JP5075481B2 - Puncture adapter and puncture probe device - Google Patents

Description

  The present invention relates to a puncture adapter and a puncture probe device, and more particularly, to a puncture adapter and a puncture probe device that can perform puncture with high accuracy even when the puncture dimension of a puncture needle is large.

  As described in Patent Document 1 below, a puncture probe apparatus in which an puncture adapter is attached to an ultrasonic probe is known. According to this puncture probe device, cross-sectional image data of a puncture target site is acquired by ultrasonic waves emitted from an ultrasonic transducer of an ultrasonic probe, and an image created based on the acquired cross-sectional image data is displayed on a display unit. Then, the puncture needle is punctured at the target puncture target site while viewing the displayed image.

  The puncture adapter is provided with a guide portion for guiding a puncture needle to be punctured. The puncture of the puncture needle is performed by sliding the puncture needle along the guide portion.

When puncturing using a puncture probe device, a cross-sectional image of a puncture target site by holding the puncture probe device with one hand, pressing the ultrasonic probe against a human body, and moving the puncture probe device Data is acquired and an image of the puncture target site is displayed on the display unit. After the image of the puncture target site is displayed on the display unit, the puncture needle is slid with the other hand while viewing the image, and puncture is performed. As described above, since the operation of grasping and moving the puncture probe apparatus is performed with one hand, it is desirable to reduce the size of the puncture probe apparatus in order to improve the operability of the puncture probe apparatus. When the puncture probe device is miniaturized, the puncture needle adapter is miniaturized accordingly.
JP 2005-34273 A

  However, according to the puncture adapter and the puncture probe device described above, the following points are not considered.

  When the puncture needle adapter is reduced in size, the length of the guide portion that guides the puncture needle is reduced accordingly. When the length of the guide portion is shortened, the punctured puncture needle is easily bent in the human body, and the puncture accuracy is lowered.

  In particular, when the puncture target site is deep from the surface of the human body, such as the liver, and the puncture size of the puncture needle is large, the puncture needle that is punctured tends to bend in the human body.

  On the other hand, if the length dimension of the guide portion is increased, the bending of the punctured puncture needle in the human body is reduced even when the puncture dimension of the puncture needle is large.

  However, when the length of the guide portion is increased, the puncture adapter and the puncture probe device are increased accordingly, and the operability is deteriorated.

  The present invention has been made to solve such problems, and its purpose is to accurately puncture a puncture target site located deep from the surface of the human body even when the puncture adapter is downsized. To provide a puncture adapter and a puncture probe apparatus that can be performed.

A first feature according to an embodiment of the present invention is that, in the puncture adapter, a first guide body having a first guide portion formed in a groove shape with a V-shaped cross-sectional shape for guiding the puncture needle so as to be slidable. The wire is slidably attached to the first guide body, and is formed in a substantially U-shape that is located on an extension line of the first guide portion and is variable in distance to the first guide portion, and has a stretchable wire. A second guide body, and a puncture needle presser that slidably holds the puncture needle between the first guide part and the first guide body along the longitudinal direction of the first guide part It has a pair of accommodation recesses located on both sides and a holding hole communicating with each accommodation recess, and the second guide body is accommodated in the pair of accommodation recesses of the first guide body, respectively, and the facing distance is changed. A pair of legs that can be A pair of locking portions formed on one end side of the portion and locked in the holding hole of the first guide body; and a connecting portion formed on the other end side of the leg portion and connecting the pair of leg portions; In order to change the distance between the second guide part which is located on the extension line of the first guide part and guides the puncture needle so as to be slidable, and the second guide part and the end of the first guide body A claw portion provided to extend and contract the second guide body on an extension line of the first guide portion;
It is to provide.

According to a second aspect of the present invention, in the puncture probe apparatus, the ultrasonic probe and the puncture adapter according to claim 1 or 2 attached to the ultrasonic probe. It is.

  According to the present invention, even when the puncture adapter is miniaturized, the dimension for guiding the puncture needle to be punctured can be lengthened as necessary, and the puncture target site located at a deep position from the surface of the human body can be increased. Puncture can be performed with high accuracy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
In the puncture probe device 1 according to the first embodiment of the present invention, as shown in FIG. 1, a puncture adapter 3 is detachably attached to an ultrasonic probe 2. A puncture needle 4 is slidably attached to the puncture adapter 3. The puncture adapter 3 includes a holder 5, a first guide body 6, a second guide body 7, and a puncture needle presser 8.

