KR100988305B1 - Surgical driver for otrhodontic screw - Google Patents

Abstract

The present invention relates to an orthodontic screw driver, and more particularly, in an orthodontic screw procedure driver for rotating the screw orthodontic screw along an axis of rotation to be placed in the oral cavity, wherein the axis of rotation from the one end is inserted such that the screw for orthodontic screw is inserted. A driver body including an accommodating space extending along the fastening portion having a through hole passing through an outer circumferential surface and an inner circumferential surface of the accommodating space, and a body portion extending from the fastening portion; A collet body coupled to the outer circumferential surface of the driver body part to slidably move on the outer circumferential surface thereof in a rotational axis direction, a locking jaw inserted into the receiving space through the through hole and engaged with the screw, and the locking jaw being the rotation shaft. A collet portion including an elastic member connecting the locking jaw and the collet body so as to be elastically biased in a direction close thereto; And position fixing means for fixing the collet body on the outer circumferential surface of the driver body portion so as to maintain the engaging jaw of the collet portion inserted into the through hole.

Fastening part, body part, locking jaw, collet part, position fixing means

Description

Screwdriver for orthodontic screw operation {Surgical driver for otrhodontic screw}

The present invention relates to a screw for orthodontic screw surgery, and more particularly to a screw for orthodontic screw surgery that can stably support the calibration screw.

The orthodontic screw is mainly inserted in the oral cavity for orthodontic implantation and implanted in cortical bone, etc. The screwdriver for orthodontic screw surgery is a tool used for implanting or removing such orthodontic screw in cortical bone. The prior art of such a screw driver for orthodontic screw treatment is Republic of Korea Utility Model No. 20-373744. Specifically, in the prior art, a calibration screw driver (hereinafter referred to as 'prior art 1') as shown in FIGS. 1 and 2 and a calibration screw driver as shown in FIGS. 'Prior Art 2').

Driver 100 according to the prior art 1 has a cylindrical cylindrical shape is formed with a hole 120 for inserting the screw 200 on one side end surface, the mounting groove 122 is formed inside the hole 120 Formed. The inside of the hole 120 is a large diameter portion is formed by the middle diameter portion 121 and the seating groove 122 is formed with a polygonal surface for rotating the screw 200, and extends from the seating groove 122 is a screw ( It is formed of a small diameter portion 123 for limiting the progress of the second head 230 of the (200). The mounting groove 122 is inserted into the groove 240 of the screw 200 is inserted into a predetermined portion of the fluorine rubber O-ring 110 to elastically support the screw 200.

The driver according to the prior art 1 has the following problems.

First of all, if the fluorine rubber O-ring is weak and the screw is repeatedly clamped, the surface is damaged (plastic deformation or scratching), which weakens the fixing function of the screw, and thus, the fluorine rubber O-ring needs to be replaced frequently. This will be.

In addition, the fluorine rubber O-ring is provided in the inside of the hole is not easy to install or replace, there is a problem that takes too long to install or replace. In particular, the insertion of the micro fluorine rubber O-ring in the correct mounting groove requires a skilled worker has a problem that it is difficult for the operator to replace the operation at the site.

In addition, in the case of the fluorine rubber O-ring provided therein may be screwed and pinch phenomenon, there is a fear of the deterioration and loss of the fixing function. In addition, there is a fear that the screw falls during transportation in a state where the screw is fixed due to such a decrease and loss of function. In addition, when the elastic body is broken, there is a problem that the gap between the screw and the screw cannot be properly fixed.

The driver according to the related art 2 has a cylindrical shape, and a hole 330 for inserting the second head 230 'and the first head 220' of the screw 200 'is formed at one side end face in the longitudinal direction. It is. The hole 330 has a plurality of through holes communicating with the outer surface of the driver 300, and a metal ball 320 is inserted into the through hole. The metal ball 320 is inserted through the outer circumferential surface of the metal ball 320 so that the metal ball 320 is elastically supported and the metal ball 320 is not detached from the screw 200 ′ inserted into the hole 330. The rubber band 310 surrounding the hole is provided.

