KR101834765B1 - surgical guide for dental implant - Google Patents

Abstract

The present invention relates to a surgical guide for a dental implant, provided to surround and fixate a placement target where a fixture is placed based on three dimensional data acquired from the inside of an oral cavity of a patient in order to improve convenience and definiteness in a drilling process for placement of the fixture. The present invention comprises: a guide body part penetrating a coupling hole to be corresponded to the placement target whereas forming a circular arc shaped fixing recess part along an inner circumference of the coupling hole and forming a connection recess part communicating with an edge surface of the coupling hole at one side of the fixing recess part; and a sleeve where a guide hole is formed to be inserted into the coupling hole, wherein a drill for implants is rotated and supported in the guide hole, a guide protrusion protrudes at one side of an outer circumference to guide a placement angle of the fixture, and a fixing protrusion protrudes by being arranged to be downwardly spaced apart from the guide protrusion and inserted into the fixing recess part through the connection recess part to be restricted.

Description

A surgical guide for a dental implant

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a surge guide for dental implants, and more particularly, to a surge guide for dental implants that improves the convenience and accuracy of a drilling process for fixture placement.

Generally, an implant refers to a substitute that can replace human tissue when the original human tissue is lost, but refers to implanting artificial teeth in dentistry. That is, a fixture made of titanium or the like which does not have a rejection reaction to the human body can be substituted for the lost root, and then the teeth are inserted into the alveolar bone, and the tooth is restored by fixing the artificial tooth.

In detail, in normal prostheses or dentures, the surrounding teeth and bones are damaged over time, but the implants can prevent damage to surrounding tooth tissues and can be used stably because there is no secondary tooth decay factor. In addition, since the implant has substantially the same structure as the natural tooth, there is no pain or foreign body sensation in the gum, and the implant can be used semi-permanently if it is well managed.

In the meantime, the implantation is performed by forming a hole in the alveolar bone using a drill and placing the fixture in the hole, and the procedure of placing the drilling and fixture to form the perforation is different for each patient. This is because the position, depth and direction of the implant should be determined in consideration of various factors such as the patient's tooth condition, the position of the tooth requiring the implant treatment, and the condition of the alveolar bone of the patient.

Thus, the drilling operation for drilling the alveolar bone has a difficulty in not only the beginner but also the experienced person, it is very difficult to precisely measure the depth and direction in the course of work.

Furthermore, it is very difficult for beginners who do not have a lot of experience in the operation to measure the depth to be drilled during the procedure without a separate measurement step.

Further, when forming the perforations in the alveolar bone, the practitioner applies the force to the drill to perform the drilling operation, and it is difficult to determine to what extent the drilling operation has been performed. Furthermore, drill insertion above a certain depth can cause serious problems that damage the nerve of the alveolar bone.

Conversely, if the drilling operation is terminated before reaching a certain depth, the drilled perforations are shallow in depth and excessive force is required to fix the fixture. In addition, the thread around the perforation may be damaged or the fixture may not be fixed completely, which may lead to re-operation.

Accordingly, an auxiliary device called a surgical guide is used to grasp the exact position and direction to perform the drilling operation.

Specifically, the surge guide is made of a synthetic resin material that is easy to be molded, and a guide hole is formed at one side corresponding to the position of the perforation in a state where the surge guide is fixed inside the patient's mouth.

At this time, the guide hole is formed to correspond to the angle of the perforation and the fixture, and the outer periphery of the drill for implant is rotatably supported on the inner periphery of the guide hole, so that drilling or fixture placement can be performed.

However, conventionally, as the guide hole is easily deteriorated and deformed by a drill rotated at a high speed, there is a problem that the drill can not be supported substantially stably during the drilling. Accordingly, there is a problem in that accuracy in the direction and angle of the drilled perforations is lowered, thereby lowering the overall completeness of the implant procedure.

In order to solve such a problem, a sleeve made of a metal material, which minimizes deformation due to heat, is used by being fastened to the inner circumferential surface of the guide hole while stably supporting the drill.

However, since the conventional sleeve is made of a separate member from the surge guide, there is a problem that the sleeve rotates in conjunction with rotation of the drill. As a result, there is a problem that the guide hole is deformed by the frictional heat generated between the outer periphery of the sleeve and the inner periphery of the guide hole, and the drill can not be rotated and supported accurately.

