close

Вход

Забыли?

вход по аккаунту

?

JPH0698389

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 JPH0698389
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to high
pressure resistant hydrophones, and more particularly to a high pressure resistant hydrophone
for measuring shock waves from a medical stone crusher.
[0002]
BACKGROUND OF THE INVENTION In recent years, with the development of medical devices, it
has been carried out, for example, that a calculus formed in the kidney is crushed by an external
shock wave, which is known as a calculus crushing apparatus. Generally, the ultrasound from the
ultrasound generator is focused (focused) on the calculus to generate a shock wave. The shock
wave in such a thing is said to be about 1000 atmospheres or more at the time of calculus
fracture. And, high pressure resistant hydrophones have been proposed as measures of these
shock wave levels and the like to clarify causation of calculus fracture. For example, there is one
according to the present application as one of such things (high pressure-resistant hydrophone of
patent application dated July 31, 1992, reference number P9206300).
[0003]
2. Description of the Related Art FIG. 3 (abc) illustrates an example of such a high pressure
resistant hydrophone, wherein FIG. 3 (a) is a sectional view, FIG. 3 (b) is a plan view of a
04-05-2019
1
polymeric piezoelectric material, and FIG. The figure (c) is a figure of a cylindrical support. The
high pressure resistant hydrophone is provided with the polymeric piezoelectric material 2 on
one end surface side of the cylindrical container 1 which is a detection surface of a shock wave.
The cylindrical container 1 is closed at one end surface side (opening) by the protective plate 3.
The polymeric piezoelectric material 2 is made of, for example, PVDF (polyvinylidene fluoride),
and includes an excitation unit 4 and a lead-out unit 5 (ab). An excitation electrode 6 (ab) is
formed on both main surfaces of the excitation unit 4, and an extraction electrode 7 (ab) is
formed on the extraction unit 5. The front surface of the excitation unit 4 is in contact with the
protective plate 3, and a damper 8 is provided on the rear surface. The lead portion 5 (ab) is bent
and bonded to the side surface of the damper 8 and is connected to each line of the coaxial cable
9. The damper 8 is held at its rear end by a cylindrical support 11 movable by a spring 10. A socalled pressure bonding method in which the polymeric piezoelectric material 2 is pressed by a
spring 10 is used. However, if necessary, an adhesive is interposed between the polymeric
piezoelectric material 2 and the damper 8 and the protective plate 3 as needed. In the figure,
reference numeral 21 is a fixing plate, 13 is a waterproofing adhesive, and 14 is a coaxial
dedicated connector (BNC) provided at the end of the coaxial cable 9 and connected to the
terminal of the measuring instrument .
[0004]
However, the high withstand pressure hydrophones of the above-mentioned construction lead
out the coaxial cables to which the connectors are connected from the other end side of the
cylindrical container respectively. Therefore, the utilization efficiency of the coaxial cable and the
connector is low, and there is a problem that the storage tends to be complicated.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a high pressure
resistant hydrophone which can be stored compactly with high utilization efficiency.
[0006]
According to the present invention, the other end face side of the above-mentioned cylindrical
container is connected to each line of a coaxial cable electrically connected to the lead-out
portion of the polymeric piezoelectric material, and the connector connected to the coaxial cable
is attached and detached. The solution means is that the connecting end is freely mounted.
04-05-2019
2
Hereinafter, one embodiment of the present invention will be described.
[0007]
DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a partial sectional view of a high
pressure resistant hydrophone for explaining an embodiment of the present invention. The same
reference numerals are given to the same parts as in the prior art example and the description
will be simplified. As described above, in the high pressure resistant hydrophone, the polymeric
piezoelectric material 2 is provided on one end face side of the cylindrical container 1 serving as
a shock wave detection surface, the lead-out portion 5 is led out by the coaxial cable 9, and the
damper 8 is interposed. It is made to press and make it press with a spring 10. And, in this
embodiment, the coupler 15 is provided on the other end face side of the cylindrical container 1.
The coupler 15 has a screw portion 18 having a hole 17 on one end side of the metal cylinder 16
and a circumferential groove 19 and the other end side is an open end. The screw portion 18 is
screwed into the inner periphery of the other end face side of the cylindrical container 1, and the
waterproof rubber-like ring 20 is fitted into the circumferential groove 19. A terminal plate 21 is
fitted to and fixed to the end of the opening end. The terminal plate 21 is formed by providing
the metal plate 25 divided by the groove 24 on the resin substrate 23 having the through holes
22. Each line of the coaxial cable is electrically connected to the metal plate 25 through the hole
17 of the screw portion 18 and the through hole 22 of the terminal plate 21. Then, in actual use,
as shown in FIG. 2, a tubular connector 28 having a built-in contact pin 26 and derived from the
coaxial cable 27 is prepared, and is detachably mounted on the coupler 15 for use. . A BNC is
provided at the tip of the coaxial cable 27. In the figure, reference numeral 29 is a fixing plate,
and 30 is a fixing adhesive which also serves as waterproof.
[0008]
With such a configuration, the high pressure resistant hydrophone does not lead out the coaxial
cable from the rear end face of the cylindrical container 1 and therefore becomes rational in
management and improves the utilization efficiency. For example, even if breakage occurs due to
shock wave measurement, it is sufficient to replace only the high pressure resistant hydrophone
(cylindrical container 1), and in the end, one and a plurality of cylindrical connectors 1 are
prepared. If so, a plurality of high pressure resistant hydrophones are prepared.
[0009]
04-05-2019
3
[Other matters] In the above embodiment, although the so-called pressure-bonding system in
which the polymeric piezoelectric material 2 is pressed by the spring 10 is used, the bonding
system described in the patent application at the beginning may be used. The high-polymer
piezoelectric material 2 provided with the lead-out portion 5 is provided on the damper 8 and
accommodated, the coupler 15 is provided on the other end surface side, and the method of
connecting to the coupler 28 derived from the coaxial cable It belongs to the technical scope of
the present invention. The coupler 15 is not limited to the one of the embodiment but can be
freely changed, and the main point is that the coupling end which substantially connects the
other end face of the cylindrical container 1 to the connector is the coupler referred to here .
Further, although the connector BNC is used, it is needless to say that other connectors may be
used.
[0010]
According to the present invention, the other end face side of the above-mentioned cylindrical
container is connected to each line of the coaxial cable electrically connected to the lead-out
portion of the polymeric piezoelectric material, and the connector to which the coaxial cable is
connected is obtained. Since the connecting end is detachably mounted, it is possible to provide a
high-pressure resistant hydrophone which can be stored compactly with high utilization
efficiency.
04-05-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
12 Кб
Теги
jph0698389
1/--страниц
Пожаловаться на содержимое документа