JP4488568B2 - Puncture adapter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a puncture adapter, and more particularly to mounting of a puncture adapter used in combination with an ultrasonic probe and a puncture needle guide.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, image rendering devices using ultrasound have been used in various technical fields. For medical applications, for example, ultrasound that includes an ultrasound probe and renders a site to be examined present in the body of a subject An image diagnostic apparatus has been put into practical use and widely used.
[0003]
The ultrasonic probes provided in these ultrasonic diagnostic imaging apparatuses are provided with an ultrasonic transducer inside a portion of the tip portion that comes into contact with the body surface of the subject. This ultrasonic transducer is mainly composed of a piezoelectric vibrator, and irradiates ultrasonic waves toward a site to be examined by a subject. The irradiated ultrasonic waves are reflected ultrasonic waves from a plurality of boundary surfaces that exist at the site to be examined and have different acoustic impedances. By receiving this reflected ultrasonic wave by the piezoelectric vibrator and converting it into an electrical signal, the internal state of the site to be examined can be depicted as an image.
[0004]
In the ultrasonic tomographic image obtained in this way, a puncture operation is performed on the target site depicted under the observation of the ultrasonic tomographic image. Treatment is performed by collecting tissue at the target site by this puncture, or by injecting a drug into the target site, or inserting a heating element for heating.
[0005]
Conventionally, puncture adapters have been used for such puncture procedures. 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, that is, a method using a fixing band and a method for pushing into the main body of the ultrasonic probe.
[0006]
First, in the former fixed band method, a fixing means for fixing 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 under the ultrasonic tomographic image are integrally provided. ing. For example, a fixing means is fitted into a protrusion or the like provided on the exterior of the ultrasonic probe, and is fixed by a band or the like in this state. The fixing band is fastened by a fixing screw or the like.
[0007]
FIG. 8A shows an example of the fixed band type puncture adapter. It is fixed by the band fixing screw 34 and fixed to the ultrasonic probe 30 as shown in FIG. In the band-type puncture adapter 31 thus fixed, the puncture needle 32 is inserted into the guide needle hole 36.
[0008]
Moreover, the method shown in FIGS. 9A and 9B is an example of a method of pushing and fixing the ultrasonic probe 30. FIG. The push-type puncture adapter 33 is pushed into a projection or groove provided on the main body of the ultrasonic probe 30 so as to be fitted and positioned and fixed. For example, the stopper projection 35 is fitted into a projection or groove on the probe body side.
[0009]
[Problems to be solved by the invention]
Any of the above-described conventional methods for fixing a puncture adapter can be used without any problem with respect to the function of a guide for puncture. However, for example, in the fixed band method, when attaching to the ultrasonic probe, the hand holding the ultrasonic probe is changed so that it is held with the puncture adapter, and the fixing screw is tightened and fixed with the other hand. there were.
[0010]
Further, in the method of pushing and fixing, when an unintended force is applied to the puncture adapter during the puncture operation, the force may cause unintentional detachment from the ultrasonic probe main body.
[0011]
An object of the present invention is to prevent the puncture adapter from being detached from the ultrasonic probe in an unintended state .
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the present invention described in claim 1, at least two substantially symmetrical structures are engaged at a predetermined location, and are arranged to be rotatable around the predetermined location. And a grasping means for grasping the ultrasonic probe by the substantially symmetrical structure by elastic force, and a puncture needle guide portion provided at a position facing the grasping means and the predetermined location, for guiding the puncture needle Holding means for detachably holding the puncture needle guide portion in a state where the holding means holds the puncture needle guide portion, and the holding state of the holding means is A puncture adapter characterized by being held is used as a solution means.
[0015]
In the present invention of claim 2 , the gripping means is
The puncture adapter according to claim 1, further comprising an adapter fitting means having an uneven structure for fitting with the ultrasonic probe.
[0016]
Moreover, in this invention of Claim 3 , the said holding means is
The puncture adapter according to claim 1 , further comprising a guide fitting means having an uneven structure for fitting the puncture needle guide portion.
[0017]
The solution means of this invention comprises a puncture adapter so that a holder part and a guide part are separable, and the holder part has what is called a hook-shaped structure. The ultrasonic probe is sandwiched and fixed by performing an operation of pinching to open the ridge of this structure.
[0018]
In addition, when the puncture adapter is attached to the ultrasonic probe, by inserting a puncture needle guide into the knob operation part, the knob operation is restricted and the puncture adapter is detached from the ultrasonic probe in an unintended state. To prevent.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an overall schematic configuration of a puncture adapter according to an embodiment of the present invention. 1A is a view looking down from the upper surface, and FIG. 1B is a side view.
[0020]
The puncture adapter 20 includes a holder portion 1 and a guide portion 2, and a guide needle hole 3 is provided in the guide portion 2. Referring to FIG. 2, the holder portion 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 main portion 12, and are arranged so as to be rotatable with respect to the main portion 12.
