close

Вход

Забыли?

вход по аккаунту

?

JPS63154168

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS63154168
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
mechanical sector scanning ultrasonic probe used in medical ultrasonic diagnostic apparatuses,
ultrasonic flaw detectors and the like. 2. Description of the Related Art In recent years, in medical
ultrasonic diagnostic apparatuses, ultrasonic flaw detection apparatuses, etc., a plurality of
ultrasonic vibrations are caused to a rotor driven to rotate a sector scan of a subject continuously
and smoothly. A mechanical sector scanning ultrasonic probe having a probe is used. Heretofore,
as this type of ultrasonic probe, for example, a construction as described in JP-A-57-113692 is
known. The conventional ultrasonic probe will be described below with reference to FIG. FIG. 5
shows an acoustic element unit constituting an ultrasonic probe. As shown in FIG. 4, the backing
material 42 is fixed to the back surface of the piezoelectric vibrator 41 by the fixing agent, and
the convex acoustic lens 43 is fixed to the front surface of the piezoelectric vibrator 41 by the
fixing agent. A back load member 42 and an acoustic lens 43 are held in a fixed state by a
holding member 44. The acoustic element unit 45 configured in this way is fixed to a mounting
hole formed in a rotor (not shown). Problems to be Solved by the Invention However, in the
configuration of such a conventional example, since the convex acoustic lens 43 is usually
formed of many soft silicone rubbers, the workability of fixing is poor. Therefore, the layer of the
adhesive becomes thick, air bubbles remain, and the central axes of the piezoelectric wave
vibrator 41 and the acoustic lens 43 are easily deviated at the time of fixation, resulting in
problems such as inferior acoustic beam characteristics. Therefore, the present invention is
intended to provide an ultrasonic probe capable of improving the workability of fixing and
further improving the characteristics of an acoustic beam. The means for solving the problems
and the technical means of the present invention for solving the above problems consist of the
acoustic lens and the outer cylindrical portion of the outer periphery of the back surface
integrally formed of polymer resin. A space is formed between the inner cylindrical portion and
03-05-2019
1
the outer cylindrical portion, a plurality of split grooves are formed in the inner cylindrical
portion, and the ultrasonic transducer is inserted into the inner cylindrical portion and the fixing
agent is formed. And the outer cylindrical portion is mounted in a mounting hole formed in the
rotor. Operation The action of this technical means is as follows. That is, uniform curvature can
be obtained by forming a large number of acoustic lenses using a polymer resin, and by inserting
and fixing an ultrasonic transducer in the inner cylindrical portion integrally formed with the
acoustic lenses, acoustics can be obtained. The center axes of the lens and the ultrasonic
transducer can be made to coincide with each other, and part of the adhesive for fixing the
ultrasonic transducer is between the split groove of the inner tubular portion and the portion
between the inner tubular portion and the outer tubular portion. In addition, air bubbles can be
released as well as the layer thickness of the adhesive which becomes an attenuation component
of ultrasonic waves can be kept constant.
Embodiments of the present invention will be described with reference to the attached drawings.
1 to 4 show an ultrasonic probe according to an embodiment of the present invention, and FIG. 1
is a perspective view from the back side of an acoustic lens, and inner and outer cylindrical
portions, and FIG. 1 is a cross-sectional view of an acoustic element unit corresponding to the
line II in FIG. 1, FIG. 3 is an exploded perspective view of a rotor and an acoustic element unit,
and FIG. 4 is a cross-sectional view of the whole. First, the entire ultrasonic probe will be
described. As shown in FIG. 2, the case 1 is composed of a front case 2 and a rear case 3. In the
case 1, a support stand 4 and a support frame 5 are attached. A shaft 8 of a rotor 7 to which a
plurality of acoustic element units 6 are fixed is rotatably supported on the tip end side of the
pair of shaft support portions 5a and 5b of the support frame 5 as described later. An
intermediate shaft 9 is rotatably supported by bearings 10a and 10b on a shaft support 5C
provided at the base of the one shaft support 5a and the inner side of the other shaft support 5b.
Pulleys 11 and 12 are mounted on the shaft 8 and the intermediate shaft 9, and a belt 13 is hung
around these pulleys 11.12. A motor 14 is attached to the support base 4 and a helical gear (not
shown) mounted on the output shaft 15 is inserted into the support base 4 and the bottom plate
of the support frame 5 through the output shaft 15 of the motor 14 The gear wheel 16 is
mounted on a gear wheel 16 mounted on the upper surface 9 of the vehicle. A liquid contact
medium 17 is enclosed in the front case 2. Accordingly, the intermediate shaft 9 is rotated by the
