Screwdriver for taking and placing steel plate in orthopedics department and capable of avoiding thread slipping

Abstract

The orthopedics department steel plate taking and placing screwdriver comprises a fixed grab handle, one end of the fixed grab handle is fixedly connected with a screwdriver rod, the outer side of the screwdriver rod is connected with a mounting rod in a clamped mode, the top end of the fixed grab handle is rotationally connected with a threaded sleeve, and the threaded sleeve is fixedly connected with the fixed grab handle. A threaded rod is in threaded connection between the inner walls of the threaded sleeve, the threaded rod penetrates through the fixed grab handle, the screwdriver rod and the mounting rod, and the bottom end of the mounting rod is slidably connected with a first screwdriver head. And the adjusting structure comprises an adjusting groove formed in the first screwdriver head, and a second connecting block is fixedly connected to the inner wall of the adjusting groove. By means of the adjusting structure, after the screwdriver head stretches into a groove of a bolt, the screwdriver head can move towards the outer side along the groove, so that the screwdriver head and the groove of the bolt are tightly connected together, the screwdriver is not prone to slipping relative to the bolt when rotating, and dismounting of the bolt is facilitated.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a screwdriver for orthopedic steel plate removal and placement which can avoid thread slippage. Background Art

[0002] At present, more and more patients suffer from fractures caused by trauma. Early surgical treatment after fracture can help patients recover quickly. In orthopedic surgery, a solid locking internal fixation plate is still the first choice for treating fractures. After the fracture heals, the internal fixation plate needs to be removed, but the locking screws on some plates will be tightly combined with the bone, resulting in bone wrapping the screws, which makes it easy for the screws to slip when removing the internal fixation. When the screws slip, it will greatly increase the difficulty of the operation, prolong the operation time, and increase the chance of postoperative infection and other complications. Therefore, a plate screwdriver is needed to facilitate the removal of the screws on the plate.

[0003] When the existing screwdriver is used to remove the bolts on the steel plate, the screwdriver head and the bolt groove are not tightly connected. Therefore, the screwdriver head is easily not stressed when the screwdriver is turned, that is, slippage occurs between the screwdriver head and the bolt, making it difficult to remove the bolt. At the same time, during the process of removing the steel plate, the operator's tissue fluid will flow to the bolt. The tissue fluid flowing into the bolt groove will have a lubricating effect, which will further cause the screwdriver head to slip, making it difficult to remove it. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: a fixed handle, one end of the fixed handle is fixedly connected to a screwdriver rod, the outer side of the screwdriver rod is clamped with a mounting rod, the top of the fixed handle is rotatably connected to a threaded sleeve, the inner wall of the threaded sleeve is threadedly connected to a threaded rod, the threaded rod passes through the fixed handle, the screwdriver rod and the mounting rod, and the bottom end of the mounting rod is slidably connected to a screwdriver head;

[0005] An adjustment structure is disclosed, wherein the adjustment structure comprises an adjustment slot formed on a screwdriver head 1, a connection block 2 being fixedly connected to the inner wall of the adjustment slot, and a connection block 1 corresponding to the connection block 2 being arranged above the connection block 2. A screwdriver for orthopedic steel plate removal and placement which can avoid thread slippage is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A screwdriver for orthopedic steel plate removal and placement capable of preventing thread slippage, comprising:

[0008] A fixed handle, one end of which is fixedly connected to a screwdriver rod, the outer side of which is clamped with a mounting rod, the top of which is rotatably connected to a threaded sleeve, the inner wall of which is threadedly connected to a threaded rod, the threaded rod passes through the fixed handle, the screwdriver rod and the mounting rod, and the bottom end of the mounting rod is slidably connected to a screwdriver head;

[0009] An adjustment structure, the adjustment structure includes an adjustment groove opened on a screwdriver head 1, a connecting block 2 is fixedly connected to the inner wall of the adjustment groove, a connecting block 1 corresponding to it is arranged above the connecting block 2, the top of the connecting block 1 is abutted against the threaded rod, connecting grooves are opened on both the connecting block 2 and the connecting block 1, a connecting shaft is fixedly connected between the inner walls of each of the connecting grooves, and a connecting rod is rotatably connected between the corresponding connecting shafts.

