KR100993666B1 - Fixation pin assembly using in manufacturing an implant-stent for accurate guided insertion - Google Patents

Fixation pin assembly using in manufacturing an implant-stent for accurate guided insertion Download PDF

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KR100993666B1
KR100993666B1 KR20080093588A KR20080093588A KR100993666B1 KR 100993666 B1 KR100993666 B1 KR 100993666B1 KR 20080093588 A KR20080093588 A KR 20080093588A KR 20080093588 A KR20080093588 A KR 20080093588A KR 100993666 B1 KR100993666 B1 KR 100993666B1
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pin assembly
bushing
fixing pin
stent
implant
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KR20080093588A
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Korean (ko)
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KR20100034447A (en
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이태경
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이태경
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Priority to PCT/KR2009/005467 priority patent/WO2010036045A2/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/002—Means or methods for correctly replacing a dental model, e.g. dowel pins; Dowel pin positioning means or methods

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  • Oral & Maxillofacial Surgery (AREA)
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Abstract

The present invention relates to a fixing pin assembly used in the manufacture of an implant stent for precision induction, the fixing pin assembly is anchor and screw pins, and plug head and the screw pin and freely assembled and separated by screwing And an induction bushing fixed between the plug heads.

Fixing pin assembly of the present invention having such a configuration, the gypsum model used in the manufacture of the implant stent as well as the implant is used for the production of the implant stent, which is an auxiliary device for precisely inducing the direction and depth of the drill drilling the alveolar bone The abutment and artificial crown can be used as a base for pre-simulation or adjustment before placing it directly on the subject.

Implants, Stents for Implants, Guide Bushings, Drills, Perforations, Locking Pin Assemblies

Description

Fixation pin assembly using in manufacturing an implant-stent for accurate guided insertion}

The present invention relates to a fixing pin assembly used in the manufacture of the implant stent for precise induction placement, in particular the induction bushing to precisely induce the direction and depth of the drill for drilling the alveolar bone during the implant placement operation accurately positioned inside the implant stent Not only can it be used as an aid to guide, but also after the fabrication of the implant stent is completed, it can be used as a base for pre-simulating or adjusting the implant abutment and artificial crown before placing it directly on the subject. And a pin assembly as an aid for implant placement.

Implant is a prosthesis used to replace a badly damaged tooth. An artificial tooth root made of a special metal (usually titanium or titanium alloy) is implanted in the jaw bone and fixed by tangling with the bone. By using artificial teeth to form a general dental procedure that allows you to live a daily life with almost the same sense as your own teeth.

Compared to the treatment method using dentures and bridges, such implants have a long life and are very similar to natural teeth, without damaging the surrounding teeth except for the teeth that need to be treated. It is a procedure.

Such an implant is first incised to gingiva (gum) of the patient to be implanted to expose the alveolar bone. Next, the position of the implant to be inserted among the exposed alveolar bones is determined, and a predetermined position of the alveolar bone is drilled using a drilling tool such as a drill at the position to form a perforation in which the fixture, which is the foundation of the implant, is placed. .

After the implanted fixture is fully coupled to the alveolar bone, the abutment is connected to the fixture, the artificial tooth is coupled to the abutment, and the implant installation is completed by covering the gingival.

In the treatment of such an implant, the task that determines the successful placement of the implant can be said to be the drilling of the groove in which the fixture is to be implanted in the alveolar bone. In order to expect successful implantation, the implantation position, depth and direction must be determined in consideration of various factors such as the overall condition of the patient's teeth, the position of the teeth requiring implantation, and the condition of the patient's alveolar bone. If the alveolar bone perforation, which is a step, is not satisfactory, the implantation position, orientation, and depth of the originally planned implant cannot be satisfied.

Unfortunately, this drilling work for alveolar bone drilling is difficult for beginners as well as experienced users to accurately measure depth and direction in the process. Especially for beginners who are not experienced in the procedure, it is very difficult to measure the drilled depth without any special measuring step during the procedure.

In addition, when drilling a groove for placing a fixture into the alveolar bone, the operator may apply a force to the drill to drill the drilling operation to a certain depth because it is not easy to determine to what extent the drilling operation is currently performed. If you drill beyond the drill may damage the nerves distributed in the alveolar bone.

 On the contrary, if the drilling operation is terminated before reaching the predetermined drilling depth, the drilled groove is shallow in depth, and excessive force is required to fix the fixture, which causes damage to the thread around the groove or the fixture to be fixed in the groove. The problem is that the fixture will not be completely fixed and you will have to retry later.

