WO2015167049A1 - Barrier membrane for implant - Google Patents

Abstract

The present invention relates to a barrier membrane for an implant, and in particular, the present invention provides the benefit of facilitating guided bone regeneration by maintaining the shape of the absorbent barrier membrane and retaining the space by means of the barrier membrane by comprising: an absorbent barrier membrane which covers an implant post bonded to the alveolar bone and bone graft material, and which is absorbed into the osseous tissue after the guided bone regeneration; and a non-absorbent barrier membrane bonded to the outer surface of the absorbent barrier membrane to maintain the shape thereof.

Description

Implant Shield

The present invention relates to an implant shield used in the implant procedure, and more particularly, to an implant shield covering an bone graft used during bone induction regeneration.

The dental implant procedure is generally completed by dissecting the patient's gums and inserting an implant post into the gum bone (called 'alveolar bone') therein, and joining an artificial tooth (Crown) to the implant post.

In order to perform an implant, the alveolar bone in which the fixture is placed needs sufficient length and width. Bones are often absorbed or lost by other tissues. In this case, bone guidance regeneration (also called 'bone regeneration') is required. Unlike other tissues, bone has the only potential to fully recover the body's structure. However, a basic condition is required for bones to regenerate in the correct form: mechanical stability and abundant blood supply.

Biological requirements for bone induction regeneration include blood supply, stabilization, osteoblasts, limited space, space retention, and incisional wounds. Several surgical procedures are performed for this purpose. Providing proper pressure on the bone graft can increase adhesion and help bone formation.

In particular, shielding membranes are used for stabilization and limited space. The shield helps protect blood clots, prevents soft tissue cells from migrating to bone defects, and allows bone cells to settle.

In order to apply the shielding film, it is necessary to cut to fit the shape and size according to the range of bone defects and bone graft material, which causes a problem of delayed operation time and difficulty in operation.

The shield should be physically stable. More specifically, when the shielding membrane is not properly fixed, bone healing is inhibited by displacement, movement, external impact, etc. of the bone graft during the healing process, and there is a problem in that it does not promote the desired amount of bone regeneration.

If only the absorbent shielding film is used alone, it is difficult to properly function as a support. On the other hand, the non-absorbent shielding membrane using a metal material such as titanium (Ti) is advantageous in that it is easy to secure a period required for cell proliferation by maintaining its shape and serving as a support. However, since the non-absorbable shielding film of titanium is not absorbed into the tissue, the burden to be removed through surgery after a certain period of time and the operation during the procedure is difficult.

Embodiments of the present invention to provide a double shield membrane for implants that can be effectively performed osteoinduction.

According to an aspect of the present invention, the absorbent shielding membrane which covers the implant post and bone graft material coupled to the alveolar bone, and is absorbed by the bone tissue after bone induction regeneration, and is coupled to the outer surface of the absorbent shielding membrane to maintain the shape of the absorbent shielding membrane It is possible to provide a double shielding membrane for an implant including a non-absorbing shielding membrane.

Here, the implant post, the bone tissue coupling portion to be inserted into the alveolar bone, and formed integrally on the upper side of the bone tissue coupling portion, and the crown coupled to the upper is formed with a female screw for coupling the crown so as to be coupled through the crown fixing bolt. And a crown connection. In addition, the non-absorbent shielding film may have a plurality of through-holes that allow at least one of blood and bone forming components to pass therethrough. In addition, each of the absorbent shielding film and the non-absorbent shielding film may be formed as a planar film. In addition, the surface area of the non-absorbent shielding film may be formed smaller than the surface area of the absorbent shielding film. In addition, the non-absorbent shielding film may be attached to the absorbent shielding film so as to include an inner region of the absorbent shielding film. In addition, the non-absorbent shielding film has a protrusion protruding toward the absorbent shielding film and penetrating a portion of the absorbent shielding film, wherein the absorbent shielding film and the non-absorbent shielding film are formed by the absorbent shielding film and the non-absorbent shielding film. Can be fixed In addition, the non-absorbent shielding film may include a circular shaped circular portion. The non-absorbent shielding film may further include a wing extending radially from the circular shape. In addition, a plurality of wing parts may be provided, and the non-absorbing shielding film may further include a wing support part connecting and supporting a pair of adjacent wing parts among the plurality of wing parts. In addition, the wing portion may be formed in each of the fastening holes at the end of the circular shape, the fastening hole may be penetrated through the fastening mechanism for fixing the wing to the alveolar bone. In addition, the absorbent shielding film may include a protrusion formed to protrude from one surface. In addition, the protruding portion may be formed on a surface of the absorbent shielding film that is not attached to the non-absorbing shielding film. In addition, the protrusion part of the absorbent shielding film may be formed of a material different from that of other parts of the absorbent shielding film. The non-absorbent shielding film may be formed of any one of a titanium metal film or a metal film in which titanium is plated on a film of one metal material having a higher elasticity than the titanium material. In addition, the non-absorbent shielding film may be a plastic film.

