JP2015144788A - Ultrasonic vibration device and ultrasonic medical treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic vibration device which can be manufactured at a low cost with a simple constitution and in which an ultrasonic generation element can be used with characteristics of the original design by improving electrical wiring strength to a piezoelectric element unit.SOLUTION: An ultrasonic vibration device 2 comprises: two mass materials 42, 43 which are arranged so as to sandwich a lamination vibrator 41 in which a plurality of piezoelectric substances 61 and a plurality of electrodes 62, 63 are laminated; two distribution cables 37, 38 which apply or return electric power; a plurality of core wire exposed parts 37c, 38c which are formed so that cable core wires 37a, 38a are exposed by removing respective cable sheaths 37b, 38b of the two distribution cables 37, 38 at a plurality of spots along the longitudinal axis direction in accordance with the positions of a plurality of electrodes 62, 63 on a positive power side or negative power side; and connection parts 55, 56 which electrically connect and fix the exposed cable core wires 37a, 38a to the plurality of electrodes 62, 63.

Description

  The present invention relates to an ultrasonic vibration device that excites ultrasonic vibration, and an ultrasonic medical apparatus including the ultrasonic vibration device.

  In recent years, ultrasonic medical devices include, for example, ultrasonic treatment tools that are used for hemostasis / incision in laparoscopic surgery and that use friction / fever caused by ultrasonic vibration. An ultrasonic transducer that generates sonic vibrations is provided.

  For example, as disclosed in Patent Document 1, such an ultrasonic transducer includes a piezoelectric element unit in which piezoelectric elements are stacked using a conductive adhesive, and a metal tube having both ends threaded. What is comprised by inserting and screwing and fixing a metal member from the both ends is known.

  Since the ultrasonic vibrator disclosed in Patent Document 1 has a laminated structure by bonding a piezoelectric vibrator, it does not require a hole for passing a bolt as compared with a conventional bolt-clamped Langevin type vibrator. The effective volume of the vibrator can be increased efficiently.

JP 2010-34817 A

  By the way, the conventional ultrasonic transducer disclosed in Patent Document 1 is different from each other so that the same polarity terminal plates in the piezoelectric element unit are electrically joined to each other by a conductive layer of a conductive film or a conductive paste so as not to be short-circuited. An insulating film or an insulating layer of insulating paste is provided so as to insulate the conductive layer from the electrode terminal plate. The lead wire is electrically connected to the conductive layer by solder or the like.

  However, when the conventional ultrasonic transducer is used in a high-amplitude region by being incorporated in an ultrasonic medical device, the conductive layer and the insulating layer are broken and the electrical contact between the conductive layer and the lead wire is poor. There is a possibility that the range of usable amplitude is limited, and as a result, the original characteristics as an ultrasonic wave generation element cannot be obtained, or the resonator cannot be driven.

  Furthermore, the conventional ultrasonic vibrator has a configuration in which a conductive layer of conductive film or conductive paste and an insulating layer of insulating film or paste are provided, so that the assembly process becomes complicated and cannot be manufactured at low cost. was there.

  Accordingly, the present invention has been made in view of the above circumstances, and can be manufactured at a low cost with a simple structure, and the electrical wiring strength to the piezoelectric element unit can be improved, so that the ultrasonic generator is originally designed. It is an object of the present invention to provide an ultrasonic vibration device and an ultrasonic medical device that can be used in characteristics.

  An ultrasonic vibration device according to an aspect of the present invention includes a laminated vibrator in which a plurality of piezoelectric bodies and a plurality of electrodes are laminated, two mass members disposed so as to sandwich the laminated vibrator, and the laminated vibration. In accordance with the positions of two wiring cables for applying or returning power to the child and the plurality of electrodes on the positive power side or the negative power side, a plurality of cable sheaths of each of the two wiring cables are provided along the longitudinal axis direction. A plurality of core wire exposed portions that are peeled off to expose the cable core wires, and a connection that electrically connects and fixes the cable core wires exposed by the plurality of core wire exposed portions to the plurality of electrodes. A portion.

