Fatigue test clamp for subperiosteal implant

Abstract

The utility model discloses a subperiosteal implant fatigue test clamp, which comprises a jaw model, a clamping part and a clamping part, the base is connected to the bottom of the jaw model; a support is arranged at the bottom of the subperiosteal implant, the bottom surface of the support is attached to the simulated bone surface, and an abutment extending upwards is arranged at the top of the subperiosteal implant; and the fastener is connected to the bracket and the jaw model. According to the fatigue test clamp for the subperiosteal implant, the situation that the subperiosteal implant is locked to an alveolar bone of a patient by using a fastener is truly simulated; the subperiosteal implant fatigue test fixture is put into a fatigue test device, and the fatigue test mode refers to the implanted implant fatigue test mode, so that the long-term use condition of a subperiosteal implant in a real scene can be accurately simulated. The implant fatigue test device can be applied to the field of implant fatigue test equipment.

Description

Technical Field

[0001] The utility model relates to the field of implant fatigue test equipment, in particular to a subperiosteal implant fatigue test fixture. Background Art

[0002] Subperiosteal implants are implants between the periosteum and the bone surface. They are fixed to the alveolar bone by bone screws, without the need to be implanted into the alveolar bone. As an implant replacement for severe bone defects, subperiosteal implants have the characteristics of short cycle, fast recovery, and are not affected by the shape of the jaw.

[0003] Implants need to undergo fatigue testing to verify their mechanical properties. By observing the deformation and force changes of the implants during cyclic loading, their performance and stability after long-term use can be evaluated. For ordinary implantable implants, fatigue testing can be performed using resin-embedded implants. However, the way subperiosteal implants are fixed to the alveolar bone is significantly different from that of implantable implants, and embedding subperiosteal implants in resin does not conform to the actual use scenario of subperiosteal implants. Therefore, subperiosteal implants require specific fatigue test fixtures. Utility Model Content

[0004] The utility model aims to provide a subperiosteal implant fatigue test fixture to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] A subperiosteal implant fatigue test fixture, comprising:

[0007] A jaw model with a simulated bone surface on the top;

[0008] A base connected to the bottom of the jaw model;

[0009] A subperiosteal implant, the bottom of which is provided with a bracket, the bottom surface of the bracket is in contact with the simulated bone surface, and the top of the subperiosteal implant is provided with a base extending upward;

[0010] A fastener is connected to the bracket and the jaw model.

[0011] The beneficial effects of the utility model are as follows: a jaw model is made by an impression process or a three-dimensional scanning and printing process, so that the jaw model simulates the alveolar bone more realistically, the simulated bone surface on the top of the jaw model is an irregular curved surface, the jaw model is installed on the base, the simulated bone surface of the jaw model is convex, and then the bottom surface of the bracket of the subperiosteal implant is fitted to the simulated bone surface, the base of the subperiosteal implant extends upward, and finally the bracket is locked to the jaw model by fasteners, thereby realistically simulating the situation where the subperiosteal implant is locked to the patient's alveolar bone by fasteners; the subperiosteal implant fatigue test fixture is placed in a fatigue test device, and the fatigue test method refers to the implant type implant fatigue test method, so as to accurately simulate the long-term use of the subperiosteal implant in a real scene.

[0012] As a further improvement of the above technical solution, a mounting cavity is provided at the top of the base, and a mounting block is provided at the bottom of the jaw model, and the mounting block cooperates with the mounting cavity.

[0013] As a further improvement of the above technical solution, the jaw model is detachably connected to the base.

[0014] As a further improvement of the above technical solution, the base is provided with a screw hole, the screw hole is connected to the installation cavity, and the subperiosteal implant fatigue test fixture also includes a screw, and the screw passes through the screw hole and abuts against the installation block.

[0015] As a further improvement of the above technical solution, a circular arc-shaped protrusion is provided at the bottom of the base, and a connecting hole is provided on the base which passes through the base from top to bottom, and the connecting hole passes through the circular arc-shaped protrusion.

[0016] As a further improvement of the above technical solution, the connecting hole is located on the bottom wall of the mounting cavity, and the connecting hole is a countersunk hole.

[0017] As a further improvement of the above technical solution, the center of the arc-shaped protrusion is located on the axis of the base.

[0018] As a further improvement of the above technical solution, the jaw model and the bracket are both 3D printed parts.

[0019] As a further improvement of the above technical solution, the shape of the simulated bone surface matches the shape of the bottom surface of the bracket.

[0020] As a further improvement of the above technical solution, the jawbone model is a resin part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0022] Figure 1This is a structural schematic diagram of an embodiment of the subperiosteal implant fatigue test fixture provided by the utility model;

[0023] Figure 2 This is an exploded schematic diagram of an embodiment of the subperiosteal implant fatigue test fixture provided by the utility model;

[0024] Figure 3 This is a schematic diagram of an exploded view from another angle of an embodiment of the subperiosteal implant fatigue test fixture provided by the utility model;

[0025] Figure 4 The utility model provides a subperiosteal implant fatigue test fixture, and a cross-sectional schematic diagram of an embodiment thereof.

