JP3836626B2 - Puncture adapter for body cavity ultrasound probe - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intra-body-cavity ultrasonic probe for providing a guide hole that is attached to an intra-body cavity ultrasonic probe and safely guides the puncture needle to the tip of the probe when performing a puncture operation under an ultrasonic image. The present invention relates to a puncture adapter and an intracavity ultrasonic probe.
[0002]
[Prior art]
In order to perform an ultrasonic diagnosis from within a body cavity of a subject, an intrabody cavity ultrasonic probe is used. In order to facilitate insertion into the body cavity and to reduce discomfort to the subject as much as possible, the intracavity ultrasonic probe has a substantially rod-shaped insertion portion that is thin and rounded as much as possible. Of course, a plurality of ultrasonic transducers are arranged at the distal end of the insertion portion, and the tomogram can be obtained by scanning the inside of the subject with ultrasonic waves through the transducer arrangement. It has become.
[0003]
For the purpose of artificial insemination such as collection of tissue samples of the region of interest after the image diagnosis with this intracavitary ultrasound probe, treatment of liquid aspiration and drug administration retained in the tissue, collection of eggs, etc. A puncture is performed under the guidance of an ultrasound image. In many intracavity ultrasonic probes, a puncture adapter is used to safely guide the puncture needle used in this puncture procedure into the body cavity and to always position the puncture needle at a fixed position with respect to the ultrasonic scanning surface. Can be installed.
[0004]
Next, the structure of a conventional puncture adapter will be described with reference to FIG. As shown in FIG. 7A, the intracavity ultrasonic probe 101 is formed with a concave portion 105 for fixing a puncture adapter on the distal side surface of the intrabody cavity insertion portion 103. A dimple 109 is also formed in a substantially circular shape on the side surface of the grip portion (main body portion) 107 behind the insertion portion 103.
[0005]
As shown in FIG. 7B, a substantially cylindrical needle guide into which the puncture needle is inserted is inserted into the puncture adapter 121 made of metal such as stainless steel so as to match the structure of the ultrasonic probe 101 in the body cavity. A claw 125 is provided in the vicinity of the tip of the pipe 123, and when fitted, the tip is fixed by being fitted into the recess 105 of the tip of the ultrasonic probe. In addition, a circular protrusion 129 is fitted to the dimple 109 of the grip portion 107 and fixed to the rear end portion 127 of the needle guide pipe 123 at the time of mounting. The protrusion 129 can be increased in mounting strength by a screw 131.
[0006]
As a procedure for attaching the puncture adapter 121 to the intracavity ultrasonic probe 101, the claw 125 at the tip of the puncture adapter is fitted into the concave portion 105 of the ultrasonic probe insertion portion 103, and the circular protrusion 129 of the rear end portion 127 is used. The grip part 107 is fitted into the dimple 109 and, if necessary, the screw 131 is screwed.
[0007]
Then, after use, dirt such as blood and body fluid attached to the puncture adapter 121 is removed, and disinfection and sterilization processing is performed to prevent infection between patients and operators.
[0008]
[Problems to be solved by the invention]
However, since the conventional puncture adapter has a thin guide hole for the puncture needle, the inside of the pipe must be cleaned by liquid washing with a dedicated pipe brush or syringe. It was difficult to drop completely. In addition, it is necessary to send chemicals, gases, and the like used for disinfection and sterilization into the pipe, which requires special operations.
[0009]
Furthermore, when attaching to the ultrasonic probe, there is a trouble of screwing in the screw, and the fixing force of the puncture adapter varies due to the variation of the operator's force. There was also a problem of loosening. In addition, the subject often feels uncomfortable and painful due to slightly complicated irregularities such as metal claws and pipes.
[0010]
In view of the above problems, the object of the present invention is to improve the reliability and workability of the guide hole of the puncture needle, and to easily and reliably attach the puncture adapter to the body cavity ultrasonic probe, Furthermore, there are provided a puncture adapter for an intracorporeal ultrasound probe and an intracavity ultrasonic probe that can reduce the discomfort and pain of a subject with less irregularities when the puncture adapter is attached to the intracavity ultrasonic probe. It is.