  An ultrasonic medical device according to an aspect of the present invention includes a laminated vibrator in which a plurality of piezoelectric bodies and a plurality of electrodes are laminated, two mass members disposed so as to sandwich the laminated vibrator, In accordance with the positions of the two wiring cables for applying or returning power to the laminated vibrator and the plurality of electrodes on the positive power side or the negative power side, the respective cable sheaths of the two wiring cables extend along the longitudinal axis direction. A plurality of core wire exposed portions formed to be stripped off at a plurality of locations to expose the cable core wires, and the cable core wires exposed by the plurality of core wire exposed portions are electrically connected and fixed to the plurality of electrodes. An ultrasonic vibration device including a connecting portion that transmits the ultrasonic vibration generated by the ultrasonic vibration device and treating a living tissue.

  According to the present invention, an ultrasonic wave that can be manufactured at a low cost with a simple structure, can improve the electrical wiring strength to the piezoelectric element unit, and can use the ultrasonic wave generating element with the original characteristics of the design. Vibrating devices and ultrasonic medical devices can be provided.

Sectional drawing which shows the whole structure of the ultrasonic medical device which concerns on 1 aspect of this invention The figure which shows the schematic structure of the whole vibrator unit same as the above The perspective view showing the configuration of the ultrasonic transducer Side view showing the configuration of the ultrasonic transducer The perspective view which shows the structure of two wiring cables derived | led-out from the front-end | tip of an electric cable similarly The perspective view which shows the structure of two wiring cables from which the cable sheath was stripped off The exploded perspective view showing the state where two wiring cables are electrically connected to the laminated vibrator of the ultrasonic vibrator The perspective view which shows the state in which the wiring cable by the side of negative electricity was electrically connected to one side of the laminated vibrator of an ultrasonic vibrator The perspective view which shows the state by which the wiring cable by the side of a positive power was electrically connected to one side of the laminated vibrator of an ultrasonic vibrator The side view which shows the state which connected the wiring cable to the one side surface of the laminated | stacked vibrator | oscillator of an ultrasonic vibrator according to the one aspect | mode of a 1st modification similarly. FIG. 10 is a side view showing a state in which the wiring cable is electrically connected to one side surface of the laminated vibrator of the ultrasonic vibrator in a wavy line according to another aspect different from FIG. 10 of the first modified example. The perspective view which shows the structure of the wiring cable which peeled off the cable sheath concerning a 2nd modification as well. The top view which shows the structure of the wiring cable which peeled off the cable sheath concerning a 2nd modification as well. The top view which shows the structure of the wiring cable which peeled off the cable sheath seen from the direction different from FIG. 13 according to the 2nd modification. Sectional drawing of the wiring cable which followed the XV-XV line | wire of FIG. Sectional drawing which shows the state in which two wiring cables were electrically connected to one side of the laminated vibrator of an ultrasonic transducer | vibrator according to the 2nd modification.

  Hereinafter, the present invention will be described with reference to the drawings. In the following description, the drawings based on each embodiment are schematic, and the relationship between the thickness and width of each part, the thickness ratio of each part, and the like are different from the actual ones. It should be noted that the drawings may include portions having different dimensional relationships and ratios between the drawings.

