JP2004049554A - Ultrasonic treatment instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic treatment instrument which has a grasping member located at the distal end of a working part and replaced by a simple method accepted easily by a user. <P>SOLUTION: This ultrasonic treatment instrument has the grasping member 42 on the distal end of the working part 15 which grasps biological tissues with a treatment part of a probe 3 for transmitting ultrasonic vibrations from a transducer unit 2 to generate the ultrasonic vibrations and treating the biological tissues with the ultrasonic vibrations. The grasping member 42 is mounted on the distal end of the working part 15 in a locked state, and is removed from the distal end of the working part 15 with a tool 64 prepared only for the purpose. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ultrasonic treatment tool including a grip for gripping a living tissue with a probe that transmits ultrasonic vibration.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 2000-296132 discloses an ultrasonic treatment instrument that performs treatment such as incision, excision, or coagulation of a living tissue using ultrasonic waves. This ultrasonic treatment device has a long insertion portion for insertion into a body cavity, a rotatable tip action portion is provided at a tip portion of the insertion portion, and the tip action portion and the ultrasonic probe are connected to each other. The living tissue is grasped in between, and treatment such as coagulation and incision is performed on the living tissue.
[0003]
A grasping member that contacts the living tissue when grasping the living tissue is attached to the distal end working portion of such an ultrasonic treatment instrument. Since the gripping member is positioned to face the probe, it often contacts the probe during coagulation and incision, and is a part that is easily worn. Therefore, this gripping member has been formed of a member such as a resin having a low friction coefficient such as polytetrafluoroethylene.
[0004]
[Problems to be solved by the invention]
As described above, the gripping member is a portion that is easily touched and easily damaged by the probe, and the life of the gripping member comes earlier than other parts. Even if other parts were still usable, the whole unit had to be replaced together with other parts, which was uneconomical.
[0005]
Therefore, if a member whose service life is longer than that of the gripping member is left and only the gripping member near the end of its life can be replaced, the operation management cost can be reduced. Further, while it is necessary that the gripping member does not easily come off, it is desired that the replacement of the gripping member can be easily performed in consideration of performing the replacement operation during the operation.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an ultrasonic treatment device capable of exchanging a gripping member at a distal end working portion in a simple manner that is easy for a user to accept. As a result, the operation management cost is reduced, and the merit for doctors and patients is further improved.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a vibrator that generates ultrasonic vibration, and is detachably attached to the vibrator, transmits ultrasonic vibration from the vibrator to a distal end portion, and applies a living tissue to the distal end portion. A probe having a treatment section for performing treatment by ultrasonic vibration, a distal end working section having a gripping section for gripping the living tissue with the treatment section of the probe, and a distal end operating section having the gripping section. Locking means for locking the member in a locked state, and a locking means capable of removing the member of the gripping portion assembled to the distal end working portion by using a dedicated tool, is there.
According to a second aspect of the present invention, in the locking means, a locking portion utilizing elastic deformation is provided on at least one of the distal end working portion and the member of the grip portion. The ultrasonic treatment device according to claim 1, further comprising a mechanism that locks both of the members of the grip portion and suppresses the elastic deformation in a locked state.
[0008]
The invention according to claim 3 is the ultrasonic treatment device according to claim 2, wherein the locked state for suppressing the elastic deformation is released by the dedicated tool.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An ultrasonic treatment device 1 according to one embodiment of the present invention will be described with reference to the drawings. The ultrasonic treatment tool 1 of the present embodiment includes a transducer unit 2, a probe (or probe unit) 3, and a handle unit 4. These units do not require any special work, and can be easily disassembled and assembled in a predetermined manner.
[0010]
The vibrator unit 2 has a piezoelectric element (not shown) for converting a current into ultrasonic vibration, and this piezoelectric element is covered by a vibrator cover 5. A cord 6 extending to a power supply main body (not shown) is connected to the rear end of the vibrator cover 5, and a drive current is supplied from the power supply main body to the piezoelectric element through the cord 6.
[0011]
As shown in FIG. 5, a horn 9 is provided at the front end of the piezoelectric element, and the horn 9 transmits ultrasonic vibration generated by the piezoelectric element to the probe 3 attached to the vibrator unit 2. It has become.
