Fixture and device for dynamic fatigue test of dental implant

Abstract

The present invention provides a fixture for dynamic fatigue testing of dental implants and a device thereof, comprising an installation groove, a fixing frame, a locking assembly, a gum simulation bracket, a supporting assembly, a lower connecting assembly, an adjusting seat, a positioning assembly and an upper connecting assembly. The present invention simulates the upper and lower jaws of the toothless part of the human body through a U-shaped gum simulation bracket, and can simulate fatigue test conditions of different positions of the dental implant during actual use, so that the test results are more accurate when performing dynamic fatigue test experiments. Moreover, the gum simulation bracket can be freely replaced, so that the gum simulation bracket can be conveniently replaced with different materials to simulate upper and lower jaws in different conditions. In addition, the height and any inclination angle of the gum simulation bracket can be freely adjusted through the upper connecting assembly, the supporting assembly and the lower connecting assembly, so that the angle and height of the dental implant installed on the gum simulation bracket can be arbitrarily adjusted, and the actual working condition of the dental implant can be simulated.

Description

Technical Field

[0001] The invention relates to the technical field of medical product testing, in particular to a fixture and a device for dynamic fatigue testing of dental implants. Background Art

[0002] As one of the methods for restoring missing teeth, dental implant technology has been gradually accepted by more patients in recent years. Dental implant technology requires the implantation of dental implants into the upper and lower jaws of the toothless part of the human body through surgical means. After the surgical wound heals, the repair denture is installed on the top of the dental implant. Dental implants mainly play a good supporting role for dentures. When dental implants are used to replace natural teeth, they will be subjected to cyclic loads due to long-term chewing in the oral environment, resulting in fatigue cracks or even fractures. Fatigue testing can measure the fatigue performance of materials under cyclic loading, and is one of the basic test methods for testing the mechanical properties of materials. Therefore, dynamic fatigue testing of dental implant systems can examine the structural stability of the implant system.

[0003] Publication number CN111487125B provides a fixture for dynamic fatigue testing of dental implants, which uses a single mounting sleeve to fix the dental implant. However, in actual use, the dental implant needs to be installed in the U-shaped upper and lower jaws. Therefore, this structure cannot effectively simulate the actual working conditions of the dental implant, and the height of the fixture cannot be freely adjusted during the test. Based on the above reasons, the fixture will cause large errors when performing dynamic fatigue tests, and the accuracy of the test data and results is not high. Therefore, it is necessary to develop a fixture that simulates the installation conditions of dental implants to the greatest extent to perform tests and reduce test errors. Summary of the invention

[0004] The object of the present invention is to provide a fixture and a device for dynamic fatigue testing of dental implants to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A fixture for dynamic fatigue testing of dental implants, comprising a first mounting slot, a fixing frame, a locking assembly, a gum simulation bracket, a supporting assembly, a lower connecting assembly, an adjusting seat, a positioning assembly and an upper connecting assembly, wherein:

[0007] A fixing frame is fixed on the upper end surface of the first mounting groove, a U-shaped gum simulation bracket is installed in the fixing frame, and a locking assembly is installed on the outer side of the fixing frame for locking the gum simulation bracket when the gum simulation bracket is installed in the fixing frame;

[0008] At least three groups of support components are symmetrically arranged at the lower end of the first mounting groove, the upper ends of the support components are fixed to the bottom of the first mounting groove through the upper connecting components, and the lower ends are installed on the adjustment seat through the lower connecting components;

[0009] The upper connecting component is used to drive the supporting component to rotate forward, backward, left and right relative to the connection between the upper connecting component and the supporting component, and the lower connecting component is used to drive the supporting component to rotate forward and backward relative to the lower connecting component and the connection between the supporting component. The lower connecting component can be slidably installed on the adjustment seat forward and backward, and a positioning component is installed on the adjustment seat. The positioning component is used to limit the position of the lower connecting component on the adjustment seat.

[0010] Preferably, the fixing frame includes an outer baffle plate and an inner baffle block, the outer baffle plate and the inner baffle block are fixed at the upper end of the first mounting groove, and a fixing groove matching the shape of the gum simulation bracket is left in the middle, a concave reflux groove is arranged in the middle of the inner baffle block, and upward injection holes are arranged around the reflux groove, a liquid inlet pipe is arranged inside the inner baffle block, and the liquid inlet pipe is connected to the injection hole, and a mounting hole for mounting a dental implant is arranged on the gum simulation bracket.

