixed, the distance between each lead terminal 42 and the ground electrode formed on the extending portions 43a and 43b can be appropriately maintained. Interference between signals transmitted through the lead terminals 42 can be suppressed, and necessary insulation can be ensured even when the outside of the cable connection structure 2a is damaged.

  In the above-described modification 2-1, it has been described that the two extending portions 43a and 43b are provided. However, one extending portion having a length corresponding to the two extending portions is provided on the substrate. It may be wound. Thereby, it becomes possible to cover the outer periphery of a board | substrate with an extension part.

  FIG. 12 is a perspective view schematically showing a cable connection structure that is a modification 2-2 of the second embodiment. FIG. 13 is a schematic diagram showing the configuration of the substrate of the cable connection structure shown in FIG. FIG. 14 is an exploded perspective view schematically showing a cable connection structure that is a modification 2-2 of the second embodiment. FIG. 15 is a perspective view schematically showing a cable connection structure that is a modification 2-2 of the second embodiment. In the second embodiment described above, the main surface of the substrate and the main surface of the FPC substrate are described as being substantially parallel to each other, but the main surface of the substrate and the main surface of the FPC substrate are orthogonal to each other. It may be.

  The cable connection structure 2b according to the modified example 2-2 includes the substrate 30 described above and an FPC substrate 40a having a plurality of lead terminals 42a (cables) connected to the substrate 30. The FPC board 40b is made of a bendable insulating film, and has a substantially rectangular circuit forming portion 41b on which an electric circuit or the like is formed, and a plurality of leads connected to the circuit forming portion 41b and protruding from one end of the circuit forming portion 41b. And a terminal 42a. Further, the FPC board 40b is provided with an extending portion 43c made of a bendable insulating film and extending from one end of the circuit forming portion 41b. The lead terminal 42a is made of, for example, copper, and the surface thereof may be plated with nickel or gold.

  The extending portion 43c has a distance d3 in the protruding direction from the protruding end portion of the lead terminal 42a of the circuit forming portion 41b, and is a lead on the side far from the extending portion 43c from at least the end portion on the lead terminal 42a side of the extending portion 43c. It extends so that it is more than the distance d4 to the edge part of the terminal 42a. Further, the protruding length d5 from the base end of the extending portion 43c is a length that can cover the lead terminal 42a and the electrode 31a when bent.

  In the substrate 30a and the FPC substrate 40b, the electrode 31a and the lead terminal 42a are electrically connected by a conductive bonding material such as solder. Alternatively, electrodes may be metal-bonded and electrically connected like ultrasonic bonding. At this time, as shown in FIG. 14, the lead terminal 42a is bent in a direction orthogonal to the main surface of the circuit forming portion 41b and connected to the electrode 31a.

  When the lead terminal 42a is connected to the electrode 31a, the main surface of the extending portion 43a is bent from the base end in a direction orthogonal to the main surface of the circuit forming portion 41a (see FIG. 15). It is bent along the outer edge to cover the electrode 31a and the lead terminal 42a (see FIG. 12).

  At this time, the contact portion between the side surface of the substrate 30a and the circuit forming portion 41b of the FPC substrate 40b is preferably fixed by an adhesive or the like. According to the modified example 2-2, in addition to the effects according to the second embodiment described above, the modification can be applied even when the main surface of the substrate 30a and the main surface of the FPC substrate 40b are not parallel. .

(Embodiment 3)
FIG. 16 is a schematic diagram illustrating a configuration of the transducer module 100 connected to the cable connection structure according to the third embodiment. FIG. 17 is a schematic diagram illustrating a configuration of the FPC board 50 of the cable connection structure according to the third embodiment. As shown in FIG. 16, the transducer module 100 used in Embodiment 3 includes a plurality of prismatic ultrasonic transducers 101 made of, for example, piezoelectric elements arranged in a direction perpendicular to the longitudinal direction of the ultrasonic transducer 101. Has been mounted on the board. Here, in the transducer module 100, the side surface formed by the plurality of arranged ultrasonic transducers 101 has an arc shape (convex type). Each ultrasonic transducer 101 is provided with an electrode 101a on one end side for electrical connection with, for example, the FPC board 50 shown in FIG.

  The FPC board 50 is made of a bendable insulating film, and includes a circuit forming portion 51 that is a formation region of an electric circuit, a plurality of lead terminals 52 (cables) protruding from one end of the circuit forming portion 51, and a circuit forming portion. The electrode 53 is provided on the surface on the other end side of 51 and is connected to the plurality of cables 60. The FPC board 50 is made of a bendable insulating film and extends from an end portion near the lead terminal 52 of the circuit forming portion 41, and an end portion near the electrode 53 of the circuit forming portion 41. And a second extending portion 55 extending from the second extending portion 55 is provided. Here, the end surface from which the lead terminal 52 protrudes has a curvature equivalent to the curvature of the arc-shaped side surface formed by the plurality of ultrasonic transducers 101. The lead terminal 52 is made of, for example, copper, and the surface thereof may be plated with nickel or gold.

