KR20080049377A - Implant unit using dentistry - Google Patents

Abstract

An implant unit having a rotation preventing pivot between a coupling element and abutment is provided to prevent the loosing of a screw of the coupling element, and to maintain the connected state of an implant semi-permanently. An implant unit comprises: a fixture(110); a coupling part(130); and an anti-loosening mechanism(140). The fixture includes a thread(111), a drill portion(113), and a joint guide portion(115) formed into multi-level grooves consisting of an inclined groove, a hexagonal groove, and a screw hole. The abutment includes a hexagonal projection(121), a hollow hole(123), and a semi-circular key hole(125). The coupling part includes a tap for screw coupling, a wrench groove at the top end of the tap, and a head with a key hole. The anti-loosening mechanism includes a plurality of pivots(141) for preventing rotation, and a connection ring(143) for connecting the top ends of the pivots.

Description

Implant unit with screw loosening structure {IMPLANT UNIT USING DENTISTRY}

1 is an exploded perspective view showing a conventional implant unit.

Figure 2 is a cross-sectional view showing the internal structure of a conventional implant unit.

Figure 3 is an exploded perspective view showing the overall structure of the implant unit according to an embodiment of the present invention.

4 is a perspective view of the implant unit combined according to an embodiment of the present invention.

Figure 5 is a longitudinal cross-sectional view showing an internal coupling state of the implant unit according to an embodiment of the present invention.

Figure 6 is a cross-sectional view showing a coupling state of the implant unit according to an embodiment of the present invention.

7 to 8 is an exploded perspective view for explaining the coupling preventing structure of the implant unit according to another embodiment of the present invention.

Figure 9 is an exploded perspective view for explaining the coupling preventing structure of the implant unit according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

110: fixture 111: thread

113: drill portion 114: lower key hole

115: joint guide portion 115a: inclined groove

115b: hexagonal groove 115c: fastening member hole

116: screw hole 120: abutment

121: hexagonal protrusion 122: wrench groove

123: hollow hole 124: upper key hole

125: keyhole 127: screw portion

130: fastening member 131: tab

133: head 134: wrench groove

135: keyhole 140: release lock

141: anti-rotation protrusion 143: connection ring

145: corner protrusion 147: polygonal plate

The present invention relates to an implant unit having an anti-loosening structure which prevents loosening of screws, and more particularly, in the fastening operation of a screw of a fixture and an abutment, after the last tightening of the fastening member, A screw loosening prevention structure is provided to match the loosening prevention tool having the rotation preventing shaft projection between the hollow holes to prevent the screw loosening of the fastening member due to the micro vibration, and thus to maintain the permanently coupled state of the artificial tooth. It relates to an implant unit having.

In general, artificial teeth are artificially created teeth that are almost identical to human natural teeth in appearance and function, and these artificial teeth are used to replace natural teeth when they are defective by various factors.

In order to replace natural teeth with artificial teeth, three methods of prosthetic, denture, or alveolar bones are required. In addition to the damage of the teeth, the lifespan is not so long as a decade, and in the case of dentures, as well as the damage of the natural teeth, it may come out of the process of use, as well as give the user a feeling of having a foreign body in the mouth There is a problem inconvenient to use. Therefore, in the case of the prosthetics and dentures, the utilization rate is decreasing.

On the other hand, when artificial teeth are implanted in the alveolar bone, they are hardly distinguishable from natural teeth after they are completed without damaging other natural teeth around them. The implant unit is used as a structure for embedding such an artificial tooth in the alveolar bone.

1 is an exploded perspective view showing a conventional implant unit, Figure 2 is a cross-sectional view showing the internal structure of a conventional implant unit.

The conventional implant unit as shown in the figure is largely composed of a fixture (10), an abutment (20) and a screw (30).

The implant unit having such a configuration may be classified into an external type and an internal type according to the coupling type of the fixture 10 and the abutment 20. The difference between the two types is as follows. The case where the cross section of the coupling portion of the fixture 10 protrudes to the outside is called an external type, and the case where the cross section of the coupling portion is recessed inside is called an internal type.