[0011] Preferably, a connecting groove is provided on the side of the dental bed simulation bracket, and the locking assembly is composed of a support plate, a support block, a telescopic block, a connecting block, a pushing handle and a locking spring, the support plate is fixed on the upper end surface of the first mounting groove, the support block is fixed on the support plate, a sliding groove is provided in the support block, one end of the telescopic block is stuck in the sliding groove, and the other end passes through the outer baffle plate to extend into the fixed groove and is stuck in the connecting groove, a locking spring is installed in the sliding groove, one end of the locking spring is against the inner side wall of the sliding groove, and the other end is against the telescopic block, a strip-shaped moving groove is provided at the upper end of the support block, the moving groove is connected with the sliding groove, a connecting block is fixed at the upper end of the telescopic block, the connecting block is stuck in the moving groove, the moving groove is extended from the upper end of the connecting block, and a pushing handle is fixed, and the upper end of the telescopic block is wedge-shaped.

[0012] Preferably, a sealing groove is provided at the bottom of the gum simulation bracket, and a sealing strip is provided at the bottom of the fixing groove, and the sealing strip is stuck in the sealing groove.

[0013] Preferably, the reflux groove is connected to the first installation groove, the outer side wall of the first installation groove is installed with a water pipe connected to the inside of the first installation groove, and the liquid inlet pipe is also installed with a water pipe extending to the outside of the first installation groove.

[0014] Preferably, the supporting assembly consists of a base, a baffle, a telescopic rod, a limit block, a first connecting plate, a limit screw, a damping spring and a covering plate, the lower end of the base is fixed to the lower connecting assembly, a hollow buffer groove is provided in the middle of the base, a baffle is fixed in the buffer groove, the lower end of the telescopic rod passes through the baffle and is fixed with the first connecting plate, a damping spring is fixed inside the buffer groove, one end of the damping spring is fixed to the inner wall of the buffer groove, and the other end is fixed to the first connecting plate, limit blocks are fixed on both sides of the telescopic rod, the head of the limit screw passes through the base and is stuck in the limit block, the limit screw and the base are connected by threads, the buffer grooves above and below the damping spring are covered with a covering plate, and the upper end of the telescopic rod is fixed to the upper connecting assembly.

[0015] Preferably, the upper connecting component is composed of an upper bracket, a first rotating rod, a mounting frame, a second rotating rod and an upper bearing seat. The upper bracket is U-shaped, and a supporting component is fixed to the lower end. The mounting frame is fixed to the bottom of the first mounting groove, and the second rotating rod is fixed to the side of the first rotating rod in a T-shaped structure. Upper bearing seats are fixed to the inner side of the upper bracket and the side of the mounting frame. Both ends of the first rotating rod are installed on the upper bearing seats on the inner side of the upper bracket, and the other end of the second rotating rod is installed on the upper bearing seat on the side of the mounting frame.

[0016] Preferably, the lower connecting assembly is composed of a sliding seat, a lower bracket, a third rotating rod and a lower bearing seat. The sliding seat is slidably installed on the positioning assembly, and the third rotating rod is fixed to the upper end of the sliding seat. The lower bracket is an inverted U-shape, and a supporting assembly is fixed to the upper end. The lower bearing seat is fixed to the inner side of the lower bracket, and both ends of the third rotating rod are installed on the lower bearing seat.

[0017] Preferably, the adjustment seat is evenly provided with four groups and connected by a second connecting plate, the adjusting seat is composed of a fixed seat and a sliding rod, the fixed seat is provided with at least two sliding rods, the sliding seat is provided with sliding holes, the sliding rod passes through the sliding holes, and the positioning assembly is composed of a clamping seat, a positioning seat, a connecting rod, a pressing handle and a positioning spring, the middle part of the clamping seat is provided with a second mounting groove, the second mounting groove is provided in the second mounting groove, a connecting rod is fixed on the bottom surface of the second mounting groove, a longitudinal spring groove is provided on the positioning seat, the upper end of the connecting rod sequentially passes through the positioning seat and the spring groove and is fixed with the pressing handle, the positioning spring is sleeved on the connecting rod, and the lower end rests on the inner wall of the spring groove, and the upper end rests on the pressing handle, the positioning seat is provided with a positioning hole, the sliding rod passes through the positioning hole, and a locking groove is provided on the upper end surface of the clamping seat, and the locking groove is clamped at the bottom of the sliding rod.

