Multifunctional bone hardness testing clamp
By designing a multifunctional bone stiffness testing fixture, and utilizing a movable seat, an adjustable spindle rotation, and multi-angle adjustment components, a stable clamping mechanism for irregularly shaped bones is achieved, solving the problems of difficult testing and limited range in existing technologies.
Patent Information
- Application Number
- CN202422550550.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-10-21
AI Technical Summary
Existing bone hardness testing fixtures are difficult to match with bones of various unique shapes, resulting in testing difficulties and limited scope.
A multifunctional bone stiffness testing fixture was designed, including a movable seat, an adjusting spindle, a multi-angle adjusting component, and an auxiliary clamping component. By rotating the adjusting spindle and the swing of the movable seat, the orientation and position of the main clamping block can be adjusted. Combined with the auxiliary clamping component, a stable clamping of irregular bones can be achieved.
It achieves stable clamping of various irregularly shaped bones, ensuring the stability of the bones during testing and solving the problem of limited testing range.
Smart Images
Figure CN223640699U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bone hardness testing equipment, specifically a multifunctional bone hardness testing fixture. Background Technology
[0002] The skeleton acts as a rigid framework for the human body, supporting its overall shape. Bones are divided into cortical bone and spongy bone, with the cortical bone being extremely hard. Diamond has a hardness of 10, while the hardest bone tissue in the human body, tooth enamel, has a hardness of 6-7, and ordinary bone has a hardness of 4-5. The hardness of the cortical bone depends on its composition and structure. Bone tissue is like reinforced concrete, both hard and resilient. The organic components of bone, like reinforcing bars, form a network structure, arranged in layers and tightly, giving the bone its elasticity and resilience. The inorganic components of bone, especially hydroxyapatite (formed by the combination of calcium and phosphorus), tightly fill the network structure of the organic components, like cement in reinforced concrete, giving the bone considerable hardness and strength.
[0003] Although bone tissue has relatively high strength and can withstand great stress, its low stiffness means that even a small deformation can cause it to break. Therefore, the properties of bone are closer to those of glass than rubber.
[0004] Bone stiffness testing is a method for assessing the physical properties of bone, primarily used to understand bone strength and health, especially in the research and diagnosis of osteoporosis, fracture risk assessment, skeletal developmental abnormalities, and other skeletal diseases. Research on bone stiffness contributes to a deeper understanding of the biological characteristics of bone, including its structure, composition, and biomineralization processes. By studying bone stiffness, scientists can better understand the mechanisms of osteoporosis, fractures, osteoarthritis, and other skeletal diseases. Bone stiffness research helps in the development and evaluation of new drugs, treatments, and interventions to improve bone health. In the fields of biomaterials and tissue engineering, bone stiffness research helps in the design and fabrication of artificial bones and scaffolds that more closely resemble the properties of natural bone. Analysis of bone stiffness can provide insights into human and other animal evolution, dietary habits, and lifestyle changes. In forensic medicine, measurements of bone stiffness can help determine the age and identity of remains. In sports training and rehabilitation, bone stiffness testing can assess the skeletal health of athletes and the effects of exercise on bones.
[0005] Therefore, bone hardness testing has a wide range of applications in various fields. The current method is to clamp the bone and use a hardness tester to measure a designated location on the bone. This is currently a relatively effective method. In existing technologies, most hardness testers use a horizontal stage to place the test object and then directly contact the indenter with the test object. There are also clamping devices that can hold spheres and irregular objects. However, when the test object is an irregular bone, it may slip during the test or fail to detect both ends of the femoral head, which will affect the test results and limit the scope of application. Utility Model Content
[0006] This invention provides a multifunctional bone hardness testing fixture that can solve the problem that existing bone hardness testing fixtures are difficult to match with bones of various unique shapes, resulting in testing difficulties and limited range.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional bone hardness testing fixture, including a base and a movable seat, the lower end of which is rotatably connected to the base via a rotating shaft; an adjusting main shaft, which is laterally embedded inside the movable seat, and the movable seat is provided with a tension adjustment component that clamps the adjusting main shaft, allowing the adjusting main shaft to rotate and adjust its position along its central axis; adjusting screws are provided at both ends of the adjusting main shaft along the axial direction; a pair of main clamping blocks are installed in slots on one side of the adjusting main shaft and are threadedly connected to the two adjusting screws respectively; a multi-angle adjustment component is installed on one side of the adjusting main shaft, connecting the adjusting main shaft to an auxiliary clamping component. The rotatable adjusting main shaft allows adjustment of the orientation of the main clamping blocks, and the movable seat can swing left and right around the rotating shaft, also adjusting the orientation of the main clamping blocks to meet the testing requirements of bones with different shapes and testing positions. The multi-angle adjustment component and the auxiliary clamping component can assist in clamping various irregularly shaped bones, ensuring the firmness of the bone clamping during testing.
