Checking fixture for tibia intramedullary nail and use method of checking fixture

Abstract

The invention discloses a detection tool for a tibia intramedullary nail and a using method thereof, and relates to the technical field of intramedullary nail detection.The detection tool comprises a front end assembly and a rear end assembly, the front end assembly comprises a first workbench, and two stacked conveying mechanisms, namely a first conveying mechanism and a second conveying mechanism, are fixedly installed at the top of the first workbench; side plates are symmetrically installed on the two sides of the first conveying mechanism, a shifting cylinder is installed on one side plate through a bearing, the shifting cylinder penetrates through the other side plate and is fixedly connected with the output end of a driving motor, and a first arranging frame is fixedly installed on the rear end area of the first conveying mechanism and comprises a top plate fixedly installed on the first conveying mechanism; a plurality of baffles are evenly and fixedly installed at the bottom of the top plate, the first arrangement frame is divided into a plurality of equal-distance channels through the baffles, intramedullary nails in batches are automatically separated, single intramedullary nail is detected, and compared with manual detection or sampling detection, the detection precision of the intramedullary nail detection device is high.

Description

Technical Field

[0001] The invention relates to the technical field of intramedullary nail detection, in particular to a detection tool for tibial intramedullary nail and a use method thereof. Background Art

[0002] In the field of medical device manufacturing, intramedullary nails are key internal fixation devices for treating fractures. Their quality is directly related to the success rate of surgery, the patient's recovery process, and the long-term quality of life. However, there are many challenges in the production and quality control of intramedullary nails. Traditional quality inspection methods mainly rely on manual sampling and manual inspection, which is not only inefficient, but also greatly affected by human factors, making it difficult to ensure the accuracy and consistency of the test results.

[0003] The quality inspection of intramedullary nails involves multiple key indicators, including dimensional accuracy, material properties, surface finish, assembly accuracy, and biocompatibility. Among them, the sharpness and hardness accuracy of the intramedullary nail head directly affect the stability and fixation effect of the intramedullary nail in the bone marrow cavity. However, the traditional quality inspection method has the following problems: ‌Low testing efficiency‌: Manual sampling and manual testing require a lot of manpower and time, and can only test some products, making it difficult to achieve full inspection and there is a risk of missed inspections.

[0004] The test results are greatly affected by human factors: Manual testing relies on the experience and skills of the testers and is easily affected by human factors such as vision, fatigue, and emotions, resulting in inaccurate and unstable test results. Summary of the invention

[0005] The object of the present invention is to provide a tibial intramedullary nail inspection tool and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a checking fixture for tibial intramedullary nails and a method of using the same, comprising a front end component and a rear end component, the front end component comprising a first workbench, two groups of stacked transport mechanisms are fixedly installed on the top of the first workbench, namely a first transport mechanism stacked on the upper layer and a second transport mechanism stacked on the lower layer, side plates are symmetrically installed on both sides of the first transport mechanism, a dial cylinder is installed on a bearing on one of the side plates, the dial cylinder passes through the other side plate and is fixedly connected to the output end of the driving motor, a drop groove is arranged at the end of the first transport mechanism, the drop groove is aligned with the second transport mechanism, a round bin for storing intramedullary nails is arranged at the front end of the first transport mechanism, the round bin is aligned with the side wall of the first transport mechanism to set a bin opening, a first arranging frame is fixedly installed on the rear end area of ​​the first transport mechanism, the first arranging frame comprises a top plate fixedly installed on the first transport mechanism, a plurality of baffles are evenly fixedly installed on the bottom of the top plate, and the first arranging frame is divided into a plurality of equidistant channels by the baffles.

[0007] According to the above technical solution, several groups of first camera components are evenly arranged on the top of each channel.

[0008] According to the above technical solution, a first slide rail is embedded in one side of the channel, two slide supports are slidably connected on the first slide rail, an electric control rod is bearing-mounted on the side wall of each slide support, a support plate is fixedly mounted on the end of the electric control rod, and a distance measuring sensor is arranged at the end of the support plate.

[0009] According to the above technical solution, a group of marking components is arranged in the rear end area of ​​the top of each channel, and the marking components include a telescopic rod fixedly installed on the top plate, a marking plate fixedly installed at the bottom of the telescopic rod, and a colored marking layer is arranged at the bottom of the marking plate.

[0010] According to the above technical solution, a groove is arranged in the baffle plate toward the front end direction, a second slide rail is installed on the inner wall of the groove, and a push rod is slidably connected to the second slide rail.