[0010] Preferably, a mounting groove is provided at the top of the mounting rod, the screwdriver rod is extended to the inner side of the mounting groove, a fixing slot is provided on the side wall of the screwdriver rod, an extrusion block corresponding to the position of the fixing slot is slidably connected to the inner wall of the mounting groove, the extrusion block passes through the inner wall of the mounting groove and extends to the outer side of the mounting rod, one end of the extrusion block located on the inner side of the mounting groove is fixedly connected to an adjusting rod, the end of the adjusting rod is fixedly connected to a fixing block, and a connecting spring is fixedly connected between the side wall of the fixing block and the inner wall of the mounting groove.

[0011] Preferably, one end of the extrusion block located outside the mounting rod is hemispherical.

[0012] Preferably, a sliding block is fixedly connected to the top of the screwdriver head 1, a sliding groove corresponding to the sliding block is opened at the bottom end of the mounting rod, and a fixing spring is fixedly connected between the sliding block and the inner wall of the sliding groove.

[0013] Preferably, a fixing sleeve is sleeved on the outer side of the mounting rod, a fixing suction cup is fixedly connected to the bottom end of the fixing sleeve, a limiting groove is provided on the inner wall of the fixing sleeve, and a limiting plate corresponding to the limiting groove is fixedly connected to the side wall of the mounting rod.

[0014] Preferably, a second screwdriver head is slidably connected to the bottom end of the mounting rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By adjusting the structure, after the screwdriver head is inserted into the slot of the bolt, the screwdriver head can move outward along the slot, so that the screwdriver head and the slot of the bolt are tightly connected together, so that the screwdriver is not easy to slip between the bolt when rotating, which is conducive to the removal of the bolt;

[0017] 2. A fixed sleeve and a fixed suction cup are provided. The entire screwdriver is fixed on the steel plate through the suction cup. The fixed sleeve is used to protect the inner side of the fixed suction cup to prevent tissue fluid from flowing to the inner side of the fixed sleeve, thereby preventing the screwdriver head from slipping due to tissue fluid, which is beneficial to the use of the screwdriver;

[0018] 3. The screwdriver head can be replaced according to the different bolts, so that the entire screwdriver is more flexible in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage proposed by the present invention;

[0020] Figure 2 A schematic diagram of the disassembled three-dimensional structure of a screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage proposed by the present invention;

[0021] Figure 3 A three-dimensional structural schematic diagram of an adjustment structure of a screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage proposed by the present invention;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of a mounting rod of a screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage proposed by the present invention;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of a screwdriver for orthopedic steel plate removal and placement that can avoid thread slipping after the screwdriver head is replaced;

[0024] Figure 6 The present invention provides a three-dimensional structural schematic diagram of two parts of a screwdriver head of a screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage.

[0025] In the figure: 1 fixed handle, 2 screwdriver rod, 3 mounting rod, 4 fixed sleeve, 5 fixed suction cup, 6 screwdriver head 1, 7 threaded rod, 8 threaded sleeve, 9 extrusion block, 10 fixed card slot, 11 limit plate, 12 sliding slot, 13 fixed spring, 14 sliding block, 15 adjustment structure, 16 limit slot, 17 adjustment slot, 18 connecting block 1, 19 connecting block 2, 20 connecting slot, 21 connecting shaft, 22 connecting rod, 23 adjustment rod, 24 fixed card block, 25 connecting spring, 26 mounting slot, 27 screwdriver head 2. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Embodiment 1, refer to Figure 1-Figure 4 , a screwdriver for orthopedic plate removal and placement capable of avoiding thread slippage, comprising:

