Orthopedic cut-off knife sharp degree detector

Abstract

The invention belongs to the technical field of orthopaedic sharpness air pressure testing devices, and particularly relates to an orthopaedic cut-off knife sharpness detector which comprises a base, an impact mechanism is arranged above the base, and the impact mechanism comprises a rotating block arranged at the top of the base. A lifting groove is formed between the two sides of the rotating block, a pneumatic impactor body is fixedly connected to the outer wall of the top of the lifting groove, and an impact column is slidably connected to the bottom of the pneumatic impactor body. Through the arranged moving box, a pneumatic impactor body drives a cut-off knife body to impact an artificial bone body through air pressure, meanwhile, the air pressure of the pneumatic impactor body is controlled, the sharpness and durability of the cut-off knife body under different pressures are tested, the cut-off knife body is comprehensively tested through the device, and the test efficiency is improved. Therefore, tipping and curling of cut-off knife bodies produced in batches under high pressure due to too sharp cutting edges are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic sharpness air pressure testing devices, in particular to an orthopedic scissor sharpness detector. Background Art

[0002] The sharpness test of orthopedic amputees is directly related to their safety and effectiveness in clinical use. The testing process requires strict control of variables to ensure that the results are scientific and repeatable.

[0003] When testing the sharpness of an orthopedic cutter made of new materials, aim the cutter at the bone and hit the bone with a certain force so that the cutter cuts the bone. Then check the condition of the cutting edge of the cutter and the condition of the bone cross section to evaluate the sharpness and service life of the cutter.

[0004] However, due to testing omissions, the device may not be able to simulate the working force of the cutting knife, affecting the accuracy of the device's detection. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes an orthopedic truncation knife sharpness detector.

[0006] The present invention proposes an orthopedic cutting knife sharpness tester, which includes a base, an impact mechanism is provided above the base, the impact mechanism includes a rotating block arranged on the top of the base, a lifting groove is provided between the two sides of the rotating block, the top outer wall of the lifting groove is fixedly connected with a pneumatic impactor body, the bottom of the pneumatic impactor body is slidably connected with an impact column, the bottom of the impact column is fixedly connected with a lifting block located inside the lifting groove, one side of the lifting block is slidably connected to one inner wall of the lifting groove, one fixed end of the bottom of the lifting block is fixedly connected to a moving box, an opening is provided between the bottom outer wall of the moving box and the top of the lifting block, the cutting knife body is provided on the inner wall of the circumferential side of the opening, the bottom of the cutting knife body extends to the bottom of the moving box, and an artificial bone body aligned with the cutting knife body is provided above the base.

[0007] Preferably, a screw rod 1 is rotatably connected between the outer walls on both sides of the moving box, and the circumferential side of the screw rod 1 is provided with two sections of threads with opposite rotation directions. A limiting column is fixedly connected between the outer walls on both sides of the moving box, and the circumferential side of the screw rod 1 is threadedly connected to at least two moving blocks located inside the moving box, and the bottom of the moving block is slidably connected to the bottom inner wall of the moving box.

[0008] Preferably, the inner side of the moving block is slidably connected to the circumferential side of the limiting column, and the side of the moving block is provided with a groove aligned with the cutting knife body, the diameter of the groove is larger than the diameter of the opening, and the inner wall of the circumferential side of the groove is evenly fixedly connected with an extrusion strip aligned with the cutting knife body.

[0009] Preferably, the side of the rotating block is fixedly connected to a connecting ring, the circumferential side of the connecting ring is rotatably connected to a support frame, the side bottom of the support frame is fixedly connected to the side top of the base, and a movable groove is opened on the side of the base.

[0010] Preferably, a motor is fixedly connected to an outer wall of one side of the movable groove, the output shaft of the motor is fixedly connected to screw rod 2, the other end of screw rod 2 is rotatably connected to the inside of one side of the movable groove, and the circumferential side surface of screw rod 2 is threadedly connected to a movable block aligned with the rotating block.

