KR101483579B1 - Dental Ultrasonic Tool Scraping Or Cutting Cortical Bone For Orthodontic Treatment And Dental Ultrasonic Tool Set Having The Same - Google Patents

Abstract

Disclosed is a dental ultrasonic tool for orthodontic treatment comprising: a tool shank equipped on a handpiece constituting a handle and disposed on the same plane as the handpiece; and a tool head equipped on the front end of the tool shank and damaging the cortical bone by applying ultrasonic stimuli to the cortical bone. In the present invention, a first plane vertically crossing a direction which the tool head faces and a second plane in which the handpiece and tool shank are disposed make an acute angle so that the handpiece can be diagonally extended with respect to the applied region of the ultrasonic tool. According to the present invention, the applied region (surgical surface) facing the tool head makes an acute angle with the handpiece so that an operator can naturally see and move his/her wrist and a procedure can be conveniently performed. A wide field of view of the applied region can be ensured, and the ultrasound tool can be freely handled.

Description

TECHNICAL FIELD [0001] The present invention relates to a dental ultrasound tool for orthodontic treatment and a dental ultrasound tool having the same.

The present invention relates to a dental ultrasound tool, and more particularly, to a dental ultrasound tool for dental orthodontics, which enters into a tunnel formed between a soft tissue and a cortical bone for shortening a treatment period (correction period) Dental ultrasound tools and ultrasound tool sets.

Dental orthodontics, especially orthodontic procedures, require a gradual movement of the teeth, so the treatment period (correction period) is long. Therefore, it may be a burden to the patient to wear the orthodontic appliance such as the bracket and the orthodontic wire for a long period of time in the oral cavity, which is the most hesitant part of patients who want to receive orthodontic treatment.

Therefore, several methods are being used to reduce the correction period as much as possible. In the various methods, one or several methods are used simultaneously according to the patient's condition to shorten the total correction period, It is reducing inconvenience.

The procedures used to shorten the above-mentioned calibration period include a procedure using a self-ligation bracket, a procedure using a screw, and a cortical resection procedure in which a tooth is rapidly moved by damaging a hard cortical bone surrounding the tooth .

Among the various kinds of procedures described above, the corticotomy will be described in more detail as follows.

The alveolar bone surrounding the tooth and the palate of the palate (palate bone) are composed of two layers of fine cortical bone, which are the outer cancellous bone of the cancellous bone and the bone tissue. Since the cortical bone is hardened and acts as a resistance in tooth movement, the tooth movement is accelerated through the cortical bone resection, thereby shortening the correction period.

For example, in order to accelerate tooth movement in dental orthodontics, more specifically orthodontic treatment, it may be possible to perform a procedure in which damage to the cortical bone (cortical bone) in the area between the root (tooth root) , Which is a method of using Regional Acceleratory Phenomenon (RAP) induced through selective cortical bone damage.

More specifically, when the cortical bone is damaged through the resection of the cortical bone, such as drilling a hole in a hard cortical bone or digging a groove, the above-mentioned local cure promoting phenomenon is induced. This is because the cortical bone damaged region and surrounding bone are softened , Resistance to tooth movement is reduced by softening of the damaged region and its surrounding bone, and consequently, the effect of shortening the correction period can be obtained.

On the other hand, ultrasonic waves can be used for the cortical bone injuring procedure, that is, for the cortical bone resection, and a dental ultrasonic surgical apparatus which forms a hole in the cortical bone by applying an ultrasonic stimulus (vibration) to the cortical bone or digs a groove can be used.

1 and 2, the ultrasonic surgical apparatus 10 includes a handpiece 1 and a dental ultrasound tool (not shown) coupled to the handpiece 1 and applying a stimulus, particularly ultrasonic vibration, to the cortical bone by a piezoelectric effect 2).

The ultrasonic tool 2 includes a tool bag 2a detachably coupled to the handpiece 1 and a tool head 2b provided at the tip of the tool body, ) Contact the cortical bone and apply ultrasonic stimulation to the cortical bone to form a groove or a hole in the cortical bone.

However, in the conventional ultrasonic tool 2, localized holes or fine grooves can be formed in the partial cortical bone exposed to the outside through the incision of the soft tissue (gum). However, in order to perform the cortical bone resection in a wide area, The incision area of the oral soft tissue should be increased, which increases the patient's pain.