In order to solve this problem, in case of implantation of the gingival bone and exposing the alveolar bone and then drilling by using a direct drill on it, a stent to accurately determine the exact position and direction to perform the drilling operation An assistive device called

The manufacturing process and use method of the stent conventionally used are as follows.

First, before the implant procedure, the upper and / or lower jaw of the subject is obtained using a rubber impression material, and then plaster is poured on the same to form the upper and / or lower jaw of the subject. Make a plaster model.

This is then coupled to an artificial articulator to reproduce outside the oral cavity of the jaw joints and the upper and lower teeth, almost similar to those of the subject.

Subsequently, the tooth is lost and a virtual tooth model is made of a transparent material at the position where the implant is to be treated, which is used as a stent.

In this way, a predetermined mark is placed at the position where the drill is to be inserted among the completed stents, a mark indicating the direction to be drilled on the outside of the stent, and the operator drills using a drilling tool such as a drill with reference to the mark and the marking. Will do the work.

However, such a conventional stent is very unstable to secure the stability in the vertical or horizontal direction during the punching operation for the dental or edentulous operator in contact with the inner surface.

Accordingly, the present applicant, as shown in FIG. 1, has applied for the invention related to the stent in which the stent induction part 23 is fixed to the body part 1 as a patent application No. 2007-0107408 dated October 24, 2007. Also, the implant placement guide device shown in FIG. 2 used in the present inventor's stent has been filed as a patent application No. 2008-0037614 dated April 23, 2008.

The diameter of the inner circumferential surface of the stent induction part 23 fixed to the stent of the present applicant corresponds to the outer diameter of the cylindrical induction part provided in the drill, and the stopper is integrally formed on the lower surface of the main surface of the stent induction part 23. Perforation depth is limited.

Therefore, the perforation direction (angle) and depth of the alveolar bone are determined according to the dental condition of the subject, for example, the size of the tooth requiring implant treatment, the thickness of the gingiva covered over the alveolar bone, and the condition of the alveolar bone. 23), the alveolar bone is drilled in the correct direction and depth by the drill.

As described above, according to the applicant's prior patent application, the accuracy of the angle and depth of the hole drilled in the alveolar bone for the implantation procedure is significantly improved compared to the conventional methods without being greatly affected by the skill of the operator. It has been found that there are additional considerations.

First, the stent induction part 23 fixed to the stent of the present inventors plays an important role in determining the drilling depth and direction of the drill. In order for the function of the stent induction part 23 to be sufficiently exerted, the stent induction part 23 At the point and at the intended angle, the stent guide 23 must be positioned and fixed. Therefore, by placing the stent guide 23 at the exact point on the gypsum model of the subject to be a stent manufacturing frame, an auxiliary mechanism is needed to help the stent guide 23 to be accurately embedded in the stent as previously planned. Do.

Second, in consideration of the entire procedure of the implant procedure, the assistive device is not only used for the preparation of the implant stent necessary for the alveolar bone perforation, but the implant made of the fixture, the abutment and the artificial crown is actually placed in the patient correctly. It is more desirable to extend its use so that it can also be used for preliminary adjustments. This is not only desirable in terms of reducing the procedure cost by greatly increasing the probability that the implant placement will be completed successfully in a single procedure, but also in the psychological burden of the subject who feels negative emotions such as fear and pain in the implant procedure. This is because it is also preferable in that it can greatly reduce.

Third, although not related to the auxiliary device itself, the matter to be improved in that the stent induction part 23 (hereinafter referred to as the terminology bushing) supported by the auxiliary device is a component connected to the auxiliary device. May be considered. The role of the guide bushing is, as described above, the diameter of the inner peripheral surface is formed in a size corresponding to the outer diameter of the guide portion provided in the drill, the stopper is integrally formed on the lower surface of the inner peripheral surface in contact with the lower surface of the guide portion of the drill By preventing further ingress, the drilling depth of the drill is limited.

However, the configuration of the stopper can only limit the longitudinal movement of the drill, and likewise, the tab is guided to the guide bushing to form a thread in the perforated hole or the thread is simultaneously screwed into the hole. It can only limit the longitudinal movement of the fixture. This is not a problem during drilling of the drill, but failure to properly limit it in the case of rotational movement for forming or screwing can cause a fatal problem in that the screw structure may be broken. . In other words, the integrity of the thread structure is not maintained because it means that the implant is not firmly anchored to the alveolar bone. Therefore, the guide bushing should be provided with the stopper to be able to properly limit the rotation of the tab or fixture.