[0011] Preferably, the bottom of the movable block is slidably connected to the bottom inner wall of the movable groove, the bottom side of the rotating block is fixedly connected with at least two rotating columns aligned with the movable block, the top of the movable block is fixedly connected with a fixed column located between the two rotating columns, and the top of the fixed column is fixedly connected with a limit plate located above the rotating column.

[0012] Preferably, both sides of the base are fixedly connected with side blocks aligned with the artificial bone body, the top of the side block is provided with a groove aligned with the artificial bone body, both ends of the circumferential side of the artificial bone body extend to the inside of the groove, the inside of the side block is provided with a transmission groove connected to the groove, a rotating shaft aligned with the groove is rotatably connected between the inner walls of the two sides of the transmission groove, the circumferential side of the rotating shaft is fixedly connected with a rotating plate, the top of the rotating plate is against the top inner wall of the transmission groove, and the sides of the rotating plate are evenly fixedly connected with soft blocks.

[0013] Preferably, a lifting frame is slidably connected between the inner walls on both sides of the transmission groove, the top of the side of the lifting frame is meshedly connected to the circumferential side of the rotating shaft, the top inner wall of the transmission groove is fixedly connected to a top column, the bottom of the top column extends to the bottom of the lifting frame, and a spring surrounding the top column is fixedly connected between the top of the lifting frame and the top inner wall of the transmission groove.

[0014] Preferably, an extrusion groove connected to the transmission groove is opened inside the side block, and a screw rod three passing through the inside of the extrusion groove is slidably connected between one side of the two side blocks, and the circumferential side surface of the screw rod three is threadedly connected to the inside of the base, and an extrusion block surrounding the screw rod three is rotatably connected between the two inner walls of the extrusion groove.

[0015] Preferably, the bottom of the lifting frame is fixedly connected to an extrusion plate, the bottom of the extrusion plate extends to the inside of the extrusion groove, the inside of the extrusion block is evenly provided with a sliding groove surrounding the screw rod three, the circumferential side of the screw rod three is evenly fixedly connected with a slider aligned with the sliding groove, and the side of the slider is slidably connected to the side inner wall of the sliding groove.

[0016] The beneficial effects of the present invention are: 1. Through the mobile box set up, the device uses air pressure to drive the cutting knife body to impact the artificial bone body through the pneumatic impactor body. At the same time, by controlling the air pressure of the pneumatic impactor body, the sharpness and durability of the cutting knife body under different pressures are tested, so that the device can conduct a comprehensive test on the cutting knife body, thereby avoiding the cutting knife bodies produced in batches from breaking or curling due to excessively sharp edges under high pressure, or the cutting knife bodies that are too strong require greater pressure to cut bones. This is beneficial for users to test the sharpness and durability of the cutting knife body under different impact intensities, and prevent the device from being unable to simulate the working force of the cutting knife body due to test omissions, thereby affecting the accuracy of the device detection. When the screw drives the groove to squeeze the cutting knife body, the extrusion strip is stuck in the anti-slip groove and anti-slip pattern on the cutting knife body, which is beneficial for the device to fix different cutting knife bodies while preventing the cutting knife body from detaching from the device when impacting the artificial bone body, causing damage to equipment and personnel, and affecting the safety of the device.

[0017] By setting up a movable block, the motor is started to drive the rotating block to rotate, so that the rotating block drives the moving box to rotate, and the moving box drives the cutting knife body to rotate, so that the cutting knife body and the artificial bone body form a certain angle, which is conducive to the device simulating the actual impact on the artificial bone body at multiple angles, further expanding the test range of the device and improving the accuracy of the device detection.