[0008] Preferably, the movable seat has opposing side walls on both sides, and a groove is centrally located at the upper end of the side wall. The adjusting spindle is embedded in the groove and connected to the side wall through a tension adjustment component. By setting the side wall and the groove, the adjusting spindle can rotate in a space without interference, which also facilitates the installation of the tension adjustment component.
[0009] Preferably, the tension adjustment assembly includes a clamping ring and support shafts and adjusting screws respectively disposed on the front and rear sides of the upper end of the side wall. The support shafts are connected to one end of the clamping ring, and the adjusting screws are threaded into the side wall and connected at one end to the other end of the clamping ring. The adjusting spindle is located inside the clamping ring and is wrapped by the clamping ring. By rotating the adjusting screw, the clamping ring can be deformed, thereby clamping or loosening the adjusting spindle. The operation is simple, and the adjusting spindle can rotate 360°.
[0010] Preferably, bearing blocks are embedded at both ends of the adjusting spindle, and the adjusting screw passes through the corresponding bearing block. The bearing blocks can be replaced, and the adjusting screw can rotate freely between the adjusting screw and the bearing block. At the same time, the bearing block also supports the adjusting screw.
[0011] Preferably, the multi-angle adjustment assembly includes a connecting shaft connected to the side wall of the adjustment spindle and a connecting block sleeved on the connecting shaft. A first ball joint is connected to one side of the connecting block, and a second ball joint is connected to one end of the auxiliary clamping assembly. The ball heads of the first and second ball joints are clamped by two clamping plates, and the middle of the two clamping plates are connected by screws. The first and second ball joints can move relatively much relative to the clamping plates, so that the corresponding auxiliary clamping assembly and the connecting block can also form a relatively large degree of freedom, allowing the auxiliary clamping assembly to freely adjust its position and direction.
[0012] Preferably, a locking screw is installed on the side wall of the connecting block, and the end of the locking screw abuts against the side wall of the connecting shaft. The position of the connecting block on the connecting shaft can be adjusted by the locking screw, thereby improving the degree of freedom of movement of the auxiliary clamping assembly.
[0013] Preferably, the auxiliary clamping assembly includes a first clamping block and a second clamping block. One end of the first clamping block and the second clamping block are rotatably connected by a pin. A side screw is connected to the end of the first clamping block near the pin. One end of the side screw abuts against the side wall of one end of the second clamping block. By rotating the side screw, the first clamping block and the second clamping block can rotate around the pin to clamp or release the bone.
[0014] Preferably, anti-slip pads are installed on the opposite sidewalls of the first and second clamping blocks, as well as on the opposite sidewalls of the pair of main clamping blocks, which can increase the friction between the clamping blocks and the bone, and improve the clamping firmness of the bone.
[0015] Preferably, the adjusting spindle is provided with knobs at both ends of the axial direction that are connected to the ends of the adjusting screw, so as to facilitate the rotation operation of the adjusting screw.