  The holder 5 is a belt-like member that is provided with a hinge (not shown) and is rotatable about the hinge, and is detachably attached to a position surrounding the outer periphery of the ultrasonic probe 2.

  The first guide body 6 is fixed to the holder 5. The first guide body 6 is formed with a first guide portion 9 that guides the puncture needle 4 so as to be slidable. As shown in FIG. 3, the first guide portion 9 is formed in a groove shape having a V-shaped cross section.

  Further, the first guide body 6 is formed with a pair of housing recesses 10 located on both sides along the longitudinal direction of the first guide portion 9 and a holding hole 11 communicating with each housing recess 10.

  The puncture needle holding portion 8 is attached to the holder 5 so as to be rotatable between a position indicated by a solid line and a position indicated by a broken line in FIG. When the puncture needle pressing portion 8 is rotated to the position indicated by the solid line, the side surface of the puncture needle 4 is pressed by the first guide body 6 and the puncture needle pressing portion 8, and the puncture needle 4 is punctured with the first guide body 6. The needle can be slid while being pressed by the needle presser 8. When the puncture needle presser 8 is rotated to the position indicated by the broken line, the first guide body 6 and the puncture needle presser 8 are separated from each other. Thereby, the puncture needle 4 can be attached to a position where the side surface of the puncture needle 4 is in contact with the first guide portion 9, or from a position where the puncture needle 4 is pressed by the first guide body 6 and the puncture needle pressing portion 8. It can be taken out.

  As shown in FIG. 4, the second guide body 7 is formed by molding a single wire into a substantially U shape, and has elasticity. The second guide body 7 includes a pair of leg portions 7a located opposite to each other, a pair of locking portions 7b formed on one end side of the leg portions 7a, and a pair formed on the other end side of the leg portions 7a. And a connecting part 7c for connecting the leg part 7a. The connecting portion 7c is formed with a second guide portion 7d and a claw portion 7e.

  The 2nd guide body 7 is attached to the 1st guide body 6 so that expansion-contraction to the position pulled out from the 1st guide body 6 and the position which enters into the 1st guide body 6 is possible. The second guide body 7 is attached to the first guide body 6 by housing the leg portion 7 a of the second guide body 7 in the housing recess 10 and inserting the locking portion 7 b into the holding hole 11. Expansion and contraction of the second guide body 7 is performed by extending the leg portion 7a or by bending the leg portion 7a. As shown in FIGS. 4A and 3A, the second guide body 7 is contracted by curving the leg portion 7a. On the other hand, as shown in FIG. 4B and FIG. 3B, the second guide body 7 extends by extending the leg portion 7a linearly. In addition, the inner peripheral surface of the accommodating recess 10 is formed in a shape that follows the shape of the curved leg portion 7a. When the leg portion 7a is bent, the leg portion 7a abuts on the inner peripheral surface of the accommodating recess 10. The leg portion 7a is maintained in a curved state by the frictional force at the contact portion, and the second guide body 7 is maintained in a contracted state.

  When the second guide body 7 is attached to the first guide body 6, the second guide portion 7 d is positioned on the extension line of the first guide portion 9, and the first guide is accompanied by expansion and contraction of the second guide body 7. The distance between the end of the portion 9 and the second guide portion 7d changes. For example, when the second guide body 7 is contracted as shown in FIG. 3A, the distance a between the end portion of the first guide portion 9 and the second guide portion 7d is shortened. Moreover, when the 2nd guide body 7 is extended as shown in FIG.3 (b), the distance b of the edge part of the 1st guide part 9 and the 2nd guide part 7d becomes long.

  When the puncture needle 4 is slid for puncturing, the puncture needle 4 is guided by the first guide portion 9 and the second guide portion 7d. Therefore, when the second guide body 7 is contracted as shown in FIG. 3A, the length that the puncture needle 4 is slidably guided by the first guide portion 9 and the second guide portion 7d is , “The total length of the first guide portion 9 + a”. On the other hand, when the second guide body 7 is extended as shown in FIG. 3B, the length that the puncture needle 4 is slidably guided by the first guide portion 9 and the second guide portion 7d is: “Total length of the first guide portion 9 + b (where the total length of the first guide portion 9 + b> the total length of the first guide portion 9 + a)”.

