A clamping device and testing method for bone ligament peel strength testing

Abstract

The application discloses a clamping device for bone ligament peel strength test, which comprises a workbench (1), an angle adjusting device (2) installed on the workbench (1), a spacing adjusting device (3) installed on the angle adjusting device (2), and a sample fixing frame (4) installed on the spacing adjusting device (3). The application also provides a bone ligament peel strength test method, which comprises the following steps: S1, installation; S2, sample fixing; S3, adjusting the position of the workbench; S4, adjusting the position of the sliding platform; S5, adjusting the angle; and S6, test. The application aims to provide a clamping device for bone ligament peel strength test, which has the advantages of simple structure, low cost, good reliability, and suitability for bone ligament peel strength test of different lengths, sizes, angles and directions.

Description

Technical Field

[0001] This invention relates to the field of peel strength testing technology, and in particular to a clamping device and testing method for testing the peel strength of bone and ligaments. Background Technology

[0002] Peel strength refers to the maximum force required to peel bonded materials per unit width from their contact surfaces. It reflects the adhesive strength of the materials.

[0003] Currently, existing peel strength testers generally test the peel strength of hard materials bonded together with another soft material by tensile force. However, there is currently no instrument for testing the peel strength of bone and ligament samples, nor are there any clamps or devices for testing the peel strength of bone and ligaments.

[0004] In view of this, there is a need to provide a clamping device for testing the peel strength of bone and ligaments to overcome the shortcomings of the prior art. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a clamping device and testing method for testing the peel strength of bone and ligaments that is simple in structure, low in cost, reliable and applicable to different lengths, sizes, angles and orientations.

[0006] To solve the above-mentioned technical problems, the present invention provides a clamping device for testing the peel strength of bone and ligaments, which includes a worktable, an angle adjustment device mounted on the worktable, a spacing adjustment device mounted on the angle adjustment device, and a sample fixing frame mounted on the spacing adjustment device.

[0007] A further improvement of the present invention is that the worktable is a two-dimensional worktable.

[0008] A further improvement of the present invention is that the angle adjustment device includes a sliding platform mounted on the worktable and an angle adjustment mechanism mounted on the sliding platform.

[0009] A further improvement of the present invention is that the angle adjustment mechanism includes a base plate mounted on the sliding platform, a panel rotatably connected to the base plate, and an adjustment plate mounted on the base plate. The adjustment plate is provided with an angle adjustment slot, and an adjustment screw passes through the angle adjustment slot and is threadedly connected to the panel.

[0010] A further improvement of the present invention is that the number of adjustment plates is 2, the number of angle adjustment slots is 2, and the number of adjustment screws is 2.

[0011] A further improvement of the present invention is that the spacing adjustment device includes a guide rail mounting plate mounted on the panel, a linear guide rail mounted on the guide rail mounting plate, a slider linearly slidably connected to the linear guide rail, a base plate mounted on the slider, and a positioning mechanism mounted on the base plate.

[0012] A further improvement of the present invention is that the number of sliders, seat plates, and positioning mechanisms are all two.

[0013] A further improvement of the present invention is that the positioning mechanism includes a positioning plate mounted on the base plate, the positioning plate having a hollow groove in the middle, and positioning claws on both sides of the hollow groove, and locking screws threadedly connected to the positioning claws.

[0014] A further improvement of the present invention is that the spacing adjustment device further includes baffles installed on both sides of the guide rail mounting plate.

[0015] A further improvement of the present invention is that the sample holder includes a bearing seat mounted on the base plate, a bearing is installed inside the bearing seat, a sleeve is fixedly connected to the bearing, and a fixing screw is installed on the sleeve.