[0011]
[Means for Solving the Problems]
(1) The present invention is a puncture adapter for an intracorporeal ultrasound probe that is detachable from an intracavity ultrasonic probe, and has a substantially semi-cylindrical shape, and a groove is formed from the rear end to the front end inside the semi-cylindrical shape. And an adapter having a substantially plate shape that is detachably attached to the inside of the adapter body.
[0012]
(2) The present invention is characterized in that, in the puncture adapter of (1), the puncture adapter has a fixing portion that is gripped by an elastic force at a substantially cylindrical insertion portion of the intracavitary ultrasonic probe.
[0013]
(3) The present invention provides the puncture adapter according to (1), wherein the distal end of the puncture adapter is fixed by a fixing portion provided in the adapter body with respect to the substantially cylindrical insertion portion of the intracavity ultrasonic probe. The vicinity of the rear end of the puncture adapter is fixed by a fixing portion provided in the attachment.
[0014]
(4) In the puncture adapter according to (3), in the puncture adapter according to (3), a convex portion that fits into a concave portion provided on a side surface of a rear end of the insertion portion of the intracorporeal ultrasound probe is formed on the fixed portion of the attachment. It is characterized by having.
[0015]
(5) In the puncture adapter according to (4), the present invention is characterized in that the convex portion provided near the rear end of the attachment has an inverted L-shape.
[0016]
(6) According to the present invention, in the puncture adapter according to (1), a blade is provided at the rear end of the adapter body, and a hook that is fitted to the blade is provided at the rear end of the attachment. It is a feature.
[0017]
(7) The present invention is characterized in that, in the puncture adapter according to (1), the attachment is provided with a projection that fits into the groove of the adapter main body.
[0018]
(8) The present invention provides an intracorporeal ultrasound probe comprising a grip portion and a substantially cylindrical insertion portion extending forward from the grip portion, and an inverted L-shaped side surface in the vicinity of the rear end of the insertion portion. It is characterized in that a recess is provided.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail according to preferred embodiments with reference to the drawings. As shown in FIG. 1 (a), the intracavitary ultrasound probe 31 is connected to an ultrasound diagnostic apparatus via a cable 34, and is forward of the grip part (main body) 33 and the grip part 33. The insertion portion 32 extends in a substantially cylindrical shape. The side surface near the tip of the insertion portion 32 is provided with a recess 35 that gradually becomes deeper as it approaches the tip, and the side surface near the rear end of the insertion portion 32 is provided with an inverted L-shape.
[0020]
As shown in FIG. 1B, the puncture adapter 100 can be detachably attached to the intracavitary ultrasonic probe 31 through the recesses 35 and 36. This puncture adapter 100 has a substantially semi-cylindrical shape, an adapter main body 1 in which a groove is formed from the rear end to the front end inside the semi-cylindrical shape, and a substantially plate shape that is detachable inside the adapter main body 1. Attachment 7. The attachment 7 is sandwiched and fixed between the adapter main body 1 and the insertion portion 32 of the intracavity ultrasonic probe 31. Thus, since the adapter main body 1 has a substantially semi-cylindrical shape so as to cover approximately half of the upper side of the insertion portion 32, the difference in level between the ultrasonic probe 31 and the insertion portion 32 is smooth. For this reason, the discomfort and pain of the subject can be reduced.
[0021]
As shown in FIGS. 2 (a) to 2 (g), a claw-shaped fixing portion 5 is provided near the tip of the substantially cylindrical body portion 2 of the adapter body 1. The fixing portion 5 holds the insertion portion 32 of the intracorporeal ultrasound probe 31 in the vicinity of the distal end by its elastic force and fits into the concave portion 35 on the side surface of the insertion portion 32, so that the vicinity of the distal end of the puncture adapter 100 is It is fixed to the insertion part 32 of the body cavity ultrasonic probe 31.
[0022]
Further, a groove 4 is provided in the longitudinal direction from the rear end to the front end inside the substantially cylindrical body portion 2 of the adapter main body 1. The rear end portion of the groove 4 is formed in a tapered shape as the insertion port 3 of the puncture needle.
