KR20110027461A - Stopper unit for implant drill and drill for operating implant having the same - Google Patents

Abstract

PURPOSE: A stopper unit for an implant drill and a drill for operation of an implant are provided to enable a surgical operator to easily control the drilling depth of a drill body during implant operation. CONSTITUTION: A drill(100) for operation of an implant comprises a drill body(111) and a stopper unit(130). The stopper unit is attachably and detachably combined with the drill body and restricts implantation depth of the drill body when the drill body is implanted and a hole is punched in the alveolar bone. The stopper unit comprises a drive stopper which is movably arranged and a fixed stopper which is fixed to a predetermined position.

Description

STOPPER UNIT FOR IMPLANT DRILL AND DRILL FOR OPERATING IMPLANT HAVING THE SAME}

The present invention relates to an implant drill stopper unit and an implant treatment drill having the same, and more particularly, to a simple structure, the implanter can easily adjust the depth of drilling of the drill body during the implant procedure, thereby providing a convenient and safe procedure. The present invention relates to a stopper unit for an implant drill and an implant treatment drill having the same, which can induce a drilling operation corresponding to various depths of implantation as well as more accurately and efficiently.

Implants are originally meant to be a substitute for recovery when tissue is lost, but in dentistry, implants are made of artificial teeth. In order to replace the lost root (root), a tooth root made of titanium (titanium), which is not rejected by the human body, is planted in the alveolar bone where the tooth falls out, and the artificial tooth is fixed to restore the function of the tooth. In the case of general prosthetics or dentures, the surrounding teeth and bones are damaged after time, but the implants do not damage the surrounding dental tissues, and they have the advantage that they can be used semi-permanently because they have the same function or shape as natural teeth and do not cause tooth decay.

The implant procedure is completed by drilling a placement position using a predetermined drill, placing the implant in the alveolar bone, fusion fusion to the bone, and then joining the abutment to the implant, and then covering the abutment with the final prosthesis.

These implants enhance the function of dentures, improve the aesthetics of dental prosthetic restorations, as well as dissipate excessive stress on surrounding supportive bone tissue, as well as single missing restorations. And also helps stabilize the dentition.

On the other hand, since the implant is placed after drilling the alveolar bone of the patient using a drill or the like, drilling of the alveolar bone is also very important.

Here, for example, briefly described with respect to the drilling operation of the drill for implantation as follows. Such a drilling operation as an example may be a variety of drilling operations, of course.

First, determine the placement of the implant on the surface of the alveolar bone, and then cut open the upper part of the alveolar bone at the site where the tooth is lost, and then open it slightly, depending on the bone density or the skeleton of the patient with a rotary instrument such as a dental hand piece. A drill of a suitable diameter is mounted to drill a hole of a predetermined depth while supplying water to the alveolar bone.

The hole is then expanded using a tap drill, and then a thread is formed in the hole.

Then, the implant (or fixture) is coupled to the threaded screw hole using a predetermined mechanism, and then the abutment is fastened to the implant to fix the artificial tooth to the abutment using an adhesive.

However, in the related art, when the drilling operation for the implant operation is performed, the operator sees the scale or the groove marked on the dental drill and drills while measuring the depth of drilling, which is not only easy to perform the procedure, but also precisely adjusts the implantation depth or various implantation depths. It was difficult to cope with the problem, and in particular, it has been difficult to induce a safe procedure since the drilling operation has been performed depending on the experience or skill of the operator.

The object of the present invention is a simple structure, the operator can easily adjust the drilling depth of the drill body during the implant procedure, not only to induce a convenient and safe procedure, but also to perform a drilling operation corresponding to various implantation depths more precisely than before. An implant drill stopper unit that can be efficiently performed and an implant treatment drill having the same are provided.

The above object, according to the present invention, a drill body; And a stopper unit detachably coupled to the drill body and including a stopper unit to limit the depth of insertion of the drill body when the drill body is implanted and a hole is drilled in the alveolar bone.

The stopper unit may include a movable stopper disposed to be adjustable in the drill body along a direction in which the drill body is placed in the alveolar bone; And a fixed stopper fixed at a predetermined position of the drill body together with the movable stopper when the movable stopper is coupled to the movable stopper.

The fixed stopper may include a fixed stopper body having an insertion hole inserted into the drill body; And a plurality of wings connected to the fixed stopper body so as to be deformable inward in the radial direction of the fixed stopper body and fastened to the movable stopper and spaced apart from each other.

The plurality of wings may be arranged at equiangular intervals along the circumferential direction.

