KR20230117927A - Implant placement position guide tool - Google Patents

Abstract

According to one embodiment of the present invention, provided is an implant placement position guide tool, which comprises: an upper body formed in a cylindrical shape; a disc-shaped locking protrusion formed at one end of the upper body; a lower body formed on the opposite side of the upper body and having a cylindrical shape with respect to the locking protrusion; and a drill unit consisting of a twist drill extending from the end on which the locking protrusion is not formed among both ends of the lower body, and a triangular point drill formed at the end of the twist drill and formed in the shape of a triangular pyramid.

Description

Implant placement position guide tool {IMPLANT PLACEMENT POSITION GUIDE TOOL}

The present invention relates to a device for guiding an implant placement position, and more particularly, to a device for improving the accuracy of position selection for implant placement and for controlling the placement depth.

Implant surgery is performed to replace a missing tooth or group of missing teeth with an implant or several implants. The goal of implant surgery is to restore the patient's oral aesthetics and secure normal masticatory and language functions.

Implant surgery is usually performed under local anesthesia. The procedure generally involves fitting an artificial tooth into an implant that is integral with the patient's jawbone. The implant is generally in the form of a post with an external thread that engages directly into a pre-drilled hole in the jawbone. Drilling the jawbone is a tricky procedure that requires a certain skill on the part of the dentist. This procedure usually involves making an incision in the gingiva consistent with the implant site defined by (natural or artificial) border teeth. Once these incisions are made, the surgeon separates the resulting gingival flap and makes a small diameter (usually approximately 2 mm) preliminary hole directly into the jawbone using a drill bit mounted on a motorized rotary instrument. It is also possible to operate without a flap by drilling directly through the gingiva.

Once the pilot hole is made, the surgeon enlarges the pilot hole using drill bits of increased size until obtaining a bore with a nominal diameter that allows placement of the implant.

Since the position and orientation of the preliminary hole respectively dictate the position and orientation of the implant and, therefore, the position and orientation of the artificial tooth, it is essential that the preliminary hole is made accurately.

Realistically, the drill bit for forming the preliminary hole is mounted with a contra angle that is itself coupled to the motor. If the preliminary hole is drilled by hand alone, it will be understood that the success of such surgery depends on the precision by the surgeon. In particular, the surgeon must pay attention to the mesiodistal and buccolingual positioning of the tool and the orientation of the drill bit's axis.

However, it is not impossible that the surgeon may make clumsy movements or the patient may experience cramps, both of which may affect accurate drilling of the preliminary hole.

In order to avoid accidents of this kind, a solution for guiding the drilling operation has been proposed.

The first technique involves surgery using a thermoformed aligner in which a counter-impression of the patient's oral cavity is formed, the aligner having one or more perforations that coincide with one or more implant sites. . However, an aligner of this kind, commonly referred to as a surgical guide, requires preliminary steps involving forming an imprint, forming a mold, and then creating the aligner. This step is difficult and expensive, which explains why most doctors avoid it and prefer to work only with their hands, despite the risks described above.

The second technique involves surgery allowing mesiodistal guidance of the drill bit using a guide rigidly connected or attached to the drill bit, the guide being placed between two existing teeth defining the implant site or the It is positioned against one tooth defining a complete gap at the end.

Such a guide described in international application WO2012/165093 is in the form of a cylinder having a large outer diameter compared to the outer diameter of the drill bit on which the guide is mounted.

While such a guide appears at first glance to be an advance in relation to conventional hand-only drilling techniques, it is not without its drawbacks.

In fact, even if the mesial distal positioning of the drill bit is easily performed by the guide, the same cannot be said for buccal-lingual positioning. This is because the presence of the guide at least partially conceals the implant site from the operator. At least, the guide casts a shadow on the implant site by being positioned between the guide and the light (in most cases this provides a contra angle), which makes it difficult to accurately evaluate the buccal lingual positioning of the drill bit.

Therefore, there is a need for a guide mechanism capable of accurately selecting a position for implant placement and drilling to an appropriate depth.

The present invention is to solve the problems of the prior art described above.

An object of the present invention is to provide an implant placement position guiding mechanism capable of accurately confirming an implant placement position and safely adjusting the depth of a drill entering the gum during implant placement.

The objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood from the description below.

According to one embodiment of the present invention for achieving the above object, the upper body formed in a cylindrical shape; a disc-shaped locking jaw formed at one end of the upper body; In the locking jaw, a lower body formed on a surface opposite to the upper body and formed in a cylindrical shape; and a drill portion including a twist drill extending from an end of the lower body at which the locking jaw is not formed, and a triangular point drill formed at an end of the twist drill and formed in a triangular pyramid shape among both ends of the lower body, wherein the implant placement position is included. A guide mechanism is provided.

The implant placement position guide mechanism may further include a stopper inserted from the tip of the triangular point drill and having O-rings each coupled to two concave portions formed at different positions on an inner surface.

The implant placement position guide mechanism may further include extensions inserted from the tip of the triangular point drill and having O-rings each coupled to two concave portions formed at different positions on an inner surface.