Meanwhile, the drilling process for forming the perforations is performed at various stages such as gum removal, alveolar bone position setting, planarization, initial hole formation and expansion, thread formation, etc. Each drilling device is rotated in one direction, It can be rotated laterally and separated from the perforation.

At this time, when the drilling device is rotated in the other direction, the sleeve rotates together and is detached from the guide hole. Therefore, an unnecessary additional work for re-assembling the separated sleeve together with the drilling device is required.

Further, there is a problem that the fixing position of the surge guide or the coupling direction of the sleeve is changed at the time of re-coupling of the sleeve, thereby reducing the accuracy of the drilling process.

Korean Patent No. 10-0920727

In order to solve the above problems, the present invention provides a surge guide for dental implants, which improves the convenience and accuracy of a drilling process for fixture placement.

According to an aspect of the present invention, there is provided a surge guide for a dental implant, the surge arrester including a fixture to which a fixture is to be placed, the fixture being mounted and fixed on the basis of three- A guide body portion having an arc-shaped picking groove formed along the inner periphery of the coupling hole and having a connecting groove portion communicating with a rim portion of the coupling hole at one side of the picking slot portion; And a guide hole through which a drill for an implant is rotatably supported is formed and inserted into the coupling hole, a guide protrusion for guiding the angle of the fixture is provided on one side of the outer periphery, and is spaced downward from the guide protrusion, And a fixing protrusion which is inserted into the fixing groove portion through the connection groove to protrude therefrom, the guide protrusion being rotated at a predetermined guide angle is dropped on the edge surface of the fixing hole, Wherein the fixing protrusion is formed in a bottom surface of the picking groove portion so that the fixing protrusion falls from the guide angle and is rotated in the other direction Corresponding to the radial width and the circumferential width of the fixing protrusion It provides a surgical guide for the dental implants, characterized by a stepped downward to the lower step size recessed groove formed.

Here, the upper stepped groove is recessed to correspond to the thickness of the guide protrusion in the vertical direction, and the lower stepped groove is formed so as to support the lower end of the fixing protrusion when the guide protrusion and the lower step groove- It is preferable that the depression is formed to correspond to the depression depth of the depression.

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Further, the edge of the coupling hole may have a base recess formed in an arcuate shape corresponding to an alignment angle of the fixing protrusion and the lower stepped groove from an alignment angle of the fixing protrusion and the coupling recess, Wherein the depth of the bottom recess is set to correspond to the thickness of the guide protrusion in the vertical direction, and the lower stepped groove is formed in the upper stepped groove so as to support the lower end of the fixing protrusion when the guide protrusion and the upper stepped groove, It is preferable that the depression is formed so as to correspond to the depression depth.

The fixation protrusion is provided on the lower stepped groove so that the upper end of the dropped fixing protrusion is restrained. When the locking protrusion is lowered on the lower end of the fixing protrusion, And a slide surface formed to be inclined in a direction away from the slide surface.

Through the above solution, the surge guide for dental implants according to the present invention provides the following effects.

First, when the sleeve is rotated in one direction and pressed downward, the guide protrusion and the fixing protrusion are inserted into the upper step groove and the lower step groove, so that rotation in the other direction is restrained. Therefore, when the used drill is pulled out, And the process delay and accuracy degradation due to the separation and recombination of the sleeves can be prevented.

Secondly, since the fixing protrusion lowered along the connection groove portion is rotatably inserted into the fixing groove portion to be firstly fixed, the guide protrusion and the fixing protrusion are inserted into the respective stepped grooves in accordance with the further rotation and descent of the sleeve, As shown in Fig.

Third, a base groove portion for guiding the rotation of the guide protrusion is provided on a rim portion of the coupling hole, and the guide protrusion and the upper step groove are aligned by rotating the guide protrusion so as to be in close contact with one end of the base groove portion. The assembling convenience of the product can be improved.