The insertion hole may be substantially the same as the cross-sectional shape of the drill body.

The inner surface of the movable stopper may be provided to reduce the radius toward the upper side in the longitudinal direction of the drill body.

The movable stopper may have a ring shape, and threads may be formed on the inner circumferential surface of the movable stopper and the outer circumferential surface of the fixed stopper, respectively.

The screwing direction of the threads formed in the movable stopper and the fixed stopper may be the same as the driving rotation direction of the drill body.

At least one insertion depth display pattern indicating an insertion depth of the drill body inserted into the alveolar bone may be further formed on a surface of the drill body.

The drill body has a plurality of cutting edges are formed recessed from the outer circumferential surface, the insertion depth display pattern is formed at regular intervals in the longitudinal direction of the cutting edge, but recessed radially on the surface of the cutting edge It may be a plurality of display grooves formed.

According to the present invention, the drill body is detachably coupled to the drill body, the drill body is implanted stopper unit for limiting the depth of implantation of the drill body when the hole is drilled in the alveolar bone, the drill body A movable stopper disposed in the drill body in a direction in which the alveolar bone is placed; And a fixed stopper which is fixed at a predetermined position of the drill body together with the movable stopper upon engagement with the movable stopper.

The fixed stopper may include a fixed stopper body having an insertion hole inserted into the drill body; And a plurality of wings connected to the fixed stopper body so as to be deformable inward in the radial direction of the fixed stopper body and fastened to the movable stopper and spaced apart from each other.

The inner surface of the movable stopper may be provided to reduce the radius toward the upper side in the longitudinal direction of the drill body.

The movable stopper may have a ring shape, and threads may be formed on the inner circumferential surface of the movable stopper and the outer circumferential surface of the fixed stopper, respectively.

As a simple structure, the operator can easily adjust the drilling depth of the drill body during the implantation procedure, not only to induce a convenient and safe procedure, but also to perform a drilling operation corresponding to various implantation depths more accurately and efficiently than before. .

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a perspective view of an implant treatment drill according to an embodiment of the present invention, Figure 2 is a front view of Figure 1, Figure 3 is a left side view of Figure 2, Figure 4 is an exploded perspective view of Figure 1, Figure 5 is Front sectional drawing of a movable stopper, FIG. 6 is a front view of a fixed stopper, and FIG. 7 is a top view of FIG.

As shown in these drawings, the implant 100 for the implant procedure according to the present embodiment is formed in the drill body 111 and the drill body 111, the alveolar bone (not shown) by the rotation of the drill body 111 Removably coupled to the plurality of cutting edges 112 and the drill body 111 to drill a hole in the hole), the drill body 111 is implanted and drilled when the hole is drilled in the alveolar bone (not shown) It includes a stopper unit 130 for limiting the implantation depth (D) of the body (111).

1 to 4, the cutting edge 112 provided from the one end portion 113 to a predetermined region in the longitudinal direction has a cylindrical shape and is integrally formed with the drill body 111 in the drill body 111. do. Accordingly, when the drill body 111 and the cutting edge 112 are rotated about the longitudinal axis during the drilling, the drilling operation proceeds.

At the other end of the drill body 111, that is, at the opposite end of the one end 113 of the drill body 111 on which the cutting edge 112 is formed, a rotating mechanism such as, for example, a dental hand piece. The shank part 116 connected to is provided. The shank portion 116 is detachably coupled to a hand piece to rotate the entire drill 100 for the implant procedure.

The cutting edge 112 is formed at one end of the drill body 111 to a predetermined length, and is provided by recessing a predetermined depth from the surface of the drill body 111 along a longitudinal direction of the drill body 111. In this way, the predetermined areas are formed in the recessed depth from the surface of the drill body 111 is a bone discharge path 115. And the tip 114 of the cutting edge 112 is processed sharply in the form of a blade to facilitate the drilling.

The cross-sectional shape of the cutting edge 112 may be provided in various ways, but in this embodiment, as shown in FIGS. 1 to 4, the cutting edge 112 has four cutting edges 112 and is provided to enable cutting when rotating in one direction. .

As described above, the bone discharge passage 115 formed between the cutting edges 112 is recessed in a predetermined depth from the surface of the drill body 111 side by side along the longitudinal direction of the drill body 111. The bone discharge path 115 serves as a plurality of discharge paths through which bone fragments of the alveolar bone (not shown) to be punctured are discharged. Thus, the bone discharge path 115 may smoothly discharge the bone to be cut at the time of drilling to the outside to remove impurities in the bone during drilling and to suppress heat generation.

