JPH03151942A - Mechanical sector probe of ultrasonic diagnostic apparatus - Google Patents

Abstract

PURPOSE:To make a connection work easy and to contrive an improvement in a shielding effect on the connection part by gathering internal signal lines and external signal lines together at a wiring part formed on one side of a flexible substrate, where they are connected with each other, and by covering this wiring part with a shield part which is also formed on the other side of the flexible substrate. CONSTITUTION:A flexible substrate 17 is stuck and fixed to an outer peripheral face of a frame 8a of motor 8 with its one side, which is furnished with an adhesive tape 21, inward and wiring parts 18, 18 outward. Stripped lead wires of internal signal lines 12, 12 are connected and fixed to respective tips of the wiring parts 18, 18 of the substrate 17 by soldering and stripped lead wires of external signal lines 14, 14 are also connected and fixed to the other tips in the same manner. The flexible substrate 17 is further wound around the part, which has been already wound one turn around the outer periphery of motor frame 8a, stuck and fixed to it, wrapped over and stuck to that part after adjusting its length and position so that a shield part 19, which is formed on the substrate 17, is made to cover the total periphery of the part of substrate 17, which has been wound in the first one turn.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a mechanical sector probe for an ultrasonic diagnostic apparatus in which the wiring structure of signal lines is improved.

(Prior art) A mechanical sector probe used in a mechanical sector scan type ultrasound diagnostic device has a probe body filled with liquid, an ultrasonic transducer installed in the liquid sealed part so as to be swingable, and A drive source unit, such as a motor, is installed inside the ultrasound transducer to drive the ultrasound transducer.During diagnosis, the probe body is placed on the body surface of the subject, the ultrasound transducer emits ultrasound, and the motor generates ultrasound vibrations. By shaking the child's head, the ultrasonic waves are spread out in a fan shape and scanned.

In this mechanical sector probe, an internal signal line is provided inside the probe body to send and receive signals to and from the probe body, and an external signal line connected to the diagnostic equipment body is drawn from outside the probe body to the inside. The signal line and the external signal line are connected inside the probe body. The connecting portion between the internal signal line and the external signal line is shielded and held and fixed against the outer peripheral surface of a motor frame provided inside the probe body.

In the conventional mechanical sector probe, the following configuration is adopted for the connecting portion between the internal signal line and the external signal line.

One of the configurations is as shown in FIG. Solder and cover the soldering part with the insulating tube 24, and connect the conductor of the other internal signal line 12 and the other external signal line 14.
The conductive wires are soldered to a shield sheet 25, and the insulation tube 24 is surrounded by the shield sheet 25.

Each signal line 12, 14 is applied to the motor frame 8a and fixed, for example, by wrapping two adhesive tapes around the outer circumference of the motor frame 8a.

Another configuration is to prepare an insulating sheet 26 on which a wiring part 27 and a shield part 28 surrounding this wiring part 27 are formed, as shown in FIG. This is to solder the signal line 14. Each signal line 12, 14 is applied to the outer periphery of the motor frame 8a and fixed, for example, by wrapping an adhesive tape 29 around the outer periphery of the motor frame 8a.

(Problems to be Solved by the Invention) However, the connection configuration between the internal signal line and the external signal line in such a conventional mechanical sector probe has the following problems.

That is, in the former configuration, after one internal signal line 12 and external signal line 14 are soldered, the soldering area is covered with an insulating tube 24, and the other internal signal line 12 and external signal line 14 are separately connected. The multiple steps of soldering to the shield sheet 25 and wrapping the whole body with the shield sheet 25 require a lot of work, and both the insulating tube 24 and the shield sheet 25 are required.

In addition, the latter configuration requires less work and fewer parts than the former configuration, but the signal line 12.14
Since the connecting portion of the insulating sheet 26 and the wiring portion 27 is not covered with a shielding material and remains exposed, the reliability of the shielding effect is low.

