KR102155022B1 - Drilling aiding medical device - Google Patents

Abstract

It relates to medical devices that aid in drilling. More specifically, including a grip held by the operator, a head having a tunnel through which the drill can pass, and a neck that couples the grip and the head, the drill blade is not inserted more than a certain depth to adjust the depth of drilling. To prevent drilling stopper.

Description

Drilling aid medical device {DRILLING AIDING MEDICAL DEVICE}

It relates to a medical device and more specifically to a medical device guiding a medical drill.

Forehead reduction surgery is a surgery to reduce the length of the forehead by making a fine incision in the hairline and pulling and fixing the upper scalp. In order to fix the pulled scalp, a hole is made in the skull at the pulled position and a thread is threaded through the hole to sew it with the scalp.

A drill is used to make a hole in the skull. However, in the case of making a hole, the depth of the hole is adjusted so that the drill penetrates the skull and does not make a hole, and this may be affected by individual medical personnel's skill proficiency.

Previously, a drill including a scaffold was introduced to solve this problem.

US Publication No. US 2002/0143356 (published date: October 03, 2002) Japanese Patent Publication No. JP 4598199 (Publication date: November 26, 2009)

According to one side, the operator grips the grip; A head having a tunnel through which a drill can pass; And a neck coupling the grip and the head.

According to an embodiment, at least one first hole of both holes of the tunnel of the head may have an angle in a predetermined range in a longitudinal direction in which the inclined surface of the first hole and the wall of the tunnel are elongated. have.

In this case, the angle in the predetermined range may be 40 degrees or more and 47 degrees or less. More specifically, the error may be less than or equal to 3 degrees from the angle in the predetermined range of 45 degrees. However, it is also possible to change the angle as necessary within the scope not departing from the spirit of the invention, and should not be interpreted as being limited to the above numerical values.

According to an embodiment, a drilling stopper having an error of 4 degrees or less in a first length direction in which the wall of the tunnel is elongated and a second length direction in which the neck is extended is 90 degrees is provided. In some cases, a drilling stopper in which a first longitudinal direction in which the wall of the tunnel is elongated and a second longitudinal direction in which the neck is extended is 25 degrees to 60 degrees or less is also possible.

According to an embodiment, the neck is connected to the grip on one side and connected to the head on the other side, and the length at which the neck extends between the one side and the other side is a first length or more and a second length or less. Is presented.

Illustratively, but not limited to, the first length may be 2 millimeters, and the second length may be 30 millimeters.

Meanwhile, according to an exemplary embodiment, the grip may include at least one recessed groove on one or both sides.

According to another embodiment, the second hole of the other of the two holes of the tunnel of the head includes a drilling stopper having an angle in a predetermined range in which the inclined surface of the second hole and the length direction in which the wall of the tunnel extends are Is presented.

According to the other side, a drilling stopper having a tunnel head portion at both ends of the grip is provided. Drilling stopper according to an embodiment, the operator grips the grip; A first head coupled by a first neck at a first end of the grip and having a first tunnel through which a drill can pass; And a second head coupled by a second neck at the second end of the grip and having a second tunnel through which the drill can pass.

According to an embodiment, the first end and the second end may be ends in opposite directions with the grip interposed therebetween.

According to another embodiment, at least one first hole among both holes of the first tunnel of the first head has an inclined surface of the first hole and a longitudinal direction in which the wall of the first tunnel is elongated. It has a predetermined range of angles.

Similarly, at least one of the third holes of both holes of the second tunnel of the second head, the inclined surface of the third hole and the length direction in which the wall of the second tunnel extends have an angle within a predetermined range. It is also possible to have a drilling stopper.

According to another embodiment, the first hole and the third hole may be a drilling stopper disposed in the same direction with respect to a line extending from the first and second necks.

In addition, the material of the drilling stoppers may include stainless steel.

In FIG. 1, a location and shape in which a drill drills a hole in a bone through a drilling guide according to an embodiment are presented.
2 shows a state in which a drill is passed through a drilling stopper according to an embodiment.
3 shows a basic form of a drilling stopper according to an embodiment.
4 shows a drilling stopper in which one hole of the tunnel has a slope according to an embodiment.
5 shows a drilling stopper in which both holes of the tunnel have an inclination according to an embodiment.
6 shows a drilling stopper connected to have a predetermined angle between the head and the neck according to an embodiment.
7 illustrates a drilling stopper having an elongated neck according to another embodiment.
8 shows a drilling stopper including a groove in the grip according to an embodiment.
9 shows a drilling stopper including another groove in the grip according to an embodiment.
10 shows a drilling stopper with heads on either side of the grip according to one embodiment.
11 is a drilling stopper including various modifications according to embodiments.
12 shows a state in which a hole is made in a bone using a drilling stopper according to an embodiment.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. The same reference numerals in each drawing indicate the same members.

