KR20200137365A - apparatus for removing gingiva in dental implant - Google Patents

Abstract

The present invention provides a tissue removing apparatus for a dental implant, which accurately and smoothly removes the gums covering the alveolar bone in a portion into which a fixture is to be implanted, thereby increasing a gum removal speed and significantly increasing the accuracy and completeness of implant placement. According to the present invention, the tissue removing apparatus comprises: a shank unit having a mounting portion formed on the upper end part thereof to be coupled to a dental drill device and having a coupling portion formed on the lower end part thereof; a cutting main body unit connected to the shank unit to rotate integrally, and including a cylindrical body part having an outer diameter corresponding to the inner periphery of a guide hole to be supported and rotated by a guide hole of a surgical guide which is fixed to the inside of the oral cavity to guide the implantation position of a fixture and having an opening formed on a faced side surface to allow a hollow part formed therein to communicate with the outside; a cutting main body unit connected to the lower end part of the body unit to be inclined so that the outer diameter thereof becomes narrower toward the lower part thereof and including a guide cutting part having a protruding cutting part protruding from a guide cutting blade formed along the lower edge of an introduction part having an inner part communicating with the hollow part; and a gum cutting unit provided on the inside of the cutting body unit and including a rotary cutting blade formed at an end part thereof to be disposed inside the guide cutting blade.

Description

Tissue removal device for implant {apparatus for removing gingiva in dental implant}

The present invention relates to a tissue removal device for an implant, and more particularly, to accurately and smoothly remove the gums covering the alveolar bone at the site where the fixture is placed, thereby improving the speed of removing the gums, and remarkably improving the accuracy and completeness of the implant placement. It relates to a tissue removal device for implants.

In general, an implant refers to a substitute that can replace human tissue when the original human tissue is lost, but in dentistry, it refers to implanting an artificial tooth. This is a procedure in which a fixture made of titanium, which does not have a rejection reaction to the human body, is planted in the alveolar bone from which the tooth has been removed to replace the lost root, and then the artificial tooth is fixed to restore the function of the tooth.

In the case of a general prosthesis or denture, the surrounding teeth and bones are damaged over time, but the implant can prevent damage to the surrounding dental tissue and can be used stably because there are no secondary caries. In addition, since the implant has the same structure as a natural tooth, there is no pain or foreign body sensation in the gums, and it can be used semi-permanently if it is well managed.

1 is a flow chart showing a conventional implant procedure.

As shown in Figure 1, the conventional implant procedure is the first procedure (s1, s2, s3, s4) in which a fixture is placed in the alveolar bone, and the time when the fixture is bone fused to the alveolar bone (3-6 months). ), and then attaching the abutment to fix the final prosthesis (s5, s6).

First, the first procedure is a gingival removal step (s1) to open the gums in the part where the teeth are missing, a multi-stage drilling step (s2) to form a perforation in which a fixture is to be placed, and a fixture placement step (s3), and an implanted fix. It consists of a step (s4) of coupling the temporary teeth to the chure.

In detail, in the gum removal step (s1), the gums are removed through a tissue punch or the like, and the alveolar bone at the position where the fixture is placed is exposed. Then, through a multi-stage drilling step (s2) on the exposed portion of the alveolar bone, a perforation for fixture placement is formed.

In this case, the multi-stage drilling step (s2) may include forming an initial hole, expanding the hole, forming a thread inside the hole, and removing the remaining alveolar bone inside the hole. It can be made in various ways depending on the type of drill used and the drilling method.

In addition, when the fixture is placed in the perforation formed through the multi-stage drilling step (s2) (s3), and the temporary teeth are coupled to the placed fixture (s4), the first procedure is completed.

Here, the fixture placed in the perforation serves as the root of the artificial tooth. Therefore, it is very important to form an accurate perforation in the multi-stage drilling step (s2) in order to rapidly and stably recover the alveolar bone forming bone fusion with the fixture, and to provide a stable bonding force between the alveolar bone and the fixture after bone fusion. It will determine the completeness of the artificial tooth formation through the implant procedure.

On the other hand, the gum removal device used in the conventional gum removal step is provided with a blade along a lower rim in a cylindrical body with an open lower side, and cuts the gum of a portion where a perforation is to be formed through the blade. At this time, the rim of the incision surface was cut to remove the gum along the rim using a scalpel or the like, or the cut gum was collected inside the cylindrical body and discharged to the outside.

However, when only the edge of the target incision surface is cut by the blade, there is a problem that additional work is required, such as having to remove and scrape the gum using a separate tool such as a scalpel or tweezers.

In addition, in the case of collecting the cut gum inside the cylindrical body, there is a problem in that the cut gum does not accurately flow into the cylindrical body. Moreover, there is a problem in that the gums collected inside the cylindrical body also flow downward during the cutting operation of the blade, so that the cut gums become entangled with the blade, thereby reducing the cutting force.

In addition, since it is difficult to remove the target incision surface smoothly, there is a problem in that the cutting effect is reduced, such as restraining the rotation of the blade or being caught between the gum and the alveolar bone outside the cut portion. Moreover, if the target incision surface is not smooth, there is a problem that the wound does not heal well and the healing period is prolonged.

