Dental implant fatigue test loading device

Abstract

The present invention discloses a dental implant fatigue test loading device, wherein the dental implant fatigue test loading device comprises a first connecting device, a second connecting device, an elastic element, an adjustment mechanism and a loading assembly. A cavity is arranged in the first connecting device, the elastic element is arranged in the cavity of the first connecting device, and one end of the elastic element is connected to the first connecting device, and the other end of the elastic element is connected to the second connecting device. The adjustment mechanism is installed on the first connecting device, and the position of the elastic element is adjusted so that the first connecting device and the second connecting device contact each other and can slide relatively; the loading assembly is connected to the second connecting device. Through the dental implant fatigue test loading device of the present invention, the second connecting device has a certain degree of freedom in the horizontal direction, which can drive the loading assembly to move in the horizontal direction, and ensure that the load is transmitted to the dental implant in the vertical direction through the position of the center point of the loading cap.

Description

Technical Field

[0001] The invention relates to dental implant detection equipment, in particular to a dental implant fatigue test loading device. Background Art

[0002] After dental implant restoration, the feeling is the same as that of natural teeth, and it also has the advantages of close occlusion function to natural teeth and is conducive to maintaining the jaw shape of the edentulous area, without damaging the adjacent teeth. Therefore, dental implants have become the "third set of teeth" for people with edentulous teeth. Although the success rate of dental implant restoration is as high as over 90%, there are cases where the dental implant system suffers from fatigue damage, resulting in the breakage of the connecting screws or cracks and fractures in the implant, leading to implant failure. Therefore, it is necessary to conduct dynamic fatigue tests on dental implants in strict accordance with national standards to detect the maximum stress that will not cause damage to the dental implant.

[0003] In the prior art, the loading cap of the dental implant is set as a curved surface, and the dynamic load is transmitted to the dental implant through point contact between the loading device and the loading cap. However, the position of the loading cap of the dental implant will change after being compressed, and the loading device lacks freedom in the horizontal direction and cannot move with the displacement of the loading cap. As a result, the load transmitted to the dental implant during the test cannot accurately act on the center point of the loading cap, resulting in errors in the test results. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a dental implant fatigue test loading device, which enables the loading device to accurately apply the load to the center point of the loading cap of the dental implant, thereby improving the accuracy of the test.

[0005] According to an embodiment of the present invention, a dental implant fatigue test loading device includes: a first connecting device, a cavity is arranged inside the first connecting device; a second connecting device; an elastic element, the elastic element is arranged in the cavity of the first connecting device, and one end of the elastic element is connected to the first connecting device, and the other end of the elastic element is connected to the second connecting device; an adjusting mechanism, the adjusting mechanism is installed on the first connecting device, and is used to adjust the position of the elastic element on the first connecting device so that the first connecting device and the second connecting device are in contact with each other and can slide relative to each other; a loading assembly, the loading assembly is connected to the second connecting device.

[0006] The dental implant fatigue test loading device according to the embodiment of the present invention has at least the following beneficial effects: the present invention adopts a dental implant fatigue test loading device. Compared with the loading device in the prior art, the elastic element in the present invention is arranged in the cavity of the first connecting device and one end is connected to the first connecting device, and the other end is connected to the second connecting device. The adjustment mechanism is installed on the first connecting device, which is used to adjust the position of the elastic element so that the first connecting device and the second connecting device are in contact with each other and can slide relative to each other, and the load is transmitted when the first connecting device and the second connecting device are in contact. At the same time, the first connecting device and the second connecting device can also slide relative to each other, so that the second connecting device has a certain degree of freedom in the horizontal direction; the second connecting device is connected to the loading assembly, so that the loading assembly also has a certain degree of freedom in the horizontal direction. When the dental implant loading cap under pressure after loading is displaced, the loading assembly can move with the movement of the loading point located on the loading cap, so as to ensure that during the test, the load is transmitted to the dental implant in the vertical direction through the position of the center point of the loading cap.

[0007] The first connecting device includes a first threaded rod, a first boss, a second threaded rod and a second boss. The first boss is arranged between the first threaded rod and the second threaded rod, the second boss is arranged below the second threaded rod, and two key grooves are provided on the side wall of the second threaded rod. The two key grooves are arranged opposite to each other and connected to the inside of the second threaded rod.

