JP4580363B2 - Puncture adapter - Google Patents

Description

  The present invention relates to a structure of a puncture adapter for an ultrasonic probe that guides or holds a puncture needle.

  The puncture adapter is provided in an ultrasonic probe that transmits and receives ultrasonic waves. This is used when a puncture needle is inserted into a living body while observing an ultrasonic image (for example, a tomographic image) (see Patent Documents 1-5). Here, the puncture needle is for tissue collection, drug injection, electrosurgery and the like. Patent Documents 3 to 5 show a puncture adapter integrated with an ultrasonic probe (probe). Patent Documents 1 and 2 show a puncture adapter that is detachably attached to an ultrasonic probe. The puncture adapters described in Patent Documents 1 and 2 have an attachment mechanism, a base member held by the attachment mechanism, and a cover member attached to the base member. A plurality of grooves are formed in one of the base member and the cover member, and a plurality of puncture paths are established when the base member and the cover member are joined. Depending on the desired puncture angle, the depth of the target tissue, etc., any puncture path is selected and a puncture needle is inserted there. In addition, Japanese Patent Application No. 2005-129180 can be mention | raise | lifted as an unpublished patent application relevant to this application.

Japanese Utility Model Publication No. 63-151106 JP-A-3-173542 JP-A-8-614 JP-A-8-617 Japanese Patent Laid-Open No. 10-248849

  The conventional puncture adapter is provided with a lock function for locking the state where the cover member is attached to the base member. The lock mechanism generally has a lock pin and a knob for rotating the lock pin. Conventionally, the knob has a simple cylindrical shape. In such a shape, since the ultrasonic probe is held with one hand and the knob is operated with the other hand, it is possible to hold the puncture needle with the hand when the puncture needle is opened. It was difficult to do it. That is, when replacing the puncture needle with a different gauge, or when removing the ultrasonic probe from the living body while leaving only the puncture needle, remove the puncture needle from one hand when removing the puncture needle from the puncture adapter. It is necessary to hold in. In such a case, it is necessary to release the locked state of the puncture adapter with the other hand holding the ultrasonic probe. However, in the past, the knob portion has a simple cylindrical shape. It was difficult to rotate it with the fingertips of the hand holding the ultrasound probe.

  An object of the present invention is to enable a lock state of a puncture needle adapter to be easily released.

  Another object of the present invention is to make it possible to easily unlock the puncture needle adapter with the hand holding the ultrasonic probe.

  Still another object of the present invention is to make it possible to form a state in which the cover member can be prevented from dropping after the locked state is released.

  The puncture adapter for an ultrasonic probe according to the present invention includes an attachment mechanism attached to an ultrasonic probe that transmits and receives ultrasonic waves, and a member that is held by the attachment mechanism and is attached to the ultrasonic probe. A puncture guide mechanism having a base member that is positioned, a cover member that is detachably joined to the base member, and a lock mechanism that holds a joined state of the cover member to the base member. The mechanism includes a lock pin for fastening the base member and the cover member, and a knob connected to an end of the lock pin for rotating the lock pin, the knob being And a lever-like portion extending outward from the rotation center of the knob.

  According to the said structure, since the knob | pick part has a lever-shaped part, the lock mechanism can be easily operated by rotating the lever-shaped part. Although it is desirable that the lever-shaped portion is rotated around the rotation axis toward the ultrasonic probe to form an unlocked state, it may be configured to rotate in the opposite direction.

  Preferably, the knob portion includes a cylindrical portion having the center of rotation at the center and the lever-like portion that swells and extends outward from the cylindrical portion. According to this configuration, the knob can be rotated by picking the cylindrical portion, or the knob can be rotated by picking the lever-like portion or hooking it on the fingertip.