Korean Patent Registration No. 10-1486702

In order to solve the above problems, the present invention accurately and smoothly removes the gums covering the alveolar bone at the site where the fixture is placed, thereby improving the speed of removing the gums, and improving the accuracy and completeness of the implant placement. It is a challenge to provide a removal device.

In order to solve the above problems, the present invention is provided with a mounting portion coupled to the dental drill device is formed on the upper end, the shank portion formed with a coupling portion at the lower end; It is connected to the shank part and rotates integrally, and has an outer diameter corresponding to the inner circumference of the guide hole so that it is supported and rotated by the guide hole of the surgical guide fixed inside the oral cavity to guide the placement position of the fixture, but the hollow part formed therein A cylindrical body having an opening formed on a side facing the outside to communicate with the outside, and connected to the lower end of the body to be inclined so that the outer diameter becomes narrower toward the bottom, but the inside is formed along the lower edge of the introduction part communicating with the hollow part. A cutting body including a guide cutting portion provided with a protruding cutting portion protruding from the guide cutting blade; And a gingival cutting unit provided on the inside of the cutting body and having a rotating cutting blade disposed on the inside of the guide cutting blade at an end thereof.

Here, the protruding cutting part is convexly protruded downward from one side of the horizontal line of the guide cutting blade, and the rotary cutting blade is preferably disposed to be spaced apart from the lower end of the protruding cutting part by a predetermined interval.

In addition, it is preferable that the guide cutting part is provided with a recessed cutting part that is rounded upward from the horizontal line of the guide cutting blade on the other side opposite to the protruding cutting part on one side.

In this case, the guide cutting part is preferably provided with a pair of protruding cutting parts that protrude downward from the horizontal line of the guide cutting blade along the edge of the guide cutting blade and face each other.

On the other hand, the inner end of the rotary cutting blade is disposed on the side of the rotation center, and the outer end is arranged to face the maximum protrusion of the protruding cutting part, and the rotational center part to guide the cutting material upward on the surface opposite to the rotation direction of the rotary cutting blade. It is preferable that an inclined surface extending to the side is formed.

In addition, it is preferable that the openings are provided in a pair, and are disposed opposite to the side portions of the body so as to face each other in the longitudinal direction of the cutting surface connecting the inner and outer ends of the rotary cutting edge.

Through the above solution means, the present invention provides the following effects.

First, as the protruding cutting part provided on the guide cutting blade that cuts the gum at the site where the fixture is placed is intensively formed on one side in the circumferential direction, the first contact with the upper surface of the gum and the pressing force is concentrated when rotation is pressed downward, By digging the gum along the rotational trajectory, a circular clean incision line can be quickly formed.

Second, as the rotating cutting blade for cutting the gum inside the rotational trajectory is disposed protruding below the horizontal line on the inside of the guide cutting blade, the protruding cutting part protruding below the horizontal line presses the gum downward and at the same time, the Since the rotary cutting blade is in contact with the upper surface of the gum to accurately cut the gum, the completeness of the removal of the gum can be significantly improved.

Third, the protruding cutting portion is provided as a surface that is finely inclined upward toward the introduction portion toward the inner end, so that the gum cut in the protruding cutting portion flows into the introduction portion along the inclined surface, so that the gum moves to the outside of the guide cutting portion. Since it does not leak and is easily cut by the gum cutting part, the gum cutting efficiency can be remarkably improved.

Fourth, the concave cutting part recessed upwards on one side of the guide cutting blade can not be removed from the incision surface of the gum outside the guide cutting blade when the guide cutting blade is inserted into the gum, and the entangled gum is cut to make the cut surface smooth. As it is formed, the incision wound can be healed quickly, so the safety of implant placement can be remarkably improved.

1 is a flow chart showing a conventional implant procedure.
Figure 2 is a cross-sectional view of an implant tissue removal device according to the first embodiment of the present invention.
Figure 3a is a perspective view showing a tissue removal device for an implant according to a second embodiment of the present invention.
Figure 3b is a cross-sectional view showing a tissue removing device for an implant according to a second embodiment of the present invention.
Figure 3c is a front view showing a tissue removing device for an implant according to a second embodiment of the present invention.
Figure 3d is a bottom view showing a tissue removal device for an implant according to a second embodiment of the present invention.
Figure 3e is an exploded perspective view showing an implant tissue removal device according to a second embodiment of the present invention.
Figure 4 is a schematic view of the use of the tissue removal device for an implant according to a second embodiment of the present invention.
5 is an exemplary view of a tissue removing apparatus for an implant according to a third embodiment of the present invention.

Hereinafter, a tissue removing apparatus for an implant according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, the tissue removal device for implants is used in the pre-placement process of multi-stage drilling to form perforations for the placement of fixtures during the implant placement process. In detail, the implant tissue removal device refers to a device for removing the gum covering the alveolar bone so that the alveolar bone at the position where the fixture is placed in the oral cavity is exposed, and may also be referred to as a tissue punch. In this case, the fixture is preferably understood as a device for fixing and supporting a prosthesis that is placed in the alveolar bone and disposed on the gum to replace the root of the lost tooth.

