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JPH09178716

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DESCRIPTION JPH09178716
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
lens for an ultrasonic probe used in an ultrasonic probe of an ultrasonic flaw detector for
transmitting and receiving ultrasonic waves to detect an object, and a method of removing the
same.
[0002]
2. Description of the Related Art When removing a conventional ultrasonic probe lens, the
ultrasonic probe surface has a flat structure, and the lens is slid sideways for removal, or the lens
is inserted into the ultrasonic probe surface. However, the method of adhering and removing
with a weak adhesive liquid or the method of removing by force or taking a long time when
adhering with a highly adhesive liquid has been adopted.
[0003]
FIG. 2 is a perspective view of an ultrasonic probe and a lens showing one form of a conventional
lens for an ultrasonic probe and its removal method.
In FIG. 2, an ultrasonic array probe 2 in which a large number of transducers 1 are arrayed on
the entire surface is incorporated in the case 3, and the case 3 surrounds the ultrasonic probe
lens 4 attached to the ultrasonic array probe 2. The direction of the arrow shown in FIG. 2
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indicates the attachment / removal direction of the lens 4.
[0004]
SUMMARY OF THE INVENTION In order to make the conventional ultrasonic probe lens
exchangeable, when the lens is adhered with an adhesive liquid, the adhesion is maintained in
order to maintain the stability of the position after the adhesion. It is desirable to bond with a
liquid with a large force, but instead, it is preferable to slide the lens sideways and move it out of
the transducer portion for removal because removal becomes difficult. However, in this method,
since the lens is slid sideways, the structure of the case with steps on the entire surface of the
transducer can not be obtained. Also, if it is easy to slide the lens sideways, there is a problem
that the lens, which has to stay functionally correct at a certain position on the transducer
surface, moves sideways due to gravity or other slight force. That is, a large force is required to
peel the lens from the transducer surface, but a small force is sufficient to slide the lens, and it is
difficult to stop the lens from sliding for a long time, in particular. was there.
[0005]
In addition, it is preferable to surround the lens with a case because there is a meaning of slide
prevention and lens protection of the lens for the ultrasonic probe, but then the removal method
of sliding the lens can not be used, so there is a new easy method to remove the lens. is
necessary. Particularly in the case of the ultrasonic array probe 2 in which a large number of
transducers 1 shown in FIG. 2 are arranged and the lens 4 is surrounded by the case 3, a method
of easily removing the large lens 4 has become a problem.
[0006]
An object of the present invention is to solve the problems of the prior art and to provide a lens
for an ultrasonic probe having a structure for removing and facilitating a lens bonded with an
adhesive on the surface of an ultrasonic transducer and a method for removing the same .
[0007]
SUMMARY OF THE INVENTION The present invention relates to a lens for an ultrasonic probe
which is adhered to an ultrasonic probe with an adhesive material and focuses ultrasonic waves
generated by an ultrasonic transducer to focus on an object. A through hole is made to penetrate
between the surface on the ultrasonic transducer side of the lens and the surface on the subject
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side.
[0008]
Further, in the lens for an ultrasonic probe according to the present invention, the through hole
of the lens is formed in a portion of a collar provided on the outside of the ultrasonic wave
transmitting / receiving surface.
Further, in the method for removing the lens for an ultrasonic probe according to the present
invention, when removing the lens from the ultrasonic probe in which the lens for an ultrasonic
probe is adhered with an adhesive, compressed gas is sent from the through hole and the
bonding interface of the lens Peeling off the lens to allow easy removal of the lens.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below.
FIG. 1 is a perspective view of a lens for an ultrasonic probe according to an embodiment of the
present invention, showing an embodiment of the lens for an ultrasonic probe and the method
for removing the same. In FIG. 1, the ultrasonic probe lens 4 has its transducer-side surface 5
bonded to the surface of the transducer 1 of the ultrasound array probe of FIG. Is transmitted
through the medium between the lens 4 and the subject (not shown), and the ultrasonic wave at
this time is the ultrasonic wave of the lens 4. Focus within the subject by the focusing effect.
[0010]
In FIG. 1, this ultrasonic probe lens 4 is further compressed according to the present invention
between the surface 5 on the transducer side of the lens 4 and the surface 6 on the object side,
preferably between the outer flange portions of the ultrasonic transmitting / receiving surface.
For example, six through holes 7 through which gas can pass are opened. According to the
ultrasonic probe lens 4 provided with the through hole 7, when removing the lens 4 from the
ultrasonic array probe 2, the compressed gas is sent to the bonding interface of the lens 4
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3
through the through hole 7 As a result of being able to easily cause peeling in the part starting
from the through hole of the bonding interface, removal of the lens 4 is facilitated.
[0011]
According to the present invention, the lens for the ultrasonic probe is provided with holes
penetrating both surfaces such as the brim portion, so that compressed gas is sent to the lens
adhesion interface through the through hole to achieve lens bonding. Peeling can be easily
generated in the part of the interface starting from the through hole, and the lens can be easily
removed. In addition, the cost is low because it is only necessary to make holes penetrating both
surfaces in the ultrasonic probe lens. Furthermore, in the lens for an ultrasonic array probe, since
the lens area is large, the effect of facilitating the removal of the lens is particularly effective. In
addition, in the lens for the ultrasonic array probe, it is difficult to arrange a large number of
ultrasonic array probes because they are expensive compared to a single transducer ultrasonic
probe, but the focal points of ultrasonic waves are different. It is impossible to cope with various
subjects unless you Therefore, the easy replacement of the lens makes it possible to cope with
variously focused subjects by simply arranging a large number of inexpensive lenses with one
expensive ultrasonic array probe, which has a great economic effect.
[0012]
Brief description of the drawings
[0013]
1 is a perspective view of a lens for an ultrasonic probe showing an embodiment of the lens for
an ultrasonic probe and the method for removing the same according to the present invention.
[0014]
FIG. 2 is a perspective view of an ultrasonic probe and a lens showing one form of a conventional
lens for an ultrasonic probe and its removal method.
[0015]
Explanation of sign
[0016]
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Reference Signs List 1 vibrator 2 ultrasonic array probe 3 case 4 lens 5 lens vibrator side surface
6 lens object side surface 7 through hole
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