WO2017146335A1

WO2017146335A1 - Implant abutment removing device

Info

Publication number: WO2017146335A1
Application number: PCT/KR2016/011410
Authority: WO
Inventors: 조상춘
Original assignee: (주)이비아이
Priority date: 2016-02-23
Filing date: 2016-10-12
Publication date: 2017-08-31
Also published as: KR101718464B1

Abstract

The present invention relates to an implant abutment removing device and, more particularly, to a device for separating and removing, from a fixture, an abutment, which is coupled to the fixture that serves as an artificial dental root, and which has a hollow formed in parallel with the center axis of the fixture, the device comprising: a rod portion, which is a part elongated along the center axis, has a male screw portion formed on the middle portion thereof, and has an end that can be inserted into the hollow of the abutment; and a receiving member having a through-hole in which the rod portion is received to be able to rotate about the center axis, a coupling portion that can be inserted into and fitted in the hollow of the abutment, and a female screw portion formed on the inner peripheral surface of the through-hole such that the female screw portion can be screw-coupled to the male screw portion, wherein the rod portion rotates relative to the receiving portion along the center axis while the male screw portion of the rod portion is screw-coupled to the female screw portion of the receiving portion such that the receiving portion can reciprocate along the center axis of the rod portion. The present invention can advantageously provide an implant abutment removing device capable of safely separating and removing the abutment from the fixture without damaging the alveolar bone simply by rotating the rod portion relative to the receiving member.

Description

Abutment removal device for implant

The present invention relates to an implant abutment removal device, and more particularly to an implant abutment removal device that can safely remove the abutment from the fixture without damaging the alveolar bone simply by rotating the rod.

Dental implants (also called artificial or third teeth) are dental implants that restore the function of natural teeth by implanting a biocompatible implant body into the jawbone of the site of the missing or pulled tooth. It's a treatment.

Such an implant is generally a fixture that is implanted in the alveolar bone and becomes an artificial root, an abutment for implant which is abutment screwed to the upper end of the fixture, and an upper end of the abutment. And a crown that is a dental prosthesis to be joined.

The conventional implant abutment is, as shown in FIG. 3, in the state where the fixture is disposed in a direction C1 perpendicular to the implantation direction of the fixture 1 on the upper side of the fixture 1 ( 1) is combined with the top hole (3).

The type and use method of such abutments for implants vary depending on the purpose of use, and an example of such abutments M is illustrated in FIG. 3. The abutment (M) has a hollow (H) formed parallel to the central axis (C1) of the fixture (1), is inserted into the upper hole (3) of the fixture (1) and then a separate screw (Not shown) is firmly fixed by inserting into the hollow (H) by screwing the top hole (3).

However, when the abutment (M) is to be separated from the fixture (1) during the procedure of implantation, first remove the screw (not shown) from the upper hole (3) of the fixture (1), and then separately The abutment (M) was pulled out of the top hole (3) of the fixture (1) using a tool of, or a part of the abutment (M) was cut and removed, but the fixture (1) was already removed. After adhering to the alveolar bone, the fixture 1 is swayed left and right in the process of separating the abutment M, thereby causing a high risk of damage to the surrounding alveolar bone of the fixture 1.

As a result, if the surrounding alveolar bone of the fixture 1 is damaged in the process of separating and removing the abutment M, the fixture 1 needs to be re-established, thereby increasing the procedure cost and procedure duration and worsening the treatment result. A problem occurs.

The present invention has been made to solve the above problems, the purpose of the implant abutment removal device for improved implant structure can be removed to safely remove the abutment from the fixture without damaging the alveolar bone simply by rotating the rod portion To provide.