Finally, the recess of the gingival of the implant to be implanted is often narrow in the front and rear direction, in which case the auxiliary device and the guide bushing may not be inserted to a sufficient depth due to interference with the gingival. Therefore, it is more preferable that the appearance of the auxiliary device and the guide bushing has a structure that can be sufficiently inserted even when the recessed portion of the gingiva is narrow.

Fixing pin assembly used in the production of the implant stent according to the present invention, the cylindrical body is an anchor formed with a first female screw portion in the inner central portion; and the body of the cylindrical body, the first male screw portion formed on one end of the body, A screw pin having a second male screw portion formed at the other end of the body and a plate-shaped stepped portion formed between the body and the second male screw portion, wherein the first male screw portion can be screwed to the first female screw portion of the anchor; And a body of a cylindrical body, a second female screw portion formed at a center portion of the lower end of the body, and a head portion formed to be stepped on an upper end of the body so as to be larger than an outer diameter of the body, wherein the second female screw portion is formed of the screw pin. It comprises a; a plug head that can be screwed to the male thread portion.

And the fixing pin assembly having the configuration as described above, the induction bushing is made of a body having an elliptic cylinder shape has a through hole having a circular cross-section along the longitudinal direction of the elliptic cylinder; The diameter of the through-hole formed in the induction bushing corresponds to the outer diameter of the plug head body, and the induction bushing is inserted into the second male threaded portion so that the bottom surface thereof is supported by the stepped portion of the screw pin. The induction bushing is fixed between the screw pin and the plug head by pressing the upper surface of the induction bushing by the head of the plug head screwed into the second male threaded portion while being inserted into the hole. Preferably, the planar shape of the stepped portion of the screw pin corresponds to the ellipsoidal shape of the induction bushing.

Grooves may be formed along the periphery of the anchor, and at least one flat surface may be formed on the outer circumferential surface of the anchor. At this time, it is more preferable that the outer diameter of the anchor and the outer diameter of the screw pin cylinder is the same.

The length of the body of the plug head may be the same as the height of the induction bushing, wherein the lower end of the body is formed with a stepped shaft diameter inwardly, the length of the shaft diameter portion from the bottom surface of the induction bushing It is longer than the length to the point where the stopper is formed.

In addition, the length of the body of the plug head may be formed differently from the height of the induction bushing, wherein the length of the body of the plug head is equal to the length from the upper surface of the induction bushing to the point where the stopper is formed. Keep it short.

And the center of the head of the plug head is preferably formed with a hexagonal column groove that can be fitted into the hexagon wrench.

The bottom surface of the through-hole of the induction bushing may be provided with a stopper having a stepped edge, and a flat portion is formed on a portion of at least one side of both sides of the long axis of the ellipsoidal surface of the body having an elliptic cylinder shape of the induction bushing. In addition, a coolant hole may be formed on at least one side of both sides of an ellipsoidal long axis direction of the body having an ellipsoidal cylinder shape of the induction bushing.

In particular, at least one auxiliary screw thread may be formed on the upper inner circumferential surface of the through hole formed in the induction bushing, and the pitch of the auxiliary screw thread may be formed on the surface of a mechanism guided by the through hole, for example, a tab or fixture fixture. It is equal to the pitch of the male thread formed.

The auxiliary screw acid is suitably formed three at equal intervals of 120 °, wherein the plurality of auxiliary screw acid is preferably formed by one rotation each.

A concave fixing part is formed on both sides of the ellipsoidal long axis of the upper surface of the body having an elliptic cylinder shape of the induction bushing, and a protrusion having a diameter equal to the through hole of the induction bushing is formed through and coupled to the fixing part. It may further include an extension bushing formed on the lower surface.

Fixing pin assembly used in the manufacture of the implant stent according to the present invention having the above configuration has the following effects.

First, the induction bushing fixed in the implant stent of the present applicant can be positioned at the correct point in the stent by the fixing pin assembly. This is because the fixing pin assembly of the present invention can locate the guide bushing at the correct point on the plaster model of the subject to be the base frame for manufacturing the stent.

Second, because the fixing pin assembly of the present invention is to be able to separate the screw pin in the state of leaving only the anchor in the gypsum model of the subject, the graft model in which the anchor is embedded, the implant consisting of fixture, abutment and artificial crown It can be used as a base to allow the user to adjust it in advance so that it is correctly placed. Therefore, since all processes from alveolar bone perforation to implant placement are done through one gypsum model, the possibility of implantation being successfully implanted into the subject is greatly improved, and also implantation is directly placed on the subject. Since the procedure can be preliminarily tested through the plaster model, the psychological and physical burden of the subject can be greatly reduced, and the overall time required for the procedure can be shortened.

