Implant multi-union fatigue testing device

Abstract

The application discloses a kind of implant multi-union fatigue testing device, comprising: pressure mechanism;Pressure block is connected to the pressure mechanism, the bottom of the pressure block is equipped with multiple pressure surfaces, the pressure mechanism drives the pressure block to move along vertical direction, all the pressure surfaces are parallel to horizontal plane;Embedding seat is equipped below the pressure block, the embedding seat is equipped with multiple embedding holes, the included angle between the axis of each embedding hole and horizontal plane is less than 80 °, multiple pressure surfaces and multiple embedding holes are one-to-one arranged in upper and lower correspondence;Gasket, multiple gaskets are one-to-one arranged on multiple pressure surfaces.The implant multi-union fatigue testing device of the application carries out pressure measurement fatigue test to multiple implant systems simultaneously, eliminates the height difference of multiple implant systems, makes the pressure borne by multiple implant systems more balanced, so that the result of multiple implant systems simultaneous fatigue test is more accurate.The application can be applied to the field of implant fatigue test.

Description

Technical Field

[0001] This invention relates to the field of implant fatigue testing, and particularly to a multi-unit implant fatigue testing device. Background Technology

[0002] When dental implant manufacturers conduct fatigue testing on implant systems, the fatigue testing equipment typically uses a loading device to apply vertical pressure to the implant system intermittently at a specific frequency. Currently, manufacturers need to randomly select multiple samples for fatigue testing for each batch of products produced. Existing loading equipment can only test one implant system at a time, and the fatigue test for each implant system needs to last for several days, making the fatigue testing of the same batch of products time-consuming.

[0003] Therefore, if multiple implantation systems are simultaneously mounted on a single fatigue testing device using fixtures, fatigue tests on multiple implantation systems should be possible at the same time. However, due to the height difference between the multiple implantation systems after they are clamped into the fixtures, the higher-ranking implantation systems will bear greater pressure, leading to inaccurate fatigue test results. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-unit fatigue testing device for implants, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0006] A multi-stage fatigue testing device for implants includes:

[0007] Pressurization mechanism;

[0008] A pressure block is connected to the pressure mechanism. The bottom of the pressure block is provided with multiple pressure surfaces. The pressure mechanism drives the pressure block to move in the vertical direction. All the pressure surfaces are parallel to the horizontal plane.

[0009] An embedding seat is provided below the pressure block. The embedding seat has multiple embedding holes. The angle between the axis of each embedding hole and the horizontal plane is less than 80°. The multiple pressure surfaces and the multiple embedding holes are arranged vertically in correspondence.

[0010] Gaskets, there are multiple gaskets, and the multiple gaskets are arranged one-to-one on the multiple pressure surfaces.

[0011] The beneficial effects of this invention are as follows: multiple implantation systems are placed one-to-one in multiple embedding holes, and a ball cap is installed on the top of the base of each implantation system. The pressurizing mechanism drives the pressurizing block to move downward. The axes of the multiple implantation systems are inclined to the pressurizing direction of the pressurizing block, so that multiple pressurizing surfaces on the pressurizing block apply pressure to the ball cap. At the same time, pressure fatigue tests are performed on multiple implantation systems. The gaskets on the pressurizing surfaces deform during the pressurization process. The gaskets fill the space between the pressurizing surfaces and the ball cap, eliminating the height difference of the multiple implantation systems. This makes the pressure borne by the multiple implantation systems more balanced, and the maximum pressure borne by each implantation system is not a fixed value but a value that varies within a small range. This is more in line with the actual use scenario of the implantation system, and makes the results of the fatigue test of multiple implantation systems more accurate.

[0012] As a further improvement to the above technical solution, the top surface of the embedding seat is inclined to the horizontal plane, and the axes of all the embedding holes are perpendicular to the top surface of the embedding seat.

[0013] Because there is an angle between the axis of the embedding hole and the horizontal plane, the top surface of the embedding seat is set as an inclined plane that is inclined to the horizontal plane, and the axis of the embedding hole is perpendicular to the top surface of the embedding seat. Multiple embedding holes are machined with the top surface of the embedding seat as a reference, which improves the machining accuracy of the embedding holes and makes the angle of the axis of the implantation system installed in the embedding hole relative to the direction of pressure applied to the pressure surface more accurate.