The present invention has been made based on the above-mentioned circumstances, and provides a mechanical sector probe for an ultrasonic diagnostic apparatus that is equipped with a signal line connection part that facilitates the work of connecting signal lines and has a reliable shielding effect. With the goal.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the cal sector probe in the mechanism of the ultrasonic diagnostic apparatus of the present invention includes a probe body and an ultrasonic vibration provided on the probe body. a drive source section provided in the probe body to drive the ultrasonic transducer, an internal signal line provided inside the probe body and connected to the ultrasonic transducer, and an internal signal line drawn into the probe body from the outside. a flexible substrate having a wiring section and a shield section formed side by side; the flexible substrate is wound around the outer circumferential surface of the drive source section with the wiring section and shield section forming surface facing outward; The internal signal line and the external signal line are connected to the wiring part, and the part where the shield part is formed covers the wiring part forming surface and the internal signal line and the external signal line connected to the wiring part. It is something to do.

Further, the flexible substrate has an adhesive layer on a surface that contacts the outer circumferential surface of the motor, and is bonded to the outer circumferential surface of the drive source section by this adhesive layer.

(Function) The internal signal line and the external signal line can be connected together by soldering to the wiring part formed on the flexible board, and the connecting part between the internal signal line and the external signal line can be connected to the flexible board. A high shielding effect can be obtained since it is covered with the formed shield part.

Furthermore, by simply wrapping the flexible substrate around the drive source section, it is possible to cover the connection section and fix the signal line to the drive source section at the same time.

Moreover, the flexible board has components that connect signal lines,
Since the component for shielding the connecting portion of the signal line and the component for fixing the signal line to the drive source section are shared, the number of components can be reduced and the configuration can be simplified.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of the mechanical sector probe of the ultrasonic diagnostic apparatus of the present invention will be described with reference to FIGS. 1 to 4.

The entire mechanical sector probe is explained with reference to FIG. 1. In the figure, 1 is the probe body, 2 is a cap attached to the tip opening of the probe body 1, and 3 is a cap that fits inside the tip opening of the probe body 1. The attached compartment 4 is an internal solution chamber formed between the cap 2 and the compartment 3 and filled with a liquid 5 such as water, and 6 is a shaft 7 provided in the liquid chamber 4. An ultrasonic transducer is supported so as to swing freely; 8 is a motor, which is an example of a drive source provided inside the probe body 1; 9 is inserted into the partition body 3;
A drive shaft 11 of a motor 8 rotatably supported by a bearing 10 provided in the liquid filling chamber 4 is a swinging mechanism that swings the ultrasonic vibrator 6 by rotation of the drive shaft 9. 12.12 is an internal signal line, and this internal signal line 12
．． 12 is connected to the ultrasonic transducer 6 and is wired from the internal solution sealing chamber 4 through the partition 3 to the inside of the probe body 1 . Note that the internal signal lines 12.12 are housed inside the jacket 13 as two-core wires. 14.14 is an external signal line, and this external signal line 14.14 is housed inside the cable 16 together with the power line 15 of the motor 8.

The cable 16 is drawn into the inside of the probe body 1 from outside the probe body 1 through its base end, the external signal lines 14 and 14 are drawn out from the cable 16, and the power line 15 is connected to the motor 8. ing. Note that the external signal line 14.14 is connected to the main body of an ultrasonic diagnostic apparatus (not shown), and the power supply line 15 is also connected to the main body of the apparatus.

Internal signal lines 12.12 and external signal lines 14.14 are connected to a flexible substrate 17 (described later) inside the probe body 1.
and is fixed to the motor 8. As shown in FIG. 5, the flexible substrate 17 is made of a resin film in the form of a band having a length more than twice the circumference of the outer peripheral surface of the frame 8a of the motor 8. On one surface of the flexible substrate 17, two wiring portions 18 and 18 made of a conductive material are arranged in an elongated pattern along the width direction of the substrate.
are formed at intervals in the longitudinal direction of the substrate, and the remaining portion is a sheet-shaped shield portion 1 made of a conductive material.
9 is formed along the longitudinal direction of the substrate. A ground portion 20 made of a conductive material is formed on the other surface of the flexible substrate 17 in a portion corresponding to the wiring portion forming portion on one surface, and an adhesive tape 21 is further formed on the peripheral edge of the other surface as an example of an adhesive layer. It is a provision. The shield portion 19 on one side of the flexible substrate 17 and the ground portion 20 on the other side are electrically connected to each other by filling a through hole 22 formed through the flexible substrate 17 with a conductive material.