[0028] A fixed handle 1 is provided, one end of which is fixedly connected to a screwdriver rod 2, and a mounting rod 3 is clamped on the outer side of the screwdriver rod 2. A threaded sleeve 8 is rotatably connected to the top of the fixed handle 1, and a threaded rod 7 is threadedly connected between the inner walls of the threaded sleeve 8. The threaded rod 7 passes through the fixed handle 1, the screwdriver rod 2 and the mounting rod 3. The threaded rod 7 is slidably connected to the screwdriver rod 2, so when the threaded sleeve 8 is rotated, the threaded rod 7 can be moved. A screwdriver head 6 is slidably connected to the bottom end of the mounting rod 3. The screwdriver head 6 is extended into the groove of the bolt, and the threaded sleeve 8 is rotated to move the threaded rod 7. The screwdriver head 6 is moved outward in cooperation with the adjusting structure 15, so that the screwdriver head 6 is precisely fitted with the inner wall of the groove of the bolt, so that when the fixed handle 1 is rotated, the screwdriver head 6 and the bolt and the groove are not easy to slip, so that the bolt can be removed easily.

[0029] The adjustment structure 15 includes an adjustment groove 17 provided on the screwdriver head 1 6, a connection block 19 is fixedly connected to the inner wall of the adjustment groove 17, a connection block 18 corresponding to the connection block 19 is arranged above the connection block 19, the top of the connection block 18 is against the threaded rod 7, and connection grooves 20 are provided on the connection block 19 and the connection block 1 18, and a connection shaft 21 is fixedly connected between the inner walls of each connection groove 20, and a connection rod 22 is rotatably connected between the corresponding connection shafts 21.

[0030] The threaded rod 7 is moved downward, and the threaded rod 7 is pressed against the top of the connecting block 18. As the threaded rod 7 moves, the threaded rod 7 squeezes the connecting block 18 to make it move downward, while the connecting block 2 19 cannot move in the vertical direction, so that the connecting rod 22 on the connecting block 18 rotates outward, pushing the connecting block 2 19 to move outward accordingly, and the screwdriver head 1 6 moves outward together;

[0031] A mounting groove 26 is provided at the top of the mounting rod 3, and the screwdriver rod 2 is extended to the inner side of the mounting groove 26. A fixing groove 10 is provided on the side wall of the screwdriver rod 2. An extrusion block 9 corresponding to the position of the fixing groove 10 is slidably connected to the inner wall of the mounting groove 26. The extrusion block 9 penetrates the inner wall of the mounting groove 26 and extends to the outer side of the mounting rod 3. An end of the extrusion block 9 located on the inner side of the mounting groove 26 is fixedly connected to an adjusting rod 23, and a fixing block 24 is fixedly connected to the end of the adjusting rod 23. A connecting spring 25 is fixedly connected between the side wall of the fixing block 24 and the inner wall of the mounting groove 26, and the elastic force of the connecting spring 25 can facilitate its reset; one end of the extrusion block 9 located on the outer side of the mounting rod 3 is hemispherical, so as to facilitate the extrusion block 9 to be squeezed and moved;

[0032] Insert the screwdriver rod 2 into the mounting groove 26 on the mounting rod 3, so that the fixed slot 10 on the screwdriver rod 2 corresponds to the position of the extrusion block 9, push the extrusion block 9 to move the adjustment rod 23, drive the fixed block 24 to move, and the fixed block 24 is inserted into the fixed slot 10 to fix the mounting rod 3 and the screwdriver rod 2 together. At this time, the connecting spring 25 is stretched;

[0033] The top of the screwdriver head 6 is fixedly connected with a sliding block 14, and the bottom of the mounting rod 3 is provided with a sliding groove 12 corresponding to the sliding block 14. A fixing spring 13 is fixedly connected between the sliding block 14 and the inner wall of the sliding groove 12. When the screwdriver head 6 moves outward, the sliding block 14 moves together, thereby deforming the fixing spring 13, and the elastic force of the fixing spring 13 can make the screwdriver head 6 return to its original position for resetting.