[0016] The present invention also provides a method for testing the peel strength of bone and ligaments, which includes the following steps: S1 Installation: The clamping device for testing the bone and ligament peel strength described above is fixedly installed on the testing equipment via the mounting shaft; S2 Sample Fixing: Place the sample in the sample holder and lock it in place; S3 Adjust worktable position: Adjust the worktable to a suitable position; S4 Adjust the position of the sliding platform: Adjust the sliding platform of the angle adjustment device to a suitable position; S5 Adjust Angle: Adjust the angle adjustment mechanism of the angle adjustment device to the test angle; S6 test: The ligament on the sample is clamped with a testing device to perform a peel strength test; Step S2 includes: S21. Place one end of the test sample into the sleeve on the left; S22. Adjust the distance between the two sliders so that the other end of the sample is also placed in the sleeve on the right side; S23. Tighten the locking screw to clamp the positioning jaws onto the linear guide rail, thereby fixing the distance between the two sleeves; S24. Tighten the fixing screws to secure the test sample to the sleeve; S25. Tighten the locking screw of the sleeve to fix the sleeve to the bearing housing; Step S5 includes: S51. Loosen the adjusting screw; S52. Rotate the right-side guide rail mounting plate upwards until the angle indicator needle points to the specified angle mark on the adjustment plate; S53. Tighten the adjusting screw.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention includes a worktable, an angle adjustment device, a spacing adjustment device, a sample holder, etc., with few parts, thus resulting in a simple structure and low cost; 2. This invention uses mechanical connection methods, thus ensuring high reliability; 3. This invention is equipped with an angle adjustment device, which can be used for testing samples at different angles; 4. This invention is equipped with a spacing adjustment device, which can be used for testing samples of different lengths; 5. The present invention is provided with a sleeve, the test sample is placed inside the sleeve and then fixed with fixing screws, which can be used to test test samples of different sizes; 6. The sleeve provided by this invention can rotate 360 ​​degrees, making it suitable for testing samples from different orientations. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional unfolded structure; Figure 3 This is a three-dimensional structural diagram of the angle adjustment device of the present invention; Figure 4 yes Figure 3 A schematic diagram of the three-dimensional unfolded structure; Figure 5 This is a three-dimensional structural diagram of the positioning mechanism of the present invention; Figure 6 yes Figure 5 A schematic diagram of the three-dimensional unfolded structure.

[0019] The names of the components in the diagram are as follows: 1—Workbench; 2—Angle adjustment device; 21—Sliding platform; 211—Positioning screw; 22—Angle adjustment mechanism; 221—Base plate; 222—Panel; 223—Adjusting plate; 2231—Angle Adjustment Slot; 224—Adjusting screw; 225—Angle indicator; 3—Gap adjustment device; 31—Guide rail mounting plate; 32—Linear guide rail; 33—Slider; 34—Seat plate; 35—Positioning mechanism; 351—Positioning plate; 352—Empty slot; 353—Positioning gripper; 354—Locking screw; 36—Baffle; 4—Sample holder; 41—Bearing housing; 42—Bearing; 43—Sleeve; 44—Fixing screw; 45—Sleeve locking screw; 5—Installation shaft; 6—Test sample. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, some of the aforementioned terms, besides indicating direction or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0024] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] like Figure 1-6 As shown, the present invention provides a clamping device for testing the peel strength of bone ligaments, which includes a worktable 1, an angle adjustment device 2, a spacing adjustment device 3, and a sample fixing frame 4.

[0028] Specifically, such as Figure 1-6 As shown, the worktable 1 is a two-dimensional worktable. It can be adjusted in two directions: the X-axis (left and right) and the Y-axis (front and back). The worktable 1 is provided with a mounting shaft 5, which is used for fixed installation and connection with the testing equipment.

[0029] Specifically, such as Figure 1-6 As shown, the angle adjustment device 2 includes a sliding platform 21 fixedly mounted on the worktable 1, and an angle adjustment mechanism 22 fixedly mounted on the sliding platform 21. The sliding platform 21 can slide laterally. The sliding platform 21 is prior art and will not be described in detail here. The sliding platform 21 is provided with a positioning screw 211 for fixing the sliding platform 21.

[0030] Specifically, such as Figure 1-6As shown, the angle adjustment mechanism 22 includes a base plate 221 fixedly mounted on the sliding platform 21, a panel 222 rotatably connected to the base plate 221, and an adjustment plate 223 fixedly mounted on the base plate 221. The adjustment plate 223 has an angle adjustment slot 2231, and an adjustment screw 224 passes through the angle adjustment slot 2231 and is threadedly fixedly connected to the panel 222. The adjustment plate 223 has an angle scale, and the panel 222 has an angle indicator needle 225. The angle scale ranges from 0 to 90 degrees. There are two of each of the adjustment plate 223, the angle adjustment slot 2231, and the adjustment screw 224.

[0031] Specifically, such as Figure 1-6 As shown, the spacing adjustment device 3 includes a guide rail mounting plate 31 fixedly mounted on the panel 222, a linear guide rail 32 fixedly mounted on the guide rail mounting plate 31, a slider 33 linearly slidably connected to the linear guide rail 32, a base plate 34 fixedly mounted on the slider 33, and a positioning mechanism 35 fixedly mounted on the base plate 34. The number of sliders 33, base plates 34, and positioning mechanisms 35 are all two.