2 is a cross-sectional view of a tissue removing apparatus for an implant according to a first embodiment of the present invention.

As shown in Figure 2, the implant tissue removal apparatus 300 according to the first embodiment of the present invention includes a shank portion 310, a cutting body portion 320, and a gum cutting portion 330.

On the other hand, the implant tissue removal device 300 (400 of FIG. 3A, 500 of FIG. 4), which will be described below in each embodiment, is a basic device except for the guide cutting blade 323 formed at the introduction part of the cutting body part 320. The configuration is substantially the same. Accordingly, the same configuration is described and illustrated based on the second embodiment described later.

In detail, the shank 310 is coupled to a dental drill device such as a handpiece, and rotates integrally by receiving a rotational force. In addition, the cutting body 320 is provided at a lower end of the shank 310 to form a hollow hollow portion therein, and an opening is formed on the side portion so that the hollow communicates with the outside. Moreover, the gum cutting part 330 is provided inside the hollow shape of the cutting body part 320.

In addition, the cutting body 320 is connected to the shank portion 310 and rotated integrally, and includes a cylindrical body portion 321 and a guide cutting portion 322. Here, the guide cutting portion 322 is manufactured separately from the shank portion 310 and may be fixed to rotate integrally, and in some cases, may be integrally formed with the shank portion 310. That is, the shank part 310 may connect the dental drill device and the guide cutting part 322 to transmit the rotational force transmitted to the shank part 310 to the guide body part.

In addition, the guide cutting part 322 is obliquely connected to the lower end of the body part 321 so that the outer circumferential diameter becomes narrower toward the bottom, and an introduction part is formed therein so as to communicate with the hollow part. Meanwhile, in the introduction part, the guide cutting blade 323 is provided along the lower edge to cut the target gum at the fixture placement site. Here, when the guide cutting blade is rotated by direct contact with the gum at the fixture placement position, a circular cut line corresponding to the rotational trajectory of the guide cutting blade 323 is formed on the gum.

Further, the guide cutting blade 323 is provided with a protruding cutting portion 324 protruding convexly downward from one side of the horizontal line e1. In this case, the horizontal line (e1) is preferably understood as a reference line in the horizontal direction of the guide cutting blade 323.

In addition, it is preferable that the guide cutting blade 323 excluding the protruding cutting portion 324 has an edge formed in a horizontal direction along the horizontal line e1. At this time, the horizontal direction is not necessarily limited horizontally, and may be provided as a fine waveform having a reference line corresponding to the horizontal direction so as to encompass an error range that may occur when manufacturing the guide cutting blade 323 .

In detail, the protruding cutting part 324 first comes into contact with the upper surface of the gum during insertion to cut the gum. That is, it is preferable to understand that the protruding cutting part 324 substantially forms an incision line of the gum when the guide cutting blade 323 rotates.

On the other hand, the protruding cutting part 324 may be formed with a side edge of the guide cutting blade 323 protruding stepwise downward, but is formed in a curved shape convexly protruding downward from one side of the guide cutting blade 323 desirable. That is, the cross section of the guide cutting blade 323 viewed from one side has an end shape formed in a curved shape.

Accordingly, when the implant is placed, the protruding cutting part 324 is rotated and can be smoothly inserted into the gum, and a problem in which the gum is caught and torn at the stepped protruding part can be prevented in advance.

In addition, the gum cutting part 330 is provided inside the cutting body part 320, and a rotary cutting blade 331 for cutting the gum is formed at an end. At this time, the gum inside the incision line formed by the guide cutting blade 323 may be cut by the rotary cutting blade 331 and introduced into the introduction part.

Figure 3a is a perspective view showing a tissue removing device for an implant according to a second embodiment of the present invention, Figure 3b is a cross-sectional view showing a tissue removing device for an implant according to a second embodiment of the present invention, Figure 3c is of the present invention A front view showing a tissue removing device for an implant according to a second embodiment, Figure 3D is a bottom view showing a tissue removing device for an implant according to a second embodiment of the present invention, and Figure 3E is a second embodiment of the present invention. It is an exploded perspective view showing a tissue removal device for an implant according to, and Figure 4 is a schematic view of the use of the tissue removal device for an implant according to a second embodiment of the present invention.

As shown in Figures 3a to 4, the implant tissue removal apparatus 400 according to the second embodiment of the present invention includes a shank portion 410, a cutting body portion 420, and a gum cutting portion 430 do.

On the other hand, the shank portion 410 has a mounting portion 411 coupled to the dental drill device is formed on the upper end, wherein the dental drill device is a handpiece used to provide rotational force to the implant gum removal device, etc. It is a hand drill device. In this case, the rotational speed of the dental drill device is preferably set to about 300rpm. On the other hand, the rotational speed may be set higher or lower than 300rpm, and is set to a sufficient speed to cleanly cut the gums of the implantation site, but is set to be less than a preset limit speed so that the tissue punch for the implant is not shaken by rotational vibration. This is desirable.