  Preferably, the knob has a posture in which the lever-like portion hangs downward from the rotation center in the locked state of the locking mechanism, and the lever-like portion horizontally extends from the rotation center in the unlocked state of the locking mechanism. It will be a posture to face. Preferably, when the locking mechanism is unlocked, the lever-like portion is in a horizontal state facing the ultrasonic probe, and the lever is held by two fingers of a hand holding the ultrasonic probe. It can hold the shape part. According to this configuration, for example, while the other hand (for example, holding the puncture needle) is performed with one hand and the ultrasonic probe is held with the other hand, the lever-shaped portion is operated with the same hand. Furthermore, a lever-like portion can be sandwiched between two fingers. That is, when the cover member is detached from the base member together with the knob, the knob can be held by two fingers to prevent the cover member from falling off. In this case, if the shape of the knob is a simple cylindrical shape, it will be difficult to stably hold the knob when it is sandwiched between two fingers. It becomes easy to hold the knob and stably hold the knob.

  Desirably, one side of the lever-like portion has a hook shape that is gently depressed to receive a fingertip. According to this structure, it is easy to hook a fingertip. One-handed operation is also easy.

  As described above, according to the present invention, the locked state of the puncture needle adapter can be easily released. Alternatively, the locked state of the puncture needle adapter can be easily released with the hand holding the ultrasonic probe. Furthermore, it is possible to form a state in which the cover member can be prevented from falling after the locked state is released.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

  1 to 6 are for explaining the basic form of the puncture adapter. In these figures, the shape of the knob is a cylindrical shape as a comparative example. 7 to 9 show a puncture adapter according to an embodiment. In the embodiment, there is a lever-like portion in the knob, which will be described in detail later. In the following, first, the basic form of the puncture adapter will be described in detail with reference to FIGS. 1 to 6, and then the characteristic configuration of the embodiment will be described in detail with reference to FIGS.

  In FIG. 1, a puncture adapter 12 is attached to an ultrasonic probe (probe) 10. Without attaching the puncture adapter 12 to the ultrasonic probe 10, it is also possible to perform ultrasonic diagnosis with the ultrasonic probe 10 alone. The ultrasonic probe 10 has a tip portion 10A that is enlarged below, and the lower surface thereof is a wave transmitting / receiving surface 10B. An acoustic lens is provided on the wave transmitting / receiving surface 10B. When performing ultrasonic diagnosis, the wave transmitting / receiving surface 10B is brought into contact with the surface of the living body. The probe body 10D is thin when viewed from the distal end portion 10A, and a cable boot 10C is provided on the upper portion thereof. The cable boot 10C is a member that holds a probe cable (not shown).

  The wave transmitting / receiving surface 10B described above is curved along an arc shape, whereby a so-called convex type ultrasonic probe 10 is configured. A plurality of vibration elements (not shown) are arranged along the wave transmitting / receiving surface 10B, and an array transducer is configured by them. By applying electronic linear scanning to the array transducer, the ultrasonic beam is electronically scanned along an arc, thereby forming a scanning surface having a sector shape as will be described later with reference to FIG. Is done. However, the scanning surface is not a complete fan shape, and the upper side and the lower side are arcuate and have a trapezoidal shape as a whole. Of course, the present invention can also be applied to an ultrasonic probe other than the convex type ultrasonic probe. For example, the puncture adapter technique according to the present invention may be applied to an ultrasonic probe including a 2D array transducer.

  The puncture adapter 12 is detachably attached to the ultrasonic probe 10 as described above. Specifically, when puncturing a target tissue while observing an ultrasonic image, a puncture adapter 12 is attached to the ultrasonic probe 10, and the puncture adapter 12 holds and guides the puncture needle. By doing so, it becomes possible to guide the puncture needle appropriately to the tissue of interest.