On the surface of the cutting edge 112, at least one insertion depth display pattern 117 indicating the insertion depth D of the cutting edge 112 is formed. In the present embodiment, the display pattern 117 is formed at regular intervals in the longitudinal direction of the cutting edge 112, as shown in FIGS. 1, 2, and 4, but on the surface of the cutting edge 112. Is provided with a plurality of display grooves 117 recessed in the radial direction.

Here, the plurality of display grooves 117 formed on the cutting edge 112 serves as an assistant to smoothly position the stopper unit 130 at a position corresponding to a desired depth of implantation (D). The operator can easily grasp the position of the stopper unit 130 from the position information of the display groove 117, and it is advantageous in that the depth of insertion D can be more easily determined.

On the other hand, the stopper unit 130 is detachably coupled to the drill body 111, the insertion depth (D) of the drill body 111 when the drill body 111 is implanted and a hole is drilled in the alveolar bone (not shown) Restrict In other words, the cutting edge 112 of the drill body 111 is inserted into the jawbone and serves to limit the implantation depth (section D of FIG. 2) to be drilled.

The stopper unit 130 includes a ring-shaped movable stopper 131 and a fixed stopper 136 coupled with the movable stopper 131.

As shown in FIG. 5, the movable stopper 131 is formed in a ring shape, and a hollow 133 in the longitudinal direction is formed therein.

The hollow 133 diameter at the bottom of the movable stopper 131 is provided to substantially match the outer diameter of the wing 139 of the fixed stopper 136, as shown in FIGS. And the diameter of the hollow 133 of the movable stopper 131 decreases toward the upper side.

That is, the outer diameter of the wing portion 139 of the fixed stopper 136 is about 0.01 mm larger than the diameter of the point 7/8 (A of FIG. 5), which is the maximum diameter of the hollow 133 of the movable stopper 131. , The diameter is configured to decrease toward the upper side (see dashed line in FIG. 5). Therefore, when the wing portion 139 of the movable stopper 131 and the fixed stopper 136 is coupled, the movable stopper 131 may be rotated along the thread 132 while pressing downward to be coupled. As the movable stopper 131 is coupled to the fixed stopper 136, the outer diameter of the wing 139 of the fixed stopper 136 is reduced in correspondence to the diameter of the hollow 133 of the movable stopper 131. The fixed stopper 136 is more tightly to be able to be fixed to. Due to this, there is an effect that the wedge is coupled between the drill body 111 and the fixed stopper 136.

The diameter of the hollow 133 of the movable stopper 131 increases from the upper side to the lower side, and the hollow 133 having the maximum diameter is formed at the point 7/8 (A in FIG. 5), and the diameter is reduced again. Has

As the outer diameter of the wing 139 of the fixed stopper 136 is made relatively larger than the diameter of the hollow 133 of the movable stopper 131 and is forcibly coupled, the movable stopper 131 is pushed upward, and the fixed stopper ( The force that pushes 136 down will act. Due to the shape of the lower end portion (section B of FIG. 5) of the movable stopper 131, the phenomenon of separation between the fixed stopper 136 and the movable stopper 131 is prevented.

The thread 132 is formed in the inner peripheral surface of the movable stopper 131, and the cross-sectional shape of the thread 132 in the longitudinal direction is formed in an arc shape in this embodiment. Alternatively, in order to increase the coupling force between the movable stopper 131 and the fixed stopper 136, the shape of the thread may be a gear shape.

The fixed stopper 136 includes a fixed stopper body 137 and a plurality of wings 139 which are moved inside the movable stopper 131 and fastened to the movable stopper 131 and are spaced apart from each other.

As shown in FIGS. 6 and 7, the fixed stopper body 137 has an insertion hole 138 connected to the hollow 133 of the movable stopper 131 in the longitudinal direction. The cross-sectional shape of the insertion hole 138 corresponds to the cross-sectional shape of the cutting edge 112 of the drill body 111, that is, is formed substantially the same as the cross-sectional shape of the drill body 111 is inserted into the drill body 111 When the fixed stopper body 137 and the cutting edge 112 of the drill body 111 is fitted to each other. Thus, the fixed stopper 136 does not rotate on the drill body 111.

The plurality of wings 139 are connected to the fixed stopper body 137 and are arranged at equal angle intervals along the circumferential direction. In the present embodiment, the wing portion 139 divided into four parts at an angle of 90 degrees is provided.