[0032] Specifically, such as Figure 1-6 As shown, the positioning mechanism 35 includes a positioning plate 351 fixedly installed on the base plate 34. The positioning plate 351 has a hollow groove 352 in the middle, and positioning claws 353 are provided on both sides of the hollow groove 352, and locking screws 354 are threadedly connected to the positioning claws 353. The spacing adjustment device 3 also includes baffles 36 installed on both sides of the guide rail mounting plate 31, and the number of baffles 36 is two.

[0033] Specifically, such as Figure 1-6 As shown, the sample holder 4 includes a bearing seat 41 fixedly mounted on the base plate 34, a bearing 42 fixedly mounted inside the bearing seat 41, and a sleeve 43 fixedly connected to the bearing 42. A fixing screw 44 is threaded onto the sleeve 43. There are two bearing seats 41 and two bearings 42. The number of fixing screws 44 is 4 to 12, specifically 8. The sleeve 43 is used to clamp the sample. The sample is placed inside the sleeve 43 and then locked in place with the fixing screws 44. The sample holder 4 also includes a sleeve locking screw 45 for locking the sleeve.

[0034] This invention provides a method for testing the peel strength of bone and ligaments, which includes the following steps: S1 Installation: The clamping device for testing the bone and ligament peel strength described above is fixedly installed on the testing equipment via the mounting shaft; S2 Sample Fixing: Place the sample in the sample holder and lock it in place; S3 Adjust worktable position: Adjust the worktable to a suitable position; S4 Adjust the position of the sliding platform: Adjust the sliding platform of the angle adjustment device to a suitable position; S5 Adjust Angle: Adjust the angle adjustment mechanism of the angle adjustment device to the test angle; S6 Test: The ligament on the test sample is clamped with a testing device for peel strength testing; Step S2 includes: S21. Place one end of the sample 6 into the sleeve 43 on the left side; S22. Adjust the distance between the two sliders 33 so that the other end of the sample is also placed in the sleeve 43 on the right side; S23. Tighten the locking screw 354 to make the positioning jaw 353 clamp the linear guide rail 32, thereby fixing the distance between the two sleeves 43; S24. Tighten the fixing screw 44 to fix the test sample 6 to the sleeve 43; S25. Tighten the locking screw 45 to fix the sleeve 43 and the bearing seat 41; Step S5 includes: S51. Loosen adjusting screw 224; S52. Rotate the right guide rail mounting plate 31 upwards so that the angle indicator needle 225 points to the specified angle scale on the adjustment plate 223; S53. Locking adjusting screw 224.

[0035] Specifically, step S3: Adjust the X-axis (left and right) and Y-axis (front and back) of the worktable 1 so that the sample 6 is directly below the chuck of the testing equipment.

[0036] Specifically, step S4: loosen the positioning screw 211, move the sliding platform 21 so that the sample 6 is directly below the chuck of the testing equipment, and then tighten the positioning screw 211.

[0037] This invention is primarily used to test the adhesion strength or bonding force of ligaments between bones. Dissection can be performed at different angles, such as 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees, and the magnitude of the dissection force is measured. It is mainly applied in medical and surgical fields, specifically during artificial ligament implantation to understand the magnitude and strength of the force required to meet specific needs. This invention uses animal bones and ligaments for simulation testing, not actual human bones and ligaments.

[0038] Working principle: Place the sample 6 inside the sleeve 43, adjust the distance between the two sliders 33 so that the sample 6 is placed exactly inside the two sleeves 43, tighten the fixing screw 44 to lock the sample 6 in place, then tighten the locking screw 354 to lock the two positioning jaws 353 into the linear guide rail 32, then rotate the sleeve 43 away from the angle adjustment mechanism 22 to rotate the panel 222 around the base plate 221 to the angle to be tested, such as 30 degrees, then lock the adjusting plate 223 with the adjusting screw 224, and finally clamp the ligament on the sample 6 with the testing equipment, and the test can be performed.

[0039] The beneficial effects of this invention are: 1. This invention includes a worktable, an angle adjustment device, a spacing adjustment device, a sample holder, etc., with few parts, thus resulting in a simple structure and low cost; 2. This invention uses mechanical connection methods, thus ensuring high reliability; 3. This invention is equipped with an angle adjustment device, which can be used for testing samples at different angles; 4. This invention is equipped with a spacing adjustment device, which can be used for testing samples of different lengths; 5. The present invention is provided with a sleeve, the test sample is placed inside the sleeve and then fixed with fixing screws, which can be used to test test samples of different sizes; 6. The sleeve provided by this invention can rotate 360 ​​degrees, making it suitable for testing samples from different orientations.

