JP2001161683A - Puncture adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a puncture adapter having a structure capable of being attached to or detached from an ultrasonic probe main body by an easy operation, and having a reliable fixing, easy detachability, and an accurate puncture guide function. . SOLUTION: A holder 1 and a guide 2 are provided.
2 is arranged at a predetermined intermediate position. By grasping the knob 6 by hand, the holder 1 opens with the pivot 12 as a fulcrum, and the probe is clamped. The guide portion 2 is inserted into the knob portion 6 to prevent the holder portion 1 from opening unintentionally. The guide 2 is changed according to the type of puncture needle and the insertion angle. Required 1
A spring 9 is arranged around the center 2 to generate a pressing force for holding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a puncture adapter, and more particularly, to a puncture adapter mounting and a puncture needle guide used in combination with an ultrasonic probe.

[0002]

2. Description of the Related Art Conventionally, an image rendering apparatus using an ultrasonic wave has been used in various technical fields. For example, for medical use, an ultrasonic probe is provided with an ultrasonic probe and a part to be examined present in the body of a subject. Ultrasound diagnostic imaging devices that render images are practically used and widely used.

[0003] The ultrasonic probe included in these ultrasonic diagnostic imaging apparatuses has an ultrasonic transducer inside a portion of the distal end portion that comes into contact with the body surface of the subject. This ultrasonic transducer is mainly composed of a piezoelectric vibrator, and irradiates an ultrasonic wave toward a part to be examined of a subject. The irradiated ultrasonic waves are present at the examination target site and become reflected ultrasonic waves from a plurality of boundary surfaces having different acoustic impedances. By receiving this reflected ultrasonic wave by the piezoelectric vibrator and converting it into an electric signal, the internal state of the examination target part can be depicted as an image.

[0004] In the ultrasonic tomographic image obtained in this manner, a puncture operation is performed on a target portion drawn under observation of the ultrasonic tomographic image. This puncture is used to collect tissue at the target site, to inject a drug into the target site, or to insert a heating element for heating to perform treatment.

[0005] A puncture adapter has conventionally been used for such a puncture operation. With this puncture adapter, a puncture needle can be safely and accurately inserted into a predetermined target site under an ultrasonic image guide. The method of fixing the puncture adapter to the ultrasonic probe is roughly classified into two types: a method using a fixing band and a method of pushing the puncture adapter into the main body of the ultrasonic probe.

First, in the former fixed band system, a fixing means for fixing the ultrasonic probe to the main body of the ultrasonic probe and a puncture needle guide means for guiding the puncture needle to a predetermined angle and a predetermined position on the ultrasonic tomographic image are integrated. It is provided in. For example, the fixing means is fitted into a projection or the like provided on the exterior of the ultrasonic probe, and is fixed by a band or the like in this state. This fixing band is fastened by fixing screws or the like.

FIG. 8A shows an example of this fixed band type puncture adapter. The band is fixed by the band fixing screw 34 and is fixed to the ultrasonic probe 30 as shown in FIG. The puncture needle 32 is inserted into the guide needle hole 36 of the band-type puncture adapter 31 fixed in this manner.

FIG. 9 (a) and FIG. 9 (b) show an example of a method of pushing and fixing the ultrasonic probe 30 into the ultrasonic probe 30. The push-type puncture adapter 33 is pushed into the projection or groove provided on the main body of the ultrasonic probe 30 so as to fit, and is positioned and fixed. In this fitting, for example, the stopper protrusion 35 is fitted into a protrusion or a groove on the probe body side.

[0009]

In any of the above-mentioned conventional puncture adapter fixing systems, there is no problem in terms of the function of a guide for puncture. However, in the case of the fixed band method, for example, when attaching the ultrasonic probe to the ultrasonic probe, it is troublesome to hold the ultrasonic probe together with the puncture adapter and to fix the fixing screw with the other hand. there were.

Also, in the method of pushing and fixing, when an unintended force is applied to the puncture adapter during the puncture operation, there is a possibility that the force may cause unintended detachment from the ultrasonic probe main body. there were.

An object of the present invention is to provide a puncture adapter having a structure that can be attached to and detached from the ultrasonic probe main body by an easy operation, and that has a secure fixing, easy detachability, and an accurate puncture guide function. Make it an issue.