[0018] By setting the side blocks, the artificial bone body is placed in the slot, and the three rotating plates and soft blocks are rotated by the rotating screw, so that the rotating plates and soft blocks are squeezed against the artificial bone body, which is conducive to the device to fix artificial bone bodies of various sizes and prevent the artificial bone body from moving abnormally during the test, causing the cutting knife body and the artificial bone body to be misaligned, affecting the device's detection effect on the cutting knife body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an orthopedic truncation knife sharpness tester proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of an orthopedic truncation knife sharpness tester proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a mobile box of an orthopedic truncation knife sharpness tester proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a moving block of an orthopedic truncation knife sharpness tester proposed by the present invention; Figure 5 This is a schematic diagram of the structure of the movable block of an orthopedic truncation knife sharpness tester proposed by the present invention; Figure 6 This is a schematic diagram of the side block structure of an orthopedic truncation knife sharpness tester proposed by the present invention.

[0020] In the figure: 1-base, 2-side block, 3-artificial bone body, 4-moving box, 5-screw rod 1, 6-lifting block, 7-cutting knife body, 8-groove, 9-moving block, 10-rotating block, 11-pneumatic impactor body, 12-impact column, 13-connecting ring, 14-support frame, 15-lifting groove, 16-rotating column, 17-fixed column, 18-movable block, 19-screw rod 2, 20-screw rod 3, 21-limiting column, 22-extrusion strip, 23-slotting, 24-limiting plate, 25-motor, 26-movable groove, 27-extrusion groove, 28-slider, 29-extrusion block, 30-extrusion plate, 31-lifting frame, 32-transmission groove, 33-rotating shaft, 34-soft block, 35-rotating plate, 36-spring, 37-top column. DETAILED DESCRIPTION

[0021] Example 1, with reference to Figure 1-5 , a cutting knife sharpness tester for orthopedics, comprising a base 1, an impact mechanism is provided above the base 1, the impact mechanism comprises a rotating block 10 arranged on the top of the base 1, a lifting slot 15 is provided between the two sides of the rotating block 10, the top outer wall of the lifting slot 15 is fixedly connected with a pneumatic impactor body 11, the bottom of the pneumatic impactor body 11 is slidably connected with an impact column 12, the bottom of the impact column 12 is fixedly connected with a lifting block 6 located inside the lifting slot 15, one side of the lifting block 6 is slidably connected to an inner wall of one side of the lifting slot 15, and one end of the bottom of the lifting block 6 is fixedly connected to a moving box 4, an opening is provided between the bottom outer wall of the moving box 4 and the top of the lifting block 6, a cutting knife body 7 is provided on the inner wall of the circumferential side of the opening, the bottom of the cutting knife body 7 extends to the bottom of the moving box 4, and an artificial bone body 3 aligned with the cutting knife body 7 is provided above the base 1.

[0022] In the present invention, a screw rod 5 is rotatably connected between the outer walls on both sides of the moving box 4, and the circumferential side surface of the screw rod 5 is provided with two sections of threads with opposite rotation directions. A limiting column 21 is fixedly connected between the outer walls on both sides of the moving box 4, and the circumferential side surface of the screw rod 5 is threadedly connected to at least two moving blocks 9 located inside the moving box 4, and the bottom of the moving block 9 is slidably connected to the bottom inner wall of the moving box 4.

[0023] The inner side of the moving block 9 is slidably connected to the circumferential side of the limiting column 21. The side of the moving block 9 is provided with a groove 8 aligned with the cutting knife body 7. The diameter of the groove 8 is larger than the diameter of the opening. The inner wall of the circumferential side of the groove 8 is evenly fixed with an extrusion strip 22 aligned with the cutting knife body 7.