  The claw part 7e is used as an operation part when the second guide body 7 is expanded and contracted. By grasping the claw portion 7e and applying a force in the direction in which the second guide body 7 is expanded and contracted to the claw portion 7e, the second guide body 7 is in the contracted position shown in FIG. It expands and contracts to the extended position shown in).

  In such a configuration, when the puncture target site is located at a shallow position from the surface of the human body, the second guide body 7 is contracted as shown in FIG. This operation is performed by gripping the claw portion 7e and applying a force in a direction in which the second guide body 7 enters the housing recess 10. As shown in FIG. 4A, the second guide body 7 is in a state in which the legs 7a are curved.

  On the other hand, when the puncture target site is located at a deep position from the surface of the human body, the second guide body 7 is extended as shown in FIG. This operation is performed by gripping the claw portion 7e and applying a force in a direction in which the second guide body 7 is pulled out from the housing recess 10. As shown in FIG. 4B, the second guide body 7 is in a state where the leg portion 7a extends linearly.

  When the second guide body 7 is extended as shown in FIG. 3B, the length “the total length + b of the first guide portion 9” for guiding the puncture needle 4 can be increased. Since the length for guiding the puncture needle 4 to be punctured is increased, bending of the punctured puncture needle 4 in the human body is less likely to occur. Therefore, even when the puncture target site is located at a deep position from the surface of the human body, the puncture needle 4 can be accurately punctured into the puncture target site, and the puncture accuracy can be improved.

  On the other hand, when the puncture target site is located at a shallow position from the surface of the human body, the puncture needle 4 is less likely to bend in the human body. Good. Therefore, as shown in FIG. 3A, puncturing is performed with the second guide body 7 contracted. As shown in FIG. 3 (a), by projecting the second guide body 7 into a contracted state, the projecting dimension of the second guide body 7 from the first guide body 6 is reduced, and the first guide body 6 and the second guide body The external dimensions of the puncture adapter 3 having the guide body 7 can be reduced. By reducing the external dimensions of the puncture adapter 3, the puncture probe device 1 to which the puncture adapter 3 is attached can be reduced in size. Furthermore, the operability of the puncture probe device 1 during the puncture operation can be improved by downsizing the puncture probe device 1.

  Therefore, according to the puncture adapter 3 and the puncture probe apparatus 1, the operability of the puncture probe apparatus 1 can be improved by downsizing the puncture adapter 3 and the puncture probe apparatus 1. Further, when the puncture target site is located at a deep position from the surface of the human body, the length of guiding the puncture needle 4 can be increased when the puncture needle 4 is slid by extending the second guide body 7. Thus, it is possible to improve the puncture accuracy.

(Second Embodiment)
A puncture probe apparatus according to a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  In the puncture probe apparatus according to the second embodiment, the puncture adapter 20 is detachably attached to the ultrasonic probe in the same manner as the puncture probe apparatus 1 shown in FIG. As shown in FIG. 5, the puncture adapter 20 includes a holder (not shown), a first guide body 21, a second guide body 22, and a puncture needle presser 8.

  As shown in FIG. 6, the first guide body 21 is formed with a first guide portion 9 that guides the puncture needle 4 so as to be slidable. The first guide portion 9 is formed in a groove shape having a V-shaped cross section.

  Further, the first guide body 21 has a pair of elongated housing recesses 23 located on both sides along the longitudinal direction of the first guide portion 9, and the first guide portion 9 is disposed on the inner peripheral surface of the housing recess 23. Three engaging recesses 24a, 24b, and 24c that are recessed in a spherical shape located along the longitudinal direction are formed.

  As shown in FIG. 6, the second guide body 22 includes a pair of leg portions 22a and a connecting portion 22b that connects one end sides of the pair of leg portions 22a. The connecting portion 22b is formed with a second guide portion 22c and a claw portion 22d. Further, as shown in FIG. 7, a holding recess 25 is formed in the leg portion 22 a, and a sphere 26 and a spring 27 that biases the sphere 26 in a direction to push out the sphere 26 from the holding recess 25 are held in the holding recess 25. ing.