[0016] Preferably, the adjusting screws at both ends of the adjusting spindle are axially connected as one piece, and the threads on the outer sides of the two ends of the adjusting screws are in opposite directions. By rotating either end of the adjusting screw, the main clamping block can move relative to the bone, clamping or releasing it, which is convenient to operate.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] With a reasonable structure, the orientation of the main clamping block can be adjusted by setting a rotatable adjusting spindle. At the same time, the movable seat can swing left and right around the pivot, which can also adjust the orientation of the main clamping block to meet the testing requirements of bones with different shapes and different testing positions. By setting multi-angle adjustment components and auxiliary clamping components, various irregularly shaped bones can be clamped to ensure the firmness of the bones during testing. This solves the problem that existing bone hardness testing fixtures are difficult to match with various uniquely shaped bones, resulting in testing difficulties and limited range. Attached Figure Description
[0019] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;
[0021] Figure 3 This is a top view of the structure of this utility model;
[0022] Figure 4 for Figure 3 AA-direction sectional view of the structure;
[0023] Figure 5 for Figure 3 BB-direction sectional view of the structure;
[0024] Figure 6 for Figure 3 CC-direction cross-sectional view of the structure.
[0025] Figure label:
[0026] 1. Base; 11. Clamping ring; 12. Bearing block; 13. Anti-slip pad; 14. Adjusting screw; 2. Movable seat; 21. Side wall; 22. Groove; 3. Main clamping block; 4. Auxiliary clamping assembly; 41. Second clamping block; 42. First clamping block; 43. Pin; 44. Side top screw; 5. Multi-angle adjustment assembly; 51. Second ball joint; 52. Clamping plate; 53. Screw; 54. First ball joint; 55. Connecting shaft; 56. Locking screw; 57. Connecting block; 6. Adjusting spindle; 7. Adjusting screw; 8. Rotating shaft; 9. Support insert shaft; 10. Knob. Detailed Implementation
[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0028] This invention addresses the problem that existing bone hardness testing fixtures are difficult to match with bones of various unique shapes, leading to testing difficulties and limited testing range. Figure 1-6As shown, the following technical solution is provided: A multifunctional bone stiffness testing fixture, including a base 1 and a movable seat 2, the lower end of which is rotatably connected to the base 1 via a rotating shaft 8; an adjusting spindle 6, which is laterally embedded inside the movable seat 2, and the movable seat 2 is provided with a tension adjustment component that clamps the adjusting spindle 6 so that the adjusting spindle 6 can rotate along its central axis to adjust its position; adjusting screws 14 are axially arranged at both ends inside the adjusting spindle 6; a pair of main clamping blocks 3 are installed in slots on one side of the adjusting spindle 6, and are respectively connected to the two adjusting... The screw 14 is threaded; a multi-angle adjustment component 5 is installed on one side of the adjustment spindle 6. The multi-angle adjustment component 5 connects the adjustment spindle 6 to the auxiliary clamping component 4. By setting the rotatable adjustment spindle 6, the orientation of the main clamping block 3 can be adjusted. At the same time, the movable seat 2 can swing left and right around the rotating shaft 8, and the orientation of the main clamping block 3 can also be adjusted to meet the detection requirements of bones with different shapes and different detection positions. By setting the multi-angle adjustment component 5 and the auxiliary clamping component 4, various irregular bones can be assisted in clamping, ensuring the firmness of bone clamping during detection.
[0029] Specifically, the upper middle part of the base 1 is connected to the lower middle part of the movable seat 2 via a pivot 8, allowing the movable seat 2 to swing left and right around the pivot 8. The pair of main clamping blocks 3 clamp the main body of the bone. Rotating the adjusting screw 14 allows the main clamping blocks 3 to move left and right. After clamping the bone, rotating the main shaft 6 adjusts the orientation of the main clamping blocks 3. The auxiliary clamping assembly 4 can be moved to various positions under the control of the angle adjusting assembly 5. Bones of various shapes can be simultaneously clamped and fixed by the main clamping blocks 3 and the auxiliary clamping assembly 4.
[0030] like Figure 5 As shown, the movable seat 2 has opposing side walls 21 on both sides. The upper end of the side wall 21 has a groove 22 in the center. The adjusting spindle 6 is embedded in the groove 22 and connected to the side wall 21 through the tension adjustment component. By setting the side wall 21 and the groove 22, the adjusting spindle 6 can rotate in a space without interference, which also facilitates the installation of the tension adjustment component. The groove 22 is arc-shaped.