This classification is substantially identical in configuration and operation with only differences in shape. 1 to 2 illustrate an implant unit of an external type.

First, the fixture 10 is directly embedded in the alveolar bone (jawbone) to perform a kind of pillar role, the outer diameter surface of the body is formed with a screw thread 11 for screwing into the alveolar bone, the top of the hexagon head 13 is formed, the fastening hole 15 is formed in the vertical direction inside the center of the head (13).

In this case, the screw 30 is fastened to the fastening hole 15 at the upper end of the fixture 10 in a manner of fixing the abutment 20 to the fixture 10.

Next, the abutment 20 serves as a support for mounting the artificial tooth, the lower end of the hexagonal guide groove 21 that is opposed to the hexagon head 13 of the fixture (10) And a hollow hole 23 that guides the screw 30 to penetrate the shaft.

Then, the screw 30 is formed in the upper head of the driver slot groove of the straight or cross-shaped or hexagonal wrench seat groove is formed.

Referring to the operation of the prior art consisting of the above configuration as follows.

First, the fixture 10 is screwed into the alveolar bone (jawbone). At this time, the alveolar bone is in a state of being holed a little smaller than the outer diameter of the fixture (10).

Next, the abutment 20 is positioned on the fixture 10. At this time, the hexagonal head 13 of the upper portion of the fixture 10 and the hexagonal guide groove 21 inside the lower portion of the abutment 20 are guided to each other to be seated. Thus, the abutment 20 located on the upper portion of the fixture 10 is not rotated.

Next, the screw 30 is penetrated into the hollow hole 23 of the abutment 20 so that the thread of the screw 30 is fastened to the fastening hole 15 of the fixture 10, thereby fixing the fixture 10. ) And the abutment 20 to form a fully coupled state is prevented.

After fixing the implant consisting of the fixture 10, the abutment 20, and the screw 30 to the alveolar bone in this manner, the abutment 20 is covered with an artificial tooth, thereby artificially damaging the patient's permanent tooth. It will be fed with teeth.

However, in the conventional implant unit as described above, when the continuous load in the oral cavity is repeated by the practitioner chewing and ingesting food, the screw 30 vibrates finely, and the vibration width gradually increases. The self-rotation is performed to loosen the screw coupling state, which generates a play between the fixture 10 and the abutment 20, causing the abutment 20, that is, the artificial tooth to shake, so that the patient can chew food smoothly. There is a problem that will not be able to, and causing undesirable chewing pressure around the teeth, which causes a short life of the implant.

Due to this, there was an inconvenience of recombination of the fixture and the abutment, and there was a problem in which the patient himself had to suffer physical pain and mental stress as well as the financial and time damage caused by the recombination procedure.

An object of the present invention for solving the problems of the prior art is an anti-rotation axon between the fastening member and the hollow hole of the abutment after the last tightening of the fastening member during the fastening of the fastening member of the fixture and the abutment According to the present invention, there is provided an implant unit having an anti-loosening structure, which allows the anti-loosening phenomenon of the fastening member due to the micro-vibration to be matched with the anti-loosening tool having the anti-loosening structure.

In addition, another object of the present invention is to prevent the physical and mental pain and economic loss caused by loosening of the screw according to the existing implant treatment method to the patient himself, and to the dentist the heart of the surgical failure (recombination procedure) The present invention provides an implant unit having an anti-loosening structure that can reduce the burden and allow a more stable procedure to build a trust relationship between a patient and a doctor.

Implant unit having a screw loosening prevention structure according to the present invention for achieving the above object, the fixture is coupled to the alveolar bone; An abutment axially coupled to an upper end of the fixture; And an anti-loosening tool axially coupled in a vertical direction to prevent rotation between the fixture and the abutment.

An implant unit having a screw loosening prevention structure according to an embodiment of the present invention, a fixture coupled to the alveolar bone; An abutment axially coupled to an upper end of the fixture; A fastening member screwed to prevent the abutment from being separated from the fixture; And a key hole formed to include half the outer diameter of the fastening member and the inner diameter of the hollow hole of the abutment. It is fitted to the key hole and includes an anti-loosening tool to prevent rotation between the fastening member and the abutment.

