A detection device for testing the restoring force of a pressurized fixer

Abstract

The present invention relates to the technical field of performance detection of pressurized fixtures, and specifically discloses a detection device for testing the restoring force of pressurized fixtures, including a ball linear guide, the ball linear guide including a guide body, two sliders are installed on the top of the guide body through steel ball sliding; a support block, the support block is fixedly installed on the top of the guide body; a tension sensor, the tension sensor is installed on the side of the support block close to the slider, and the bottom end of the tension sensor is higher than the top of the slider; a first limit box, the first limit box is fixedly installed on the top of the slider close to the support block, the first limit box includes a first limit block, and the first limit block is set in an inverted T shape. The present invention has the function of detecting the restoring force of pressurized fixtures of different specifications, improves the adjustment efficiency and accuracy of the distance between the force measuring components, and improves the restoring force detection accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of performance detection of a pressurized fixer, and in particular to a detection device for testing the restoring force of a pressurized fixer. Background Art

[0002] Medical compression fixators are orthopedic internal fixation devices used in the medical field. They are mainly used to apply pressure to fix the fracture ends at fractures, surgical incisions, etc. to promote healing and reduce complications. According to different clinical needs and application scenarios, after the production of the compression fixator, it is generally necessary to sample and test the restoring force to evaluate the performance of the medical compression fixator during use to ensure that it can provide stable pressure to promote the healing of the fracture ends.

[0003] With the development of implantable devices in the medical field, pressurized fixators made of memory alloys have been promoted and applied in orthopedic clinics. Pressurized fixators use the restoring force generated by the deformation of memory alloys at a certain temperature to reposition the fracture site. Therefore, the detection of the size of this restoring force becomes particularly important, which is related to the selection of clinical pressurized fixators and the formulation of product factory standards. Due to the unique shape of the pressurized fixator, the existing detection method only uses two relatively moving force measuring components for relative traction, and cooperates with a tension sensor to read the value. The test results have a large number of human factors, the data fluctuations are large and discrete, the test data has low credibility, and the test accuracy is poor. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a detection device for testing the restoring force of a pressurized fixer, which can solve the problems raised in the above background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A detection device for testing the restoring force of a pressurized fixer, comprising:

[0007] A ball linear guide, the ball linear guide comprising a guide body, the top of which has two sliders mounted on it through steel balls;

[0008] A support block, wherein the support block is fixedly mounted on the top end of the guide rail body;

[0009] A tension sensor, wherein the tension sensor is installed on a side of the support block close to the slider, and the bottom end of the tension sensor is higher than the top end of the slider;

[0010] A first limit box, the first limit box is fixedly installed at the top of the slider near the support block, the first limit box includes a first limit block, the first limit block is arranged in an inverted T-shape, a first placement hole for placing a pressurized fixture that generates a recoverable deformation under a low temperature state is arranged at the top of the vertical section of the first limit block, and a clamping structure is arranged between the first limit box and the tension sensor;

[0011] A second limit box, the second limit box is fixedly installed at the top of the slider away from the support block, the second limit box includes a second limit block, the second limit block is arranged in an inverted T shape, and the top of the vertical section of the second limit block is provided with a second placement hole for placing a pressurized fixture that has been deformed to be recoverable under a low temperature state;

[0012] A limiting rod, the limiting rod being installed on a side of the second limiting box close to the supporting block;

[0013] A micrometer head body, the micrometer head body is installed through the side wall of the support block, and the micrometer head body is used to push the limit rod;

[0014] The positioning block is matched with the pressurized fixture and is used to assist in adjusting the distance between the first limiting box and the second limiting box to match the pressurized fixture after being placed in a low temperature state and generating a recoverable deformation.

[0015] Preferably, the tension sensor comprises a sensor body, one end of the sensor body close to the support block is threadedly connected with a first fixing screw, and the first fixing screw is threadedly connected to the support block.

[0016] Preferably, a first horizontal positioning groove is arranged at the top of the first limiting block, the first horizontal positioning groove is communicated with the first placement hole, and the first horizontal positioning groove matches the pressurized fixer.