[0034] A fixing sleeve 4 is sleeved on the outer side of the mounting rod 3, and the fixing sleeve 4 extends to the lower part of the mounting rod 3 and the screwdriver head 6, and the length of the fixing sleeve 4 is longer than the sum of the mounting rod 3 and the screwdriver head 6, and a fixing suction cup 5 is fixedly connected to the bottom end of the fixing sleeve 4, and a limiting groove 16 is provided on the inner wall of the fixing sleeve 4, and a limiting plate 11 corresponding to the limiting groove 16 is fixedly connected to the side wall of the mounting rod 3, and the limiting groove 16 and the limiting plate 11 can prevent the fixing sleeve 4 from falling off from the outer side of the mounting rod 3;

[0035] When removing the steel plate, the exuded tissue fluid flows to the position of the bolt, and the tissue fluid flowing into the groove of the bolt plays a lubricating role, causing the screwdriver head 6 to slip, making it difficult to remove the bolt, which is not conducive to the disassembly of the steel plate. Before removing the bolt on the steel plate, the fixed suction cup 5 is first adsorbed on the steel plate. The fixed suction cup 5 has the effect of limiting and fixing the position of the entire screwdriver. At the same time, with the fixed sleeve 4, the bolt on the steel plate is protected on its inner side to prevent the screwdriver head 6 from slipping. At the same time, when the screwdriver head 6 is moved downward relative to the fixed sleeve 4, when the bolt is removed, the fixed spring 4 moves upward relative to the screwdriver head 6 and the mounting rod 3, thereby squeezing the squeezing block 9 to move the squeezing block 9;

[0036] In this embodiment, after the steel plate to be disassembled leaks out, the tissue fluid is sucked away, and then the fixed suction cup 5 is adsorbed on the steel plate. The fixed suction cup 5 has the effect of limiting and fixing the position of the entire screwdriver, and at the same time cooperates with the fixed sleeve 4, the bolts on the steel plate are protected on the inner side thereof to prevent the screwdriver head 6 from slipping. At the same time, when the screwdriver head 6 is moved downward relative to the fixed sleeve 4 to remove the bolt, the fixing spring 4 moves upward relative to the screwdriver head 6 and the mounting rod 3, thereby squeezing the squeezing block 9 to move the squeezing block 9. The movement of the squeezing block 9 causes the adjusting rod 23 to move accordingly, driving the fixed clamping block 24 to move, and the fixed clamping block 24 is clamped into the fixed clamping groove 10 to fix the mounting rod 3 and the screwdriver rod 2 together. At this time, the connecting spring 25 Stretch, so as to ensure that when the bolt is disassembled, the screwdriver rod 2 and the mounting rod 3 are fixed together, so that the screwdriver head 6 extends into the groove of the bolt, the threaded sleeve 8 is rotated to move the threaded rod 7, the screwdriver head 6 extends into the groove of the bolt, the threaded sleeve 8 is rotated to move the threaded rod 7, and the screwdriver head 6 is moved outward with the adjustment structure, so that the screwdriver head 6 is precisely fitted with the inner wall of the bolt groove, so that when the fixed handle 1 is rotated, the screwdriver head 6 is not easy to slip between the bolt and the groove, so as to facilitate the removal of the bolt, so as to remove the steel plate;

[0037] Example 2, refer to Figure 5-Figure 6 A screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage. The bottom end of the mounting rod 3 is slidably connected with a screwdriver head 27. The screwdriver head 27 is composed of multiple components corresponding to its shape. Each component of the screwdriver head 27 is moved outward by adjusting the structure 15, so that the screwdriver head 27 can be precisely fitted with the inner wall of the bolt groove to facilitate the removal of the bolt.

