Movable clamp for spine specimen
By designing a movable fixture for the spinal specimen and using arc components and angle measuring instruments to simulate the arc movement of the human spine, the problem of the existing technology that cannot truly simulate the movement of the human spine is solved, and the accuracy of mechanical experiments is improved.
Patent Information
- Application Number
- CN202422561159.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Existing technologies cannot effectively simulate the real movement of the human spine, resulting in inaccurate mechanical research.
A movable fixture for spinal specimens is designed, which includes an arc component, a fixed block and an angle measuring instrument. The arc component drives the fixed block to perform arc motion, and a vertical external force is applied using a mechanical testing machine to simulate the arc motion of the human spine.
It achieves a true simulation of human spinal movement and improves the accuracy of mechanical experiments and data reliability.
Smart Images
Figure CN223449647U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of spine mechanics research technology, especially relates to the movable clamp of spine specimen. BACKGROUND
[0002] The spine has the effect of supporting the body and relieving impact, and it has high value to truly reproduce the stress state of the spine and experimentally study the spine under different loading conditions.
[0003] At present, the mechanical research on the spine specimen is mostly to connect the upper end of the spine with a mechanical testing machine and the lower end with a base, to study the angle change of the spine specimen in forward bending and backward bending through the rotation of the base, and to further study the mechanical properties (such as stress and strain) of the spine specimen. However, this method cannot restore the actual movement of the human spine, that is, the actual movement of the spine should be that the upper end is fixed and the lower end is movable, for example, when the neck (C0-C7) is forward bent and backward stretched, the head and neck (C0) should be moved, and the torso below T1 should be fixed; for another example, when the lumbar vertebrae (L1-L5) are forward bent and backward stretched, the waist (L1) should be moved, and the pelvis (S1) below should be fixed. In the mechanical testing machine experiment, the mechanical testing machine (acting as the head) is fixed (only mechanical loading in the up-down direction, not arc motion), and the base (acting as the torso) moves. Therefore, the current mechanical research scheme for the spine specimen cannot effectively simulate the actual movement of the human spine.
[0004] Based on this, in order to solve the above technical problems, the utility model provides a novel movable clamp for spine specimen. UTILITY MODEL CONTENTS
[0005] The utility model provides a movable clamp for spine specimen, which can effectively simulate the actual movement of the human spine.
[0006] The utility model embodiment provides a movable clamp for spine specimen, which comprises:
[0007] The arc-shaped assembly is provided with a first connecting piece fixed with an external mechanical testing machine;
[0008] The fixed block is connected with the arc-shaped assembly, and is used for fixing the top end of the spine specimen to be studied; the bottom end of the spine specimen is fixed through an external base; and the arc-shaped assembly can drive the fixed block to move in an arc line.
[0009] The angle measuring instrument is used for measuring the real-time angle of the fixed block when moving in an arc line.
[0010] When the spine specimen is loaded, the arc-shaped assembly drives the fixed block to move in an arc line, and at the same time, the mechanical testing machine is used to apply an external force in the vertical direction to the arc-shaped assembly.
[0011] In a possible design, the arc-shaped component is an arc motor.
[0012] In a possible design, the arc motor comprises a stator portion in an arc shape and a rotor portion arranged outside the stator portion, the first connecting member is arranged on the stator portion, the fixing block is connected with the rotor portion, and the rotor portion is capable of moving in an arc shape along the stator portion.
[0013] In a possible design, the base is located at a center of curvature of the stator portion.
[0014] In a possible design, the arc-shaped component comprises an arc-shaped guide rail and a sliding block arranged on the arc-shaped guide rail, the first connecting member is arranged on the arc-shaped guide rail, the fixing block is connected with the sliding block, and the sliding block is capable of moving in an arc shape along the arc-shaped guide rail.
[0015] In a possible design, the base is located at a center of curvature of the arc-shaped guide rail.
[0016] In a possible design, the first connecting member is arranged on a top wall at a center of the arc-shaped guide rail, and the sliding block does not interfere with the first connecting member when moving in an arc shape along the arc-shaped guide rail.
[0017] In a possible design, the sliding block is sleeved on an outer periphery of the arc-shaped guide rail, a top portion of the sliding block has an opening, and the first connecting member is capable of passing through the opening when the sliding block moves in an arc shape along the arc-shaped guide rail.
[0018] In a possible design, the sliding block and the fixing block are connected through a second connecting member.
[0019] In a possible design, the first connecting member and the second connecting member are both bolts; and / or,
[0020] The fixing block is a square opening structure and is used for accommodating a top end of the spine specimen; and / or,
[0021] The arc-shaped guide rail, the sliding block and the fixing block are all made of stainless steel material, the angle measuring instrument is a magnetic electronic angle measuring instrument and is adsorbed to an outer surface of the fixing block.