The lower body may have an O-ring locking jaw for engaging with the O-ring of the stopper or the O-ring of the extension as the stopper and the extension move in the longitudinal direction of the drill.

An extension may be first inserted into the drill, and then a stopper may be inserted.

According to the implant placement position guide device according to the embodiment of the present invention, the implant placement position can be accurately confirmed, and the depth of the drill entering the gum can be safely adjusted when the implant is placed.

1 is a view showing the shape of an implant placement position guide mechanism according to an embodiment of the present invention.
2 is a view showing a structure in which a stopper according to an embodiment of the present invention is inserted into a drill and two O-rings are respectively coupled to an O-ring coupling part.
3 is a view showing a structure in which an extension according to an embodiment of the present invention is inserted into a drill and two O-rings are respectively coupled to an O-ring coupling part.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention which follows refers to the accompanying drawings which illustrate, by way of illustration, specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable one skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other but are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in one embodiment in another embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description set forth below is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all equivalents as claimed by those claims. Like reference numbers in the drawings indicate the same or similar function throughout the various aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention.

1 is a view showing the shape of an implant placement position guide mechanism according to an embodiment of the present invention.

Referring to FIG. 1 , a device for guiding an implant placement position according to an embodiment may include a drill 100, a stopper 200, and an extension 300.

Referring to the structure along the axial direction of the drill 100, the head portion 110 is formed at one end, and the head portion 110 is connected to the upper body 130 through the bridge 120.

The head portion 110 and the upper body 130 may have substantially the same outer diameter, and the bridge 120 may have a smaller outer diameter than the head portion 110 and the upper body 130 .

The upper body 130 may be formed in a cylindrical or columnar shape, the head portion 110 is formed at one end, and the locking jaw 140 is formed at the other end.

The locking jaw 140 is formed in a disk shape, and one surface may be connected to the upper body 130 in a tapered shape in which a cross-sectional area gradually decreases.

The other surface of the locking jaw 140 is connected to the lower body 150 .

The lower body 150 is formed in a cylindrical or cylindrical shape, and may have a larger outer diameter than the upper body 130 . An O-ring coupling part 160 may be formed on the lower body 150 . The O-ring coupling portion 160 is formed on at least a portion of the lower body 150 and is a portion that is coupled to the stopper 200 and the O-ring of the extension 300 to be described below. For coupling with the O-ring, the outer diameter of the O-ring coupling part 160 is smaller than the outer diameter of the lower body 150. In other words, a concave portion is formed in at least a portion of the lower body 150 along an outer diameter, and the concave portion serves as the O-ring coupling portion 160 .

One end of the lower body 150 is connected to the locking jaw 140, and the other end is connected to the drill unit 170.

The drill unit 170 is a component for drilling a hole at an implant placement position, and includes a twist drill 171 connected to the lower body 150 and a triangular point drill 172 connected to the end of the twist drill 171. It consists of

The outer diameter of the twist drill 171 is formed smaller than the outer diameter of the lower body 150, and preferably, is formed substantially the same as the outer diameter of the O-ring coupling part 160.

The triangular point drill 172 is formed in the shape of a triangular pyramid with a sharp tip. The apex is the part that first comes into contact with the implant placement site. Since the triangular point drill 172 is formed in the shape of a triangular pyramid, slipping can be prevented when selecting an implant placement location, and accurate placement location selection is possible. cutting power can be improved.

Next, the stopper 200 will be described. 1 shows the cross-sectional shape of the stopper 200.

The stopper 200 is formed in a hollow cylindrical shape, and the end of the drill unit 170, that is, the tip of the triangular point drill 172 is inserted into the stopper 200.

Inside the stopper 200, concave portions 211 and 212 for disposing the O-rings O1 and O2 are formed. Two O-rings O1 and O2 are disposed at different positions on the inner wall of the stopper 200. To this end, the concave portions 211 and 212 may be formed at positions where the O-rings O1 and O2 are disposed, respectively. there is. The outer diameter of the stopper 200 may vary according to the size of the implant to be placed, and the operator may select an appropriate stopper 200 according to the size of the implant to be placed and insert it into the drill 100. The stopper 200 is formed substantially similar to the shape of a tooth or an implant.

2 is a view showing a structure in which the stopper 200 is inserted into the drill 100 and the two O-rings O1 and O2 are respectively engaged with the O-ring coupling part 160.

First, referring to FIG. 2 (a), when the operator moves the stopper 200 inserted into the drill 100 from the tip of the drill unit 170 in the direction of the lower body 150, the stopper 200 The first O-ring O1 coupled to the concave portion 211 at the first internal position is coupled to the O-ring coupling portion 160 .

At this time, when the operator applies a greater force to continuously move the stopper 200 in the direction of the locking jaw 140, the second O-ring (O2) coupled to the concave portion 212 at the second position inside the stopper 200 ) is bound to the O-ring coupling part 160, which is shown in (b) of FIG.

In a state where the second O-ring O2 of the stopper 200 is attached to the O-ring coupling part 160, even if the stopper 200 is further moved in the direction of the locking jaw 140, the stopper 200 does not ) cannot be further moved in a further direction.