Implant shielding film according to the present invention, the protrusion is formed on one surface of the membrane, is coupled to the alveolar bone is fixed to the implant post in such an operation that the protrusion is forcibly fitted into the recess of the implant post formed with a recess on the upper surface. .

Here, the implant post, the bone tissue coupling portion to be inserted into the alveolar bone, and formed integrally on the upper side of the bone tissue coupling portion, the crown coupled to the upper crown coupling is formed by the female screw portion for coupling through the crown fixing bolt. A crown connection part may be included, and the female threading portion for joining the crown may be the concave part. In addition, the implant post, the bone tissue coupling portion to be inserted into the alveolar bone, and formed integrally on the upper side of the bone tissue coupling portion, and the crown coupled to the upper crown coupling female threaded portion is formed so as to be coupled through the bolt for fixing the crown. A crown connection portion and a temporary bolt coupled to prevent contamination of the female thread coupling portion before coupling the crown to the female thread coupling portion, and the concave portion may be formed on an upper surface of the temporary bolt. In addition, the concave portion may be formed to have a horizontal cross section having a regular polygonal shape, and the protrusion may be fitted to the concave portion, but the horizontal cross section may have a circular shape. The protrusion may be formed to have a horizontal cross section having a regular polygonal shape, and the recess may be fitted with the protrusion, and the horizontal cross section may have a circular shape. In addition, the protrusion may have any one of a cylinder, a cone, a hemisphere, and a sphere. Further, the diameter of the horizontal cross section of the protruding portion is smaller than the shortest separation distance of the inner ends opposing to each other with respect to the center of the horizontal cross section of the concave portion, and the longest of the inner ends opposing to each other based on the center of the horizontal cross section of the concave portion. It can be greater than the separation distance. In addition, the diameter of the horizontal cross section of the concave portion is smaller than the shortest separation distance of the outer edges opposed to each other with respect to the center of the horizontal cross section of the protrusion, and the longest of the outer edges facing the injury based on the center of the horizontal cross section of the protrusion. It can be greater than the separation distance. In addition, the implant shielding membrane may include an absorbent shielding membrane covering the implant post and the bone graft material, and the protruding portion, and a non-absorbing shielding membrane that is coupled to an outer surface of the absorbent shielding membrane to maintain the shape of the absorbent shielding membrane. have. The protrusion may penetrate the absorbent shielding film to couple the non-absorbent shielding film to the absorbent shielding film. In addition, the non-absorbent shielding film may include a circular shape having a circular shape, and the protrusion may be provided at the circular shape. The implantable shielding membrane may include an absorbent shielding membrane having the protruding portion and covering the implant post and the bone graft material, and a nonabsorbable shielding membrane coupled to an outer surface of the absorbent shielding membrane to maintain the shape of the absorbent shielding membrane. have. In addition, the protruding portion may be provided on a surface of the absorbent shielding film to which the non-absorbing shielding film is not attached. In addition, a plurality of through holes may be formed in at least some regions of the non-absorbent shielding membrane to allow at least one of blood and bone forming components to pass therethrough.

Embodiments of the present invention have the effect of using the titanium used as the non-absorbent material in the absorbent shield of the collagen material, to facilitate the bone induction regeneration through maintaining the shape of the absorbent shield and the space by the shielding.

In addition, embodiments of the present invention can be a bone induction regeneration without side effects on human infection, and may have a sufficient holding power and stable space securing power so that the bone graft does not deform.

In addition, embodiments of the present invention has the effect of facilitating the implant procedure by facilitating the binding process to the implant post.

1 is a schematic diagram showing that the dental implant device is placed,

2 is a cross-sectional view showing a cross section of the implant mechanism;

3 is a cross-sectional view showing that the shielding membrane covers the bone graft material,

4 is a bottom view of an implant shield according to an embodiment of the present invention,

5 is an exploded perspective view illustrating a coupling state of an implant shield and an implant post according to an embodiment of the present invention;

Figure 6 is a cross-sectional view showing the cross section of the alveolar bone when the implant post procedure is applied, and is a cross-sectional view in the direction parallel to the dental dentition,

7 is a cross-sectional view showing a cross section when the implant post procedure is applied, and is a cross-sectional view in a direction perpendicular to the dental direction,

8 is a plan view showing a shield for an implant according to another embodiment of the present invention,

FIG. 9 is a plan view illustrating a modification of the shielding membrane for implants illustrated in FIG. 8;

10 and 11 are plan views illustrating various modifications of the non-absorbent shielding film shown in FIG. 9,

12 is a plan view showing a shield for an implant of another embodiment of the present invention,

FIG. 13 is a cross-sectional view illustrating a cross section of an alveolar bone in which the shielding membrane for implants according to FIG. 12 is performed.