In addition, the shank portion 410 has a coupling portion 412 coupled to the cutting body portion 420 at a lower end thereof. In this case, the mounting portion 411 may be provided in a D-cut shape, and when coupled to the dental drill device, it may be rotated integrally by receiving a rotational force.

In addition, the shank portion 410 may connect the dental drill device and the cutting body portion 420, and transmit a rotational force transmitted to the mounting portion 411 to the cutting body portion 420. At this time, the shank portion 410 may be formed irrespective of the diameter of the cutting body portion 420, but is preferably provided with a diameter smaller than the outer peripheral diameter of the cutting body portion 420.

In addition, the shank portion 410 may be provided in a cylindrical shape. Due to this, the shank portion 410 firmly supports the cutting body portion 420 when rotating at high speed, and durability can be improved by preventing rotational damage such as bending or twisting, as well as vibration due to rotational damage. This can prevent the drilling precision from decreasing.

In this case, the coupling part 412 preferably includes an extended outer circumferential surface 412b formed to be inclined to extend the outer circumferential diameter toward the lower end, and a coupling outer circumferential surface 412a coupled to the upper inner circumferential surface of the cutting body 420.

In this case, it is preferable that the maximum outer peripheral diameter of the extended outer peripheral surface 412b corresponds to or larger than the outer peripheral diameter of the cutting body 420. In addition, the coupling outer circumferential surface 412a is formed so that the outer circumferential diameter corresponds to the inner circumferential diameter of the cutting body 420 so that the coupling outer circumferential surface 412a and the inner circumferential surface of the cutting body 420 are closely coupled.

That is, the extended outer circumferential surface 412b is provided with a stepped stepwisely recessed along the outer circumference toward the end, and the coupling outer circumferential surface 412a is connected to the stepped step. Accordingly, the cutting body portion 420 may be stably connected to the shank portion 410 without being caught by the stepped jaws and being separated from the upper side of the coupling portion 412.

In this case, the coupling portion 412 and the cutting body portion 420 may be provided as separate members. In addition, the cutting body portion 420 provided as a separate member may be coupled by welding along the stepped portion while being fitted to surround the outer periphery of the coupling portion 412.

In addition, the cutting body part 420 is connected to the shank part 410 and rotated integrally, and includes a cylindrical body part 421 and a guide cutting part 422. At this time, it is preferable that the body portion 421 and the guide cutting portion 422 are provided integrally.

Meanwhile, referring to FIG. 4, the body portion 421 is inserted into the guide hole 12A of the surgical guide 11A for guiding the placement position of the fixture and is supported for rotation.

In detail, when the fixture is placed, a drill is used to form a perforation in the alveolar bone 4A at the position where the fixture is placed, and at this time, the surgical guide 11A to determine the exact location and wave direction at which the drilling operation was performed. Use an assistive device called.

Here, the surgical guide 11A is formed in correspondence with a three-dimensional integrated image including surface information on the object of the gingival part including a predetermined implant placement position in the oral cavity of the prosthetic subject. Meanwhile, the 3D integrated image may be obtained by matching a CT scan image and an oral scan image. And, the surgical guide (11A) is fixed by wrapping and fixing the periodontal tissue (teeth and gums), such as teeth and gums of the dental jaw or edentulous patient, the guide hole (12A) corresponding to the implant placement position is formed. In addition, the guide hole 12A is formed as a cylindrical hole penetrating the body of the surgical guide, and is preferably provided so as to support the drill device inserted inside and guide it up and down.

At this time, the body part 421 is inserted into the guide hole 11A and slides up and down to guide the target gum 3A to the position of the target gum 3A, but it is rotated inside the guide hole, so that the user can place the fixture. It is possible to easily remove the gum 3A of the correct part corresponding to.

In addition, the guide hole 12A may be provided with various diameters according to the type of natural tooth to be replaced with an implant. In detail, the fixture, which is the root of an artificial tooth, has dimensions such as 3.5mm, 4.0mm, 4.5mm, and 5.0mm, and accordingly, the diameter of the drill is about 3.0mm, 3.5mm, 4.0mm, 4.5mm, etc. Can be chosen.

That is, the guide hole 12A is selected and provided in a size corresponding to the diameter of the drill, and the body portion 421 is supported by the guide hole 12A and rotates with an outer diameter corresponding to the inner diameter of the coupling hole. It is preferable to be provided to have. At this time, the body portion 421 may be provided with an outer diameter that is slightly smaller than the inner circumference of the guide hole 12A so that the body portion 421 can be inserted into the guide hole 12A and rotated.

Meanwhile, a hollow portion is formed inside the body portion 421, and an opening 421b is formed on a side surface so that the hollow portion communicates with the outside. At this time, it is preferable to understand that the cutting material generated in the process of cutting the gum may flow into the hollow part, and the cutting material means the gum inside the incision line that is removed at the implant placement position.

In addition, the cutting material may flow out through an opening 421b communicating with the hollow part. In this case, the openings 421b are preferably provided in a pair, and are disposed opposite to each other on the side surfaces of the body 421 so as to face each other.