[0008] According to some embodiments of the present invention, the adjustment mechanism includes a nut, a positioning block and a positioning pin, a through hole is provided in the middle of the positioning block, the positioning block is provided on the outside of the second threaded rod through the through hole, the nut is provided below the positioning block, the positioning pin is mounted on the positioning block, and the positioning pin crosses the two key slots, the positioning pin can slide in the two key slots, the elastic element is hung on the positioning pin, and the nut is threadedly connected to the second threaded rod.

[0009] According to some embodiments of the present invention, a first groove is provided on the positioning block, and the positioning pin is placed on the first groove.

[0010] According to some embodiments of the present invention, a second groove is provided on the positioning pin, and the elastic element is hung on the second groove.

[0011] According to some embodiments of the present invention, a load transfer device is further included, a connecting groove is provided on the lower surface of the second boss, the load transfer device is installed in the connecting groove, the elastic element passes through the load transfer device and is connected to the second connecting device, and the second connecting device can slide relative to the load transfer device.

[0012] According to some embodiments of the invention, the load transfer device is a thrust ball bearing.

[0013] According to some embodiments of the present invention, the second connecting device includes a connecting portion and a connecting rod, the connecting portion is installed above the connecting rod, an internal threaded hole is provided inside the connecting rod, the internal threaded hole is threadedly connected to the loading assembly, and the connecting portion is connected to the elastic element.

[0014] According to some embodiments of the present invention, the loading assembly includes a third threaded rod and a loading rod, the third threaded rod is arranged above the loading rod, and the third threaded rod is threadedly connected to the internal threaded hole.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of a dental implant fatigue test loading device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional view of the dental implant fatigue test loading device at AA is shown;

[0019] Figure 3 is a schematic structural diagram of a first connecting device according to an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the structure of the adjustment mechanism and the elastic element of an embodiment of the present invention;

[0021] Figure 5 is a schematic structural diagram of a second connecting device according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the loading component of an embodiment of the present invention.

[0023] Reference numerals:

[0024] Dental implant fatigue test loading device 1000,

[0025] The first connecting device 1100, the first threaded rod 1110, the first boss 1120, the second threaded rod 1130, the keyway 1131, the second boss 1140, the connecting groove 1141,

[0026] The second connecting device 1200, the connecting portion 1210, the connecting rod 1220,

[0027] Elastic element 1300,

[0028] Adjustment mechanism 1400, positioning block 1410, first groove 1411, positioning pin 1420, second groove 1421, nut 1430,

[0029] Loading assembly 1500, third threaded rod 1510, loading rod 1520,

[0030] Load transfer device 1600. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] 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.

[0035] Reference below Figures 1 to 6 A dental implant fatigue test loading device 1000 according to the present invention is described.

[0036] like Figure 1 and Figure 2As shown, the dental implant fatigue test loading device 1000 according to the present invention comprises: a first connecting device 1100 , a second connecting device 1200 , an elastic element 1300 , an adjusting mechanism 1400 and a loading assembly 1500 .

[0037] The first connecting device 1100 is provided with a cavity inside, the elastic element 1300 is provided in the cavity of the first connecting device 1100, and one end of the elastic element 1300 is connected to the first connecting device 1100, and the other end of the elastic element 1300 is connected to the second connecting device 1200, and the adjustment mechanism 1400 is installed on the first connecting device, and is used to adjust the position of the elastic element 1300 on the first connecting device 1100, so that the first connecting device 1100 and the second connecting device 1200 contact each other and can slide relative to each other. The loading assembly 1500 is connected to the second connecting device 1200.

[0038] Specifically, the elastic element 1300 is a spring, and a first hook is provided at the upper end of the spring, and a second hook is provided at the lower end of the spring, the first hook is connected to the first connecting device 1100, and the second hook is connected to the second connecting device 1200, so that the first connecting device 1100 and the second connecting device 1200 are in contact with each other; the first connecting device 1100 and the second connecting device 1200 can slide relative to each other in the horizontal direction, so that there is a certain degree of freedom between the first connecting device 1100 and the second connecting device 1200. It can be understood that the elastic element 1300 can also be a tension spring, an elastic band or other elastic element 1300 with stretchability, and the selection of a spring as the elastic element 1300 in this embodiment is not a specific limitation of the present invention. The dental implant fatigue test loading device 1000 can be installed on a dynamic fatigue testing machine through the first connecting device 1100, and the dynamic fatigue testing machine provides a load to the dental implant fatigue test loading device 1000, and the load passes through the first connecting device 1100, the second connecting device 1200 and the loading assembly 1500 in sequence, and acts on the dental implant under the action of the loading assembly 1500; the loading cap of the dental implant is set as a curved surface, and the contact with the loading assembly 1500 is point contact, so that the loading assembly 1500 applies the load to the loading cap of the dental implant by point contact; at the same time, because the second connecting device 1200 can drive the loading assembly 1500 to move in the horizontal direction, the loading assembly 1500 also has a certain degree of freedom in the horizontal direction, ensuring that during the test, the load is transmitted to the dental implant in the vertical direction through the position of the center point of the loading cap.