First, an embodiment of an ultrasonic medical apparatus including an ultrasonic vibration device that excites ultrasonic vibration according to an aspect of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing the overall configuration of the ultrasonic medical device, FIG. 2 is a diagram showing the overall schematic configuration of the transducer unit, FIG. 3 is a perspective view showing the configuration of the ultrasonic transducer, and FIG. FIG. 5 is a perspective view showing the configuration of two wiring cables led out from the tip of the electric cable, FIG. 6 is a perspective view showing the configuration of two wiring cables with the cable sheath stripped off, FIG. FIG. 7 is an exploded perspective view showing a state in which two wiring cables are electrically connected to the laminated vibrator of the ultrasonic vibrator, and FIG. 8 is a side view of the wiring cable on the negative electrode side on the side face of the laminated vibrator of the ultrasonic vibrator. FIG. 9 is a perspective view showing a state in which the positive-side wiring cable is electrically connected to one side surface of the laminated vibrator of the ultrasonic vibrator, and FIG. 1 relates to one aspect of the modified example, and ultrasonically vibrates the wiring cable in a wavy shape FIG. 11 is a side view showing a state in which the laminated vibrator is electrically connected to one side face, and FIG. 11 relates to another mode different from FIG. The side view which shows the state electrically connected to one side of the laminated vibrator of FIG. 12, FIG. 12 is a perspective view which shows the structure of the wiring cable which peeled off the cable sheath concerning 2nd modification, FIG. FIG. 14 is a plan view showing the configuration of a wiring cable with the cable sheath stripped according to the second modification, and FIG. 14 is a wiring cable with the cable sheath stripped from a direction different from FIG. 13 according to the second modification. 15 is related to the second modification, FIG. 15 is a cross-sectional view of the wiring cable along the line XV-XV in FIG. 13, and FIG. 16 is related to the second modification. Electrically connected to one side of the laminated vibrator of the ultrasonic vibrator And is a cross-sectional view illustrating a state.

(Ultrasonic medical device)
An ultrasonic medical device 1 shown in FIG. 1 includes a vibrator unit 3 having an ultrasonic vibrator 2 that mainly generates ultrasonic vibrations, and a handle unit that performs coagulation / incision treatment of an affected area using the ultrasonic vibrations. 4 are provided.

  The handle unit 4 includes an operation section 5, an insertion sheath section 8 including a long mantle tube 7, and a distal treatment section 30. The proximal end portion of the insertion sheath portion 8 is attached to the operation portion 5 so as to be rotatable about the axis.

  The distal treatment section 30 is provided at the distal end of the insertion sheath section 8. The operation unit 5 of the handle unit 4 includes an operation unit main body 9, a fixed handle 10, a movable handle 11, and a rotary knob 12. The operation unit body 9 is formed integrally with the fixed handle 10.

  A slit 13 through which the movable handle 11 is inserted is formed on the back side of the connecting portion between the operation unit main body 9 and the fixed handle 10. The upper part of the movable handle 11 extends into the operation unit main body 9 through the slit 13.

  A handle stopper 14 is fixed to the lower end of the slit 13. The movable handle 11 is rotatably attached to the operation unit main body 9 via a handle support shaft 15. The movable handle 11 is opened and closed with respect to the fixed handle 10 as the movable handle 11 rotates about the handle support shaft 15.

  A substantially U-shaped connecting arm 16 is provided at the upper end of the movable handle 11. The insertion sheath portion 8 includes a mantle tube 7 and an operation pipe 17 that is inserted into the mantle tube 7 so as to be movable in the axial direction.

  A large diameter portion 18 having a diameter larger than that of the distal end portion is formed at the proximal end portion of the outer tube 7. The rotary knob 12 is mounted around the large diameter portion 18.

  A ring-shaped slider 20 is provided on the outer peripheral surface of the operation pipe 19 so as to be movable along the axial direction. A fixing ring 22 is disposed behind the slider 20 via a coil spring (elastic member) 21.

  Further, the proximal end portion of the grip portion 23 is rotatably connected to the distal end portion of the operation pipe 19 via an action pin. This gripping part 23 constitutes a treatment part of the ultrasonic medical device 1 together with the distal end part 31 of the probe 6. When the operation pipe 19 moves in the axial direction, the grip portion 23 is pushed and pulled in the front-rear direction via the action pin.

  At this time, when the operation pipe 19 is moved to the hand side, the grip portion 23 is rotated counterclockwise about the fulcrum pin via the action pin.

  As a result, the gripping portion 23 rotates in the direction approaching the distal end portion 31 of the probe 6 (the closing direction). At this time, the living tissue can be grasped between the single-opening type grasping portion 23 and the distal end portion 31 of the probe 6.