[0012]

According to a first aspect of the present invention, there is provided a puncture adapter used for an ultrasonic probe, wherein the puncture adapter is used to hold the ultrasonic probe by elastic force. And a puncture adapter characterized in that the puncture adapter is detachably fixed to the ultrasonic probe by the gripping means.

Further, in the present invention according to claim 2, the gripping means includes a holding means for detachably holding a puncture needle guide for guiding the puncture needle. The puncture adapter is a solution.

According to a third aspect of the present invention, the holding means is a holding means for holding the holding state of the holding means while holding the puncture needle guide. The puncture adapter according to claim 2 is a solution.

In the present invention according to a fourth aspect of the present invention, the gripping means includes an adapter fitting means having a concave-convex structure for fitting with the ultrasonic probe. The puncture adapter according to any one of (3) is a solution.

According to a fifth aspect of the present invention, the holding means includes a guide fitting means having an uneven structure for fitting the puncture needle guide. The puncture adapter described in any one of (1) to (4) is a solution.

According to a solution of the present invention, the puncture adapter is configured to be separable into a holder portion and a guide portion, and the holder portion has a so-called scissors-shaped structure. The ultrasonic probe is pinched and fixed by opening the scissors in this structure.

In a state in which the puncture adapter is mounted on the ultrasonic probe, the puncture needle guide is inserted into the knob operation portion, thereby restricting the knob operation and detaching the puncture adapter from the ultrasonic probe in an unintended state. To prevent

[0019]

FIG. 1 shows the overall schematic configuration of a puncture adapter according to an embodiment of the present invention. FIG. 1A is a view looking down from above, and FIG. 1B is a side view.

The puncture adapter 20 comprises a holder 1 and a guide 2, and the guide 2 is provided with a guide needle hole 3. Here, referring to FIG. 2, the holder section 1 is composed of two substantially symmetrical structures as shown in FIG. 2A, and is based on a combination of a holder A4 and a holder B5. The holder A4 and the holder B5 are engaged with each other at a point 12, and the holders A4 and B5 are arranged so as to be rotatable about the point 12.

An ultrasonic probe to be mounted is sandwiched in a space formed by facing the holder portion 1, and this portion is shown as a probe mounting portion 8. Further, a knob 6 is provided at a position facing the central axis by the key 12, and a guide for holding the puncture needle at a predetermined angle and guiding the insertion is provided in the space facing the knob 6. The part 2 is inserted. This space is shown as a guide mounting portion 7.

FIG. 2B is a cross-sectional view taken along a plane including the essential part 12 of FIG. 2A. Spring 9 around 12
Is arranged. The spring 9 may be a leaf spring or a spring. The stopper 11 is the guide portion 2
Is inserted into the guide mounting portion 7, this guide portion 2
Is prevented from easily falling off. The stopper 11 has a protrusion or a groove structure, and the protrusion or groove structure is similarly formed on the guide portion 2 so as to be fittable.

FIG. 3A is a view for explaining the guide portion 2, and FIG. 3B is a side view thereof. The guide portion 2 is for holding a puncture needle used for puncture at a predetermined angle and guiding the puncture needle to a predetermined portion safely and reliably at the time of puncturing. A puncture needle (not shown) is inserted into guide needle hole 3. The guide needle hole 3 is prepared in a plurality of sizes according to the gauge of the puncture needle to be used, and can be changed to the guide needle hole 3 corresponding to the gauge by exchanging the guide part 2 itself. In addition to the change of the gauge, a guide needle hole 3 having a plurality of angles for the insertion angle is prepared, and the guide portion 2 itself is exchanged according to the insertion angle.

The fitting projection 1 provided on the holder mounting portion 15
Reference numeral 3 denotes a structure for fitting into the fitting groove 10, which may be a projection structure as shown in the drawing or a groove structure. The stopper 14 is fitted to the stopper 11 and
Is prevented from easily falling off from the guide mounting portion 7.

FIG. 4 is a diagram for explaining an operation example of the puncture adapter according to the embodiment of the present invention. In FIG. 4A, the knob 6 is arranged with the pivot 12 as the center of rotation. As shown in FIG. 4B, for example, when the knob 6 is grasped by the operator's hand, the probe mounting section 8 is opened with the pivot 12 as a fulcrum. As shown in FIG. 5, an ultrasonic probe 16 is inserted into the opened probe mounting section 8.