[0039] In some embodiments of the present invention, the first connecting device 1100 includes a first threaded rod 1110, a first boss 1120, a second threaded rod 1130, and a second boss 1140. The first boss 1120 is disposed between the first threaded rod 1110 and the second threaded rod 1130, and the second boss 1140 is disposed below the second threaded rod 1130. Two key grooves 1131 are provided on the side wall of the second threaded rod 1130. The two key grooves 1131 are disposed opposite to each other and communicate with the interior of the second threaded rod 1130. For example, Figure 2 and Figure 3 As shown, the first boss 1120 is arranged between the first threaded rod 1110 and the second threaded rod 1130, the second boss 1140 is arranged below the second threaded rod 1130, and two key grooves 1131 are provided on the side wall of the second threaded rod 1130, and the two key grooves 1131 are arranged opposite to each other and communicate with the inside of the second threaded rod 1130. Specifically, the thread on the first threaded rod 1110 is set as a fine thread, and the first boss 1120 is set as a square anti-rotation structure; the first threaded rod 1110 is fixedly installed above the first boss 1120, and the first connecting device 1100 can be fixedly connected to the dynamic fatigue testing machine through the first threaded rod 1110, and the first boss 1120 can be set to make the first connecting device 1100 more stably locked to the dynamic fatigue testing machine. The thread on the second threaded rod 1130 is set as a coarse thread, and a cavity is set in the coarse threaded rod.

[0040] In some embodiments of the present invention, the adjustment mechanism 1400 includes a nut 1430, a positioning block 1410 and a positioning pin 1420. A through hole is provided in the middle of the positioning block 1410 so that the positioning block 1410 is disposed on the outer side of the second threaded rod 1130 through the through hole. The nut 1430 is disposed below the positioning block 1410. The positioning pin 1420 is mounted on the positioning block 1410 and crosses two key slots 1131. The positioning pin 1420 can slide in the two key slots 1131. The elastic element 1300 is hung on the positioning pin 1420. The nut 1430 is threadedly connected to the second threaded rod 1130. For example, Figure 2 and Figure 4As shown, the positioning pin 1420 is mounted on the positioning block 1410, and the positioning pin 1420 crosses the two key slots 1131, and the positioning pin 1420 can slide in the two key slots 1131, and the nut 1430 is arranged below the positioning block 1410, and a through hole is arranged in the middle of the positioning block 1410, and the positioning block 1410 is arranged on the outside of the second threaded rod 1130 through the through hole, and the nut 1430 is threadedly connected with the second threaded rod 1130. Specifically, the outside of the nut 1430 is provided with a hexagonal anti-rotation surface, which is fixedly connected with the positioning block 1410, so that the threaded connection between the nut 1430 and the second threaded rod 1130 is more secure, and the positioning block 1410 is also arranged on the first connecting device 1100. Two key grooves 1131 are provided at the center position of the upper part of the second threaded rod 1130. The two key grooves 1131 are arranged opposite to each other and connected to the inside of the second threaded rod 1130, so that the positioning pin 1420 can be mounted in the two key grooves 1131. At the same time, the positioning pin 1420 can slide up and down in the two key grooves 1131 and can also drive the elastic element 1300 to stretch, thereby adjusting the tension between the first connecting device 1100 and the second connecting device 1200, so that the first connecting device 1100 and the second connecting device 1200 can contact each other and slide relative to each other.