Since the ultrasonic surgical instrument 10 is used in a narrow space inside the oral cavity, there is a restriction on the accessibility and handling of the site where the ultrasonic resection is required (the procedure site), and the handpiece and / It is difficult to obtain a sufficient visual field for the surgical site, and furthermore, there is a difficulty in performing the procedure because the posture is inconvenient when the operator performs sufficient curettage to the surgical site while performing corticotomy.

That is, when the operator performs ultrasonic excision while operating the handpiece 1 in a state where the tool head 2b is disposed on the treatment surface (treatment area), the angle of the operator's wrist and arm may be excessively bended When the treatment part is in the vicinity of the molar (molar), the handpiece 1 is interfered with the oral soft tissue around the facial soft tissue, lips and other teeth to restrict the handling of the ultrasonic surgical device 10, There is a problem such as difficulty in securing visibility.

Korean Patent Publication No. 10-2010-0019426, February 18, 2010

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-described problems of the prior art, and it is an object of the present invention to provide a method of treating a dental prosthesis, And a dental ultrasound tool set having the dental ultrasound tool.

It is a further object of the present invention to provide a method and a device for treating a cortical bone by entering into a space between a soft tissue and a cortical bone which is not exposed to the outside through a local incision of the soft tissue, The present invention provides a dental ultrasound tool capable of performing an ultrasound resection in a state of a living body.

In order to solve the above-mentioned problems, the present invention provides a hand shoe comprising: a tool shank provided on a hand piece constituting a handle and positioned on the same plane as the hand piece; And a tool head provided at a distal end of the tool bag and damaging the cortical bone by applying an ultrasonic stimulus to the cortical bone, the dental ultrasonic tool for orthodontic treatment comprising: A proximal bag extending as far as possible and extending along the axis of the handpiece or having an oblique shape bent in an oblique direction with respect to the axis of the handpiece so as to be out of the axis of the handpiece, Wherein the tool head is integrally provided at the distal end of the distal end and is positioned coplanar with the handpiece and tool bag, Wherein the handpiece is inclined in an oblique direction with respect to a part to be treated of the ultrasonic tool Wherein the first plane perpendicular to the direction in which the tool head is oriented and the virtual second plane in which the handpiece and the tool bag are located are formed at an acute angle so that the tool head is perpendicular to the tool head, Wherein an outflow hole capable of ejecting cooling water toward the first plane is provided on at least one of the front surface of the tool head and the distal sack, .

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The handpiece makes an acute angle with the right side of the first plane with reference to a state in which the tool head faces the right side of the first plane. And the handpiece may make an acute angle with the left side of the first plane based on a state in which the tool head faces the right side of the first plane.

In addition, the handpiece may have an acute angle with the right side of the first plane on the basis of a state in which the tool head faces the left side of the first plane. And the handpiece may make an acute angle with the left side of the first plane with reference to a state in which the tool head faces the left side of the first plane.

The first plane and the second plane form 20 ° to 70 °, and more specifically, 30 ° to 60 °.

In a further aspect the present invention provides a dental ultrasonic tool set for dental correction comprising a first ultrasonic tool and a second ultrasonic tool, the first ultrasonic tool and the second ultrasonic tool each comprising a handpiece And a tool head provided at the tip of the tool bag and damaging the cortical bone by applying ultrasonic vibration to the cortical bone, The tool bag includes a proximal bag detachably coupled to the handpiece and extending along an axis of the handpiece or having a shape bent in an oblique direction with respect to an axis of the handpiece so as to deviate from the axis of the handpiece, Wherein the tool head is integrally provided at the distal end of the distal end of the distal end of the distal end of the proximal end of the proximal end of the handpiece, Wherein a plane orthogonal to the direction of the tool head of the first ultrasonic tool and a plane on which the handpiece of the first ultrasonic tool and the tool bag are located form an acute angle; A plane orthogonal to the direction in which the tool head of the second ultrasonic tool is oriented and a plane on which the handpiece of the second ultrasonic tool and the tool bag are located form an acute angle; Wherein the tool head of the first ultrasonic tool and the tool head of the second ultrasonic tool are oriented in different directions and the tool heads of the first ultrasonic tool and the second ultrasonic tool are provided with planes orthogonal to the direction Wherein at least one of a front surface of each of the tool heads of the first ultrasonic tool and the second ultrasonic tool and a distal handle of the first ultrasonic tool is provided with a tool tooth protruded forward of the tool head, And an outflow hole capable of ejecting cooling water on a plane perpendicular to a direction in which the tool head is oriented and a plane perpendicular to a direction in which the tool head of the second ultrasonic tool is oriented.

