TWI847941B - Fixed device for ridge augmentation - Google Patents

Abstract

A fixed device for ridge augmentation is provided. The fixed device comprises a base, a hole, and a plate, wherein the base is configured to be placed on a jawbone, the hole is formed on the base, and the plate extends outward from one side of the base and is located above the base. The plate of the fixed device is placed above a jawbone, an augmentation chamber can be formed to provide bone growth and shorten the overall surgical time.

Description

Fixation devices for palatal regeneration

The present invention relates to a fixation device, and in particular to a fixation device for palatal regeneration.

Currently, dental implants involve implanting artificial tooth roots (implants) into the alveolar bone. During the implantation process, the gum needs to be turned over and the implant needs to be implanted. This is an invasive surgical procedure. After the implant is implanted, it is necessary to wait for several months to allow the implant to fully integrate with the bone before an artificial crown can be placed on the implant.

Although the alveolar bone tissue can be regenerated to cover the implant through the restoration and regeneration of alveolar bone cells, the teeth will be subjected to various indeterminate external forces or torques in various rotational directions when chewing, which will exert forces other than the axial force on the implant. This eccentric force is not evenly distributed around the implant, which will produce concentrated stress, pushing and vibrating effects on the surrounding bones, causing bone loss, causing the implant to loosen, and leading to implant failure.

In response to this, there is a method of guided bone regeneration in dental implants. In this method, a bone graft material is placed in the jaw bone and a metal device is placed around the area to contain and protect the bone graft material during bone regeneration, such as a thin protective mesh shell made of a biocompatible metal (titanium). Therefore, the traditional method of dental implants may include first performing a hard tissue regeneration surgery, waiting a suitable period of time to allow bone growth, and then performing a subsequent surgical procedure to remove any space maintenance devices on the bone graft and place the implant on the bone graft.

However, the thin protective mesh shell needs to be cut into a specific shape before being placed around the area, and the space in the oral cavity is easily limited, making the operation complicated. In addition, the thin protective mesh shell needs to be fixed with pins, and its structure is not only easy to deform, but also difficult to position, thereby increasing the overall operation time.

Therefore, in order to overcome the shortcomings and deficiencies in the prior art, the present invention is necessary to provide an improved fixation device for palatal regeneration to solve the problems existing in the above-mentioned conventional technology.

The main purpose of the present invention is to provide a fixation device for palatal regeneration, which can form a regeneration chamber for bone growth by placing the wing plate of the fixation device above a palatal bone, shorten the overall operation time and increase the stability of bone growth.

To achieve the above-mentioned purpose, the present invention provides a fixing device for palatal regeneration, which includes a fixing seat, a through hole and a wing plate; wherein the fixing seat is configured to be combined with an implant, and the implant is implanted in a palatal bone; the through hole is formed on the fixing seat, and the through hole is configured to allow a bolt to extend through and be fixed in the implant; the wing plate extends outward from a side edge of the fixing seat and is located above the palatal bone; wherein a regeneration chamber is defined between the fixing seat and the wing plate, and the regeneration chamber is configured to be filled with a bone transplant material to provide the palatal bone regeneration.

In one embodiment of the present invention, the fixing base includes an upper body and a lower body, the wing plate is disposed on the upper body, the lower body extends downward from the upper body, and the lower body tapers in a direction away from the upper body.

In one embodiment of the present invention, the through hole includes a first inner annular surface, a second inner annular surface and a third inner annular surface, and the first inner annular surface, the second inner annular surface and the third inner annular surface are configured to contact a surface of the bolt, and a first diameter defined around the first inner annular surface, a second diameter defined around the second inner annular surface and a third diameter defined around the third inner annular surface are different.

In one embodiment of the present invention, the first path length is greater than the second path length, and the second path length is greater than the third path length.

In one embodiment of the present invention, the wing plate includes a flat plate portion, a bent portion and an extended portion, the upper body is connected to one end of the flat plate portion, and the bent portion is located between the flat plate portion and the extended portion.

In one embodiment of the present invention, the wing plate further comprises a positioning hole, the positioning hole is formed on the bent portion, and the positioning hole is configured to allow a positioning member to pass through and be fixed.

In one embodiment of the present invention, the curvature of the curved portion is greater than 0 and less than 1.5.