In order to achieve the above object, the abutment removal device for an implant according to the present invention is coupled to a fixture that is an artificial tooth and separates an abutment having a hollow formed in parallel with a central axis of the fixture from the fixture. Apparatus for removing by, as long as extending along the central axis, the middle portion is formed with a male screw portion, the rod portion having one end that can be inserted into the hollow of the abutment; A through hole rotatably receiving the rod portion about the central axis, a coupling portion that can be inserted into and coupled to the hollow of the abutment, and is formed on an inner circumferential surface of the through hole so as to be screwable with the male screw portion. An accommodating member having a female thread portion, wherein the rod portion is rotated relative to the accommodating member along the central axis while the male screw portion of the rod portion is screwed with the female screw portion of the accommodating member. Characterized in that the reciprocating movement along the central axis of the rod portion.

Here, it is preferable that the rod part is a circular rod whose diameter gradually decreases toward the one end part.

Here, it is preferable that the cylindrical head part is provided in the other end part of the said rod part.

Here, it is preferable that a plurality of mounting grooves are formed along the circumference of the outer circumferential surface of the head portion.

Here, the accommodation member, the cylindrical body portion; And a protrusion protruding from the main body portion along the central axis, wherein the coupling portion is formed on an outer surface of the protrusion.

Here, the protrusion is preferably formed in a pipe shape having the through hole in the hollow, and the female screw portion is formed on the inner circumferential surface of the protrusion.

Here, it is preferable that a plurality of mounting grooves are formed along the circumference of the outer circumferential surface of the body portion.

Here, the coupling portion is preferably formed of a male screw having a screw thread inclined in one direction so as not to fall after being inserted into the hollow of the abutment by rotation.

According to the present invention, a portion extending along the central axis, the middle portion is formed with a male screw portion, the rod portion having one end that can be inserted into the hollow of the abutment; A through hole rotatably receiving the rod portion about the central axis, a coupling portion that can be inserted into and coupled to the hollow of the abutment, and is formed on an inner circumferential surface of the through hole so as to be screwable with the male screw portion. An accommodating member having a female thread portion, wherein the rod portion is rotated relative to the accommodating member along the central axis while the male screw portion of the rod portion is screwed with the female screw portion of the accommodating member. Since the rod can be reciprocated along the central axis, the abutment removal device for implants can be removed to remove the abutment from the fixture safely without damaging the alveolar bone simply by rotating the rod relative to the receiving member. There is an effect that can be provided.

1 is an exploded view of an implant abutment removal device of an embodiment of the present invention.

FIG. 2 is an assembly view of the abutment removal device for the implant shown in FIG. 1.

FIG. 3 is a view illustrating a state in which an abutment to be used in the implant abutment removal device shown in FIG. 1 is coupled to a fixture.

4 is a view showing a state in which the implant abutment removal device shown in Figure 1 is coupled to the hollow of the abutment coupled to the fixture.

5 is a view showing a state in which the distal end of the rod portion of the implant abutment removal device shown in FIG. 1 moves forward to contact the bottom of the top hole of the fixture.

FIG. 6 is a view illustrating a state in which the abutment and the fixture are separated from each other by moving the receiving member of the implant abutment removal device shown in FIG. 1 backward with respect to the rod part.

FIG. 7 is a left side view of the driver shown in FIG. 1. FIG.

8 is a cross-sectional view taken along the line A-A of the driver shown in FIG.

9 is a cross-sectional view taken along the line B-B of the driver shown in FIG.

10 is a left side view of the receiving member shown in FIG. 1.

11 is a cross-sectional view taken along the line C-C of the receiving member shown in FIG.

12 is a cross-sectional view taken along the line D-D of the receiving member shown in FIG. 1.

FIG. 13 is an enlarged view of a coupling part of the accommodation member illustrated in FIG. 1.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is an exploded view of an implant abutment removal device for an embodiment of the present invention, Figure 2 is an assembly view of the implant abutment removal device shown in FIG. FIG. 3 is a view illustrating a state in which an abutment to be used in the implant abutment removal device shown in FIG. 1 is coupled to a fixture.