However, since the scope of the present invention is not limited thereto, the number of wings may be appropriately changed. The number of the wings may be divided into three, five, or more parts. When the number of the wings is different, the fastening force of the movable stopper 131 and the fixed stopper 136 may be changed.

A thread is formed on the outer surface of the wing portion 139 of the fixed stopper 136, and is screwed together with the thread 132 on the inner surface of the movable stopper 131. One side of the plurality of wings 139 is connected to the fixed stopper body 137 and the other side is separated from each other.

The role of the wing 139 facilitates elastic deformation of the fixed stopper 136 upon engagement between the fixed stopper 136 and the movable stopper 131. The wing 139 is formed with a relatively larger outer diameter of the wing 139 than the diameter of the hollow 133 of the movable stopper 131. As a result, the fixed stopper 136 is coupled to the movable stopper 131 while the wing portion 139 is deformed. At this time, the wing portion 139 withstands the pressing force applied toward the center of the shaft and is deformed without damage, and the outer surface of the wing portion 139 is movable stopper 131 due to the restoring force in the radial direction of the wing portion 139. It is in close contact with the inner surface of the).

Through this configuration, the stopper unit 130 is fixed at a predetermined position of the drill body 111 to be integrally coupled with the drill body 111, so that the operator can easily position the drilling depth 111 of the drill body 111. There is an advantage to figure out.

In addition, the stopper unit 130 is detachably coupled to the drill body 111 to easily change the stopper unit 130 fixed at an arbitrary position to any other point of the drill body 111. To this end, when the movable stopper 131 is rotated in a direction opposite to the rotation direction of the drill 100, the fixed stopper 136 can be easily separated from the movable stopper 131, and the movable stopper 131 is drilled into the drill body 111. Repositioning the movable stopper 131 in the direction of rotation of the drill with respect to the fixed stopper 136 and then, the movable stopper 131 and the fixed stopper 136 are coupled to each other and the stopper unit 130 is positioned. ) Can be fixed.

Thus, the stopper unit 130 can be easily fixed to the desired position of the drill body 111. Therefore, it is possible to perform a drilling operation of various insertion depth (D).

On the other hand, the screw coupling direction between the movable stopper 131 and the fixed stopper 136 is provided to be the same as the drive rotation direction of the drill body 111, which is attached and fixed to the drill body 111 as the drill is driven and rotated This is to prevent the stopper unit 130 from being separated.

By this configuration, a brief description of the drilling operation using the drill 100 for implanting the implant in the missing tooth as follows.

First, the operation of setting the implantation depth (D) according to the alveolar bone and bone quality of the patient is preceded. As a result, the stopper unit 130 is positioned at the set depth D. In detail, the drill body 111 is inserted into the hollow of the movable stopper 131, and then the drill body 111 is inserted into the insertion hole of the fixed stopper 136.

Next, the movable stopper 131 and the fixed stopper 136 are coupled to a predetermined position of the drill body 111 corresponding to the preset implantation depth D. FIG. The end of the fixed stopper body 137 is positioned to correspond to the implantation depth (D), and then the stopper unit 130 is coupled while rotating the movable stopper 131 downward.

Next, after determining the implantation position of the implant on the surface of the alveolar bone (not shown), by cutting the upper end of the alveolar bone (not shown) of the site where the tooth is lost, slightly open, using a drill equipped with a stopper unit 130 While supplying water to the alveolar bone (not shown), a hole having a depth of insertion D is drilled.

On the other hand, the bone debris generated during the drilling operation through the bone discharge path 115 is discharged.

Thereafter, a thread (not shown) is formed in the hole while supplying water to the alveolar bone (not shown) using a tab drill (not shown).

Then, using a tool such as a dental hand piece, a fixture (not shown) is coupled to the threaded hole (not shown) and bone fused for a period of time, and then the abutment (not shown) is attached to the fixture (not shown). (Not shown) to fix the artificial tooth to the abutment using an adhesive, thereby completing the implant procedure.

As such, before the operator drills the hole in the alveolar bone, the stopper unit 130 formed in the drill body 111 is set in advance so that the operator can easily adjust the depth of drilling for implanting the implant, thereby providing a convenient and safe operation. Can be induced. This makes it easier for beginners to perform implant procedures, as well as to drill perforations corresponding to various depths of implantation.

8 is a top view of the fixed stopper of the stopper unit according to the second embodiment of the present invention.