The driver according to the related art 2 has the following problems.

First, the metal ball for fixing the screw is about 1mm in diameter, but there is a problem that it is not easy to assemble the insertion of such a ball into the through hole.

In addition, because the screw is fixed by the elasticity of the rubber band for supporting the metal ball has a problem that the fixing force is relatively weak.

In addition, there is a possibility of loss of the rubber band due to fracture or heat, as well as the possibility of whitening due to friction with the metal ball.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a screwdriver for a straightening screw procedure that is easy to assemble, can stably fix a screw, and has excellent durability.

Orthodontic screw driver of the present invention for achieving the above object, including a receiving space extending along the rotation axis from one end so that the screw for correcting the screw is inserted is formed with a through hole penetrating the outer peripheral surface and the inner peripheral surface of the receiving space A driver body part including a fastening part and a body part extending from the fastening part; A collet body coupled to an outer circumferential surface of the driver body part to slidably move on the outer circumferential surface thereof in a rotational axis direction, a locking jaw that is inserted into the accommodation space through the through hole, and is engaged with the screw, A collet part including an elastic member connecting the engaging jaw and the collet body to be elastically biased in a direction close to the rotation axis; And position fixing means for fixing the collet body on the outer circumferential surface of the driver body portion so as to maintain the engaging jaw of the collet portion inserted into the through hole.

In the calibration screw driver, at least two through holes are preferably formed symmetrically with respect to the rotation axis.

In the calibration screw driver, the collet portion is preferably made of titanium.

In the orthodontic screw driver, the receiving space is a first groove having a polygonal inner surface plurally arranged in the circumferential direction so that a flat surface extending in a direction parallel to the rotation axis from one end along the corner, and the first It is preferably composed of a second groove formed to extend in a direction parallel to the rotation axis from the groove.

In the calibration screw driver, the outer peripheral surface of the fastening portion is preferably located on a surface perpendicular to the flat surface, the guide groove extending in a direction parallel to the axis of rotation is formed.

In the orthodontic screw driver, the through hole is preferably located on a surface passing through the axis of rotation perpendicular to the flat surface.

In the straightening screw driver, it is preferable that a guide groove is formed on an outer circumferential surface of the fastening portion and extends in a direction parallel to the rotation axis from the through hole and has a cross-sectional area in which the locking jaw can be accommodated.

In the straightening screw driver, the guide groove preferably extends to the body portion.

In the straightening screw driver, the elastic member is preferably an elastic piece of metal material extending from the collet body and connected to the locking jaw and pressing the locking jaw close to the rotation axis.

In the calibration screw driver, the position fixing means,

Preferably, the collet body comprises first fixing means for inhibiting movement of the collet body to one end side and second fixing means for suppressing movement of the collet body to the other end side.

In the orthodontic screw driver, the first fixing means is preferably a protruding body protruding from the outer peripheral surface of one end side of the driver body portion and contacting one end of the collet body to prevent the collet body from moving to one end side.

In the orthodontic screw driver, the second fixing means includes a mounting groove circumferentially formed on an outer circumferential surface of the driver body portion, and a portion of the collet body detachably inserted and inserted into contact with the other end of the collet body. It is preferable that it is an elastic body which prevents a body from moving to the other end side.

In the straightening screw driver, the elastic body is preferably an elastic ring made of fluororubber material.

Driver for orthodontic screw operation according to the present invention has the advantage that it can be easily assembled by a simple operation of inserting and engaging the collet portion in the driver body.

In addition, since the elastic member for fixing the screw is made of a metal material, the overall driver is excellent in durability and heat resistance.

In addition, since the insertion direction of the screw to be inserted into the driver can be easily identified by the guide groove, there is an advantage that the operator can easily insert the screw into the driver in the field.

Hereinafter, the screw driver for orthodontic treatment of the present invention will be described in detail with reference to the accompanying drawings.