[0024] When the present invention is used: the device is placed on a horizontal working surface through the base 1, the cutting knife body 7 is aligned with the artificial bone body 3, the pneumatic impactor body 11 is started, the pneumatic impactor body 11 drives the impact column 12 to move, the impact column 12 drives the lifting block 6 to move, the lifting block 6 drives the moving box 4 to move, and the moving box 4 drives the cutting knife body 7 to impact downward, so that the device drives the cutting knife body 7 to impact the artificial bone body 3 through air pressure, and at the same time, by controlling the air pressure of the pneumatic impactor body 11, the sharpness and durability of the cutting knife body 7 under different pressures are tested, so that the device performs a comprehensive test on the cutting knife body, thereby avoiding the cutting knife body 7 produced in batches from being chipped or rolled under high pressure due to an overly sharp cutting edge, or the cutting knife body being too strong. The body 7 requires greater pressure to cut the bone, which is beneficial for the user to test the sharpness and durability of the cutting knife body 7 under different impact intensities, and prevent the device from being unable to simulate the working force of the cutting knife body 7 due to test omissions, thereby affecting the accuracy of the device detection. After the cutting knife body 7 is placed in the moving box 4, the screw rod 5 is rotated, and the screw rod 5 drives the moving block 9 to move, and the moving block 9 drives the groove 8 and the extrusion strip 22 to move, so that the groove 8 squeezes the cutting knife body 7 while the extrusion strip 22 is stuck in the anti-slip groove and anti-slip pattern on the cutting knife body 7, which is beneficial for the device to fix different cutting knife bodies 7 while preventing the cutting knife body 7 from detaching from the device when impacting the artificial bone body 3, causing damage to equipment and personnel, and affecting the safety of the device.

[0025] Example 2, reference Figure 1-2 and Figure 5 A sharpness tester for orthopedic amputees includes a rotating block 10 whose side is fixedly connected to a connecting ring 13, a circumferential side of the connecting ring 13 is rotatably connected to a support frame 14, the bottom of the side of the support frame 14 is fixedly connected to the top of the side of the base 1, and a movable groove 26 is opened on the side of the base 1.

[0026] In the present invention, a motor 25 is fixedly connected to an outer wall of one side of the movable groove 26, and a screw rod 19 is fixedly connected to the output shaft of the motor 25. The other end of the screw rod 19 is rotatably connected to the inside of one side of the movable groove 26, and the circumferential side surface of the screw rod 19 is threadedly connected to a movable block 18 aligned with the rotating block 10.

[0027] The bottom of the movable block 18 is slidably connected to the bottom inner wall of the movable groove 26. The bottom side of the rotating block 10 is fixedly connected to at least two rotating columns 16 aligned with the movable block 18. The top of the movable block 18 is fixedly connected to a fixed column 17 located between the two rotating columns 16. The top of the fixed column 17 is fixedly connected to a limit plate 24 located above the rotating column 16.

[0028] When the present invention is used: start the motor 25, the motor 25 drives the screw rod 19 to rotate, the screw rod 19 drives the movable block 18 to move, the movable block 18 drives the fixed column 17 to move, the fixed column 17 drives the rotating column 17 to move, the rotating column 17 drives the rotating block 10 to rotate, so that the rotating block 10 drives the moving box 4 to rotate, and the moving box 4 drives the cutting knife body 7 to rotate, so that the cutting knife body 7 and the artificial bone body 3 form a certain angle, which is beneficial for the device to simulate the actual impact on the artificial bone body 3 at multiple angles, further expand the test range of the device, and improve the accuracy of the device detection.

[0029] Example 3, reference Figure 1-2 and Figure 6 A sharpness tester for orthopedic cutting knives includes a base 1 with side blocks 2 fixedly connected to both sides thereof and aligned with an artificial bone body 3, a top of the side block 2 is provided with a slot 23 aligned with the artificial bone body 3, both ends of the circumferential side surfaces of the artificial bone body 3 extend to the interior of the slot 23, a transmission slot 32 connected to the slot 23 is provided inside the side block 2, a rotating shaft 33 aligned with the slot 23 is rotatably connected between the inner walls of the two sides of the transmission slot 32, a rotating plate 35 is fixedly connected to the circumferential side surface of the rotating shaft 33, the top of the rotating plate 35 abuts against the top inner wall of the transmission slot 32, and soft blocks 34 are evenly fixedly connected to the sides of the rotating plate 35.

