Binding wire fixing type bone fracture plate

Abstract

The invention discloses a binding wire fixing type bone fracture plate, and belongs to the technical field of bone fracture plates, an expansion piece and an expansion pipe are placed in a reserved hole site of a bone of a patient, a binding wire is pulled from a first port to drive the expansion piece to move towards a second port, and the outer wall, expanding outwards, of the expansion pipe abuts against the inner wall of the reserved hole site of the bone of the patient; the second clamping structure of the fixing ring is matched with the first clamping structure of the binding wire to prevent the binding wire from sliding from the first port to the second port, so that the expansion pipe keeps expanding and is fixed in a reserved hole site of a bone of a patient, and fixation of the bone fracture plate is completed; when the bone fracture plate needs to be detached, the binding wire is cut off from the gap between the fixing ring and the body, then the bone fracture plate can be pulled to enable the expansion pipe to move in the direction of being separated from the reserved hole site of the bone of the patient, the expansion pipe is restored, the expansion pipe can be separated from the reserved hole site of the bone of the patient, and the bone fracture plate is convenient to detach; the secondary injury to the bone of the patient caused by the disassembly work of the bone fracture plate is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bone fracture plates, and in particular to a wire-fixed bone fracture plate. Background Art

[0002] Bone plates are perforated plate-shaped internal fixation devices for fractures, and are often used in conjunction with bone nails or bone screws in clinical practice. Existing bone plates generally have reserved holes to facilitate the insertion of bone nails, and some bone plates need to be removed after the patient's fracture has recovered, such as bone plates in the craniomaxillofacial area. When removing the bone plate, the screw thread is combined with the patient's bone, making it difficult to screw out the screw or even causing the screw thread to slip, which brings great uncertainty to the removal of the bone plate and is prone to causing secondary damage to the patient's bones. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a wire-fixed bone plate, which makes the disassembly of the bone plate more convenient and avoids secondary damage to the patient's bones caused by the disassembly of the bone plate.

[0004] The wire-fixed bone plate according to an embodiment of the present invention comprises: The body is provided with a through threading hole, wherein the threading hole is provided with a first port and a second port; An expansion pipe, arranged on the body, the expansion pipe is provided with a through inner hole, and the inner hole is communicated with the second port; A tie wire passes through the threading hole and the inner hole, and the outer side wall of the tie wire is provided with a first clamping structure; An expansion piece, provided on the tie wire, wherein the outer diameter of the expansion piece is larger than the diameter of the inner hole; A fixing ring, provided with a fixing hole, wherein the fixing hole is sleeved on the outside of the binding wire, and the inner side wall of the fixing hole is provided with a second clamping structure; The movement of the tie wire from the second port to the first port drives the expansion member to push the expansion tube to expand outward, and the second clamping structure cooperates with the first clamping structure to limit the freedom of movement of the tie wire from the first port to the second port.

[0005] The wire-fixed bone fracture plate according to the embodiment of the present invention has at least the following beneficial effects: when installing the bone fracture plate, the wire is passed through the wire threading hole of the body and the inner hole of the expansion tube, so that one end of the wire is extended from the second port and connected to the expansion piece, and then the other end of the wire is extended from the first port and inserted into the fixing hole of the fixing ring; then the expansion piece and the expansion tube are placed in the hole reserved for the patient's bone, and the wire is pulled from the first port so that the wire drives the expansion piece to move toward the second port, and then the expansion piece is inserted into the inner hole of the expansion tube and the expansion tube is stretched open, so that the outer wall of the expansion tube that expands outwards abuts against the inner wall of the hole reserved for the patient's bone, and the second clamping structure of the fixing ring and the first clamping structure of the wire The expansion tube is then pulled out of the hole in the patient's bone and the bone plate is then released, and the expansion tube is then released from ... released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and the bone plate is released, and

[0006] According to some embodiments of the present invention, taking the position of the expansion tube relative to the body as a relative rear direction, the second port is located at the rear side of the body, and the first port is located at the upper side, lower side, left side or right side of the body.