[0012]
An attachment 10 for connecting the handle unit 4 is fixedly provided at a front end of the vibrator cover 5. A circumferential groove 10a is formed on the outer periphery of the front end portion of the attachment 10, and a metal ring 11 with a part cut away is fitted and attached to the circumferential groove 10a.
[0013]
The tip of the horn 9 is provided with a screw portion 12 for detachably attaching the probe 3. Further, a screw portion 13 for screw connection with the screw portion 12 of the horn 9 is provided at the base end of the probe 3. The probe 3 and the horn 9 are connected on the same straight line by screw-connecting these screw portions 12 and 13. In this connection state, the entire length up to the tip of the probe 3 is designed to be an integral multiple of a half wavelength of the ultrasonic vibration.
[0014]
The probe 3 in the present embodiment has a straight shape from the base end to the tip as shown in FIG. Several portions of the vibration node in the middle of the probe 3 form a portion for reducing the cross-sectional area in the axial direction, so that the amplitude required for the treatment can be obtained at the probe tip. Further, rubber rings 37 for preventing interference between the probe 3 and the handle unit 4 are attached at several positions of the nodes of the vibration. Further, a flange portion 7 is formed integrally with the vibration node located at the most proximal end. As shown in FIG. 7B, which is a cross section along the line GG in FIG. 7A, flat portions 7a are provided at several places on the outer peripheral portion of the flange portion 7.
[0015]
The handle unit 4 includes a long-axis insertion portion 14 having a distal end portion to be inserted into a body cavity of a patient at the time of an operation, and an operation portion 16, and the operation portion 16 is provided at the distal end of the insertion portion 14. A fixed handle 27 for operating the action section 15 and a movable handle 29 rotatably mounted via a fulcrum pin 28 provided on the fixed handle 27 are provided. As shown in FIG. 6, a bush 53 made of PTFE or the like having a low friction coefficient is arranged on the outer periphery of the fulcrum pin 28 in order to improve the slidability of the movable handle 29.
[0016]
As shown in FIG. 1, the fixed handle 27 and the movable handle 29 are provided with finger hooks 30, 31, respectively. The operator can rotate the movable handle 29 about the fulcrum pin 28 by holding the fingers of one hand on the finger hooks 30 and 31 and holding the fingers.
[0017]
As shown in FIG. 3, the insertion section 14 is configured by an outer pipe 17 extending from the operation section 16. As shown in FIG. 5, the outer pipe 17 is fixed to a pipe fixing member 25 at its proximal end. An inner pipe 18 is provided inside the outer pipe 17. The inner space of the inner pipe 18 forms a channel through which the probe 3 passes. In addition, a channel is formed between the outer pipe 17 and the inner pipe 18 of the insertion portion 14 so that a drive shaft (body) 23 for operating the distal end working portion 15 can be inserted and retracted. The outer peripheral surface of the outer pipe 17 is covered with an electrically insulating tube 38.
[0018]
As shown in FIG. 5, the pipe fixing member 25 of the insertion section 14 is fixed to the connecting member 44 via the fixing pin 35. The connecting member 44 is attached to the member of the fixed handle 27 by a fixing ring 45 so as to be rotatable around the insertion portion axis. A rotation knob 26 is fixedly attached to the outer peripheral portion on the distal end side of the connecting member 44, and the entire insertion portion 14 including the distal end working portion 15 can be integrally rotated by rotating the rotary knob 26. Has become.
[0019]
As shown in FIG. 5, the base end of the drive shaft 23 is connected to a drive force transmission intermediate member 48 disposed in the operation section 16 via a drive force transmission pin 40. The driving force transmission intermediate member 48 is attached by a pin 50 to a slider receiving member 49 arranged in the operation section 16. A slider member 41 is disposed on the outer periphery of the slider receiving member 49 so as to be slidable in the axial direction. A coil-shaped spring 51 is wound around the outer periphery of the slider receiving member 49, and the spring 51 is interposed between the slider member 41 and the driving force transmitting intermediate member 48, and has a fixed amount of driving force. Is biased forward.
[0020]
A slit 44a is formed in the connecting member 44 along the axial direction, and a pin 46 provided on the driving force transmitting intermediate member 48 is fitted into and engaged with the slit 44a. The relative rotation around the axis of the connecting member 44 and the driving force transmission intermediate member 48 is regulated by the pin 46, and both rotate integrally in the direction around the axis. However, only the driving force transmitting intermediate member 48 can move in the axial direction.