[0014] As a further improvement to the above technical solution, the distance between the multiple sets of corresponding embedded holes and the pressurized surface is equal.

[0015] The height difference of the same batch of implantation systems produced by the manufacturer is small, and the distance between the embedded holes and the pressure surface of multiple sets of corresponding settings is equal. This makes the distance difference between the ball cap at the top and the pressure surface of multiple implantation systems undergoing fatigue testing at the same time small. This helps to reduce the thickness of the gasket and ensures that the gasket can respond quickly after the pressure surface squeezes the gasket and transfer the pressure to the ball cap, making the fatigue test results more accurate.

[0016] As a further improvement to the above technical solution, the plurality of embedding holes are distributed at equal intervals along the inclined direction of the top surface of the embedding seat.

[0017] Multiple embedding holes are distributed at equal intervals along the inclined direction of the top surface of the embedding seat, so that the multiple embedding holes are evenly distributed on the embedding seat. The multiple pressure surfaces on the pressure block are set one-to-one with the multiple embedding holes, so that the pressure block applies a relatively uniform pressure to the implantation system on the multiple embedding holes, making the fatigue test results more accurate.

[0018] As a further improvement to the above technical solution, the pressurizing mechanism is provided with a connecting screw hole, and each pressurizing block is provided with a connecting screw at its top, the connecting screw cooperating with the connecting screw hole.

[0019] The connecting screw of the pressure block mates with the connecting screw hole of the pressure mechanism to facilitate the replacement of the pressure block, and the use of a threaded connection helps to reduce loosening.

[0020] As a further improvement to the above technical solution, the implant multi-unit fatigue testing device also includes an embedding component. The top of the embedding component is provided with an implant receiving hole. The embedding component is assembled in the embedding hole, and the axis of the implant receiving hole coincides with the axis of the embedding hole.

[0021] After inserting the implantation system into the implant receiving hole, resin is used to fill it, which securely fixes the implantation system to the embedding component. Then, the implantation system is installed into the embedding hole of the embedding seat along with the embedding component, which fixes the position of the embedding component and the implantation system and avoids filling the embedding hole with resin, so as to facilitate the long-term use of the embedding seat.

[0022] As a further improvement to the above technical solution, a first anti-rotation structure is provided on the outer wall of the embedded part, and a second anti-rotation structure is provided on the embedded hole. The first anti-rotation structure and the second anti-rotation structure cooperate to restrict the degree of freedom of the embedded part to rotate in the embedded hole.

[0023] The first anti-rotation structure, in conjunction with the second anti-rotation structure, restricts the degree of freedom of the embedded part to rotate within the embedding hole, thus preventing deviations in the fatigue test results caused by the embedded part rotating within the embedding hole during the fatigue test.

[0024] As a further improvement to the above technical solution, the angle between the axis of each embedded hole and the horizontal plane is between 58° and 62°.

[0025] For implant systems that do not include pre-formed angle abutments, the axis of the abutment coincides with the long axis of the implant. According to YY / T0521-2018 Dental Implants - Dynamic Fatigue Test of Intraosseous Implants, the angle between the long axis of the implant and the pressure direction is required to be 30°±2°. Therefore, the angle between the axis of the embedment hole and the horizontal plane is between 58° and 62°, so that the fatigue testing device can be adapted to implant systems that do not include pre-formed angle abutments.

[0026] As a further improvement to the above technical solution, the gasket is a polyetheretherketone gasket or a polytetrafluoroethylene gasket.

[0027] The gasket is a polyetheretherketone gasket, which combines toughness and rigidity and has good wear resistance, enabling it to work stably during fatigue testing of the planting system; the gasket is a polytetrafluoroethylene gasket, which has advantages such as high temperature resistance, wear resistance, and impact resistance, ensuring stable operation during fatigue testing.