[0022] It can be seen that the movable clamp of the spinal column specimen provided by the utility model can drive the fixed block to make an arc motion through the arc assembly, the fixed block and the angle measuring instrument, and simultaneously apply an external force in the vertical direction to the arc assembly by using the mechanical testing machine, so that the mechanical testing machine and the base are fixed, and only the spinal column specimen makes an arc motion; in addition, the real-time angle of the fixed block during the arc motion can be measured by using the angle measuring instrument. Therefore, the above technical scheme can effectively realize the real simulation of the human spinal column activity. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 The structure schematic view of the movable clamp of the spinal column specimen provided by the utility model embodiment is shown in the figure.
[0024] Figure 2 The sectional view of the movable clamp shown in the figure is shown in the figure. Figure 1
[0025] Figure 3 The structure schematic view of the slider in the movable clamp shown in the figure is shown in the figure. Figure 1
[0026] Reference signs:
[0027] 1-arc assembly;
[0028] 11-first connecting piece;
[0029] 12-arc-shaped guide rail;
[0030] 13-slider;
[0031] 131-opening;
[0032] 2-fixed block;
[0033] 3-angle measuring instrument;
[0034] 4-second connecting piece.
[0035] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments consistent with the present utility model and, together with the specification, serve to explain the principles of the present utility model. DETAILED DESCRIPTION
[0036] The utility model will be described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.
[0037] In the description of the embodiments of the utility model, unless another definite provision and limitation, the term "first", "second" is only used for the purpose of description, and can not be understood as indicating or implying relative importance;Unless otherwise provided or explained, the term "a plurality of" means two or more than two;The terms "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixedly connected, or can be detachably connected, or integrally connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0038] In the description of the present specification, it should be understood that the "upper", "lower" and other orientation words described in the embodiments of the utility model are described with the angle shown in the drawings, and should not be understood as limiting the embodiments of the utility model.In addition, in the context, it should also be understood that when referring to one element connected to another element "on" or "below", it can be directly connected to another element "on" or "below", or indirectly connected to another element "on" or "below" through an intermediate element.
[0039] As shown in Figures 1 to 3 The utility model provides a movable clamp of spinal column specimen, the movable clamp includes arc assembly 1, fixed block 2 and angle measuring instrument 3, wherein:
[0040] Arc assembly 1 is provided with the first connecting piece 11 fixed with external mechanical testing machine (not shown in the drawing);
[0041] Fixed block 2 is connected with arc assembly 1, and fixed block 2 is used for fixing the top end of the spinal column specimen (not shown in the drawing) to be studied, the bottom end of the spinal column specimen is fixed through external base (not shown in the drawing), and arc assembly 1 can drive fixed block 2 to move in an arc;
[0042] Angle measuring instrument 3 is used for measuring the real-time angle when fixed block 2 moves in an arc;
[0043] When the movable loading is carried out to the spinal column specimen, arc assembly 1 drives fixed block 2 to move in an arc, and simultaneously utilizes mechanical testing machine to exert external force in the vertical direction to arc assembly 1.
[0044] In the embodiment, by setting the arc-shaped assembly 1, the fixed block 2 and the angle measuring instrument 3, when the spine specimen is subjected to the activity loading, the arc-shaped assembly 1 drives the fixed block 2 to move in an arc line, and at the same time, the arc-shaped assembly 1 is subjected to the external force in the vertical direction by the mechanical testing machine, so that the mechanical testing machine and the base are fixed, and only the spine specimen moves in the arc line; in addition, the real-time angle of the fixed block 2 when moving in the arc line can be measured by the angle measuring instrument 3. Therefore, the above technical scheme can effectively realize the real simulation of the human spine activity.
[0045] In an embodiment of the utility model, the arc-shaped assembly 1 is an arc motor (not shown in the figure).
[0046] Of course, the arc-shaped assembly 1 can also be other forms of structures, for example, the combination of the ordinary driving source and the arc-shaped guide rail for realizing the arc motion, wherein the ordinary driving source can be the motor driving source, the air pressure driving source and the hydraulic driving source, which are not limited here.
[0047] In an embodiment of the utility model, the arc motor comprises a stator part in an arc line and a rotor part arranged outside the stator part, the first connecting piece 11 is arranged on the stator part, the fixed block 2 is connected with the rotor part, and the rotor part can move in an arc line along the stator part.
[0048] In this way, the structure composition of the arc motor can be simplified as far as possible under the premise of guaranteeing the function realization of the arc motor, so that the function of the arc motion is realized more simply and effectively.
[0049] In an embodiment of the utility model, the base is located at the curvature center of the stator part, so that the mechanical experiment on the spine specimen is better performed, and the more prepared mechanical data is obtained.