  In this state where the living tissue is gripped, electric power is supplied from the ultrasonic power source to the ultrasonic vibrator 2 to vibrate the ultrasonic vibrator 2. This ultrasonic vibration is transmitted to the tip 31 of the probe 6. Then, using this ultrasonic vibration, a coagulation / incision treatment of the living tissue held between the holding portion 23 and the distal end portion 31 of the probe 6 is performed.

(Vibrator unit)
Here, the vibrator unit 3 will be described.
As shown in FIG. 2, the transducer unit 3 integrally assembles an ultrasonic transducer 2 and a probe 6 that is a rod-shaped vibration transmission member that transmits ultrasonic vibration generated by the ultrasonic transducer 2. It is a thing.

  The ultrasonic transducer 2 is connected to a horn 32 that amplifies the amplitude of the ultrasonic transducer. The horn 32 is made of stainless steel, duralumin, or a titanium alloy such as 64Ti (Ti-6Al-4V).

  The horn 32 is formed in a conical shape whose outer diameter becomes narrower toward the distal end side, and an outward flange 33 is formed on the base end outer peripheral portion. Here, the shape of the horn 32 is not limited to the conical shape, but may be an exponential shape in which the outer diameter decreases exponentially toward the tip side, or a step shape that gradually decreases toward the tip side. May be.

  The probe 6 has a probe main body 34 formed of a titanium alloy such as 64Ti (Ti-6Al-4V). On the proximal end side of the probe main body 34, the ultrasonic transducer 2 connected to the horn 32 is disposed.

  In this way, the transducer unit 3 in which the probe 6 and the ultrasonic transducer 2 are integrated is formed. The probe 6 has a probe main body 34 and a horn 32 screwed together, and the probe main body 34 and the horn 32 are joined.

  The ultrasonic vibration generated by the ultrasonic transducer 2 is amplified by the horn 32 and then transmitted to the distal end portion 31 side of the probe 6. The distal end portion 31 of the probe 6 is formed with a later-described treatment portion for treating living tissue.

  In addition, two rubber linings 35 are attached to the outer peripheral surface of the probe main body 34 at intervals of vibration node positions in the middle of the axial direction at intervals formed in a ring shape with an elastic member. These rubber linings 35 prevent contact between the outer peripheral surface of the probe main body 34 and an operation pipe 19 described later.

  That is, when the insertion sheath portion 8 is assembled, the probe 6 as the transducer integrated probe is inserted into the operation pipe 19. At this time, the rubber lining 35 prevents contact between the outer peripheral surface of the probe main body 34 and the operation pipe 19.

  Further, the ultrasonic transducer 2 is electrically connected via an electric cable 36 to a power supply device main body (not shown) that supplies a current for generating ultrasonic vibration. The ultrasonic vibrator 2 is driven by supplying electric power from the power supply main body to the ultrasonic vibrator 2 through the wiring in the electric cable 36.

  From the above description, the vibrator unit 3 transmits the ultrasonic vibrator 2 that generates ultrasonic vibration, the horn 32 that amplifies the ultrasonic vibration generated by the ultrasonic vibrator 2, and the amplified ultrasonic vibration. A probe 6 is provided.

(Ultrasonic transducer)
Here, the ultrasonic transducer 2 as the ultrasonic vibration device of the present invention will be described below.
As shown in FIGS. 3 and 4, the ultrasonic transducer 2 of the transducer unit 3 is connected to the above-described horn 32 that is connected to the probe main body 34 that is one of the vibration transmitting members by screwing or the like in order from the tip. A laminated vibrator 41 as a laminated piezoelectric body unit, which is a rectangular (quadrangular columnar) ultrasonic wave generating element connected continuously to the rear of the horn 32, and the base end of the horn 32 to the electric cable 36. And a cover body 51 that covers the laminated vibrator 41.

  Note that the cover body 51 that covers the laminated vibrator 41 has a folding stop 52 that covers the distal end portion of the electric cable 36 at the proximal end portion. From this electric cable 36, two wiring cables 37 and 38 as lead wires are led out. These two wiring cables 37 and 38 are electrically connected to the laminated vibrator 41.