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The dental ultrasound tool and the dental ultrasound tool set for dental correction according to the present invention have the following effects.

First, according to the present invention, since the treatment site (treatment surface) facing the tool head forms an acute angle with the handpiece, the operator's eyes and the direction of the wrist are natural and convenient, .

Second, according to the present invention, since the handpiece extends in the right oblique direction or in the left oblique direction with respect to the procedure surface, the operator manipulates the handpiece in a comfortable posture to move the tool head for ablation of the cortical bone And inconveniences such as excessive wrist bending or frequent movement of the operator according to the operation site can be reduced.

Third, according to the present invention, it is possible to reduce the interference between the oral cavity structure and the soft tissues around the lips and the lips and the handpiece, and the range in which the handpiece can move (the handling range) is widened. The accessibility of the ultrasonic tool can be greatly improved.

1 is a view showing an example of a conventional dental ultrasound machine.
2 is a front view of a conventional dental ultrasound tool.
3 is a perspective view illustrating an embodiment of a dental ultrasound tool for orthodontic treatment according to the present invention.
4 is a front view showing an embodiment of a dental ultrasound tool set for dental correction according to the present invention.
5 is a perspective view illustrating the use state of the dental ultrasound tool shown in FIG.
6 is a plan view showing the use state shown in Fig.
7 is a front view showing another embodiment of a dental ultrasound tool set for dental correction according to the present invention.
8 is a perspective view illustrating the use state of the dental ultrasound tool shown in FIG.
9 is a plan view showing the use state shown in Fig.
10 is a perspective view showing an example in which an incision is formed in an oral soft tissue for tunneling to form a tunnel under an oral soft tissue before performing cortical bone resection.
FIG. 11 is a cross-sectional view illustrating a tunneling operation for forming a tunnel under the oral soft tissue before the cortical bone resection using the dental ultrasound tool according to the present invention.
12 is a cross-sectional view illustrating cortical bone resection using a dental ultrasound tool according to the present invention.
13 is a perspective view showing another example of a tool head of a dental ultrasonic tool according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and additional description thereof will be omitted in the following.

3 to 6, an embodiment of a dental ultrasound tool (hereinafter abbreviated as 'ultrasound tool') and a dental ultrasound tool set having the ultrasound tool for dental correction according to the present invention will be described.

FIG. 3 is a perspective view illustrating an embodiment of a dental ultrasonic tool for orthodontic treatment according to the present invention, and FIG. 4 is a perspective view illustrating an embodiment of a dental ultrasonic tool set for orthodontic treatment according to the present invention. FIG. 5 is a perspective view illustrating the use state of the dental ultrasound tool shown in FIG. 4, and FIG. 6 is a plan view showing the use state shown in FIG.

3 to 6, the ultrasonic tools 100A and 100B according to the present invention are for performing a procedure for injuring the cortical bone to shorten the correction period, for example, cortical bone resection, and more specifically, In particular, it is a dental tool which is more effective in the procedure of entering the tunnel formed between the gum and the alveolar bone and damaging the cortical bone by applying ultrasonic stimulation to the cortical bone.

The ultrasonic tools 100A and 100B include a tool bag 110 provided in a handpiece 1 and tool heads 120 and 130 provided in the tool bag 110. [

Here, the handpiece 1 is a handle for handling the ultrasonic tool. In the present embodiment, the tool bag 110 is detachably coupled to the handpiece 1, (120, 130) are provided at the tip of the tool bag (110).

More specifically, the tool bag 110 is provided at the tip of the handpiece 1 and is supported by the handpiece 1. In this embodiment, the handpiece 1 and the tool bag 110 are located on the same plane. More specifically, the axes of the axis 1a of the handpiece 1 and the tool bag 110 are the same Plane. One end of the tool bag 110 is detachably coupled to one side (tip end) of the handpiece 1 and the tool head 120 is integrally provided at the other end of the tool bag 110. Consequently, the tool head, the handpiece, and the tool bag are both positioned on the same plane.

The tool heads 120 and 130 are provided on the tool sack 110 and are supported by the tool sack 110 to damage the cortical bone by applying ultrasonic stimulation to the cortical bone. The heads 120 and 130 have tool blades 121 and 131 for cortical bone damage.