5 is an exploded perspective view of a screwdriver for orthodontic screw treatment according to a preferred embodiment of the present invention, FIGS. 6 to 7 are views illustrating a state of assembling the driver of FIG. 5, and FIG. 8 is a perspective view of FIG. 5. 9 and 10 are cross-sectional views of main parts of FIG. 5.

The screwdriver for the straightening screw procedure 1 includes a driver body portion 10, a collet portion 20, and a position fixing means 30. The screw straightening screw 40 is rotated along a rotation axis to allow a human body to rotate. It is to be placed in the mouth of the doctor.

The straightening screw 40 includes a threaded portion 41 having a thread formed thereon, a polygonal portion 42 extending from the threaded portion 41 along the central axis of the threaded portion and having a polygonal surface formed on an outer circumferential surface thereof; A neck portion 43 extending from the polygonal portion 42 along the central axis of the screw and having a cross-sectional diameter smaller than the polygonal portion 42; and extending from the body portion along the central axis of the screw and above the neck portion 43; It consists of an upper end 44 having a large cross-sectional area.

The driver body portion 10 is composed of the fastening portion 11 and the main body portion 14, and is made in the shape of a rod extending in one direction as a whole.

The fastening part 11 is a part that forms one side of the driver body part 10 and includes a receiving space 12 extending along the rotation axis from one end to insert the screw straightening screw 40. . The fastening portion 11 is formed with a through hole 13 penetrating the outer peripheral surface and the inner peripheral surface of the receiving space 12.

Specifically, the accommodation space 12 is formed so that the first groove portion 12a and the second groove portion 12b extend from one end. The first groove portion 12a is a polygonal portion of the screw 40 is inserted, a plurality of polygonal shape is arranged in the circumferential direction so that a flat surface extending in a direction parallel to the axis of rotation from one end in contact with each corner It has an inner shape of. That is, the first groove 12a is formed to have a cross-sectional shape corresponding to the polygonal portion 42 of the screw 40. Therefore, when the polygonal portion 42 of the screw 40 is coupled to the first groove 12a, the rotation of the screw 40 relative to the driver is constrained.

The second groove 12b is a portion formed to extend in a direction parallel to the rotation axis from the first groove 12a and is a portion into which the neck 43 and the upper end 44 of the screw are inserted.

The through hole 13 is formed to penetrate an inner circumferential surface of the second groove portion 12b into which the neck portion 43 is inserted. In the through hole 13, a locking jaw 22 to be described later may be inserted. Two through holes 13 are formed symmetrically with respect to the rotation axis, but the present invention is not limited thereto, and three or more through holes 13 may be formed. The size of the through hole 13 may have a cross-sectional diameter corresponding to the size of the locking step 22 described later. The through hole 13 is located on the surface passing through the axis of rotation perpendicular to the flat surface.

On the outer circumferential surface of the fastening portion 11 is located on a surface perpendicular to the flat surface of the first groove portion 12a of the accommodation space 12, the guide groove 15 is formed extending in a direction parallel to the rotation axis is formed do. Specifically, the guide groove 15 of the fastening portion 11 preferably extends from the through hole 13 in a direction parallel to the rotation axis to extend to the end of the main body portion 14.

The guide groove 15 allows the polygonal portion 42 of the screw 40 to be easily inserted into the polygonal surface of the first groove 12a. Specifically, the guide groove 15 serves to easily inform the direction of the polygonal surface of the first groove 12a that is difficult to recognize from the outside. Specifically, as the portion having the flat surface in the first groove 12a and the guide groove 15 coincide with each other, the flat portion of the polygonal surface of the screw 40 in the portion where the guide groove 15 is formed ( When inserting in the “A” part of FIG. 5, the screw 40 can be easily inserted.