[0018] The present invention further provides a dynamic fatigue testing device for dental implants, wherein the dynamic fatigue testing device for dental implants comprises a clamp and a pressure-applying device, wherein the pressure-applying device is located above the clamp and is used to apply pressure to the dental implant installed on the clamp, and the clamp adopts the above-mentioned clamp for dynamic fatigue testing of dental implants.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention simulates the upper and lower jaws of the toothless part of the human body through a U-shaped gum simulation bracket, and can simulate the fatigue test conditions of different positions of the dental implant during actual use, so that the test results are more accurate when conducting dynamic fatigue test experiments. Moreover, the gum simulation bracket can be replaced freely, so that the gum simulation bracket can be conveniently replaced with different materials to simulate the upper and lower jaws in different situations. In addition, the height and any inclination angle of the gum simulation bracket can be freely adjusted through the upper connecting component, the supporting component and the lower connecting component, so that the angle and height of the dental implant installed on the gum simulation bracket can be adjusted arbitrarily, thereby simulating the actual working condition of the dental implant to the greatest extent, and further improving the accuracy of the test data and results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall decomposition structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the bottom structure of the installation slot in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the fixing frame in the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the inner stopper in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the sealing strip in the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the locking assembly in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the adjustment seat in the present invention;

[0028] Figure 8 It is a schematic diagram of the exploded structure of the support assembly in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the gum simulation bracket in the present invention;

[0030] Fig.10 It is a structural schematic diagram of the upper connection assembly in the present invention;

[0031] Fig.11 It is a structural schematic diagram of the lower connecting assembly in the present invention;

[0032] Fig.12 It is a structural schematic diagram of the positioning component in the present invention;

[0033] Fig.13 It is a schematic diagram of the overall structure of the present invention.

[0034] In the figure: 1 first mounting groove, 2 fixing frame, 201 outer baffle, 202 inner baffle, 21 reflux groove, 22 liquid inlet pipe, 23 injection hole, 24 fixing groove, 3 locking assembly, 301 support plate, 302 support block, 303 telescopic block, 304 connecting block, 305 push handle, 306 locking spring, 31 sliding groove, 32 movement groove, 4 gum simulation bracket, 41 mounting hole, 42 connecting groove, 43 sealing groove, 5 supporting assembly, 501 base, 502 baffle, 503 telescopic rod, 504 limit block, 505 first connecting plate, 506 limit screw, 507 damping spring, 508 Cover plate, 51 buffer groove, 6 lower connecting assembly, 601 sliding seat, 602 lower bracket, 603 third rotating rod, 604 lower bearing seat, 61 sliding hole, 7 adjusting seat, 701 fixed seat, 702 sliding rod, 8 positioning assembly, 801 clamping seat, 802 positioning seat, 803 connecting rod, 804 pressing handle, 805 positioning spring, 81 second mounting groove, 82 locking groove, 83 positioning hole, 9 upper connecting assembly, 901 upper bracket, 902 first rotating rod, 903 mounting frame, 904 second rotating rod, 905 upper bearing seat, 10 second connecting plate, 11 water pipe, 12 sealing strip. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example:

[0037] See also Figures 1 to 13 , the present invention provides a technical solution:

[0038] A fixture for dynamic fatigue testing of dental implants, comprising a first mounting slot 1, a fixing frame 2, a locking assembly 3, a gum simulation bracket 4, a supporting assembly 5, a lower connecting assembly 6, an adjusting seat 7, a positioning assembly 8 and an upper connecting assembly 9, wherein:

[0039] A fixing frame 2 is fixed to the upper end face of the first mounting groove 1. The first mounting groove 1 is groove-shaped with baffles around it. A U-shaped gum simulation bracket 4 is installed in the fixing frame 2, and its shape is similar to the upper and lower jaws of the human body. The gum simulation bracket 4 is provided with mounting holes 41 for mounting dental implants. A plurality of mounting holes 41 are evenly arranged on the gum simulation bracket 4. The mounting holes 41 are used to install dental implants. The dental implants are installed in different mounting holes 41, which can simulate the usage conditions at different positions. The gum simulation bracket 4 is used to simulate the upper and lower jaws of the toothless part of the human body, which can simulate the stress conditions of the dental implants at different positions during actual use, so that the test results can be more accurate when conducting dynamic fatigue test experiments. A sealing groove 43 is provided at the bottom of the gum simulation bracket 4, and a sealing strip 12 is provided at the bottom of the fixing groove 24. The sealing strip 12 is stuck in the sealing groove 43, so that the gum simulation bracket 4 and the bottom of the fixing groove 24 are more tightly connected.

