Bone nail structure

Abstract

The utility model relates to a structure of a bone nail. The bone nail comprises a setting piece, a tip part, a thread part, a fixing piece, a fixing surface, a reinforcing part, at least one divergent part and a butt joint part, when a user wants to fill the bone meal on the gum, a bone sheet can be utilized and placed on the gum to be filled with the bone meal, then the bone nail penetrates through the bone sheet from the thread part and then enters the gum to be mutually fixed, at the moment, the fixing face on the fixing piece abuts against one side face of the bone sheet in a large-area mode, and therefore the bone meal can be filled in the gum. The bone sheet can achieve the best fixing effect under the condition that the bone sheet is not cracked, separation is avoided, and the fastening force can achieve the best state after bone meal is placed between the bone sheet and the gum.

Description

TECHNICAL FIELD

[0001] The utility model discloses a bone nail structure which has strong clamping capacity and will not have the problem of falling off. BACKGROUND

[0002] The bone nail used for dental bone repair in the past contains a cap head and a protruding neck, and the lower side of the neck is a screw. However, the screw body size is slightly large, which reduces the space of bone repair powder and increases the risk of bone fracture caused by locking into thin bone. The screw with small cutting force makes it difficult to fix the bone nail on the alveolar bone, and it is also necessary to drill into thick bone to obtain stability.

[0003] Therefore, the titanium metal supporting bone nail for dental bone repair of the M515374 can be fixed titanium film, which has a head and a body. The neck between the two is provided with a bolt groove for positioning the titanium film. The top of the head has a cross-shaped driving part, which can be rotated by a tool. The body is composed of V-shaped threads, a self-tapping screw and a sharp cone tail segment, which are used for accurate positioning and drilling into the alveolar bone.

[0004] The above-mentioned titanium metal supporting bone nail for dental bone repair of the M515374 has the following problems and defects to be improved:

[0005] When the bone nail is combined with the bone piece, the cap body part is often loose due to the small area of the cap body part. In addition, under the fixed state, the bone piece may be broken due to the friction force formed by the bone nail.

[0006] How to solve the above problems and defects is the direction of improvement that the present inventor and relevant manufacturers in this industry are eager to research. CONTENT OF THE UTILITY MODEL

[0007] The applicant of the utility model has collected relevant data and made continuous trial and modification based on years of experience in this industry, and finally designed the new type of bone nail structure with strong clamping capacity and no falling off problem.

[0008] The main purpose of the utility model is to design the diameter ratio of the fixing part and the setting part between 4:1 and 5:1, so that the fixing surface of the fixing part is larger, the fixing effect is better for pressing the bone piece, and the bone piece is less likely to crack.

[0009] The structure of the utility model can achieve the above-mentioned purposes, which comprises a setting piece, a tip, a threaded part, a fixing piece, a fixing surface, a reinforcing part, at least one gradually expanding part and a connecting part, wherein the tip is formed at one end of the setting piece, the threaded part is formed on the surface of the setting piece, the fixing piece is located at the end of the setting piece away from the tip, the fixing surface is located at the side of the fixing piece facing the setting piece, the reinforcing part is formed around the fixing piece, the gradually expanding part is located at the periphery of the reinforcing part and extends to the center of the fixing piece, and the connecting part is arranged at the side of the fixing piece away from the fixing surface. Before the user combines the bone nail with the gum, a bone piece is placed on the gum, and then the threaded part of the setting piece of the bone nail is drilled through the bone piece, and then drilled into the gum for fixation. At this time, the fixing surface on the fixing piece will press the bone piece in a large area, so that the bone piece is fixed without cracking, and the bone powder is placed between the bone piece and the gum, and the fastening force will reach the best state.

[0010] Through the above-mentioned technology, the problem that the bone nail and the bone piece are combined, the cap body part is often loose due to the small area of the cap body part of the bone nail, and the bone piece is cracked under the friction force of the bone nail in the fixed state can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a perspective view of a preferred embodiment of the utility model.

[0012] Figure 2 It is a side view of a preferred embodiment of the utility model.

[0013] Figure 3 It is an implementation schematic of a preferred embodiment of the utility model Figure 1 .

[0014] Figure 4 It is an implementation schematic of a preferred embodiment of the utility model Figure 2 .

[0015] Figure 5 It is an implementation schematic of a preferred embodiment of the utility model Figure 3 .

[0016] Figure 6 It is a perspective view of another preferred embodiment of the utility model.

[0017] Figure 7 It is a side view of another preferred embodiment of the utility model.

[0018] Figure 8 It is a side view of another preferred embodiment of the utility model.

[0019] Figure 9 This is a side view of another preferred embodiment of the present invention.

[0020] Setting Components ···1

[0021] Threaded section...11

[0022] Tip ···12

[0023] Fasteners ···2

[0024] Fixed surface...21

[0025] Strengthening Department...22

[0026] Gradual expansion section...221

[0027] Docking section...23

[0028] Limiting part...231

[0029] Inclined part···232

[0030] Buffer section...233

[0031] Chamfered section...234

[0032] Bone meal ····3

[0033] Bone fragments...4

[0034] gums...5

Detailed Implementation Methods

[0035] To achieve the above objectives and effects, the technical means and structure adopted by this utility model are described in detail below with reference to the preferred embodiment of this utility model.

[0036] Please see Figures 1 to 5 As shown, the 3D diagram leads to the implementation illustration. Figure 3 The structure of this bone screw can be clearly seen from the diagram as including:

[0037] Component 1;

[0038] A threaded portion 11 is formed on the surface of the mounting member 1;

[0039] A fixing member 2 is located at one end of the setting member 1. The ratio of the diameter length of the fixing member 2 to the diameter length of the setting member 1 is between 4:1 and 5:1. The fixing member 2 has a fixing surface 21 on the side facing the setting member 1, and the setting member 1 has a pointed tip 12 at the end away from the fixing member 2, so that the setting member 1 is a self-tapping screw structure.