  The laminated vibrator 41 is joined to a front mass 42 made of a metal block body having a rectangular shape (square prism shape), which is two mass members connected on the front side to the horn 32 by screwing or the like, and the rear side is rectangular. It is joined to a back mass 43 formed of a metal block body having a shape (square column shape).

  Since the front mass 42 and the back mass 43 are required to have low ultrasonic vibration absorption and high strength, the front mass 42 and the back mass 43 are formed of a metal such as duralumin like the horn 32. Further, the front mass 42 and the back mass 43 may be stainless steel or a titanium alloy such as 64Ti (Ti-6Al-4V). The lengths of the front mass 42 and the back mass 43 are designed so that the ultrasonic transducer 2 has a desired resonance frequency.

  Furthermore, the laminated vibrator 41 may sandwich an insulating member that is insulative and hardly attenuates vibration between the front mass 42 and the back mass 43. As this insulating member, for example, an insulating plate in which a ceramic material such as alumina or silicon nitride is formed in a rectangular (square column) plate body may be used.

  As described above, the laminated vibrator 41 is provided with an insulating member, so that the ultrasonic medical device 1 shown in FIG. 1 can be used in combination with a treatment instrument such as a medical high-frequency knife that performs a treatment using a high frequency. Damage from the treatment tool due to high frequency is prevented.

  The laminated vibrator 41 uses a piezoelectric element formed of a lead-free single crystal material having a high Curie point, and a plurality of piezoelectric single crystals 61 as a piezoelectric single crystal chip, which is the piezoelectric element, four are laminated here. Has been placed.

  Between these four piezoelectric single crystal bodies 61, the front mass 42, and the back mass 43, a positive electric side electrode 62 serving as a positive electrode layer and a negative electric side electrode 63 serving as a negative electrode layer are alternately interposed.

  The positive-side electrode 62 and the negative-side electrode 63 are non-bonding materials as bonding materials for bonding the piezoelectric single crystals 61 and between the piezoelectric single crystals 61 and the front mass 42 or the back mass 43 to each other. It is formed by interposing a brazing material such as lead solder and a conductive paste at a predetermined thickness. At this time, a metal such as gold is formed on the positive electrode and the negative electrode of the piezoelectric single crystal through the contact metal layer.

  In addition, the laminated vibrator 41 includes the wiring cable described above between the positive electrode 62 or the negative electrode 63 provided between the piezoelectric single crystals 61 and between the piezoelectric single crystal 61 and the front mass 42 or the back mass 43. 37 and 38 are electrically connected by cream solder, conductive paste or the like.

(Wiring cable)
Here, the configuration of the wiring cables 37 and 38 of the present embodiment will be described in detail.
As shown in FIG. 5, the two wiring cables 37 and 38 are laminated as shown in FIG. 6 by cable sheaths 37 b and 38 b, which are insulation coatings covering the cable core wires 37 a and 38 a, by means of a device such as a laser wire stripper. Only a portion electrically connected to the positive electrode 62 or the negative electrode 63 of the vibrator 41 is peeled off to form a plurality of core wire exposed portions 37c, 38c.

  The two wiring cables 37, 38 are formed with core wire exposed portions 37 c, 38 c that expose the cable core wires 37 a, 38 a in accordance with the interval between the positive power side electrode 62 or the negative power side electrode 63 of the laminated vibrator 41. At that portion, the cable sheaths 37b and 38b are peeled off.

  Further, the cable cores 37a and 38a are exposed in the longitudinal axis direction of the two wiring cables 37 and 38 with a length equal to or longer than the dimension in the thickness direction of the positive power side electrode 62 or the negative power side electrode 63 to be electrically connected. Thus, the length by which the cable sheaths 37b and 38b are peeled off is set.

  The two wiring cables 37 and 38 are not less than the dimension in the thickness direction of the positive-side electrode 62 or the negative-side electrode 63 that are not electrically connected between the exposed cable cores 37a and 38a along the longitudinal axis direction. In length, the cable sheaths 37b and 38b cover the cable core wires 37a and 38a.