[0040] The fixing frame 2 includes an outer baffle plate 201 and an inner baffle block 202, the outer baffle plate 201 and the inner baffle block 202 are fixed at the upper end of the first mounting groove 1, and a fixing groove 24 matching the shape of the dental bed simulation bracket 4 is left in the middle, a concave reflux groove 21 is arranged in the middle of the inner baffle block 202, and upward injection holes 23 are arranged around the reflux groove 21, and a liquid inlet pipe 22 is arranged inside the inner baffle block 202, the liquid inlet pipe 22 is connected to the injection hole 23, the reflux groove 21 is connected to the first mounting groove 1, and the first mounting groove 1 is connected to the inner baffle block 202. A water pipe 11 connected to the inside of the first mounting groove 1 is installed on the outer wall of the mounting groove 1, and a water pipe 11 extending to the outside of the first mounting groove 1 is also installed on the liquid inlet pipe 22. Liquid is introduced through the liquid inlet pipe 22, and the liquid can be sprayed onto the surface of the dental implant installed on the mounting hole 41 through the spray hole 23, imitating the moist environment of the human oral cavity. The liquid on the inner stopper 202 flows back to the first mounting groove 1 through the reflux groove 21, and the liquid accumulated in the first mounting groove 1 is discharged through the water pipe 11 on the outer wall of the first mounting groove 1, which is convenient for cleaning.

[0041] A locking assembly 3 is installed on the outside of the fixing frame 2, which is used to lock the dental bed simulation bracket 4 when the dental bed simulation bracket 4 is installed in the fixing frame 2. A connecting groove 42 is arranged on the side of the dental bed simulation bracket 4. The locking assembly 3 is composed of a support plate 301, a support block 302, a telescopic block 303, a connecting block 304, a pushing handle 305 and a locking spring 306. The support plate 301 is fixed on the upper end surface of the first installation groove 1, the support block 302 is fixed on the support plate 301, a sliding groove 31 is arranged in the support block 302, and the telescopic block 303 is connected to the support plate 301. The support block 302 has one end stuck in the sliding groove 31, and the other end passes through the outer baffle 201 and extends into the fixed groove 24, and is stuck in the connecting groove 42. The telescopic block 303 can slide freely in the sliding groove 31. A locking spring 306 is installed in the sliding groove 31. One end of the locking spring 306 abuts against the inner wall of the sliding groove 31, and the other end abuts against the telescopic block 303. A strip-shaped moving groove 32 is provided on the upper end of the support block 302. The moving groove 32 is connected to the sliding groove 31. A connecting block 304 is fixed on the upper end of the telescopic block 303. The connecting block 304 is stuck in the moving groove 31. The upper end of the connecting block 304 extends out of the moving groove 32 and is fixed with a pushing handle 305. When the dental bed simulation bracket 4 needs to be fixed in the fixing groove 24, the locking spring 306 applies elastic force, so that the telescopic block 303 can be firmly stuck in the connecting groove 42, so that the dental bed simulation bracket 4 cannot move and is fixed. When the dental bed simulation bracket 4 needs to be replaced, the pushing handle 305 is pushed in the direction away from the fixing frame 2, and the pushing handle 305 drives the connecting block 304 to move in the moving groove 32, and the connecting block 304 drives the telescopic block 303 to move. Slide in the sliding groove 31 to disengage the telescopic block 303 from the connecting groove 42, and then the gum simulation bracket 4 can be removed. The upper end of the telescopic block 303 is wedge-shaped. When installing the gum simulation bracket 4, you only need to press down the telescopic block 303, and the wedge-shaped surface will decompose the downward pressure, so that the telescopic block 303 can be automatically pushed in the direction away from the fixing frame 2, which is convenient for installing the gum simulation bracket 4. The gum simulation bracket 4 can be freely replaced through the above structure, so that the gum simulation bracket 4 can be easily replaced with different materials to simulate the upper and lower jaws in different situations.