Fourthly, a restraining protrusion is provided on the upper portion of the lower stepped groove, and an inclined slide surface is formed at the end of the fixing protrusion facing the restraining protrusion, so that the fixing protrusion contacted with the restraining protrusion can be smoothly lowered, So that the sleeve can be more stably fixed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a surge guide for dental implants according to an embodiment of the present invention; FIG.
FIGS. 2A, 2B, and 2C are perspective views illustrating an assembling process of a surge guide for a dental implant according to an embodiment of the present invention; FIGS.
FIGS. 3A and 3B are cross-sectional views illustrating an assembling process and an example of use of a surge guide for a tooth implant according to an embodiment of the present invention;
4 is a perspective view of a surge guide for a tooth implant according to another embodiment of the present invention.
5 is a cross-sectional view of a surge guide for a dental implant according to another embodiment of the present invention.
6 is a cross-sectional view showing an AB section of FIG. 5;

Hereinafter, a surge guide for dental implants according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a surge guide for a tooth implant according to an embodiment of the present invention. FIGS. 2a, 2b, and 2c are views showing an assembling process of a surge guide for a tooth implant according to an embodiment of the present invention. 3A and 3B are cross-sectional views illustrating an assembling process and an example of use of the surge guide for dental implants according to an embodiment of the present invention.

1 to 3B, the surgical guide 100 for a dental implant according to the present invention may include a guide body 10 and a sleeve 20.

Here, the surge guide 100 for a tooth implant is provided so as to surround and fix the placement target portion 1a on which the fixture f is placed, based on three-dimensional data obtained from the inside of the subject's mouth.

In more detail, the placement target portion 1a refers to a position where an artificial implant such as a fixture (f), an abutment, a crown or the like is to be placed in the oral cavity of the subject. At this time, a process such as formation of a perforation for placing the artificial plant material, placement of a fixture (f), attachment of abutment, etc. may be guided through the surge guide 100.

The three-dimensional data may be one of a CT image, a scan image, and an integrated image.

Here, the CT image is obtained by CT photographing the inside of the subject's mouth, and includes information on the teeth (crown and root) of the subject and bone tissue such as the alveolar bone.

The scan image is obtained by performing an oral scan of the oral cavity of the subject, and includes external information about the crown of the tooth (the upper side of the teeth appearing outside the gum) and the gum.

At this time, the integrated image can be obtained by matching based on a crown, which is a common part of the CT image and the scan image, or a reference marker previously installed in the oral cavity.

Accordingly, the bone mass, bone density, distribution of the alveolar bone (1), thickness of the gum (2) for each part of the alveolar bone (1), shape of the surrounding teeth, Etc., and artificial implants such as fixture (f), crown, abutment, etc. can be selected or designed according to the analyzed result.

The guide body 10 may include a fixing portion 10a and a process guide portion 10b. Of course, the fixing portion 10a and the process guide portion 10b may be integrally manufactured, and may be separately manufactured and combined for convenience of manufacturing.

In detail, the fixing portion 10a is formed in a dental arch shape as a portion for fixing the guide body portion 10 to the inside of the subject's mouth, and a mold groove 12 is formed on one side of the fixing portion 10a, .

In this case, the fixing portion 10a may be provided in a shape corresponding to one entire dental arch where the upper and lower mandible insertion target portions 1a are located. In the entire dental arch, But may be provided in a shape corresponding to an adjacent portion.

In this case, the mold recess 12 is provided to have an inner surface profile corresponding to the outer surface profile of the inside of the mouth adjacent to the placing target portion 1a based on the three-dimensional data, As the gum / crown of the subject is inserted and combined, the fixing portion 10a can be fixed inside the oral cavity.

Of course, the anchor holes (not shown) may be provided in the fixing portion 10a. At this time, as the anchor pin inserted into the anchor hole is inserted and fixed to the alveolar bone of the subject, the flow due to the soft tissues such as the gums 2 can be minimized.

The process guide portion 10b may be provided with a circular pipe member having an outer diameter and an inner diameter exceeding a cross sectional area of the placement target portion 1a substantially guiding the step of placing the artificial object.

At this time, the process guide portion 10b may be arranged to be opposed to the placement target portion 1a in a state where the fixing portion 10a is fixed to the inside of the oral cavity, so as to cover the placement target portion 1a.

Of course, the object to be placed 1a may be set corresponding to each artificial object when there are two or more artificial objects to be placed in the oral cavity, and the process guide portion 10b may have a plurality of .

On the other hand, in the process guide portion 10b, a coupling hole 11 is formed to correspond to the placement target portion 1a. Preferably, the coupling hole 11 is formed so as to pass through the external space of the guide part 10 and the object part 1a so as to correspond to the position and direction of the artificial object.

The sleeve 20 may be inserted into the coupling hole 11 and may include a bushing 21, a guide projection 23, and a fixing protrusion 24.