[0041] In some embodiments of the present invention, the positioning block 1410 is provided with a first groove 1411, and the positioning pin 1420 is hung on the first groove 1411. Figure 4 As shown, the positioning block 1410 is provided with a first groove 1411, and the positioning pin 1420 is hung on the positioning block 1410 through the first groove 1411. Specifically, the first groove 1411 is provided above the positioning block 1410 and at a position passing through the center of the through hole of the positioning block 1410. By placing the positioning pin 1420 on the first groove 1411, the position between the positioning block 1410 and the positioning pin 1420 is defined, and at the same time, the positioning block 1410 can adjust the position of the positioning pin 1420 on the first connecting device 1100 when moving. The positioning pin 1420 can also drive the elastic element 1300 to move, adjust the position of the elastic element 1300 on the first connecting device 1100, so that the first connecting device 1100 and the second connecting device 1200 contact each other, and the first connecting device 1100 and the second connecting device 1200 can slide relatively on a horizontal plane.

[0042] In some embodiments of the present invention, the positioning pin 1420 is provided with a second groove 1421, and the elastic element 1300 is hung on the second groove 1421. Figure 4As shown, the positioning pin 1420 is provided with a second groove 1421, and the elastic element 1300 is fixedly hung on the positioning pin 1420 through the second groove 1421. Specifically, a cavity is provided inside the first connecting device 1100, and the positioning pin 1420 is provided with a second groove 1421 at the center of the cavity of the first connecting device 1100, so that the spring can be hung on the positioning pin 1420 and the position of the spring is limited.

[0043] In some embodiments of the present invention, the dental implant fatigue test loading device 1000 further includes a load transfer device 1600, a connection groove 1141 is provided on the lower surface of the second boss 1140, the load transfer device 1600 is installed in the connection groove 1141, the elastic element 1300 passes through the load transfer device 1600 and is connected to the second connection device 1200, and the second connection device 1200 can slide relative to the load transfer device 1600. For example, Figure 2 and Figure 3 As shown, the lower surface of the second boss 1140 is provided with a connection groove 1141, the load transfer device 1600 is installed in the connection groove 1141, and the elastic element 1300 passes through the load transfer device 1600 and is connected to the second connection device 1200. Specifically, the load transfer device 1600 is installed in the connection groove 1141 below the second boss 1140 by embedding, so that the load transfer device 1600 is connected to the first connection device 1100, and the lower surface of the load transfer device 1600 and the second connection device 1200 are in contact with each other and can slide relative to each other, so that the second connection device 1200 has a certain degree of freedom on the horizontal plane. The plane where the load transfer device 1600 contacts the second connection device 1200 is smaller than the plane where the second connection device 1200 contacts the load transfer device 1600, which can ensure that the load is smoothly transferred in the vertical direction without limiting the degree of freedom of the second connection device 1200 on the horizontal plane.

[0044] In some embodiments of the present invention, the load transfer device 1600 is a thrust ball bearing. Specifically, the thrust ball bearing can transfer axial loads but cannot bear radial loads. The thrust ball bearing can be a detachable device, including an upper surface washer, a lower plane washer, a retainer and a ball. Semicircular grooves are provided on the upper plane washer and the lower plane washer, the retainer is placed in the semicircular groove, and the ball is installed on the retainer. The lower surface washer contacts with the second connecting device 1200 and can slide relative to each other, so that the second connecting device 1200 has a certain degree of freedom in the horizontal direction.

[0045] In some embodiments of the present invention, the second connecting device 1200 includes a connecting portion 1210 and a connecting rod 1220. The connecting portion 1210 is installed above the connecting rod 1220. The connecting rod 1220 is provided with an internal threaded hole, the internal threaded hole is threadedly connected to the loading assembly 1500, and the connecting portion 1210 is connected to the elastic element 1300. For example, Figure 2 and Figure 5 As shown, the connecting portion 1210 is connected to the bottom of the elastic element 1300, and the connecting portion 1210 is installed above the connecting rod 1220. Specifically, the connecting portion 1210 is set as a third hook, the elastic element 1300 is a spring, and a second hook is set at the bottom of the spring, and the third hook is connected to the second hook, so that the spring and the second connecting portion 1210 are connected. The connecting rod 1220 is set as a T-shaped structure, and an anti-rotation surface is set on the outside of the connecting rod 1220, and an internal threaded hole is set inside the connecting rod 1220. The anti-rotation surface makes the connection between the two more secure, and the internal threaded hole enables the connecting rod 1220 to be threadedly connected to the loading assembly 1500.