[0021]
As shown in FIG. 5, a packing 56 for sealing the gap is attached between the fitting portion of the connecting member 44 and the driving force transmitting intermediate member 48, and the packing 56 is used to perform insufflation during laparoscopic surgery. Gas or the like is prevented from leaking from the distal end side of the insertion portion to the outside through the gap. The interference prevention rings 54 and 55 made of PTFE having a low friction coefficient are arranged inside the rear end portion of the pipe fixing member 25 and inside the driving force transmission intermediate member 48, so that each member does not directly contact the probe 3. It has become.
[0022]
As shown in FIG. 6, flat portions 47 are formed at two locations facing each other on the inner surface of the base end portion of the slider receiving member 49, and the inside of the slider receiving member 49 is an irregular hole. A contact member 57 made of a conductive member having an outer shape and engaging with the hole having the flat portion 47 is fitted inside the irregular hole.
[0023]
As shown in FIG. 5, a ring-shaped connection rubber 58 made of conductive rubber is attached to the tip end portion of the contact member 57 near the node of vibration of the probe 3. The connection rubber 58 electrically connects the probe 3 and the contact member 57. A projection 59 serving as a packing is provided on the outer peripheral surface of the connection rubber 58, and the projection 59 leaks insufflation gas or the like that leaks from a distal end of the insertion portion through a gap during laparoscopic surgery. To prevent
[0024]
Furthermore, the rear end side cylindrical portion of the contact member 57 is formed so as to be deformable in the radial direction by providing one or a plurality of slits. On the outer periphery of the rear end of the contact member 57, there is provided a projection 57a that engages with a circumferential groove 32a formed in the connection member 32 described later. The outer periphery of the flange portion 7 of the probe 3 is engaged with the inner surface of the contact member 57 at the front end side. For this reason, the contact member 57 has its front end side inner surface portion formed in the same shape as the outer periphery of the flange portion 7.
[0025]
Further, as shown in FIG. 5, connecting members 32 and 33 are fixed to the inner surface of the rear end of the fixed handle 27 so as to form a groove 36 for engaging with the ring 11 of the vibrator unit 2. The ring 11 can be attached to and detached from the groove 36 formed by the connecting members 32 and 33 by elastically deforming itself, and the handle unit 4 is detachably engaged with the vibrator unit 2 using this. It is to be assembled and fixed. The projection 57a at the rear end of the contact member 57 has an outer diameter larger than the inner diameter of the connection member 32, and comes into contact with the inside of the connection member 32 while being elastically deformed by the slit structure. It is engaged with the circumferential groove 32a. At this time, the contact member 57 engages with the slider receiving member 49 at a portion having an irregular shape, whereby the contact member 57 is integrally rotated in the rotation direction.
[0026]
As shown in FIG. 5, a high-frequency connection pin 60 is screwed on the upper end of the fixed handle 27 so as to be electrically connected to the connection member 32. An active cord (not shown) for supplying a high-frequency current from a high-frequency cautery power supply (not shown) is connected to the high-frequency connection pin 60. A portion of the high-frequency connection pin 60 that is exposed when the active cord (not shown) is attached is covered with an insulating cover 60a, so that electrical safety can be secured.
[0027]
In the above configuration, when the rotary knob 26 is rotated, the contact member 57 and the probe 3 are integrally rotated around the same axis via the connecting member 44, the driving force transmitting intermediate member 48 and the slider receiving member 49 in conjunction with the rotation of the rotary knob 26. During this rotation operation, the projection 57a of the contact member 57 is always in contact with the connection member 32 by the elastic force of the contact member 57, and is electrically connected. As a result, since the high-frequency connection pin 60 and the probe 3 are electrically connected via the connection member 32, the contact member 57, and the connection rubber 58, a high-frequency current is supplied to the distal end of the probe 3 through these, and the high-frequency current is supplied. Thus, high-frequency treatment of living tissue is possible.
[0028]
As shown in FIGS. 5 and 6, an operation pin 34 is attached to the movable handle 29, and the operation pin 34 is engaged with a concave portion 41 a formed in the fixed handle 27 and formed by a circumferential groove of the slider member 41. .