[0028] As a further improvement to the above technical solution, the plurality of pressurizing surfaces are symmetrically distributed on both sides with the position where the pressurizing mechanism is connected to the pressurizing block as the center.

[0029] The pressure mechanism is connected to the pressure block at the point of force application. Multiple pressure surfaces are symmetrically distributed on both sides of the point of force application, so that the pressure of multiple planting systems on the pressure block is symmetrically distributed on the point of force application. This avoids the pressure block tilting to one side, which would reduce the pressure on the planting system on the other side, and ensures that the pressure on multiple planting systems is relatively uniform. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0031] Figure 1 This is a schematic diagram of an embodiment of the implant multi-unit fatigue testing device provided by the present invention;

[0032] Figure 2 This is an exploded schematic diagram of an embodiment of the implant multi-unit fatigue testing device provided by the present invention.

[0033] 100, pressure block; 110, pressure surface; 120, connecting screw; 200, embedding seat; 210, embedding hole; 211, second anti-rotation structure; 300, embedding part; 310, implant receiving hole; 320, first anti-rotation structure. Detailed Implementation

[0034] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0036] In the description of this invention, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] Reference Figures 1 to 2 The implant multi-unit fatigue testing device of the present invention is provided in the following embodiment:

[0039] The implant multi-unit fatigue testing device includes a pressure mechanism, a pressure block 100, an embedding seat 200, a gasket, and an embedding component 300.

[0040] The pressurizing mechanism has a base at its bottom and a movable part. The pressurizing mechanism drives the movable part to reciprocate in the vertical direction. A pressure sensor is located at the bottom of the movable part, and a connector is located at the bottom of the pressure sensor. The pressure sensor measures the upward pressure exerted by the connector on the movable part. A connecting screw hole is located at the bottom of the connector.

[0041] The pressure block 100 has a mounting hole at its top, and a through hole running through the front and back direction on the side wall of the mounting hole. The bottom of the connecting screw 120 passes through the mounting hole, and the bottom of the connecting screw 120 has a pin hole running through the front and back direction. The pin hole is directly opposite the through hole, and the pin passes through the through hole and is inserted into the pin hole, so that the bottom of the connecting screw 120 can be detachably connected to the top of the pressure block 100.

[0042] The top of the connecting screw 120 engages with the connecting screw hole at the bottom of the connector, allowing the top of the connecting screw 120 to be detachably connected to the connector. The pressurizing mechanism then drives the movable part to reciprocate in the vertical direction, causing the pressurizing block 100 to move up and down.

[0043] The bottom of the pressure block 100 is provided with multiple pressure surfaces 110, which are parallel to the horizontal plane. The multiple pressure surfaces 110 are evenly distributed from left to right, and are symmetrically distributed on both sides of the position where the movable part is connected to the pressure block 100. In addition, the multiple pressure surfaces 110 are distributed at intervals in the vertical direction, and the multiple pressure surfaces 110 are arranged at equal intervals from top to bottom, so that the bottom of the pressure block 100 is stepped.

[0044] The working distance is the distance between two adjacent pressure surfaces 110. There are multiple pressure blocks 100, and the working distances of the multiple pressure blocks 100 are different. Any pressure block 100 can be detachably connected to the connector of the pressure mechanism.

[0045] Each pressure surface 110 has a gasket attached to it. The gasket is a polyetheretherketone gasket or a polytetrafluoroethylene gasket, and all gaskets are of equal thickness.

[0046] The bottom of the embedding seat 200 is connected to the base, and the top surface of the embedding seat 200 is perpendicular to the axis of the through hole. In this embodiment, the top surface of the embedding seat 200 gradually slopes downward from left to right.

[0047] The top surface of the embedding base 200 is provided with multiple embedding holes 210, all of which are equally spaced from left to right, and the axes of all embedding holes 210 are parallel to each other. Each embedding hole 210 has a second anti-rotation structure 211 on its inner sidewall, which is a plane extending along the axis of the embedding hole 210. The front sidewall of the embedding base 200 is provided with multiple through screw holes, each corresponding to one of the embedding holes 210, and the corresponding screw holes connect to the embedding holes 210.