[0031] In this embodiment, as Figure 5As shown, the tension adjustment assembly includes a clamping ring 11 and support shafts 9 and adjusting screws 7 respectively disposed on the front and rear sides of the upper end of the side wall 21. The support shafts 9 are connected to one end of the clamping ring 11, and the adjusting screws 7 are threaded into the side wall 21 and connected at one end to the other end of the clamping ring 11. The adjusting main shaft 6 is located inside the clamping ring 11 and is wrapped by the clamping ring 11. By rotating the adjusting screws 7, the clamping ring 11 can be deformed, causing the adjusting main shaft 6 to clamp or loosen. The operation is simple. The adjusting main shaft 6 can rotate 360°. The clamping ring 11 is C-shaped. The support shafts 9 are fixedly set, with one end inserted into the insertion hole at one end of the clamping ring 11. The rotation of the adjusting screws 7 can cause the adjusting screws 7 to move axially and squeeze the other end of the clamping ring 11.
[0032] In this embodiment, as Figure 5 As shown, bearing blocks 12 are embedded at both ends of the adjusting spindle 6, and the adjusting screw 14 passes through the corresponding bearing block 12. The bearing block 12 can be replaced, and the adjusting screw 14 and the bearing block 12 can rotate freely. At the same time, the bearing block 12 also supports the adjusting screw 14.
[0033] In this embodiment, as Figure 1 and 6 As shown, the multi-angle adjustment component 5 includes a connecting shaft 55 connected to the side wall of the adjustment main shaft 6 and a connecting block 57 sleeved on the connecting shaft 55. A first ball joint rod 54 is connected to one side of the connecting block 57, and a second ball joint rod 51 is connected to one end of the auxiliary clamping component 4. The ball heads of the first ball joint rod 54 and the second ball joint rod 51 are clamped by two clamping plates 52. The middle parts of the two clamping plates 52 are connected by screws 53. The first ball joint rod 54 and the second ball joint rod 51 can make relatively large movements relative to the clamping plates 52. In this way, the corresponding auxiliary clamping component 4 and the connecting block 57 can also form a relatively large degree of freedom, allowing the auxiliary clamping component 4 to freely adjust its position and direction.
[0034] At the same time, such as Figure 5 As shown, a locking screw 56 is installed on the side wall of the connecting block 57. The end of the locking screw 56 abuts against the side wall of the connecting shaft 55. The position of the connecting block 57 on the connecting shaft 55 can be adjusted by the locking screw 56, thereby improving the degree of freedom of movement of the auxiliary clamping assembly 4.
[0035] In this embodiment, as Figure 6As shown, the auxiliary clamping assembly 4 includes a first clamping block 42 and a second clamping block 41. One end of the first clamping block 42 and the second clamping block 41 are rotatably connected by a pin 43. A side screw 44 is connected to the end of the first clamping block 42 near the pin 43. One end of the side screw 44 abuts against the side wall of one end of the second clamping block 41. By rotating the side screw 44, the first clamping block 42 and the second clamping block 41 can rotate around the pin 43 to clamp or release the bone.
[0036] like Figure 1-6 As shown, anti-slip pads 13 are installed on the opposite sidewalls of the first clamping block 42 and the second clamping block 41, as well as on the opposite sidewalls of the pair of main clamping blocks 3. These pads can increase the friction between the pads and the bone, thereby increasing the firmness of the clamping of the bone. The anti-slip pads 13 are arc-shaped.
[0037] like Figure 4 As shown, the adjusting spindle 6 has knobs 10 at both ends of its axial direction that are connected to the ends of the adjusting screws 14, facilitating rotation of the adjusting screws 14. The adjusting screws 14 at both ends of the adjusting spindle 6 are axially connected as a single unit, and the threads on the outer sides of the two ends of the adjusting screws 14 are in opposite directions. Rotating either end of the adjusting screw 14 allows the main clamping block 3 to move relative to the bone, clamping or releasing it, making operation convenient.