14 is a perspective view showing an implant shield according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of an implant double shielding membrane according to the present invention will be described in detail. The accompanying drawings show exemplary forms of the present invention, which are provided to explain the present invention in more detail, and the technical scope of the present invention is not limited thereto.

A dental implant device generally refers to an artificial dental structure formed by implanting a fixture, which is an artificial tooth root, at a part or a whole where a tooth is lost, thereby adhering it to the alveolar bone, and fixing the dental prosthesis to the artificial tooth root. The term implant can be used broadly to encompass such a concept as a dental procedure and can be used as narrowly as a fixture. In the present specification, the implant or implant structure may be mainly used as a general artificial tooth structure.

1 is a schematic diagram showing that the dental implant mechanism is implanted, Figure 2 is a cross-sectional view showing a cross section of the implant mechanism.

Referring to FIG. 1, the dental implant apparatus may include a bone tissue coupling part 10, a crown connection part 20, an abutment 30, and a crown 40. For convenience of explanation, hereinafter, the bone tissue coupling part 10 and the crown connection part 20 will be referred to as an implant post 1.

Bone tissue coupling portion 10 is coupled to the alveolar bone (B) covered with gingiva (gum) (G) to form an artificial tooth root. The bone tissue coupling part 10 may be referred to as a fixture, an implant in a narrow sense, or the like.

The crown connection part 20 may have a lower end connected to the bone tissue coupling part 10 and an abutment 30 coupled to the upper end. The crown connection portion 20 is preferably formed integrally with the bone tissue coupling portion (10).

The implant has a detachable and detachable type in which the crown connection 20 is integrally formed with the abutment 30. The separate type may be divided into an internal type and an external type according to the coupling structure of the crown connection part 20 and the abutment 30. Although FIG. 1 illustrates an external type, embodiments according to the present invention can be applied to both an internal type and an external type.

The outer circumferential surface of the crown connection portion 20 may be formed to protrude so that the abutment 30 is inserted, and may be formed in various shapes. For example, the crown connection 20 may be in the form of a polygonal column. A groove may be formed in the abutment 30 so that the crown connection part 20 may be inserted, and the shape of the groove may also be formed to correspond to the outer surface shape of the crown connection part 20. Specifically, the groove in the abutment 30 may be a groove having a polygonal pillar shape when the crown connection part 20 is a polygonal pillar. At this time, the crown connection portion 20 is inserted into the abutment 30 as described above, and the outer surface of the crown connection portion 20 and the inner surface of the abutment 30 correspond to each other to the abutment on the crown connection portion 20. After combining the 30 can be prevented that the crown 40 is rotated or shifted position.

The upper surface of the crown connecting portion 20 may be formed with a female screw portion 22 (hereinafter, referred to as a 'female thread portion') for the crown coupling recessed toward the bone tissue coupling portion 10. The abutment 30 may include an insertion hole 30b into which the crown coupling bolt 50 is inserted. The crown fixing bolt 50 may firmly fix the crown 40 by engaging and fixing at least one of the abutment 30 and the crown connecting portion 20.

The crown 40 forms the appearance of an artificial tooth. Crown 40 may be referred to as a crown, an artificial tooth, or the like. At this time, the crown 40 may be installed in the crown connection portion 20 by being formed in the abutment 30 in the future.

After the implant procedure, the cover screw (temporary bolt) 150 may be temporarily coupled to the female screw portion 22 to prevent soft tissue from entering the female screw portion 22. The temporary bolt 150 as described above may include a bolt recess 153 into which a wrench or the like may be inserted. In this case, the shape of the hexa-hole 153 may be formed in various ways. For example, the bolt recess 153 may be polygonal. In addition, the bolt recess 153 may be a cross-shaped or straight groove. The bolt recess 153 may have any one of a cylinder, a cone, a hemispherical shape, and a spherical shape in addition to the above case. However, hereinafter, for convenience of description, the bolt recess 153 will be referred to as a hexa-hole 153 having a hexagonal shape among polygons.