Here, the keyhole is characterized in that 1 to 6 are formed at equal intervals.

And, the anti-loosening tool is characterized in that consisting of a rotation preventing axle consisting of 1 to 6, the connection ring is coupled to the rotation preventing axles along the circumference.

An implant unit having a screw loosening prevention structure according to another embodiment of the present invention, a fixture coupled to the alveolar bone; An abutment axially coupled to an upper end of the fixture to form a polygonal hollow hole in the center; A fastening member screwed so that the abutment is not separated from the fixture and having a polygonal wrench groove formed at an upper center thereof; And forming a polygonal projection to be matched with the wrench groove of the fastening member, and an upper end of the polygonal projection including an anti-loosening tool forming a polygonal plate to be aligned with the hollow hole of the abutment in a horizontal direction.

Here, the anti-loosening tool may be formed such that the number of angles of the polygonal protrusion and the polygonal plate is the same, and each corner is located in a straight line from the center.

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

Figure 3 is an exploded perspective view showing the overall structure of the implant unit according to the present invention, Figure 4 is a perspective view of the coupling of the implant unit according to the present invention, Figure 5 is a longitudinal cross-sectional view showing the internal coupling state of the implant unit according to the present invention. FIG. 6 is a cross-sectional view illustrating an engagement state of an implant unit according to the present invention, but illustrates an internal type implant unit, which is to be clarified in advance to have the same configuration and operation in an external type implant unit. do.

The implant unit having a screw loosening prevention structure according to the present invention as shown in the drawing is largely composed of a fixture 110, an abutment 120, a fastening member 130 and a loosening zone 140. .

For more detailed description of each configuration of the implant unit, first the fixture 110 is directly embedded in the alveolar bone (jawbone) to perform a kind of pillar role, a screw thread for screwing the alveolar bone on the entire outer diameter surface of the body ( 111) is formed, the lower end of the body is formed a drill portion 113 is processed to advance while cutting the alveolar bone tissue when the body is rotated, the upper end of the body is grooved into the center of the shaft and abutment A joint guide 115 for coupling the 120 and the fastening member 130 is formed.

At this time, the joint guide portion 115 is processed into a multi-step groove shape, the inclined groove 115a for guiding the registration of the abutment 120 from the inlet, and the hexagonal projection 121 of the abutment 120 and It consists of a hexagonal groove 115b for matching, screw hole 115c for screwing with the fastening member 130.

Next, the abutment 120 is combined with the fixture 110 to serve as a support for mounting an artificial tooth, the hexagonal groove 115b of the fixture 110 at the bottom of the body is formed in a conical shape Hexagonal protrusions 121 are formed to be matched to each other, and a hollow hole 123 is formed in the center of the upper end of the body to guide the fastening member 130 to the shaft. The semicircular keyhole 125 is formed to be formed in the vertical interval at the interval position. In addition, the key hole 125 may be manufactured in various shapes without being limited to a semi-circular shape.

 In this case, the key hole 125 is illustrated in three directions, that is, formed at intervals of 120 degrees, but may be equally arranged with fewer or more numbers. Preferably 1 to 6 are formed.

Next, the fastening member 130 is to maintain the predetermined mechanical coupling strength by coupling the abutment 120 to the upper end of the fixture 110, the fixed section of the fixture 110 is axially extended to the lower end A tab 131 for screwing into the screw hole 115c is formed, and a head 133 having a wrench groove 134 and a key hole 135 is formed at an upper end of the tab 131.

At this time, the wrench groove 134 is formed in the center of the head 133, the key hole 135 forms a semi-circular groove that is dug in the vertical direction at equal intervals around the outer diameter of the head 133, It is preferable to form three directions, that is, 120 degrees apart. The keyhole 135 is not limited to the semi-circular shape may be manufactured in various shapes.

In addition, the wrench groove 134 may be formed as a driver seat groove of a straight or cross shape.