[0030] In the present invention, a lifting frame 31 is slidably connected between the inner walls on both sides of the transmission groove 32. The top of the side of the lifting frame 31 is meshed and connected to the circumferential side of the rotating shaft 33. A top column 37 is fixedly connected to the top inner wall of the transmission groove 32. The bottom of the top column 37 extends to the bottom of the lifting frame 31. A spring 36 surrounding the top column 37 is fixedly connected between the top of the lifting frame 31 and the top inner wall of the transmission groove 32.

[0031] An extrusion groove 27 connected to the transmission groove 32 is provided inside the side block 2, and a screw rod 20 passing through the inside of the extrusion groove 27 is slidably connected between one side of the two side blocks 2. The circumferential side surface of the screw rod 20 is threadedly connected to the inside of the base 1, and an extrusion block 29 surrounding the screw rod 20 is rotatably connected between the two inner walls of the extrusion groove 27.

[0032] The bottom of the lifting frame 31 is fixedly connected to the extrusion plate 30, and the bottom of the extrusion plate 30 extends to the inside of the extrusion groove 27. The inside of the extrusion block 29 is evenly provided with a sliding groove surrounding the screw rod 3 20. The circumferential side of the screw rod 3 20 is evenly fixedly connected with a slider 28 aligned with the sliding groove, and the side of the slider 28 is slidably connected to the side inner wall of the sliding groove.

[0033] When the present invention is used: the artificial bone body 3 is placed in the slot 23, the screw rod 320 is rotated, the screw rod 320 drives the slider 28 to move and rotate, the slider 28 drives the extrusion block 29 to rotate, the extrusion block 29 drives the extrusion plate 30 to lift, the extrusion plate 30 drives the lifting frame 31 to move, the lifting frame 31 drives the rotating shaft 33 to rotate, the rotating shaft 33 drives the rotating plate 35 to rotate, and the rotating plate 35 drives the soft block 34 to rotate, so that the rotating plate 35 and the soft block 34 are squeezed against the artificial bone body 3, which is conducive to the device to fix artificial bone bodies 3 of various sizes, and prevent the artificial bone body 3 from moving abnormally during the test process, causing the cutting knife body 7 to be staggered with the artificial bone body 3, affecting the device's detection effect on the cutting knife body 7.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An orthopedic truncation knife sharpness tester, comprising a base (1), characterized in that: An impact mechanism is provided above the base (1), and the impact mechanism includes a rotating block (10) provided at the top of the base (1), a lifting groove (15) is provided between two sides of the rotating block (10), a pneumatic impactor body (11) is fixedly connected to the top outer wall of the lifting groove (15), an impact column (12) is slidably connected to the bottom of the pneumatic impactor body (11), and a lifting block (6) located inside the lifting groove (15) is fixedly connected to the bottom of the impact column (12), one side of the lifting block (6) is slidably connected to the inner wall of one side of the lifting groove (15), and one fixed end of the bottom of the lifting block (6) is fixedly connected to the moving box (4), an opening is provided between the bottom outer wall of the moving box (4) and the top of the lifting block (6), a cutting knife body (7) is provided on the inner wall of the circumferential side of the opening, and the bottom of the cutting knife body (7) extends to the bottom of the moving box (4), and an artificial bone body (3) aligned with the cutting knife body (7) is provided above the base (1).

2. The orthopedic scissor sharpness tester according to claim 1, characterized in that: A screw rod (5) is rotatably connected between the outer walls on both sides of the moving box (4), and two sections of threads with opposite rotation directions are provided on the circumferential side surface of the screw rod (5). A limiting column (21) is fixedly connected between the outer walls on both sides of the moving box (4), and the circumferential side surface of the screw rod (5) is threadedly connected to at least two moving blocks (9) located inside the moving box (4), and the bottom of the moving block (9) is slidably connected to the bottom inner wall of the moving box (4).