Meanwhile, the implant post 1 as described above may be referred to as being divided into a body and a head. The body of the implant post 1 refers to the part that is inserted into the pubis, and the head of the implant post 1 refers to the upper part of the body and refers to the part where the crown is joined. In most cases, the head of the implant post 1 can be understood as the same portion as the crown connection 20.

Temporary bolt 150 may be coupled to the female screw portion 22 to which the crown fixing bolt 50 is coupled. Among the terms used below, the recessed portion of the implant post 1 is fastened to prevent contamination of the female screw portion 22 and / or the female screw portion 22 formed in the crown connection portion 20 for fixing the crown 40. The bolt recess 153 formed in the temporary bolt 150 will be referred to. In this embodiment, the female screw portion 22 refers to a horse including a portion to which the screw is coupled, and may further include a space other than the screw coupling portion.

1 and 2 have shown, but not limited to, a screw retaining method for fixing the crown (crown) to the implant post 1 (or fixture) or abutment 30 by screws. Although not shown in the present specification, the abutment 30 is screwed to the fixture, and a separately manufactured crown is disposed on the fixed abutment 30, with the crown and abutment interposed therebetween with dental cement. Embodiments according to the present invention may also be applied to the cement-retaining method of attaching the cement 30.

3 is a cross-sectional view showing that the implantable shielding membrane 121 covers the bone graft material 60 (also referred to as "bone graft material").

Referring to Figure 3, during implantation, the patient's gums are incised and then the implant post 1 is inserted into the alveolar bone B therein. In case of lack of alveolar bone (B) Grafted bone regeneration (GBR) to increase the alveolar bone (B) by implanting angular artificial bone into the insufficient alveolar bone (B) or inserting a powdered artificial bone (bone graft 60) ) Can be performed. After the bone graft 60 is filled, the implanted bone graft 60 can maintain the required shape, and the double shield membrane 121 for implants can be used to prevent soft tissue intervention and induce bone tissue inflow.

As described above, the double shielding membrane 121 for the implant covers the implant post 1 and the bone graft material 60 on the alveolar bone B, and the absorbent shielding membrane 121A and the absorbent shielding membrane 121A absorbed by the bone tissue after osteoinduction regeneration. It may include at least one of the non-absorbent shielding film 121B coupled to be exposed to the outer surface of the) to maintain the shape of the absorbent shielding film 121A. In this case, for the convenience of description, the following description will be made with reference to a case where both the absorbent shielding film 121A and the non-absorbing shielding film 121B are included.

The double shielding membrane 121 for implants is largely classified into absorbency and non-absorbency regardless of the division used to describe the technical features of the present invention described above. The absorptive shielding membrane 121A is a product made of a biodegradable material to perform a function of a barrier for a certain period of time and then decompose and be absorbed into a tissue. It is divided into cross-linked type and non-cross-linked type, and it is absorbed from minimum 2 weeks to maximum 54 weeks and does not require additional removal technique. Even if the absorbent shield 121A is exposed to the outside or damaged, it acts as a barrier and has a low risk of infection.

Absorbent shield (121A), which is mainly made of collagen, polylactic acid, and polyglactic acid, does not require secondary surgery, prevents the migration of epithelial cells, forms a space, and is selective. Induces cell proliferation and bone regeneration. In addition, the absorbent shielding film 121A is elastic and is used for the purpose of blocking mechanical stress applied to the wound.

For example, the absorbent shielding film 121A may be representative of collagen, and is usually made by treating collagen obtained from an animal tendon or the like. Such an absorbent shielding membrane 121A is known to be somewhat delayed in bone regeneration than the non-absorbing shielding membrane, and has less side effects than the non-absorbing shielding membrane 121B and is excellent in safety.

However, when only the absorbent shielding film 121A is used alone, the space securing ability is somewhat lower than that of the non-absorbing shielding film 121B, and the effect as a support is small.

On the other hand, the non-absorbent shielding film 121B using a metal material such as titanium (Ti) is advantageous in that it is easy to secure a period required for cell proliferation by maintaining its shape and serving as a support.

4 is a bottom view of an implant shield according to an embodiment of the present invention, Figure 5 is an exploded perspective view showing a coupling state of the implant shield and the implant post according to an embodiment of the present invention, Figure 6 is an implant The cross section of the alveolar bone when the post procedure is applied, which is a cross-sectional view in the direction parallel to the dental dentition, Figure 7 is a cross-sectional view showing a cross section when the implant post procedure is applied, is a cross-sectional view of the direction perpendicular to the dentition direction.

4 to 7, the double shielding membrane 121 for implants may include a planar film and a protrusion 122 protruding from the center of the film. Here, the planar film means any one of the absorbing shielding film 121A and the non-absorbing shielding film 121B.