  The second guide body 22 is attached to the first guide body 21 so as to be slidable between a position pulled out from the first guide body 21 and a position entering the first guide body 21. The second guide body 22 is attached to the first guide body 21 by housing the leg portion 22a of the second guide body 22 in the housing recess 23 of the first guide body 21.

  The engaging recesses 24a, 24b, and 24c formed on the inner peripheral surface of the housing recess 23 have a trajectory along which the sphere 26 moves when the second guide body 22 attached to the first guide body 21 is slid. It is formed in the position which opposes. For this reason, when the second guide body 22 is slid to the deepest position of the first guide body 21, the spherical body 26 biased by the spring 27, as shown in FIG. The second guide body 22 is fixed in position by elastically engaging with the engagement recess 24a located on the innermost side. Further, when the second guide body 22 is slid to the position where it is pulled out to the outermost side of the first guide body 21, the sphere 26 biased by the spring 27 is accommodated in the housing recess as shown in FIG. The second guide body 22 is elastically engaged with the engagement recess 24 c located on the outermost side in the position 23 and the position of the second guide body 22 is fixed. The spherical body 26, the spring 27, and the engaging recesses 24a, 24b, and 24c form fixing means for fixing the second guide body 22 at three positions.

  In the second embodiment, the case where the second guide body 22 is fixed at three positions by having the three engagement recesses 24a, 24b, and 24c is shown. It is not limited to three places, and may be two places or four or more places.

  When the second guide body 22 is attached to the first guide body 21, the second guide portion 22 c is positioned on the extension line of the first guide portion 9, and the first guide body 22 is moved along with the sliding operation of the second guide body 22. The distance between the end portion of the guide portion 9 and the second guide portion 22c changes. For example, as shown in FIG. 7A, when the spherical body 26 is engaged with the engagement recess 24a located at the deepest position of the accommodation recess 23, the end portion of the first guide portion 9 and the second guide The distance a with the portion 22c is shortened. Further, as shown in FIG. 7B, when the spherical body 26 is engaged with the engaging recess 24c located on the outermost side of the housing recess 23, the end portion of the first guide portion 9 and the second guide portion 22c. And the distance b becomes longer.

  When the puncture needle 4 is slid for puncturing, the puncture needle 4 is guided by the first guide portion 9 and the second guide portion 22c. Therefore, as shown in FIGS. 6A and 7A, when the second guide body 22 is slid to a position where the spherical body 26 is engaged with the engagement recess 24a, the puncture needle 4 is The length slidably guided by the first guide portion 9 and the second guide portion 22c is “the total length of the first guide portion 9 + a”. On the other hand, as shown in FIGS. 6B and 7B, when the second guide body 22 is slid to a position where the sphere 26 is engaged with the engagement recess 24c, the puncture needle 4 is The length slidably guided by the one guide portion 9 and the second guide portion 22c is “the total length of the first guide portion 9 + b (where the total length of the first guide portion 9 + b> the total length of the first guide portion 9). + A) ".

  The claw portion 11d is used as an operation portion when the second guide body 22 is slid. The second guide body 22 slides by gripping the claw portion 22d and applying a force in the direction in which the second guide body 22 slides on the claw portion 22d. The slid second guide body 22 is fixed at a position where the sphere 26 is elastically engaged with any of the engagement recesses 24a, 24b, and 24c.

  In such a configuration, the second guide body 22 is slid according to the position of the puncture target site, and the sphere 26 is elastically engaged with any of the engagement recesses 24a, 24b, and 24c, so that the second The position of the guide body 22 can be fixed.

  Therefore, when the puncture target site is located at a shallow position from the surface of the human body, the second guide body 22 is slid to the position shown in FIGS. 6A and 7A, and the sphere 26 is engaged with the engagement recess. The position of the second guide body 22 is fixed by engaging with 24a. This operation is performed by gripping the claw portion 22d and applying a force in a direction in which the second guide body 22 enters the housing recess 23.

  On the other hand, when the puncture target site is located at a deep position from the surface of the human body, the second guide body 22 is slid to the position shown in FIGS. 6B and 7B, and the sphere 26 is engaged with the engagement recess 24c. And the second guide body 22 is fixed in position. This operation is performed by gripping the claw portion 22d and applying a force in a direction in which the second guide body 22 is pulled out from the housing recess 23.