  The puncture adapter 12 has an adapter body 14 and a guide mechanism 20. The adapter main body 14 has an attachment mechanism 16 and a frame 22. The attachment mechanism 16 is a mechanism for attaching the adapter main body 14 in a detachable manner with respect to the probe main body 10D. Specifically, the attachment mechanism 16 includes a first attachment member 16A, a second attachment member 16B, and an attachment lock mechanism 16C. A second mounting member 16B is provided so as to be openable and closable with respect to the first mounting member 16A. If the probe main body 10D is surrounded by them and the lock mechanism 10C is operated in this state, the puncture adapter 12 is held by the mounting mechanism 16. Can be fixed to the ultrasonic probe 10.

  The adapter main body 14 has the frame 22 as described above. As shown in FIG. 1, the main body of the frame 22 is a plate-shaped member, and its upper end 22A is connected to the mounting mechanism 16, and its lower end 22B is a base member 24 in the guide mechanism 20 described later. It is connected to. The frame 22 has a hook member 22 </ b> C, and the hook member 22 </ b> C engages with a knob 10 </ b> E provided on an upper part of a specific side surface of the ultrasonic probe 10. In other words, the puncture adapter 12 can be stably attached to the ultrasonic probe 10 by hooking the groove of the hook member 22C on the knob 10E and operating the attachment mechanism.

  One side surface of the ultrasonic probe 10, that is, the specific side surface is orthogonal to the scanning surface, and as will be described later with reference to FIG. The knob 10E is provided on the inclined side surface portion. Most of the guide mechanism 20 is provided in the vicinity of the vertical side surface portion.

  The guide mechanism 20 will be described in detail. The guide mechanism 20 includes a base member 24, a cover member 26, and a lock mechanism 28. The base member 24 is fixed to the lower end 22B as described above. The cover member 26 is detachably attached to the base member 24. In the mounted state, that is, in a state where the cover member 26 is properly positioned with respect to the base member 24, the lock mechanism 28 is locked (specifically, the knob having a cylindrical shape is rotated). )), It is possible to maintain the combined state of the two. The lock mechanism 28 has a lock pin that reaches from the cover member 26 side to the base member 24 side, and the lock pin is rotated by passing through both members, thereby fastening the both members. A cylindrical knob member is fixedly connected to one end side of the lock pin. The base member 24 is made of, for example, metal, and the cover member 26 is made of, for example, a member such as resin.

  In the guide mechanism 20, a first engagement structure 30, a second engagement structure 32, and a third engagement structure 34 are provided as will be described in detail later. The first engagement structure 30 mainly exhibits a positioning action, the second engagement structure 32 mainly exhibits a positioning and hook coupling action, and the third coupling structure 34 mainly exerts a hook coupling action. These will be described in detail later.

  FIG. 2 shows two puncture paths 44 and 46 formed by the guide mechanism 20 described above. As will be described in detail later, when the cover member is attached to the base member, a first guide path 40 and a second guide path 42 are formed in the guide mechanism 20. By selecting either one and inserting the puncture needle, puncture of the living body can be performed. In the present embodiment, two puncture paths are formed by the guide mechanism 20, but more puncture paths may be formed. In general, in the guide mechanism 20, n guide routes from the first guide route to the nth guide route that are closest to the specific side surface of the ultrasound probe 10 are formed, where n is an integer of 2 or more. is there. In the present embodiment, two guide paths, a first guide path 40 and a second guide path 42, are formed, and the first engagement structure is constructed at the center of a triangular region sandwiched between them, A lock pin is inserted through the top.

  Specifically, the specific side surface of the ultrasonic probe 10 includes a first side surface portion 10F and a second side surface portion 10G. Here, the vertical side surface portion 10F forms a vertical surface in the example shown in FIG. The side surface portion 10G forms a slope surface or a tapered surface inclined toward the probe center axis with the upper side of the vertical portion 10F as a bending point. Although the main part in the guide mechanism 20 is provided adjacent to the vertical side surface part 10F, the upper part in the guide mechanism 20 is applied to the lower part of the inclined side surface part 10G. As shown in FIG. 2, the upper ultrasonic probe side portion of the guide mechanism 20 constitutes a protruding portion, and the protruding portion protrudes toward the inclined side surface portion 10G. As will be described later, a third engagement structure is provided on the protruding portion.

