JP2577132B2 - Puncture adapter for ultrasonic probe - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a puncture adapter for an ultrasonic probe, and particularly to a needle holding structure of the puncture adapter.

[Prior Art] When collecting a cell diagnostic sample from a lesion of an organ in a living body, or discharging cystic fluid, tumor fluid or the like in a living body, so-called puncturing is performed.

This puncture is performed by inserting a sharp puncture needle into the living body from above the body surface. For example, after confirming the position of the affected part by X-ray photography or the like, the puncture is performed by fumbling by a skilled doctor or the like. I was

However, in such puncture by groping, it may be difficult to accurately guide the tip of the puncture needle to the affected part position.

For these reasons, puncturing using an ultrasonic diagnostic apparatus has been performed in recent years.

Puncture using this ultrasonic diagnostic device is performed by attaching a puncture adapter to the ultrasonic probe and checking the monitor of the ultrasonic diagnostic device, that is, confirming the tip position of the puncture needle and the position of the affected part. Puncture can be performed very accurately and safely.

FIG. 4 shows the appearance of a conventional puncture adapter. In addition, the ultrasonic probe and the metal fittings to the ultrasonic probe are omitted.

In the figure, a puncture adapter 10 includes a base 12 formed of a metal block, a door 14 formed of a metal plate provided on the base 12 so as to be openable and closable, and a needle holder 16 fixed to the door 14 and having a substantially V-shaped cross section. Etc.

The base 12 has a V-shaped needle groove 12A formed along the axial direction of the puncture needle 20 to be mounted.

By closing the door 14 with the puncture needle 20 inserted into the needle groove 12A, the puncture needle 20 can be pinched between the distal end surface of the needle holder 16 and the two inner surfaces of the needle groove 12A. it can.

And, although not shown, a spring is interposed between the door 14 and the base 12, and the door 14 is
It is always biased to the base 12 side.

In the drawing, reference numeral 22 denotes a setting knob for setting the diameter of the needle, which can vary the urging force of the spring and the distance between the distal end surface of the needle presser 16 and the needle groove 12A. It has become.

As described above, in the puncture adapter 10, the needle groove 12A is formed in a substantially V shape, and the needle holder 16 is also formed in a substantially V shape according to the shape of the needle groove 12A. Puncture needle
20 can be attached and fixed.

In addition, the puncture needle can open the door 14 by pressing the lever 14A of the door 14, and in a state where the puncture is performed,
The puncture adapter 10 can be removed from the puncture needle 20.

[Problem to be Solved by the Invention] However, in the above-mentioned conventional puncture adapter,
For example, when a force is applied to the puncture needle 20 from the outside or the lever 14A is inadvertently pressed, there is a problem that the puncture needle 20 is easily detached from the puncture adapter 10.

In other words, as shown in FIG.
The puncture needle 20 is formed thinner to fit the needle groove 12A.
Therefore, it is difficult to securely and safely hold the puncture needle.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a puncture adapter for an ultrasonic probe that can securely hold a puncture needle.

[Means for Solving the Problems] In order to achieve the above object, the present invention relates to a puncture adapter attached to an ultrasonic probe and detachably holding a puncture needle, wherein a shaft of the puncture needle to be held is provided. An adapter base having a V-shaped needle groove formed along a direction, and a V-shaped needle presser protruding according to the shape of the needle groove, the adapter being provided to be capable of being opened and closed with respect to the adapter base. Door and
Wherein the adapter base has at least one orthogonal groove traversing the needle groove, and the adapter door is provided with at least one protruding orthogonal press fitting into the orthogonal groove. Features.

[Operation] According to the above configuration, the adapter door is formed with the orthogonal holder perpendicular to the needle holder, while the adapter base is formed with the orthogonal groove crossing the V-shaped needle groove. Therefore, even if a force is applied to the puncture needle that separates from the distal end surface of the needle presser, the puncture needle is regulated by the orthogonal presser, and as a result, the puncture needle is securely held.

EXAMPLES Hereinafter, preferred examples of the present invention will be described.

FIG. 1 shows a preferred embodiment of a puncture adapter for an ultrasonic probe according to the present invention.

In the figure, a puncture adapter 50 includes an adapter body 52.
And a mounting bracket 54 fixed to the adapter main body 52.

That is, by attaching the mounting bracket 54 to the ultrasonic probe 56, the puncture adapter 50 can be attached to the ultrasonic probe 56.

Various types of mounting brackets 54 can be mounted on the adapter main body 52 in accordance with the shape of the ultrasonic probe 56. .

The adapter main body 52 is roughly composed of an adapter base 58 made of a metal block and an adapter door 60 attached to the adapter base 58 so as to be openable and closable.