Third, the guide bushing adopted in the present invention includes at least one auxiliary screw thread on the upper surface of the inner circumferential surface of the through hole, and the screw thread is formed in the tab or the hole guided by the guide bushing to form a thread in the hole drilled in the alveolar bone. It is possible to effectively limit the amount of rotation of the fixture to be combined while forming. Therefore, the induction bushing of the present invention has the effect of ensuring the integrity of the thread structure formed in the alveolar bone.

Finally, since the induction bushing of the present invention is composed of a body having an elliptic cylinder shape, the induction bushing of the implant stent can effectively prevent the phenomenon of rotating together with the high-speed rotation of the drill. The shaped body has an excellent effect in that the guide bushing can be sufficiently inserted even when the concave portion of the gingiva is narrow.

Hereinafter, with reference to the accompanying Figures 2 to 8, it describes an embodiment of the fixing pin assembly 10 used in the manufacture of the stent for implants for precision induction according to the present invention.

2 is a perspective view and a partial perspective view of the fixing pin assembly 10 according to the present invention, in particular the state in which the induction bushing 400 for guiding the angle (direction) and depth of the hole drilled in the alveolar bone precisely coupled It is shown.

Figure 3 shows the disassembled state of each component constituting the fixing pin assembly 10, as shown in Figure 3, the fixing pin assembly 10 of the present invention is inserted into the plaster model that is modeled after the mouth of the subject An anchor 100 supporting the entire fixing pin assembly 10, a screw pin 200 detachably formed on the anchor 100, and a plug head 300 detachably attached to the screw pin 200. ) In other words, the fixing pin assembly 10 of the present invention is composed of three removable components, the anchor 100, the screw pin 200, and the plug head 300. Is the same as

4 is a view showing the anchor 100 in detail, the anchor 100 is a cylindrical body having a first female threaded portion 102 is formed in the inner center portion thereof. The first female screw portion 102 is freely detachable by screwing with the first male screw portion 204 of the screw pin 200 to be described later.

A circular groove 104 is formed in the lower portion of the anchor 100 along the circumference thereof, and the groove 104 is inserted with an anchor 100 coated with an adhesive material in a hole prepared in a plaster model. After hardening, it is made to prevent the anchor 100 from moving up and down, that is, along the longitudinal direction of the inserted hole.

In addition, at least one flat surface 106 is formed on an outer circumferential surface of the anchor 100. Similar to the groove 104, the anchor 100 is cured after the adhesive material applied to the anchor 100 is cured. It is designed to prevent rotation along the circumferential direction. Preferably, the flat surface 106 is suitably formed in one side, that is, two on both sides of the outer peripheral surface of the anchor 100.

In addition, the closed end 108 of the anchor 100 (the end of which the first female threaded portion is not formed) preferably has a conical or truncated cone shape. This is to secure a sufficient contact area in accordance with the seat shape.

5 is a view illustrating the screw pin 200 in detail, the screw pin 200 is a body 202 of the cylindrical body, the first male screw portion 204 formed on one end of the body 202, A second male threaded portion 206 formed at the other end of the body 202 and a plate-shaped stepped portion 208 formed between the body 202 and the second male threaded portion 206 are provided.

As mentioned above, the first male screw portion 204 formed at one end of the screw pin 200 is screwed to the first female screw portion 102 of the anchor 100 to be detachable. In addition, the second male screw portion 206 is screwed to the second female screw portion 304 of the plug head 300, as will be described later. Therefore, the screw pin 200 of the present invention serves as a bridge to connect the anchor head 100 and the plug head 300 disposed at both ends of the fixing pin assembly 10, in particular the screw pin 200 is anchor ( It should be noted that only the screw pin 200 and its superstructure can be removed while maintaining the anchor 100 embedded in the gypsum model, since it can be detached from the base 100. In detail). And the outer diameter of the anchor 100 and the screw pin 200, the outer diameter of the body 202 is preferably the same, which is fixed when the fixing pin assembly 10 in the hole formed in the gypsum model anchor 100 Since the whole and a part of the body 202 of the screw pin 200 are stuck in the gypsum, the outer diameter of the anchor 100 and the outer diameter of the body of the screw pin 200 body 202 for easy removal of the screw pin 200. This is because the same thing is good.

FIG. 6 is a view illustrating the plug head 300 in detail, wherein the plug head 300 has a cylindrical body 302 and a second female threaded portion 304 formed at a center portion of the lower end of the body 302. And a head 306 formed to be stepped on an upper end of the body 302 to be larger than an outer diameter of the body 302. Here, the second female threaded portion 304 may be screwed to the second male threaded portion 206 of the screw pin 200, and a hexagon wrench may be formed at the center of the head 306 of the plug head 300. Since the groove 308 of the hexagonal pillar shape that can be fitted is formed, the plug head 300 is easily detached.