[0023]
As shown in FIGS. 3A to 3G, the attachment 7 has a plate portion 9 having a substantially plate shape. A substantially semi-cylindrical fixed portion 6 is provided behind the plate portion 9. An inverted L-shaped convex portion 8 is provided inside the fixed portion 6. The fixing portion 6 holds the insertion portion 32 of the intrabody cavity ultrasonic probe 31 near the rear end by its elastic force, and the inverted L-shaped projection 8 fits into the recess 36 on the side surface of the insertion portion 32. As a result, the vicinity of the rear end of the puncture adapter 100 is fixed to the insertion portion 32 of the intracavity ultrasonic probe 31.
[0024]
In this way, the puncture adapter 100 has a two-piece structure of the adapter main body 1 and the attachment 7 and is held and fixed to the insertion portion 32 of the intracavity ultrasonic probe 31 by the two fixed portions 5 and 6 at the front and rear. Therefore, the conventional operation of turning the fixing screw is unnecessary, the fixing force is constant regardless of the operator's force, and the ultrasonic probe 31 can be attached to and detached from the ultrasonic probe 31 with a simple operation.
[0025]
In addition, since the puncture adapter 100 is fixed to the ultrasonic probe 31 by two concave and convex portions at the front and rear, it is difficult for the puncture adapter 100 to be unexpectedly removed or displaced. Further, since the rear unevenness has an inverted L-shape, it can resist external forces from two orthogonal directions, whereby the puncture adapter 100 is unexpectedly detached from the body cavity ultrasonic probe 31, Situation such as slippage is less likely to occur.
[0026]
In addition, since the fixed portions 5 and 6 of the puncture adapter 100 to the body cavity ultrasonic probe 31 are divided into the adapter main body 1 and the attachment 7, if the attachment 7 is not attached to the adapter main body 1, the puncture adapter 100 is removed. It is possible to prevent an attachment error of the attachment 7 that cannot be attached to the ultrasonic probe 31.
[0027]
Further, since the rear hook 12 provided at the rear end of the attachment 7 is fitted into the blade 11 at the rear end of the adapter main body 1, the attachment 7 is unexpectedly detached from the adapter main body 1 or the adapter main body 1. However, the situation where the position of the attachment 7 is shifted is less likely to occur.
[0028]
FIG. 4 shows a longitudinal sectional view of the puncture adapter 100 with the attachment 7 attached to the adapter body 1. Similarly, FIG. 5A shows a cross-sectional view. When the attachment 7 is attached to the adapter body 1, the groove 4 of the adapter body 1 is covered with the plate portion 9 of the attachment 7. Thus, the body as the guide hole 10 of the puncture needle is formed. When the attachment 7 is removed from the adapter body 1, the guide hole 10 of the puncture needle becomes the groove 4, so that it can be sufficiently washed with a generally used brush or sponge without using a pipe-specific brush or syringe. Is possible. Furthermore, disinfection or sterilization with a chemical solution or gas is performed to prevent infection. At this time, since the conventional pipe structure does not allow chemicals or gas to enter the pipe sufficiently, a device for forcibly sending the chemical or gas into the pipe is required, whereas this embodiment is a groove. There is no need for pipes and general disinfection and sterilization are possible, and the certainty and workability of disinfection and sterilization work are greatly improved.
[0029]
As shown in FIG. 5B, an attachment 7 ′ is provided on the surface of the plate portion 9, in which a protrusion 13 that is slightly fitted in the groove 4 of the adapter body 1 is formed. The diameter of the guide hole 10 can be changed simply by replacing the attachment 7 attached to the adapter main body 1 with an attachment 7 ′ having a protrusion. There are various thicknesses of puncture needles, for example, from a relatively thin one having a diameter of about 0.6 mm for aspirating stagnant liquid and administration of a drug to a relatively thick one having a diameter of about 1.8 mm for tissue collection. By replacing the attachment 7 according to the thickness of the puncture needle to be used, it is possible to deal with puncture needles of various thicknesses.
[0030]
Next, an operation procedure for mounting the puncture adapter 100 to the ultrasonic probe 31 will be described. First, the attachment 7 of the puncture adapter 100 is set inside the adapter body 1. Then, the distal end fixing portion 5 of the adapter main body 1 is gripped by the ultrasonic probe 31 and hooked on the distal end concave portion 35, the fixing portion 6 of the attachment 7 is pressed against the ultrasonic probe 31 and gripped, and the fixing portion 6 of the attachment 7 is The inverted L-shaped convex portion 8 is fitted into the concave portion 36 of the ultrasonic probe 31. At this time, the attachment 7 is sandwiched between the adapter body 1 and the ultrasonic probe 31 and fixed. Thereby, the guide hole 10 of the puncture needle is secured. In this operation, since there is no fixation with screws, there is no variation in fitting due to a difference in the operation force of the operator, and the mounting is completed with a simple operation. Thereafter, a puncture is performed under monitoring by an ultrasonic diagnostic apparatus.
