Spine specimen fixing clamp for in-vitro biomechanical test

Abstract

The utility model discloses a spine specimen fixing clamp for in-vitro biomechanical test, which belongs to the technical field of fixing clamps and comprises a base plate, a plurality of telescopic rods are arranged on the periphery of the base plate, one end of each telescopic rod is arranged in the base plate in a telescopic manner, the other end of each telescopic rod is connected with a hinge component, and the telescopic rods are hinged with clamping jaws through the hinge components. A clamping jaw is arranged on the base plate, a universal joint is installed on one end face, far away from the clamping jaw, of the base plate, the other end of the universal joint is connected with a sliding block, the sliding block is movably arranged on a sliding rail, and a first telescopic rod is arranged on one side, far away from the sliding block, of the sliding rail. Through the cooperation of the universal joint, the sliding block, the sliding rail and the rotating shaft, the spine specimen can move freely, and the movement test of the spine specimen is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fixed clamp, more specifically, relate to a kind of spinal specimen fixed clamp for in-vitro biomechanics test. BACKGROUND

[0002] At present, the specimen of spinal cone is simulated on biomechanics simulation instrument to realize the simulation of in-vitro biomechanics or other experimental requirements, such as forward bending, backward stretching, left and right lateral bending, left and right rotation and mechanical loading simulation, but the specimen of spinal cone is usually fixed using experimental plastic fixative, such as wax or bone cement, and then is sleeved on a fixed mold, and then is placed on a biomechanics testing device for activity test. Since the fixed mold locks the specimen of spinal cone, the specimen of spinal cone cannot move freely, resulting in poor overall test effect. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to provide a kind of spinal specimen fixed clamp for in-vitro biomechanics test, which can fix the specimen of spinal cone and make it move freely, to realize the activity test of spinal specimen.

[0004] According to the first aspect of the utility model, a kind of spinal specimen fixed clamp for in-vitro biomechanics test is provided, including base plate, the outer periphery of the base plate is equipped with several telescopic rods, one end of the telescopic rod is telescopically arranged in the base plate, the other end of the telescopic rod is connected with hinged component, the telescopic rod is hinged with clamping jaw by hinged component, the end face of the base plate away from the clamping jaw is installed with universal joint, the other end of the universal joint is connected with sliding block, the sliding block is movably arranged on slide rail, the side of the slide rail away from the sliding block is equipped with first telescopic rod.

[0005] In a specific embodiment of the utility model, the base plate is provided with a first plane and a second plane, the first plane is provided with a spinal specimen, and the area of the two ends of the spinal specimen is less than the area of the first plane.

[0006] In a specific embodiment of the utility model, the second plane is fixedly connected with one end of the universal joint, the other end of the universal joint is installed with a first rotating shaft, and the other end of the universal joint is connected with the sliding block through the first rotating shaft.

[0007] In a specific embodiment of the utility model, the outer periphery of the base plate is provided with telescopic holes, the telescopic holes are uniformly distributed, and the telescopic rod can move back and forth along the length direction of the telescopic hole.

[0008] In a specific embodiment of this utility model, the hinge assembly includes a first hinge member and a second hinge member. One end of the first hinge member is fixedly connected to the telescopic rod, and the other end of the first hinge member is hinged to one end of the second hinge member. The other end of the second hinge member is hinged to one end of the clamping claw.

[0009] In a specific embodiment of this utility model, the slide rail is provided with a slide groove, and the slider is provided with a protrusion that cooperates with the slide groove.

[0010] In a specific embodiment of this utility model, a miniature cylinder is connected to the end of the telescopic rod away from the hinge assembly, and the miniature cylinder is disposed inside the chassis.

[0011] In a specific embodiment of this utility model, the end of the first telescopic rod away from the slide rail is provided with a thread, and the clamping claw is fitted with an anti-slip sleeve.