[0048] Multiple embedment holes 210 are correspondingly positioned below multiple pressure surfaces 110, with the angle between the axis of the embedment hole 210 and the perpendicular line of the pressure surface 110 greater than 10°. According to "YY / T 0521-2018 Dental Implants: Dynamic Fatigue Test of Intraosseous Dental Implants", for implant systems without pre-angled abutments, the angle between the axis of the embedment hole 210 and the perpendicular line of the pressure surface 110 is 30°±2°. According to "YY / T 0521-2018 Dental Implants: Dynamic Fatigue Test of Intraosseous Dental Implants", for implant systems with pre-angled abutments, if the angle between the axis of the pre-angled abutment and the long axis of the implant is α, then the angle between the axis of the embedment hole 210 and the perpendicular line of the pressure surface 110 is 10°+α.

[0049] The embedding component 300 is cylindrical, and its top has an implant receiving hole 310, the axis of which coincides with the axis of the embedding component 300. The implant of the implant system is inserted into the implant receiving hole 310, so that the long axis of the implant coincides with the axis of the implant receiving hole 310. Then, resin is poured into the gap between the outer wall of the implant and the implant receiving hole 310. After the resin solidifies, the implant is firmly fixed in the implant receiving hole 310. According to YY / T0521-2018 Dental Implants: Dynamic Fatigue Test of Intraosseous Dental Implants, the top of the implant receiving hole 310 should be located 3.0 mm ± 0.5 mm radicularly from the nominal bone plane of the implant system.

[0050] The implantation system also includes a central screw and an abutment. The central screw is used to lock the abutment onto the implant, so that the top of the abutment is exposed outside the implant receiving hole 310. Finally, a ball cap is installed on the top of the abutment.

[0051] The outer wall of the embedded part 300 is cut along the axis to form a plane, which is the first anti-rotation structure 320, so that the shape of the embedded part 300 matches the shape of the embedded hole 210. The embedded part 300 is inserted into the embedded hole 210, so that the first anti-rotation structure 320 abuts against the second anti-rotation structure 211, preventing the embedded part 300 from rotating in the embedded hole 210. Then, a screw is screwed into the screw hole, so that the screw abuts against the first anti-rotation structure 320 of the embedded part 300, thereby fixing the embedded part 300 in the embedded hole 210.

[0052] The workflow of the implant multi-unit fatigue testing device is as follows:

[0053] Multiple implantation systems from the same batch manufactured by the manufacturer are installed one-to-one into the implant receiving holes 310 of multiple embedding parts 300. Then, multiple embedding parts 300 are installed one-to-one into multiple embedding holes 210, so that the distance between the ball caps on the top of the multiple implantation systems and the top surface of the embedding seat 200 is equal.

[0054] The tilt angle between the top surface of the embedment seat 200 and the horizontal plane is adjusted by adjusting the angle adjustment table, thereby changing the angle between the embedment hole 210 and the vertical line of the horizontal plane. According to "YY / T 0521-2018 Dynamic Fatigue Test of Intraosseous Dental Implants in Dental Implants", for implant systems without pre-angled abutments, the angle between the axis of the embedment hole 210 and the vertical line of the horizontal plane is 30°±2°. According to "YY / T 0521-2018 Dynamic Fatigue Test of Intraosseous Dental Implants in Dental Implants", for implant systems with pre-angled abutments, if the angle between the axis of the pre-angled abutment and the long axis of the implant is α, then the angle between the axis of the embedment hole 210 and the vertical line of the horizontal plane is 10°+α.

[0055] Then, based on the vertical spacing of the top caps of every two adjacent planting systems, a pressure block 100 with the same working spacing is selected and installed on the pressure mechanism. The vertical spacing of every two adjacent pressure surfaces 110 on the pressure block 100 is equal to the vertical spacing of every two adjacent top caps of the planting systems.

[0056] After the pressurizing mechanism is activated, it drives the pressurizing block 100 downward, causing the pad of the pressurizing surface 110 to first contact the ball cap at the top of the planting system. Then, the pressurizing surface 110 and the ball cap squeeze the pad, causing the pad to deform and the pressure of the pressurizing surface 110 to be transmitted to the ball cap, thus realizing the pressure test of the planting system. Then, the pressurizing mechanism moves upward, causing the pad to separate from the ball cap. The above process is continuously repeated to achieve the fatigue test of the planting system.