If the polygonal portion 42 of the screw 40 is not properly inserted into the polygonal surface of the first groove 12a, the screw 40 will not be inserted, and the operator will have a considerable time to find the correct position. You will have to listen. The guide groove 15 preferably has a size that can accommodate the locking step 22 of the elastic member 23 to be described later. Accordingly, the locking jaw 22 of the elastic member 23 can be guided from the body portion 14 to the through hole 13 of the fastening portion 11 along the guide groove 15.

The collet 20 includes a collet body 21, a locking jaw 22, and an elastic member 23.

The collet body 21 is fitted to the outer circumferential surface of the driver body portion 10 so as to slide on the outer circumferential surface of the driver body portion 10 in the rotational axis direction. The collet body 21 is formed in a cylindrical shape having an inner diameter shape corresponding to the outer diameter of the driver body portion 10 as a whole. The collet body 21 is preferably made of a metal material such as titanium, but is not limited thereto. It is also possible to use various metal materials.

The locking jaw 22 is inserted into the accommodation space 12 through the through hole 13 to be engaged with and engaged with the screw calibration screw 40. Specifically, as a configuration to perform the function of fixing the screw 40 in combination with the neck portion 43 of the screw 40, it is arranged spaced apart from one end of the collet body 21 by a predetermined interval. The locking jaw 22 is made of a metal material such as titanium, so that the surface is not damaged even when frequent friction with the screw 40 occurs.

The elastic member 23 is to connect the locking jaw 22 and the collet body 21 so that the locking jaw 22 can be elastically biased in a direction close to the rotating shaft. The elastic member 23 is an elastic piece extending from the collet body 21 in a direction parallel to the rotating shaft and connected to the locking jaw 22 to press the locking jaw 22 close to the rotating shaft. The elastic member 23 is also made of a metal material such as titanium is not easily broken even if repeated use.

The position fixing means 30 positions the collet body 21 on the outer circumferential surface of the driver body portion 10 so that the locking jaw 22 of the collet portion 20 can be maintained inserted into the through portion. It is fixed. Specifically, the first fixing means 31 and the second fixing means 32 are formed.

The first fixing means 31 is to prevent the collet body 21 from moving to one end side, and is configured to protrude from the outer peripheral surface of the one end side of the driver body part 10. The first fixing means 31 is in contact with one end of the collet body 21 to prevent the collet body 21 from moving to one end side.

The second fixing means 32 is to prevent the collet body 21 from moving to the other end side, and is composed of a mounting groove 33 and an elastic body 34. The mounting groove 33 is a groove formed in the circumferential direction on the outer circumferential surface of the driver body portion 10. The elastic body 34 is detachably inserted into the mounting groove 33, and when the inserted portion is inserted into the mounting groove 33, the inserted portion contacts the other end of the collet body 21 so that the collet body ( 21) is prevented from moving to the other end side.

The elastic body 34 is preferably made of a fluorine rubber material having excellent elasticity, but is not limited thereto, and various synthetic resin materials may be used. Specifically, the elastic body 34 is formed in the shape of a ring, but is not limited thereto, and may be formed in various forms.

Driver for orthodontic screw operation according to a preferred embodiment of the present invention having the above-described configuration has the following effects.

First, as shown in FIG. 5, the surgical drivers that are separated from each other are assembled in the order as shown in FIGS. 6 and 7. First, as shown in FIG. 6, the collet portion 20 is coupled to the driver body portion 10. Specifically, the collet body 21 is fitted to the fastening portion 11 by fitting the collet body 21 from the end of the main body portion 14 of the driver body portion 10. In this case, the locking jaw 22 is guided and moved in a direction corresponding to the rotating shaft in a state of being fitted into the guide groove 15. The collet body 21 that is moved to the fastening part 11 stops its position movement while the locking jaw 22 is inserted into the through hole 13. When the locking jaw 22 reaches the through hole 13, the elastic member 23 pushes the locking jaw 22 in a direction close to the rotating shaft to fix the locking jaw 22, and the collet body 21 The position fixing means 30 is stopped by the first fixing means 31. Subsequently, as shown in FIG. 7, the elastic body 34 is inserted and inserted from the main body 14 to move in a direction parallel to the rotation axis, and finally seated in the mounting groove 33 to provide the collet body ( 21) is suppressed from moving to the other end side.