In one embodiment of the present invention, a top surface of the flat plate portion is flush with a top surface of the upper body.

In one embodiment of the present invention, an angle between the flat plate portion and the extension portion is greater than 90 degrees.

In one embodiment of the present invention, the lower body and the extending portion extend in the same direction.

As described above, the fixing device of the present invention places the alar plate on the palate, and after the bone graft material is filled into the regeneration chamber, a gingival tissue is covered on the alar plate and the regeneration chamber is closed to provide bone growth. Since the alar plate is in a single piece, it does not need to be cut into a specific shape, and the operation in the oral cavity is relatively simple, and it can be effectively positioned in the bone regeneration area, thereby shortening the overall operation time and increasing the stability of bone growth.

In order to make the above and other purposes, features, and advantages of the present invention more clearly understood, the following will specifically cite the present invention and provide a detailed description with reference to the accompanying drawings. Furthermore, the directional terms mentioned in the present invention, such as up, down, top, bottom, front, back, left, right, inside, outside, side, periphery, center, horizontal, transverse, vertical, longitudinal, axial, radial, topmost or bottommost, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to explain and understand the present invention, but not to limit the present invention.

Please refer to FIG. 1 , which shows a fixation device for jaw regeneration according to an embodiment of the present invention, which can be covered on the jaw (upper jaw or lower jaw) to regenerate the alveolar bone tissue of the jaw, wherein the fixation device includes a fixing seat 2, a through hole 3 and a wing plate 4. The present invention will describe in detail the detailed structure, assembly relationship and operation principle of each component below.

1, 2 and 3, the fixing base 2 is configured to be assembled with an implant 102 (see FIG4), the implant 102 is implanted in a palate 101, and then a bolt 105 is passed through the fixing base 2 and screwed on the implant 102. In this embodiment, the fixing base 2 includes an upper body 21 and a lower body 22, and the wing plate 4 is disposed on the upper body 21, the lower body 22 extends downward from the upper body 21, and the lower body 22 is gradually contracted in a direction away from the upper body 21.

Referring to FIG. 2 , FIG. 3 and FIG. 4 , the through hole 3 is formed on the fixing seat 2, and the through hole 3 is configured to allow the bolt 105 to extend and be fixed in the implant 102. In this embodiment, the through hole 3 includes a first inner annular surface 31, a second inner annular surface 32 and a third inner annular surface 33, and the first inner annular surface 31, the second inner annular surface 32 and the third inner annular surface 33 are configured to contact a surface of the bolt 105, and a first diameter defined around the first inner annular surface 31, a second diameter defined around the second inner annular surface 32 and a third diameter defined around the third inner annular surface 33 are different. For example, the first diameter is greater than the second diameter, and the second diameter is greater than the third diameter.

Continuing with reference to FIG. 2, FIG. 3 and FIG. 4, the wing plate 4 extends outward from one side edge of the fixing seat 2, and the wing plate 4 is located above the jaw 101. In this embodiment, the wing plate 4 includes a flat plate portion 41, a curved portion 42, an extension portion 43 and a positioning hole 44, the upper body 21 is connected to one end of the flat plate portion 41, the curved portion 42 is located between the flat plate portion 41 and the extension portion 43, the positioning hole 44 is formed on the curved portion 42, and the positioning hole 44 is configured to allow a positioning member (such as a needle, not shown) to be inserted and fixed to position the wing plate 4 at a specific position. In addition, a regeneration chamber 5 is defined between the fixing seat 2 and the wing plate 4, and the regeneration chamber 5 is configured to provide a bone transplant material 104 (such as bone powder) for filling so that the jaw 101 can be regenerated.

Specifically, the curvature of the curved portion 42 of the wing plate 4 is greater than 0 and less than 1.5, a top surface of the flat portion 41 of the wing plate 4 is flush with a top surface of the upper body 21 of the fixing seat 2, and an angle between the flat portion 41 of the wing plate 4 and the extension portion 43 is greater than 90 degrees, and the lower body 22 of the fixing seat 2 and the extension portion 43 of the wing plate 4 extend in the same direction.

