Orthopedic plate screw slot changing tool and use method thereof

Abstract

The present invention relates to the field of medical device technology, and in particular to an orthopedic steel plate screw groove changing tool, comprising a pliers body, a sharp steel cutter head fixedly connected to the outer side surface of a pliers claw on one side of the pliers body jaws, a fixed groove fixedly connected to the inner side surface of the pliers claw on the other side of the pliers body jaws, a reset spring fixedly connected between corresponding surfaces at the front end of a pliers body handle, and the elastic coefficient of the reset spring matches the overall structure of the pliers body; the present invention has a sharp steel cutter head fixedly connected to the outer side surface of the pliers claw on one side of the pliers body jaws, so that during use, the groove changing tool for removing orthopedic steel plate screws can change a slot on the steel plate screw cap through the sharp steel cutter head under the action of the lever principle of the pliers body itself, and then use a special straight-shaped screwdriver to easily remove the screw, avoiding the current clinical common use of ring saws, bone drills to drill holes or use bone chisels to remove the bone around the screws. The method of removing the screw causes greater damage to the strength of the backbone structure, and meets the use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an orthopedic plate screw slot changing tool and a use method thereof. Background Art

[0002] Plate and screw internal fixation is one of the main surgical methods for treating limb fractures. Its effectiveness and superiority have been proven in clinical practice. However, it also has certain limitations. Long-term retention of plates and screws in the body can cause osteoporosis, bending and breaking of plates and screws due to stress shielding. Therefore, a consensus has been reached clinically that plates and screws should not be retained in the body for a long time as foreign bodies after fracture healing and should be removed. Plate and screw fixation after limb fractures is currently a commonly used internal fixation method in clinical practice. Plate and screws need to be removed after fracture healing. During the screw removal process, the screw cap slot may be damaged due to the doctor's operation, the quality, design and material of the screw itself. At this time, the screw cap slot can be changed into a slotted slot by the slot modification method, and the screw can be easily removed with a special slotted screwdriver.

[0003] Currently, the common clinical methods of removing screws are to use ring saws, bone drills to drill holes, or bone chisels to remove the bone around the screws. This is not only laborious and time-consuming, but also causes great damage to the structural strength of the backbone. It turns small operations such as internal fixation removal into major operations with long operation times, heavy bleeding, and severe injuries, and may even cause re-fractures, which cannot meet the needs of doctors. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an orthopedic plate screw slot changing tool and a use method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tool for changing the groove of an orthopedic steel plate screw is designed, comprising a pliers body, a sharp steel blade head is fixedly connected to the outer side surface of the pliers claw on one side of the pliers body jaws, a fixing groove is fixedly connected to the inner side surface of the pliers claw on the other side of the pliers body jaws, a reset spring is fixedly connected between corresponding surfaces at the front end position of the pliers body handle, and the elastic coefficient of the reset spring matches the overall structure of the pliers body, an anti-slip ring is fixedly connected to the outer side of the handle on one side of the pliers body, and the size of the anti-slip ring matches the size of an adult finger.

[0007] Preferably, the pliers body is made of stainless steel as a whole, the jaw on one side of the pliers jaw position is shorter than the jaw on the other side, and the high-speed steel blade is fixedly connected to the outer side of the shorter jaw at the pliers jaw position, and the top of the longer jaw at the pliers jaw position is fixedly connected with a silicone pad.

[0008] Preferably, the high-speed steel blade head includes a high-speed steel blade column, a high-speed steel blade and a connecting seat. The high-speed steel blade is fixedly connected to the end of the high-speed steel blade column, and the high-speed steel blade and the high-speed steel blade column are an integrally formed structure. The diameter of the high-speed steel blade column is 1 cm, and the thickness of the high-speed steel blade is 1 mm. The connecting seat is fixedly connected to the outer side of the high-speed steel blade column, and the connecting seat and the high-speed steel blade column are an integrally formed structure. The side of the connecting seat facing away from the high-speed steel blade column is fixedly connected to the outer side of the shorter jaw at the front end of the pliers body by bolts.

[0009] Preferably, the surface of the connection seat is symmetrically connected with fixing bolts through threads, and a threaded hole is opened on the jaw side surface at one side of the front end of the pliers body, and the position structure of the fixing bolt matches that of the threaded hole.

[0010] Preferably, the outer side surfaces of the pliers handles are both embedded with anti-slip layers.