In detail, the bushing 21 is a tubular member having an outer diameter corresponding to the inner diameter of the coupling hole 11, and a guide hole 22 is formed through the inner hole. Accordingly, the bushing 21 can be inserted into the coupling hole 11 so as to be in close contact with the inner periphery of the coupling hole 11, and the guide hole 22 and the coupling hole 11 can be aligned with each other.

At this time, the implant drill can be rotatably supported along the inner periphery of the guide hole 22. [ Here, the implant drill includes a tissue punch used for puncturing the gum 2, a main plate drilling and perforation drill used for cutting the alveolar bone 1, a driver d used for placing the fixture f, It is desirable to understand it as a concept that includes the following.

That is, as the guide hole 22 in which the drill for the implant is rotatably supported is aligned with the engagement hole 11, the perforation of the gum 2 using the implant drill, the cutting of the alveolar bone 1, the fixture f And the like can be guided so as to correspond to the forming direction and the position of the coupling hole 11.

Here, the sleeve 20 is preferably made of a metal material such as brass having a high strength and a low coefficient of friction and thermal deformation. Accordingly, the rotation of the implant drill can be stably supported, and the occurrence of frictional heat between the inner circumference of the drill for implant and the guide hole 22 can be minimized.

In detail, the guide body 10 is preferably made of a synthetic resin material having a predetermined elasticity and a soft touch so that the manufacturing cost can be reduced by easy processing while minimizing a foreign body feeling during installation inside the oral cavity.

At this time, the implant drill is not directly supported in the coupling hole 11 on the side of the guide body 10 made of a synthetic resin but can be indirectly supported through the sleeve 20 provided in the coupling hole 11. [

Accordingly, damage to the coupling hole 11 due to stress and frictional heat during rotation of the implant drill can be minimized, and the process direction and position can be accurately guided through the coupling hole 11 even during the repetitive process. have.

1 to 2A, an arc-shaped fixing groove 15 is formed on the inner circumference of the coupling hole 11, and a rectangular hole 15 is formed on one side of the fixing groove 15, The connection groove portion 14 is formed.

The rim portion 11a of the coupling hole 11 corresponds to the rim of the coupling hole 11 on the upper surface of the process guide portion 10b and the coupling hole 11, It is preferable to understand that the bottom surface of the base groove 13 is a bottom surface when the base groove 13 is formed along the rim of the base plate 13. [

The fixing groove 15 is spaced downwardly from the bottom surface of the base groove 13 of the coupling hole 11, (11a) or the base groove (13).

The base groove 13 and the fixing groove 15 may be connected to each other by the connection groove 14 formed downward from the bottom surface of the base groove 13.

The guide protrusion 23 protrudes radially outward from the outer circumferential surface of the bushing 21 so that the bushing 21 is exposed to the outside in a state where the bushing 21 is inserted into the coupling hole 11, And is preferably provided at the upper end of the outer circumference of the bushing 21.

At this time, referring to FIGS. 2A to 3B, the angle of the fixture f can be guided through the guide protrusion 23.

In detail, a hexagonal groove f1 is formed in the fixture f so that the hexagonal protrusion provided at the lower end of the abutment (not shown) is engaged with the hexagonal groove f1.

When the shape and position of the crown (not shown) are set by the three-dimensional data, an embedding angle of an abutment (not shown) is set so that the crown (not shown) is fixed at a set position, The angle of fixation of the fixture f is set in accordance with the hexagonal projection direction of the butt (not shown).

That is, in the state where the abutment (not shown) is arranged at the set mounting angle, the mounting angle of the fixture f is set such that the hexa projection is fitted into the hexagonal groove f1.

For this purpose, a guide angle is set so as to correspond to one of the outer surfaces of the hexa-convexes at the mounting angle of the abutment (not shown), and the bushing portion 21 has the guide protrusion 23 And is fastened to the coupling hole 11 so as to be disposed.

Accordingly, when the hexagonal groove f1 of the fixture f is aligned with respect to the radially outer end of the guide projection 23, the crown and the abutment to be subsequently engaged with the fixture f are accurate Direction.

Here, the fixture f may be self-tapping by a driver d after forming a hole through a perforated drill or the like, and may be fastened to the perforation.

At this time, a protrusion d2 corresponding to the hexagonal groove f1 is formed at the end of the driver d, and an alignment protrusion d1 corresponding to one of the hexagonal faces of the protrusion d2 is formed on the outer surface of the driver d. .