[0017] Preferably, the clamping structure includes a second fixing screw, which is threadedly connected to an end of the sensor body away from the support block, and a first T-slot is provided at the top of the first limit block, and the first T-slot is located between the first placement hole and the support block, and the second fixing screw matches the first T-slot.

[0018] Preferably, first screws are respectively provided at the top ends of the two horizontal sections of the first limit block, and the first screws are threadedly connected to the adjacent sliding blocks.

[0019] Preferably, a second horizontal positioning groove is arranged at the top end of the second limiting block, the second horizontal positioning groove is arranged in communication with the second placement hole, and the second horizontal positioning groove matches the pressurized fixer.

[0020] Preferably, the inner walls of the first limiting box and the second limiting box facing each other are both provided with vertical positioning grooves, and the second horizontal positioning groove and the first horizontal positioning groove are respectively connected with the adjacent vertical positioning grooves.

[0021] Preferably, second screws are provided through the top ends of the two horizontal sections of the second limit block, and the second screws are threadedly connected to the adjacent sliding blocks.

[0022] Preferably, a block is arranged between a horizontal section and a vertical section of the second limit box, a threaded body is arranged at one end of the limit rod close to the second limit box, and the limit rod is threadably connected to the block via the threaded body.

[0023] Preferably, the micrometer head body includes a threaded sleeve, the threaded sleeve is penetrated and threadedly connected to the support block, the threaded sleeve is slidably sleeved with a spherical micrometer head, the inner wall of the threaded sleeve is threadedly connected with a micrometer screw, the micrometer screw and the limit rod are coaxially arranged, and the end of the micrometer screw away from the limit rod is fixedly connected to the spherical micrometer head.

[0024] The beneficial effects of the present invention are:

[0025] 1. By setting a ball linear guide, the beneficial effect that can be obtained is that the ball linear guide includes a guide body, two sliders are installed on the top of the guide body through steel ball sliding, a support block is fixedly installed on the top of the guide body, a tension sensor is installed on the side of the support block close to the slider, the bottom end of the tension sensor is higher than the top of the slider, a first limit box is fixedly installed on the top of the slider close to the support block, the first limit box includes a first limit block, the first limit block is in an inverted T-shaped arrangement, a first placement hole for placing a pressurized fixture that is recoverable after deformation under low temperature conditions is arranged at the top of the vertical section of the first limit block, a clamping structure is arranged between the first limit box and the tension sensor, a second limit box is fixedly installed on the top of the slider away from the support block, the second limit box includes a second limit block, the second limit block is in an inverted T-shaped arrangement, and a second placement hole for placing a pressurized fixture that is recoverable after deformation under low temperature conditions is arranged at the top of the vertical section of the second limit block;

[0026] According to the model and size of the pressurized fixture to be tested, a matching positioning block is placed between the first limit box and the second limit box, and a ball linear guide is used. When the positioning block slides off from between the first limit box and the second limit box, the pressurized fixture that has been recoverably deformed under low temperature conditions is inserted between the first placement hole and the second placement hole, wherein the low temperature state is 0-5°C. The pressurized fixture that has been recoverably deformed is placed between the first limit box and the second limit box under the adjustment of 45°C. The pressurized fixture applies force to the first limit box and the second limit box, and the tension sensor cooperates with the support block to detect the tension received by the first limit box, and cooperates with the tension tester to detect the restoring force of the pressurized fixture, thereby having the function of detecting the restoring force of pressurized fixtures of different specifications.

[0027] 2. By setting the micrometer head body and the limit rod, the beneficial effect that can be obtained is that the limit rod is installed on the side of the second limit box close to the support block, the micrometer head body is installed through the side wall of the support block, and is used to push the limit rod. The positioning block matches the pressurized fixture, and is used to assist in adjusting the distance between the first limit box and the second limit box to match the pressurized fixture after the restorable deformation is generated under low temperature conditions;

[0028] Then rotate the spherical micrometer head, the micrometer screw rotates synchronously, and pushes the limit rod, driving the second limit box to slide on the guide rail body in cooperation with the slider below, until the positioning block slides off from between the first limit box and the second limit box, thereby improving the adjustment efficiency and accuracy of the distance between the force measuring components.