[0029]
Therefore, when the movable handle 29 is rotated, the operation pin 34 moves with the rotation, and moves in the axial direction with respect to the slider member 41 in the fixed handle 27 within the range of the installed force of the spring 51 to drive the movable member 29. A force is transmitted, and the driving force rotates a distal end working portion 15 described later.
[0030]
Next, the distal end working portion 15 provided at the distal end of the insertion portion 14 will be described with reference to FIG. The distal end working portion 15 includes the grip portion 8 and the jaw 20. The grasping portion 8 is attached to the jaw 20 in a locked state as described later, and the treatment portion of the probe 3 and the grasping portion thereof are arranged by arranging the grasping portion 8 at a position facing the treatment portion including the distal end portion of the probe 3. The living tissue can be grasped between the sections 8.
[0031]
A tip cover 19 is fixedly attached to the tip of the outer pipe 17. The distal end working portion 15 is assembled to the distal end cover 19. Inside the distal end cover 19, an electrically insulating suppressing member 39 formed of a material having a low friction coefficient and formed in a cylindrical shape is arranged, and the distal end cover 19 directly contacts the probe 3 by the pressing member 39. To prevent that.
[0032]
The jaw 20 of the distal end working portion 15 is rotatably attached to the distal end cover 19 by two fulcrum pins 21 arranged on the left and right of the front end of the distal end cover 19. The front end of the drive shaft 23 is connected to the rear end of the jaw 20 via a pin 22 (see FIG. 4). The rear end of the drive shaft 23 extends between the front cover 19 and the outer pipe 17 and the inner pipe 18 in the insertion section 14, extends to the operation section 16, and is connected to the slider receiving member 49. Then, the drive shaft 23 is moved forward and backward by a slider member 41 which is moved by a movable handle 29, and rotates the jaw 20.
[0033]
The jaw 20 is provided with a protruding portion 20b composed of a pair of upper and lower pieces formed with a slit 20a elastically deformable with a certain amount of force so as to protrude forward. Each of the protruding portions of the protruding portion 20b is provided with a protruding portion 20c which bulges outward at a tip portion thereof. The projecting portion 20b is provided with an elastic action by the slit 20a, so that the projecting portion 20c is engaged with a grip portion 8 described later by a snap lock method. The gripper 8 is detachably connected to the jaw 20.
[0034]
Next, a configuration of a connecting portion for detachably connecting the grip portion 8 to the jaw 20 will be described with reference to FIG. The grip portion 8 includes a mounting member 24 and a gripping member 42 formed so as to cover the periphery of the mounting member 24. The attachment member 24 has an engagement hole 42a into which the protrusion 20b of the jaw 20 is inserted. A lock pin 61 which is located on the back side and is movable in the axial direction inside the engagement hole 42a, a coil-shaped spring 62 wound around the outer periphery of the lock pin 61, and a lock pin 61 at the entrance side of the engagement hole 42a. A fixed pipe 63 is located and closely fitted to and fixed to the entrance.
[0035]
Further, a flange 61a is formed on the outer periphery of the shaft base end of the lock pin 61, and a base end side of the flange 61a is formed as a head 61b. The spring 62 is compressed and interposed between the inner end wall of the engaging hole 24 a and the flange 61 a of the lock pin 61, and urges the lock pin 61 toward the fixed pipe 63.
[0036]
As shown in FIG. 3, in the mounted state in which the grip portion 8 is assembled to the jaw 20, the head 61b of the lock pin 61 enters the tip of the slit 20a of the projection 20b of the jaw 20, and at the same time, the flange 61a projects. 20b. Further, the protrusion 20 c of the protrusion 20 b of the jaw 20 is locked to the inner end of the fixed pipe 63.
[0037]
That is, the grip 8 is connected to the jaw 20 in a locked state by the snap lock method. In this case, the protruding portion 20a having the slit 20a fits inside the fixed pipe 63, and the protruding portion (locking portion) 20c of the protruding portion 20b engages with the inner end (locking portion) of the fixed pipe 63. Further, since the lock pin 61 is urged toward the shaft base end by the spring 62, the head portion 61b of the lock pin 61 enters the slit 20a and engages with the protruding portion 20b. And the mechanism which suppresses the elastic deformation to the inside of the protrusion part 20b is comprised. Therefore, the jaws 20 are automatically mounted by the operation of fitting the jaws 20 into the grip portions 8, and once mounted, cannot be easily removed. In this manner, in the assembled state in which the grip portion 8 is fixedly mounted in the lock type, the grip portion 8 is not easily detached even when pulled in the pulling-out direction.