[0012] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0013] This invention is installed around a biomechanical simulator. A spinal specimen is placed in the center of the simulator. The fixing clamp is activated, and the specimen is gripped and fixed by the clamping claws through the cooperation of the telescopic rod and the hinge assembly. The specimen can be flexed, extended, laterally flexed, and rotated by the universal joint, slider, slide rail, and rotating shaft. This invention can fix the specimen of the spinal vertebrae while allowing it to move freely, thus enabling the testing of the spinal specimen's movement. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Fig. 1 This is a schematic diagram of a spinal specimen fixation clamp used for in vitro biomechanical testing in one embodiment of the present invention.

[0016] Fig. 2 This is a schematic diagram of the chassis structure in one embodiment of the present invention.

[0017] Fig. 3 This is a schematic diagram of the hinge assembly in one embodiment of the present invention.

[0018] Fig. 4 This is a schematic diagram of the slider in one embodiment of the present invention. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements, an indirect connection, or an interaction between two elements.

[0024] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0025] Reference Figs. 1 to 4As shown, a spinal specimen fixation clamp for in vitro biomechanical testing is provided, including a chassis 1. Several telescopic rods 2 are provided on the outer periphery of the chassis 1. One end of the telescopic rod 2 is telescopically disposed in the chassis 1, and the other end of the telescopic rod 2 is connected to a hinge assembly 3. The telescopic rod 2 is hinged to the clamping claw 4 through the hinge assembly 3. A universal joint 5 is installed on the end face of the chassis 1 away from the clamping claw 4. The other end of the universal joint 5 is connected to a slider 6. The slider 6 is movably disposed on a slide rail 7. A first telescopic rod 8 is provided on the side of the slide rail 7 away from the slider 6.

[0026] In this embodiment, the fixation clamps are installed around the biomechanical simulator, and the spinal specimen is placed in the center of the biomechanical simulator. When the fixation clamps are activated, when force is applied from above, the specimen flexes forward (simulating cervical flexion); when force is applied from below, the specimen flexes backward (simulating cervical extension); when force is applied to the left, the specimen flexes to the left (simulating cervical flexion to the left); when force is applied to the right, the specimen flexes to the right (simulating cervical flexion to the right); when force is applied in the middle, the specimen undergoes vertical compression. By adjusting the hinge assembly 3, the clamping can be adjusted... The claw 4 grips and fixes the spinal specimen. Adjusting the telescopic rod 2 can increase the distance between the gripping claws 4, thereby allowing a larger area of ​​the spinal specimen to be gripped. Rotating the universal joint 5 and moving the slider 6 allows the spinal specimen to move freely. Two fixing clamps fix the upper and lower ends or the left and right ends of the spinal specimen. The other ends are adjusted by two other fixing clamps, using the universal joint 5, slider 6, and the first telescopic rod 8 to allow the spinal specimen to flex forward, extend backward, laterally flex to the left and right, and rotate to the left and right. This can both fix the spinal vertebrae specimen and allow the spinal specimen to move freely, realizing the activity test of the spinal specimen.

[0027] In one embodiment of this utility model, the chassis 1 is provided with a first plane 11 and a second plane 12. A spinal specimen is provided on the first plane 11. The bottom areas at both ends of the spinal specimen are smaller than the area of ​​the first plane 11. Generally, the area of ​​the first plane 11 is 9 times the bottom area of ​​the spinal specimen, so that the spinal specimen can be placed stably and firmly, and the sides can also be clamped and fixed.

[0028] Furthermore, the second plane 12 is fixedly connected to one end of the universal joint 5, and the other end of the universal joint 5 is equipped with a first rotating shaft 51. The other end of the universal joint 5 is connected to the slider 6 through the first rotating shaft 51. The spine specimen in contact with the chassis 1 can be swung by rotating the first rotating shaft 51, allowing it to move freely.

[0029] In one embodiment of this utility model, the outer periphery of the chassis 1 is provided with telescopic holes 13. The telescopic holes 13 are evenly distributed. The telescopic rod 2 can move back and forth along the length direction of the telescopic holes 13, which makes it easier to control the distance between each clamping claw 4 and better grasp and fix the spinal specimen.