[0029] 3. By setting the first limit box and the micrometer head body, the beneficial effect that can be obtained is that the first limit box is fixedly installed on the top of the slider near the support block, the first limit box includes a first limit block, the first limit block is in an inverted T-shaped arrangement, the top of the vertical section of the first limit block is provided with a first placement hole for placing a pressurized fixture that has been deformed and can be restored under a low temperature state, the top of the first limit block is provided with a first horizontal positioning groove, the first horizontal positioning groove is connected to the first placement hole, the first horizontal positioning groove matches the pressurized fixture, and a clamping structure is provided between the first limit box and the tension sensor, and the clamping structure includes a first fixing screw;

[0030] When it is necessary to accurately detect the restoring force of the pressurized fixture, after removing the pressurized fixture from between the first limit box and the second limit box, rotate the main body of the differential head to separate it from the limit rod. The remainder on the tension sensor is the damping amount. In conjunction with the tension tester, the restoring force after removing the damping amount is calculated, thereby improving the restoring force detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0032] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a top view of the present invention;

[0034] Figure 3 The figure is a diagram of the installation structure of the ball linear guide in the present invention;

[0035] Figure 4 An exploded view of the tension sensor and the first limit box in the present invention;

[0036] Figure 5 This is a diagram of the installation structure of the limit rod in the present invention;

[0037] Figure 6 The figure is a structural diagram of the installation of the micrometer head main body in the present invention;

[0038] Figure 7 This is a diagram of the installation structure of the first limit block in the present invention.

[0039] Description of reference numerals:

[0040] In the figure: 1. ball linear guide; 11. guide rail body; 12. slider; 2. support block; 3. tension sensor; 31. sensor body; 32. first fixing screw; 33. second fixing screw; 4. first limit box; 41. first limit block; 42. first placement hole; 43. first horizontal positioning groove; 44. first T-slot; 45. first screw; 46. vertical positioning groove; 5. second limit box; 51. second limit block; 52. second placement hole; 53. second horizontal positioning groove; 54. second T-slot; 55. second screw; 56. block; 6. limit rod; 61. threaded body; 7. differential head body; 71. threaded sleeve; 72. spherical differential head; 73. micrometer screw; 8. positioning block. DETAILED DESCRIPTION

[0041] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside", "outside", etc. is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0043] Reference Figure 1-Figure 7 , a detection device for testing the restoring force of a pressurized fixture disclosed in the present invention, includes a ball linear guide 1, the ball linear guide 1 includes a guide body 11, and two sliders 12 are installed on the top of the guide body 11 through steel ball sliding.

[0044] The support block 2 is fixedly mounted on the top of the guide rail body 11 .

[0045] The tension sensor 3 is installed on the side of the support block 2 close to the slider 12. The bottom end of the tension sensor 3 is higher than the top end of the slider 12. The tension sensor 3 includes a sensor body 31. One end of the sensor body 31 close to the support block 2 is threadedly connected with a first fixing screw 32. The first fixing screw 32 is threadedly connected to the support block 2.

[0046] The first limit box 4 is fixedly installed on the top of the slider 12 close to the support block 2. The first limit box 4 includes a first limit block 41. The first limit block 41 is set in an inverted T shape. The top of the vertical section of the first limit block 41 is provided with a first placement hole 42 for placing a pressurized fixture that can be restored after deformation under low temperature conditions. The top of the first limit block 41 is provided with a first horizontal positioning groove 43. The first horizontal positioning groove 43 is connected to the first placement hole 42. The first horizontal positioning groove 43 matches the pressurized fixture. A clamping structure is provided between a limit box 4 and the tension sensor 3, and the clamping structure includes a first fixing screw 32, and the first fixing screw 32 is threadedly connected to an end of the sensor body 31 away from the support block 2, and a first T-slot 44 is provided at the top of the first limit block 41, and the first T-slot 44 is located between the first placement hole 42 and the support block 2, and the second fixing screw 33 matches the first T-slot 44, and first screws 45 are respectively provided at the tops of the two horizontal sections of the first limit block 41, and the first screws 45 are threadedly connected to the adjacent slider 12;