Thereafter, as shown in FIG. 8, the screw 40 is inserted into the accommodation space 12 to be inserted. Specifically, referring to FIGS. 9 and 10, while the screw 40 is inserted, the screw 43 is positioned in the second groove 12b to be inserted inwardly through the through hole 13. Position to be caught by the locking jaw (22). In addition, the polygonal portion 42 of the screw 40 is positioned so as to lie on the polygonal surface of the first groove 12a. At this time, the screw 40 is a flat surface of the polygon surface is inserted in the direction corresponding to the guide groove 15, it is easy to insert into the first groove portion (12a).

Thereafter, the screw 40 is placed on a predetermined space in the mouth of the desired subject, and the screw is rotated to insert the screw 40 into the bone tissue. After the screw 40 is in the desired position, the driver is separated from the screw 40. The separating process only needs to perform a process of moving the drive away from the screw 40 along the rotation axis direction. In this way, when the driver is pulled out, the locking portion moves in a direction away from each other by the upper end 44 of the screw 40 and at the same time allows the screw 40 to be released from the receiving space 12, and the screw 40 After exiting from the accommodation space 12, the engaging jaw 22 is returned to its original position by the elastic member 23. Thereafter, the operator may insert the new screw 40 back into the receiving space 12 by the same method as described above.

On the other hand, when the pair of engaging jaws 22 facing each other due to repetitive use is weakened due to the elastic force is weakened by pressing the locking jaws 22 are separated from each other without having to replace the collet portion 20 separately and the rotating shaft and Press in the direction that is close. In other words, pressing the open jaw 22 to be close to each other will be able to restore the initial elastic force again.

Since the driver according to the present invention uses a metal material such as titanium as the elastic member, there is no fear of breakage due to repeated use, and there is an advantage that the fixing force for fixing the screw is also sufficient.

In addition, the locking jaw in repeated contact with the screw is made of titanium not only not easily damaged, there is an advantage that less damage to the locking jaw is easily opened in the screw insertion process.

In addition, in this embodiment, it is possible to easily recognize the direction of the screw to be inserted by the guide groove has the advantage that it can be easily seated in the first groove in one operation.

In addition, in the present embodiment, there is little concern that the locking portion may be caught in the neck of the screw while the screw is inserted, so that the screw can be easily detached from the driver body.

In addition, the present embodiment has the advantage that the assembly time is shortened because the assembly is completed due to the easy operation of inserting the collet part and the elastic body in the driver body part, and the operator can easily replace and assemble in the field because no special equipment or equipment is required. have.

In addition, even when the distance between the locking step is increased due to repeated use, the elastic force is reduced, there is an advantage that the elastic force can be restored as the initial state only by pressing the locking step in a direction close to the rotation axis.

Driver for orthodontic screw operation according to a preferred embodiment of the present invention may be modified as follows.

First, in the above-described embodiment, the body has a long length and a structure that is easy for a person to hold by hand so that the operator can hold the driver by hand, and as shown in FIGS. 11 and 12, a mechanical rotating device may be combined. It is also possible that the engaging portion is attached to the end of the body portion. The assembling method in the embodiment shown in FIGS. 11 and 12 is similar to the above-described method, and thus detailed description thereof will be omitted.

In addition, as shown in Figure 13 and 14, it is also applicable to the form that the wrench coupling portion 16 which can be coupled to the wrench to the body portion is further coupled. The wrench coupling portion 16 has a hexagonal cross-section of its outer circumferential surface so that the wrench can be easily detached. At this time, the guide groove is not provided in the main body portion and is formed in the guide groove only in the fastening portion. Other assembling methods are similar to those described above, and thus detailed descriptions thereof will be omitted.

Although the present invention has been described in detail by way of examples, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

1 is an exploded perspective view of a driver according to the prior art.

2 is a coupling diagram of FIG.