In addition, the body portion 421 is inserted into the guide hole 12A of the surgical guide 11A to remove the gum while being rotated and inserted to the maximum depth, the opening of the opening 421b It is preferable that the top height is formed to exceed the height of the surgical guide 11A. In this case, the height of the top is preferably understood as the height from the gum to the top of the opening 421b. Accordingly, the upper side of the opening 421b may be exposed to the outside of the guide hole 12A to communicate with the external space.

Accordingly, the cutting material introduced into the hollow part may not be accumulated inside the hollow part, but may flow out smoothly outward along the opening 421b, and it is not a target to be removed due to the accumulation of the cutting material and the flow in the downward direction. It can prevent sticking to the gums or alveolar bone.

Therefore, the gums at the fixture placement position can be accurately removed, and additional operations such as removing and scraping the entangled gums using a separate tool are not required, so that the surgical guide 11A is mounted and the gum is incised. Can be completed. Accordingly, since the drilling operation of the alveolar bone is rapidly followed, the implant placement time can be shortened and the efficiency of the product can be improved.

On the other hand, the guide cutting part 422 is obliquely connected to the lower end of the body part 421, the introduction part 422a is formed to communicate with the hollow part therein, and guides along the lower edge of the introduction part 422a A cutting blade 423 is provided.

In detail, it is preferable that the guide cutting part 422 is formed so as to be narrower downward from the portion connected to the body part 421. That is, the guide cutting part 422 is provided in a shape wider than the lower part, so that when rotating, the gum cut product flowing into the introduction part 422a easily flows upward, but the cut product flowing upward is lower by centrifugal force. Do not flow.

Accordingly, since the introduction part 422a expands to a wider space as it goes upward, the upward flow of the cutting material introduced through the introduction part 422a can be induced when rotating, thereby promoting discharge to the outside through the opening 421b. can do. In addition, since the lower flow of the cutting material is restricted, it is possible to prevent the cutting material from being entangled with the gums or alveolar bones that are not to be removed or adhered to the guide cutting blade 423, thereby enabling efficient removal of the gums without reducing the cutting force.

On the other hand, the guide cutting part 422 has an inner circumferential inclination inclination that is smoother than the outer circumferential inclination inclination of the guide cutting part 422 to form a thin edge surface at the end. In addition, the guide cutting blade 423 is preferably provided along the rim of the guide cutting portion 422.

At this time, when the guide cutting blade 423 directly contacts and rotates the gum at the fixture placement position, a circular cut line corresponding to the rotational trajectory of the guide cutting part 422 is formed on the gum.

In addition, the guide cutting blade 423 is inserted toward the alveolar bone and is separated from the entire tissue by cutting the gum. At this time, since the guide cutting part 422 is provided so that the outer diameter of the guide cutting part 422 expands upwardly, as the guide cutting blade 423 is inserted into the alveolar bone side, it is inserted by pressing the gum outside the guide cutting blade 423 outward. Accordingly, the outer surface of the guide cutting part 422 comes into close contact with the gum outside the guide cutting blade 423.

In addition, the guide cutting blade 423 is provided with a protruding cutting portion 424 convexly protruding downward from one side of the horizontal line e1, and the horizontal line e1 is provided on the other side opposite to the protruding cutting portion 424. ) A recessed cutting part 425 recessed to be rounded upward from the other side is provided.

At this time, the protruding cutting part 424 protrudes from one side of the edge of the guide cutting blade 423 between the pair of openings 421b disposed oppositely, and the recessed cutting part 425 includes the protruding cutting part 424 and It is preferable to be provided to face each other. That is, it is preferable to understand that the pair of openings 421b are arranged to face each other with respect to the maximum protrusion 424a protruding downward from the protrusion cutting part 424.

In detail, the protruding cutting part 424 first comes into contact with the upper surface of the gum upon insertion to cut the gum. That is, it is preferable to understand that the protruding cutting part 424 substantially forms an incision line of the gum when the guide cutting blade 423 rotates. However, it is not limited that the gum is cut only by the protruding cutting part 424, and the guide cutting blade 423 rotates to cut the gum, but the protruding cutting part 424 first contacts the gum It is desirable to understand that the incision is made. Accordingly, when the guide cutting blade 423 is pressed and inserted, the pressing force may be concentrated toward the protruding cutting part 424, so that the cut line may be formed cleanly.

At this time, the protruding cutting part 424 is provided to be slightly inclined upwards of the introduction part 422a, so that the outer end 424c of the protruding cutting part 424 is formed to protrude finely downward than the inner end 424b. desirable. Accordingly, the rim surface of the gum cut in a circular shape by the outer end 424c of the protruding cutting part 424 is the introduction part along the inclined surface formed from the outer end 424c toward the inner end 424b ( 422a) It may flow into the inside.

Therefore, the gums separated from the entire tissue through the protruding cutting part 424 and the gum residue decomposed by friction due to the rotation of the protruding cutting part 424 are not leaked out of the guide cutting part 422. It can flow smoothly to the introduction part (422a) side without. Moreover, since the gums of the implantation site cut by the protruding cutting part 424 flow inward along the inclined surface and are easily cut by the gum cutting part 430 inside the guide cutting part 422, the It is possible to improve the cutting efficiency of the gum cutting portion 430.