[0038] In this embodiment, according to the bolts actually used on the steel plate, the second screwdriver head 27 is selected, and the fixed suction cup 5 is adsorbed on the steel plate. The fixed suction cup 5 has the effect of limiting and fixing the position of the entire screwdriver, and at the same time cooperates with the fixed sleeve 4. The bolts on the steel plate are protected on the inner side thereof to prevent the second screwdriver head 27 from slipping. At the same time, when the second screwdriver head 27 is moved downward relative to the fixed sleeve 4 to remove the bolt, the fixing spring 4 moves upward relative to the second screwdriver head 27 and the mounting rod 3, thereby squeezing the squeezing block 9 to move the squeezing block 9. The movement of the squeezing block 9 causes the adjusting rod 23 to move accordingly, driving the fixed clamping block 24 to move. The fixed clamping block 24 is clamped into the fixed clamping groove 10, fixing the mounting rod 3 and the screwdriver rod 2 together. At this time, the connecting spring 25 pulls Stretch, thereby ensuring that when the bolt is disassembled, the screwdriver rod 2 and the mounting rod 3 are fixed together, so that the second screwdriver head 27 extends into the groove of the bolt, the threaded sleeve 8 is rotated to move the threaded rod 7, and the second screwdriver head 27 extends into the groove of the bolt, and the threaded sleeve 8 is rotated to move the threaded rod 7, and the adjusting structure is used to move the second screwdriver head 27 outward, so that the second screwdriver head 27 is precisely fitted with the inner wall of the bolt groove, so that when the fixed handle 1 is rotated, the second screwdriver head 27 and the bolt and the groove are not easy to slip, so as to facilitate the removal of the bolt, thereby removing the steel plate.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage, characterized in that: include: A fixed handle (1), one end of the fixed handle (1) is fixedly connected to a screwdriver rod (2), the outer side of the screwdriver rod (2) is clamped with a mounting rod (3), the top end of the fixed handle (1) is rotatably connected to a threaded sleeve (8), the inner wall of the threaded sleeve (8) is threadedly connected to a threaded rod (7), the threaded rod (7) passes through the fixed handle (1), the screwdriver rod (2) and the mounting rod (3), and the bottom end of the mounting rod (3) is slidably connected to a screwdriver head (6); The adjustment structure (15) comprises an adjustment groove (17) formed on a screwdriver head (6), a connection block (19) being fixedly connected to an inner wall of the adjustment groove (17), a connection block (18) corresponding to the connection block (19) being arranged above the connection block (19), a top end of the connection block (18) being abutted against a threaded rod (7), a connection groove (20) being formed on both the connection block (19) and the connection block (18), a connection shaft (21) being fixedly connected between the inner walls of each of the connection grooves (20), and a connection rod (22) being rotatably connected between the corresponding connection shafts (21).

2. A screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage according to claim 1, characterized in that: The top of the mounting rod (3) is provided with a mounting groove (26), the screwdriver rod (2) is extended to the inner side of the mounting groove (26), a fixing groove (10) is provided on the side wall of the screwdriver rod (2), an extrusion block (9) corresponding to the position of the fixing groove (10) is slidably connected to the inner wall of the mounting groove (26), the extrusion block (9) penetrates the inner wall of the mounting groove (26) and extends to the outer side of the mounting rod (3), one end of the extrusion block (9) located inside the mounting groove (26) is fixedly connected to the adjusting rod (23), the end of the adjusting rod (23) is fixedly connected to the fixing block (24), and a connecting spring (25) is fixedly connected between the side wall of the fixing block (24) and the inner wall of the mounting groove (26).

3. A screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage according to claim 2, characterized in that: One end of the extrusion block (9) located outside the mounting rod (3) is hemispherical.

4. A screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage according to claim 3, characterized in that: The top end of the screwdriver head (6) is fixedly connected to a sliding block (14), the bottom end of the mounting rod (3) is provided with a sliding groove (12) corresponding to the sliding block (14), and a fixing spring (13) is fixedly connected between the sliding block (14) and the inner wall of the sliding groove (12).

5. The screwdriver for orthopedic steel plate removal and placement capable of avoiding thread slipping according to claim 4, characterized in that: The outer side of the mounting rod (3) is sleeved with a fixing sleeve (4), the bottom end of the fixing sleeve (4) is fixedly connected to a fixing suction cup (5), the inner wall of the fixing sleeve (4) is provided with a limiting groove (16), and the side wall of the mounting rod (3) is fixedly connected to a limiting plate (11) corresponding to the limiting groove (16).

6. A screwdriver for orthopedic steel plate removal and placement that can avoid thread slippage according to claim 5, characterized in that: The bottom end of the mounting rod (3) is slidably connected to a second screwdriver head (27).

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