1 to 3, the abutment removal device 100 for an implant according to a preferred embodiment of the present invention is an abutment coupled to a fixture 1 that is an artificial tooth as shown in FIG. 3. An apparatus for separating and removing the article M from the fixture 1, comprising a driver 10 and a receiving member 20. Hereinafter, the abutment (M) has a hollow (H) formed parallel to the central axis (C1) of the fixture (1), the fixture (1) is an outer surface (2) coupled to the alveolar bone And it will be described on the premise having a top hole (3) which is a hole formed in the upper end.

The driver 10 includes a rod portion 11 and a head portion 12 and is a member coupled to the accommodation member 20 so as to be relatively rotatable with respect to the central axis C1.

The rod portion 11 is a circular rod extending along the central axis C1, and is formed such that diameters D1, D2, D3, and D4 decrease in steps toward the distal end portion 14.

The distal end portion 14 of the rod portion 11 has a diameter D4 that can be inserted into the hollow H of the abutment M. FIG.

In this embodiment, the rod 11 has a diameter of D1 = 1.9 mm, D2 = 1.8 mm, D3 = 1.3 mm, and D4 = 1.2 mm.

A male screw portion 13 is formed in the middle portion of the rod portion 11 over the length of 10 to 15 mm along the central axis C1.

The head portion 12 is a cylindrical portion having the center axis C1 as the center of the circle, and is provided on the opposite side of the distal end portion 14.

On the outer circumferential surface of the head portion 12, a plurality of mounting grooves 16 are formed along the circumference.

The mounting groove 16 is a groove cut to have an arcuate cross section as shown in FIG.

At the left end of the head portion 12, a pair of mounting jaws 15 are formed in parallel with each other, as shown in FIG.

The mounting groove 16 and the mounting jaw 15 are portions to which a separate tool (not shown) used to rotate or fix the driver 10 may be coupled.

In the head portion 12, a circular hole 17 is formed as shown in Figs.

The hole 17 of the head portion 12 is a hole formed to reduce the weight of the head portion 12 and to reduce the material cost.

The accommodating member 20 is a member for rotatably accommodating the rod part 11 of the driver 10, and includes a protrusion 21, a main body part 22, and a through hole 24.

The protruding portion 21 is a pipe-shaped portion having the through hole 24 in the hollow, and extends along the central axis C1.

The main body portion 22 is a cylindrical portion having the center axis C1 as the center of the circle, and the through hole 24 is formed therein.

On the outer circumferential surface of the main body portion 22, a plurality of mounting grooves 27 are formed along the circumference.

The mounting groove 27 is a groove cut to have an arcuate cross section as shown in FIGS. 2 and 12.

At the left end of the main body portion 22, a pair of mounting jaws 25 are formed to be parallel to each other as shown in FIG.

The mounting groove 27 and the mounting jaw 25 are portions to which a separate tool (not shown) used to rotate or fix the accommodation member 20 may be coupled.

The protrusion 21 is connected to the right end of the main body 22, as shown in FIG.

The through hole 24 is a circular hole rotatably accommodating the rod portion 11 about the central axis C1 so as to completely penetrate the main body portion 22 and the protruding portion 21. It is.

On the outer surface of the protrusion 21, a coupling portion 23 that can be inserted into the hollow (H) of the abutment (M) is coupled is formed.

The coupling portion 23 is inserted into the hollow (H) of the abutment (M) by rotating the screw thread 231 inclined in one direction as shown in Figures 1 and 13 so as not to fall out. It is formed by the male screw provided.

That is, as shown in FIG. 13, the upper right surface of the thread 231 has a first angle α1, and the upper left surface of the thread 231 has a second angle greater than the first angle α1. has (α2). In the present embodiment, the first angle α1 is 15 degrees and the second angle α2 is 75 degrees.

Therefore, when the coupling portion 23 is rotated in one direction and inserted at a predetermined depth into the hollow H of the abutment M, the abutment M may not be easily pulled out even when the abutment M is simply pulled from the outside. It has a structure.

On the inner circumferential surface of the through hole 24 formed inside the protruding portion 21, a female screw portion 26 which is screwable with the male screw portion 13 is formed.