[0050] In an embodiment of the utility model, the arc-shaped assembly 1 comprises an arc-shaped guide rail 12 and a sliding block 13 arranged on the arc-shaped guide rail 12, the first connecting piece 11 is arranged on the arc-shaped guide rail 12, the fixed block 2 is connected with the sliding block 13, and the sliding block 13 can move in an arc line along the arc-shaped guide rail 12. In this way, the specific function of the arc-shaped assembly 1 can be realized simply and more cost-effectively.
[0051] In an embodiment of the utility model, the base is located at the curvature center of the arc-shaped guide rail 12, so that the mechanical experiment on the spine specimen is better performed, and the more prepared mechanical data is obtained.
[0052] In an embodiment of the utility model, the first connecting piece 11 is arranged on the top wall at the center of the arc-shaped guide rail 12, and the sliding block 13 will not interfere with the first connecting piece 11 when moving in an arc line along the arc-shaped guide rail 12. In this way, the mechanical loading of the mechanical testing machine can be conveniently realized, and the arc line motion of the sliding block 13 is not hindered.
[0053] In one embodiment of the present application, the sliding block 13 is sleeved on the outer periphery of the arc-shaped guide rail 12, the top of the sliding block 13 has an opening 131, and the first connecting piece 11 can pass through the opening 131 when the sliding block 13 moves along the arc-shaped guide rail 12.
[0054] In one embodiment of the present application, the sliding block 13 and the fixed block 2 are connected through the second connecting piece 4.
[0055] In one embodiment of the present application, the first connecting piece 11 and the second connecting piece 4 are both bolts.
[0056] In one embodiment of the present application, the fixed block 2 is a square opening structure and is used for accommodating the top end of the spinal column specimen.
[0057] In one embodiment of the present application, the arc-shaped slide rail, the sliding block 13 and the fixed block 2 are all made of stainless steel material, the angle measuring instrument 3 is a magnetic suction type electronic angle measuring instrument and is adsorbed on the outer surface of the fixed block 2.
[0058] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A movable fixture for spinal specimens, characterized in that: include: An arc-shaped component (1) is provided with a first connecting member (11) fixed to an external mechanical testing machine; A fixed block (2) is connected to the arc-shaped component (1), the fixed block (2) is used to fix the top end of the spinal specimen to be studied, the bottom end of the spinal specimen is fixed by an external base, and the arc-shaped component (1) can drive the fixed block (2) to move in an arc; An angle measuring instrument (3) is used to measure the real-time angle of the fixed block (2) when it moves in an arc; When the spinal column specimen is subjected to active loading, the arc-shaped component (1) drives the fixed block (2) to perform arc motion, and at the same time, the mechanical testing machine is used to apply an external force in the vertical direction to the arc-shaped component (1).
2. The movable clamp for spinal column specimen according to claim 1, characterized in that: The arc-shaped component (1) is an arc motor.
3. The movable clamp for spinal column specimen according to claim 2, characterized in that: The arc motor comprises an arc-shaped stator part and a rotor part arranged outside the stator part, the first connecting member (11) is arranged on the stator part, the fixed block (2) is connected to the rotor part, and the rotor part can move in an arc along the stator part.
4. The movable clamp for spinal column specimen according to claim 3, characterized in that: The base is located at the center of curvature of the stator portion.
5. The movable clamp for spinal column specimen according to claim 1, characterized in that: The arc component (1) comprises an arc guide rail (12) and a slider (13) arranged on the arc guide rail (12); the first connecting member (11) is arranged on the arc guide rail (12); the fixed block (2) is connected to the slider (13); and the slider (13) is capable of performing arc motion along the arc guide rail (12).
6. The movable fixture for spinal column specimen according to claim 5, characterized in that: The base is located at the center of curvature of the arc-shaped guide rail (12).
7. The movable fixture for spinal column specimen according to claim 5, characterized in that: The first connecting member (11) is arranged on the top wall at the center of the arc-shaped guide rail (12), and the sliding block (13) will not interfere with the first connecting member (11) when performing arc motion along the arc-shaped guide rail (12).
8. The movable fixture for spinal column specimen according to claim 7, characterized in that: The slider (13) is sleeved on the outer periphery of the arc-shaped guide rail (12), and the top of the slider (13) is provided with an opening (131). When the slider (13) moves in an arc along the arc-shaped guide rail (12), the first connecting member (11) can pass through the opening (131).
9. The movable fixture for spinal column specimen according to claim 8, characterized in that: The sliding block (13) and the fixed block (2) are connected via a second connecting member (4).
10. The movable fixture for spinal column specimen according to claim 9, characterized in that: The first connecting member (11) and the second connecting member (4) are both bolts; and / or, The fixing block (2) is a square opening structure for receiving the top end of the spinal specimen; and / or, The arc guide rail (12), the slider (13) and the fixed block (2) are all made of stainless steel. The angle measuring instrument (3) is a magnetic electronic angle measuring instrument and is adsorbed on the outer surface of the fixed block (2).