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JPS61118094

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DESCRIPTION JPS61118094
[0001]
TECHNICAL FIELD The present invention relates to a probe for an ultrasonic diagnostic
apparatus. In order to focus an ultrasonic beam, a convex acoustic lens formed of a material
having a lower ultrasonic transmission speed than in a living body, such as silicon rubber, is fixed
to the surface of a matching plate provided on the transducer. Probes for ultrasonic diagnostic
equipment are conventionally and widely known. When the adhesive adheres thickly between the
acoustic lens and the matching plate when this acoustic lens is fixed, the propagation of the
ultrasonic wave is hindered and the attenuation of the ultrasonic wave occurs to obtain the
original sound wave characteristics. There are various problems such as no. As shown in FIG. 3, a
conventional probe for an ultrasonic diagnostic apparatus of this type is provided with a
matching plate 1o2 on an ultrasonic transducer 101, and the acoustic lens 103 is bonded to the
matching plate 102, such as silicone rubber. It is fixed by the agent. As still another example of a
conventional probe for an ultrasonic diagnostic apparatus, as shown in FIGS. 4 and 5, side plates
10S and 106 are continuously connected to the four circumferences of the acoustic lens 104 to
form a box-shaped acoustic lens 107. The box-shaped acoustic lens 107 is fitted on the side of
the matching plate 102 provided in the ultrasonic transducer 1 o 1 and fixed by an adhesive 10
B. Problems to be Solved by the Invention However, in the former case, if the short axis center of
the ultrasonic transducer 101 and the convex center of the acoustic lens 103 are aligned without
shifting through the alignment plate 102, the focusing point position of the ultrasonic wave is
not Although misalignment occurs, silicon rubber is usually used for the acoustic lens 103, and
the convex short-axis end face has a thin shape, which makes the above alignment difficult. In the
latter case, alignment of the acoustic lens 104 with the ultrasonic transducer 101 can be easily
performed. However, since the side plates 105 and 106 are provided on the four circumferences
of the acoustic lens 104, air bubbles are easily accumulated at the boundary between the boxshaped acoustic lens 108 and the matching plate 102, and it is difficult to degas. The air layer is
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a reflector for the transmission of ultrasonic waves, which is not preferable from the perspective
of the probe. In order to prevent this problem, it is sufficient to increase the clearance of the side
plates 10S, 108 with respect to the ultrasonic transducer 101 and the alignment plate 102.
However, if the clearance is increased as described above, accurate alignment can not be
performed. Therefore, according to the present invention, the positioning of the acoustic lens
with respect to the ultrasonic transducer can be performed easily and reliably, the workability
can be improved, and the bubbles generated when adhering with the adhesive can be removed.
Provide a probe for an ultrasonic diagnostic apparatus capable of facilitating the transmission of
ultrasonic waves and discharging the excess adhesive to prevent the attenuation of the ultrasonic
waves. It is said that.
Means for Solving the Problems The technical means of the present invention for solving the
above problems is that an ultrasonic transducer having a matching plate and a side plate are
connected to four circumferences of an acoustic lens, and each side plate passes through. A hole
is formed, and it is equipped with the box-shaped acoustic lens fitted by the said alignment plate
side and fixed by the adhesive agent. The present invention makes it possible to position the
acoustic lens with respect to the ultrasonic transducer easily and reliably by the above-mentioned
side plate, and a bubble when the acoustic lens is fixed with the adhesive by the through hole
formed in the side plate. Can be removed, and excess adhesive can be discharged. Embodiments
Hereinafter, an embodiment of the present invention will be described in detail with reference to
the drawings. As shown in FIGS. 1 and 2, the ultrasonic transducer 1 is provided with a matching
plate 2. The box-shaped acoustic lens 3 is made of silicone rubber or the like, and side plates 5
and 6 are integrally provided on the four circumferences of the convex acoustic lens 4. A through
hole 7 is formed in each of the side plates 6, 6. The through holes 7 of the side plates 5 on the
long side are formed at a plurality of places, and the through holes 7 are alternately arranged
between the opposing side plates 6 to maintain the strength of the box-shaped acoustic lens 3.
The ultrasonic transducer 1 and the matching plate 2; The side plates 5 and 6 of the box-shaped
acoustic lens 3 are set so that they can be closely fitted without rattling at the time of fitting. The
adhesive is coated on the surface of the aligning plate 2 and the box-shaped acoustic lens 3 is
fitted and fixed from the aligning plate 2 side. At the time of fixing, the acoustic lens 4 can be
easily and reliably aligned with the ultrasonic transducer 1 by the side plates 5 and 6. At the time
of fixation, excess adhesive and air bubbles can be discharged from the through hole 7 to the
outside. After fixing, the adhesive which has come out of the through hole is cut and finished
along the side plates 5 and 6 of the box-shaped acoustic lens 3, so that the through hole is closed
from K, resulting in no holes. The position of the through hole is preferably formed at the
bonding site of the box-shaped acoustic lens 3 and the alignment plate 2 in order to facilitate the
discharge of the excess adhesive and air bubbles. The effect of the invention According to the
invention as is apparent from the above description. Side plates are continuously provided on the
four circumferences of the acoustic lens, and through holes are formed in each side plate to form
a box-shaped acoustic lens, and this box-shaped acoustic lens is fitted from the matching plate
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side of the ultrasonic transducer to form an adhesive I try to fix it. Accordingly, alignment of the
acoustic lens with respect to the ultrasonic transducer by the side plate can be performed easily
and reliably, and the workability can be improved. In addition, air bubbles and excess adhesive
mixed during adhesion can be easily discharged from the through holes of the side plate,
whereby ultrasonic waves can be transmitted favorably and ultrasonic wave attenuation is
prevented. it can.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a cross-sectional view of a probe for an ultrasonic diagnostic apparatus in an
embodiment of the present invention, FIG. 2 is a perspective view of a box-shaped acoustic lens
of the probe, and FIG. An exploded perspective view of the device probe, FIG. 4 is a crosssectional view showing another example of a conventional ultrasonic diagnostic device probe,
and FIG. 5 is an exploded perspective view thereof.
1 иииииии Ultrasonic transducer, 2 ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Acoustic ... Side
plate, 7 ... ... Through hole. Name of Agent Attorney Nakao Toshio Other 1 restaurant 1 Figure 1
Figure 3 Figure 4
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