[0040] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A clamping device for testing the peel strength of bone and ligaments, characterized in that: It includes a worktable (1), an angle adjustment device (2) mounted on the worktable (1), a spacing adjustment device (3) mounted on the angle adjustment device (2), and a sample holder (4) mounted on the spacing adjustment device (3).

2. The clamping device for testing the peel strength of bone and ligaments according to claim 1, characterized in that: The worktable (1) is a two-dimensional worktable.

3. The clamping device for testing the peel strength of bone and ligaments according to claim 1, characterized in that: The angle adjustment device (2) includes a sliding platform (21) mounted on the worktable (1) and an angle adjustment mechanism (22) mounted on the sliding platform (21).

4. The clamping device for testing the peel strength of bone and ligaments according to claim 3, characterized in that: The angle adjustment mechanism (22) includes a base plate (221) mounted on the sliding platform (21), a panel (222) rotatably connected to the base plate (221), and an adjustment plate (223) mounted on the base plate (221). The adjustment plate (223) is provided with an angle adjustment slot (2231), and an adjustment screw (224) passes through the angle adjustment slot (2231) and is threadedly connected to the panel (222).

5. The clamping device for testing the peel strength of bone and ligaments according to claim 3, characterized in that: The number of adjustment plates (223) is 2, the number of angle adjustment slots (2231) is 2, and the number of adjustment screws (224) is 2.

6. The clamping device for testing the peel strength of bone and ligaments according to claim 4, characterized in that: The spacing adjustment device (3) includes a guide rail mounting plate (31) mounted on the panel (222), a linear guide rail (32) mounted on the guide rail mounting plate (31), a slider (33) linearly slidably connected to the linear guide rail (32), a seat plate (34) mounted on the slider (33), and a positioning mechanism (35) mounted on the seat plate (34).

7. The clamping device for testing the peel strength of bone and ligaments according to claim 6, characterized in that: The positioning mechanism (35) includes a positioning plate (351) mounted on the base plate (34), the positioning plate (351) has a hollow groove (352) in the middle, and positioning claws (353) are provided on both sides of the hollow groove (352), and locking screws (354) are threadedly connected to the positioning claws (353).

8. The clamping device for testing the peel strength of bone and ligaments according to claim 6, characterized in that: The spacing adjustment device (3) also includes baffles (36) installed on both sides of the guide rail mounting plate (31).

9. The clamping device for testing the peel strength of bone and ligaments according to claim 6, characterized in that: The sample holder (4) includes a bearing seat (41) mounted on the base plate (34), a bearing (42) installed inside the bearing seat (41), a sleeve (43) fixedly connected to the bearing (42), and a fixing screw (44) installed on the sleeve (43).

10. A method for testing the peel strength of bone and ligaments, characterized in that, It includes the following steps: S1. The clamping device for testing the bone and ligament peel strength according to any one of claims 1-9 is fixedly installed on the testing equipment via the mounting shaft (5); S2. Place the test sample (6) in the test sample holder (4) and lock it; S3. Adjust the worktable (1) to a suitable position; S4. Adjust the sliding platform (21) of the angle adjustment device (2) to a suitable position; S5. Adjust the angle adjustment mechanism (22) of the angle adjustment device (2) to the test angle; S6. Clamp the ligament on the test sample (6) with the testing equipment to perform a peel strength test; Step S2 includes: S21. Place one end of the test sample (6) into the sleeve (43) on the left side; S22. Adjust the distance between the two sliders (33) so that the other end of the sample is also placed in the sleeve (43) on the right side; S23. Tighten the locking screw (354) to clamp the positioning jaws (353) onto the linear guide rail (32), thereby fixing the distance between the two sleeves (43); S24. Tighten the fixing screw (44) to fix the test sample (6) to the sleeve (43); S25. Tighten the sleeve locking screw (45) to fix the sleeve (43) and the bearing seat (41); Step S5 includes: S51. Loosen the adjusting screw (224); S52. Rotate the right guide rail mounting plate (31) upwards so that the angle indicator needle (225) points to the specified angle scale on the adjustment plate (223); S53. Locking adjusting screw (224).

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