[0031]
Next, a method for removing the puncture adapter 100 from the intracavitary ultrasonic probe 31 will be described. The wing portion 11 and the rear hook 12 at the rear end of the puncture adapter 100 are pinched with fingers and pulled up. Then, the fixed portion 6 of the attachment 7 is detached from the ultrasonic probe 31. Next, when the puncture adapter 100 is pulled obliquely backward, the fitting near the tip of the ultrasonic probe 31 is released, and the removal is completed. At this time, since the attachment 7 of the puncture adapter 100 is not fixed to the adapter main body 1, the disassembly of the attachment 7 and the adapter main body 1 is also completed at this point.
[0032]
The present invention is not limited to the embodiments described above, and can be implemented with various modifications. For example, in the embodiment, the structure of the puncture adapter attached to the intrabody cavity ultrasonic probe is shown, but it is obvious that the present invention can be applied to an ultrasonic probe that scans from another body surface.
[0033]
In the above description, the fixing portions 5 and 6 of the puncture adapter 100 to the intracavitary ultrasonic probe 31 are divided into the adapter main body 1 and the attachment 7, but FIG. 6 (a) and FIG. 6 (b). As shown in FIG. 3, the fixing portions 5 and 6 of the puncture adapter 100 may be provided only on the adapter body 1.
[0034]
【The invention's effect】
(1) According to the present invention, if the attachment is removed from the adapter body, the guide hole of the puncture needle becomes a groove, so that the reliability and workability of disinfection and sterilization work are significantly higher than those of conventional pipes. To improve. Further, since the puncture adapter has a substantially semi-cylindrical shape, there are few irregularities, and the pain and discomfort of the subject can be reduced.
[0035]
(2) According to the present invention, in addition to the effect of (1), the adapter main body is adapted to be gripped and fixed to the substantially cylindrical insertion portion of the intrabody cavity ultrasonic probe by its elastic force. Thus, the operation of turning the fixing screw is unnecessary, and the fixing force is constant regardless of the force of the operator, and there is an effect that it can be attached to and detached from the ultrasonic probe with a simple operation.
[0036]
(3) According to the present invention, in addition to the effect of (1), the fixing portion of the puncture adapter to the intracavity ultrasonic probe is divided into the adapter main body and the attachment, so the attachment is attached to the adapter main body. Otherwise, the puncture adapter cannot be attached to the ultrasonic probe, that is, an attachment non-attachment error can be prevented.
[0037]
(4) According to the present invention, in addition to the effect of (3), the fixed portion of the attachment has a convex portion that fits into the concave portion provided on the side surface of the rear end of the insertion portion of the intracorporeal ultrasound probe. Since it is formed, it is difficult to cause a situation in which the puncture adapter is unexpectedly detached or displaced.
[0038]
(5) According to the present invention, in addition to the effect of (4), the convex portion near the rear end of the attachment has an inverted L-shape, so it can resist external forces from two orthogonal directions. The situation where the puncture adapter is unexpectedly removed or the position is shifted is less likely to occur.
[0039]
(6) According to the present invention, in addition to the effect of (1), the adapter main body and the attachment are fixed at the rear end by the vane plate and the hook. However, it is difficult for the attachment position to shift.
[0040]
(7) According to the present invention, in addition to the effect of (1), the diameter of the guide hole can be changed and the puncture needles of various thicknesses can be handled simply by replacing the attachment.
[0041]
(8) According to the present invention, the inverted L-shaped concave portion provided on the side surface in the vicinity of the rear end of the substantially cylindrical insertion portion extending forward from the grip portion is unexpectedly detached or displaced. Such a situation is less likely to occur.
[Brief description of the drawings]
FIG. 1A is a side view of an intrabody cavity ultrasonic probe according to a preferred embodiment of the present invention, and FIG. 1B is a side view of an ultrasonic probe equipped with a puncture adapter according to the present embodiment.