  FIG. 18 is a perspective view schematically showing the ultrasonic probe 3 including the cable connection structure according to the third embodiment. FIG. 19 is a perspective view schematically showing the ultrasonic probe 3 including the cable connection structure according to the third embodiment. When the transducer module 100 and the FPC board 50 are electrically connected, as shown in FIG. 18, the lead terminal 52 is brought into contact with the electrode 101 a of the ultrasonic transducer 101 by bending the lead terminal 52 with respect to the main surface of the FPC board 50. Let At this time, the electrode 101a and the lead terminal 52 are electrically connected by a conductive bonding material such as solder. Alternatively, electrodes may be metal-bonded and electrically connected like ultrasonic bonding. Moreover, it is preferable that the vibrator module 100 and the FPC board 50 are fixed by an adhesive or the like on the side surface of the vibrator module 100 and the contact surface of the FPC board 50.

  After that, as shown in FIG. 19, the first extending portion 54 is bent so that the main surface is orthogonal to the main surface of the circuit forming portion 51, and then bent so as to cover the electrode 101 a and the lead terminal 52. . Here, as described above, the space between the circuit forming portion 51 and the first extending portion 54 is filled and fixed with an adhesive.

  Further, the FPC board 50 and the cable 60 are electrically connected with a conductive bonding material such as solder, for example, by bringing the conductive wire 61 into contact with the electrode 53. Here, as in the first and second embodiments, the second extending portion 55 is bent so as to cover the connection portion between the electrode 53 and the conducting wire 61. At this time, as described above, the space between the circuit forming portion 51 and the second extending portion 55 is filled and fixed with an adhesive.

  According to the third embodiment, similarly to the first and second embodiments described above, damage to the lead terminal 52, the electrodes 53, 101a, and the conducting wire 61 can be prevented with a simple configuration, and from the outside. Incident noise and radiation noise from inside can be shielded.

  In addition, in a state where the first extending portion 54 and the second extending portion 55 are bent, the circuit forming portion 51 and the first extending portion 54 and the second extending portion 55 are fixed with an adhesive, respectively. By providing the ground electrode on the outer surface side, the positional relationship among the transducer module 100, the first extending portion 54, the second extending portion 55, and the cable 60 is fixed. Since the distance between the (cable 60) and the ground electrode formed in the first extending portion 54 and the second extending portion 55 can be appropriately maintained, each lead terminal 52 and each conducting wire 61 (cable 60) Interference between transmitted signals can be suppressed, and necessary insulation can be ensured even when damage occurs outside the cable connection structure.

  In the third embodiment, each of the connection between the lead terminal, the cable, and the electrode can be appropriately combined with any of the first and second embodiments and the modifications described above.

  Furthermore, in the third embodiment, the ultrasonic transducer module 100 on which a plurality of prismatic ultrasonic transducers 101 made of piezoelectric elements are mounted has been described as an example. However, the capacitive ultrasonic transducer (C− Similar effects can be obtained also in the ultrasonic transducer module 100 equipped with MUT (Capacitive Micromachined Ultrasonic Transducer). When employing a capacitive ultrasonic transducer (C-MUT), unlike a piezoelectric element having a pair of electrodes on parallel surfaces, positive and negative electrodes (wiring portions) 101a are arranged on one surface; can do. Therefore, the signal line side and GND line side wiring portions can be covered with the extending portions of the present embodiment, and necessary insulation can be easily ensured. In addition, by providing an electrode (wiring part) on one surface, visibility can be improved and wiring conditions can be confirmed, for example, and wiring work can be facilitated, and productivity is improved.

  Moreover, the ultrasonic probe 3 according to the third embodiment described above is provided, for example, at the distal end of the ultrasonic endoscope 210 of the ultrasonic endoscope system 200 shown in FIG. An ultrasonic endoscope system 200 shown in FIG. 20 includes an ultrasonic endoscope 210, an endoscope observation device 220, an ultrasonic observation device 230, a display device 240, and a light source device 250. .

  The ultrasonic endoscope 210 is a convex ultrasonic endoscope including a convex transducer module 100 and an imaging optical unit including an observation optical system including a lens and an imaging element. Function and endoscope observation function. The transducer module 100 is realized by the above-described cable connection structure (ultrasonic probe 3). The endoscope observation apparatus 220 processes the control of the endoscope observation function and its output signal. The ultrasonic observation device 230 processes the ultrasonic observation function and its output signal. The display device 240 receives each signal from the endoscope observation device 220 and the ultrasonic observation device 230, for example, and appropriately displays at least one of an endoscopic image or an ultrasonic tomographic image. The light source device 250 includes a light source (not shown) for supplying illumination light for performing endoscopic observation. In addition, the ultrasonic endoscope system 200 includes an ultrasonic endoscope 210, an endoscope observation device 220, an ultrasonic observation device 230, a display device 240, and a light source device 250, and a video cable 260 and an ultrasonic cable 270, respectively. And a light source cable 280.