[0021]
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 portion 6 is provided at a position facing the central axis according to the main part 12, and a guide for guiding insertion by holding the puncture needle at a predetermined angle in a space opposed to the knob portion 6 is provided. Part 2 is inserted. This space is shown as a guide mounting portion 7.
[0022]
FIG. 2B is a cross-sectional view taken along a plane including the main part 12 in FIG. A spring 9 is arranged around the key 12. The spring 9 can be a plate spring or a spring. The stopper 11 prevents the guide portion 2 from easily falling off when the guide portion 2 is inserted into the guide mounting portion 7. The stopper 11 has a protrusion or groove structure, and the protrusion or groove structure is similarly formed on the guide portion 2 so as to be fitted.
[0023]
FIG. 3A is a view for explaining the guide portion 2, and FIG. 3B is a side view thereof. This guide portion 2 is for holding a puncture needle used for puncture at a predetermined angle and guiding it safely and surely to a predetermined site during insertion. A puncture needle (not shown) is inserted into the 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 changing 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.
[0024]
The fitting protrusion 13 provided on the holder mounting portion 15 has a structure for fitting into the fitting groove 10, and may have a protrusion structure as shown in the figure or a groove structure. The stopper 14 is fitted with the stopper 11 to prevent the guide portion 2 from easily falling off from the guide mounting portion 7.
[0025]
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 portion 6 is disposed with the main 12 as the center of rotation. As shown in FIG. 4B, for example, when the knob portion 6 is pinched by the operator's hand, the probe mounting portion 8 is opened with the main point 12 as a fulcrum. As shown in FIG. 5, the ultrasonic probe 16 is inserted into the opened probe mounting portion 8.
[0026]
The ultrasonic probe 16 is provided with a structure for fitting the probe fixing protrusion 17 on the assumption that a puncture adapter is attached. Of course, this structure has a shape that can be mechanically fixed and positioned such as a protrusion or a groove structure.
[0027]
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 unit 1 holds the ultrasonic probe 18, and the puncture adapter 20 is attached without being dropped by this holding, and is combined together. The fitting protrusion 13 formed integrally with the guide 19 is inserted into the holder protrusion 7. By this insertion, the guide 19 is fitted to the holder projection 7.
[0028]
Even if the holder protrusion 7 is pinched by this fitting, the holder portion 1 will not open because the guide 19 is fitted. For this reason, it is possible to prevent the puncture adapter 20 from being attached to the ultrasonic probe 18 and coming off unintentionally during the puncture. Furthermore, the puncture adapter 20 can be easily detached from the ultrasonic probe 18 by removing the guide 19.
[0029]
FIG. 7 shows a cross-sectional view for explaining attachment of the puncture adapter 20 shown in FIG. As shown in this figure, the ultrasonic probe 18 is securely held by the holder portion 1 and the holder projection 7 does not move by the guide 19, so that unintentional detachment of the puncture adapter 20 can be prevented. .
[0030]
The embodiment described above is described in order to facilitate understanding of the present invention, and is not described in order to limit the present invention. Therefore, each element disclosed in the above embodiment includes all design changes and equivalents belonging to the technical scope of the present invention.
[0031]
For example, the scope of the present invention is not limited to the shape of the ultrasonic probe 18 shown in the embodiment of the present invention, and may be applied to ultrasonic probes having other shapes. Further, even if the shape of the puncture adapter 20 is changed according to the shape of the applied ultrasonic probe, it does not depart from the scope of the gist of the present invention.
[0032]
【The invention's effect】
According to the present invention described above, it is possible to prevent the puncture adapter from being detached from the ultrasonic probe in an unintended state .
[Brief description of the drawings]
FIG. 1 is a schematic view of a puncture adapter according to an embodiment of the present invention, where (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, where (a) is a top view and (b) is an arbitrary cross-sectional view.
3A and 3B are schematic views of a guide unit according to an embodiment of the present invention, where FIG. 3A is a top view and FIG. 3B is a side view.
FIGS. 4A and 4B are views for explaining the operation of the puncture adapter according to the embodiment of the present invention. FIGS.
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 the prior art.
[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 Groove, 20 ... Puncture adapter

Claims (3)

At least two substantially symmetric structures are engaged at a predetermined location and arranged to be rotatable around the predetermined location, and the ultrasonic probe is held by the substantially symmetric structure by elastic force. Gripping means to
A holding means that is provided at a position facing the gripping means and the predetermined portion and detachably holds a puncture needle guide portion for guiding the puncture needle;
With
A puncture adapter characterized in that the puncture needle guide part restricts the movement of the holding means while the holding means holds the puncture needle guide part, and the gripping state of the gripping means is fixed . The gripping means is
The puncture adapter according to claim 1, further comprising adapter fitting means having an uneven structure for fitting with the ultrasonic probe. The holding means is
The puncture adapter according to claim 1 , further comprising guide fitting means having a convex-concave structure for fitting the puncture needle guide portion.

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