drive of the motor 14 through the helical gear 16, and the rotor 7 is rotated through the pulley
12, the belt 13 and the pulley 11 by the rotation of the intermediate shaft 9. Along with this
rotation, the acoustic element unit 6 transmits and receives ultrasonic waves in a range of a fixed
rotation angle, and transmits the information to the ultrasonic diagnostic apparatus main body
(not shown). Next, the configurations of the acoustic element unit 6 and the rotor 7 will be
described. In the present embodiment, the rotor 7 is equipped with three acoustic element units
6. As shown in FIG. 3, the rotor 7 as a whole is formed in a substantially triangular prism shape,
and mounting holes 18 are formed from each surface side. The details of the acoustic element
unit 6 mounted in each mounting hole 18 will be described. As shown in FIGS. 1 and 2, the
03-05-2019
2
surface of the acoustic lens 19 is recessed at a constant curvature. A circular inner cylindrical
portion 20 and an outer cylindrical portion 21 are integrally formed on the outer periphery of
the rear surface of the acoustic lens 19, and a ridge 22 is formed on the outer periphery of the
acoustic lens 19. A space 23 is formed between the inner cylindrical portion 2 o and the outer
cylindrical portion 21, and a plurality of split grooves 24 are formed in substantially equal
positions in the inner cylindrical portion 20.
A plurality of locations between the inner cylindrical portion 20 and the outer cylindrical portion
21 are connected by reinforcing ribs 25 to prevent their deformation. The acoustic lens 19, the
inner and outer cylindrical portions 20.21 and the lip 25 are integrally formed of a polymer
resin. The ultrasonic transducer 26 is inserted into and fixed to the inner cylindrical portion 20
as shown in FIG. The ultrasonic transducer 26 is composed of a piezoelectric transducer 27, a
back load member 28 and an acoustic matching plate 29 as an example. Then, the acoustic
matching plate 29, the piezoelectric vibrator 27 and the back load member 28 are sequentially
inserted inside the inner cylindrical portion 20 and fixed by the adhesive. Since a part of the
adhesive applied between both surfaces of the piezoelectric vibrator 27 and the acoustic
matching plate 29 and the backing material 28 flows out to the space 23 through the dividing
groove 24 during the adhesion, the adhesive The thickness of the adhesive can be kept constant
even if the coating operation and the adhesion operation are performed at random, and
furthermore, air bubbles and the like do not remain in the joint and flow out into the space 23
together with the outflow of the adhesive. In the acoustic element unit 6 configured in this
manner, the central axis of the acoustic lens 19 and that of the ultrasonic transducer 26 coincide
with each other by the inner cylindrical portion 20. In this state, the outer cylindrical portion 21
of each acoustic element unit 30 is inserted into and fixed to each mounting hole 18 of the rotor
7 shown in FIG. Effects of the Invention According to the present invention, the acoustic lens is
formed of a polymer resin, so uniform curvature can be obtained, and moreover, inside the inner
cylindrical portion integrally formed with the acoustic lens. By inserting and fixing the ultrasonic
transducer, the central axes of the acoustic lens and the ultrasonic transducer can be easily and
reliably made to coincide with each other, and part of the fixing agent for fixing the ultrasonic
transducer is the inner side. It is possible to escape from the split groove of the tubular part to
the space between the inner tubular part and the outer tubular part to keep the thickness of the
adhesive constant and also to release air bubbles as well. Accordingly, the acoustic beam
characteristics can be improved. Further, since the ultrasonic transducer is fixed in the inner
cylindrical portion integrally formed with the acoustic lens as described above, the workability
can be improved.
[0002]
Brief description of the drawings
03-05-2019
3
[0003]
1 to 4 show an ultrasonic transducer according to an embodiment of the present invention, and
FIG. 1 is a perspective view from the back side of an inner and outer cylindrical portion provided
with an acoustic lens, and FIG. 1 is a cross-sectional view of an acoustic element unit
corresponding to a view for a river, FIG. 3 is an exploded perspective view of a rotor and an
acoustic element unit inserted therein, FIG. 4 is a cross-sectional view of the whole, FIG. These
are sectional drawings of the acoustic element unit used for the conventional ultrasonic probe.
1 ...... case, 6 ...... acoustic element unit, 7 ...... rotor, 14 ...... motor, 18 ...... mounting holes, 19 &
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Space grooves, 26 ......
ultrasonic transducer, 27 ...... piezoelectric vibrator, 28 ...... backing layer, 29 ... ... acoustic
matching plate. Name of Agent Attorney Nakao Toshio Other 1 person Figure 1 Figure 2 v! jj I 3
░ figure, s-i '
03-05-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
12 Кб
Теги
jps63154168
1/--страниц
Пожаловаться на содержимое документа