Figure 3 is an exploded perspective view of a driver according to another prior art.

4 is a combined view of FIG.

5 is an exploded perspective view of a screwdriver for orthodontic screw treatment according to an embodiment of the present invention.

6 to 7 are views showing how to assemble the driver of FIG.

8 is a perspective view of the combination of FIG.

9 and 10 are cross-sectional views of the main parts of FIG.

11 and 12 illustrate a driver according to another embodiment of the present invention.

13 and 14 illustrate a driver according to another embodiment of the present invention.

<Detailed Description of Drawings>

1 ... driver 10 ... driver body

11 ... joint 12 ... accommodation space

12a ... first groove 12b ... second groove

13 ... through hole 14 ... main unit

15 ... Guide groove 20 ... Collet section

21 ... collet body 22 ...

23 Elastic member 30 Position fixing means

31 ... first fixing means 32 ... second fixing means

33.Mounting groove 34 ... Elastic body

40 ... screw

Claims (13)

In the orthodontic screw driver for rotating the screw calibration screw along the axis of rotation to be placed in the oral cavity, A driver body comprising a fastening part including a receiving space extending along the rotation axis from one end to insert the screw for correcting the screw, and having a through hole penetrating through an outer circumferential surface and an inner circumferential surface of the receiving space, and a body part extending from the fastening part. part; A collet body coupled to the outer circumferential surface of the driver body part to slidably move on the outer circumferential surface thereof in a rotational axis direction, a locking jaw inserted into the receiving space through the through hole and engaged with the screw, and the locking jaw being the rotation shaft. A collet portion including an elastic member connecting the locking jaw and the collet body so as to be elastically biased in a direction close thereto; And And a fixing means for positioning the collet body on the outer circumferential surface of the driver body portion so that the engaging jaw of the collet portion can be inserted into the through hole. The method of claim 1, At least two through-holes are formed symmetrically with respect to the axis of rotation, the screw driver for the calibration screw. The method of claim 1, The collet screwdriver for orthodontic screw treatment, characterized in that made of a material of titanium. The method of claim 1, The accommodation space may include a first groove having a polygonal inner surface shape arranged in a circumferential direction such that a flat surface extending in a direction parallel to the rotation axis from one end thereof is along the edge, and parallel to the rotation axis from the first groove. Driver for orthodontic screw treatment, characterized in that consisting of a second groove formed to extend in one direction. The method of claim 4, wherein The outer peripheral surface of the fastening portion is located on a plane perpendicular to the flat surface, the screw driver for the orthodontic screw treatment, characterized in that a guide groove extending in a direction parallel to the rotation axis is formed. The method of claim 4, wherein And said through hole is positioned on a surface passing through said axis of rotation perpendicular to said flat surface. The method of claim 6, And a guide groove extending from the through-hole in a direction parallel to the rotation axis from the through hole and having a cross-sectional area in which the locking jaw can be accommodated. The method according to claim 5 or 7, And the guide groove extends to the main body. The method of claim 1, The elastic member extends from the collet body is connected to the locking jaw and the screw driver for the orthodontic screw treatment, characterized in that the elastic piece of metal material to press the locking jaw close to the rotation axis. The method of claim 1, The position fixing means, And a first fixing means for suppressing movement of said collet body to one end side and a second fixing means for suppressing movement of said collet body to the other end side. The method of claim 10, And the first fixing means is a protruding body protruding from the outer peripheral surface of the one end side of the driver body portion and contacting one end of the collet body to prevent the collet body from moving to one end side. The method of claim 10, The second fixing means includes a mounting groove circumferentially formed on an outer circumferential surface of the driver body portion, and a portion of the collet body detachably inserted into and inserted into the mounting groove contacts the other end of the collet body so that the collet body moves to the other end side. Driver for orthodontic screw treatment, characterized in that the elastic body to prevent the thing. The method of claim 12, The elastic body is a screw for orthodontic screw treatment, characterized in that the elastic ring made of a fluorine rubber material.

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