[0042] Four groups of support components 5 are symmetrically arranged below the first installation slot 1. The upper end of the support component 5 is fixed to the bottom of the first installation slot 1 through the upper connecting component 9, and the lower end is installed on the adjustment seat 7 through the lower connecting component 6. The support component 5 is composed of a base 501, a baffle 502, a telescopic rod 503, a limit block 504, a first connecting plate 505, a limit screw 506, a damping spring 507 and a covering plate 508. The lower end of the base 501 is fixed to the lower connecting component 6. A hollow buffer groove 51 is provided in the middle, a baffle 502 is fixed in the buffer groove 51, a first connecting plate 505 is fixed after the lower end of the telescopic rod 503 passes through the baffle 502, and the first connecting plate 505 can slide in the buffer groove 51, a damping spring 507 is fixed inside the buffer groove 51, one end of the damping spring 507 is fixed to the inner wall of the buffer groove 51, and the other end is fixed to the first connecting plate 505, and the limiting blocks 504 are fixed on both sides of the telescopic rod 503, and the limiting screw 504 is fixed on the inner wall of the buffer groove 51. The head of the limit screw 506 passes through the base 501 and is stuck in the limit block 504. The limit screw 506 and the base 501 are connected by threads. When the head of the limit screw 506 is stuck in the limit block 504, the limit screw 506 will limit the movement of the telescopic rod 503, and the entire support assembly 5 has no damping. When the head of the limit screw 506 is screwed out of the limit block 504, the telescopic rod 503 can be freely extended and retracted. When moving, it will squeeze the damping spring 507, so that the entire support assembly 5 has damping. Therefore, the support component 5 of this embodiment can be switched between damping and non-damping. When performing dynamic fatigue testing, since the dental implant needs to be squeezed from above, the fixture can be switched between damping and non-damping as needed to meet the needs under different conditions. The buffer groove 51 above and below the damping spring 507 is covered with a covering plate 508, which protects the damping spring 507. The upper end of the telescopic rod 503 is fixed to the upper connecting component 9.

[0043] The upper connecting component 9 is used to drive the supporting component 5 to rotate forward, backward, left and right relative to the connection between the upper connecting component 9 and the supporting component 5. The upper connecting component 9 is composed of an upper bracket 901, a first rotating rod 902, a mounting frame 903, a second rotating rod 904 and an upper bearing seat 905. The upper bracket 901 is U-shaped, and the supporting component 5 is fixed to the lower end. The mounting frame 903 is fixed to the bottom of the first mounting groove 1, and the second rotating rod 904 is fixed to the side of the first rotating rod 902, forming a T-shaped structure. Upper bearing seats 905 are fixed to the inner side of the upper bracket 901 and the side of the mounting frame 903. Both ends of the first rotating rod 902 are mounted on the upper bearing seat 905 on the inner side of the upper bracket 901, and the other end of the second rotating rod 904 is mounted on the upper bearing seat 905 on the side of the mounting frame 903. Through the structure of three upper bearing seats 905, the supporting component 5 connected to the upper bracket 901 can rotate around the first rotating rod 902 and the second rotating rod 904 to achieve forward, backward, left and right rotation.

[0044] The lower connecting component 6 is used to drive the supporting component 5 to rotate forward and backward relative to the lower connecting component 6 and the connection between the supporting component 5. The lower connecting component 6 is composed of a sliding seat 601, a lower bracket 602, a third rotating rod 603 and a lower bearing seat 604. The sliding seat 601 is slidably installed on the positioning component 8. The third rotating rod 603 is fixed to the upper end of the sliding seat 601. The lower bracket 602 is an inverted U-shape, and the supporting component 5 is fixed to the upper end. The lower bearing seat 604 is fixed to the inner side surface of the lower bracket 602. Both ends of the third rotating rod 603 are installed on the lower bearing seat 604. The third rotating rod 603 can rotate around the lower bearing seat 604, so that the supporting component 5 connected to the lower bracket 602 can rotate forward and backward around the third rotating rod 603.