[0046] In some embodiments of the present invention, the loading assembly 1500 includes a third threaded rod 1510 and a loading rod 1520, wherein the third threaded rod 1510 is disposed above the loading rod 1520, and the third threaded rod 1510 is threadedly connected to the internal threaded hole. Figure 2 and Figure 6 As shown, the loading rod 1520 is arranged below the third threaded rod 1510, and the third threaded rod 1510 is threadedly connected to the connecting rod 1220 through an internal threaded hole. Specifically, by setting an internal threaded hole on the connecting rod 1220, the connecting rod 1220 is threadedly connected to the third threaded rod 1510, and the loading assembly 1500 is fixedly installed on the second connecting device 1200, so that the second connecting device 1200 can drive the loading assembly 1500 to move; the loading rod 1520 is set as a T-shaped structure. The loading assembly 1500 receives the load and transmits it downward, and applies the load to the dental implant through the loading rod 1520. The loading cap of the dental implant is set as a curved surface, and the loading rod 1520 and the loading cap apply the load by point contact. When the dental implant is displaced under pressure, the second connecting device 1200 can drive the loading assembly 1500 to adjust the position of the load acting on the loading cap, so that the loading assembly 1500 has a certain degree of freedom in the horizontal direction, ensuring that during the test, the load is transmitted to the dental implant in the vertical direction through the position of the center point of the loading cap.

[0047] Reference below Figures 1 to 6 The dental implant fatigue test loading device 1000 according to the embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the present invention.

[0048] like Figures 1 to 6 As shown, the dental implant fatigue test loading device 1000 includes a first connecting device 1100, a second connecting device 1200, an elastic element 1300, an adjustment mechanism 1400 and a loading assembly 1500. The elastic element 1300 is a spring, the upper end of the spring is provided with a first hook, and the lower end of the spring is provided with a second hook. A cavity is provided in the first connecting device 1100, and the spring is provided in the cavity of the first connecting device 1100. The first hook is connected to the first connecting device 1100 through the adjustment mechanism 1400, the second hook is connected to the second connecting device 1200, and the loading assembly 1500 is connected to the second connecting device 1200. Under the action of the adjustment mechanism 1400 adjusting the spring, the first connecting device 1100 and the second connecting device 1200 are in contact with each other and can slide relative to each other.

[0049] The adjustment mechanism 1400 includes a nut 1430, a positioning block 1410 and a positioning pin 1420. A through hole is provided at the center of the positioning block 1410, and a first groove 1411 is provided at the position passing through the center of the through hole on the positioning block 1410. The nut 1430 is provided below the positioning block 1410, and the positioning pin 1420 is placed on the first groove 1411 of the positioning block 1410. The positioning pin 1420 is provided with a second groove 1421 at the center of the cavity of the first connecting device 1100, and the first hook is hung on the second groove 1421. The spring is connected to the first connecting device 1100 by being hung on the adjustment mechanism 1400. Two key grooves 1131 are arranged on the second threaded rod 1130 of the second connecting device 1200. The two key grooves 1131 are arranged opposite to each other and connected to the inside of the second threaded rod 1130. The positioning pin 1420 crosses the two key grooves 1131. The positioning pin 1420 slides in the two key grooves 1131 driven by the nut 1430 and the positioning block 1310, thereby adjusting the position of the spring so that the first connecting device 1100 and the second connecting device 1200 are in contact with each other and can slide relative to each other.

[0050] Specifically, a load transfer device 1600 is also provided, and the load transfer device 1600 is a thrust ball bearing; a connection groove 1141 is provided below the second boss 1140 of the first connection device 1100, so that the thrust ball bearing is embedded in the connection groove 1141; a spring passes through the thrust ball bearing and is connected to the connection portion 1210 of the second connection device 1200, and a T-shaped connection rod 1220 in the second connection device 1200 contacts the lower plane washer of the thrust ball bearing, and the second connection device 1200 and the thrust ball bearing maintain relative sliding on the horizontal plane, even if the second connection device 1200 has a degree of freedom on the horizontal plane. The plane where the lower plane washer contacts the second connection device 1200 is smaller than the plane where the second connection device 1200 contacts the lower plane washer, which can ensure that the load is smoothly transmitted in the vertical direction without limiting the degree of freedom of the second connection device 1200 in the horizontal direction. The second connecting device 1200 is threadedly connected to the loading assembly 1500, so the second connecting device 1200 can drive the loading assembly 1500 to move, so that the loading assembly 1500 also has freedom in the horizontal direction.