That is, the material of the planar implant double shielding membrane 121 may be a generally used dental shielding membrane. In particular, the implant double shielding membrane 121 may be a nonabsorbing shielding membrane 121B formed of a nonabsorbing material such as titanium. In addition, the implant double shielding membrane 121 may be an absorbent shielding membrane 121A formed of an absorbent material such as collagen so as to be easily cut in accordance with the bone loss part. The double shielding membrane 121 for the implant may be a dual structure of the non-absorbent shielding film 121B and the absorbent shielding film 121A. Hereinafter, for convenience of description, the implant double shielding membrane 121 will be described in detail with reference to a case where the dual structure of the absorbent shielding membrane 121A and the non-absorbent shielding membrane 121B is used.

The protrusion 122 formed on the double shielding membrane 121 for the implant may be formed on one of the absorbent shielding film 121A or the non-absorbing shielding film 121B. At this time, the protrusion 122 is preferably a metallic material such as titanium. Hereinafter, the protrusion 122 will be described in detail with reference to a case where the protrusion 122 is formed on the non-absorbent shielding film 121B.

The implant post 110 may have a female thread portion (not shown) for coupling with an artificial tooth (dental 40). In this case, the implant post 110 may refer to the body itself, and may be a concept further including a temporary bolt (cover screw) 150 for preventing foreign matter from being caught in the female screw portion of the implant post 110. The protrusion 122 may be coupled to the female screw portion formed in the crown connection portion 113, which is the upper portion of the implant post 110, or may be coupled to the recess 153 of the temporary bolt 150. The protrusion 122 may be formed to correspond to the female threaded portion of the implant post 110 or the recessed portion 153 of the temporary bolt 150. However, hereinafter, the protrusion 122 will be described in detail with reference to the case where the protrusion 122 is inserted into and fixed to the recess 153 of the temporary bolt 150.

Specifically, during the implantation procedure, in order to protect the female threaded portion of the implant post 110, a temporary bolt 150 is generally used. The body 111 of the implant post 110 is inserted into the alveolar bone B. As described above, a female screw portion is formed in the crown connection portion 113, which is an upper portion of the body 111, so that the male screw portion 152 of the temporary bolt 150 may be coupled thereto.

In particular, referring to FIG. 5, the implant double shielding membrane 121 may be fixed to the temporary bolt 150 by the protrusion 122. The protrusion 122 may be fitted into the recess 153 formed in the head 151 of the temporary bolt 150. The protrusion 122 may be fit to the corresponding recess 153. In detail, the size of the protrusion 122 may be larger than that of the recess 153. At this time, the cross section of the recess 153 perpendicular to the longitudinal direction of the recess 153 may be a regular polygon such as a regular hexagon. In addition, the protrusion 122 is preferably a cylinder, cone, or hemispherical shape. In particular, since the protrusion 122 and the recess 153 are different in shape, the temporary bolt 150 may be smoothly removed in the future.

On the other hand, the protrusion 122 as described above is not limited to the above shape may be formed in a regular polygon, such as a regular hexagon. In this case, the shapes of the protrusion 122 and the recess 153 may be different from each other. However, hereinafter, the concave portion 153 will be described in detail with reference to a case where the concave portion 153 is formed in a regular polygonal shape for convenience of description.

In such a case, the diameter of any one cross section of the protrusions 122 is shortest at the inner end facing each other with respect to the center of the cross section of the recess 153 so that the protrusion 122 is appropriately fitted to the recess 153. It may be larger than the separation distance, it may be smaller than the longest separation distance of the inner end facing each other with respect to the center of the cross section of the recess 153.

On the other hand, when the protrusion 122 rotates the implant double shielding membrane 121 in a state in which the protrusion 122 is pressed into the recess 153 of the temporary bolt 150, the implant double shielding membrane 121 with respect to the temporary bolt 150. You can do relative circular motions. Accordingly, the implant double shielding membrane 121 may be mounted vertically to the implant post 110 after determining the position and direction of the implant double shielding membrane 121 at the time of the procedure. The error can be easily corrected by rotating the double shielding film 121.

6 and 7, the implant double shielding membrane 121, the implant post 110 is inserted into the alveolar bone B, the temporary bolt 150 is fixed to the implant post 110, the alveolar bone (B) The bone implant 130 is placed around the implant, and the double shielding membrane 121 for the implant is coupled to cover the bone implant 130 and the temporary bolt 150.

8 is a plan view showing an implant shield according to another embodiment of the present invention.