In addition, in the state where the second O-ring (O2) of the stopper 200 is attached to the O-ring connecting portion 160, unless an external force is applied to separate the second O-ring (O2) from the O-ring connecting portion 160. The stopper 200 does not deviate in the direction of the drill unit 170 .

Therefore, after inserting the stopper 200 into the drill 100, the stopper 200 is not easily separated from the drill 100.

In the process of selecting a location for implant placement, since the oral environment is narrow in the case of the posterior teeth, it is difficult to find an accurate implant placement location because the field of view of the operator is obstructed.

According to the embodiment of the present invention, the operator inserts the stopper 200 into the drill 100 so that the outer surface of the stopper 200 comes into contact with the teeth adjacent to the implant placement position, and then (a) and (b) of FIG. 2 ), after changing the position of the stopper 200, it is possible to check the exact implant placement position through the exposed drill unit 170.

Next, the extension 300 will be described.

The extension 300 is also a component inserted into the drill 100. The outer diameter of the extension 300 may be smaller than the outer diameter of the stopper 200 .

The extension 300 is formed in a hollow cylindrical shape, and the end of the drill unit 170, that is, the tip of the triangular point drill 172 is inserted into the extension 300.

Concave portions 311 and 312 for disposing the O-rings O1 and O2 are formed inside the extension 300 . Two O-rings O1 and O2 are disposed at different positions on the inner wall of the extension 300. To this end, the concave portions 311 and 312 may be formed at positions where the O-rings O1 and O2 are disposed, respectively. there is.

3 is a view showing a structure in which the extension 300 is inserted into the drill 100 and the two O-rings O1 and O2 are connected to the O-ring coupling part 160, respectively.

First, referring to FIG. 3 (a), when the operator moves the extension 300 inserted into the drill 100 from the tip of the drill unit 170 in the direction of the lower body 150, the extension 300 The first O-ring O1 coupled to the concave portion 311 at the first internal position is coupled to the O-ring coupling portion 160 .

At this time, when the operator applies a greater force to continuously move the extension 300 in the direction of the locking jaw 140, the second O-ring (O2) coupled to the concave portion 312 at the second position inside the extension 300 ) is bound to the O-ring coupling part 160, which is shown in (b) of FIG.

In a state where the second O-ring O2 of the extension 300 is attached to the O-ring coupling part 160, even if the extension 300 is further moved in the direction of the locking jaw 140, the extension 300 does not ) cannot be further moved in a further direction.

In addition, in a state where the second O-ring (O2) of the extension 300 is attached to the O-ring connecting portion 160, unless an external force is applied to separate the second O-ring (O2) from the O-ring connecting portion 160. The extension 300 does not deviate in the direction of the drill unit 170 .

During the procedure, the extension 300 is first inserted into the drill 100, and then the stopper 200 is inserted into the drill 100.

According to this, no matter how much force is applied, the extension 300 can move only to the position of the locking jaw 140, and the stopper 200 cannot be moved further by the extension 300.

Accordingly, the maximum length to which the lower body 150 and the drill unit 170 can be exposed is the length obtained by subtracting the lengths of the extension 300 and the stopper 200 from the locking jaw 140 . That is, the drill unit 170 cannot be exposed beyond a predetermined length by the extension 300 and the stopper 200 .

When the implant is placed, if the drill 170 is inserted to a position too deep in the gum, it may cause a risk of contact with a nerve. According to an embodiment of the present invention, the maximum depth into which the drill 170 is inserted can be limited by the extension 300 . The operator may calculate the maximum depth to which the drill 170 is to be inserted, select an appropriate extension 300 from among a plurality of extensions 300 having various lengths, and insert the drill 100 into the drill 100 .

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

100: drill
110: head part
120: bridge
130: upper body
140: snag
150: lower body
160: O-ring coupling part
170: drill part
171: twist drill
172: triangular point drill
200: stopper
211, 212: concave portion
300: extension
311, 312: concave portion

Claims (5)

An upper body formed in a cylindrical shape;
a disc-shaped locking jaw formed at one end of the upper body;
In the locking jaw, a lower body formed on the opposite side of the upper body and formed in a cylindrical shape; and
An implant placement position guide including a drill unit composed of a twist drill extending from an end of the lower body at which the locking jaw is not formed, and a triangular point drill formed at an end of the twist drill and formed in a triangular pyramid shape, among both ends of the lower body. machine. According to claim 1,
As a stopper inserted from the tip of the triangular point drill,
The implant placement position guide mechanism further comprising a stopper having an O-ring coupled to two concave portions formed at different positions on an inner surface, respectively. According to claim 2,
As an extension inserted from the tip of the triangular point drill,
An implant placement position guide mechanism further comprising an extension having an O-ring coupled to two concave portions formed at different positions on an inner surface, respectively. According to claim 3,
The lower body,
As the stopper and the extension move in the longitudinal direction of the drill, the implant placement position guide mechanism having an O-ring locking jaw for engaging with the O-ring of the stopper or the O-ring of the extension. According to claim 4,
An implant placement position guide mechanism in which an extension is first inserted into the drill and then a stopper is inserted.

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