[0011] A method for using the orthopedic plate screw slot changing tool is also provided, comprising the following steps:

[0012] S1: First, the surgeon holds the handle of the groove modification tool with one hand and inserts the ring finger into the anti-slip ring to prevent the groove modification tool from slipping out of the surgeon's hand due to unexpected factors during the operation, causing unnecessary harm to the patient;

[0013] S2: Clamp the bottom end of the steel plate screw into the fixing groove;

[0014] S3: By pressing the handle of the pliers, the pliers itself uses the lever principle to change a slot on the surface of the steel plate screw cap through the sharp steel blade. After each press, the jaws of the pliers can automatically open under the action of the reset spring, which is convenient for the surgeon to change the slot of the steel plate screw cap to meet the use requirements;

[0015] S4: The silicone pad fixedly connected to the top of the longer jaws at the jaws of the pliers can protect the patient's wound and prevent the front end of the metal jaws of the pliers from causing certain damage to the patient during the use of this groove modification tool.

[0016] The invention provides an orthopedic plate screw slot changing tool and a method of using the same, which have the following beneficial effects:

[0017] 1. The present invention fixes a sharp steel cutter head on the outer side of the jaws on one side of the jaws of the pliers body, so that the groove changing tool for removing orthopedic steel plate screws can change a slot on the steel plate screw cap through the sharp steel cutter head under the action of the lever principle of the pliers body itself during use, and then use a special flat-head screwdriver to easily remove the screw. The operation is simple, safe to use, and time-saving and labor-saving. It avoids the current clinical common use of ring saws, bone drills to drill holes, or using bone chisels to remove the bone around the screws, which causes great damage to the strength of the backbone structure. At the same time, it is not easy to damage the surrounding tissues during the groove changing process, which meets the use requirements.

[0018] 2. By fixing a reset spring between corresponding surfaces at the front end of the pliers handle, the jaws of the pliers for removing orthopedic plate screws can be automatically opened by the reset spring during use, making it easier for surgeons to change the grooves of the plate screw caps and meeting usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of an orthopedic plate screw slot changing tool proposed by the present invention;

[0020] Figure 2 This is a schematic structural diagram of the separation of the pliers body and the sharp steel blade head in an orthopedic plate screw slot changing tool proposed by the present invention;

[0021] Figure 3 for Figure 1 and Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 5 This is a structural schematic diagram of a center steel blade of an orthopedic plate screw slot changing tool proposed by the present invention.

[0024] In the figure: 1. pliers body; 2. high-speed steel blade; 3. fixing groove; 4. reset spring; 5. anti-slip ring; 6. silicone pad; 7. high-speed steel blade column; 8. high-speed steel blade; 9. connecting seat; 10. fixing bolt; 11. threaded hole; 12. anti-slip layer. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1-Figure 5A tool for changing the groove of an orthopedic steel plate screw comprises a pliers body 1, a sharp steel blade head 2 is fixedly connected to the outer side surface of the pliers claw on one side of the pliers body 1, a fixing groove 3 is fixedly connected to the inner side surface of the pliers claw on the other side of the pliers body 1, a reset spring 4 is fixedly connected between the corresponding surfaces at the front end position of the handle of the pliers body 1, and the elastic coefficient of the reset spring 4 matches the overall structure of the pliers body 1, an anti-slip ring 5 is fixedly connected to the outer side of the handle on one side of the pliers body 1, and the size of the anti-slip ring 5 matches the size of an adult's finger.

[0027] The pliers body 1 is made of stainless steel as a whole. The claw on one side of the jaw of the pliers body 1 is shorter than the claw on the other side, and a high-speed steel blade head 2 is fixedly connected to the outer side of the shorter claw at the jaw of the pliers body 1, and a silicone pad 6 is fixedly connected to the top of the longer claw at the jaw of the pliers body 1. By setting the jaws of the pliers body 1 as a long and short structure, a certain space is provided for the use of the high-speed steel blade head 2 to meet the use requirements. By fixing and connecting the silicone pad 6 on the top of the longer claw at the jaw of the pliers body 1, the patient's wound can be further protected to avoid the front end of the jaw of the metal structure of the pliers body 1 causing certain damage to the patient during the use of this groove changing tool.

[0028] The high-speed steel blade head 2 includes a high-speed steel blade column 7, a high-speed steel blade 8 and a connecting seat 9. The high-speed steel blade 8 is fixedly connected to the end of the high-speed steel blade column 7, and the high-speed steel blade 8 and the high-speed steel blade column 7 are an integrally formed structure. The diameter of the high-speed steel blade column 7 is 1 cm, and the thickness of the high-speed steel blade 8 is 1 mm. The connecting seat 9 is fixedly connected to the outer side of the high-speed steel blade column 7, and the connecting seat 9 and the high-speed steel blade column 7 are an integrally formed structure. The side of the connecting seat 9 facing away from the high-speed steel blade column 7 is fixedly connected to the outer side of the shorter jaw at the front end of the pliers body 1 by bolts; high-speed steel is a tool steel with high hardness, high wear resistance and high heat resistance. High-speed steel is a complex type of steel with a carbon content between 0.70% and 1.65%. It contains a lot of alloy elements, with a total amount of up to 10-25%. Its hardness is HRC58-66. It has excellent rust resistance, corrosion resistance, wear resistance, high hardness and ideal impact resistance. Using high-speed steel to make groove-changing tools is the best choice. By fixing a high-speed steel cutter head 2 on the outer side of the jaws on one side of the jaws of the pliers body 1, the groove-changing tool for removing orthopedic steel plate screws can be used to change a slot in the steel plate screw cap through the high-speed steel cutter head 2 under the action of the lever principle of the pliers body 1 itself during use, and then use a special flat-blade screwdriver to easily remove the screw, thereby avoiding the current clinical method of using a ring to remove the screw, which causes greater damage to the strength of the backbone structure and meets the use requirements.