[0038]
Further, as shown in FIG. 8, the holding portion 8 is formed with a hole 8a including a hole so as to be able to communicate from the side surface into the slit 20a. In the present embodiment, the hole 8a penetrates the grip 8 right and left so as to cross. A lock release pin 66 of a disassembly jig 64 described later can be inserted into the hole 8a.
[0039]
Next, the disassembly jig 64 will be described. As shown in FIG. 8, the disassembling jig 64 has a positioning surface 65a formed in a hook shape so as to join from the side surface to the distal end surface of the distal end working portion 15 in which the grip portion 8 is attached to the jaw 20, and The lock release pin 66 is provided on the surface 65a so as to protrude vertically. The lock release pin 66 is smaller than the width of the slit 20a in the protrusion 20b of the jaw 20, and has a diameter that does not hinder the compression deformation of the protrusion 20b.
[0040]
When the gripper 8 is detached from the jaw 20 using the disassembly jig 64, as shown in FIG. The tool 64 is set. At this time, the lock release pin 66 naturally enters the hole 8a of the grip portion 8. When the lock release pin 66 is inserted into the hole 8a of the grip portion 8, the lock release pin 66 naturally enters the slit 20a as shown in FIG.
[0041]
Then, by pulling the disassembly jig 64 in the direction of the arrow shown in FIG. 8, the lock release pin 66 hits the head 61b of the lock pin 61 as shown in FIG. 9B. When the head 61b of the lock pin 61 is pushed until it comes off the slit 20a, the protrusion 20b of the jaw 20 is released from the lock pin 61. That is, since the lock operation of the lock pin 61 is released, the protruding portion 20b of the jaw 20 becomes deformable, and the lock engagement state is released. Subsequently, the grip portion 8 can be removed from the jaw 20 by pulling the grip portion 8 in the direction of the arrow.
[0042]
On the other hand, when attaching the grip portion 8 to the jaw 20, the protrusion 20b of the jaw 20 may be inserted and inserted into the engaging hole 42a of the grip portion 8 as it is from the distal end side, and the disassembling jig 64 is used. It can be done without. That is, since the protruding portion 20b is deformable, it can enter the engaging hole 42a and push the lock pin 61 further than the inner end position of the fixed pipe 63. When the protrusion 20c of the protrusion 20b comes out of the inner end position of the fixed pipe 63, the deformation of the protrusion 20b returns to its original state, and the protrusion 20c is locked to the inner end of the fixed pipe 63. Since the lock pin 61 is urged by the spring 62, the head 61b of the lock pin 61 then enters into the tip of the slit 20a of the protruding portion 20b of the jaw 20, as shown in FIG. It automatically returns to the position where 61a hits the tip of protrusion 20b. Then, the protruding portion 20b of the jaw 20 is widened and the protruding portion 20c is locked to the inner end of the fixed pipe 63. Thus, the gripper 8 can be easily attached to the jaw 20 until it is automatically locked. As described above, when the grip portion 8 is attached to the jaw 20, it can be easily attached without using the disassembling jig 64.
[0043]
As described above, in the present embodiment, the dedicated disassembling jig 64 is used when removing the grip portion 8 from the jaw 20, but the dedicated disassembly jig 64 is used when attaching the grip portion 8 to the jaw 20. It can be easily installed without.
[0044]
Lastly, a description will be given of an operation method when the living body tissue is treated with ultrasonic waves by using the ultrasonic treatment instrument 1 having the above configuration. When a finger is hung on the fixed handle 27 and the movable handle 29 of the handle unit 4 and the movable handle 29 is rotated, the operation pin 34 connected to the movable handle 29 is rotated via the fulcrum pin 28 and engaged with the operation pin 34. The fitted slider member 41 moves forward and backward in the axial direction according to the rotational direction. Further, the driving force transmitting intermediate member 48 connected to the slider member 41 via the spring 51 also advances and retreats, and the driving shaft 23 advances and retreats via the driving force transmitting pin 40. As a result, the jaw 20 at the distal end of the insertion portion rotates via the fulcrum pin 21.