Surgery with a drill

In various surgeries, a hole is made in the bone. For example, in the case of plastic surgery to reduce the length of the forehead (the area between the brow and the edge of the hair), a hole is made in the bone, and the pulled skin is fixed by threading the hole in the bone. In this case, a hole must be made in the skull, but if the hole is made too deep to penetrate the skull, side effects such as bleeding and infection may occur, and in severe cases, an emergency situation that may result in death of the patient occurs. Therefore, drilling should be performed at a depth that does not penetrate the skull. Throughout this specification, plastic surgery is described as an example, but it should not be interpreted as a tool that can be used only for specific surgery, and it is obvious that it can also be used for orthopedic surgery, for example.

1A is a view showing a hole in a bone using a drill according to an embodiment. A hole is made in both directions using a drill 170 in the skull 100. A hole is made in the skull 100 in a diagonal direction, and the right hole 121 and the left hole 122 are connected to form a thread through which a thread can be attached.

1B is a cross-sectional view of the skull, in which the right and left holes 121 and 122 are indicated by the blade length dotted line. The right hole 121 and the left hole 122 are connected to each other by penetrating the inside of the skull from the outside of the skull in the left and right diagonal direction to create a V-shaped tunnel.

When drilling is performed on the skull, the thickness of the skull of a general person varies slightly from part to part, but is about 6mm. Therefore, if you drill a little deeper during the drilling operation, the skull may penetrate. To reduce this risk, the proposed drilling stopper can be used.

Use of drilling stoppers

The drilling stopper according to the embodiment may be used to make a hole only to a safe depth so as not to penetrate the bone. The drilling stopper serves to physically block the drill so that the drill bit cannot be passed through the drill to enter more than a certain depth, and also serves to guide the drilling direction. For reference, although expressed as a "drilling stopper" throughout this specification, anyone can understand that not only a stopper function for setting a limit of a drilling depth, but also a guidance function for guiding a drilling direction. Therefore, it should be clarified that the drilling stopper is also a guide for guiding the drilling bit, even if not described repeatedly below.

This can be well understood by looking at FIG. 2. 2 is a view showing a state in which a drill blade passes through a drilling stopper according to an embodiment. The illustrated drilling stopper may be composed of a head 210, a neck 220 and a grip 230. The head 210 of the drilling stopper may set a limit so that the depth does not increase beyond a predetermined amount when the bit of the drill 270 penetrates the bone and makes a hole, but the drilling direction is the elongated tunnel of the head 210 ) It is also guided in the direction.

Since the drilling depth is adjusted according to the length of the head 210, if the length of the head 210 is provided at a level necessary for each operation, even an unskilled person can drill a hole of a predetermined depth without any difficulty. Thus, at present, only an operator (for example, a medical person) having a skilled skill can accurately make the V-shaped tunnel of FIG. 1B, but the operation of an unskilled person becomes much safer by using the drilling stopper according to the embodiment. An embodiment of the detailed structure of the drilling stopper will be described in more detail with reference to FIG. 3.

Basic structure of drilling stopper

3 shows a basic form of a drilling stopper according to an embodiment. Drilling stopper according to an embodiment may be composed of a head 310, neck 320 and grip 330.

The head 310 has a tunnel through which a drill can pass. Specifically, the head 310 has a cylindrical shape in which both circular holes are opened, and is hereinafter referred to as a tunnel. However, it is not limited to a cylinder, and other shapes are possible depending on the shape and thickness of the drill and the operator's needs.

The length of the tunnel constituting the head 310 is related to the length of the drill bit. For example, if the drill bit is long, the length of the tunnel may be increased, and if the drill bit is short, the length of the tunnel may be shortened.

For example, in the case where the depth of the hole is to be dug into 3mm, the length of the tunnel may be about 4mm if the length of the drill is 7mm. However, this is an exemplary numerical value and is not limited thereto, and various embodiments are possible.