When the plug head 300 is coupled to the screw pin 200, the plug head 300 is disposed between the head 306 of the plug head 300 and the stepped portion 208 of the screw pin 200. The cylindrical body 302 of) will have a shape that is connected. At this time, since the outer diameter of the body 302 of the plug head 300 is smaller than the outer diameter of the head portion 306 and the length of the stepped portion 208, the annular space defined by the head portion and the stepped portion is It is formed outside of the body 302. Induction bushing 400 is disposed in the annular space.

FIG. 7 is a detailed view of the induction bushing 400 inserted and fixed in an annular space defined by the head 306 and the stepped portion 208.

The induction bushing 400 is formed of a body 402 having an elliptic cylinder shape, and has a through hole 404 having a circular cross section along the longitudinal direction of the elliptic cylinder, and the through hole 404. The lower surface is provided with a stopper 405 consisting of a stepped edge. In this case, the diameter of the through hole 404 formed in the induction bushing 400 corresponds to the outer diameter of the body 302 of the plug head 300, and the induction bushing 400 is spaced apart from the second male thread part 206. When inserted while having the plug head 300 is inserted into the gap between the second female threaded portion 304 of the plug head 300 and the second male threaded portion 206 of the screw pin 200 is screwed.

When the coupling is completed, the bottom surface 406 of the induction bushing 400 is supported by the stepped portion 208 of the screw pin 200, and the top surface 408 of the induction bushing 400 is the induction bushing 400 The guide bushing 400 is pushed by the head portion 306 of the plug head 300 screwed to the second male threaded portion 206 while being inserted along the through hole 404. It may be firmly fixed between the pin 200 and the plug head 300.

The length of the body 302 of the plug head 300 may be variously selected. When the length of the body 302 of the plug head 300 is the same as the height of the induction bushing 400, the induction bushing ( In consideration of the stopper 405 of 400, a shaft diameter portion 310 which is stepped inwardly is formed at a lower end of the body 302 of the plug head 300, and the length of the shaft diameter portion 310 is defined by the induction bushing ( 400, it should be longer than the length from its bottom 406 to the point where the stopper 405 is formed. That is, the state in which the body 302 of the plug head 300 cannot be sufficiently inserted by the stopper 405 of the induction bushing 400 should be avoided. Simply, the length of the body 302 of the plug head 300 is the same as or shorter than the length from the upper surface 408 of the guide bushing 400 to the point where the stopper 405 is formed. Interference by 405 may be avoided.

The induction bushing 400 may have a cylindrical shape, but in the present invention, the overall shape is an elliptic cylinder. That is, the induction bushing 400 of the present invention is composed of a body 402 having an elliptic cylinder shape, so that the induction part 510 of the drill 500 rotates at a high speed while being guided along the through hole 404. Since the guide bushing 400 fixed to the stent has an elliptical cross section in a direction perpendicular to the drilling direction of the drill 500, the induction bushing 400 is prevented from rotating as the drill 500 rotates. This can be done (see Fig. 8).

In addition, the induction bushing 400 is fixed to the stent such that both sides 410 and 410 'of the ellipsoidal long axis direction of the body 402 having the ellipsoidal body shape are directed to the buccal side of the subject, so that the space in which the implant is to be placed Even in a narrow case, since both side surfaces of the body 402 of the guide bushing 400 in the ellipsoid short axis direction are located between the teeth, the degree of freedom in installing the guide bushing 400 increases.

Incidentally, this elliptic cylinder shape has an advantage of making it easier to handle the induction bushing 400 having a smaller size than the cylindrical shape.

In addition, the planar portion 412 may be formed at a portion of at least one side of both sides 410 and 410 ′ in the long axis direction of the elliptic surface of the body 402 having the elliptic cylinder shape. This is to improve the up and down fixability of the induction bushing (400). Of course, it is more preferable that the planar portions 412 are formed on portions of both sides 410 and 410 'in the long axis direction of the ellipsoid.

In addition, a coolant hole 414 is formed on at least one side of both sides 410 and 410 ′ in the long axis direction of the elliptic surface of the body 402 having the ellipsoidal body shape. The coolant hole 414 supplies a coolant for cooling the drill 500 heated by friction with the through-hole 404 of the guide bushing 400 during the drilling operation of the alveolar bone or a cooling oil for performing a lubricating function. It is a hole. Cooling water hole 414 is preferably formed at a position 1/2 or 1/3 of the overall height from the bottom surface 406 of the body 402, which is the coolant or coolant flowing into the coolant hole 414 is drill ( This is to spread well throughout the induction part 510 of the 500. If necessary, in order to increase the cooling efficiency, a plurality of cooling water holes 414 may be provided.