Next, the loosening prevention part 140 is for preventing the screw loosening phenomenon of the fastening member 130 due to the fine vibration, provided between the hollow member 123 of the fastening member 130 and the abutment 120. A plurality of anti-rotation accumulators 141 are formed to match the respective keyholes 125 and 135, and a connection ring 143 is formed to connect an upper end of the anti-rotation accumulator 141. In this case, the center of the connection ring 143 may form a polygonal hole so that a tool such as a wrench may be matched.

In addition, the anti-loosening tool 140 may be manufactured in a rod-shaped unit and combined.

The anti-loosening tool 140 as described above may be inserted after the last tightening process or immediately after the fastening operation of the fixture 110 and the abutment 120 using the fastening member 130. In addition, it can be made of a variety of materials, such as metal or non-metallic materials, synthetic resins, ceramics, etc. is required for corrosion resistance and durability to withstand continuous vibration.

Referring to the operation of the present invention having the above configuration as follows.

First, the fixture 110 is coupled to the alveolar bone (jawbone), and then, when the fixture 110 is located in the alveolar bone, the abutment 120 is positioned at the upper end thereof. At this time, the hexagonal protrusion 121 of the abutment 120 is axially matched to the hexagonal groove 115b of the fixture 110, thereby preventing rotation.

Then, the fastening member 130 is penetrated into the hollow hole 123 of the abutment 120, so that the screw thread of the fastening member 130 is screwed into the screw hole 115c of the fixture 110. In order to prevent separation of the fixture 110 and the abutment 120 from each other.

Thereafter, the release preventing device 140 is inserted into the hollow hole 123 of the abutment 120, and the anti-rotation shaft protrusion 141 of the release preventing device 140 is abutment ( 120 and simultaneously inserted through the key holes (125,135) formed to communicate with each other to the fastening member 130 to limit the rotation of the fastening member 130, thereby preventing the self-releasing phenomenon of the fastening member 130.

At this time, the keyholes 125 and 135 respectively formed in the abutment 120 and the fastening member 130 are axially aligned in a state in which communication is possible before insertion of the release preventing device 140.

7 to 8 are exploded perspective view for explaining the loosening prevention coupling structure of the implant unit according to another embodiment of the present invention, the implant unit having a screw loosening prevention structure as shown in the same figure, is coupled to the alveolar bone Fixture 110, the abutment 120 axially coupled to the upper end of the fixture 110 to form a polygonal hollow hole 123 in the center, the abutment 120 is the fixture 110 To form a fastening member 130 and a polygonal projection 145 to be matched with the wrench groove 134 of the fastening member 130 is screwed so as not to be separated from the upper center is formed a wrench groove 134 of the polygonal shape, The upper end of the polygonal projection 145 is composed of an anti-loosening hole 140 for forming a polygonal plate 147 in a horizontal direction to be matched with the hollow hole 123 of the abutment 120.

Here, the anti-loosening tool 140 equals the number of angles formed by the polygonal projection 145 and the polygonal plate 147, and each corner of the polygonal projection 145 and the polygonal plate 147 is formed from the center. It is formed to be located in a straight line.

In addition, the polygonal projection 145 and the polygonal plate 147 of the anti-loosening member 140 are preferably manufactured in a hexagon as shown in the drawing, but is not limited thereto and may be manufactured in various shapes.

In the implant unit having the structure as described above, the fastening member 130 is mechanically coupled between the fastening member 130 and the abutment 120 by the loosening prevention tool 140, and the fastening member 130 is rotated. To prevent this.

9 is an exploded perspective view for explaining the loosening prevention coupling structure of the implant unit according to another embodiment of the present invention, the implant unit having a screw loosening prevention structure as shown in the same drawing, the fixture 110, It is composed of a butt 120, anti-loosening 140.

The fixture 110 is coupled to the alveolar bone to serve as a pillar, and the fixture 110 has a screw hole 116 formed at the top center thereof, and a plurality of lower key holes 114 around the screw hole 116. Is formed. At this time, the abutment 120 is coupled using the screw hole 116.

The abutment 120 is integrally formed with a screw portion 127 for screwing into the screw hole 116 of the fixture 110 at the bottom, a wrench groove 122 is formed at the center of the top, the wrench A plurality of upper key holes 124 is formed around the groove 122.

