JPH0713689Y2 - Auxiliary tool for puncture needle insertion - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a puncture needle insertion aid for fixing a puncture needle when performing puncture based on, for example, an ultrasonic tomographic image.

[Prior Art] Accurately inserting a puncture needle into a specific part of a living body based on a tomographic image obtained from a tomographic imaging device such as an ultrasonic scan scanner is, for example, when performing cell diagnosis of that part or It is very important for definitive diagnosis, as can be seen even when injecting a contrast agent or the like. By the way, since this puncture needle may use needles of various diameters, it has a mechanism provided with a replaceable adapter that matches the diameter of the needle.

[Problems to be Solved by the Invention] In a conventional puncture guide, as shown in FIG. 3, a guide sleeve introducing portion 101 having a taper is provided, and the guide slave 102 is press-fitted and fixed by using this taper, or As shown in FIG. 4, the guide sleeve 102 is fixed by screws 103. For fixation by pressure, the attachment / detachment operation is simple, but the fixation position differs depending on the force applied when press-fitting, and as a result, there is a possibility that the guide sleeve will fall off and the fixation position will shift Hinders Further, in the case of fixing with screws, although the fixing position is accurately determined, the fixing operation is complicated, and there is a possibility that the screws will be lost, and the number of parts will increase due to the prevention mechanism of the screws coming off. Problems arise.

The present invention is intended to improve the attachment / detachment operability and the positioning accuracy of such a guide sleeve, and an object thereof is to propose a puncture needle insertion auxiliary tool that can be mounted and positioned by one-touch.

[Means for Solving the Problem] The problem is to include a puncture adapter and a puncture needle guide sleeve that are united by an engaging member having at least two protrusions and recesses, and a pressure contact material that presses and holds the united body. This is achieved by a characteristic puncture needle insertion aid.

Further, the puncture adapter has a fin extending toward the puncture guide sleeve on an engaging surface, the puncture needle guide sleeve includes an engaging portion that engages with the fin, and the fin is engaged to allow the union to be performed. It is achieved by an auxiliary tool for inserting a puncture needle, which is further characterized in that

Further, the needle guide groove formed in the puncture needle guide sleeve is substantially V-shaped, which is achieved by the puncture needle insertion auxiliary tool.

[Embodiment] FIG. 1 shows an external appearance of a puncture needle exchange adapter equipped with a puncture needle insertion assisting tool according to an embodiment of the present invention.
Reference numeral 10 is a pointing arm. An ultrasonic probe is provided in the pointing arm 10.
20 is provided, and an auxiliary tool for inserting a puncture needle is attached to the pointing arm 10.
30 (hereinafter simply referred to as an auxiliary tool) is screwed, the puncture needle 40 is introduced into the vicinity of the site 50 at an angle formed by the auxiliary tool, and a target specimen is collected.

The auxiliary tool 30 will be described in detail with reference to FIG.

The assisting tool 30 is an adapter body 301 for fixing to the indicating arm 10 with a screw, an upright portion 302 that makes an angle for directing the puncture angle to the sample collection point on the body 301, and a guide sleeve at the tip of the upright portion 302 And an engagement surface 303.

The engagement surface 303 has two protrusions 304 separated by a predetermined distance.
Has been drilled. Reference numeral 305 is a fin that stands upright from the engagement surface 303 for ensuring / regulating the stability of engagement.

A pressure contact plate 306 is provided on the multi-end bracket 307 of the fin 305, and is constantly urged in the protrusion direction by a spring (not shown). The press plate 306 is opened and closed by a lever 308.

On the other hand, 310 is a guide sleeve, and the needle 4
In order to guide 0, for example, a V-shaped groove 311 is formed. The shape of the groove 310 may be substantially V-shaped or substantially U-shaped. The guide sleeve 310 engages with the engagement surface 303, and the engagement state is held by the press contact plate 306.
Two fitting holes 312 are drilled in the area where 04 is fitted, and the projection 304
The structure is provided with a flat recess 313 in which the fin 305 fits tightly when fitted into the hole 312 in the substantially central portion.

[Operation] In the present embodiment, the pressure contact plate is used as an example of the pressure contact material, but it goes without saying that a means such as a rod may be used instead of the plate as the means for pressing and suppressing.

With the above-described structure, first, the lever 308 is grasped and the pressure contact plate 306 is opened. Then, the guide sleeve 310 is engaged with the engaging surface so that the projection 304 is fitted in the fitting hole 312, and the fin 305 is pushed until it is sufficiently fitted in the flat recess 313, and then the lever 308 is released and the press plate is pressed. The guide sleeve is pressed at 306 to complete the mounting.

Therefore, the conversion of the guide sleeve accompanying the replacement of the puncture needle is as simple as possible with one touch, and the engagement position of the guide sleeve is accurately regulated by the protrusion of the adapter body, so the accuracy of the directionality of the needle 40. Will be high.

[Effects of the Invention] As described in detail above, the puncture needle insertion aid of the present invention allows the puncture needle guide sleeve to be attached and detached easily with one touch, and the puncture needle can be introduced only by this attachment. Properly determined. Therefore, it is possible to quickly and accurately deal with the exchange of puncture needles having different diameters.

[Brief description of drawings]

FIG. 1 is a side view for explaining the attachment and assembly of a puncture needle insertion aid according to an embodiment of the present invention, and FIG. 2 is the attachment and assembly of a puncture needle insertion aid according to an embodiment of the present invention. FIGS. 3 and 4 are perspective views showing a conventional example of the present invention. In the figure, 301 ... Adapter body, 302 ... Standing portion, 303 ... Engaging surface, 304 ... Projection, 305 ... Fin, 306 ... Pressure contact plate, 307 ... Bracket, 308 ... Lever, 309 ..., 310 ... Guide sleeve, 3
11 ... Groove, 312 ... Fitting hole, 313 ... Flat recess.

Claims (2)

[Scope of utility model registration request] 1. A puncture needle insertion aid characterized by comprising a puncture adapter and a puncture needle guide sleeve which are united by an engagement member having at least two irregularities, and a pressure contact material which press-contacts and holds this united body. Ingredient 2. The puncture adapter has a fin that extends toward the puncture needle guide sleeve on an engaging surface, and the puncture needle guide sleeve includes an engaging portion that engages with the fin.
The puncture needle insertion aid according to claim 1, wherein the fitting is further regulated by engagement of the fins.