That is, the screwdriver (d) is rotated to align the alignment protrusions (d1) and the guide protrusions (23) so that the fixture (f) can be fastened to the perforations.

Accordingly, even if the direction of the hexagonal groove f1 of the fixture f is not directly checked, the fixture f can be aligned and fastened at an accurate mounting angle, and only the guide projection 23 can be visually confirmed The angle of the fixture (f) / abutment suitable for the arrangement angle of the crown can be accurately confirmed.

Accordingly, the present invention can simultaneously set the position and direction of the fixture (f) / abutment suitable for the arrangement angle of the crown and the arrangement angle of the crown when the surge guide 100 is designed Based technology device can be provided.

Accordingly, the time for preparing the artificial insemination material can be remarkably reduced, and the number of times or steps for processing the artificial insemination material can be shortened, and the quality of the artificial insemination material can be improved.

The fixing protrusion 24 may protrude radially outward from the outer circumferential surface of the bushing 21 and may be spaced downward from the guide protrusion 23.

It is preferable that the fixing protrusion 24 has a sectional area equal to or smaller than the sectional area of the connection groove 14 and the thickness of the fixing protrusion 24 corresponds to the thickness h3 of the fixing groove 15 in the vertical direction .

The vertical spacing between the guide protrusion 23 and the fixing protrusion 24 corresponds to the distance from the bottom surface of the base groove 13 to the top surface of the fixing protrusion 24 .

The fixing protrusion 24 can be lowered to face the fixing groove 15 through the connection groove 14 and the fixing protrusion 24 opposed to the fixing recess 15 can be rotated And can be inserted into the inside of the fixing groove 15.

At this time, it is preferable that one of the circumferential width and the radial width of the guide protrusion 23 is formed larger than the fixing protrusion 24. Thus, the guide protrusion 23 is hooked on the rim of the connection groove portion 14, so that the fixing protrusion 24 can be accurately lowered to a height at which the fixing protrusion 24 can be inserted and rotated into the fixing groove 15.

The bottom surface of the fixing groove 15 is connected to the bottom surface of the connection groove 14 so as to be continuous from the bottom surface of the connection groove 14. The fixing groove 15 has one direction R connected to the connection groove 14 In the circumferential direction.

In this case, the one direction R means the same direction as the forward rotation direction of the implant drill, and the forward rotation direction of the implant drill is a direction in which the drill is drilled in the placement target portion 1a, .

2A, the sleeve 20 may be inserted into the coupling hole 11 in a vertical direction with the fixing protrusion 24 and the coupling groove 14 aligned with each other.

At this time, the fixing protrusion 24 is firstly lowered to a height opposite to the fixing groove 15 through the connection groove 14, and the guide protrusion 23 protrudes from the edge of the fitting hole 11 11a) to the bottom surface of the base groove portion 13.

As shown in FIGS. 2B and 3A, when the lower end of the fixing protrusion 24 is seated on the lower surface of the connection groove 14, the sleeve 20 can be rotated in one direction (R).

At this time, the fixing protrusion 24 is rotated in one direction R along the fixing groove 15, and the guide protrusion 23 protrudes from the edge surface portion 11a to the base groove portion 13 of the coupling hole 11, And is rotated in the one direction R along the lower surface of the lower surface.

That is, when the fixing protrusion 24 is rotated at a predetermined angle to be separated from the connection groove 14 in a state where the fixing protrusion 24 is inserted into the fixing groove 15, the upper end of the fixing protrusion 24 is inserted into the fixing groove 15 It is possible to prevent vertical separation of the sleeve 20 which is restrained by the upper surface portion and inserted into the coupling hole 11. [

Although the guide protrusion 23 and the fixing protrusion 24 are arranged on the same vertical line in the drawing, the guide protrusion 23 and the fixing protrusion 24 may be disposed in a shifted manner , And these variations are within the scope of the present invention.

The guide protrusions 23 and the fixing protrusions 24 may be provided in one or more of the base protrusions 23 and the upper protrusions 13a, And the lower stepped groove 15a may be provided in one or more of the projections 23 and 24 so as to correspond to the projections 23 and 24, respectively.

Meanwhile, it is preferable that an upper stepped groove 13a recessed downwardly is formed on the lower surface of the base groove part 13.

The upper stepped groove 13a is formed at a position corresponding to the guide angle and has a size corresponding to the radial width and the circumferential width of the guide protrusion 23 so that the guide protrusion 23 is inserted .