In addition, the planar shape of the stepped portion 208 of the screw pin 200 also corresponds to the ellipsoidal shape of the induction bushing 400, and is preferably made to the ellipsoidal shape of the induction bushing 400, which is a fixed pin assembly 10. This is because the overall directionality, that is, the side surfaces 410 and 410 'of the major axis of the ellipsoidal surface of the guide bushing 400 and the screw pin 200 is advantageous to determine the direction to be directed toward the buccal side of the subject.

Another characteristic of the guide bushing 400 of the fixing pin assembly 10 according to the present invention, at least two auxiliary screw thread 416 is circumferentially on the upper inner peripheral surface of the through hole 404 formed in the guide bushing 400 It is formed at equal intervals in the direction. This is because, as mentioned above, the stopper 405 provided in the induction bushing 400 can only limit the longitudinal movement of the tab or fixture guided to the induction bushing 400, so A new configuration for limiting the total amount is required, and the new configuration for realizing this is the auxiliary screw thread 416.

The pitch of the auxiliary screw thread 416 is formed to be equal to the pitch of the male thread thread formed on the surface of the mechanism guided by the through hole 404. The auxiliary thread thread 416 is one or more suitable numbers along the circumferential direction. If the auxiliary screw thread 416 is formed in a plurality of two or more, it is preferable to make equal intervals along the circumferential direction.

The role of the secondary thread 416 is to limit the amount of rotation of the instrument, such as a tap or fixture on which the male thread is formed, to be within a certain error probability. If the case where two auxiliary threads 416 are formed is described as an example, even after the tap or fixture rotates beyond the target rotation amount, the auxiliary thread 416 is rotated after the auxiliary thread 416 is caught. Only a few more turns, moreover, if there are two secondary threads 416, the probability that the maximum rotational range is only more or less than the target amount in the range of 1/2 the number of revolutions of the secondary thread 416 It is possible to limit the amount of rotation of the instrument to be within a certain error probability.

Preferably, three auxiliary screw threads 416 are formed at equal intervals of 120 °, and the plurality of auxiliary screw threads 416 are each formed by one rotation. In this case, if the lead of the instrument and the auxiliary screw thread 416 is 1.5 mm, the amount of rotation is limited to an error range within ± 0.5 mm, and this degree of error is estimated to be sufficiently acceptable during the implant procedure.

In addition, as illustrated in FIG. 9, concave fixing portions 418 are formed at both sides 410 and 410 ′ in the major axis of the ellipsoidal surface of the upper surface 408 of the body 402 having the ellipsoidal body shape of the induction bushing 400. And an extension bushing 600 formed at a lower surface of the induction bushing 400 with a hole 610 having the same diameter as that of the through hole 404 and having a protrusion 612 coupled to the fixing part 418. By further connecting, it is possible to extend the length leading to the drill 500 for implant precision placement. In this case, when the fixing pin assembly 10 of the present invention is assembled with the extension bushing 600 coupled to the induction bushing 400, the length of the body 302 of the plug head 300 also includes the length of the extension bushing 600. It should be longer for the length.

In addition, although the auxiliary screw thread 416 of the induction bushing 400 is not illustrated in FIG. 9, the auxiliary screw thread may also be used in the induction bushing 400 to which the extension bushing 600 may be connected by forming the concave fixing part 418. Of course, 416 may be formed.

Briefly describing the process of manufacturing the implant stent (1) using the fixing pin assembly 10 of the present invention having the above configuration as follows.

First, before the implant procedure, using the impression material of the rubber material to obtain the upper and / or lower jaw of the subject, the plaster is poured into the jaw to produce the same plaster model as the upper and / or lower jaw of the subject.

Then, it is coupled to an artificial articulator to reproduce the jaw joint and the upper and lower teeth which are almost similar to those of the subject, outside the oral cavity, and the holes are lost so that the fixing pin assembly 10 is inserted in the position where the implant is to be treated. . At this time, the depth and angle (direction) of the hole is made to correspond to the depth and angle of puncture of the alveolar bone previously determined through the image diagnosis.

In the hole drilled in the plaster model, the fixing pin assembly 10 of the present invention is inserted into which the guide bushing 400 is fitted, and the outer peripheral surface of the anchor 100 of the fixing pin assembly 10 or the Adhesive material is applied in the holes. At this time, the direction of the fixing pin assembly 10 is such that both sides (410, 410 ') of the long axis direction of the ellipsoid of the body having the ellipsoidal cylinder shape of the induction bushing 400 toward the buccal side of the subject.