According to the above structure, during the hard tissue regeneration surgery, after the bone transplant material 104 (such as bone powder) is filled into the regeneration chamber 5, a gum tissue 103 is covered on the wing plate 4 and the regeneration chamber 5 is closed. The gum tissue 103 will cover downward along the curved portion 42 of the wing plate 4 to the bottom of a gum, thereby providing a space for bone growth through the regeneration chamber 5. In addition, since the gum tissue 103 covers along the curved portion 42 of the wing plate 4, the width of the top of the gum tissue 103 gradually shrinks upward, which can limit the volume of bone regeneration to adapt to the shape of the alveolar bone and accelerate the healing speed of the surgical wound.

As described above, the fixing device of the present invention places the wing plate 4 on the top of the jaw 101. After the bone transplant material 104 (e.g., bone powder) is filled into the regeneration chamber 5, the gum tissue 103 is covered on the wing plate 4 and the regeneration chamber 5 is closed to provide space for bone growth. Since the wing plate 4 is in a single-piece shape, it does not need to be cut into a specific shape, and the operation in the oral cavity is relatively simple. It can be effectively positioned in the bone regeneration area, thereby shortening the overall operation time and increasing the stability of bone growth.

Although the present invention has been disclosed by way of embodiments, they are not intended to limit the present invention. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined in the attached patent application.

101: palate 102: implant 103: gingival tissue 104: bone graft material 105: bolt 2: fixing seat 21: upper body 22: lower body 3: through hole 31: first inner ring surface 32: second inner ring surface 33: third inner ring surface 4: wing plate 41: flat plate 42: curved portion 43: extension portion 44: positioning hole 5: regeneration chamber

FIG. 1 is a three-dimensional view of a fixing device for palatal regeneration according to an embodiment of the present invention. FIG. 2 is a side view of a fixing device for palatal regeneration according to an embodiment of the present invention. FIG. 3 is a three-dimensional view of a fixing device for palatal regeneration according to an embodiment of the present invention fixed on the palate. FIG. 4 is a cross-sectional view of a fixing device for palatal regeneration according to an embodiment of the present invention fixed on the palate.

2: Fixed seat

21: Upper body

22: Lower body

3:Through hole

4: Wing plate

41: Flat plate

42: bend

43: Extension

44: Positioning hole

Claims (10)

A fixation device for palatal regeneration, the fixation device comprising: a fixation seat configured to be combined with an implant, the implant being implanted in a palatal bone; a through hole formed on the fixation seat, the through hole being configured to allow a bolt to pass through and be fixed in the implant; and a wing plate extending outward from a side edge of the fixation seat and located above the palatal bone; wherein a regeneration chamber is defined between the fixation seat and the wing plate, the regeneration chamber being configured to be filled with a bone graft material to provide the palatal bone regeneration. A fixation device for jaw regeneration as described in claim 1, wherein the fixation seat comprises an upper body and a lower body, the wing plate is disposed on the upper body, the lower body extends downward from the upper body, and the lower body tapers in a direction away from the upper body. A fixation device for jaw regeneration as described in claim 1, wherein the through hole includes a first inner annular surface, a second inner annular surface and a third inner annular surface, the first inner annular surface, the second inner annular surface and the third inner annular surface are configured to contact a surface of the bolt, and a first diameter defined around the first inner annular surface, a second diameter defined around the second inner annular surface and a third diameter defined around the third inner annular surface are different. A fixation device for jaw regeneration as described in claim 3, wherein the first diameter is greater than the second diameter, and the second diameter is greater than the third diameter. A fixation device for jaw regeneration as described in claim 2, wherein the wing plate includes a flat portion, a bent portion and an extended portion, the upper body is connected to one end of the flat portion, and the bent portion is located between the flat portion and the extended portion. A fixation device for jaw regeneration as described in claim 5, wherein the wing plate further comprises a positioning hole, the positioning hole is formed on the bent portion, and the positioning hole is configured to allow a positioning member to pass through and be fixed. A fixation device for jaw regeneration as described in claim 5, wherein the curvature of the curved portion is greater than 0 and less than 1.5. A fixation device for jaw regeneration as described in claim 5, wherein a top surface of the flat plate portion is flush with a top surface of the upper body. A fixation device for jaw regeneration as described in claim 5, wherein an angle between the flat plate portion and the extension portion is greater than 90 degrees. A fixation device for jaw regeneration as described in claim 5, wherein the lower body and the extension portion extend in the same direction.