At this time, the recessed cutting part 425 is provided so as to be slightly inclined toward the lower side of the introduction part 422a so that the inner end 425b of the recessed cutting part 425 is formed to protrude finely downward than the outer end 425c. desirable. Accordingly, the gum outside the recessed cutting part 425 may first contact the inner end 425b of the recessed cutting part 425 and then pushed toward the outer end 425c and gently pressed.

In addition, when the guide cutting blade 423 is inserted into the gum, the concave cutting part 425 may additionally cut a gum that has not been cut by the protruding cutting part 424. In addition, the depressed cutting part 425 may cut a gum stuck to the cut surface of the lower side of the cut material without flowing upward, so that the cut surface may be formed smoothly.

Therefore, as the incision surface is cleanly cut by the depressed cutting part 425, damage to the area of the gum or alveolar bone other than the incision target is prevented, and the cut wound can be quickly healed, so that the completeness and safety of the placement are improved. It can be improved.

On the other hand, the gum cutting part 430 is provided on the inner side of the cutting body part 420, and a rotary cutting blade 431 disposed inside the guide cutting blade 423 is formed at an end thereof. At this time, the gum cutting part 430 serves to cut the gum inside the incision line cut through the guide cutting blade 423.

Here, the saying that the rotating cutting blade 431 is disposed inside the guide cutting blade 423 means that the rotating cutting blade 431 is disposed inside the circumference of the guide cutting blade 423, the guide cutting blade It is preferable to understand that it is disposed above the height of the lower end of the 423 and is provided to be recessed inward so as not to be exposed to the outside.

In addition, the gum cutting part 430 may extend from the lower surface of the coupling part 412 so that an end thereof may be disposed inside the guide cutting part 422, and may be provided integrally with the coupling part 412. have. Of course, the gum cutting portion 430 may be separately manufactured for convenience of manufacturing and may be coupled to the lower surface of the coupling portion 412.

In detail, as the guide cutting blade 423 is in contact with and rotated, the gum is cut along a circular incision line, and as the guide cutting blade 423 moves toward the alveolar bone, the gum is the introduction part 422a of the guide cutting part 422 ).

At this time, the gum cutting part 430 is introduced into the guide cutting part 422 and rotates in contact with the upper surface of the gum inside the incision line, and cuts the gum caught by the rotary cutting blade 431. Through this process, the gum is separated from the entire gingival tissue and is shredded.

Accordingly, the inner surface of the gum cut by the guide cutting blade 423 is cut into pieces in the inside of the gum cutting part 430 and flows into the hollow part, and smoothly passes through the upper side of the opening 421b. It may be discharged to the outside of the hollow part.

In addition, when removing the gums, it rotates at high speed to remove the frictional heat between the guide cutting unit 422 and the gum cutting unit 430 and the gums for cutting and cutting the gums, and washing water to clean blood or other residues generated during cutting. Is supplied. In addition, it is preferable that the operation of sucking the washing water is performed together.

At this time, since the gum separated from the entire gum tissue by the guide cutting part 422 is crushed through the gum cutting part 430 and flows in a finely manipulated state, it joins the flow of the washing water and is sucked together with the washing water. Can be removed.

Therefore, no additional work is required to remove the cutting residue such as the gum remaining at the place where the fixture is placed with a separate tool after removing the gum, and the implant placement time can be shortened because the gum can be completely removed with a single procedure. Can be.

In addition, the rotary cutting blade 431 is disposed on the inner side of the guide cutting part 422, the maximum protrusion 424a protruding to the outer end of the protruding cutting part 424 of the guide cutting part 422 It is preferable to be spaced apart from the upper side by a predetermined interval. Here, the preset interval is that the rotary cutting blade 431 is not exposed to the lower end of the maximum protrusion 424a, and when the maximum protrusion 424a touches the alveolar bone, the rotary cutting blade 431 is attached to the alveolar bone. It is desirable to understand that it means a gap that does not reach.

Here, a perforation is formed in the alveolar bone from which the gums have been removed through multi-stage drilling, and the initial drilling is performed from the center of the exposed alveolar bone, but if the exposed center is damaged, there is a risk of deteriorating the precision of the initial drilling operation, and subsequent drilling Can affect up to.

That is, when the guide cutting part 422 is inserted into the alveolar bone side and the maximum protrusion 424a touches the upper surface of the alveolar bone, the rotary cutting blade 431 is spaced apart from the upper surface of the alveolar bone by a predetermined distance. Can prevent damage.

Therefore, the rotary cutting edge 431 is provided to be spaced apart from the maximum protrusion 424a of the guide cutting part 422 to prevent damage to the alveolar bone, while crushing only the cut gums and discharging them smoothly. This can be improved.

On the other hand, the rotary cutting blade 431 is preferably disposed to protrude downward by a predetermined interval based on the horizontal line (e1) of the guide cutting blade 423. Here, it is preferable to understand that the predetermined spacing means a spacing protruding so that the maximum protrusion 424a is inserted into the gum and the upper surface of the pressed gum contacts the rotary cutting blade 431 when the gum is pressed. .