  As described above, when an ultrasonic beam is electronically scanned using the convex ultrasonic probe 10, a scanning surface 38 having a trapezoidal shape as shown in FIG. 2 is formed. In the present embodiment, the first guide path 40 has an angle close to vertical. When it is set apart from the specific side surface, when performing puncturing, the approach position of the tip of the puncture needle to the scanning surface 38 is positioned away from the ultrasound probe downward and laterally. In other words, the blind zone will increase. On the other hand, according to the guide mechanism 20 of the present embodiment, the first guide route 40 can be brought closer to the specific side surface, and in particular, the lower part of the first guide route 40 can be set to the nearest lower part of the specific side surface. As a result, the blind zone can be made very small. Therefore, when performing puncturing using such a first guide path 40, the distance or time until the puncture needle appears in the ultrasound image can be reduced, and the anxiety of the doctor can be eliminated or reduced, It is possible to improve safety when puncturing.

  In the above, the first guide route 40 has been described. However, since the second guide route 42 can be brought closer to the specific side surface, the same advantage as described above can be obtained by reducing the blind zone. It becomes possible.

  Next, the guide mechanism 20 will be described in detail with reference to FIG. As described above, the guide mechanism 20 includes the base member 24 and the cover member 26.

  The base member 24 is a flat plate member as a whole, and has a triangular shape as a whole that tapers downward. At the side end portion of the base member 24 away from the ultrasonic probe 10, a recess 54C as a recess is formed as shown in the figure, and the first protrusion 54A and the first protrusion 54A are formed vertically therebetween. Two convex portions 54B are formed. Further, an opening 50 is formed at the center of the base member 24 as shown in the figure. The opening 50 has a triangular shape that tapers downward, and is a through hole. A horizontally wide display piece 56 is provided on the upper side of the base member 24. Although not shown in FIG. 3, it is desirable to provide marks on the display piece 56 for identifying the guide grooves, which will be described later. Such marks can be formed as protrusions or stamps, or may be provided using techniques such as printing or labeling.

  At the side end portion of the base member 24 on the ultrasonic probe 10 side, a shoulder portion 58 protruding to the above-described slope side surface portion is formed at the upper portion. A receiving portion for receiving the lock pin is formed on the upper portion of the base member 24.

  Next, the cover member 26 will be described. The cover member 26 has a triangular shape that tapers downward. That is, in the state where the cover member 26 is attached to the base member 24, the entire guide mechanism 20 has a tapered triangular shape toward the lower side. Thereby, even when the ultrasonic probe 10 is tilted, it is possible to reduce or eliminate unnecessary contact of a part of the guide mechanism 20 with the living body surface. A protrusion 52 is formed on the cover surface 26 </ b> A that forms the mounting surface of the cover member 26. This protrusion 52 constitutes the first engagement structure together with the opening 50 described above. The protrusion 52 has a tapered triangular shape below.

  A projecting portion 60 is provided at the side end portion of the cover member 26 away from the ultrasonic probe 10. The projecting portion 60 has a wall-like form projecting to the base member 24 side. Specifically, the projecting portion 60 has a holding surface 60A, a first hooking piece 60B, and a second hooking piece 60C. . The first hook piece 60 </ b> B and the second hook piece 60 </ b> C have shapes that protrude slightly toward the inner side of the cover member 26.

  In addition, a third hooking piece 62 is provided at an upper portion of the side end of the cover member 26 on the specific side surface side. The third hooking piece 62 also has a hook shape that protrudes inward in the same manner as the first hooking piece 60B and the second hooking piece 60C.