After the adhesive material is cured and the fixing pin assembly 10 inserted into the plaster model is firmly fixed, a transparent material is applied to the surface of the plaster model so that the fixing pin assembly 10, particularly the induction bushing 400 is included therein. .

When the curing of the transparent material is completed, the fixing pin assembly 10 is disassembled. First, the plug head 300 of the fixing pin assembly 10 is removed, and then the transparent material in which the induction bushing 400 is embedded is plastered. Pull out from the model frame. The finished product of the transparent material is used as the implant stent (1), and the implant stent (1) includes an induction bushing (400) fixed at the correct depth and angle at the correct position.

Through this process, only the anchor 100 and the screw pin 200 are embedded in the plaster model, and the anchor 100 and the screw pin 200 are screwed together (the first female threaded part and the first male threaded part screw). Combined), it is possible to remove only the screw pin 200 from the gypsum model in this state.

When the screw pin 200 is separated, only the anchor 100 remains in the plaster model, which is another important aspect of the fixing pin assembly 10 of the present invention. That is, it is important that the gypsum model in which only the anchor 100 remains can be used as a base for simulating or adjusting the assembly of implant fixtures, abutments and artificial crowns. Therefore, since all processes from the puncture of the alveolar bone to the implantation are performed through a single gypsum model, the possibility of successful implantation of the implant is dramatically improved. In addition, since the procedure can be preliminarily tested through a plaster model before placing the implant directly on the subject, the burden on the subject can be greatly reduced and the overall time required for the procedure can be shortened.

Although the technical features of the present invention have been described through the preferred embodiments, the present invention is not limited to the illustrated embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention. It will be self-evident to those of ordinary knowledge. Accordingly, such modifications or variations will also belong to the claims of the present invention.

1 is a view of the implant stent of the prior patent application No. 2007-0107408 of the applicant.

Figure 2 is an assembly perspective view and a partial perspective view of the fixing pin assembly used in the preparation of the implant stent according to the present invention.

Figure 3 is an exploded perspective view of the fixing pin assembly used in the manufacture of the implant stent in accordance with the present invention.

4 shows the anchor of FIG. 3 in detail;

5 shows the screw pin of FIG. 3 in detail.

6 shows the plug head of FIG. 3 in detail;

7 is a view showing in detail the induction bushing of FIG.

8 is a view briefly showing a state in which the drill for drilling alveolar bone by the guide bushing of FIG.

9 is a view briefly showing the extension bushing coupled to the induction bushing of FIG.

DESCRIPTION OF REFERENCE NUMERALS

10: fixing pin assembly 100: anchor

102: first female thread portion 104: groove

106: flat surface 108: end

200: screw pin 202: body

204: first male thread portion 206: second male thread portion

208: step 300: plug head

302: body 304: second female thread portion

306: head 308: groove

310: shaft diameter 400: induction bushing

402: body 404: through hole

405: stopper 406: bottom

408: upper surface

410, 410 ': Side surface in the long axis of the ellipsoid of the induction bushing

412: plane portion 414: cooling water hole

416: auxiliary thread 500: drill

510: guide portion 600: extension bushing

610: hole 612: protrusion

Claims (16)