A lower stepped groove 15a recessed downward is formed on the lower surface of the fixing groove 15.

Here, the lower stepped groove 15a is formed at a position aligned with the fixing protrusion 24 when the upper stepped groove 13a and the guide protrusion 23 are aligned, and the radial direction of the fixing protrusion 24 And the fixing protrusion 24 may be inserted into the inner portion.

2C and FIG. 3B, when the sleeve 20 is rotated in one direction (R) such that the guide protrusion 23 and the upper stepped groove 13a are aligned with each other, the fixing protrusion 24 and the lower step The grooves 15a can be aligned with each other.

At this time, when the sleeve 20 is lowered, the guide protrusion 23 is inserted into the upper stepped groove 13a to be locked, and the fixing protrusion 24 is inserted into the lower stepped groove 15a So that it can be locked and fixed.

When the sleeve 20 is rotated in one direction R and pressed downward, the guide protrusion 23 and the fixing protrusion 24, which are rotated along the base groove 13 and the fixing groove 15, Is inserted into the upper stepped groove (13a) and the lower notch groove (15a) and rotation in the other direction can be restrained.

At this time, the fixing protrusion 24, which has been lowered along the connection groove portion 14, is rotationally inserted into the fixing groove portion 15 so that the sleeve 20 is primarily restrained from separating in the vertical direction, The fixing protrusions 24 are inserted and fixed in the upper step groove 13a and the lower step groove 15a, respectively.

Accordingly, since the sleeve 20 can be easily assembled only by simple operation such as rotation and pressing, and can be coupled in multiple stages so that separation from the coupling hole 11 is intrinsically blocked, Can be improved.

Both end portions of the guide protrusion 23 in the circumferential direction are confined at both ends of the upper step groove 13a and both ends of the fixing protrusion 24 in the circumferential direction are confined at both ends of the lower step groove 15a, 20 can be originally shut off.

Accordingly, thermal deformation and abrasion damage of the coupling hole 11 due to the rotational flow of the sleeve 20 are minimized, so that the process direction and position can be accurately guided even during the repetitive process, thereby improving the precision and durability of the product .

Further, since the sleeve 20 can be stably fixed even when the drill is withdrawn from the guide hole 22 in the reverse direction, the process of separating and recombining the sleeve 20 during the multi- The delay or the degradation of the process accuracy is minimized, and the precision of the product can be improved.

The rotational force applied to the sleeve 20 is distributed and supported by the pair of protrusions 23 and 24 disposed at the upper and lower portions of the bushing 21, so that the deformation of the bushing 21 or the protrusions 23 and 24 The durability of the product can be improved and the vibration of the drill due to the deformation of the bushing portion 21 can be prevented so that the precision of the implant implantation process can be improved.

In addition, since a fixing member such as an arc-shaped restraining piece for restricting the rotation of the guide projection 23 in the other direction is not required, the productivity of the product can be improved.

The base groove portion 13 has an arc shape corresponding to the alignment angle of the fixing protrusion 24 and the lower step groove 15a from the alignment angle of the fixing protrusion 24 and the connection groove portion 14, (11a) of the coupling hole (11).

The fixing protrusion 24 and the connection groove 14 are aligned with the fixing protrusion 24 and the fixing protrusion 24 from the position of the guide protrusion 23 in a state where the sleeve 20 is rotated so that the fixing protrusion 24 and the connection groove 14 are aligned, It is preferable that the sleeve 20 is formed to have an arcuate angle corresponding to the position of the guide protrusion 23 in a state in which the sleeve 20 is rotated so that the lower stepped groove 15a is aligned.

At this time, the base groove 13 is formed to have a size corresponding to the radial width of the guide protrusion 23.

The depression depths h1 and h2 of the upper stepped groove 13a and the base groove 13 are set to correspond to the thickness of the guide protrusion 23 in the vertical direction, The depth of depression h4 corresponds to the depression depth h2 of the upper stepped groove 13a.

Accordingly, when the lower end of the fixing protrusion 24 is seated on the lower surface of the connection groove 14, the lower end of the guide protrusion 23 can be inserted into the base groove 13.

At this time, the radial end of the guide protrusion 23 is guided by the base groove 13 so that the bushing 21 can be stably rotated, and one end of the guide protrusion 23 in the circumferential direction of the base The guide projections 23 and the upper step grooves 13a are aligned and the fixing protrusions 24 and the lower step grooves 15a are aligned with each other only by rotating the sleeve so as to be in close contact with one circumferential end face of the groove 13, Can be aligned.