The ultrasonic probe 16 is provided with a structure for fitting the probe fixing projection 17 on the assumption that a puncture adapter is mounted. Of course, this structure has a shape such as a protrusion or groove structure that can be mechanically fixed and positioned.

FIG. 6 shows an example in which the puncture adapter according to the embodiment of the present invention is attached to the ultrasonic probe 18. The holder section 1 holds the ultrasonic probe 18, and the puncture adapter 20 is attached without falling off by this holding, and is integrally combined. Guide 19
The fitting projection 13 formed integrally with the holder projection 7 is inserted into the holder projection 7. By this insertion, the guide 19 is fitted with the holder projection 7.

Even if the holder projection 7 is pinched by this fitting, the holder 1 does not open because the guide 19 is fitted. Therefore, it is possible to prevent the puncture adapter 20 from being unintentionally detached during the puncture operation by attaching the puncture adapter 20 to the ultrasonic probe 18. Further, by removing the guide 19, the puncture adapter 2 can be easily inserted.
0 can be removed from the ultrasonic probe 18.

FIG. 7 is a cross-sectional view for explaining the mounting of the puncture adapter 20 shown in FIG. As shown in this figure, the ultrasonic probe 18 is securely held by the holder 1, and
Does not move, so that unintended removal of the puncture adapter 20 can be prevented.

The embodiments described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

For example, the present invention is not limited to the shape of the ultrasonic probe 18 shown in the embodiment of the present invention, but may be applied to ultrasonic probes of other shapes. Further, even if the shape of the puncture adapter 20 is changed according to the shape of the ultrasonic probe to be applied, it does not depart from the scope of the present invention at all.

[0032]

According to the present invention described above, the ultrasonic probe has a structure which can be attached to or detached from the ultrasonic probe main body by an easy operation, and has a reliable fixing, easy detachability and an accurate puncture guide function. A puncture adapter can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic view of a puncture adapter according to an embodiment of the present invention, wherein (a) is a top view and (b) is a side view.

FIG. 2 is a schematic configuration diagram of a puncture adapter according to an embodiment of the present invention, wherein (a) is a top view and (b) is an arbitrary sectional view.

3A and 3B are schematic views of a guide unit according to an embodiment of the present invention, wherein FIG. 3A is a top view and FIG. 3B is a side view.

FIGS. 4A and 4B are views for explaining operation of the puncture adapter according to the embodiment of the present invention.

FIG. 5 shows one mounting example of the puncture adapter according to the embodiment of the present invention.

FIG. 6 shows one mounting example of the puncture adapter according to the embodiment of the present invention.

FIG. 7 shows one mounting example of the puncture adapter according to the embodiment of the present invention.

FIGS. 8A and 8B are schematic views for explaining one structural example of an ultrasonic probe according to a conventional technique.

FIGS. 9A and 9B are schematic views for explaining one structural example of an ultrasonic probe according to a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Holder part, 2 ... Guide part, 3 ... Guide needle hole, 4 ... Holder A, 5 ... Holder B, 6 ... Knob part, 7 ... Guide mounting part, 8 ... Probe mounting part, 9 ... Spring, 10 ... Fitting Mating groove, 2
0 ... Puncture adapter

Claims (5)

[Claims] 1. A puncture adapter used for an ultrasonic probe, comprising: gripping means for gripping the ultrasonic probe with elastic force, wherein the gripping means is detachably fixed to the ultrasonic probe. And puncture adapter. 2. The puncture adapter according to claim 1, wherein the gripping means includes a holding means for detachably holding a puncture needle guide for guiding the puncture needle. 3. The puncture adapter according to claim 2, wherein the holding means serves as a holding means for holding the holding state of the holding means while holding the puncture needle guide. 4. The apparatus according to claim 1, wherein said holding means includes an adapter fitting means having a concave-convex structure for fitting with said ultrasonic probe.
4. The puncture adapter according to any one of items 1 to 3. 5. The holding device according to claim 2, wherein the holding device includes a guide fitting device having a concave-convex structure for fitting the puncture needle guide portion. Puncture adapter.