[0011] According to the above technical solution, the second arranging frame is detachably mounted on the rear end area of ​​the second transport mechanism, and an intramedullary nail bending detection assembly is arranged in the channel of the second arranging frame. The intramedullary nail bending detection assembly includes a first lifting rod fixedly mounted on the top of the channel in the second arranging frame, a pressure plate is installed on the bottom bearing of the first lifting rod, and a friction layer is arranged at the bottom of the pressure plate.

[0012] According to the above technical solution, a second lifting rod is fixedly installed on the top of the second arrangement frame, the second lifting rod is connected to the support rod, and the end of the support rod is fixedly installed on the top of the first workbench.

[0013] According to the above technical solution, a plurality of pressure sensors are arranged on the support plate, and a layer of rubber pads can be detachably arranged on the outer side surfaces of the pressure sensors.

[0014] According to the above technical solution, second camera assemblies are arranged on both sides of the third transport mechanism, and a sterilization assembly and a lighting assembly are arranged on the top of the third transport mechanism.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing the first arranging rack and the second arranging rack, automatically separates batches of intramedullary nails and detects a single intramedullary nail, and compared with manual detection or sampling detection, the detection accuracy is high, and the same set of detection standards and judgment methods are used for all intramedullary nails, so the comparability of the obtained detection results is high, and a unified quality control standard can be formed; The equipment system cooperates with intelligent structures such as camera components to monitor and trace the intramedullary nails in real time during the production process, promptly discover and correct problems in production, and trace and analyze quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall front three-dimensional structure of the present invention; Figure 2 is a schematic diagram of the three-dimensional structure of the front-end component of the present invention; Figure 3 is a schematic diagram of a second transport mechanism of the present invention; Figure 4 is a schematic diagram of the channel and baffle of the present invention; Figure 5 It is a schematic diagram of the structure of the mandrel of the present invention and a schematic diagram of the intramedullary nail being horizontally placed in front of the arrangement frame; Figure 6 is a schematic diagram of the movement of the intramedullary nail of the present invention after being pushed by the push rod; Figure 7 It is a schematic diagram of the internal structure of the channel of the present invention and a schematic diagram of the state of the support plate before operation; Figure 8 It is a schematic diagram of the state of the support plate of the present invention after operation; Fig. 9 is a schematic diagram of a marking assembly of the present invention; Fig.10 is a schematic diagram of an intramedullary nail bending detection assembly of the present invention; Fig.11 is a schematic diagram of a rubber pad of the present invention; Fig.12 The present invention Figure 7 A schematic diagram of the enlarged structure of the middle A area; In the figure: 1, front end assembly; 2, rear end assembly; 3, first workbench; 4, first transport mechanism; 5, second transport mechanism; 6, round warehouse; 7, warehouse opening; 8, side plate; 9, dial cylinder; 10, drop groove; 11, inclined groove; 12, second workbench; 13, first arrangement frame; 14, top plate; 15, baffle; 16, channel; 17, first slide rail; 18, slide support; 19, electric control rod; 20, support plate; 21, distance measuring sensor; 22, groove; 23, second slide rail; 24, top rod; 25, first camera assembly; 26, marking assembly; 27, telescopic rod; 28, marking plate; 29, second arrangement frame; 30, first lifting rod; 31, support rod; 32. Intramedullary nail bending detection assembly; 33. Pressing plate; 34. Friction layer; 35. Third transport mechanism; 36. Rubber pad; 37. Sterilization assembly; 38. Lighting assembly; 39. Driving motor; 40. Second lifting rod; 41. Second camera assembly. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0018] See also Figure 1-12 , the present invention provides a technical solution: a tibial intramedullary nail inspection tool and a method of using the same, comprising a front-end component 1 and a rear-end component 2, both of which are used for transporting and inspecting intramedullary nails; The front-end assembly 1 includes a first workbench 3, and two sets of stacked transport mechanisms are fixedly installed on the top of the first workbench 3, namely, a first transport mechanism 4 stacked on the upper layer and a second transport mechanism 5 stacked on the lower layer. The structures of the first transport mechanism 4 and the second transport mechanism 5 are consistent, and both are existing technical structures, which will not be described in detail here. By arranging a motor on the fixed support frame, and then using the motor to drive the conveyor belt to run, the intramedullary nail is transported; A round bin 6 for storing intramedullary nails is arranged at the front end of the first transport mechanism 4. The round bin 6 is a prior art structure and will not be described in detail here. A bin opening 7 is arranged on the side wall of the round bin 6 aligned with the first transport mechanism 4. The intramedullary nails are transported from the round bin 6 to the first transport mechanism 4 through the bin opening 7. Side plates 8 are symmetrically installed on both sides of the middle area of ​​the fixed support frame of the first transport mechanism 4, and a cylinder 9 is installed on a bearing on one of the side plates 8. The cylinder 9 passes through another side plate 8 and is fixedly connected to the output end of the driving motor 39. The driving motor 39 can be remotely controlled to operate through the equipment system. The operation of the driving motor 39 drives the cylinder 9 to rotate, and then the intramedullary nails delivered to the first transport mechanism 4 are moved to a horizontal state. After the intramedullary nails are delivered to the first transport mechanism 4 by the round bin 6, they may be in a vertical state with their tips facing upwards. It is necessary to move the tip area to a horizontal horizontal state. The cylinder 9 is set to ensure that all intramedullary nails remain in the same state, which is convenient for later detection; A drop groove 10 is provided at the end of the first transport mechanism 4, and the drop groove 10 is arranged to align with the second transport mechanism 5, so that the intramedullary nail on the first transport mechanism 4 can be transported to the second transport mechanism 5 through the drop groove 10. The height difference between the bottom of the drop groove 10 and the second transport mechanism 5 is small, and only the intramedullary nail in a horizontal state can be allowed to pass through. The setting of the pull cylinder 9 is also to prevent the intramedullary nail from deviating from the drop groove 10 during the movement; An inclined slot 11 is arranged at the end of the second transport mechanism 5, and the second transport mechanism 5 transports the intramedullary nail to the rear end component 2 through the inclined slot 11. The rear end component 2 includes a second workbench 12, and a third transport mechanism 35 is arranged on the second workbench 12. The third transport mechanism 35 is a prior art structure and will not be described in detail here.