3. The orthopedic scissor sharpness tester according to claim 2, characterized in that: The inner portion of the moving block (9) is slidably connected to the circumferential side surface of the limiting column (21), and a groove (8) aligned with the cutting knife body (7) is opened on the side surface of the moving block (9), the diameter of the groove (8) is larger than the diameter of the opening, and the inner wall of the circumferential side surface of the groove (8) is evenly fixedly connected with an extrusion strip (22) aligned with the cutting knife body (7).

4. An orthopedic truncation knife sharpness tester according to claim 2 or 3, characterized in that: The side of the rotating block (10) is fixedly connected to a connecting ring (13), the circumferential side of the connecting ring (13) is rotatably connected to a support frame (14), the side bottom of the support frame (14) is fixedly connected to the side top of the base (1), and a movable groove (26) is provided on the side of the base (1).

5. The orthopedic scissor sharpness tester according to claim 4, characterized in that: The outer wall of one side of the movable groove (26) is fixedly connected to the motor (25), the output shaft of the motor (25) is fixedly connected to the second screw rod (19), the other end of the second screw rod (19) is rotatably connected to the inside of one side of the movable groove (26), and the circumferential side surface of the second screw rod (19) is threadedly connected to the movable block (18) aligned with the rotating block (10).

6. The orthopedic scissor sharpness tester according to claim 5, characterized in that: The bottom of the movable block (18) is slidably connected to the bottom inner wall of the movable groove (26); the bottom of the side of the rotating block (10) is fixedly connected to at least two rotating columns (16) aligned with the movable block (18); the top of the movable block (18) is fixedly connected to a fixed column (17) located between the two rotating columns (16); and the top of the fixed column (17) is fixedly connected to a limiting plate (24) located above the rotating column (16).

7. The orthopedic scissor sharpness tester according to claim 3, characterized in that: Both sides of the base (1) are fixedly connected with side blocks (2) aligned with the artificial bone body (3), the top of the side block (2) is provided with a slot (23) aligned with the artificial bone body (3), both ends of the circumferential side of the artificial bone body (3) extend to the inside of the slot (23), the inside of the side block (2) is provided with a transmission slot (32) connected with the slot (23), a rotating shaft (33) aligned with the slot (23) is rotatably connected between the two inner walls of the transmission slot (32), a rotating plate (35) is fixedly connected to the circumferential side of the rotating shaft (33), the top of the rotating plate (35) is against the top inner wall of the transmission slot (32), and the side of the rotating plate (35) is evenly fixedly connected with a soft block (34).

8. The orthopedic scissor sharpness tester according to claim 7, characterized in that: A lifting frame (31) is slidably connected between the inner walls on both sides of the transmission groove (32), the top of the side of the lifting frame (31) is meshedly connected to the circumferential side of the rotating shaft (33), a top column (37) is fixedly connected to the top inner wall of the transmission groove (32), the bottom of the top column (37) extends to the bottom of the lifting frame (31), and a spring (36) surrounding the top column (37) is fixedly connected between the top of the lifting frame (31) and the top inner wall of the transmission groove (32).

9. The orthopedic scissor sharpness tester according to claim 8, characterized in that: The side blocks (2) are provided with an extrusion groove (27) connected to the transmission groove (32), and a screw rod (20) passing through the inside of the extrusion groove (27) is slidably connected between one side of the two side blocks (2), and the circumferential side surface of the screw rod (20) is threadedly connected to the inside of the base (1), and an extrusion block (29) surrounding the screw rod (20) is rotatably connected between the two inner walls of the extrusion groove (27).

10. The orthopedic scissor sharpness tester according to claim 9, characterized in that: The bottom of the lifting frame (31) is fixedly connected to an extrusion plate (30), and the bottom of the extrusion plate (30) extends to the inside of the extrusion groove (27). The inside of the extrusion block (29) is evenly provided with a slide groove surrounding the screw rod three (20), and the circumferential side of the screw rod three (20) is evenly fixedly connected to a slider (28) aligned with the slide groove, and the side of the slider (28) is slidably connected to the side inner wall of the slide groove.

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