That is, the rotary cutting blade 431 may be spaced apart from the maximum protruding portion 424a and disposed to protrude downward rather than the horizontal line e1. Accordingly, when the protruding cutting part 424 presses the gum downward, the rotary cutting blade 431 contacts the upper surface of the gum, so that the gum can be accurately cut. Therefore, the completeness of the removal of the gums can be remarkably improved.

On the other hand, the inner end 431b of the rotary cutting blade 431 is disposed on the side of the rotation center, and the outer end 431c is disposed to face the maximum protrusion 424a. That is, it is preferable to understand that the outer end 431c is disposed so as to be spaced upward by a predetermined distance from the maximum protrusion 424a.

In this case, the rotary cutting blade 431 is preferably disposed so that the outer end 431c is in close contact with the inner circumference of the guide cutting part 422. Meanwhile, the outer end 431c may be spaced apart at fine intervals so as to supply moisture for cooling the rotary cutting blade 431.

In addition, it is preferable that a cutting surface 431a connecting the inner end 431b and the outer end 431c is formed on the rotary cutting edge 431. At this time, the cutting surface 431a is rotated about the rotational center axis in contact with the upper surface of the gum inside the incision line, and can be cut by scraping the gum along the rotational direction. On the other hand, the direction of rotation is preferably understood as the arrow direction shown in FIG. 3D.

Here, as the outer end 431c of the rotating cutting blade 431 is disposed opposite to the maximum protruding part 424a and a pair of the openings 421b are disposed opposite to the maximum protruding part 424a, a pair of It is preferable to understand that the openings 421b face each other based on the longitudinal direction of the cutting surface 431a.

In addition, as the rotary cutting edge 431 is formed such that the outer end 431c and the inner end 431b are spaced apart from the maximum protrusion 424a at equal intervals, the cutting surface 431a is the guide cutting edge 423 ) May be arranged in parallel with the horizontal line e1.

On the other hand, the gum cutting portion 430 may be provided in the shape of a cylinder divided into quarters, and includes a curved portion 433, a rear portion 434, and a side portion 435. In addition, an inclined surface 432 cut inclinedly is formed under the curved portion 433, and the rotary cutting blade 431 may be provided along a lower end of the inclined portion.

In detail, the curved portion 433 may pressurize the cutting material introduced into the hollow portion to flow along the inner circumference of the hollow portion, thereby promoting discharge of the cutting material through the opening 421b.

In this case, the curved portion 433 is preferably disposed to be in close contact with the inner circumference of the guide cutting portion 422. Here, the word "close contact" means that the crushed gums do not flow into the gap between the curved part 433 and the guide cutting part 422, but are spaced at fine intervals so that moisture for cooling the rotating cutting blade 431 is supplied. It is desirable to understand in terms of becoming.

Accordingly, washing water flows along the inner circumference of the guide cutting part 422 and the outer circumference of the gum cutting part 430, where frictional heat is generated during high-speed rotation, and not only can remove the heat of friction, but also the cut gums are guided by the guide. It is possible to prevent contamination by being caught between the cutting part 422 and the gum cutting part 430.

In addition, the rear portion 434 is formed to extend upwardly along a surface opposite to the rotational direction of the rotating cutting blade 431 so as to be connected to one end of the curved portion 433. Here, the opposite surface in the rotational direction refers to a surface that follows in the rotational direction when the gum cutting portion 430 is rotated to cut the gums.

At this time, the side portion 435 and the rear portion 434 are formed into a bent cross section so that the cut gums flowing into the introduction portion 422a can flow smoothly into the hollow portion, and between the introduction portion 422a and the hollow portion The flow path of can be secured.

On the other hand, the inclined surface 432 is preferably formed to be inclined upwardly extending to the surface opposite the rotational direction of the rotating cutting edge 431 to guide the cutting material to be cut by the rotating cutting edge 431 upward. Here, the surface facing the rotational direction refers to a surface preceding the rotational direction when the gum cutting part 430 is rotated to cut the gum flowing to the introduction part 422a of the guide cutting part 422.

At this time, the inclined surface 432 is provided by cutting the lower end of the gum cutting unit 430, the curved surface 433 is connected to the upper side of the rounded surface, and the lower end is connected to the rotary cutting blade 431, , A side end portion may be connected to the side portion 435.

Here, it is preferable that the gum cutting part 430 is arranged to be eccentric from the rotation center of the cutting body part 420. That is, when the cutting body part 420 is rotated, the inner end 431b of the rotation center side of the rotary cutting blade 431 rotates while drawing a small diameter circle and draws a larger diameter circle toward the outer end 431c. Can be rotated.

At this time, the inclined surface 432 is rotated and formed wider toward the center of rotation of the rotary cutting edge 431 to rotate the cutting material cut from the outer end 431c side of the rotary cutting edge 431 with a wide space. It can be guided to the center and discharged to the upper side. Accordingly, cutting efficiency can be prevented from reducing the cutting force by being accumulated in a narrow space of the outer end 431c of the rotating cutting edge 431 and the cutting material covering the rotating cutting edge 431 It can be improved.