[0019] A first arranging frame 13 is fixedly installed on the rear end area of ​​the fixed support frame of the first transport mechanism 4. The first arranging frame 13 includes a top plate 14 fixedly installed on the fixed support frame of the first transport mechanism 4. A plurality of baffles 15 are evenly fixedly installed on the bottom of the top plate 14. The baffles 15 divide the first arranging frame 13 into a plurality of equidistant channels 16 for accommodating the passage of the intramedullary nails. A plurality of first camera assemblies 25 are evenly arranged at the top of each channel 16, and the first camera assemblies 25 monitor the intramedullary nails in the channel 16 in real time; A first slide rail 17 is embedded in one side of the channel 16, and two slide supports 18 are slidably connected on the first slide rail 17. An electric control rod 19 is installed on the side wall of each slide support 18. A support plate 20 is fixedly installed at the end of the electric control rod 19. A distance measuring sensor 21 is set at the end of the support plate 20. When the intramedullary nail enters the channel 16, the equipment system drives the rear end slide support 18 to move to a preset position, and then the equipment system drives the electric control rod 19 to rotate and drive the support plate 20 to rotate 90 degrees, and the intramedullary nail is supported by the support plate 20. The equipment system sets an interval time to ensure that the intramedullary nail is delivered to the preset position. When the interval time is reached, the equipment system first drives the front end The electric control rod 19 rotates to drive the support plate 20 to rotate 90 degrees, and then drives the front sliding support 18 to move along the first slide rail 17 until the front support plate 20 abuts against the intramedullary nail. At this point, the two support plates 20 clamp the intramedullary nail. Finally, the length of the intramedullary nail is detected by the distance measuring sensors 21 on the two support plates 20. If the length of the intramedullary nail is not enough, it will affect the use effect of the nail and it will be judged as an unqualified intramedullary nail. The clamping of the intramedullary nail by the two support plates 20 also detects the hardness of the intramedullary nail. The first camera assembly 25 monitors the bending degree of the intramedullary nail in real time. If an unqualified intramedullary nail is detected, the intramedullary nail is marked. A group of marking components 26 are arranged at the rear end area of ​​the top of each channel 16. The marking components 26 include a telescopic rod 27 fixedly mounted on the top plate 14. A marking plate 28 is fixedly mounted at the bottom of the telescopic rod 27. A marking layer printed with color is arranged at the bottom of the marking plate 28. When the equipment system detects an unqualified intramedullary nail, the telescopic rod 27 is driven to descend, and then the marking plate 28 is driven to descend, and the intramedullary nail is marked by the marking layer. The marking components 26 arranged at the rear end area do not affect the work of the first camera assembly 25. A groove 22 is arranged in the baffle 15 toward the front end, a second slide rail 23 is installed on the inner wall of the groove 22, a push rod 24 is slidably connected to the second slide rail 23, a rubber head is arranged at the end of the push rod 24, and the push rod 24 is electrically connected to the external driving mechanism. The equipment system drives the push rod 24 to extend according to a preset frequency, and when extending, it extends in sequence from left to right, and only one push rod is extended each time, and its function is to push the intramedullary nails placed horizontally at the front end of the first arrangement frame 13 to a position relatively horizontal with the channel 16, so that the intramedullary nails can enter the channel 16, and the equipment system controls the round bin 6 to intermittently transport the intramedullary nails, giving the intramedullary nails on the first transport mechanism 4 time to enter the channel 16; A second arrangement frame 29 can be detachably mounted on the rear end area of ​​the fixed support frame of the second transport mechanism 5. The second arrangement frame 29 has the same frame structure as the first arrangement frame 13, except that the structure in the channel 16 is different. An intramedullary nail bending detection component 32 is arranged in the channel 16 of the second arrangement frame 29. The intramedullary nail bending detection component 32 includes a first lifting rod 30 fixedly mounted on the top of the channel 16 in the second arrangement frame 29, a bearing-mounted pressure plate 33 at the bottom of the first lifting rod 30, and a friction layer 34 is arranged at the bottom of the pressure plate 33. After the intramedullary nail entering the channel 16 of the second arrangement frame 29 is clamped and fixed, the equipment system The first lifting rod 30 is driven to descend, and then the pressing plate 33 is driven to descend. As the pressing plate 33 descends, the pressing plate 33 is in flat contact with the surface of the intramedullary nail. The pressing plate 33 is lowered to apply pressure to the intramedullary nail for detection. After the detection is completed, the first camera assembly 25 arranged in the channel 16 of the second arrangement frame 29 monitors the intramedullary nail to obtain real-time data of the intramedullary nail. Similarly, the marking assembly 26 arranged in the channel 16 of the second arrangement frame 29 marks unqualified intramedullary nails. The difference is that the marking colors of the marking assembly 26 in the first arrangement frame 13 and the second arrangement frame 29 are different, which is convenient for distinguishing the reasons for the unqualified intramedullary nails. A second lifting rod 40 is fixedly installed on the top of the second arrangement frame 29, and the second lifting rod 40 is connected to the support rod 31. The end of the support rod 31 is fixedly installed on the top of the first workbench 3. There is no fixed connection structure between the second arrangement frame 29 and the rear end area of ​​the second transport mechanism 5 fixed support frame. When it is necessary to detect the intramedullary nail through the second arrangement frame 29, the equipment system moves the second arrangement frame 29 to a preset detection position by lowering the second lifting rod 40. The number of detection items can be controlled according to the detection requirements of the intramedullary nail, so as to achieve the purpose of efficient detection and avoid unnecessary detection. A plurality of pressure sensors are arranged on the facing surfaces of the support plates 20 in the same channel 16 in the first arrangement frame 13 and the second arrangement frame 29, and a layer of rubber pads 36 is detachably arranged on the outer surfaces of the pressure sensors. When the intramedullary nail is clamped and tested, the two support plates 20 move toward each other to apply pressure to the intramedullary nail. If the nail head of the intramedullary nail cannot penetrate the rubber pad 36 to press against the pressure sensor, it is determined that the sharpness of the nail head of the intramedullary nail is unqualified, and its penetration force during use cannot be ensured. Moreover, the sharpness of the nail head is unqualified and cannot be modified by secondary processing. The equipment system issues an alarm and the nail is directly taken out manually. The first arranging frame 13 and the second arranging frame 29 automatically separate batches of intramedullary nails and detect a single intramedullary nail. Compared with manual detection or sampling detection, the detection accuracy is high. The same set of detection standards and judgment methods are used for all intramedullary nails, so the comparability of the obtained detection results is high, and a unified quality control standard can be formed; The equipment system cooperates with intelligent structures such as camera components to monitor and trace the intramedullary nails in real time during the production process, timely discover and correct problems in production, and can also trace and analyze quality problems; A second camera assembly 41 is disposed on both sides of the third transport mechanism 35. The second camera assembly 41 is used to detect the number and color of the marked intramedullary nails, which are recorded and analyzed in the equipment system to obtain the qualified rate of this batch of intramedullary nails. A sterilization component 37 and a lighting component 38 are set on the top of the third transport mechanism 35. The function of the sterilization component 37 is to sterilize the intramedullary nail during its movement. The function of the lighting component 38 is to increase the illumination of the intramedullary nail moving on the third transport mechanism 35 to avoid inaccurate detection data of the second camera component 41 due to poor light intensity.