  Specifically, in the two wiring cables 37, 38 extending from the tip of the electric cable 36, the wiring cable 37 of the feedback cable is electrically connected to the three negative power side electrodes 63 as the negative power side to which power is fed back. For this reason, the thickness of the negative electrode 63 is obtained by peeling the cable sheath 37b in a state where the cable core wire 37a is peeled off at three positions corresponding to the three negative electrodes 63 along the longitudinal axis direction. A core wire exposed portion 37c having a length longer than the dimension in the direction is formed.

  Moreover, since the wiring cable 38 of the application cable as the positive power side to which power is applied is electrically connected to the two positive power electrodes 62, it corresponds to the two positive power electrodes 62 along the longitudinal axis direction. The cable sheath 38b is peeled off in a state where the cable core wire 38a is peeled off at two spaced intervals, thereby forming a core wire exposed portion 38c having a length equal to or greater than the thickness direction dimension of the positive electrode 62. The

  Then, the two wiring cables 37 and 38 from which the cable core wires 37a and 38a are exposed at the core wire exposed portions 37c and 38c are attached to the side surfaces of the laminated vibrator 41, as shown in FIG. It is done.

  The two wiring cables 37 and 38 here are attached so as to be electrically connected to different separated side surfaces of the laminated vibrator 41. The two wiring cables 37 and 38 may be attached to either the different side surface or the same side surface of the laminated vibrator 41 as long as they are not short-circuited.

  Then, cream solder, conductive paste, or the like is applied between the cable core wires 37a, 38a exposed at the core wire exposed portions 37c, 38c and the positive power side electrode 62 or the negative power side electrode 63.

  From this state, as shown in FIGS. 8 and 9, the solder paste is melted or the conductive paste is sintered by heating means such as reflow, and the cable core wires 37a, 38a and the positive-side electrode 62 or the negative-side electrode Connection portions 55 and 56 for electrically connecting 63 are formed.

  With such a configuration, the ultrasonic transducer 2 is configured such that the cable core wires 37a and 38a of the two wiring cables 37 and 38 are directly connected to the positive power side electrode 62 or the negative power side electrode 63 of the laminated transducer 41, Since it is a simple structure fixed by 56 and electrically connected, it can be manufactured at low cost, and the connection strength to the positive power side electrode 62 or the negative power side electrode 63 is improved.

  Furthermore, the ultrasonic transducer 2 has a cable sheath 37b only at a portion where the cable cores 37a, 38a of the two wiring cables 37, 38 are electrically connected to the positive electrode 62 or the negative electrode 63 of the laminated transducer 41. , 38b are formed to expose the core wire exposed portions 37c, 38c, so that the negative power side wiring cable 37 can be connected to the positive power side electrode 62 and the positive power side wiring cable 38 without using an insulating material. Electrical insulation can be ensured without a short circuit with the negative electrode 63.

  In addition, the two wiring cables 37 and 38 use a twisted wire rather than a single wire for the cable core wires 37a and 38a, thereby increasing a contact area with the connection portions 55 and 56 in which cream solder or conductive paste is solidified. In addition, reliable electrical connection with the positive electrode 62 or the negative electrode 63 can be performed, and the connection strength with respect to the positive electrode 62 or the negative electrode 63 can be improved to prevent electrical contact failure due to peeling or the like. it can.

  From the above description, the ultrasonic transducer 2 built in the ultrasonic medical apparatus 1 of the present embodiment can be manufactured at a low cost with a very simple structure, and is a wiring that applies feedback for driving and feeds back. It is possible to improve the strength of the connection portion between the two wiring cables 37 and 38 and use the laminated vibrator 41 that is an ultrasonic wave generating element with the inherent characteristics of the design.

  Note that the two wiring cables 37 and 38 that are electrically connected to the laminated vibrator 41 of the ultrasonic vibrator 2 described above may be configured in various modifications described below.