The tool teeth 121 and 131 are formed along the edges of the tool heads 120 and 130 or protrude toward the front of the tool heads 120 and 130 The heads 120 and 130 may have various shapes. In this embodiment, the heads 120 and 130 may have a saw-tooth shape protruding forward from the tip of the tool head 120 and may be one or more lines.

Of course, the tool blades 121 and 131 may be formed on the front surface of the tool heads 120 and 130, and the direction of the tool blades 121 and 131 may be a width direction of the tool head But may be provided in a direction intersecting the width direction of the tool heads 120 and 130, for example, in the longitudinal direction.

In the ultrasonic tools 100A and 100B according to the present invention, the handpiece 1 faces an imaginary plane P1 (P1, P2) perpendicular to the direction in which the tool heads 120, 130 face the tool heads 120, ) And an acute angle.

More specifically, a virtual plane (hereinafter referred to as a 'first plane') perpendicular to the direction in which the tool heads 120 and 130 are oriented (hereinafter referred to as a 'first plane') and the handpiece 1 and the tool bag 110 The lines 120a and 130a perpendicular to the tool heads 120 and 130 and the axis 1a of the handpiece 1 are mutually perpendicular to each other so that a virtual plane (hereinafter referred to as a 'second plane' It is a structure in a crossed or twisted position.

3 to 6, there is shown an example of the ultrasonic tools 100A and 100B in which the tool heads 120 and 130 are arranged in the first plane P1 and perpendicular to the lines 120a and 130a perpendicular to the tool head The handpiece 1 has an acute angle with the right side of the first plane P1, that is, a structure in which the right side of the first plane P1 and the right side of the handpiece 1, A structure in which the angle [theta] of the light source 1 is an acute angle is exemplified. Thus, the handpiece 1 extends toward the practitioner in the first plane P1, more specifically in the oblique direction of the treatment surface.

More specifically, as shown in FIGS. 5A and 6A, in a state in which the tool head 120 faces the left side of the first plane P1 The axis 1a of the handpiece 1, particularly the handpiece, may be at an acute angle with the right side of the first plane P1 on the basis of the right- the operator of the handler can perform the corticotomy (the operation of damaging the cortical bone) by holding the handpiece 1 extending in the right oblique direction with respect to the treatment surface (the ultrasound procedure part), and in particular, This is the effective structure (the first structure) when the cortical bone resection is performed on the left side of the lingual cortical bone (the tool head is directed to the right side), for example, the dorsal cortex of the maxillary right posterior tooth.

As shown in Figs. 5 (b) and 6 (b), when the tool head 130 faces the right side of the first plane P1 (the first plane is located on the left side of the tool head The axis 1a of the handpiece 1, particularly the handpiece, may be at an acute angle with the right side of the first plane P1, so that the practitioner of the right- The cortical bone resection can be performed by holding the handpiece 1 extending in the right oblique direction with respect to the treatment surface. In particular, the treatment surface facing the right side (the tool head is directed to the left side), for example, It is an effective structure (the second structure) when cortical resection is performed on the lingual cortical bone of the left posterior part.

According to the ultrasonic tool set constituted by the ultrasonic tool having the above-described structure, since the handpiece 1 is disposed forward in the oblique right direction with respect to the treatment surface, A force component and a horizontal component force are applied to induce smooth contact between the treatment surface and the tool head, and a right-handed operator manipulates the ultrasonic tools 100A and 100B while moving the handpiece 1 It is possible to minimize the interference between the handpiece 1 and the soft tissue of the facial soft tissue, for example, the incisal side, or the teeth, and it is possible to secure a wide field of view for the treatment site.

Next, another embodiment of the ultrasonic tool set according to the present invention will be described with reference to Figs. 7 to 9. Fig.

Referring to FIGS. 7 to 9, another example of the ultrasonic tool 100C and 100D may be used. The tool head 140 and the tool head 150 may face the left or right side of the first plane P1. A structure in which the handpiece 1 has an acute angle with the left side of the first plane P1, that is, a structure in which the angle between the left side of the first plane P1 and the handle is an acute angle is exemplified. Thus, the handpiece 1 extends toward the practitioner in the first plane P1, more specifically in the left oblique direction of the procedure surface.

More specifically, as shown in Figs. 8 (a) and 9 (a), on the basis of a state in which the tool head 140 faces the right side of the first plane P1, (1) In particular, the axis 1a of the handpiece may be at an acute angle with the left side of the first plane P1, so that the practitioner of the left- The cortical bone resection can be performed by holding the handpiece 1 extending in the direction of the cervical vertebra. In particular, when the surgeon looks at the right side, the cortical bone resection procedure is effective (third structure).