[0057] Typically, fatigue tests are conducted on individual planting systems before conducting fatigue tests on multiple planting systems simultaneously. Only when the planting systems of a particular variety meet the fatigue test requirements are fatigue tests conducted on multiple planting systems of the same variety carried out.

[0058] During fatigue testing of multiple implantation systems, if one system fails during the test, the remaining systems continue the fatigue test. Because the pressurization mechanism cannot adjust the pressure, the pressure on the remaining systems will increase. The fatigue test continues until all implantation systems fail or the test time limit is reached. If all implantation systems fail before the test time limit is reached, the system has failed the fatigue test.

[0059] In some embodiments, the top surface of the embedding seat 200 may be parallel to the horizontal plane, and the embedding holes 210 may be machined into holes inclined to the top surface of the embedding seat 200. Alternatively, the axes of the plurality of embedding holes 210 on the embedding seat 200 may not be parallel to each other, so as to facilitate the installation of multiple implantation systems of different sizes and including pre-formed corner abutments on the embedding seat 200.

[0060] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A multi-unit fatigue testing device for implants, characterized in that: include: Pressurization mechanism; A pressure block is connected to the pressure mechanism. The bottom of the pressure block is provided with multiple pressure surfaces. The pressure mechanism drives the pressure block to move in the vertical direction. All the pressure surfaces are parallel to the horizontal plane. An embedding seat is provided below the pressure block. The embedding seat has multiple embedding holes. The angle between the axis of each embedding hole and the horizontal plane is less than 80°. The multiple pressure surfaces and the multiple embedding holes are arranged vertically in correspondence. Gaskets, wherein there are multiple gaskets, and the multiple gaskets are disposed one-to-one on the multiple pressure surfaces; The multiple pressure surfaces are distributed at intervals along the vertical direction, and the multiple pressure surfaces are arranged at equal intervals from top to bottom so that the bottom of the pressure block is stepped.

2. The implant multi-unit fatigue testing device according to claim 1, characterized in that: The top surface of the embedding seat is inclined to the horizontal plane, and the axes of all the embedding holes are perpendicular to the top surface of the embedding seat.

3. The implant multi-unit fatigue testing device according to claim 2, characterized in that: The distance between the multiple sets of corresponding embedded holes and the pressure surface is equal.

4. The implant multi-unit fatigue testing device according to claim 3, characterized in that: The plurality of embedding holes are distributed at equal intervals along the inclined direction of the top surface of the embedding seat.

5. The implant multi-unit fatigue testing device according to claim 4, characterized in that: The pressurizing mechanism is provided with a connecting screw hole, and each pressurizing block is provided with a connecting screw on its top, the connecting screw engaging with the connecting screw hole.

6. The implant multi-unit fatigue testing device according to claim 1, characterized in that: The implant multi-unit fatigue testing device also includes an embedding component, the top of which is provided with an implant receiving hole. The embedding component is assembled in the embedding hole, and the axis of the implant receiving hole coincides with the axis of the embedding hole.

7. The implant multi-unit fatigue testing device according to claim 6, characterized in that: The outer wall of the embedded part is provided with a first anti-rotation structure, and the embedding hole is provided with a second anti-rotation structure. The first anti-rotation structure and the second anti-rotation structure cooperate to restrict the degree of freedom of the embedded part to rotate in the embedding hole.

8. The implant multi-unit fatigue testing device according to claim 1, characterized in that: The angle between the axis of each of the embedded holes and the horizontal plane is between 58° and 62°.

9. The implant multi-unit fatigue testing device according to claim 1, characterized in that: The gasket is a polyetheretherketone gasket or a polytetrafluoroethylene gasket.

10. The implant multi-unit fatigue testing device according to claim 1, characterized in that: The multiple pressurizing surfaces are symmetrically distributed on both sides of the position where the pressurizing mechanism is connected to the pressurizing block.

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