[0030] In one embodiment of this utility model, the hinge assembly 3 includes a first hinge member 31 and a second hinge member 32. One end of the first hinge member 31 is fixedly connected to the telescopic rod 2, and the other end of the first hinge member 31 is hinged to one end of the second hinge member 32. The other end of the second hinge member 32 is hinged to one end of the clamping claw 4. An assembly hole is provided on the first hinge member 31, and the assembly hole is fixedly connected to the telescopic rod 2. The first hinge member 31 and the second hinge member 32 are hinged together, so that the second hinge member 32 can rotate to control the clamping claw 4.

[0031] In one embodiment of this utility model, the slide rail 7 is provided with a slide groove 71, and the slider 6 is provided with a protrusion 61 that cooperates with the slide groove 71, so that the slider 6 can move back and forth on the slide rail 7, allowing the spinal specimen to move freely and facilitating the activity test of the spinal specimen.

[0032] In one embodiment of this utility model, a miniature cylinder is connected to the end of the telescopic rod 2 away from the hinge assembly 3. The miniature cylinder is located inside the chassis 1 and controls the extension and retraction length of the telescopic rod 2, which facilitates the activity testing of the spinal specimen.

[0033] In one embodiment of this utility model, the end of the first telescopic rod 8 away from the slide rail 7 is provided with a thread, which facilitates installation on the biomechanical simulator, thereby clamping the spinal specimen during the biomechanical simulation process, making the specimen less prone to movement. The clamping claw 4 is fitted with an anti-slip sleeve to increase the friction force on irregular specimens and prevent the specimen from easily loosening.

[0034] The base 1 of this utility model has several telescopic holes 13. Each telescopic hole 13 is provided with a telescopic rod 2, a hinge assembly 3 and a clamping claw 4. The number of telescopic rods 2, hinge assemblies 3 and clamping claws 4 can be appropriately increased according to the size of the specimen to better clamp the specimen and prevent the specimen from slipping.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A spinal specimen fixation clamp for in vitro biomechanical testing, comprising a base (1), characterized in that, The outer periphery of the chassis (1) is provided with several telescopic rods (2). One end of the telescopic rod (2) is telescopically disposed inside the chassis (1). The other end of the telescopic rod (2) is connected to a hinge assembly (3). The telescopic rod (2) is hinged to the clamping claw (4) through the hinge assembly (3). A universal joint (5) is installed on the end face of the chassis (1) away from the clamping claw (4). The other end of the universal joint (5) is connected to a slider (6). The slider (6) is movably disposed on the slide rail (7). A first telescopic rod (8) is provided on the side of the slide rail (7) away from the slider (6).

2. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 1, characterized in that, The chassis (1) has a first plane (11) and a second plane (12). A spinal specimen is placed on the first plane (11), and the bottom areas at both ends of the spinal specimen are smaller than the area of ​​the first plane (11).

3. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 2, characterized in that, The second plane (12) is fixedly connected to one end of the universal joint (5), and the other end of the universal joint (5) is equipped with a first rotating shaft (51). The other end of the universal joint (5) is connected to the slider (6) through the first rotating shaft (51).

4. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 1, characterized in that, The chassis (1) has telescopic holes (13) on its outer periphery. The telescopic holes (13) are evenly distributed. The telescopic rod (2) can move back and forth along the length direction of the telescopic holes (13).

5. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 1, characterized in that, The hinge assembly (3) includes a first hinge (31) and a second hinge (32). One end of the first hinge (31) is fixedly connected to the telescopic rod (2), and the other end of the first hinge (31) is hinged to one end of the second hinge (32). The other end of the second hinge (32) is hinged to one end of the clamping claw (4).

6. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 1, characterized in that, The slide rail (7) is provided with a slide groove (71), and the slider (6) is provided with a protrusion (61) that cooperates with the slide groove (71).

7. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 1, characterized in that, The telescopic rod (2) is connected to a miniature cylinder at the end away from the hinge assembly (3), and the miniature cylinder is located inside the chassis (1).

8. The spinal specimen fixation clamp for in vitro biomechanical testing according to claim 1, characterized in that, The first telescopic rod (8) has a threaded end away from the slide rail (7), and the clamping claw (4) is fitted with an anti-slip sleeve.

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