[0026] 100. jaw model, 110. simulated bone surface, 120. mounting block, 200. base, 210. mounting cavity, 220. arc-shaped protrusion, 230. connecting hole, 300. subperiosteal implant, 310. bracket, 320. base. DETAILED DESCRIPTION

[0027] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] Reference Figures 1 to 4 The subperiosteal implant fatigue test fixture of the utility model is made into the following embodiments:

[0032] The subperiosteal implant fatigue test fixture comprises a jawbone model 100, a base 200, a subperiosteal implant 300, and a fastener.

[0033] The jawbone model 100 is made by a molding process or a three-dimensional scanning and printing process, so that the jawbone model 100 simulates the alveolar bone more realistically. The simulated bone surface 110 on the top of the jawbone model 100 is an irregular curved surface.

[0034] The bottom of the jawbone model 100 is connected to the base 200 , and the base 200 is connected to the test platform of the fatigue testing device so that the jawbone model 100 is fixed along with the base.

[0035] The subperiosteal implant 300 includes a bracket 310 at the bottom and a base 320 at the top. The bottom surface of the bracket 310 is attached to the simulated bone surface 110 , and the base 320 extends upward to the top of the jawbone model 100 .

[0036] The fastener passes through the bracket 310 and is screwed into the jaw model 100 , so that the subperiosteal implant 300 is fixed to the jaw model 100 . A plurality of fasteners are provided to stably fix the subperiosteal implant 300 .

[0037] The subperiosteal implant 300 is truly simulated to be locked to the patient's alveolar bone using fasteners, and the subperiosteal implant fatigue test fixture is placed in a fatigue test device. The fatigue test method refers to the implant fatigue test method to accurately simulate the long-term use of the subperiosteal implant 300 in a real scenario.

[0038] In some embodiments, a mounting cavity 210 is disposed on the top of the base 200 , and a mounting block 120 is disposed on the bottom of the jawbone model 100 , and the mounting block 120 is inserted into the mounting cavity 210 and fits together.

[0039] The mounting cavity 210 is used to limit the mounting block 120, thereby limiting the freedom of the jawbone model 100 to translate in the horizontal direction and rotate around the vertical axis, thereby preventing the jawbone model 100 from loosening during the fatigue test.

[0040] In some embodiments, the jaw model 100 is detachably connected to the base 200 .

[0041] After the fatigue test, the jaw model 100 is disassembled from the base 200, and the jaw model 100, the subperiosteal implant 300, and the fasteners remain connected to perform various performance parameter tests, so as to accurately determine the performance and stability of the subperiosteal implant 300 after long-term use.

[0042] In some embodiments, the base 200 is provided with a screw hole connected to the installation cavity 210 , and the installation block 120 is pressed by screws passing through the screw hole.

[0043] The mounting block 120 is pressed tightly after being screwed into the screw hole, so that the mounting block 120 and the mounting cavity 210 can be detachably matched, so as to facilitate the removal and placement of the jaw model 100.

[0044] In some embodiments, a circular arc-shaped protrusion 220 is disposed at the bottom of the base 200 , and the base 200 is further provided with a connecting hole 230 that passes through the circular arc-shaped protrusion 220 in the up-down direction. The connecting hole 230 passes through the circular arc-shaped protrusion 220 .

[0045] The arc-shaped protrusion 220 of the base 200 is used to be installed in the arc-shaped track of the fatigue testing device. The arc-shaped protrusion 220 moves along the arc-shaped track to change the inclination angle of the base 200, thereby adjusting the direction of the loading force applied to the subperiosteal implant 300 during fatigue testing.

[0046] In some embodiments, the connection hole 230 passes downward from the bottom wall of the mounting cavity 210 , and the connection hole 230 is a countersunk hole.

[0047] The bolts connecting the arc-shaped protrusion 220 and the arc-shaped track of the fatigue testing device are inserted from the bottom wall of the installation cavity 210 to reduce the depth of the connecting hole 230, thereby avoiding the influence of the strength of the base 200 due to the hole being too deep.

[0048] In some embodiments, the axis of the connecting hole 230 coincides with the axis of the base 320 .

[0049] The axis of the bolt connecting the arc-shaped protrusion 220 and the arc-shaped track of the fatigue testing device is located on the same straight line as the axis of the base 320 , which helps to improve the stability of the base 200 when vertical pressure loading is performed.

[0050] In some embodiments, the jaw model 100 and the bracket 310 are made by 3D printing.

[0051] The three-dimensional model of the jaw is obtained by scanning the patient's oral structure with a three-dimensional scanner. The jaw model 100 and the corresponding bracket 310 of the tooth defect position are made by computer based on the three-dimensional model of the jaw, so that the jaw model 100 and the subperiosteal implant 300 are closer to actual usage, and the results after fatigue testing are more in line with the actual situation.