  Two guide grooves are formed in the cover member 26 as shown in the figure. Specifically, a first guide groove 100 and a second guide groove 102 are formed. They open upwardly in a fan shape, and a plane region having a triangular shape is formed between them. The protrusion 52 is present at the center of the region. The first guide groove 100 constitutes the above-described first guide path together with the base surface as the mounting surface on the base member 24 side in a state where the cover member 26 is mounted on the base member 24. Similarly, the second guide groove 102 constitutes a second guide route. The upper ends of the guide grooves 100 and 102 are tapered so that the tip of the puncture needle can be easily inserted into each guide groove.

  A thin wall 26B is formed on the first guide groove 100, that is, on the specific side surface of the first guide path. As shown in the drawing, the thin wall 26B has a triangular shape as a whole that tapers downward. The lower end portion is notched, and this will be described later with reference to FIG. Conventionally, a protruding portion having the same thickness as the protruding portion 60 as shown in FIG. 3 is provided in a portion corresponding to the thin wall 26B, and the guide mechanism 20 is provided on a specific side surface by the presence thereof. Although it was difficult to approach, in the present embodiment, since such a protruding portion is removed, both the first guide groove 100 and the second guide groove 102 can be brought closer to a specific side surface. It has become. As a result, the thin wall 26B as described above is formed. In the present embodiment, the first engagement structure or the like is employed when removing the overhanging portion as described above. In other words, an intermediate portion (empty area) in the guide mechanism 20 is effectively used, and a specific engagement means is configured with the area.

  FIG. 4 shows the adapter main body 14 and a base surface 24 </ b> A that forms a mounting surface of the base member 24. The base surface 24A is a flat surface as shown in the figure. FIG. 5 shows the cover member 26. As described above, the first guide groove 100 and the second guide groove 102 are formed in the cover member 26, and the side surface 26D of the cover member 26 is a surface facing or contacting a specific side surface of the ultrasonic probe. is there. A notch 26C is formed at the lower end portion, that is, the lower end portion of the thin wall 26B is notched.

  FIG. 6 shows a state where the cover member is attached to the base member. When the cover member is attached to the base member, the cover member is moved closer to the base member side while being held at a position slightly higher than the base member. Then, the protrusion 52 in the cover member enters the center or upper part of the opening 50 in the base member. Thereafter, by lowering the cover member with respect to the base member or by moving the cover member downward together with the above-mentioned proximity movement, the protrusion 52 is dropped into the lower portion of the opening 50 and the protrusion 52 is opened. Positioned by the part 50. Thereby, the engagement by the first engagement structure is completed.

  In parallel with the above process, in the second engagement structure, when the first hooking piece 60B and the second hooking piece 60C enter through the recess 54C and the upper notch in the base member, and the cover member is pulled down, The first hooking piece 60B is hooked on the upper end of the first convex part 54B, and at the same time, the second hooking piece 60C is hooked on the upper end of the second convex part 54B. In this state, the side surface of the base member is joined to the holding surface 60A of the cover member. Thereby, the engagement by the second engagement structure is completed.

  Further, in parallel with the above, in the third coupling structure, the third hooking piece 62 enters through the notch formed in the upper end portion of the base member, and the base member is pulled downward, so that the third hooking is performed. The piece 62 is caught on the shoulder 58 formed in the base member. Thereby, the engagement by the third engagement structure is completed.

  As described above, in the process of attaching the cover member to the base member, the first engagement structure, the second engagement structure, and the third engagement structure each function, thereby covering the base member. As the member is positioned, the two are securely coupled. The coupled state is locked by operating the lock mechanism.

  In the above embodiment, the opening is formed on the base member side and the convex portion is formed on the cover member side, but the relationship is reversed to form the convex portion on the base member side and on the cover member side. An opening may be formed. As for the convex part and the opening part, it is possible to adopt other shapes as long as both can be reliably positioned. Various variations are also conceivable for the second engagement structure and the third engagement structure. In any case, it is desirable that the cover member is properly positioned with respect to the base member and the state is maintained. .