As shown in this figure, the drill for implant surgery according to the present embodiment is almost the same as the implant drill (100, see Figs. 1 to 4) described in the first embodiment will be omitted redundant description, Only parts different from the first embodiment will be described.

The cutting edge (not shown) of the drill body (not shown) in the drill for implant treatment (not shown) according to the present embodiment has three cutting edges (unlike the cross-sectional shape of the cutting edge 112 in the first embodiment). Not shown) and have a substantially triangular shape. The operator may select the shape of the cutting edge in consideration of various variables such as the diameter of the hole to be drilled, the cutting force, and the bone density of the bone.

Since the fixed stopper body 237 is fitted and fixed to the shape of the cutting edge (not shown), the cross-sectional shape of the insertion hole 238 of the fixed stopper body 237 is a cutting edge (not shown). Corresponding to the cross-sectional shape of the si) is provided in a substantially triangular shape.

Meanwhile, in the present embodiment, four wing portions 139 are formed on the fixed stopper 136, but five or more wing portions may be formed to increase the coupling force of the stopper unit 130.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 is a perspective view of a drill for implant surgery according to an embodiment of the present invention.

2 is a front view of FIG. 1.

3 is a left side view of FIG. 2.

4 is an exploded perspective view of FIG. 1.

5 is a front sectional view of the movable stopper.

6 is a front view of the fixed stopper.

7 is a top view of FIG. 6.

8 is a top view of the fixed stopper of the stopper unit according to the second embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: drill for implant treatment 111: drill body

112: cutting edge 116: shank portion

130: stopper unit 131: movable stopper

136: fixed stopper 137: fixed stopper body

139: wing

Claims (14)

Drill body; And Removably coupled to the drill body, the drill body is implanted drill comprising a stopper unit for limiting the depth of insertion of the drill body when the hole is drilled in the alveolar bone. The method of claim 1, The stopper unit, A movable stopper disposed on the drill body in a position in which the drill body is placed in the alveolar bone; And And a fixed stopper fixed together at the predetermined position of the drill body together with the movable stopper when the movable stopper is coupled to the movable stopper. The method of claim 2, The fixed stopper, A fixed stopper body having an insertion hole inserted into the drill body; And And a plurality of blade openings connected to the fixed stopper body so as to be deformable radially inwardly of the fixed stopper body, the plurality of blade openings being coupled to the movable stopper and spaced apart from each other. The method of claim 3, The plurality of wing parts are implants for implant treatment, characterized in that arranged at equal intervals between each other in the circumferential direction. The method of claim 3, The insertion hole is an implant treatment drill, characterized in that substantially the same as the cross-sectional shape of the drill body. The method of claim 2, The inner surface of the movable stopper is implant for drill, characterized in that the radius is provided to decrease toward the upper side in the longitudinal direction of the drill body. The method of claim 2, The movable stopper has a ring shape, and a thread is formed on an inner circumferential surface of the movable stopper and an outer circumferential surface of the fixed stopper, respectively. The method of claim 7, wherein And a screw engagement direction of the threads formed in the movable stopper and the fixed stopper is the same as the driving rotation direction of the drill body. The method of claim 1, At least one insertion depth display pattern for displaying the insertion depth of the drill body is inserted into the alveolar bone is formed on the surface of the drill body implant treatment. 10. The method of claim 9, The drill body is formed with a plurality of cutting edges recessed from the outer peripheral surface, The insertion depth display pattern is a drill for implant treatment, characterized in that formed in a predetermined interval in the longitudinal direction of the cutting edge, a plurality of display grooves recessed in the radial direction on the surface of the cutting edge. A stopper unit for an implant drill, which is detachably coupled to a drill body and restricts the depth of insertion of the drill body when the drill body is placed and a hole is drilled in the alveolar bone, A movable stopper disposed on the drill body in a position in which the drill body is placed in the alveolar bone; And And a fixed stopper fixed together at the predetermined position of the drill body together with the movable stopper when the movable stopper is coupled to the movable stopper. The method of claim 11, The fixed stopper, A fixed stopper body having an insertion hole inserted into the drill body; And And a plurality of wings connected to the fixed stopper body so as to be deformable radially inwardly of the fixed stopper body and fastened to the movable stopper and spaced apart from each other. The method of claim 11, The inner surface of the movable stopper is a stopper unit for an implant drill, characterized in that the radius is reduced toward the upper side in the longitudinal direction of the drill body. The method of claim 11, The movable stopper has a ring shape, and a thread is formed on an inner circumferential surface of the movable stopper and an outer circumferential surface of the fixed stopper, respectively.

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