[0045] The lower connecting assembly 6 can be installed on the adjustment seat 7 to slide forward and backward. The adjustment seat 7 is evenly arranged with four groups and connected by the second connecting plate 10. The adjustment seat 7 is composed of a fixed seat 701 and a sliding rod 702. At least two sliding rods 702 are arranged on the fixed seat 701. A sliding hole 61 is arranged on the sliding seat 601. The sliding rod 702 passes through the sliding hole 61, so that the sliding seat 601 can slide along the sliding rod 702. Due to the structure of the upper connecting assembly 9 and the lower connecting assembly 6, the sliding seat 601 slides along the sliding rod 702. The angle of the entire supporting assembly 5 can also be changed, not only can the height of the first mounting groove 1 be adjusted, but also when the inclination angles of the four supporting assemblies 5 are inconsistent, the inclination angle of the first mounting groove 1 can be adjusted. Therefore, in this embodiment, the height and any inclination angle of the gum simulation bracket 4 can be freely adjusted through the upper connecting assembly 9, the supporting assembly 5 and the lower connecting assembly 6, so as to realize any adjustment of the angle and height of the dental implant installed on the gum simulation bracket 4, simulate the actual working condition of the dental implant to the greatest extent, and further improve the accuracy of the test data and results.

[0046] A positioning assembly 8 is installed on the adjustment seat 7. The positioning assembly 8 is used to limit the position of the lower connecting assembly 6 on the adjustment seat 7. The positioning assembly 8 is located on the outer side of the lower connecting assembly 6. The positioning assembly 8 is composed of a clamping seat 801, a positioning seat 802, a connecting rod 803, a pressing handle 804 and a positioning spring 805. A second mounting groove 81 is provided in the middle of the clamping seat 801, a positioning seat 802 is provided in the second mounting groove 81, a connecting rod 803 is fixed to the bottom surface of the second mounting groove 81, a longitudinal spring groove is provided on the positioning seat 802, and a pressing handle 804 is fixed to the upper end of the connecting rod 803 after passing through the positioning seat 802 and the spring groove in sequence. The positioning spring 805 is sleeved on the connecting rod 803, and the lower end abuts against the inner wall of the spring groove, and the upper end abuts against the pressing handle 8 04, a positioning hole 83 is provided on the positioning seat 802, the sliding rod 702 passes through the positioning hole 83, and a locking groove 82 is provided on the upper end surface of the clamping seat 801, and the locking groove 82 is clamped at the bottom of the sliding rod 702. Under normal conditions, the positioning spring 805 exerts an upward elastic force on the pressing handle 804, driving the clamping seat 801 to be clamped at the bottom of the sliding rod 702. Under the action of friction, when the supporting component 5 is subjected to pressure from above, the lower connecting component 6 will not move outward, thereby limiting it. After pressing the pressing handle 804, the clamping seat 801 will be driven to move downward, allowing the clamping seat 801 to disengage from the bottom of the sliding rod 702. At this time, the positioning component 8 and the lower connecting component 6 can slide freely along the sliding rod 702, thereby adjusting the position of the lower connecting component 6.

[0047] The present invention further provides a dynamic fatigue testing device for dental implants, wherein the dynamic fatigue testing device for dental implants comprises a clamp and a pressure-applying device, wherein the pressure-applying device is located above the clamp and is used to apply pressure to the dental implant installed on the clamp, and the clamp adopts the above-mentioned clamp for dynamic fatigue testing of dental implants.

[0048] The use principle of the present invention is as follows: when in use, a gum simulation bracket 4 made of a suitable material is selected, and the gum simulation bracket 4 is pressed down with force in alignment with the fixing groove 24. The wedge-shaped surface at the upper end of the telescopic block 303 decomposes the downward force, and the telescopic block 303 can be automatically pushed to move in a direction away from the fixing frame 2. After reaching a suitable position, the connecting block 304 is stuck in the moving groove 32 to fix the gum simulation bracket 4, so that it cannot move. When replacing the gum simulation bracket 4, the pushing handle 305 is pushed in a direction away from the fixing frame 2, so that the telescopic block 303 is disengaged from the connecting groove 42, and the gum simulation bracket 4 can be removed.

[0049] During the test, the dental implant is installed in different installation holes 41 to simulate the use conditions at different positions, and then the water pipe 112 installed on the liquid inlet pipe 22 is passed with liquid, and the liquid is sprayed onto the surface of the dental implant installed on the installation hole 41 through the spray hole 23 to simulate the moist environment of the human oral cavity. The liquid on the inner stopper 202 flows back into the first installation groove 1 through the reflux groove 21, and the liquid accumulated in the first installation groove 1 is discharged through the water pipe 11 on the outer wall of the first installation groove 1;

[0050] Press down the pressing handle 804 to make the positioning assembly 8 and the lower connecting assembly 6 slide along the sliding rod 702, adjust the position of the lower connecting assembly 6, and then adjust the inclination angle and height of the four supporting assemblies 5, so as to adjust the dental implant to a suitable height and inclination angle. At this time, the dental implant can be squeezed from above to complete the dynamic fatigue test;

