JPS61118094A - Probe for ultrasonic wave diagnosis device - Google Patents

Abstract

PURPOSE:To position an acoustic lens and an ultrasonic vibrator easily and securely by fitting and connecting an ultrasonic vibrator having a matching plate and an acoustic lens installing, to four circumferences, the side plate where a through-hole is formed. CONSTITUTION:A matching plate 2 is prepared to an ultrasonic vibrator 1. A box-shaped acoustic lens 3 is composed of a silicone rubber, etc, side plates 5 and 6 are installed in a body at the four circumferences of a convex surface acoustic lens 4 and a through hole 7 is formed at respective sides 5 and 6. In this way, adhesives are stuck to the surface of the matching plate 2 and the box-shaped acoustic lens 3 is fitted and fixed from the matching plate 2 side. Thus, the positioning for an ultrasonic vibrator 1 of the acoustic lens 3 can be executed easily and without fail and the operability is improved. The bubble and the surplus adhesives mixed from the through hole 7 of the side plate 5 at the time of bonding can be easily discharged and the ultrasonic attenuation can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a probe for an ultrasonic diagnostic device.

Conventional technology In order to focus the ultrasonic beam, a convex acoustic lens made of a substance that transmits ultrasonic waves at a slower speed than in the living body, such as silicone rubber, is fixed to the surface of a matching plate included in the transducer. 2. Description of the Related Art Probes for ultrasonic diagnostic equipment have been widely known. If a thick adhesive adheres between the acoustic lens and the matching plate when fixing the acoustic lens, it will interfere with the propagation of ultrasonic waves and attenuate the ultrasonic waves, making it impossible to obtain the original acoustic characteristics. There are various problems such as no.

As an example of a conventional probe for an ultrasonic diagnostic device of this kind, as shown in FIG.
2, and an acoustic lens 103 is fixed to this alignment plate 102 with an adhesive such as silicone rubber.

Another example of a conventional probe for an ultrasonic diagnostic device is a box-shaped acoustic lens 10 in which side plates 10S and 106 are arranged around the four circumferences of an acoustic lens 104, as shown in FIGS. 4 and 5.
7, this box-shaped acoustic lens 107 is fitted to the matching plate 102 side provided in the ultrasonic transducer 1o1, and adhesive 10B is applied.
It is firmly fixed.

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 not aligned without deviation through the alignment plate 102, the focal point position of the ultrasonic wave cannot be adjusted. However, the acoustic lens 103 usually has a
Since silicone rubber is used and the convex end face in the short axis direction is thin, the above positioning is difficult. In the latter case, the acoustic lens 104 can be easily aligned with the ultrasonic transducer 101. However, since side plates 105 and 106 are provided around the four circumferences of the acoustic lens 104, the box-shaped acoustic lens 108 and the matching plate 10
Bubbles tend to accumulate at the boundary with 2, making it difficult to remove bubbles. The air layer acts as a reflector for the transmission of ultrasonic waves, which is unfavorable in terms of the uniformity of the probe. To prevent this problem, the side plates 10S, 1
The clearance between the ultrasonic transducer 101 and the alignment plate 102 of 08 may be increased, but if the clearance is increased in this way, accurate alignment cannot be performed.

Therefore, one aspect of the present invention is to easily and reliably align the acoustic lens with the ultrasonic transducer, improve workability, and eliminate air bubbles that occur when bonding with adhesive. An object of the present invention is to provide a probe for an ultrasonic diagnostic device that can easily transmit ultrasonic waves and can further prevent attenuation of ultrasonic waves by discharging excess adhesive. That is.

Means for Solving the Problems The technical means of the present invention for solving the above problems are as follows:
An ultrasonic transducer having a matching plate, and a box-shaped acoustic lens in which side plates are arranged around the four circumferences of the acoustic lens, a through hole is formed in each side plate, and the box-shaped acoustic lens is fitted onto the matching plate side and fixed with adhesive. It is prepared.

Function: The present invention allows the acoustic lens to be easily and reliably aligned with the ultrasonic transducer using the side plate, and the through holes formed in the side plate eliminate air bubbles when the acoustic lens is fixed with adhesive. can be removed, and excess adhesive can be discharged.

EXAMPLE Hereinafter, an example 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 equipped with a matching plate 2. As shown in FIGS. The box-shaped acoustic lens 3 is made of silicone rubber or the like, and has side plates 5 on the four circumferences of the convex acoustic lens 4.
6 are integrally provided. Through holes 7 in each side plate 6, 6
is formed. A plurality of through holes 7 are formed in the side plates 5 on the long sides, and these through holes 7 are arranged alternately 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 as to prevent rattling during fitting and to enable tight fitting.

Then, adhesive is applied to the surface of the matching plate 2, and the box-shaped acoustic lens 3 is fitted and fixed from the matching plate 2 side.

During the fixing, the side plates 5 and 6 allow the acoustic lens 4 to be easily and reliably aligned with respect to the ultrasonic transducer 1. Further, during fixation, excess adhesive and air bubbles can be discharged to the outside through the through hole 7. After fixing, the adhesive protruding from 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 and there is no hole.

Note that it is preferable to form the through hole at the bonding site between the box-shaped acoustic lens 3 and the matching plate 2 in order to facilitate the discharge of excess adhesive and air bubbles.

Effect of the invention As is clear from the above description, according to the present invention.

A box-shaped acoustic lens is formed by connecting side plates around the four circumferences of the acoustic lens, forming through holes in each side plate, and fitting this box-shaped acoustic lens from the matching plate side of the ultrasonic transducer to form an adhesive. I try to make it stick well. Therefore, the acoustic lens can be easily and reliably aligned with the ultrasonic transducer using the side plate, and work efficiency can be improved. In addition, air bubbles and excess adhesive that were mixed in during bonding can be easily discharged from the through holes in the side plate, which allows for good transmission of ultrasonic waves and prevents attenuation of ultrasonic waves. can.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a probe for an ultrasonic diagnostic device according to an embodiment of the present invention, Fig. 2 is a perspective view of a box-shaped acoustic lens of the probe, and Fig. 2 is a conventional ultrasonic diagnostic probe. FIG. 4 is a cross-sectional view showing another example of a conventional probe for an ultrasonic diagnostic device, and FIG. 5 is an exploded perspective view of the same. 1... Ultrasonic vibrator, 2... Matching plate,
3...Box-shaped acoustic lens, 4...Acoustic lens, 6, 6...Side plate, 7...Through hole. Name of agent: Patent attorney Toshio Nakao and one other name
1 Figure 3 Figure 4

Claims (2)

[Claims] (1) A box-shaped ultrasonic transducer having a matching plate and side plates arranged around the four circumferences of the acoustic lens, a through hole formed in each side plate, and fitted to the matching plate side and fixed with adhesive. A probe for an ultrasound diagnostic device characterized by being equipped with an acoustic lens. (2) The probe for an ultrasonic diagnostic apparatus according to claim 1, wherein the through hole is formed so as to be located at a bonding site between the acoustic lens and the alignment plate.