  As shown in FIGS. 6B and 7B, when the second guide body 22 is slid to a position where the sphere 26 engages with the engaging recess 24c, the length for guiding the puncture needle 4 “Total length of first guide portion 9 + b” can be increased. Since the length for guiding the puncture needle 4 to be punctured is increased, the puncture needle 4 is less likely to bend in the human body after the puncture needle 4 is punctured into the human body. Therefore, even when the puncture target site is located at a deep position from the surface of the human body, the puncture needle 4 can be accurately punctured into the puncture target site, and the puncture accuracy can be improved.

  On the other hand, when the puncture target site is located at a shallow position from the surface of the human body, the puncture needle 4 is less likely to bend in the human body. Good. Therefore, as shown in FIGS. 6A and 7A, when the second guide body 22 is slid to a position where the spherical body 26 engages with the engaging recess 24a, the puncture needle 4 is guided. The length “the total length + a of the first guide portion 9” can be shortened. Thereby, the protrusion dimension of the 2nd guide body 22 from the 1st guide body 21 becomes small, and the external dimension of the adapter 20 for puncture which has the 1st guide body 21 and the 2nd guide body 22 can be made small. By reducing the outer dimensions of the puncture adapter 20, the puncture probe apparatus to which the puncture adapter 20 is attached can be reduced in size. Furthermore, by reducing the size of the puncture probe apparatus, it is possible to improve the operability of the puncture probe apparatus during the puncture operation.

  Therefore, according to the puncture adapter 20 and the puncture probe device, it is possible to improve the operability of the puncture probe device by downsizing the puncture adapter 20 and the puncture probe device. Further, when the puncture target site is located at a deep position from the surface of the human body, the length of guiding the puncture needle 4 when sliding the puncture needle 4 can be increased by extending the second guide body 22. Thus, it is possible to improve the puncture accuracy.

It is a top view which shows the probe apparatus for puncture based on the 1st Embodiment of this invention. It is a front view which shows the adapter for puncture. It is a perspective view which shows the 1st guide body and the 2nd guide body which are a part of adapter for puncture. It is a perspective view which shows a 2nd guide body. It is a front view which shows the adapter for puncture based on the 2nd Embodiment of this invention. It is a perspective view which shows the 1st guide body and the 2nd guide body which are a part of adapter for puncture. It is sectional drawing which shows the attachment state of the 2nd guide part to a 1st guide part.

Explanation of symbols

2 Ultrasonic probe 3 Puncture adapter 4 Puncture needle 6 First guide body 7 Second guide body 7d Second guide portion 20 Puncture adapter 21 First guide body 22 Second guide body 22c Second guide portion

Claims (3)

A first guide body having a first guide portion formed in a V-shaped groove shape for slidably guiding the puncture needle;
A first guide body is slidably attached to the first guide body, and is formed on a substantially U-shaped wire that is located on an extension line of the first guide portion and can change a distance from the first guide portion, and has a stretchable wire . 2 guide bodies,
A puncture needle presser that holds the puncture needle in a slidable manner with respect to the first guide part;
Have
The first guide body has a pair of housing recesses located on both sides along the longitudinal direction of the first guide part, and a holding hole communicating with each housing recess,
The second guide body is housed in a pair of housing recesses of the first guide body, and is formed on one end side of the leg portion, and a pair of leg portions capable of changing a facing interval thereof, A pair of locking portions that are locked to the holding holes of the guide body, a connecting portion that is formed on the other end side of the leg portion, and connects the pair of leg portions, and is located on an extension line of the first guide portion And a second guide part that slidably guides the puncture needle, and a distance between the second guide part and an end of the first guide body, wherein the second guide body is provided in the first guide body. A claw portion that extends and contracts on an extension line of one guide portion;
Puncture adapter and having a. The second guide body is attached to the first guide body so as to be slidable between a position pulled out from the first guide body and a position entering the first guide body, and the second guide body is fixed at a plurality of positions. The puncture adapter according to claim 1, further comprising a fixing unit that performs the fixing . An ultrasonic probe;
The puncture adapter according to claim 1 or 2, which is attached to the ultrasonic probe;
A puncture probe apparatus comprising:

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