The flexible substrate 17 having such a structure is wound around the frame 8a of the motor 8 as shown in FIGS. 2 to 4. With the side of the flexible substrate 17 provided with the adhesive tape 21 facing inside, first attach the wiring portions 18 and 18.
The formed portion is applied to the outer peripheral surface of the frame 8a of the motor 8 and fixed to the outer peripheral surface of the frame 8a with an adhesive tape 21. Here, the wiring section 18 of the flexible substrate 17
．． A conductive wire exposed from the insulation coating of the internal signal line 12.12 is applied to one end of each of the internal signal lines 12 and 18, and the connection is fixed by soldering using a solder solder 23. Further, external signal lines 14 are connected to each other end of the wiring portion 18.18 of the flexible substrate 17.
．． The conductive wire exposed from the insulation coating 14 is applied and soldered using solder solder 23 to fix the connection. As a result, the internal signal line 12.12 and the external signal line 14.14 are connected via the wiring section 18.18 of the flexible substrate 17.

Next, the flexible substrate 17 is wound around the outer peripheral surface of the motor frame 8a along the circumferential direction, and is adhesively fixed to the outer peripheral surface with adhesive tape 21. After the flexible substrate 17 has been wound one turn around the outer circumferential surface of the motor frame 8a, the flexible substrate 1 which has already been wound once around the outer circumferential surface of the motor frame 8a and fixed with adhesive is fixed.
The adhesive tape 21 is wrapped around the outer circumferential surface of the motor frame 8a, and the adhesive tape 21 is wrapped around the outer circumferential surface of the motor frame 8a and fixed with adhesive.
Secure with adhesive. The part of the flexible substrate 17 wound in the second rotation is the same as the part of the flexible substrate 1 wound in the first rotation.
By covering the entire circumference of the portion 7, the internal signal wires 12.12 and external signal wires 14.14 connected to the wiring portions 18.18 of the flexible substrate 17 wound in the first rotation are routed to the outside. Cover and press. As a result, the wiring section 18.1
Internal signal line 12.12 and external signal line 14.8 connected to
14 is a motor frame 8a with a flexible substrate 17
It is held and fixed.

The shield portion 19 formed on the flexible substrate 17 is located at least around the entire circumference of the portion of the flexible substrate 17 that is wound around the motor frame 8a for the second time, and is located around the entire circumference of the portion of the flexible substrate 17 that is wound around the motor frame 8a for the first rotation. Set the length and position so as to cover it. As a result, the shield part 19 covers and shields the wiring part 18.18 of the part of the flexible substrate 17 wound in the first rotation and the internal signal wires 12.12 and external signal wires 14.14 connected thereto. Do this. The ground portion 20 formed on the surface facing the motor frame 8a is in contact with the outer peripheral surface of the motor frame 8a. And you can see.

The mechanical sector probe configured in this manner has wiring portions 18.
Since the internal signal line 12.12 and external signal line 14.14 are soldered to 18, the internal signal line 12.12 and external signal line 14.14 can be easily connected. In particular, since the flexible substrate 17 is adhesively fixed to the outer peripheral surface of the motor frame 8a with adhesive tape 21, the internal signal line 1
2.12 and the external signal line 14.14 can be more easily connected.

A shield part 19 in which a connecting part between the internal signal line 12.12 and the external signal line 14.14 is formed on the flexible substrate 17.
It can be covered with a good electrostatic shield.