At this time, the release preventing device 140 is manufactured in the shape of a rod, the key hole 124 of the abutment 120 and the key hole 114 of the fixture 110 are coupled to pass through the abutment 120 and at the same time. This will prevent loosening of the screws between the fixtures (110).

In this case, one to six key holes 124 and 114 may be formed at equal intervals.

As the present invention having the above-described configuration and operation can be variously modified and changed by those skilled in the art using the various embodiments described above, the true technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but the patent claims It should be determined by the scope.

The present invention constituted as described above is an unlocking room having an anti-rotation axle between the fastening member and the hollow hole of the abutment after the last tightening of the fastening member during the fastening of the fastening member of the fixture and the abutment. By matching the earth to prevent the screw loosening phenomenon of the fastening member by the micro-vibration, there is an effect that it is possible to semi-permanently maintain the bonding state of the artificial tooth.

In addition, the present invention allows the patient to fundamentally prevent physical and mental pain and economic loss due to the loosening of the screw according to the existing implant treatment method, the dentist can reduce the burden of heart due to surgical failure (re-operation) By doing so, it is effective to build a trust relationship between the patient and the doctor through a more stable procedure.

Claims (8)

Fixture 110 coupled to the alveolar bone; An abutment 120 axially coupled to an upper end of the fixture 100; And An anti-loosening tool 140 axially coupled in a vertical direction to prevent rotation between the fixture 100 and the abutment 120; Implant unit having a screw loosening prevention structure comprising a. Fixture 110 coupled to the alveolar bone; An abutment (120) axially coupled to the top of the fixture (110); A fastening member 130 screwed so that the abutment 120 is not separated from the fixture 110; And Key holes 125 and 135 formed to include half the inner diameter of the fastening member 130 and the inner diameter of the hollow hole 123 of the abutment 120; An anti-loosening tool 140 that is fitted with the key holes 125 and 135 to prevent rotation between the fastening member 130 and the abutment 120; Implant unit having a screw loosening prevention structure comprising a. The method of claim 2, The key holes (125, 135) is an implant unit having a screw loosening prevention structure, characterized in that formed 1 to 6 at equal intervals. The method according to claim 1 or 2, The anti-loosening tool 140 is anti-screwing, characterized in that consisting of the anti-rotation shaft projection 141 consisting of 1 to 6 and the connection ring 143, the rotation preventing projections 141 are coupled along the circumference. Implant unit having a structure. Fixture 110 coupled to the alveolar bone; An abutment 120 axially coupled to the top of the fixture 110 to form a polygonal hollow hole 123 in the center; A fastening member 130 which is screwed so that the abutment 120 is not separated from the fixture 110 and a wrench groove 134 having a polygon is formed at an upper center thereof; And A polygonal protrusion 145 is formed to be matched with the wrench groove 134 of the fastening member 130, and the upper corner of the polygonal protrusion 145 is aligned with the hollow hole 123 of the abutment 120. An anti-loosening tool 140 for forming the plate 147 in the horizontal direction; Implant unit having a screw loosening prevention structure comprising a. The method of claim 5, The anti-loosening tool 140 is equal to the number of angles formed by the polygonal projection 145 and the polygonal plate 147, and the thread loosening prevention structure is characterized in that each corner is formed in a straight line from the center. Implant unit having a. A fixture 110 coupled to the alveolar bone and having a screw hole 116 formed at the center of the upper end thereof, and having a lower key hole 114 formed around the screw hole 116; The screw unit 127 for coupling with the fixture 110 is integrally formed at the lower end, the wrench groove 122 is formed at the center of the upper end, and the upper key hole 124 is formed around the wrench groove 122. Abutment 120; And A bar-shaped anti-loosening tool 140 coupled to the key hole 124 of the abutment 120 and the key hole 114 of the fixture 110 at the same time; Implant unit having a screw loosening prevention structure comprising a. The method of claim 7, wherein The key hole (124,114) is an implant unit having a screwing prevention structure, characterized in that 1 to 6 are formed at equal intervals.

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