[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0039] Furthermore, in this utility model, descriptions involving terms such as "primary," "secondary," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "primary" or "secondary" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.
[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A multifunctional bone stiffness testing fixture, comprising a base (1), characterized in that, Also includes: The lower end of the movable seat (2) is rotatably connected to the base (1) via a pivot (8); Adjustment spindle (6), the adjustment spindle (6) is horizontally embedded inside the movable seat (2), the movable seat (2) is provided with a tension adjustment component that clamps the adjustment spindle (6) so that the adjustment spindle (6) can rotate along its central axis to adjust its position, and the two ends of the adjustment spindle (6) are provided with adjustment screws (14) along the axial direction. A pair of main clamping blocks (3) are installed in the slot on one side of the adjusting main shaft (6) and are threadedly connected to two adjusting screws (14) respectively; A multi-angle adjustment component (5) is installed on one side of the adjustment spindle (6), and the multi-angle adjustment component (5) connects the adjustment spindle (6) to the auxiliary clamping component (4).
2. The multifunctional bone stiffness testing fixture according to claim 1, characterized in that: The movable seat (2) has opposing side walls (21) on both sides. The upper end of the side wall (21) has a groove (22) in the center. The adjusting spindle (6) is embedded in the groove (22) and connected to the side wall (21) through a tension adjustment component.
3. The multifunctional bone stiffness testing fixture according to claim 2, characterized in that: The tension adjustment assembly includes a clamping ring (11) and a support insert (9) and an adjusting screw (7) respectively disposed on the front and rear sides of the upper end of the side wall (21). The support insert (9) is connected to one end of the clamping ring (11), the adjusting screw (7) is threaded to the side wall (21) and its end is connected to the other end of the clamping ring (11), and the adjusting main shaft (6) is located inside the clamping ring (11) and is wrapped by the clamping ring (11).
4. The multifunctional bone stiffness testing fixture according to claim 1, characterized in that: The two ends of the adjusting spindle (6) are fitted with bearing blocks (12), and the adjusting screw (14) passes through the corresponding bearing block (12).
5. The multifunctional bone stiffness testing fixture according to claim 1, characterized in that: The multi-angle adjustment assembly (5) includes a connecting shaft (55) connected to the side wall of the adjustment main shaft (6) and a connecting block (57) sleeved on the connecting shaft (55). A first ball head rod (54) is connected to one side of the connecting block (57), and a second ball head rod (51) is connected to one end of the auxiliary clamping assembly (4). The ball heads of the first ball head rod (54) and the second ball head rod (51) are clamped by two clamping plates (52), and the middle of the two clamping plates (52) is connected by screws (53).
6. The multifunctional bone stiffness testing fixture according to claim 5, characterized in that: A locking screw (56) is installed on the side wall of the connecting block (57), and the end of the locking screw (56) abuts against the side wall of the connecting shaft (55).
7. The multifunctional bone stiffness testing fixture according to claim 1 or 5, characterized in that: The auxiliary clamping assembly (4) includes a first clamping block (42) and a second clamping block (41). One end of the first clamping block (42) and the second clamping block (41) are rotatably connected by a pin (43). A side screw (44) is connected to one end of the first clamping block (42) near the pin (43). One end of the side screw (44) abuts against one side wall of the second clamping block (41).
8. The multifunctional bone stiffness testing fixture according to claim 7, characterized in that: Anti-slip pads (13) are installed on the opposite side walls of the first clamping block (42) and the second clamping block (41), as well as on the opposite side walls of the pair of main clamping blocks (3).
9. The multifunctional bone stiffness testing fixture according to claim 1, characterized in that: The adjusting spindle (6) is provided with knobs (10) at both ends of the axial direction that are connected to the ends of the adjusting screw (14).
10. The multifunctional bone stiffness testing fixture according to claim 1, characterized in that: The adjusting screws (14) at both ends of the adjusting spindle (6) are axially connected as one unit, and the threads on the outer sides of the two ends of the adjusting screws (14) are opposite.