Here, the circumferential one end of the guide protrusion 23 is preferably an end that is moved forward in one-directional (R) rotation.

Accordingly, since the rotational angle at which the sleeve 20 can be lowered secondarily after the first descent through the alignment of the fixing protrusion 24 and the connection groove 14 is guided, the assembling convenience of the product can be improved.

At this time, when the sleeve 20 is lowered so as to come into close contact with the lower surface of the guide protrusion 23 and the upper stepped groove 13a, the lower end of the fixing protrusion 24 protrudes from the lower surface of the lower stepped groove 15a, So that the guide protrusion 23 and the fixing protrusion 24 can be more stably fixed.

Further, since the upper end of the guide protrusion 23 inserted into the upper step groove 13a is prevented from being exposed to the outside of the base groove 13, the engagement of the drill during the rotation of the implant is prevented, It is possible to prevent the breakage of the surge guide 100 and the drill or the damage to the inside of the oral cavity due to the impact at the time of the latching, thereby improving the safety of the product.

4 is a perspective view of a surge guide for a tooth implant according to another embodiment of the present invention, FIG. 5 is a sectional view of a surge guide for a tooth implant according to another embodiment of the present invention, FIG. 6 is a cross- 5 is a sectional view showing an AB section.

The upper step groove 213a is formed on the rim 211a of the coupling hole 211 and the protruding protrusion 216 is formed on the upper part of the lower step groove 215a. Since the configuration is the same as the above-mentioned temporary example, a detailed description of the same configuration will be omitted.

4 to 6, the guide protrusion 223, which is rotated at a predetermined guide angle, is dropped on the edge surface portion 211a of the coupling hole 211, It is preferable that the groove 213a is formed.

At this time, it is preferable that the upper stepped groove 213a is formed so as to correspond to the thickness of the guide protrusion 223 in the vertical direction.

When the guide protrusion 223 is inserted into the upper step groove 213a so that the upper end of the guide protrusion 223 does not protrude to the outside of the upper step groove 213a, 223 can be completely inserted.

The lower stepped groove 215a may be recessed to correspond to a recessed depth of the upper stepped groove 213a.

The lower end of the falling guide protrusion 223 is in contact with the lower surface of the upper stepped groove 213a and the lower end of the fixing protrusion 224 is supported by the lower surface of the lower stepped groove 215a. The protrusions 223 and 224 can be more stably fixed to the respective stepped grooves 213a and 215a.

The vertical spacing between the guide protrusions 223 and the fixing protrusions 224 corresponds to the distance from the edge surface portion 211a of the coupling hole 211 to the upper surface of the fixing protrusion 224 .

The fixing protrusion 224 may be lowered to be opposed to the fixing recess 215 through the connection recess 214 and the fixing protrusion 224 opposed to the fixing recess 215 may be rotated And can be inserted into the inside of the fixing groove 215.

5 to 6, it is preferable that a restraining protrusion 216 is formed on the upper portion of the lower stepped groove 215a so that the upper end of the dropped fixing protrusion 224 is restrained.

The fixing protrusion 216 is disposed in a height range corresponding to the upper end of the fixing protrusion 224 while the lower end of the fixing protrusion 224 is in close contact with the lower surface of the lower stepped groove 215a. desirable.

The fixing protrusion 224 is slidable in a direction away from the restricting protrusion 216 as it goes downward at an end facing the restricting protrusion 216 so that the locking protrusion 216 slides when the locking protrusion 216 is lowered. 224a.

That is, the fixing protrusion 224 is provided such that the upper end portion of the fixing protrusion 216 facing the fixing protrusion 216 closely contacts the inner surface of the lower stepped groove 215a, and the lower end portion of the fixing protrusion 216 facing the fixing protrusion 216 And is spaced apart from the inner surface of the lower stepped groove 215a.

For example, the restraining protrusion 216 may protrude radially inward from a radially inner side of the fixing groove 215 corresponding to the upper portion of the lower stepped groove 215a.

At this time, the slide surface 224a is formed at a radially outer end of the fixing protrusion 224, and may be inclined radially inwardly toward the lower side.

Of course, the locking protrusion 216 may protrude from the one end surface in the circumferential direction of the upper-side fixing groove portion 215 of the lower stepped groove 215a to the other end side. At this time, the sliding surface 224a may protrude from the fixing protrusion 224, and may be inclined toward the other end in the circumferential direction toward the lower side.