5 is an exemplary view of a tissue removing apparatus for an implant according to a third embodiment of the present invention.

On the other hand, the tissue removing apparatus 500 for an implant according to the third embodiment is substantially the same as the second embodiment except for the guide cutting blade 523 formed in the introduction portion of the cutting body portion 520. Therefore, detailed description of the same configuration is omitted.

As shown in FIG. 5, the guide cutting blade 523 is formed along the lower edge of the cutting body part 520 in the tissue removing device 500 for the implant, and the gum inside the cutting body part 520 A cutting part 530 is provided.

In addition, the guide cutting blade 523 is provided with a protruding cutting portion 524 convexly protruding downward from one side of the horizontal line e1, and the protruding cutting portion 524 is further provided on the opposite side. Do. That is, it is preferable to understand that the guide cutting blade 523 is provided with a pair of the protruding cutting portions 524 to face each other.

Accordingly, since the pair of protruding cutting portions 524 cut the gum at the fixture placement position, an incision line may be quickly formed on the gum along the rotational trajectory of the guide cutting blade 523. In addition, the gingival inside the incision line may be cut by the gum cutting part 530 and flow upward, and may flow out through the opening 521b. Therefore, since the cutting time of the gum is shortened, the rapidity of implant placement can be improved.

Meanwhile, the implant tissue removal apparatus 300, 400, and 500 according to each embodiment may be manufactured by grinding after electrolytic polishing.

At this time, the electrolytic polishing method is a polishing method using an electrochemical reaction. By applying a voltage between the positive electrode and the negative electrode with a metal workpiece as an anode and an electrode as a negative electrode, the surface of the workpiece is polished by electrolysis. It is desirable to understand it as a construction method.

That is, if the base material of the metal material, which is the object to be processed, is used as an anode and electrolyzed at a high current density in the electrolyte for a short time, the protrusions on the surface of the base material are selectively dissolved and processed first, and the implant of the finished product is secondly processed by a grinding method. A tissue removing device for use can be manufactured.

Accordingly, the implant tissue removal device (300, 400, 500) manufactured by electrolytic polishing and grinding method includes the guide cutting blades (323, 423, 523) and the gum cutting part (330, 430, 530), etc. The external shape of the product can be manufactured in a more elaborate shape, and since corrosion resistance is improved, the precision and durability of the product can be improved.

In addition, terms such as "include", "comprise", "include" or "have" described above mean that the corresponding component may be present unless otherwise stated, It should be construed as not excluding components, but as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the art without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

300,400,500: Tissue removal device for implants
3A: gum 4A: alveolar bone
310,410,510: shank portion 320,420,520: cutting body
322,422,522: guide cutting part 324,424,524: protruding cutting part
330,430,530: Gum cutting section

Claims (6)

A mounting portion coupled to the dental drill device is formed on the upper end, the shank portion is formed on the lower end portion;
It is connected to the shank part and rotates integrally, and has an outer diameter corresponding to the inner circumference of the guide hole so that it is supported and rotated by the guide hole of the surgical guide fixed inside the oral cavity to guide the placement position of the fixture, but the hollow part formed therein A cylindrical body having an opening formed on a side facing the outside to communicate with the outside, and connected to the lower end of the body to be inclined so that the outer diameter becomes narrower toward the bottom, but the inside is formed along the lower edge of the introduction part communicating with the hollow part. A cutting body including a guide cutting portion provided with a protruding cutting portion protruding from the guide cutting blade; And
Doedoe provided on the inner side of the cutting body, an implant tissue removal device comprising a gum cutting portion at an end portion having a rotating cutting blade disposed on the inside of the guide cutting blade. The method of claim 1,
The protruding cutting part protrudes convexly downward from one side of the horizontal line of the guide cutting blade,
The rotary cutting blade is an implant tissue removal device, characterized in that the spaced apart from the lower end of the protruding cutting portion by a predetermined interval to the upper side. The method of claim 2,
The rotating cutting blade is disposed to protrude from the horizontal line of the guide cutting blade by a predetermined interval downward from the horizontal line of the guide cutting blade. The method of claim 2,
The tissue removing apparatus for implants, wherein the guide cutting blade is provided with a recessed cutting part which is rounded upward from the horizontal line of the guide cutting blade on the other side opposite to the protruding cutting part on one side. The method of claim 1,
The guide cutting part is provided with a pair of protruding cutting parts which protrude downward from the horizontal line of the guide cutting blade and face each other along the edge of the guide cutting blade. The method of claim 1,
An inclined surface extending toward the center of rotation is formed on a surface opposite the rotational direction of the rotary cutting edge to guide the cutting material upward,
The inner end of the rotary cutting blade is disposed on the side of the rotation center, and the outer end is disposed to face the maximum protrusion of the protruding cutting part,
The openings are provided in a pair and disposed opposite to the side surfaces of the body so as to face each other in a longitudinal direction of a cutting surface connecting the inner end and the outer end.

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