Sinus lifting abutment

Abstract

The sinus lifting abutment comprises a platform portion and a fixing column which are connected with each other, at least one bone nail hole penetrating through the platform portion vertically is formed in the platform portion, and the axis of the bone nail hole and the central axis of the fixing column are arranged at an angle. According to the utility model, the bone nail hole is formed in the platform part of the sinus lifting abutment, so that the bone nail can penetrate through the bone nail hole and is obliquely screwed and fixed on the side bone wall of a tooth cavity, the connection stability of the sinus lifting abutment and an alveolar bone is greatly improved, and the sinus lifting abutment is prevented from falling off, so that the stable fixation of the implant is realized; and the success rate of the maxillary sinus floor lifting and same-period implant implantation operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a sinus lift base. Background Art

[0002] There are four pairs of sinuses in the human body: frontal sinus, maxillary sinus, sphenoid sinus and ethmoid sinus, but only the maxillary sinus is closely related to oral implants. Due to the loss of maxillary posterior teeth, bone absorption in the edentulous area, pneumatization of the maxillary sinus and other reasons, the bone volume in the maxillary posterior tooth implant area is often insufficient, and bone augmentation surgery, namely maxillary sinus floor lift surgery, is required here. However, the fixation between the existing sinus lift abutment and the alveolar bone is only achieved by the sinus lift abutment itself being stuck on the bone, thereby achieving the purpose of stabilizing the implant. However, the fixing shape of the sinus lift abutment cannot meet the complex shape of the dental socket, resulting in the sinus lift abutment being unable to get stuck on the bone, resulting in unreliable fixation, and the sinus lift abutment is at risk of falling off due to the external force of chewing in the mouth, causing the corresponding implant to fall off into the sinus cavity. Utility Model Content

[0003] In view of the deficiencies of the existing technology, the utility model provides a sinus lift abutment, which mainly solves the technical problem of unreliable fixation between the existing sinus lift abutment and the alveolar bone.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A sinus lift abutment comprises a platform portion and a fixing column connected to each other. The platform portion is provided with at least one bone screw hole passing through the platform portion vertically, and the axis of the bone screw hole is arranged at an angle to the central axis of the fixing column.

[0006] Furthermore, the angle between the axis of the bone screw hole and the central axis of the fixing column is defined as α, where α=5° to 40°.

[0007] Furthermore, a bone screw hole is respectively provided at both side ends of the platform portion.

[0008] Furthermore, the two bone screw holes on the platform portion are symmetrically arranged, and the angles between the axes of the two bone screw holes and the central axis of the fixing column are equal.

[0009] Furthermore, the distance d between the two bone screw holes is 2.5 mm to 8 mm.

[0010] Furthermore, the platform portion is designed to be thinner from the middle to both side ends, and the thickness D in the middle of the platform portion is 0.5 mm to 2.5 mm.

[0011] Furthermore, the width L of the platform portion across the sides is 4 mm to 9 mm.

[0012] Further, the fixing post is vertically connected to the middle position at the bottom of the platform portion, and a screwing hole coaxially arranged with the fixing post up and down is formed at the top of the platform portion, and the cross-section of the screwing hole is hexagonal.

[0013] Further, the bone screw hole is a threaded locking hole structure.

[0014] Further, the inner wall of the bone screw hole is a smooth counterbore structure.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] In the sinus lift abutment of the present utility model, by forming a bone screw hole on the platform portion of the sinus lift abutment, the bone screw can pass through the bone screw hole and be obliquely screwed and fixed to the side bone wall of the dental socket cavity, greatly improving the connection stability between the sinus lift abutment and the alveolar bone, avoiding the detachment of the sinus lift abutment, thereby realizing the stable fixation of the implant and improving the success rate of the "simultaneous implantation of implant during maxillary sinus floor elevation surgery". Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the sinus lift abutment according to Embodiment 1 of the present utility model.

[0018] Figure 2 is a matching structural schematic diagram of the sinus lift abutment and the bone screw according to Embodiment 1 of the present utility model.

[0019] Figure 3 is a matching structural schematic diagram of the sinus lift abutment and the bone screw from another angle according to Embodiment 1 of the present utility model.

[0020] Figure 4 is a matching structural schematic diagram of the sinus lift abutment and the bone screw from another angle according to Embodiment 1 of the present utility model.

[0021] Figure 5 is a schematic diagram of the usage state of the sinus lift abutment according to Embodiment 1 of the present utility model.

[0022] Figure 6 is another schematic diagram of the usage state of the sinus lift abutment according to Embodiment 1 of the present utility model.

[0023] Figure 7 is a three-dimensional structural schematic diagram of the sinus lift abutment according to Embodiment 2 of the present utility model. Detailed Embodiments

[0024] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model.