The puncture needle 20 is held and fixed by the action of the adapter base 58 and the adapter door 60. In the present embodiment, the axial direction of the puncture needle 20 with respect to the center axis of the ultrasonic probe 56 is a predetermined direction. It is set so that it intersects at an angle.

As shown in a partially enlarged view of FIG. 2, the adapter base 58 is formed with a substantially V-shaped needle groove 58A.

The adapter base 58 is formed with a semi-cylindrical orthogonal groove 58B crossing the needle groove 58A.

In this embodiment, two orthogonal grooves 58B are formed as shown in FIG.

In FIG. 1, a needle holder 62 having a substantially V-shaped cross section is fixed to the adapter door 60 with its apex facing the center of the V-shaped needle groove 58A.

Here, the shape of the needle presser 62 is formed in accordance with the needle groove 58A, and as described above, can hold the puncture needle 20 having an arbitrary diameter.

The adapter door 60 is provided with a semi-cylindrical orthogonal holder 64 orthogonal to the needle holder 62.

In this embodiment, two orthogonal pressers 64 are provided in accordance with the orthogonal grooves 58B. Here, as understood from FIG. 3, the orthogonal presser 64 is formed with the same thickness as the needle presser 62.

In this embodiment, although not shown, a spring is interposed between the adapter base 58 and the adapter door 60.
Biased in the direction.

At the upper edge of the adapter door 60, a connection fixing plate 61A extending to the adapter base 58 is provided. And this connection fixing plate 6
In 1A, a slide groove 61b for sliding the screw shaft 65 fixed to the adapter base 58 is formed. That is, the first
By tightening the set screw 66 shown in the figure, the connection fixing plate 61A and the adapter base 58 are integrally fixed, and as a result, it is possible to prevent, for example, inadvertent opening of the adapter door 60. .

In FIG. 1, reference numeral 67 denotes a setting knob. By rotating this knob, the puncture needle 20 having an arbitrary diameter can be mounted.

 Next, the operation of the puncture adapter will be described.

As shown in FIG. 3, the puncture needle 20 is surrounded by two inner surfaces of the V-shaped needle groove 58A, a distal end surface which is the vertex of the needle presser 62, and a distal end surface of the orthogonal presser 64, It is sandwiched and fixed by each member.

In the present invention, since the orthogonal presser 64 is provided as described above, it is possible to reliably prevent the puncture needle 20 from coming off as described with reference to FIG. That is, the orthogonal presser
The puncture needle 20 that tends to come off from the needle holder 62 can be regulated by the 64.

In the present embodiment, two orthogonal pressers 64 are arranged at a predetermined interval, so that the puncture needle can be fixed and held more stably.

Then, in the present embodiment, after the puncture, the set screw 66 is loosened, and the lever 68 of the door 60 is further pushed, so that the puncture needle 20 is
The puncture adapter 50 can be removed from the device.

In the present embodiment, two semi-cylindrical orthogonal pressers are provided. However, the present invention is not limited to this. For example, a triangular pyramid or a rectangular parallelepiped may be suitably used. Also, the number of orthogonal pressers may be one, two or more, or may be formed integrally.

As described above, according to the present embodiment, the puncture needle 20 having an arbitrary diameter can be securely attached to the puncture adapter 50, and furthermore, it is possible to reliably maintain the holding state, thereby performing safe puncture. It is possible.

[Effects of the Invention] As described above, according to the puncture adapter for an acoustic wave probe according to the present invention, a puncture needle can be securely and stably held. Therefore, extremely accurate and safe puncture can be performed.

[Brief description of the drawings]

FIG. 1 is an external view of a puncture adapter for an ultrasonic probe according to the present invention, FIG. 2 is a partially enlarged view of a base, FIG. 3 is a cross-sectional view showing a section III in FIG. 2, and FIG. FIG. 5 is a top view of a conventional example. 50 Ultrasonic probe puncture adapter 52 Main body 54 Mounting bracket 58 Base 58A Needle groove 58B Right angle groove 60 Door 62 Needle holder 64 Right angle holder

Claims (1)

(57) [Claims] 1. A puncture adapter attached to an ultrasonic probe for detachably holding a puncture needle, wherein the adapter base has a V-shaped needle groove formed along the axial direction of the puncture needle to be held. An adapter door provided with a V-shaped needle retainer protruding in accordance with the shape of the needle groove, and provided to be freely openable and closable with respect to the adapter base. A puncture adapter for an ultrasonic probe, wherein at least one crossing orthogonal groove is formed, and the adapter door is provided with at least one protruding orthogonal press fitting into the orthogonal groove.