[0029] The surface of the connecting seat 9 is symmetrically connected with a fixing bolt 10 through a thread, and a threaded hole 11 is opened on the jaw side surface on the front end side of the pliers body 1, and the position structure of the fixing bolt 10 and the threaded hole 11 are matched; by providing the fixing bolt 10 and the threaded hole 11, the high-speed steel cutter head 2 can be disassembled and replaced. When the high-speed steel blade 8 of the high-speed steel cutter head 2 becomes passivated after long-term use, the fixing bolt 10 and the threaded hole 11 can cooperate to disassemble and replace the high-speed steel cutter head 2 to meet the use requirements.

[0030] The outer side surfaces of the handles of the pliers body 1 are both embedded and connected with an anti-skid layer 12; the anti-skid layer 12 can prevent the groove changing tool from accidentally falling off during use.

[0031] A method for using the orthopedic plate screw slot changing tool is also provided, comprising the following steps:

[0032] S1: First, the surgeon holds the handle of the groove modification tool with one hand and inserts the ring finger into the anti-slip ring 5 to prevent the groove modification tool from slipping out of the surgeon's hand due to unexpected factors during the operation, causing unnecessary harm to the patient;

[0033] S2: Clamp the bottom end of the steel plate screw into the fixing groove 3;

[0034] S3: By pressing the handle of the pliers body 1, the pliers body 1 can change a slot on the surface of the steel plate screw cap through the sharp steel blade 2 under the action of the lever principle. After each pressing, the jaw position of the pliers body 1 can be automatically opened by the reset spring 4, which is convenient for the surgeon to change the slot of the steel plate screw cap to meet the use requirements;

[0035] S4: The silicone pad 6 fixedly connected to the top of the longer jaws of the jaws of the jaws of the jaws body 1 can protect the patient's wound, thereby preventing the front end of the jaws of the metal structure of the jaws of the jaws body 1 from causing certain damage to the patient during the use of the groove modification tool.

[0036] 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. An orthopedic plate screw slot changing tool, comprising a pliers body (1), characterized in that: A sharp steel blade (2) is fixedly connected to the outer side of the jaws on one side of the jaws of the pliers body (1); a fixing groove (3) is fixedly connected to the inner side of the jaws on the other side of the jaws of the pliers body (1); a reset spring (4) is fixedly connected between corresponding surfaces at the front end of the handle of the pliers body (1); and the elastic coefficient of the reset spring (4) matches the overall structure of the pliers body (1); an anti-slip ring (5) is fixedly connected to the outer side of the handle on one side of the pliers body (1); and the size of the anti-slip ring (5) matches the size of an adult's finger; The pliers body (1) is made of stainless steel as a whole, the pliers claw on one side of the pliers body (1) is shorter than the pliers claw on the other side, and the sharp steel blade (2) is fixedly connected to the outer side of the pliers claw with a shorter size at the pliers body (1) at the pliers mouth, and the top of the pliers claw with a longer size at the pliers body (1) at the pliers mouth is fixedly connected with a silicone pad (6); The sharp steel blade head (2) comprises a sharp steel blade column (7), a sharp steel blade (8) and a connecting seat (9); the sharp steel blade (8) is fixedly connected to the end of the sharp steel blade column (7), and the sharp steel blade (8) and the sharp steel blade column (7) are an integrally formed structure; the diameter of the sharp steel blade column (7) is 1 cm, and the thickness of the sharp steel blade (8) is 1 mm; the connecting seat (9) is fixedly connected to the outer side of the sharp steel blade column (7), and the connecting seat (9) and the sharp steel blade column (7) are an integrally formed structure; the side of the connecting seat (9) facing away from the sharp steel blade column (7) is fixedly connected to the outer side of the shorter jaw at the front end of the pliers body (1) by bolts.

2. The orthopedic plate screw slot changing tool according to claim 1, characterized in that: The surface of the connection seat (9) is symmetrically connected with a fixing bolt (10) through a thread, and a threaded hole (11) is provided on the jaw side surface at the front end of the pliers body (1), and the position structure of the fixing bolt (10) and the threaded hole (11) are matched.

3. The orthopedic plate screw slot changing tool according to claim 1, characterized in that: The outer side surfaces of the handles of the pliers body (1) are both sleeve-connected with an anti-slip layer (12).

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