(First modification)
As shown in FIG. 10 or FIG. 11, the two wiring cables 37 and 38 are deformed into a so-called wavy line having a substantially sinusoidal shape with the lamination direction of the laminated vibrator 41 as a horizontal axis. , 38a may be connected to the positive electrode 62 or the negative electrode 63 of the laminated vibrator 41 (only the wiring cable 37 is shown in FIGS. 10 and 11).

  That is, the two wiring cables 37 and 38 are not in a straight line but in a wavy shape, and are electrically connected by the connecting portions 55 and 56 made of cream solder or conductive paste rather than the distance between the positive power side electrodes 62 or the negative power side electrodes 63. Therefore, the distance between the two points of the cable core wires 37a and 38a connected to each other is longer.

  With such a configuration, even if the ultrasonic transducer 2 is driven with high amplitude, the wavy line portions of the two wiring cables 37 and 38 expand and contract, so that the two wiring cables 37 and 38 and the positive power side Stress is hardly applied to the connecting portions 55 and 56 that are electrically connected to the electrode 62 or the negative electrode 63, and the vibration resistance strength is improved.

(Second modification)
The two wiring cables 37 and 38 are electrically connected by facing a positive-side electrode 62 or a negative-side electrode 63 of the laminated vibrator 41 with a device such as a laser wire stripper, as shown in FIGS. As the portion to be formed, the core wire exposed portions 37c and 38c for exposing the cable core wires 37a and 38a may have a shape in which only part of the cable sheaths 37b and 38b, in this case, approximately half are peeled off in the circumferential direction around the longitudinal axis ( In FIG. 12, only the wiring cable 37 is shown).

  That is, the two wiring cables 37 and 38 are substantially in the circumferential direction in which the cable core wires 37a and 38a are about the longitudinal axis so that the two wiring cables 37 and 38 can be electrically connected to the positive power side electrode 62 or the negative power side electrode 63 of the laminated vibrator 41. Core wire exposed portions 37c and 38c are formed by stripping the cable sheaths 37b and 38b so that only half of the cable sheaths 37b and 38b are exposed at positions facing the positive and negative electrodes 62 and 63.

  Also here, the two wiring cables 37 and 38 have core wire exposed portions 37c and 38c that expose the cable core wires 37a and 38a in accordance with the interval between the positive electrode 62 or the negative electrode 63 of the laminated vibrator 41. A plurality of cable sheaths 37b, 38b are formed so that the cable core wires 37a, 38a are exposed in the longitudinal axis direction with a length equal to or greater than the thickness direction dimension of the positive-side electrode 62 or the negative-side electrode 63. The length to be stripped is set.

  The two wiring cables 37 and 38 in which the cable core wires 37a and 38a are exposed by approximately half in the circumferential direction around the longitudinal axis by the respective core wire exposed portions 37c and 38c are the cable core wires 37a exposed from the side surface of the laminated vibrator 41. , 38a are aligned so that cream solder, conductive paste or the like is applied between the cable core wires 37a, 38a and the positive-side electrode 62 or the negative-side electrode 63 in the same manner as described above. The

  From this state, as shown in FIG. 16, the cable core wires 37 a and 38 a are exposed by approximately half in the circumferential direction around the longitudinal axis by melting the cream solder or sintering the conductive paste by heating means such as reflow. And connecting portions 55 and 56 for electrically connecting the positive electrode 62 or the negative electrode 63 to each other.

  With such a configuration, the two wiring cables 37 and 38 are further improved in insulation by reducing the portions where the cable core wires 37a and 38a are exposed, and the cable sheaths 37b and 37a covering the cable core wires 37a and 38a are further improved. Since 38 b does not move in the axial direction, the two wiring cables 37 and 38 can be easily positioned when the laminated vibrator 41 is connected to the positive electrode 62 or the negative electrode 63.

  Note that the ultrasonic transducer 2 may have a configuration in which the first modification and the second modification are combined.