As will be described in more detail later, at least one of both holes of the head 310 may have an inclined surface that allows the operator to clearly see the part where the drill bit penetrates the bone, and facilitates suction. These inclined surfaces may be in only one hole of the head 310 or may be in both holes. More detailed and various examples will be described later with reference to FIG. 4.

Meanwhile, the neck 320 refers to a portion that couples the head 310 and the grip 330. Although named separately from the grip 330 or the head 310, it may be a single structure physically connected. The neck 320 is connected to one side of the grip 310 and may be configured in various ways such as length, extension direction, and structure. For functional reasons, not design considerations, the neck 320 may have various modified embodiments, which will be described later with reference to FIG. 6.

The grip 330 is a part held by the operator. As mentioned above, the operator means the user of the drilling stopper, and is, for example, a medical person in the medical law, but is not limited to users of a specific occupational group in terms of technology.

The grip 330 is connected to the neck to allow the operator to hold and adjust the direction and position when operating the drilling stopper. This grip 330 will be described in detail with reference to FIG. 8.

Various embodiments of the head

4 shows a drilling stopper having an inclined hole in one of the tunnels according to an embodiment. This is an embodiment in which a view is secured by having a slope in one hole of a tunnel in the basic drilling stopper.

Specifically, the head 410 has an inclination while one hole of the tunnel is formed obliquely as shown in FIG. 4, so that the operator can easily access the contact part (drilling entrance) where the drill passing through the tunnel enters the bone. It has the effect of creating a view so that you can check it. In addition, as mentioned above, since there is such a wide area, it can be advantageous for suction, and it is easy to set the angle to enter the V-shape. Compared to the head 310 illustrated in FIG. 3, the fact that the head 410 illustrated in FIG. 4 is advantageous in securing a field of view, adjusting an angle, suction, etc. in actual use can be sufficiently understood from this description, so a more detailed description is omitted .

The head 410 is an example in which only one hole (first hole) is an inclined surface, but both sides may be inclined as shown in FIG. 5 to be described later.

First, an example in which one is an inclined surface will be described, and an angle 440 formed between the inclined surface direction 430 of the first hole and the longitudinal direction 420 in which the wall of the tunnel is elongated may be an angle within a predetermined range. . The longitudinal direction 420 in which the wall of the tunnel extends refers to a virtual linear direction connecting the center of one hole (first hole) and the other hole (second hole) of the tunnel. It is also the principal direction of the tunnel. In addition, the longitudinal direction 420 in which the wall of the tunnel extends may be a direction perpendicular to the longitudinal direction of the grip, but is not necessarily the case.

For example, but not limited to, the angle in the predetermined range may be 40 degrees or more and 47 degrees or less. Alternatively, the error may be less than 3 degrees at 45 degrees. Since the angle is a value that is set so that the operator can easily drill by securing a view through the short side of the tunnel wall, a different angle may have to be set as needed and depending on the application field. .

In addition, a drilling stopper having an inclined surface on both sides of the head 510 is shown in FIG. 5. Looking at the tunnel of the head 510, both the first hole 511 and the second hole 512 are configured to have an inclination.

As described with respect to the first hole in FIG. 4, in the embodiment of FIG. 5, the inclined surface direction of each hole 511 and 512 may be configured such that the lengthwise direction in which the wall of the tunnel extends has an angle within a predetermined range. have. The inclined surface of the first hole 511 and the inclined surface of the second hole 512 may be symmetrical to each other, but are not necessarily the case.

In addition, the position where the wall of the tunnel is shortened by the slope is the same, so it can form a trapezoidal shape when viewed from the side. In the case of forming a trapezoidal shape, it can be used as a two-way head that can be used no matter which direction the drill bit comes in. Looking at a more detailed example, in FIG. 1A, in order to dig the right hole 121, the operator performs drilling from the second hole 512 to the first hole 511, and in order to dig the left hole 122 Drilling may be performed from the first hole 511 to the second hole 512. There is an effect of changing the type of drilling stopper or assisting drilling in both directions without turning the stopper over.

Examples for the neck

6 shows a drilling stopper connected to have a predetermined angle between the head and the neck according to an embodiment. Since the neck has a predetermined angle with the head 610, the direction of the grip held by the operator during drilling can be changed. In the previous example, the grip must be held at an angle perpendicular to the direction in which the drill bit will enter (which is also the direction of the tunnel), but if the angle of this neck is bent or bent (or the joint surface of the neck and the head is oblique, the same effect is achieved) It can be done, but this will not be explained separately) It can be more comfortable because it can be held at an angle without holding the grip in a right angle direction.