[0045]
With this operation, when the living tissue is sandwiched between the gripping member 42 of the distal end working unit 15 and the probe 3, the gripping member 42 rotates by a fixed angle around the pin 43 as a fulcrum following the deflection of the probe 3, and Force is applied uniformly over the entire length. When an ultrasonic wave is output to the probe 3 in this state, coagulation and incision of a living tissue such as a blood vessel can be performed.
[0046]
Further, it is also possible to supply a high-frequency current from the high-frequency connection pin 60 to the distal end of the probe 3 and to perform a high-frequency treatment on a living tissue with the high-frequency current.
[0047]
The holding portion 8 of the ultrasonic treatment tool 1 according to the present embodiment can be applied to, for example, one having a curved distal end as shown in FIG.
[0048]
【The invention's effect】
As described above, by using the ultrasonic treatment tool of the present invention, even if the life of the grip is earlier, it becomes possible to further use the grip by exchanging only the grip, thereby greatly reducing the cost of the surgical operation. Can be cheaper. Furthermore, by simply inserting the grip, inserting and removing the grip using a disassembly jig, the user can easily replace it and use it safely without detaching during use. There are benefits that can be done.
[Brief description of the drawings]
FIG. 1 is an external view of an entire ultrasonic treatment instrument according to an embodiment of the present invention.
2A and 2B show a distal end portion of an ultrasonic treatment device according to an embodiment of the present invention, wherein FIG. 2A is an external view of the distal end portion as viewed from above, and FIG. FIG.
FIG. 3 is a longitudinal sectional view of a distal end portion of the ultrasonic treatment device according to one embodiment of the present invention.
FIG. 4 is a sectional view taken along line AA in FIG. 3;
FIG. 5 is a longitudinal sectional view of an operation unit in the ultrasonic treatment device according to one embodiment of the present invention.
FIG. 6 is a cross-sectional view of the operation unit cut along the line EE in FIG. 5;
7A and 7B show a probe of an ultrasonic treatment device according to an embodiment of the present invention, wherein FIG. 7A is an external view of the probe, and FIG. 7B is a cross section of the probe taken along line EE of FIG. FIG.
FIG. 8 is a plan view showing a state in which a disassembly jig is attached to a distal end portion of the ultrasonic treatment tool according to one embodiment of the present invention.
FIG. 9 is an explanatory view of a disassembling operation procedure when removing the gripping member using the disassembly jig.
FIG. 10 is an explanatory view showing a curved distal end portion and a disassembled jig mounted state in the ultrasonic treatment instrument according to one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ultrasonic treatment tool, 2 ... Transducer unit, 3 ... Probe,
4 Handle unit, 5 Vibrator cover, 8 Handle part,
8a ... hole, 9 ... horn, 14 ... insertion part, 15 ... tip working part,
20 ... Jaw, 20a ... Slit, 20c ... Protrusion,
23: drive shaft, 24: mounting member, 42: gripping member,
61 ... lock pin, 61a ... flange, 61b ... head,
62: spring, 63: fixed pipe, 64: disassembly jig.

Claims (3)

A vibrator for generating ultrasonic vibration,
A probe that is detachably attached to the vibrator, transmits ultrasonic vibration from the vibrator to the distal end, and forms a treatment section for treating living tissue with the distal end with ultrasonic waves,
A distal end working unit having a gripping unit for gripping the living tissue with the treatment unit of the probe,
Locking means for locking the member of the gripping portion to the distal end operating portion in a locked state, and detachable using a dedicated tool, the member of the gripping portion assembled to the distal end operating portion,
An ultrasonic treatment instrument comprising: In the locking means, a locking portion utilizing elastic deformation is provided on at least one of the distal working portion and the member of the grip portion, and the locking portion locks both the distal working portion and the grip portion. The ultrasonic treatment device according to claim 1, further comprising a mechanism for suppressing the elastic deformation in a locked state. The ultrasonic treatment device according to claim 2, wherein the lock state for suppressing the elastic deformation is released by the dedicated tool.

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