  In the above description, the ultrasonic transducer 2 has an example of a rectangular block shape that can be manufactured at the lowest cost. However, the shape of these members is, for example, a cylindrical shape without being limited thereto. But you can.

Furthermore, although the above-described ultrasonic transducer 2 is exemplified by a configuration in which a piezoelectric element formed of a lead-free single crystal material is used for the laminated transducer 41, the present invention is not limited to this, but lead zirconate titanate This technique can also be applied to a structure in which piezoelectric elements such as (PZT, Pb (Zrx, Ti _1-X ) O 3) are stacked.

  The invention described in the above-described embodiment is not limited to the embodiment and modifications, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

  For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the described requirements can be deleted if the stated problem can be solved and the stated effect can be obtained. The configuration can be extracted as an invention.

DESCRIPTION OF SYMBOLS 1 ... Ultrasonic medical device 2 ... Ultrasonic vibrator 3 ... Vibrator unit 4 ... Handle unit 5 ... Operation part 6 ... Probe 7 ... Outer tube 8 ... Insertion sheath part 9 ... Operation part main body 10 ... Fixed handle 11 ... Movable handle DESCRIPTION OF SYMBOLS 12 ... Rotation knob 13 ... Slit 14 ... Handle stopper 15 ... Handle support shaft 16 ... Connection arm 17 ... Operation pipe 18 ... Large diameter part 19 ... Operation pipe 20 ... Slider 22 ... Fixing ring 23 ... Grip part 30 ... Tip treatment part 31 ... distal end portion 32 ... horn 33 ... outward flange 34 ... probe body 35 ... rubber lining 36 ... electric cables 37, 38 ... wiring cables 37a, 38a ... cable core wires 37b, 38b ... cable sheaths 37c, 38c ... core wire exposed portions 41 ... lamination Vibrator 42 ... Front mass 43 ... Back mass 51 ... Cover body 52 ... Folding stop 55, 56 ... Connection 61 ... Piezoelectric Crystal 62 ... Tadashiden side electrode 63 ... negative charge side electrode

Claims (7)

A laminated vibrator in which a plurality of piezoelectric bodies and a plurality of electrodes are laminated;
Two mass members arranged so as to sandwich the laminated vibrator;
Two wiring cables for applying or returning power to the laminated vibrator;
A plurality of cable sheaths of the two wiring cables are peeled off along the longitudinal direction in accordance with the positions of the plurality of electrodes on the positive power side or the negative power side, so that the cable core wires are exposed. A plurality of core wire exposed portions,
A connecting portion for electrically connecting and fixing the cable core wires exposed by the plurality of core wire exposed portions to the plurality of electrodes;
An ultrasonic vibration device comprising:   The cable core wires are exposed by the plurality of core wire exposed portions with a length equal to or longer than a dimension in a thickness direction of the plurality of electrodes to be electrically connected to the two wiring cables. 2. The ultrasonic vibration device according to 1.   The two sheathed cables cover the cable core wire with a length equal to or greater than the dimension in the thickness direction of the plurality of electrodes that are not electrically connected between the exposure of the cable core wire by the plurality of core wire exposed portions. The ultrasonic vibration device according to claim 1, wherein the ultrasonic vibration device is provided.   The super wiring according to any one of claims 1 to 3, wherein the two wiring cables are provided in a substantially sinusoidal shape with the laminating direction of the laminated vibrator 41 as a horizontal axis. Sonic vibration device.   The cable core wire is a twisted wire, and the connecting portion for electrically connecting and fixing the twisted wire to the plurality of electrodes is formed by solidifying cream solder or conductive paste. The ultrasonic vibration device according to claim 1.   The plurality of core wire exposed portions formed by stripping only a part of the cable sheath at positions where the cable core wires are exposed facing the plurality of electrodes. The ultrasonic vibration device according to any one of claims 1 to 5. The ultrasonic vibration device according to any one of claims 1 to 6,
A probe tip for treating a living tissue through transmission of ultrasonic vibration generated by the ultrasonic vibration device;
An ultrasonic medical device comprising:

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