By wrapping and fixing the flexible substrate 17 around the motor frame 8a twice, the internal signal line 1
2.12 and the external signal line 14.14, and shielding the connection between the internal signal line 12.12 and the external signal line 14.12.
14 to the motor frame 8a can be performed at the same time, and there is no need to perform a special work to fix the internal signal fjl 12.12 and the external signal line 14.14 to the motor frame 8a. The parts for fixing the internal signal line 12.12 and the external signal line 14.14 to the motor frame 8a can be used in common with the part for shielding the connection between the internal signal line 12.12 and the external signal line 14.14. The number can be reduced.

In addition, although the motor was explained as a drive source part in the above-mentioned Example, it is not limited to this and garlic etc. can also be applied.

[Effects of the Invention] As explained above, according to the mechanical sector probe of the ultrasonic diagnostic apparatus of the present invention, the flexible flexible probe in which the wiring part and the shield part are arranged side by side in order to connect the inward signal line and the external signal line A substrate is provided, and this flexible substrate is wound around the outer peripheral surface of the motor with the wiring portion and shield portion forming surface facing outward, and an internal signal line and an external signal line are connected to the wiring portion to form a shield portion of the flexible substrate. This portion covers the wiring section forming surface of the flexible substrate and the internal signal lines and external signal lines connected to the wiring section.

Therefore, since the internal signal line and the external signal line are soldered to the wiring portion formed at the same location on the flexible substrate, the internal signal line and the external signal line can be easily connected. Furthermore, since the connecting portion between the internal signal line and the external signal line is covered with the shield portion formed on the flexible substrate, a high shielding effect can be obtained for the connecting portion.

Furthermore, the flexible board has an adhesive layer on the surface that contacts the outer circumferential surface of the motor, and since it is bonded to the outer circumferential surface of the motor with this adhesive layer, the flexible substrate is adhesively fixed to the outer circumferential surface of the motor frame with adhesive tape. The signal line and the external signal line can be connected more easily. moreover,
By wrapping the flexible circuit board around the motor frame, it is possible to simultaneously shield the connections between internal and external signal lines and fix the internal and external signal lines to the motor frame. There is no need to perform special work to fix the internal signal line and external signal line to the motor frame. In addition, the part that fixes the internal signal line and external signal line to the motor frame can be shared with the part that shields the connection part between the internal signal line and external signal line, reducing the number of parts.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, Figure 1 is a sectional view showing the entire mechanical sector probe, and Figures 2 and 3 are diagrams showing the configuration of wiring signal lines to the probe body. , FIG. 4 is an explanatory diagram showing a flexible board wrapped around the probe body, FIG. 5 is a diagram showing the flexible board, and FIGS. 6 and 7 are diagrams showing a conventional mechanical sector probe. 1. ... Probe body, 6... Ultrasonic transducer, 8...
- Motor, 12... Internal signal line, 16... External signal line, 17... Flexible board, 18... Wiring section,
19... Shield part, 21... Adhesive tape.

Claims (2)

[Claims] (1) A probe main body, an ultrasonic transducer provided in the probe main body, a drive source part provided in the probe main body that drives the ultrasonic transducer, and a drive source provided inside the probe main body that drives the ultrasonic transducer; The flexible board includes an internal signal line connected to the sonic transducer, an external signal line drawn into the probe body from the outside, and a wiring part and a shield part arranged side by side. and is wound around the outer circumferential surface of the drive source section with the shield part forming surface facing outward, and the internal signal line and the external signal line are connected to the wiring part, and the part where the shield part is formed forms a wiring part. A mechanical sector probe for an ultrasonic diagnostic apparatus, characterized in that the probe covers a surface and the internal signal line and the external signal line connected to the wiring section. (2) The ultrasonic diagnostic apparatus according to claim 1, wherein the flexible substrate has an adhesive layer on a surface that contacts the outer circumferential surface of the drive source section, and is bonded to the outer circumferential surface of the drive source section by the adhesive layer. Mechanical probe.