  It should be noted that a recess or the like for allowing the puncture needle to pass therethrough may be formed in the lower portion of the specific side surface of the ultrasonic probe, thereby bringing the puncture path closer to the ultrasonic probe.

  Next, the puncture adapter according to the embodiment will be described with reference to FIGS. 7 to 9. Although the basic form of the puncture adapter according to the embodiment is the same as that shown in FIGS. 1 to 6 (therefore, the corresponding components are given the same reference numerals), the puncture adapter according to the embodiment has a knob in the lock mechanism. The part is provided with a lever-like part. In the following, the knob is mainly described in detail.

  In FIG. 7, the puncture adapter 12 is attached to the ultrasonic probe 10, and the puncture adapter 12 has the adapter main body 14, the attachment mechanism 16, and the guide mechanism 20 as described above. As described above, the base member 24 is fixedly provided on the adapter main body 14, and the cover member 26 is detachably attached to the base member 24. The lock mechanism 28 has a lock pin (not shown). The lock pin passes through the cover member 26, and the tip thereof is engaged with the base member 24. A knob 200 is fixedly connected to the rear end of the lock pin, and the knob forms one element of the lock mechanism 28.

  The knob portion 200 is roughly divided into a cylindrical portion 202 and a lever-like portion 204. The cylindrical portion 202 has a cylindrical shape with the rotation axis of the lock pin as the center, and a lever-like portion 204 is configured as a form extending outward therefrom. The knob 200 has a teardrop shape as a whole. Both end portions 202A and 204A are rounded.

  One surface 206 that extends from one end of the cylindrical portion 202 to the lever-shaped portion 204 is configured as a flat plane, and the other surface 208 that extends from the other end of the cylindrical portion 202 to the lever-shaped portion 204 is shown in the figure. It is configured as a gently concave curved surface. With this configuration, the knob 200 can be easily rotated counterclockwise by hooking the fingertip on the other surface 208.

That is, FIG. 7 shows a locked state, and in this locked state, a state in which the lever-like portion 204 hangs downward is formed. In this state, as shown in FIG. 8, for example, when the other surface 208 is hooked by a fingertip and the knob 200 is rotated counterclockwise, the lever-like portion 204 is ultrasonically detected as shown in FIG. 8. It moves to the tentacle side and it becomes horizontal. That state is an unlocked state. In the unlocked state, the engagement relationship between the tip of the lock pin and the base member is released, and the cover member 206 is detached from the base member 204. That is, the wearing state of both is eliminated. As shown in FIG. 8, when the lever-like portion 204 is in the horizontal state, the one surface 206 is in a substantially horizontal state. In this state, the lever-like portion 204 faces the ultrasonic probe 10 as shown in the drawing.

  By the way, it is possible to rotate the knob 200 by hooking the fingertip on the other surface 208, or it is possible to rotate the cylindrical portion 202 with a plurality of fingertips. That is, since the knob portion 200 is constituted by a cylindrical portion and a lever-like portion that extends in series with the cylindrical portion, it is possible to provide a degree of freedom in the manner of the rotation operation. As will be described below, in a state where the cover member 26 is detached from the base member 24, it is possible to prevent the cover member from falling off by sandwiching the knob portion 200 between two fingers.

  FIG. 9 shows the state, that is, the state where the knob portion 200 is rotated and the lever-like portion 204 is in a horizontal state. As described above, this horizontal state can be easily formed by hooking the other surface 208 with the fingertip of one finger, for example. As shown in the figure, the knob portion 200 extends in the horizontal direction as a whole, and the knob portion 200 is sandwiched between two fingers 210 and 212. As a result, it is possible to effectively prevent the cover member from dropping from the base member and causing a safety problem, and in particular, the unlocking operation can be performed by the hand holding the ultrasonic probe. At the same time, there is an advantage that it can be prevented from dropping after the unlocking operation. In that case, it is possible to hold the puncture needle or perform other operations with the other hand. Incidentally, the two fingers 210 and 212 shown in FIG. 9 may be an index finger and a middle finger, or may be a middle finger and a ring finger. In the above-described embodiment, the knob 202 is rotated in the counterclockwise direction, but may be rotated in the clockwise direction. In the above embodiment, the curved shape is employed only for the latter of the one surface and the other surface, but the curved shape may be employed for the other surface.