An anchor having a cylindrical shape having a first female screw portion formed at an inner central portion thereof; A cylindrical body, a first male threaded portion formed at one end of the body, a second male threaded portion formed at the other end of the body, and a plate-shaped stepped portion formed between the body and the second male threaded portion, the first A screw pin, the male screw portion of which can be screwed into the first female screw portion of the anchor; And A body of a cylindrical body, a second female screw portion formed at a center portion of the lower end of the body, and a head portion formed to be stepped on the upper end of the body so as to be larger than an outer diameter of the body, wherein the second female screw portion has a second portion of the screw pin. A plug head that can be screwed onto the male thread portion; Fixing pin assembly used for fabricating the stent for implants comprising a. The method according to claim 1, An induction bushing formed of a body having an elliptic cylinder shape and having a through hole having a circular cross-section along the longitudinal direction of the elliptic cylinder; The diameter of the through-hole formed in the induction bushing further includes an outer diameter of the plug head body, and the induction bushing is inserted into the second male threaded portion so that the bottom surface thereof is supported by the stepped portion of the screw pin. The upper surface of the induction bushing is pressed by the head of the plug head screwed into the second male threaded portion while being inserted into the through hole of the induction bushing to fix the induction bushing between the screw pin and the plug head. Fixing pin assembly used to make the implant stent. The method according to claim 1 or 2, Fixing pin assembly for use in the manufacture of the implant stent, characterized in that the groove is formed in the lower portion of the anchor along the circumference. The method according to claim 3, At least one flat surface is formed on the outer circumferential surface of the anchor fixing pin assembly used for manufacturing the stent for the implant. The method according to claim 1 or 2, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the outer diameter of the anchor and the outer diameter of the screw pin body. The method according to claim 2, The length of the body of the plug head is the same as the height of the induction bushing, the lower end of the body is formed with a shaft diameter stepped inward, The guide bushing is formed with a stopper having a stepped edge on a lower surface of the through hole, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the length of the shaft diameter is longer than the length from the bottom surface of the guide bushing to the point where the stopper is formed. The method according to claim 2, The guide bushing is formed with a stopper having a stepped edge on a lower surface of the through hole, The length of the body of the plug head is fixed pin assembly used in the manufacture of the implant stent, characterized in that the same or shorter than the length from the upper surface of the guide bushing to the point where the stopper is formed. The method according to claim 1 or 2, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the groove of the hexagonal pillar shape is formed in the center of the head of the plug head. The method according to claim 2, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the planar shape of the stepped portion of the screw pin corresponds to the ellipsoidal shape of the induction bushing. The method according to claim 2, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the lower surface of the through hole of the guide bushing is provided with a stopper consisting of a stepped corner. The method according to claim 2, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the planar portion is formed on a portion of at least one side of both sides of the ellipsoidal long axis direction of the body having an ellipsoidal cylinder shape of the induction bushing. The method according to claim 2, Fixing pin assembly used in the manufacture of the implant stent, characterized in that the cooling water hole is formed on at least one side of both sides of the ellipsoidal long axis direction of the body having an ellipsoidal cylinder shape of the induction bushing. The method according to claim 2, At least one auxiliary thread is formed on the upper inner circumferential surface of the through hole formed in the guide bushing, and the pitch of the auxiliary thread is the same as the pitch of the male thread formed on the surface of the mechanism guided by the through hole. Fixing pin assembly for stent fabrication. 14. The method of claim 13, Fixing pin assembly used for manufacturing the implant stent, characterized in that the auxiliary screw is formed three at equal intervals of 120 °. 14. The method of claim 13, Fixing pin assembly for use in manufacturing the implant stent, characterized in that the plurality of auxiliary screw thread is formed by one rotation each. The method according to claim 2 or 13, Concave fixing portions are formed at both sides of the ellipsoidal longitudinal direction of the upper surface of the body having an elliptic columnar shape of the induction bushing, and holes having the same diameter as the through holes of the induction bushing are formed therethrough and coupled to the fixing portion at the lower surface thereof. Fixing pin assembly used in the manufacture of the implant stent, characterized in that it further comprises an extension bushing formed.
KR20080093588A 2008-09-24 2008-09-24 Fixation pin assembly using in manufacturing an implant-stent for accurate guided insertion KR100993666B1 (en)

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KR20080093588A KR100993666B1 (en) 2008-09-24 2008-09-24 Fixation pin assembly using in manufacturing an implant-stent for accurate guided insertion
PCT/KR2009/005467 WO2010036045A2 (en) 2008-09-24 2009-09-24 Fixing pin assembly used in the manufacture of stents for precise, guided implant placement

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KR20190018811A (en) 2017-08-16 2019-02-26 이태경 Dental guide template having surgical information tag
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KR20190031644A (en) 2017-09-18 2019-03-27 이태경 Base plate for installation of robot arm
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BR102022006573A2 (en) * 2022-04-05 2023-10-17 M3 Health Indústria E Comércio De Produtos Médicos, Odontológicos E Correlatos S.A. DENTAL SURGICAL GUIDE FIXATION DEVICE

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WO2013005241A3 (en) * 2011-07-01 2013-04-11 Leone S.P.A. Surgical guide system for dental implantology and method for making the same
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KR20180092480A (en) 2017-02-09 2018-08-20 이태경 Guide bushing assembly for precisely guided dental implant surgery
KR20190018811A (en) 2017-08-16 2019-02-26 이태경 Dental guide template having surgical information tag
KR20190029114A (en) 2017-09-12 2019-03-20 이태경 Drill set for precisely guided dental implant surgery
KR20190031644A (en) 2017-09-18 2019-03-27 이태경 Base plate for installation of robot arm
KR20190043682A (en) 2017-10-19 2019-04-29 이태경 Oral cavity model for fabricating a guide template of precise dental implant surgery

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