Referring to FIG. 8, the double shielding membrane 121 for implants is a nonabsorbable shielding membrane 121B as a nonabsorbent material such as a planar absorbent shielding membrane 121A and a metallic material bonded to one surface of the absorbent shielding membrane 121A as an absorbent material. ) May be included. The nonabsorbable shielding film 121B may be attached to the absorbing shielding film 121A in a frame structure.

More specifically, the absorbent shielding film 121A and the non-absorbing shielding film 121B are formed in a planar film, and the non-absorbent shielding film 121B has a smaller surface area than the absorbent shielding film 121A, and It is fixedly attached to the inner area. Herein, the inner region of the absorbent shielding film 121A may be understood to mean one surface of the absorbent shielding film 121A facing in the direction in which the implant post 110 is provided. That is, the protrusion 122 is formed on the non-absorbent shielding film 121b, and the protrusion 122 penetrates the absorbent shielding film 121A to fix the non-absorbent shielding film 121B on the inner region of the absorbent shielding film 121A. Do it.

In this case, the protrusion 122 may be formed on the absorbent shielding film 121A. When the protrusion 122 is formed on the absorbent shielding film 121A as described above, the protrusion 122 may be formed of a metal material such as titanium that is different from the absorbent shielding film 121A. In particular, when the protrusion 122 is formed on the absorbent shield film 121A, the protrusion 122 may be formed on one surface of the absorbent shield film 121A to which the non-absorbent shield film 121B is not attached. However, hereinafter, the protrusion 122 will be described in detail with reference to a case where the protrusion 122 is integrally formed with the non-absorbing shielding film 121B.

In the double shielding membrane 121 for implants, the non-absorbent shielding film 121B may include a circular shaped portion 123. Circular shape 123 may be provided with a protrusion 122 as described in FIG. The protrusion 122 may be formed on the rear surface when the surface shown in FIG. 8 is referred to as a surface. That is, FIG. 8 may be referred to as a rear view of FIG. 4.

The protrusion 122 may be directly connected to the circular shape 123. For example, the protrusion 122 may be combined with the circular shape 123, formed at the same time as the circular shape 123, or formed by drawing or embossing the circular shape 123. Can be. That is, the protrusion 122 may be integrally formed with the circular shape portion 123 and may protrude in the bottom direction of the absorbent shielding film 121A through the absorbent shielding film 121A.

The protrusion 122 has a circular cross section so that the implant 122 includes the absorbent shielding film 121A and the non-absorbing shielding film 121B even when the protrusion 122 is inserted into the recess 153 of the temporary bolt 150. When the dual shielding membrane 121 is rotated, a relative circular motion with respect to the temporary bolt 150 may be possible. Therefore, when the double shielding membrane 121 for the implant is twisted and coupled to the implant post 110, the error can be easily corrected.

As described above, the protrusion 122 may have a cylindrical shape, a conical shape, a hemispherical shape, or a spherical shape such that the protrusion 122 has a circular cross section.

In particular, since the protrusion 122 fits into the recess 153 of the temporary bolt 150 as described above, the double shielding membrane 121 for the implant is fixed without moving and does not have a separate fastening means. The double shielding membrane 121 for the implant may effectively cover the periphery of the implant post 110.

The nonabsorbable shielding film 121B may further include wing portions 124 extending in four radial directions from the circular shape portion 123. In addition, the non-absorbent shielding film 121B may further include a support part 125 connecting and supporting the adjacent wing parts 124.

The wing 124 of the non-absorbent shielding film 121B extending radially from the circular shape 123 may support the absorbent shielding film 121A, and the support 125 may support the wing 124. Therefore, the absorbent shielding film 121A can be easily processed (cutting, etc.), and the elasticity and rigidity of the absorbent shielding film 121A can be maintained by the wing 124 and the support 125 of the nonabsorbable shielding film 121B.

The non-absorbent shielding film 121B may be a titanium material or may be plated with titanium on an elastic material film having a higher elasticity than titanium. Titanium has a higher elasticity and strength than the general absorbent shielding film 121A, but has a disadvantage in that its shape is easily changed by external pressure and does not return to its original state. In order to compensate for these disadvantages, titanium plating is performed on the metal of the elastic material, thereby providing a shielding layer that is harmless to the human body while maintaining homeostasis according to external pressure.

In addition, the non-absorbent shielding membrane 121B serves as a support when the bone implant 60 is covered using the double shielding membrane 121 for the implant to maintain the shape of the double shielding membrane 121 for the implant. This is because it may be vulnerable to external pressure when it is composed of only the absorbent shielding film 121A. In addition, the double shielding membrane 121 for the implant can cope with external pressure by the non-absorbent shielding membrane 121B, thereby preventing deformation or movement of the powdered bone graft 60 filled in the bone loss part. Physical stability can be maintained, resulting in an improved effect on bone remodeling.