  In this embodiment, a lever-like portion extending on one side of the cylindrical member is formed, but a similar lever-like shape may be adopted on the other side. However, in the present embodiment, the shape of the cylindrical portion can be substantially left, so that the portion can be easily picked and held. According to the above embodiment, the knob portion has a unique form, and can be easily formed in an unlocked state by rotating the knob portion by 90 degrees, and the cover member can be prevented from falling off. Therefore, there is an advantage that operability and safety can be greatly improved.

It is a perspective view of the puncture adapter as a comparative example. It is a figure which shows two puncture paths with respect to a scanning surface. It is a figure which shows the state which removed the cover member from the base member. It is the perspective view which looked at the adapter main body from the other direction. It is the perspective view which looked at the cover member from the other side. It is a figure which shows the state which attached the cover member to the base member. It is a perspective view which shows embodiment of the puncture adapter which concerns on this invention. It is a perspective view which shows embodiment of the puncture adapter which concerns on this invention. It is an enlarged view which shows the state which pinched the lever-shaped part with two fingers.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Ultrasonic probe, 12 Puncture adapter, 14 Adapter main body, 16 Attachment mechanism, 20 Guide mechanism, 24 Base member, 26 Cover member, 30 1st engagement structure, 32 2nd engagement structure, 34 3rd engagement Structure, 40 1st guide route, 42 2nd guide route, 200 Knob part, 202 Cylindrical part, 204 Lever-like part, 206 One side, 208 The other side.

Claims (5)

An attachment mechanism attached to an ultrasonic probe for transmitting and receiving ultrasonic waves;
A puncture needle guide mechanism comprising: a base member held by the attachment mechanism; a cover member detachably joined to the base member; and a lock mechanism for holding a joined state of the cover member to the base member; ,
Including
The locking mechanism is
A lock pin for fastening the base member and the cover member;
A knob connected to an end of the lock pin, for rotating the lock pin;
Have
The knob part is a cylindrical part having the center of rotation of the knob part in the center , and a part that bulges outward from the cylindrical part and extends , and faces the ultrasonic probe when it becomes horizontal. A lever-like portion,
A puncture adapter for an ultrasonic probe characterized by the above. The puncture adapter according to claim 1, wherein
The knob has a teardrop shape,
A puncture adapter for an ultrasonic probe characterized by the above. An attachment mechanism attached to an ultrasonic probe for transmitting and receiving ultrasonic waves;
A puncture needle guide mechanism comprising: a base member held by the attachment mechanism; a cover member detachably joined to the base member; and a lock mechanism for holding a joined state of the cover member to the base member; ,
Including
The locking mechanism is
A lock pin for fastening the base member and the cover member;
A knob connected to an end of the lock pin, for rotating the lock pin;
Have
The knob has a lever-like portion extending outward from the rotation center of the knob,
The knob has a posture in which the lever-like portion hangs downward from the rotation center when the lock mechanism is locked, and a posture in which the lever-like portion faces the horizontal direction from the rotation center when the lock mechanism is unlocked. Become,
A puncture adapter for an ultrasonic probe characterized by the above. The puncture adapter according to claim 3,
When the locking mechanism is unlocked, the lever-like portion is in a horizontal state facing the ultrasonic probe side, and the lever-like portion is held by two fingers of the hand holding the ultrasonic probe. Can hold it,
A puncture adapter for an ultrasonic probe characterized by the above. The puncture adapter according to claim 4, wherein
One side of the lever-like portion has a hook shape that is gently recessed to receive a fingertip,
A puncture adapter for an ultrasonic probe characterized by the above.

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