  The ultrasonic endoscope 210 is inserted into the body, outputs an ultrasonic signal in the body, and obtains an ultrasonic signal reflected in the body, and is connected to the proximal end side of the insertion part 211. And a universal cable 213 extending from the side of the operation unit 212. In addition, the universal cable 213 is provided at an end portion different from the operation portion 212 side, and has a connector portion 214 that connects to the video cable 260, the ultrasonic cable 270, and the light source cable 280, respectively.

  The insertion portion 211 is configured by connecting a distal end rigid portion 211a formed of a hard member, a bendable bending portion 211b, and a flexible flexible tube portion 211c in order from the distal end side. . The proximal end of the flexible tube portion 211 c is connected to the distal end side of the operation portion 212. The above-described vibrator module 100 is disposed in the distal end rigid portion 211a.

  The operation unit 212 is provided with a treatment instrument insertion port 212a for introducing a puncture needle, which will be described later, as a treatment instrument into the body. A treatment instrument insertion passage is provided inside the insertion portion 211, and the treatment instrument insertion port 212a is an insertion port for the treatment instrument insertion passage.

  The ultrasonic endoscope 210 and the endoscope observation apparatus 220 are electrically connected by a video cable 260 connected to the connector unit 214. The ultrasonic endoscope 210 and the ultrasonic observation device 230 are electrically connected by an ultrasonic cable 270 connected to the connector unit 214. The light source cable 280 is an optical fiber cable, and the ultrasonic endoscope 210 and the light source device 250 transmit illumination light from the light source of the light source device 250 to the ultrasonic endoscope 210 by the light source cable 280 connected to the connector unit 214. Lead to.

  By the ultrasonic endoscope system 200 configured as described above, the ultrasonic diagnostic apparatus 3 that transmits and receives ultrasonic waves is provided at the distal end of the insertion portion 211, and the insertion portion 211 is inserted into the body of the subject. An ultrasonic image of an organ or the like to be displayed is displayed on the display unit 241 of the display device 240, and an in-vivo image captured by the endoscope observation function is displayed on the display unit 241, thereby observing or diagnosing a diagnosis target. It becomes possible.

1, 1a, 2, 2a, 2b Cable connection structure 3 Ultrasonic probe 10, 10a, 30, 30a Substrate 11, 41, 41a, 41b, 51 Circuit forming part 12, 13, 31, 31a, 53, 101a Electrode 14, 16, 43, 43a, 43b, 43c Extension portion 15 Ground electrode 20, 60 Cable 21 Core wire 22 Internal insulation layer 23 Shield wire 24 External insulation layer 40, 40a, 50 FPC board 42, 42a, 52 Lead terminal 54 No. 1 extending portion 55 second extending portion 61 conducting wire 100 transducer module 101 ultrasonic transducer 200 ultrasonic endoscope system 210 ultrasonic endoscope 211 insertion portion 211a distal end rigid portion 211b bending portion 211c flexible tube portion 212 Operation unit 212a Treatment instrument insertion port 213 Universal cable 214 Connector unit 220 Endoscope observation apparatus 30 ultrasonic observation apparatus 240 display device 241 display unit 250 light source device 260 video cable 270 ultrasound cable 280 source cable

Claims (4)

A cable connection structure for connecting a plurality of cables and electrodes provided on a substrate,
Provided integrally with the cable, and extending from the cable, and including an extension portion that covers at least a connection portion between the cable and the electrode,
The extending portion is made of a bendable insulating film,
The extension part is provided with a ground electrode on the outer surface side different from the connection part side,
The cable connection structure, wherein the ground electrode is provided inside the insulating film and is electrically grounded.   The cable connection structure according to claim 1, further comprising an insulating fixing member disposed between the substrate and the extending portion. Multiple cables,
A substrate provided with electrodes;
A transducer module having a plurality of ultrasonic transducers mounted on the substrate;
An extension part that is provided integrally with the cable, extends from the cable, and covers at least a connection portion between the cable and the electrode;
With
The extending portion is made of a bendable insulating film,
The extension part is provided with a ground electrode on the outer surface side different from the connection part side,
The ultrasonic probe, wherein the ground electrode is provided inside the insulating film and is electrically grounded. An ultrasound endoscope system including an insertion unit that inserts into a body of a subject and outputs an ultrasound signal in the body and acquires an ultrasound signal reflected in the body,
An ultrasonic endoscope system comprising the ultrasonic probe according to claim 3 provided at a distal end of the insertion portion.