[0020] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tibial intramedullary nail inspection tool, comprising a front end component (1) and a rear end component (2), characterized in that: The front-end assembly (1) comprises a first workbench (3), the top of which is fixedly mounted two sets of stacked transport mechanisms, namely a first transport mechanism (4) stacked on an upper layer and a second transport mechanism (5) stacked on a lower layer, side panels (8) being symmetrically mounted on both sides of the first transport mechanism (4), a cylinder (9) being mounted on a bearing on one of the side panels (8), the cylinder (9) passing through the other side panel (8) and being fixedly connected to the output end of a drive motor (39), a slot (10) being arranged at the end of the first transport mechanism (4), the slot (10) being aligned with the second transport mechanism (5) and the bearing of the cylinder (9) being arranged on the bearing of the second transport mechanism (5). The first transport mechanism (5) is provided with a round bin (6) for storing intramedullary nails at the front end of the first transport mechanism (4), a bin opening (7) is arranged on the side wall of the round bin (6) aligned with the first transport mechanism (4), a first arrangement frame (13) is fixedly installed on the rear end area of ​​the first transport mechanism (4), the first arrangement frame (13) comprises a top plate (14) fixedly installed on the first transport mechanism (4), a plurality of baffles (15) are evenly fixedly installed on the bottom of the top plate (14), and the first arrangement frame (13) is divided into a plurality of equidistant channels (16) by the baffles (15).