Specifically, the longitudinal direction 650 in which the neck extends and the longitudinal direction 620 in which the wall of the head tunnel extends are substantially close to the vertical, but may be connected to have a predetermined angle 660. The constant angle 660 may be, for example, 30 degrees or more and 90 degrees or less. If the angle is less than 30 degrees, it may hinder the movement of the drill, and it may be determined as an angle between 30 degrees and 90 degrees so that the user's wrist can use comfortably. If the exemplary embodiment presented here is seen, a person skilled in the art will be able to make other modifications, and it should be seen that such modifications are also presented within the scope of the inventive concept.

However, according to another embodiment, there may be a drilling stopper in which the neck is longer than the usual length, and this example is shown in FIG. 7. If the neck of the drilling stopper is short, the field of view may be obscured by the hair during skull surgery, or the operation may be inconvenient due to any interference. Therefore, we present an example of a long-necked drilling stopper that has the effect of enhancing visibility and operability without being disturbed by hair. Of course, the degree of a long or short neck can be adjusted in various ways depending on the type of surgery and the patient's condition, and should not be limited to a neck of a specific length. Also, although it is not necessarily presented as a picture, it is also possible to apply the neck length to be variable. In such an example, the operator or assistant will manipulate it to increase or decrease the neck.

In FIG. 7, the head 710 has a shape in which one hole of the tunnel has an inclined surface, and a neck 720 is connected to the wall side of the head and a grip 730 is attached. The neck 720 is formed to be longer than the neck in FIGS. 3 to 6. When the neck is short, it may be difficult to insert the head of the drilling stopper to a deep point during surgery by being caught by the grip 730. Also, as described above, your vision can be obstructed by your hair. However, when the neck 720 is long, there is no difficulty in inserting the head of the drilling stopper to a deep point during surgery, and there is an effect of reducing obstruction of vision caused by hair.

Illustratively, but not limited to, the length of the neck may be 2mm or more and 30mm or less. When the length of the neck is short (about 2 to 5 mm), since the distance between the grip and the head is close, it is easy for the operator to control the drilling stopper. Therefore, it is easy to adjust the minute position or angle of the drilling stopper. On the other hand, when the length of the neck is long (about 5 to 30 mm), fine adjustment is difficult, but interference of the field of view caused by the hair can be reduced, and drilling is possible by inserting it into a deep position.

Examples for grip

8 illustrates a drilling stopper including a groove in a grip according to an embodiment. The grip 830 includes at least one groove 831 to prevent slipping when the operator grips.

During surgery, blood splatter or foreign objects can make the grip slippery. The force is transmitted to a drill to drill a hole by applying force and a stopper that physically blocks the drill blade to adjust the drilling depth. If the grip is slippery at this time, the grip may be missed or the stopper may move from the hand. Therefore, in order to prevent such a problem, the grip 830 may further include at least one groove 831 for stably holding the grip despite foreign substances or the like. The shape or number of the grooves 831 may be arranged in a simple form without being too complicated for disinfection of surgical instruments. In FIG. 8, three grooves 831 are shown in a form in which a wrinkle is formed. The grooves 831 may exist on both sides of the grip. Although shown only in the front portion, the rear portion may also include a groove 831.

9 shows a drilling stopper in which another groove is included in the grip according to an embodiment. The shape of the groove shown in FIG. 8 is a shape in which three grooves form a corrugated shape, but this is only exemplary, and FIG. 9 shows a grip including a circular groove 931. There is an effect of stably gripping the grip 930 so that the grip does not shake when gripping by using the groove 931 that is dent in a circle.

Head and neck connection direction

Meanwhile, in the embodiment shown in FIG. 9, the direction of connection between the head and the neck is also different from the above-described embodiments. Specifically, compared with FIG. 8, in FIG. 9, a neck is connected to a long portion of a portion having a short tunnel length and a long portion of the head. The direction of the slope is different from the previous examples. In FIG. 8, the neck is connected at an intermediate point between the short and long tunnel lengths of the head. In simple terms, in FIGS. 4 to 8, the neck is connected to the side of the head, and in FIG. 9, the neck is connected to the lower surface of the head.

In addition to the groove of the grip, in the direction in which the head and the neck are connected, FIGS. 8 and 9 are different, and various embodiments are possible according to the convenience of the operator. For example, when the drill is held in the right hand and the drilling stopper is held in the left hand, the operation can be performed while the grip is held parallel to the chest surface of the operator. At this time, the head and the neck of FIG. 8 are connected so that the inclined surface of the head for securing the field of view is positioned in the front downward direction of the operator.