[0051] When the entire support assembly 5 needs to have damping properties, loosen the limit screw 506 to allow the head of the limit screw 506 to be screwed out of the limit block 504. At this time, the telescopic rod 503 can be freely extended and retracted, and the damping spring 507 will be squeezed during movement, so that the entire support assembly 5 has damping properties. When the entire support assembly 5 needs to have rigidity, rotate the limit screw 506 to allow the head of the limit screw 506 to be stuck in the limit block 504. At this time, the limit screw 506 will limit the movement of the telescopic rod 503, and the entire support assembly 5 has rigidity.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for dynamic fatigue testing of dental implants, comprising a first mounting groove (1), a fixing frame (2), a locking assembly (3), a gum simulation bracket (4), a supporting assembly (5), a lower connecting assembly (6), an adjusting seat (7), a positioning assembly (8) and an upper connecting assembly (9), characterized in that: A fixing frame (2) is fixed to the upper end surface of the first installation groove (1), a U-shaped dental bed simulation bracket (4) is installed in the fixing frame (2), a locking assembly (3) is installed on the outside of the fixing frame (2), and is used to lock the dental bed simulation bracket (4) when the dental bed simulation bracket (4) is installed in the fixing frame (2), and the fixing frame (2) comprises an outer baffle plate (201) and an inner baffle block (202), and the outer baffle plate (201) and the inner baffle block (202) are fixed in the first installation groove. (1) an upper end, and a fixing groove (24) matching the shape of the dental bed simulation bracket (4) is left in the middle, a concave reflux groove (21) is provided in the middle of the inner stopper (202), and upward injection holes (23) are provided around the reflux groove (21), a liquid inlet pipe (22) is provided inside the inner stopper (202), and the liquid inlet pipe (22) and the injection hole (23) are connected, and a mounting hole (41) for mounting a dental implant is provided on the dental bed simulation bracket (4); The side of the dental bed simulation bracket (4) is provided with a connecting groove (42); the locking assembly (3) is composed of a supporting plate (301), a supporting block (302), a telescopic block (303), a connecting block (304), a pushing handle (305) and a locking spring (306); the supporting plate (301) is fixed to the upper end surface of the first mounting groove (1); the supporting block (302) is fixed to the supporting plate (301); a sliding groove (31) is provided in the supporting block (302); one end of the telescopic block (303) is clamped in the sliding groove (31); the other end of the telescopic block (303) passes through the outer baffle (201) and extends to the fixing groove (24), and is clamped in the connecting groove (31). In the connecting groove (42), a locking spring (306) is installed in the sliding groove (31), one end of the locking spring (306) abuts against the inner wall of the sliding groove (31), and the other end abuts against the telescopic block (303); a strip-shaped moving groove (32) is arranged on the upper end of the supporting block (302), the moving groove (32) is communicated with the sliding groove (31), a connecting block (304) is fixed on the upper end of the telescopic block (303), the connecting block (304) is stuck in the moving groove (32), the upper end of the connecting block (304) extends out of the moving groove (32), and a pushing handle (305) is fixed, and the upper end of the telescopic block (303) is wedge-shaped; At least three groups of support components (5) are symmetrically arranged at the lower end of the first installation groove (1); the upper ends of the support components (5) are fixed to the bottom of the first installation groove (1) through upper connecting components (9), and the lower ends are installed on the adjustment seat (7) through lower connecting components (6); The upper connecting component (9) is used to drive the supporting component (5) to rotate forward, backward, left and right relative to the connection between the upper connecting component (9) and the supporting component (5); the lower connecting component (6) is used to drive the supporting component (5) to rotate forward and backward relative to the lower connecting component (6) and the connection between the supporting component (5); the lower connecting component (6) is slidably mounted on the adjusting seat (7); a positioning component (8) is mounted on the adjusting seat (7); the positioning component (8) is used to limit the position of the lower connecting component (6) on the adjusting seat (7); The support assembly (5) is composed of a base (501), a baffle (502), a telescopic rod (503), a limit block (504), a first connecting plate (505), a limit screw (506), a damping spring (507) and a covering plate (508). The lower end of the base (501) is fixed on the lower connecting assembly (6). A hollow buffer groove (51) is provided in the middle of the base (501). The baffle (502) is fixed in the buffer groove (51). The lower end of the telescopic rod (503) passes through the baffle (502) and is fixed with the first connecting plate (505). The buffer groove (51) has a hollow buffer groove (51). A damping spring (507) is fixed, one end of the damping spring (507) is fixed to the inner wall of the buffer groove (51), and the other end is fixed to the first connecting plate (505); limiting blocks (504) are fixed to both sides of the telescopic rod (503); the head of the limiting screw (506) passes through the base (501) and is stuck in the limiting block (504); the limiting screw (506) and the base (501) are connected by threads; the buffer groove (51) above and below the damping spring (507) is covered with a covering plate (508); and the upper end of the telescopic rod (503) is fixed to the upper connecting component (9); The upper connection component (9) is composed of an upper bracket (901), a first rotating rod (902), a mounting frame (903), a second rotating rod (904) and an upper bearing seat (905); the upper bracket (901) is U-shaped, with a support component (5) fixed at the lower end; the mounting frame (903) is fixed to the bottom of the first mounting groove (1); the second rotating rod (904) is fixed to the side of the first rotating rod (902) and is T-shaped; the inner side of the upper bracket (901) and the side of the mounting frame (903) are both fixed with an upper bearing seat (905); both ends of the first rotating rod (902) are mounted on the upper bearing seat (905) on the inner side of the upper bracket (901); and the other end of the second rotating rod (904) is mounted on the upper bearing seat (905) on the side of the mounting frame (903); The lower connecting component (6) is composed of a sliding seat (601), a lower bracket (602), a third rotating rod (603) and a lower bearing seat (604); the sliding seat (601) is slidably mounted on the positioning component (8); the third rotating rod (603) is fixed to the upper end of the sliding seat (601); the lower bracket (602) is in an inverted U shape, and a supporting component (5) is fixed to the upper end; the lower bearing seat (604) is fixed to the inner side surface of the lower bracket (602); and both ends of the third rotating rod (603) are mounted on the lower bearing seat (604).