2. A tibial intramedullary nail inspection tool according to claim 1, characterized in that: A plurality of groups of first camera assemblies (25) are evenly arranged on the top of each channel (16).

3. A tibial intramedullary nail inspection tool according to claim 2, characterized in that: A first slide rail (17) is embedded in one side of the channel (16), two slide supports (18) are slidably connected to the first slide rail (17), an electric control rod (19) is bearing-mounted on the side wall of each slide support (18), a support plate (20) is fixedly mounted on the end of the electric control rod (19), and a distance measuring sensor (21) is arranged at the end of the support plate (20).

4. A tibial intramedullary nail inspection tool according to claim 3, characterized in that: A group of marking components (26) is provided at the rear end area of ​​the top of each channel (16), the marking component (26) comprising a telescopic rod (27) fixedly mounted on the top plate (14), a marking plate (28) fixedly mounted at the bottom of the telescopic rod (27), and a marking layer printed with a color is provided at the bottom of the marking plate (28).

5. A tibial intramedullary nail inspection tool according to claim 4, characterized in that: A groove (22) is arranged in the baffle (15) towards the front end direction, a second slide rail (23) is installed on the inner wall of the groove (22), and a push rod (24) is slidably connected to the second slide rail (23).

6. A tibial intramedullary nail inspection tool according to claim 5, characterized in that: A second arranging frame (29) is detachably mounted on the rear end region of the second transport mechanism (5); an intramedullary nail bending detection assembly (32) is arranged in the channel (16) of the second arranging frame (29); the intramedullary nail bending detection assembly (32) comprises a first lifting rod (30) fixedly mounted on the top of the channel (16) in the second arranging frame (29); a bearing-mounted pressure plate (33) at the bottom of the first lifting rod (30); and a friction layer (34) is arranged at the bottom of the pressure plate (33).

7. A tibial intramedullary nail inspection tool according to claim 6, characterized in that: A second lifting rod (40) is fixedly mounted on the top of the second arrangement frame (29); the second lifting rod (40) is connected to a support rod (31); and the end of the support rod (31) is fixedly mounted on the top of the first workbench (3).

8. A tibial intramedullary nail inspection tool according to claim 7, characterized in that: A plurality of pressure sensors are arranged on the support plate (20), and a layer of rubber pads (36) is detachably arranged on the outer sides of the pressure sensors.

9. A tibial intramedullary nail inspection tool according to claim 8, characterized in that: The rear-end component (2) comprises a second workbench (12), a third transport mechanism (35) is arranged on the second workbench (12), second camera components (41) are arranged on both sides of the third transport mechanism (35), and a sterilization component (37) and a lighting component (38) are arranged on the top of the third transport mechanism (35).

10. The method for using a tibial intramedullary nail inspection tool according to claim 9, characterized in that: Step 1, confirm that the intramedullary nail has entered the channel (16); Step 2: the equipment system drives the sliding support (18) at the rear end to move to a preset position; Step 3: The equipment system drives the electric control rod (19) to rotate, causing the support plate (20) to rotate (90) degrees; Step 4, supporting the intramedullary nail with the support plate (20); Step 5, detecting the length of the intramedullary nail using the distance measuring sensors (21) on the two support plates (20); Step six, the two support plates (20) clamp the intramedullary nail to test the hardness of the intramedullary nail; Step seven: the first camera assembly (25) monitors the bending degree of the intramedullary nail in real time, and if an unqualified intramedullary nail is detected, the intramedullary nail is marked.

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