[0047] The second limit box 5 is fixedly installed at the top of the slider 12 away from the support block 2. The second limit box 5 includes a second limit block 51. The second limit block 51 is set in an inverted T shape. The top of the vertical section of the second limit block 51 is provided with a second placement hole 52 for placing a pressurized fixture that can be restored after deformation under low temperature conditions. The top of the second limit block 51 is provided with a second horizontal positioning groove 53. The second horizontal positioning groove 53 is connected to the second placement hole 52. The second horizontal positioning groove 53 is connected to the pressurized fixture. The second limit block 51 is matched with the pressure fixer, and a second T-slot 54 is provided at the bottom end of the second limit block 51. The second T-slot 54 is located on the side of the second placement hole 52 away from the support block 2. The tops of the two horizontal sections of the second limit block 51 are penetrated by second screws 55, and the second screws 55 are threadedly connected with the adjacent slider 12. The inner walls of the first limit box 4 and the second limit box 5 facing each other are provided with vertical positioning grooves 46, and the second horizontal positioning grooves 53 and the first horizontal positioning grooves 43 are respectively connected with the adjacent vertical positioning grooves 46.

[0048] The limiting rod 6 is installed on one side of the second limiting box 5 close to the supporting block 2. A block 56 is arranged between a horizontal section and a vertical section of the second limiting box 5. A threaded body 61 is arranged at one end of the limiting rod 6 close to the second limiting box 5. The limiting rod 6 is threadedly connected to the block 56 through the threaded body 61.

[0049] The differential head body 7 is installed through the side wall of the support block 2. The differential head body 7 is used to push the limit rod 6. The differential head body 7 includes a threaded sleeve 71. The threaded sleeve 71 is penetrated and threadedly connected with the support block 2. The threaded sleeve 71 is slidably sleeved with a spherical differential head 72. The inner wall of the threaded sleeve 71 is threadedly connected with a micrometer screw 73. The micrometer screw 73 is coaxially arranged with the limit rod 6, and the end of the micrometer screw 73 away from the limit rod 6 is fixedly connected to the spherical differential head 72.

[0050] The positioning block 8 is matched with the pressurized fixture and is used to assist in adjusting the distance between the first limiting box 4 and the second limiting box 5 to match the pressurized fixture after being placed in a low temperature state and generating a recoverable deformation.

[0051] The working principle and use process of the present invention are as follows: first, according to the model and size of the pressurized fixture to be tested, the matching positioning block 8 is placed between the first limit box 4 and the second limit box 5, then the spherical micrometer head 72 is rotated, the micrometer screw 73 is rotated synchronously, and the limit rod 6 is pushed to drive the second limit box 5 to slide on the guide rail body 11 in cooperation with the slider 12 below. When the positioning block 8 slides off from between the first limit box 4 and the second limit box 5, the pressurized fixture that has been deformed reversibly in the low temperature state is inserted between the first placement hole 42 and the second placement hole 52, wherein the low temperature state is 0-5°C, and the reversible deformation is generated. The deformed pressurized fixture is placed between the first limit box 4 and the second limit box 5 under the adjustment of 45°. The pressurized fixture applies force to the first limit box 4 and the second limit box 5. The tension sensor 3 cooperates with the support block 2 to detect the tension received by the first limit box 4, and cooperates with the tension tester to detect the restoring force of the pressurized fixture. When it is necessary to accurately detect the restoring force of the pressurized fixture, after removing the pressurized fixture from between the first limit box 4 and the second limit box 5, rotate the differential head body 7 to separate it from the limit rod 6. The remainder on the tension sensor 3 is the damping amount. Cooperate with the tension tester to calculate the restoring force after removing the damping amount.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A detection device for testing the restoring force of a pressurized fixer, characterized in that: include: A ball linear guide (1), the ball linear guide (1) comprising a guide body (11), the top of the guide body (11) being slidably mounted with two slide blocks (12) via steel balls; A support block (2), wherein the support block (2) is fixedly mounted on the top end of the guide rail body (11); A tension sensor (3), the tension sensor (3) being mounted on a side of the support block (2) close to the slider (12), the bottom end of the tension sensor (3) being higher than the top end of the slider (12); a first limit box (4), the first limit box (4) being fixedly mounted on the top of the slider (12) close to the support block (2), the first limit box (4) comprising a first limit block (41), the first limit block (41) being arranged in an inverted T-shape, a first placement hole (42) for placing a pressurized fixture that has been deformed to be recoverable under low temperature conditions being arranged at the top of the vertical section of the first limit block (41), and a clamping structure being arranged between the first limit box (4) and the tension sensor (3); a second limiting box (5), the second limiting box (5) being fixedly mounted on a top end of the sliding block (12) away from the supporting block (2), the second limiting box (5) comprising a second limiting block (51), the second limiting block (51) being arranged in an inverted T-shape, the top end of the vertical section of the second limiting block (51) being provided with a second placement hole (52) for placing a pressurized fixture that has undergone a recoverable deformation under a low temperature state; A limiting rod (6), the limiting rod (6) being mounted on a side of the second limiting box (5) close to the supporting block (2); A micrometer head body (7), the micrometer head body (7) being installed through the side wall of the support block (2), and the micrometer head body (7) being used to push the limit rod (6); A positioning block (8), the positioning block (8) matches the pressurized fixture and is placed between the first limiting box and the second limiting box to assist in adjusting the spacing between the first limiting box (4) and the second limiting box (5) to match the pressurized fixture after being placed in a low temperature state and generating a recoverable deformation.

2. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: The tension sensor (3) comprises a sensor body (31), one end of the sensor body (31) close to the support block (2) being threadedly connected to a first fixing screw (32), and the first fixing screw (32) is threadedly connected to the support block (2).

3. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: A first horizontal positioning groove (43) is provided at the top end of the first limiting block (41); the first horizontal positioning groove (43) is communicated with the first placement hole (42); and the first horizontal positioning groove (43) matches the pressurized fixer.

4. A detection device for testing the restoring force of a pressurized fixer according to claim 2, characterized in that: The clamping structure comprises a second fixing screw (33), the second fixing screw (33) being threadedly connected to an end of the sensor body (31) away from the support block (2), a first T-slot (44) being provided at the top end of the first limiting block (41), the first T-slot (44) being located between the first placement hole (42) and the support block (2), and the second fixing screw (33) matching the first T-slot (44).

5. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: The top ends of the two horizontal sections of the first limit block (41) are respectively provided with first screws (45), and the first screws (45) are threadedly connected to the adjacent sliding blocks (12).

6. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: A second horizontal positioning groove (53) is provided at the top end of the second limiting block (51), the second horizontal positioning groove (53) is communicated with the second placement hole (52), and the second horizontal positioning groove (53) matches the pressurized fixer.

7. A detection device for testing the restoring force of a pressurized fixer according to claim 6, characterized in that: The inner walls of the first limiting box (4) and the second limiting box (5) facing each other are both provided with vertical positioning grooves (46), and the second horizontal positioning groove (53) and the first horizontal positioning groove (43) are respectively connected to the adjacent vertical positioning grooves (46).

8. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: Second screws (55) are provided through the top ends of the two horizontal sections of the second limit block (51), and the second screws (55) are threadedly connected to the adjacent sliding blocks (12).

9. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: A block (56) is provided between a horizontal section and a vertical section of the second limit box (5); a threaded body (61) is provided at one end of the limit rod (6) close to the second limit box (5); and the limit rod (6) is threadedly connected to the block (56) via the threaded body (61).

10. A detection device for testing the restoring force of a pressurized fixer according to claim 1, characterized in that: The micrometer head body (7) comprises a threaded sleeve (71), the threaded sleeve (71) and the support block (2) are penetrated and threadedly connected, the threaded sleeve (71) is slidably sleeved with a spherical micrometer head (72), the inner wall of the threaded sleeve (71) is threadedly connected with a micrometer screw (73), the micrometer screw (73) and the limit rod (6) are coaxially arranged, and the end of the micrometer screw (73) away from the limit rod (6) is fixedly connected to the spherical micrometer head (72).

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