The implant double shielding membrane 121 of FIG. 8 has a non-absorbent shielding membrane 121B attached to the upper portion of the absorbent shielding membrane 121A to maintain its shape, and a protrusion of a non-absorbent metal material under the implantable double shielding membrane 121. A 122 may be formed to be fixed to the recess 153 of the temporary bolt 150 illustrated in FIG. 3.

FIG. 9 is a plan view illustrating one modified example of the double shielding membrane for implants illustrated in FIG. 8, and FIGS. 10 and 11 are plan views illustrating various modified examples of the nonabsorbable shielding membrane illustrated in FIG. 9.

Referring to FIG. 9, the implant double shielding membrane 121 may include at least one of an absorbing shielding film 121A and a non-absorbing shielding film 121B. The non-absorbent shielding film 121B may include a circular shaped portion 123 having a protrusion 122, and may further include at least one of a wing 124 and a support 125.

For example, as shown in FIG. 10, the non-absorbent shielding film 121B may further include a bar type wing 124 in the circular shape 123. As illustrated in FIG. 9, the circular shape portion 123 may further include a wing 124 and a support 125 supporting the wing 124.

The detailed description of the absorbent shield film 121A, the circular shaped portion 123, the wing portion 124, and the support portion 125 is replaced with the above description with respect to FIG.

9 and 10, a plurality of through holes 180 may be formed in at least one of at least one of the circular shape part 123, the wing part 124, and the support part 125. The non-absorbent shielding membrane 121B does not allow blood or bone formation components to pass therethrough, but the bone graft material inside the double shielding membrane 121 for implantation of blood or bone formation components from the gingiva (G) through the plurality of through holes 180. The bone graft material 60 may be supplied to 60 to smoothly reproduce the alveolar bone B.

12 is a plan view showing a double shielding membrane for an implant of another embodiment of the present invention, Figure 13 is a cross-sectional view showing a cross-section of the alveolar bone treated with a double shielding membrane for the implant according to FIG.

Referring to FIG. 12, the implant double shielding membrane 121 may include an absorbent shielding membrane 121A and a non-absorbing shielding membrane 121B, and the non-absorbing shielding membrane 121B may be formed of a metallic circular shape 123 and a bar type. It may include a metallic wing 124. 13, the fastening hole 126 may be formed at the end of the wing portion 124 far from the circular shape portion 123. By the fastening mechanism 127 passing through the fastening hole 126, the double shielding membrane 121 for implantation may be more stably fixed to the alveolar bone B.

As described above, the implant double shielding membrane 121 combines the nonabsorbable shielding membrane 121B, which is a metal frame, with the absorbent shielding membrane 121A of the absorbent planar shape to maintain the overall shape of the implant double shielding membrane 121 and the bone graft material 60. Space can be reserved for.

In addition, the implant double shielding membrane 121 is stable, firm and secured to the alveolar bone B, thereby effectively maintaining the shape of the bone graft 60.

14 is a perspective view showing a double shielding membrane for an implant of another embodiment of the present invention.

8 to 13, the materials of the circular shape part 123, the wing part 124, the wing support part 125, and the protrusion part 122 have been described as the metallic material as the non-absorbent shielding film 121B, but the present invention is not limited thereto. It doesn't happen. For example, the circular shape 123, the wing 124, the wing support 125 and the protrusion 122 may be made of a harmless plastic material (eg, expanded polytetrafluoroethylene (ePTFE)). Etc.). The double shielding membrane 121 for the implant should be appropriately bent according to the bone loss part or through shaping such as cutting to cover the bone loss part well. Plastics are not kept well bent. When the non-absorbent material is plastic, as shown in FIG. 14, the wing 124 is preferably formed to be bent vertically or close to vertical. In addition, the non-absorbent shielding film 121B may be formed in a shape corresponding to the original shape of the alveolar bone.

The double shielding membrane 121 for implantation as described above maintains the shape of the absorbent shielding membrane 121A through the non-absorbent shielding membrane 121B, thereby facilitating bone induction regeneration through securing the space by the double shielding membrane 121 for implants. It provides the benefits.

The embodiments of the double shielding membrane for implants according to the present invention have been described in detail with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above-described embodiments, and it is natural that various modifications and equivalents can be made by those skilled in the art to which the present invention pertains. will be. Therefore, the true scope of the present invention will be defined by the claims to be described later.