[0026] Embodiment 1

[0027] Please refer to the attached Figure 1 to the attached Figure 6 As shown in the drawings, an embodiment of the present utility model provides a sinus lift abutment, which includes a platform part 1 and a fixing post 2 that are connected to each other. At least one bone screw hole 11 that penetrates the platform part 1 up and down is provided on the platform part 1, and the axis of the bone screw hole 11 is arranged at an angle with the central axis of the fixing post 2. It can be understood that in this embodiment, by providing the bone screw hole 11 on the platform part 1 of the sinus lift abutment, the bone screw 3 can pass through the bone screw hole 11 and be obliquely screwed and fixed to the side bone wall of the dental socket hole, greatly improving the connection stability between the sinus lift abutment and the alveolar bone, avoiding the sinus lift abutment from falling off, thereby realizing the stable fixation of the implant and improving the success rate of the "simultaneous sinus floor elevation and implant placement surgery".

[0028] Please refer to the attached Figure 1 to the attached Figure 6 As shown in the drawings, in a preferred embodiment, the bone screw hole 11 is a threaded locking hole structure. Define the angle between the axis of the bone screw hole 11 and the central axis of the fixing post 2 as α, and α = 5° to 40°. In a preferred embodiment, a bone screw hole 11 is respectively provided at both ends of the platform part 1. Preferably, the two bone screw holes 11 on the platform part 1 are symmetrically arranged, and the angles between the axes of the two bone screw holes 11 and the central axis of the fixing post 2 are equal. However, those skilled in the art should understand that in other embodiments, the angles between the axes of the two bone screw holes 11 and the central axis of the fixing post 2 may also be different and do not necessarily need to be exactly equal. As shown in the attached Figure 5 As shown in the drawings, when in use, two bone screws with a diameter of 1 to 2 mm can be locked into the bone screw holes 11 to stably lock the sinus lift abutment at the dental socket hole. However, as shown in the attached Figure 6 As shown in the drawings, in some cases where it is impossible to lock both sides simultaneously, a single bone screw with a threaded head can also be used in cooperation with the threaded locking hole to realize the fixation of the single bone screw 3 to the sinus lift abutment and the implant connected thereto.

[0029] Please refer to the attached Figure 1 to the attached Figure 6, in a preferred embodiment, the distance d between the two bone screw holes 11 is 2.5 mm to 8 mm. The platform portion 1 is designed to be thinner from the middle to both side ends, and the thickness D at the middle of the platform portion 1 is 0.5 mm to 2.5 mm. The width L of the opposite sides of the platform portion 1 is 4 mm to 9 mm.

[0030] Please refer to the attached Figure 1 to the attached Figure 6 , in a preferred embodiment, the fixing post 2 is vertically connected to the middle position at the bottom of the platform portion 1, and a screwing hole 12 coaxial with the fixing post 2 is provided at the top of the platform portion 1. The cross-section of the screwing hole 12 is hexagonal. However, those skilled in the art should understand that in other embodiments, the screwing hole 12 can also be other non-circular special-shaped hole structures, as long as it can facilitate the screwing of the sinus lift base with tools.

[0031] Embodiment Two

[0032] Please refer to the attached Figure 7 , the difference between this embodiment and Embodiment One is that the bone screw hole 11 is a countersunk hole structure with a smooth inner wall.

[0033] As mentioned above, the embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Claims

1. A dental implant abutment, comprising a platform portion (1) and a fixing post (2) connected to each other, characterized in that: At least one bone screw hole (11) penetrating through the platform part (1) vertically is provided on the platform part (1), and the axis of the bone screw hole (11) is arranged at an angle with the central axis of the fixing column (2).

2. The Douty abutment according to claim 1, characterized in that: Define the included angle between the axis of the bone screw hole (11) and the central axis of the fixing column (2) as α, where α = 5° to 40°.

3. The Dauti abutment according to claim 1, characterized in that: One bone screw hole (11) is respectively provided at both side ends of the platform part (1).

4. The Dauti abutment according to claim 3, characterized in that: The two bone screw holes (11) on the platform part (1) are symmetrically arranged, and the included angles between the axes of the two bone screw holes (11) and the central axis of the fixing column (2) are equal.

5. The Dauti abutment according to claim 3, characterized in that: The distance d between the two bone screw holes (11) is 2.5 mm to 8 mm.

6. The Douti abutment according to claim 1, characterized in that: The platform part (1) is designed to be thinner from the middle to both side ends, and the thickness D at the middle of the platform part (1) is 0.5 mm to 2.5 mm.

7. The Dauti abutment according to claim 1, characterized in that: The width L of the opposite sides of the platform part (1) is 4 mm to 9 mm.

8. The Doudi abutment according to claim 1, wherein: The fixing column (2) is vertically connected to the middle position at the bottom of the platform part (1), and a screwing hole (12) coaxially arranged with the fixing column (2) up and down is provided at the top of the platform part (1), and the cross-section of the screwing hole (12) is hexagonal.

9. The Dauti abutment according to any one of claims 1 to 8, characterized in that: The bone screw hole (11) is a threaded locking hole structure.

10. The Dauti abutment according to any one of claims 1 to 8, characterized in that: The bone screw hole (11) is a countersunk hole structure with a smooth inner wall.

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