As shown in Figs. 7 (b) and 8 (b), the tool head 150 is opposed to the left side of the first plane P1, The axis 1a of the handpiece is at an acute angle with the left side of the first plane P1 so that the left handed operator grips the handpiece 1 extending in the left diagonal direction with respect to the treatment surface and performs cortical bone resection And it is an effective structure (the fourth structure) when the cortical bone resection is performed on the treatment surface facing the left side, especially when the operator looks at it.

Accordingly, the ultrasonic tools of the above-described four structures have different directions of the tool heads 130 and 150 with respect to the axis of the handpiece 1, and the ultrasonic tools of any one of the above- One of the three ultrasonic tools is called a first ultrasonic tool and the other one of the three structures is called a second ultrasonic tool, the tool head of the first ultrasonic tool and the tool head of the second ultrasonic tool have different structures.

The ultrasonic tools of the first structure and the second structure described above may be one set, and the ultrasonic tools of the third structure and the fourth structure may be one set. However, the present invention is not limited thereto. They can be selected together and combined into one set, and all four structures can be included in one set.

In the present invention, the angle between the first plane and the second plane may be 20 ° to 70 °, more specifically, 30 ° to 60 °. The tool bag 110 is provided at one end of the handpiece 1 in a bent shape.

In more detail, the tool bag 110 comprises a proximal bag 111 and a distal bag 112. The proximal bag 111 is detachably coupled to the handpiece 1 and extends along the axis 1a of the handpiece or extends beyond the axis 1a of the handpiece, And may have a shape bent in an oblique direction with respect to the axial line 1a.

The distal bag 112 is bent at one end from the distal end of the proximal bag 111. In this embodiment, the distal bag 112 is disposed at a position deviated from the axis 1a of the handpiece along a direction crossing the axis of the handpiece And extend in diagonal directions.

The tool heads 120, 130, 140 and 150 are integrally provided at the distal ends of the distal sacks 112 and the distal sacks 112 are positioned relative to the proximal sacks 111 relative to the handles, Section.

The ultrasonic tools 100A, 100B, 100C and 100D have at least one water outlet 161 and 162 for spraying cooling water for cooling the treatment site. The outflow holes 161 and 162 are provided in the front of the tool head 120 and at least one of the tool sacks and in particular the distal sacks 112 to define the first plane P1 And the cooling water is sprayed toward the cooling water. Although not shown, a flow path for guiding the cooling water is formed in the ultrasonic wave tool through the water outlet so that the cooling water supplied from the handpiece is guided to the water outlet.

As described above, the ultrasonic tool and the ultrasonic tool set including the ultrasonic tool according to the present invention are an ultrasonic tool for dental orthodontic treatment, in particular, cortical bone resection for shortening the calibration period, more specifically, It can be more effectively applied to the procedure of entering the tunnel formed between the cortical bone and the cortical bone and damaging the cortical bone.

Hereinafter, referring to FIGS. 10 to 12, a tunneling operation is performed to form a tunnel below the oral soft tissue in a region covering a site requiring cortical resection for shortening the calibration period, and a tunneling operation An example of a procedure is described.

10 to 12, the practitioner forms a scalpel incision C on the oral tissue (gum), for example, the lingual side of the right molar, in a region covering a site where damage to the cortical bone is required.

Then, the operator inserts the tip of the dental culet 200, that is, the blade head 210, under the oral soft tissues S through the incision part C, and the edge (blade) of the blade head When the curette grip 220 is operated so that the oral soft tissue S is peeled off, the oral soft tissue S and the alveolar bone B, particularly the cortical bone, are separated from each other to form a tunnel in the moving direction of the blade head 210.

More specifically, a space for entering the ultrasonic tool, that is, a tunnel is formed between the oral soft tissue S and the alveolar bone B by the dental cullet 200, The periosteum covering the cortical bone of the bone (B) is separated (peeled) from the surface of the cortical bone together with the oral soft tissue (S).

When the tunneling operation is completed, the dental culet 200 moves the ultrasonic tool 100A into the tunnel formed below the oral soft tissue S and moves in the tunneling direction (direction in which the tunnel is formed) , The tooth movement is promoted and the correction period can be shortened because the alveolar bone at the damaged area is softened by the localized healing promotion phenomenon.