2A and 2B are structural views of an adapter main body of the puncture adapter according to the present embodiment, in which FIG. 2A is a side view thereof, FIG. 2B is a plan view from above, FIG. 2C is a plan view from below; ) Is a cross-sectional view taken along the line CC of (b), (e) is a view seen from the rear, (f) is a cross-sectional view taken along the line BB of (d), and (g) is a cross-sectional view taken along the line AA of (d).
FIGS. 3A and 3B are structural views of attachment of the puncture adapter according to the present embodiment, wherein FIG. 3A is a plan view, FIG. 3B is a side view, and FIG. 3C is a cross-sectional view taken along line DD in FIG. ) Is a view seen from the rear, (e) is a sectional view taken along line AA in (b), (f) is a sectional view taken along line BB in (b), and (g) is a sectional view taken along line CC in (b).
FIG. 4 is a longitudinal sectional view of the puncture adapter according to this embodiment with an attachment attached to the adapter body.
FIG. 5 is a cross-sectional view of the puncture adapter according to the present embodiment with an attachment attached to the adapter body, where (a) shows a flat attachment, and (b) shows an attachment with a protrusion. The case where it is attached is shown.
6A is a longitudinal cross-sectional view of the puncture adapter according to a modification of the present embodiment with an attachment attached to the adapter body, and FIG. 6B is a cross-sectional view taken along line AA of FIG.
7A is a side view of a conventional intracavitary ultrasonic probe, FIG. 7B is a side view of the conventional puncture adapter and the insertion portion of the ultrasonic probe, and FIG. 7C is FIG. DD sectional drawing of.
[Explanation of symbols]
100 ... Puncture adapter,
2 ... Semi-cylindrical body part,
3 ... Needle insertion port,
4 ... Guide groove,
5 ... Tip fixing part,
6 ... Rear end fixing part,
7 ... Attachment,
8 ... Inverted L-shaped convex part,
9 ... Plate part,
10 ... Guide hole,
11 ... slats,
12 ... Rear hook,
31 ... Intracavity ultrasound probe,
32 ... insertion part,
33 ... grip part,
34 ... cable,
35 ... recess,
36: Inverted L-shaped recess.

Claims (8)

In the puncture adapter for an intrabody cavity ultrasonic probe that is detachable from the body cavity ultrasound probe,
An adapter body having a substantially semi-cylindrical shape, and a groove formed from the rear end to the tip inside the semi-cylindrical shape;
A puncture adapter for an intracorporeal ultrasound probe, comprising a substantially plate-shaped attachment that is detachable inside the adapter body. The puncture adapter for an intracorporeal ultrasound probe according to claim 1, wherein the puncture adapter has a fixing portion that is gripped by an elastic force at a substantially cylindrical insertion portion of the intracavity ultrasonic probe. The vicinity of the tip of the puncture adapter is fixed by a fixing portion provided in the adapter body, and the vicinity of the rear end of the puncture adapter is attached to the attachment with respect to the substantially cylindrical insertion portion of the intracorporeal ultrasound probe. The puncture adapter for an intrabody cavity ultrasonic probe according to claim 1, wherein the puncture adapter is fixed by a fixed portion provided. 4. The body cavity according to claim 3, wherein a convex portion that fits into a concave portion provided on a side surface of a rear end of the insertion portion of the intracorporeal ultrasound probe is formed in the fixing portion of the attachment. Puncture adapter for ultrasonic probe. The puncture adapter for an intracorporeal ultrasound probe according to claim 4, wherein the convex portion provided near the rear end of the attachment has an inverted L shape. 2. The intracavity ultrasonic probe according to claim 1, wherein a wing plate is provided at a rear end of the adapter main body, and a hook for fitting to the wing plate is provided at a rear end of the attachment. Puncture adapter. The puncture adapter for an intracorporeal ultrasound probe according to claim 1, wherein the attachment is provided with a protrusion that fits into a groove of the adapter main body. A body cavity comprising: a grip portion; and a substantially cylindrical insertion portion extending forward from the grip portion, wherein an inverted L-shaped recess is provided on a side surface near the rear end of the insertion portion. Ultrasonic probe.

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