More specifically, when the fixing protrusion 224 is unidirectionally rotated and disposed on the upper portion of the lower stepped groove 215a, the slide surface 224a and the locking protrusion 216 are disposed to face each other, and the downward movement of the locking protrusion 224 The slidable slide surface 224a can be slid in contact with the restricting projection 216. [

At this time, when the fixing protrusion 224 passes the fixing protrusion 216, the upper edge of the fixing protrusion 224 may be hooked to the lower end of the fixing protrusion 216.

Accordingly, upward flow of the fixing protrusion 224 can be restricted, and the sleeve 220 can be more stably fixed.

The fixing protrusion 216 may have a hemispherical shape in which the surface of the fixing protrusion 216 is in contact with the slide surface 224a. The lower end of the fixing protrusion 224 may be provided in a stepped manner.

The height of the fixing protrusion 224 may be changed in accordance with the thickness of the fixing protrusion 224 and the depth of the upper step groove 213a. When the fixing protrusion 224 is lowered, The position of the restraining protrusion 216 is set corresponding to the upper height.

In this case, even when the position of the restraining protrusion 216 is located on the upper side of the upper surface of the fixing recess 215 and is disposed on the rotation path of the fixing protrusion 224, The fixing protrusion 224 can be smoothly rotated because the clearance through which the protrusion 216 passes is formed.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And these modifications fall within the scope of the present invention.

100, 200: surge guide 10, 210: guide body
10a, 210a: Fixing portions 10b, 210b: Process guide portion
11,211: Coupling hole 13: Base groove portion
13a, 213a: upper stepped groove 14, 214:
15,215; Fixing groove parts 15a and 215a: Lower step groove
20,220: Sleeve 21,221: Bushing
22, 222: guide holes 23, 223: guide projections
24,224: Fixing projection 216:

Claims (5)

A surge guide for a dental implant comprising a fixture to which a fixture is placed based on three-dimensional data obtained from an oral cavity of a subject,
Wherein an arcuate picking groove portion is formed along the inner periphery of the engaging hole and a connecting groove portion communicating with a rim portion of the engaging hole is formed on one side of the picking slot portion, ; And
A guide protrusion for guiding the angle of the fixture to protrude is formed on one side of the outer circumference of the guide hole, and the guide protrusion is spaced downward from the guide protrusion, And a fastening protrusion inserted and fixed to the fixing groove through the groove,
The guide protrusion that is rotated at a predetermined guide angle falls on the rim surface of the engaging hole so as to be engaged and fixed so as to restrain rotation in the other direction, and the engaging hole is stepped downward in a size corresponding to the radial width and the circumferential width of the guide protrusion The upper stepped groove is formed,
Wherein the lower surface of the picking slot portion is formed with a lower stepped portion which is recessed downwardly in a size corresponding to a radial width and a circumferential width of the fixing protrusion so that the fixing protrusion falls down to be restrained in the other direction, Wherein a groove is formed in the sidewall of the dental implant. delete The method according to claim 1,
The upper stepped groove is recessed to correspond to the thickness of the guide protrusion in the vertical direction,
Wherein the lower stepped groove is formed so as to correspond to the depth of depression of the upper stepped groove so as to support the lower end of the fixing protrusion when the guide protrusion and the upper stepped groove groove are in close contact with each other. The method according to claim 1,
Wherein a base recess portion formed in an edge surface portion of the coupling hole is formed in an arcuate shape corresponding to an alignment angle of the fixing protrusion and the lower step groove from an alignment angle of the fixing protrusion and the connection groove portion,
The sum of the depth of depression of the upper stepped groove and the depth of the base groove portion is set to correspond to the thickness of the guide protrusion in the vertical direction,
Wherein the lower stepped groove is formed so as to correspond to the depth of depression of the upper stepped groove so as to support the lower end of the fixing protrusion when the guide protrusion and the upper stepped groove groove are in close contact with each other. The method according to claim 1,
A restricting protrusion is provided on an upper portion of the lower stepped groove so that an upper end of the dropped fixing protrusion is restrained,
Wherein the fixation protrusion is provided with a slide surface that is inclined in a direction away from the restricting protrusion so as to slide down the restricting protrusion when the protrusion protrudes from the end of the fixation protrusion when the protrusion protrudes downward.

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