[0040] a reinforcing portion 22 formed around the fixing member 2, the reinforcing portion 22 having at least one expanding portion 221 at the outer periphery thereof toward the center of the fixing member 2; and

[0041] a butt joint portion 23 provided at the side of the fixing member 2 away from the fixing surface 21.

[0042] The setting member 1 is a metal rod.

[0043] The setting member 1, the threaded portion 11, the pointed end portion 12, the fixing member 2, the reinforcing portion 22, the expanding portion 221, and the butt joint portion 23 are integrally formed.

[0044] The expanding portion 221 of the present embodiment is exemplified by one on the single side.

[0045] When a patient has a tooth missing and desires to perform bone filling, the bone powder 3 can be first placed in the tooth missing position, and then a bone piece 4 is placed on the bone powder 3 and covers the bone powder 3. Finally, a hand tool is connected to the butt joint portion 23, and a forward rotating pressure is applied, so that the bone screw of the present case penetrates through the bone piece 4 and is combined with the tooth bed 5. When the bone screw penetrates through the bone piece 4, the pointed end portion 12 first contacts the bone piece 4 and applies a rotating forward pressure, so that the pointed end portion 12 directly drills a hole on the surface of the bone piece 4. After continuous rotation and advancement, the pointed end portion 12 drills into the tooth bed 5. In addition, the threaded portion 11 also enters the tooth bed 5 after passing through the bone piece 4 to be fixed, until the fixing surface 21 is in contact with the surface of the bone piece 4, and the rotation is stopped. When the fixing surface 21 is in contact with the bone piece 4, the area of the diameter length ratio between 4:1 and 5:1 is designed to increase, so that the surface of the bone piece 4 is pressed, and the bone piece 4 can more completely cover the bone powder 3, so that the problem of warping or incomplete coverage is avoided. In addition, the fixing effect is firm, and the problem of falling off is avoided. In addition, it is worth mentioning that the expanding portion 221 of the reinforcing portion 22 has a stronger fixing effect on the bone piece 4.

[0046] Please refer to Figure 6 and Figure 7The diagram shows a perspective view and a side view of another preferred embodiment of the bone screw structure. This embodiment differs from the previous embodiment in that the expanding portion 221 of the bone screw structure is designed with two flat inclined surfaces, and the connecting portion 23 has two orthogonally arranged limiting portions 231. Each limiting portion 231 has two inclined surfaces 232 at its bottom, and a buffer portion 233 is provided between the two inclined surfaces 232. The height of each inclined surface 232 at its end away from the buffer portion 233 is higher than the height of the buffer portion 233. Furthermore, the buffer portion 233 has a conical shape and is a fixing member. On the side facing away from the fixed surface 21, there are several chamfered portions 234 near the intersection of the two limiting portions 231. Therefore, when the hand tool is combined with the docking portion 23, the end of the hand tool will dock with the limiting portion 231 and press against the bottom of the limiting portion 231. The limiting portion 231 is limited by its inner sidewall. Furthermore, the combination of the beveled portion 232, the buffer portion 233 and the chamfered portions 234 allows the hand tool with a pointed cone-shaped end to adhere more completely to the bottom of the limiting portion 231, improving the user's operating feel and providing better rotation of the bone screw.

[0047] Please see Figure 8 The figure shows a side view of another preferred embodiment of the present invention. As can be clearly seen from the figure, one end of the gradually expanding portion 221 of the bone nail structure is connected to the setting member 1. Therefore, the difference between this embodiment and the above-mentioned preferred embodiment is that the reinforcing portion 22 is designed as a single-sided gradually expanding portion 221. This allows the smooth design of the connection between the gradually expanding portion 221 and the setting member 1 to effectively improve the fixation effect.

[0048] Please see Figure 9 The figure shown is a side view of another preferred embodiment of the present invention. As can be clearly seen from the figure, the difference between this embodiment and the above-mentioned preferred embodiment is that this embodiment takes the gradually expanding portion 221 with curved surfaces on both the upper and lower sides of the reinforcing portion 22 as an example, which means that this case does not limit the scope to a single or two gradually expanding portions 221, and both one or two are within the scope of protection of this case.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Therefore, any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included in the patent scope of the present utility model.

Claims

1. A bone nail structure, characterized in that... The bone screw comprises: a setting member; a threaded portion formed on the surface of the setting member; a fixing member located at one end of the setting member, the ratio of the length of the diameter of the fixing member to the length of the diameter of the setting member is between 4:1 and 5:1, and the fixing member has a fixing surface on the side facing the setting member; a reinforcing portion formed around the fixing member, the reinforcing portion has at least one expanding portion at the periphery thereof towards the center of the fixing member; and an abutting portion provided on the side of the fixing member away from the fixing surface.

2. The bone peg structure of claim 1 wherein The end of the setting member away from the fixing member is formed as a pointed end portion, so that the setting member is a self-tapping screw structure.

3. The bone peg structure of claim 1 wherein The abutting portion has two limit portions arranged orthogonally, each limit portion has two inclined surface portions at the bottom thereof, a buffer portion is provided between the two inclined surface portions, and the height of each inclined surface portion at the end away from the buffer portion is higher than the height of the buffer portion.

4. The bone peg structure of claim 3, wherein The buffer portion is in the form of a taper.

5. The bone peg structure of claim 3 wherein The side of the fixing member away from the fixing surface has a plurality of chamfered corner portions at the intersection close to the two limit portions.

6. The bone peg structure of claim 1 wherein One end of the expanding portion is connected to the setting member.

Images