Claims (24)

An absorbent barrier membrane covering the implant post and bone graft material and absorbed into bone tissue after osteoinduction regeneration; And The double shielding membrane for the implant made of a non-absorbent shielding film coupled to the outer surface of the absorbent shielding film to maintain the shape of the absorbent shielding film. The method of claim 1, The non-absorbent shielding membrane is a double shielding membrane for implants formed with a plurality of through-holes through which at least one of blood and bone forming components passes through at least a partial region. The method of claim 1, And the surface area of the non-absorbent shielding film is smaller than the surface area of the absorbent shielding film. The method of claim 1, And the non-absorbent shielding film is attached to the absorbent shielding film so as to be included in an inner region of the absorbent shielding film. The method of claim 1, And the non-absorbent shielding membrane has a protrusion projecting toward the absorbent shielding membrane and penetrating a portion of the absorbent shielding membrane. The method of claim 5, The protruding portion is a double shielding membrane for the implant coupled to any one of the concave portion of the upper surface of the temporary bolt coupled to the female screw for the crown coupling and the crown coupling female screw of the implant post. The method of claim 1, The non-absorbent shielding membrane is a double shielding membrane for an implant comprising a circular shape of a circular shape. The method of claim 7, wherein The non-absorbent shielding membrane is a double shielding membrane for the implant further comprises a wing portion extending in the radial direction from the circular shape. The method of claim 8, The wing portion is provided with a plurality, The non-absorbent shielding membrane further comprises a wing support for connecting and supporting a pair of adjacent wings of the plurality of wing parts for the implant double shielding membrane. The method of claim 8, The wing portion is formed with a fastening hole in each end portion far from the circular shape, The fastening hole is an implant double shielding membrane through which the fastening mechanism for fixing the wing to the alveolar bone. The method of claim 1, The absorbent shielding film further comprises a protrusion formed by protruding from one surface of the double shielding film for implants. The method of claim 11, The protruding portion is a double shielding membrane for an implant is formed on the surface of the both sides of the absorbent shielding film is not attached to the non-absorbing shielding film. The method of claim 12, The protruding portion of the absorbent shielding film is formed of a material different from the other parts of the absorbent shielding film. The method of claim 1, The non-absorbent shielding membrane is a double shielding membrane for implants made of any one of a titanium metal film or a metal film of titanium plated on any one metal film having a higher elasticity than titanium material. The method of claim 1, The non-absorbent shielding membrane is a double shielding membrane for implants is a plastic membrane. A shielding membrane for implants formed on one surface of the shielding film so as to protrude, and coupled to the alveolar bone, and the protrusion is forcibly fitted to the recessed portion of the implant post having a recessed portion on the upper surface thereof. The method of claim 16, The concave portion, A female screw portion for joining the crown to allow at least one of the crown and the abutment provided in the crown connection portion integrally formed on the upper side of the bone tissue joining portion inserted into the alveolar bone of the implant post to be connected via a fixing bolt; And Implant shield membrane of any one of the hexa-holes formed on the upper surface of the temporary bolt is coupled to prevent contamination of the female screw portion for the crown coupling. The method of claim 16, Any one of the concave portion and the protruding portion has a regular horizontal cross section, and the other one is a shield for the implant has a circular horizontal cross section. The method of claim 18, The protruding portion is an implant shielding film having any one of a cylinder, a cone, a hemispherical shape, and a spherical shape. The method of claim 18, When the horizontal cross section of the protruding portion is circular, the diameter of the horizontal cross section of the protruding portion is smaller than the shortest separation distance of the inner ends opposed to each other with respect to the center of the horizontal cross section of the concave portion, and based on the center of the horizontal cross section of the concave portion. Implant shields larger than the longest separation distance of the inner ends opposed to each other. The method of claim 18, When the horizontal cross section of the concave portion is circular, the diameter of the horizontal cross section of the concave portion is smaller than the shortest separation distance of the outer ends facing each other with respect to the center of the horizontal cross section of the protrusion, and is based on the center of the horizontal cross section of the protrusion. Implant shields larger than the longest distance away from the outer end facing injury. The method of claim 16, The implant shielding film, An absorbent shield covering the implant post and the bone graft; And And a non-absorbent shielding film provided with the protruding portion and coupled to an outer surface of the absorbent shielding film to maintain the shape of the absorbent shielding film. The method of claim 22, The protruding portion penetrates the absorbent shielding film to bond the non-absorbent shielding film to the absorbent shielding film. The method of claim 16, The implant shielding film, An absorbent shielding film having the protruding portion and covering the implant post and the bone graft material; And, A non-absorbent shielding membrane coupled to an outer surface of the absorbent shielding membrane to maintain the shape of the absorbent shielding membrane.

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