On the contrary, in FIG. 9, when the grip of the drilling stopper is held perpendicular to the chest surface of the operator and the operation is performed, the inclined surface of the head hole may be positioned in a direction below the front of the operator.

Drilling stopper with double head

10 shows a drilling stopper with heads on both sides of the grip according to one embodiment. The drilling stopper may include a first head 1010 and a second head 1011. A first head (1010) having a first tunnel through which a drill can pass and is joined by a first neck at the first end of the grip, and a second neck at the second end of the grip, and the drill is It may be configured to have a second head 1011 having a second tunnel through which it can pass.

There may be several advantages of such a double-headed stopper, but one thing that can be explained first is that drilling in two directions is possible without changing the mechanism as long as the operator turns the grip and grabs it. Referring to the example of FIG. 10, from the standpoint of an operator (usually right-handed) who holds the drill with his right hand and holds the stopper with his left hand, when drilling in a direction away from himself, insert the drill into the first head 1010, and When drilling in a direction closer to the side, the drill may be introduced through the second head 1011 after holding the grip in the opposite direction by rotating the grip. In other words, the head 1010 is used to make a hole in the direction that goes obliquely forward, and the head 1011 is used to make a hole in the direction that digs obliquely in the direction of the operator himself from the (patient side) direction away from the operator. You can use it.

Of course, various embodiments of variously changing the presence/absence of an inclined surface, direction, etc. even within one head are possible. For example, as shown, the first head 1010 may be formed such that the first hole has an inclined surface, and the second hole of the first head 1010 does not have an inclined surface. However, if necessary, both sides of the first head 1010 may have inclined surfaces.

Like the first head 1010, the second head 1011 may be formed such that the third hole has an inclined surface and the fourth hole may not have an inclined surface, but other examples are possible.

The inclined directions of the first hole and the third hole having an inclined surface may be the same. Since the first hole and the third hole have the same inclination direction, it is easy to secure a view using the first head 1010 when the operator performs drilling in the forward and downward direction based on his or her chest. . In addition, in the case of using the second head 1011 by rotating the grip 180 degrees, it is easy to secure a view when drilling is performed backwards and downwards based on the operator's chest.

Drilling stopper with modified double head

11 is a drilling stopper including various modifications according to an embodiment. A drilling stopper including various embodiments described above is shown.

The drilling stopper may include two heads 1110 and 1111, and may include two necks 1120 and 1121. In addition, two regions of grooves 1130 and 1131 may be included in one grip. Each configuration will be described in detail one by one.

The first head 1110 is connected to the first neck 1120 and is configured such that both holes of the tunnel have an inclined surface. The inclined surface may be formed such that a direction of the inclined surface and a length direction in which the wall of the tunnel extends have an angle within a predetermined range. Both the first hole and the second hole have an inclined surface, so that it is easy to secure a view even if the drill is inserted into any hole.

Conversely, the second head 1111 is connected to the second neck 1121, and only one hole (the third hole) of the tunnel is configured to have an inclined surface. The fourth hole is formed substantially perpendicular to the longitudinal direction in which the wall of the tunnel extends, so that the drill blade can be stably stopped.

The first hole and the third hole may be disposed in the same direction based on a line extending from the first and second necks. That is, the first hole and the third hole may be disposed on either the left or the right side of the neck.

The first neck 1120 may have a short length, and the second neck 1121 may have a long length. Since the first neck 1120 has a short length, the operator can operate it with a sense of stability when using the drilling stopper using the first head 1110, and the second neck 1121 is long so that the second head (1111) can be used to reduce the influence of hair, etc. when using the drilling stopper.

In the case of the grip, a first groove 1130 having a corrugated shape may be included in the first head 1110 side, and a circular second groove 1131 may be included in the second head 1111 side. Using the first and second grooves 1130 and 1131, the operator can hold the grip so as not to slip and use a drilling stopper.

Material of drilling stopper

The material of the drilling stopper described so far may include stainless steel. Although stainless steel is illustrated, it is not limited thereto, and other metals or reinforced plastics may be used in some cases. In addition, the whole is not made of one material, but it is possible to change the material for each part.