The female screw portion 26 is formed along the central axis C1 over a length of 3 to 8 mm.

As a result, as shown in FIG. 2, in the state where the male screw portion 13 of the rod portion 11 is screwed with the female screw portion 26 of the receiving member 20, the rod portion 11 is When the relative rotation in both directions with respect to the receiving member 20 along the central axis (C1), the receiving member 20 is able to reciprocate along the central axis (C1) of the rod (11).

Below, an example of the method of using the implant abutment removal apparatus 100 of the above-mentioned structure is demonstrated.

First, as shown in FIG. 2, the male screw portion 13 of the rod portion 11 and the female screw portion 26 of the accommodation member 20 are screwed together so that the accommodation member 20 is connected to the driver ( Insert into the rod part 11 of 10). At this time, the distal end portion 14 of the rod portion 11 is exposed to the outside of the receiving member 20.

Subsequently, while the protrusion 21 of the receiving member 20 is inserted into the hollow H of the abutment M, a tool such as an open wrench or a torque wrench is used. When the main body portion 22 is rotated in one direction about the central axis C1, the coupling portion 23 moves forward into the hollow H of the abutment M, As shown, the coupling portion 23 is coupled to the hollow (H) of the abutment (M) in the inserted state. At this time, the distal end portion 14 of the rod portion 11 passes through the hollow (H) of the abutment (M) and is located inside the upper hole (3) of the fixture (1).

After the receiving member 20 and the abutment M are firmly coupled, the main body 22 is fixed so as not to rotate by using a separate tool, and then, using a tool such as a torque wrench, the driver ( When the head portion 12 of 10 is rotated in one direction about the central axis C1, the rod portion 11 is moved relative to the right side with respect to the receiving member 20 as shown in FIG. 5. The end portion 14 of the rod portion 11 is in contact with the bottom of the top hole 3 of the fixture (1).

In such a state that the distal end 14 of the rod part 11 is in contact with the bottom of the upper end hole 3 of the fixture 1, the head part 12 of the driver 10 is moved to the central axis C1. If it continues to rotate in one direction, the end portion 14 of the rod portion 11 pushes the bottom of the upper hole 3 of the fixture 1, whereby the receiving member 20 and the fixture (1) 6), the abutment M is completely separated from and removed from the top hole 3 of the fixture 1 as shown in FIG.

The implant abutment removal device 100 having the above-described configuration is a portion extending along the central axis C1, and an external thread portion 13 is formed at an intermediate portion of the implant abutment M. A rod portion 11 having an end portion 14 that can be inserted into the hollow H of the rod portion 11; A through hole 24 rotatably accommodating the rod part 11 about the central axis C1 and a coupling part inserted into the hollow H of the abutment M and coupled thereto ( And a receiving member (20) having a female screw portion (26) formed on an inner circumferential surface of the through hole (24) to be screwable with the male screw portion (13). In the state where the male screw portion 13 of the) is screwed with the female screw portion 26 of the receiving member 20, the rod portion 11 with respect to the receiving member 20 along the central axis (C1). Since the accommodating member 20 can reciprocate along the central axis C1 of the rod part 11 by relatively rotating, it is only necessary to rotate the rod part 11 relative to the accommodating member 20. The abutment M can be safely removed from the fixture 1 without damaging the alveolar bone.

In addition, the implant abutment removal device 100 is a rod having the rod portion 11 gradually smaller in diameter as it goes toward the one end portion 14, so that the rod portion 11 is disposed in the receiving member. It is easy to insert into the through-hole 24 of the (20), there is an advantage that the male screw portion 13 is easy to form in the rod portion (11).

In addition, since the cylindrical head portion 12 is provided at the other end of the rod portion 11, the implant abutment removal device 100 includes a separate tool (not shown). By coupling to), there is an advantage that it is easy to rotate or fix the driver 10 with a small force.

In the implant abutment removal device 100, since a plurality of mounting grooves 16 are formed on the outer circumferential surface of the head part 12 along a circumference, a separate tool such as a torque wrench (not shown) Using it is an advantage that it is easy to rotate or fix the driver 10.