13 is a view showing another example of a tool head of the ultrasonic tool according to the present invention. As far as the direction of the tool head is directed to the direction described in the present invention with reference to the handpiece, Fig. 13 shows an example in which the tool blade is formed in a direction perpendicular to the width direction of the tool head.

As described above, according to the present invention, the present invention can be embodied in other specific forms without departing from the spirit and scope of the present invention. It is obvious to them.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100A, 100B, 100C, 100D: Ultrasonic tools
1: Handpiece 110: Tool sack
111: proximal bag 112: distal bag
120, 130, 140, 150: Tool head

Claims (10)

A tool shank provided on a handpiece constituting a handle and located on the same plane as the handpiece; And
And a tool head provided at a distal end of the tool bag and damaging the cortical bone by applying ultrasonic stimulation to the cortical bone, the dental ultrasonic tool for orthodontic treatment comprising:
The tool bag includes a proximal bag detachably connected to the handpiece and extending along an axis of the handpiece or having a shape bent in an oblique direction with respect to an axis of the handpiece so as to be out of the axis of the handpiece, A distal bag positioned away from the handpiece relative to a relatively proximal bag having a shape curved to one side from the distal end of the proximal bag,
The tool head is integrally provided at the distal end of the distal end of the tool, and is positioned to be coplanar with the handpiece and tool bag,
A first plane orthogonal to a direction in which the tool head is oriented and an imaginary second plane in which the handpiece and the tool bag are located are formed at an acute angle so that the handpiece extends in an oblique direction with respect to a treatment site of the ultrasonic tool And,
Wherein the tool head is provided with a tool blade protruding forwardly of the tool head so as to face a first plane perpendicular to a direction in which the tool head is oriented,
Wherein an outlet hole capable of ejecting cooling water toward the first plane is provided in at least one of a front surface of the tool head and the distal sack. delete The method according to claim 1,
Wherein the handpiece is at an acute angle to the right side of the first plane with respect to a state in which the tool head faces the right side of the first plane. The method according to claim 1,
Wherein the handpiece is at an acute angle to the left side of the first plane with respect to a state in which the tool head faces the right side of the first plane. The method according to claim 1,
Wherein the handpiece is at an acute angle to the right side of the first plane with respect to a state in which the tool head faces the left side of the first plane. The method according to claim 1,
Wherein the handpiece is at an acute angle to the left side of the first plane with respect to a state in which the tool head faces the left side of the first plane. 7. The method according to any one of claims 1 to 6,
Wherein the first plane and the second plane are in the range of 20 DEG to 70 DEG. delete A dental ultrasonic tool set for orthodontic treatment comprising a first ultrasonic tool and a second ultrasonic tool, the dental ultrasonic tool set comprising:
Wherein the first ultrasonic tool and the second ultrasonic tool each include a tool bag provided at the tip of the handpiece and positioned on the same plane as the handpiece and a tool holder provided at the tip of the tool bag for applying ultrasonic vibration to the cortical bone, And a tool head that damages the tool.
The tool bag includes a proximal bag detachably connected to the handpiece and extending along an axis of the handpiece or having a shape bent in an oblique direction with respect to an axis of the handpiece so as to be out of the axis of the handpiece, A distal bag positioned away from the handpiece relative to a relatively proximal bag having a shape curved to one side from the distal end of the proximal bag,
The tool head is integrally provided at the distal end of the distal end of the tool, and is positioned to be coplanar with the handpiece and the tool bag,
Wherein a plane orthogonal to a direction in which the tool head of the first ultrasonic tool is oriented and a plane in which the handpiece of the first ultrasonic tool and a tool bag are located form an acute angle; A plane orthogonal to the direction in which the tool head of the second ultrasonic tool is oriented and a plane on which the handpiece of the second ultrasonic tool and the tool bag are located form an acute angle; The tool head of the first ultrasonic tool and the tool head of the second ultrasonic tool face in different directions,
Wherein each tool head of the first ultrasonic tool and the second ultrasonic tool is provided with tool teeth protruded forward from the tool head so as to face a plane perpendicular to a direction in which the tool heads face,
Wherein at least one of a front surface of each of the tool heads of the first ultrasonic tool and the second ultrasonic tool and the distal bag has a plane perpendicular to a direction in which the tool head of the first ultrasonic tool faces, And a water outlet hole capable of spraying cooling water on a plane orthogonal to the direction in which the cooling water flows. delete

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