Drilling with a drilling stopper

12 shows a state in which a hole is made in a bone using a drilling stopper according to an embodiment. In FIG. 12, a bone 1200 for drilling a hole, a drilling stopper 1230, a drill 1240, and a hole 1210 created by the drill are shown.

The operator may perform drilling while holding the drilling stopper 1230 and the drill 1240, each with one hand. The operator may bring the drilling stopper 1230 closer to the bone 1200 and may contact the bone 1200 in some cases. The long end of the inclined surface is in contact with the bone 1200, and the blade of the drill 1240 is passed through the hole of the drilling stopper 1230. The drilling stopper is caught on the body of the drill and the blade enters the bone only by a predetermined depth. As a result, a hole 1210 having a predetermined depth that does not penetrate through the bone 1200 is formed.

Conventionally, since drilling is performed using the operator's sense, the depth of the hole may vary depending on the operator, and it is unstable because it depends on the operator's hand technique. On the other hand, when a hole is made in the bone 1200 using the drilling stopper 1230 according to an embodiment, it is possible to safely make a hole only by a predetermined depth.

In addition, the apparatus according to an embodiment of the present invention can be used for various purposes. The apparatus may have other uses in addition to the uses illustrated and described according to an embodiment.

As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations from these descriptions for those of ordinary skill in the field to which the present invention pertains. This is possible.

Therefore, the scope of the present invention is limited to the described embodiments and should not be defined, but should be defined by the claims to be described later as well as equivalents to the claims.

Drill: 170, 270, 1240
Drilling stopper: 1230
Head: 210, 310, 410, 510, 610, 710, 1010, 1011, 1110, 1111
Neck: 220, 320, 720, 1120, 1121
Grip: 230, 330, 730, 830, 930,

Claims (16)

Operator grips;
A head having a tunnel through which a drill can pass; And
Neck that connects the grip and the head
Including,
In the head, at least one first hole of both holes of the tunnel has an inclined surface that inclines downward toward a direction away from the center of the tunnel,
The neck is connected to the lower or side of the head,
Drilling stopper.
The method of claim 1,
A drilling stopper in which an inclined surface of the first hole and a longitudinal direction in which the wall of the tunnel is elongated form an angle within a predetermined range.
The method of claim 2,
The drilling stopper having an angle of 40 degrees or more and 47 degrees or less in the predetermined range.
The method of claim 2,
Drilling stopper with an error of less than 3 degrees at the angle of the predetermined range of 45 degrees.
The method of claim 1,
A drilling stopper having an error of 4 degrees or less at 90 degrees in a first longitudinal direction in which a wall of the tunnel is elongated and a second longitudinal direction in which the neck is extended.
The method of claim 1,
A drilling stopper in which a first longitudinal direction in which the wall of the tunnel is elongated and a second longitudinal direction in which the neck is extended are 25 degrees to 60 degrees or less.
The method of claim 1,
The grip is a drilling stopper including at least one recessed groove on one or both sides.
The method of claim 1,
The neck is connected to the grip on one side and the head on the other side, and the length of the neck extending between the one side and the other side is greater than or equal to a first length and less than or equal to a second length.
The method of claim 8,
The first length is 2 millimeters, and the second length is 30 millimeters.
The method of claim 2,
The second hole of the other of the two holes of the tunnel of the head, the inclined surface of the second hole and the length direction in which the wall of the tunnel extends have an angle in a predetermined range.
Operator grips;
A first head coupled by a first neck at a first end of the grip and having a first tunnel through which a drill can pass; And
A second head coupled by a second neck at the second end of the grip and having a second tunnel through which the drill can pass
Including,
In the first head, at least one first hole of both holes of the first tunnel has an inclined surface that inclines downward toward a direction away from the center of the first tunnel,
The first neck is connected to the lower or side of the first head,
Drilling stopper.
The method of claim 11,
The first end and the second end are ends in opposite directions with the grip interposed therebetween.
The method of claim 11,
A drilling stopper in which an inclined surface of the first hole and a longitudinal direction in which the wall of the first tunnel is elongated form an angle within a predetermined range.
The method of claim 13,
A drilling stopper in which at least one third hole of at least one of the holes of the second tunnel of the second head has an angle in a predetermined range between the inclined surface of the third hole and a length direction in which the wall of the second tunnel extends.
The method of claim 14,
The first hole and the third hole are disposed in the same direction based on a line extending the first and second necks.
The method of claim 14,
The material of the drilling stopper is a drilling stopper comprising stainless steel.

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