[0051] According to the dental implant fatigue test loading device 1000 of the present invention, by such a configuration, at least the following effects can be achieved: the first connecting device 1100 and the second connecting device 1200 are connected by arranging the elastic element 1300, and the adjusting mechanism 1400 adjusts the position of the elastic element 1300 so that the first connecting device 1100 and the second connecting device 1200 are in contact with each other and can slide relative to each other; a through hole is arranged at the center of the load transfer device 1600, and the load transfer device 1600 is embedded in the bottom of the first connecting device 1100, so that the load transfer device 1600 Under the action of the elastic element 1300, the load transfer device 1600 and the second connection device 1200 can contact each other and slide relative to each other in the horizontal direction. In the plane where the load transfer device 1600 contacts the second connection device 1200, the plane of the load transfer device 1600 is smaller than the plane of the second connection device 1200. Through the contact between the load transfer device 1600 and the second connection device 1200, the load can be transferred in the axial direction; the relative sliding of the load transfer device 1600 and the second connection device 1200 can make the second connection device 1200 have a certain degree of freedom in the horizontal direction. The second connection device 1200 is threadedly connected to the loading assembly 1500, and the second connection device 1200 can drive the loading assembly 1500 to move in the horizontal direction, so that the loading assembly 1500 also has a certain degree of freedom in the horizontal direction. When the loaded dental implant loading cap is displaced after loading, the loading assembly 1500 can move with the movement of the loading point on the loading cap, ensuring that during the test, the load is transferred to the dental implant in the vertical direction through the position of the center point of the loading cap.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "particularly", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the 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 claims and their equivalents.

Claims

1. A dental implant fatigue test loading device, characterized in that: include: A first connecting device, wherein a cavity is disposed inside the first connecting device; a second connecting device; an elastic element, wherein the elastic element is disposed in the cavity of the first connecting device, one end of the elastic element is connected to the first connecting device, and the other end of the elastic element is connected to the second connecting device; an adjusting mechanism, the adjusting mechanism being mounted on the first connecting device and being used for adjusting the position of the elastic element on the first connecting device to adjust the tension between the first connecting device and the second connecting device so that the first connecting device and the second connecting device are in contact with each other and can slide relative to each other; a loading assembly connected to the second connecting device; Wherein, the first connecting device comprises a first threaded rod, a first boss, a second threaded rod and a second boss, the first boss is arranged between the first threaded rod and the second threaded rod, the second boss is arranged below the second threaded rod, and two key grooves are arranged on the side wall of the second threaded rod, and the two key grooves are arranged opposite to each other and communicate with the inside of the second threaded rod; Wherein, the adjustment mechanism includes a nut, a positioning block and a positioning pin, a through hole is provided in the middle of the positioning block, the positioning block is arranged on the outside of the second threaded rod through the through hole, the nut is arranged below the positioning block, the positioning pin is mounted on the positioning block, and the positioning pin crosses the two key slots, the positioning pin can slide in the two key slots, the elastic element is hung on the positioning pin, and the nut is threadedly connected to the second threaded rod.

2. The dental implant fatigue test loading device according to claim 1, characterized in that: The positioning block is provided with a first groove, and the positioning pin is placed on the first groove.

3. The dental implant fatigue test loading device according to claim 1, characterized in that: The positioning pin is provided with a second groove, and the elastic element is hung on the second groove.

4. The dental implant fatigue test loading device according to claim 1, characterized in that: It also includes a load transfer device, a connecting groove is provided on the lower surface of the second boss, the load transfer device is installed in the connecting groove, the elastic element passes through the load transfer device and is connected to the second connecting device, and the second connecting device can slide relative to the load transfer device.

5. The dental implant fatigue test loading device according to claim 4, characterized in that: The load transfer device is a thrust ball bearing.

6. The dental implant fatigue test loading device according to claim 1, characterized in that: The second connecting device includes a connecting portion and a connecting rod, wherein the connecting portion is installed above the connecting rod, an internal threaded hole is provided inside the connecting rod, the internal threaded hole is threadedly connected to the loading assembly, and the connecting portion is connected to the elastic element.

7. The dental implant fatigue test loading device according to claim 6, characterized in that: The loading assembly includes a third threaded rod and a loading rod. The third threaded rod is arranged above the loading rod, and the third threaded rod is threadedly connected to the internal threaded hole.

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