[0052] In some embodiments, the shape of the simulated bone surface 110 matches the shape of the bottom surface of the bracket 310 .

[0053] Ensure that the bottom surface of the bracket 310 fits tightly with the simulated bone surface 110 to simulate the healing of the patient's alveolar bone and combine with the bracket 310 to form a tightly fitting surface, avoid stress concentration between the bracket 310 and the simulated bone surface 110, and make the fatigue test results more accurate.

[0054] In some embodiments, the jawbone model 100 is made of resin material.

[0055] The hardness and flexibility of the resin material jaw model 100 are closer to the human alveolar bone.

[0056] Specifically, refer to Figures 1 to 4 As shown, the subperiosteal implant fatigue test fixture includes a jaw model 100, a base 200, a subperiosteal implant 300, fasteners, and screws.

[0057] A three-dimensional model of the jaw is obtained by scanning the patient's oral structure with a three-dimensional scanner, and a jaw model 100 of the tooth defect position is made by computer based on the three-dimensional model of the jaw. The top of the jaw model 100 is provided with a simulated bone surface 110 with an irregular curved surface, and the bottom of the jaw model 100 is provided with a downwardly protruding mounting block 120.

[0058] A mounting cavity 210 is provided on the top of the base 200, and the structure of the mounting cavity 210 matches the structure of the mounting block 120. The bottom wall of the mounting cavity 210 is provided with a downwardly penetrating connecting hole 230, and the connecting hole 230 is a countersunk hole. The side wall of the mounting cavity 210 is provided with a horizontally penetrating screw hole.

[0059] A circular arc-shaped protrusion 220 protruding downward is provided at the bottom of the base 200 . The circular arc-shaped protrusion 220 extends in an arc in the left-right direction, and the connecting hole 230 passes through the circular arc-shaped protrusion 220 .

[0060] The mounting block 120 of the jawbone model 100 is inserted into the mounting cavity 210 of the base 200 , and the screws are screwed into the screw holes and press the mounting block 120 , so that the jawbone model 100 is fixed to the base 200 .

[0061] The subperiosteal implant 300 includes a bracket 310 and a base 320. A three-dimensional model of the jaw is obtained by scanning the patient's oral structure with a three-dimensional scanner. A jaw model 100 of the tooth defect position is made by a computer based on the three-dimensional model of the jaw. The shape of the bracket 310 is designed based on the jaw model 100 so that the bottom surface of the bracket 310 matches the shape of the simulated bone surface 110. The base 320 is set in the middle of the bracket 310, and the base 320 extends upward, and the axis of the base 320 coincides with the axis of the connecting hole 230.

[0062] The mandibular model 100 is 3D printed from a resin material, the bracket 310 and the base 320 are 3D printed from a titanium alloy, and the fasteners are bone screws, which pass through the reserved holes on the bracket 310 and are screwed into the mandibular model 100 .

[0063] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A subperiosteal implant fatigue test fixture, characterized in that: include: A jaw model with a simulated bone surface on the top; A base connected to the bottom of the jaw model; A subperiosteal implant, the bottom of which is provided with a bracket, the bottom surface of the bracket is in contact with the simulated bone surface, and the top of the subperiosteal implant is provided with a base extending upward; A fastener is connected to the bracket and the jaw model.

2. The subperiosteal implant fatigue test fixture according to claim 1, characterized in that: A mounting cavity is provided on the top of the base, and a mounting block is provided on the bottom of the jawbone model, and the mounting block cooperates with the mounting cavity.

3. The subperiosteal implant fatigue test fixture according to claim 2, characterized in that: The jaw model is detachably connected to the base.

4. The subperiosteal implant fatigue test fixture according to claim 3, characterized in that: The base is provided with a screw hole, which is connected to the installation cavity. The subperiosteal implant fatigue test fixture also includes a screw, which passes through the screw hole and abuts against the installation block.

5. The subperiosteal implant fatigue test fixture according to claim 2, characterized in that: An arc-shaped protrusion is provided at the bottom of the base, and a connecting hole is provided in the base which passes through the base from top to bottom, and the connecting hole passes through the arc-shaped protrusion.

6. The subperiosteal implant fatigue test fixture according to claim 5, characterized in that: The connecting hole is located on the bottom wall of the mounting cavity, and the connecting hole is a countersunk hole.

7. The subperiosteal implant fatigue test fixture according to claim 5, characterized in that: The axis of the connecting hole coincides with the axis of the base.

8. The subperiosteal implant fatigue test fixture according to claim 1, characterized in that: The jawbone model and the bracket are both 3D printed parts.

9. The subperiosteal implant fatigue test fixture according to claim 8, characterized in that: The shape of the simulated bone surface matches the shape of the bottom surface of the bracket.

10. The subperiosteal implant fatigue test fixture according to claim 8, characterized in that: The jawbone model is a resin part.

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