2. A fixture for dynamic fatigue testing of dental implants according to claim 1, characterized in that: The bottom of the dental bed simulation bracket (4) is provided with a sealing groove (43), the bottom of the fixing groove (24) is provided with a sealing strip (12), and the sealing strip (12) is stuck in the sealing groove (43).

3. The fixture for dynamic fatigue testing of dental implants according to claim 1, characterized in that: The reflux groove (21) is in communication with the first installation groove (1); a water pipe (11) in communication with the interior of the first installation groove (1) is installed on the outer wall of the first installation groove (1); and a water pipe (11) extending to the outside of the first installation groove (1) is also installed on the liquid inlet pipe (22).

4. The fixture for dynamic fatigue testing of dental implants according to claim 1, characterized in that: The adjusting seat (7) is evenly arranged in four groups and connected by a second connecting plate (10). The adjusting seat (7) is composed of a fixed seat (701) and a sliding rod (702). At least two sliding rods (702) are arranged on the fixed seat (701). A sliding hole (61) is arranged on the sliding seat (601). The sliding rod (702) passes through the sliding hole (61). The positioning assembly (8) is composed of a clamping seat (801), a positioning seat (802), a connecting rod (803), a pressing handle (804) and a positioning spring (805). A second mounting groove (81) is arranged in the middle of the clamping seat (801). A positioning seat is arranged in the second mounting groove (81). (802), a connecting rod (803) is fixed on the bottom surface of the second mounting groove (81), a longitudinal spring groove is arranged on the positioning seat (802), a pressing handle (804) is fixed on the upper end of the connecting rod (803) after passing through the positioning seat (802) and the spring groove in sequence, the positioning spring (805) is sleeved on the connecting rod (803), and the lower end abuts against the inner wall of the spring groove, and the upper end abuts against the pressing handle (804), a positioning hole (83) is arranged on the positioning seat (802), the sliding rod (702) passes through the positioning hole (83), and a locking groove (82) is arranged on the upper end surface of the clamping seat (801), and the locking groove (82) is clamped on the bottom of the sliding rod (702).

5. A dynamic fatigue test device for dental implants, characterized in that: The dynamic fatigue test device for dental implants comprises a fixture and a pressure device, wherein the pressure device is located above the fixture and is used to apply pressure to the dental implant mounted on the fixture. The fixture is the fixture for dynamic fatigue test of dental implants as described in any one of claims 1-4.

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