In addition, the implant abutment removal device 100, the housing member 20, the cylindrical body portion 22 of the cylindrical shape; And a protrusion 21 protruding from the main body portion 22 along the central axis C1. The coupling portion 23 is formed on an outer surface of the protrusion 21. Part 23 has the advantage that it is easy to combine or detach the hollow (H) of the abutment (M).

The implant abutment removal device 100 is formed in a pipe shape in which the protrusion 21 has the through hole 24 in a hollow form, and the female screw portion 26 is formed on an inner circumferential surface of the protrusion 21. ) Is formed, and the coupling portion 23 is formed on the outer surface of the protrusion 21, so that the distal end 14 of the rod portion 11 is fixed to the fixture 1 as shown in FIG. 6. In the situation of pushing out the bottom of the upper hole 3 of the upper part, the operating point of the force applied to the female threaded portion 26 and the operating point of the force applied to the engaging portion 23 are close to each other, and the receiving member 20 is used. There is an advantage that the possibility of unnecessarily overturning in the middle is small.

In addition, the implant abutment removal device 100 has a plurality of mounting grooves 27 formed on the outer circumferential surface of the body portion 22 along a circumference, so that a separate tool such as a torque wrench (not shown) is provided. Using it is an advantage that it is easy to rotate or fix the receiving member 20.

In addition, the implant abutment removal device 100 includes a screw thread 231 inclined in one direction such that the coupling part 23 is inserted into the hollow H of the abutment M by rotation. Since the coupling portion 23 is rotated in one direction and inserted into the hollow H of the abutment M at a predetermined depth, the abutment M is externally formed. There is an advantage that it does not fall easily even by simply pulling.

Although the present invention has been described above, the technical scope of the present invention is not limited to the contents described in the above-described embodiments, and an equivalent configuration modified or changed by those skilled in the art is a technical feature of the present invention. Obviously, it is not beyond the scope of thought.

Claims

An apparatus for separating and removing an abutment having a hollow coupled to a fixture that becomes an artificial tooth and having a hollow formed in parallel with a central axis of the fixture,

A rod portion extending along the central axis, the middle portion having a male screw portion formed therein, and having a one end portion inserted into the hollow of the abutment;

A through hole rotatably receiving the rod portion about the central axis, a coupling portion that can be inserted into and coupled to the hollow of the abutment, and is formed on an inner circumferential surface of the through hole so as to be screwable with the male screw portion. A receiving member having a female thread portion;

In the state that the male screw portion of the rod portion is screwed with the female screw portion of the accommodating member, the rod portion is relatively rotated with respect to the accommodating member along the central axis, so that the accommodating member can reciprocate along the central axis of the rod portion Abutment removal device for implants
The method of claim 1,

The rod portion, the implant abutment removal device, characterized in that the circular rod is smaller in diameter step by step toward the one end
The method of claim 1,

At the other end of the rod portion, an abutment removal device for an implant, characterized in that a cylindrical head portion is provided.
The method of claim 3, wherein

Abutment removal device for an implant, characterized in that the outer peripheral surface of the head portion, a plurality of mounting grooves are formed along the circumference
The method of claim 1,

The receiving member includes a cylindrical main body portion; And a protrusion protruding along the central axis from the main body.

The abutment removal device for an implant, characterized in that the coupling portion is formed on the outer surface of the protrusion.
The method of claim 5,

The protrusion is formed in a pipe shape having the through hole in the hollow, the abutment removal device for an implant, characterized in that the female screw portion is formed on the inner peripheral surface of the protrusion.
The method of claim 5,

Abutment removal device for an implant, characterized in that the outer peripheral surface of the main body portion, a plurality of mounting grooves are formed along the circumference
The method of claim 1,

The coupling portion, the implant abutment removal device characterized in that it is formed of a male screw having a screw thread inclined in one direction so as not to fall out after being inserted into the hollow of the abutment.