[0007] According to some embodiments of the present invention, the expansion tube, the tie wire, the expansion piece, and the fixing ring are all made of titanium alloy material.

[0008] According to some embodiments of the present invention, the outer side wall of the expansion tube is provided with a plurality of annular grooves, and the annular grooves surround the circumference of the expansion tube.

[0009] According to some embodiments of the present invention, a cylinder is provided at the end of the tie wire, the expansion piece is provided with a through hole, the through hole is sleeved on the outside of the tie wire, and the cylinder abuts against the expansion piece.

[0010] According to some embodiments of the present invention, the outer diameter of the expansion piece gradually increases from a side close to the expansion tube toward a direction away from the expansion tube.

[0011] According to some embodiments of the present invention, the first clamping structure includes a plurality of clamping blocks, which are spaced apart along the length direction of the binding wire, and the second clamping structure includes a plurality of clamping grooves, which are spaced apart along the axial direction of the fixing hole, and the clamping block cooperates with any one of the clamping grooves.

[0012] According to some embodiments of the present invention, the fixing ring and the main body are provided separately, and the fixing ring abuts against the main body.

[0013] According to some embodiments of the present invention, the outer side wall of the body is provided with a protrusion protruding outward, and the first port is provided at the protrusion.

[0014] According to some embodiments of the present invention, the expansion tube and the body are manufactured in an integrally formed manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a wire-fixed bone plate fixing the jaw according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a wire-fixed bone plate according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of another angle of a wire-fixed bone fracture plate according to an embodiment of the present invention; Figure 4 is an exploded schematic diagram of a wire-fixed bone plate according to an embodiment of the present invention; Figure 5 The present invention is a cross-sectional schematic diagram of a wire-fixed bone plate according to an embodiment of the present invention.

[0016] Figure numerals: main body 100, threading hole 110, first port 111, second port 112, protrusion 120, expansion tube 200, inner hole 210, annular groove 220, tie wire 300, first clamping structure 310, clamping block 311, cylinder 320, expansion piece 400, through hole 410, fixing ring 500, fixing hole 510, second clamping structure 511, clamping groove 512. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as front, rear, top, bottom, axial, and circumferential are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0020] In the description of the present invention, it should be noted that the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0022] In the existing technology, as 3D printing technology becomes more and more mature, 3D printing products are increasingly being used in various industries. The surface of parts processed by additive manufacturing is usually rougher than that of traditional manufacturing, and in fatigue testing, fatigue fractures usually occur at locations where there are surface defects. At present, the contours of orthopedic internal fixation plates are mostly provided with nail holes and corners, which are structures that are prone to stress concentration. Usually, the location of product fatigue fracture occurs at the nail holes and corners of the bone plate.

[0023] The existing standard fatigue test of bone plates refers to "YYT 1503-2016 Surgical Implant Metal Plate Bending Fatigue Performance Test Method", and a large amount of four-point bending fatigue test data is studied. The fatigue fracture positions of bone plates with different structures are most likely to occur at the nail holes and corners of the bone plates, and the fatigue fracture positions are all on the tensile surface of the bone plates. From the perspective of 3D printing bone plates, if there are no nail holes and corners on the tensile surface of the bone plates, the fatigue mechanical properties of the bone plates will be greatly improved.

[0024] In the known existing bone plate systems using expansion screws, the principle is to use expansion screws instead of bone screws to fix the bone plates. In these solutions, the screw rod of the expansion screw needs to pass through the nail hole on the bone plate body, so the outer diameter of the screw rod also determines the diameter of the nail hole on the bone plate, and the diameter of the nail hole will inevitably affect the structural strength of the bone plate.

[0025] During the operation, there are several steps such as drilling, depth measurement, tapping, cleaning the screw channel, fixing the bone plate, and screwing the screws. Each step will affect the subsequent fixation accuracy and stability of the internal fixation system. These steps are not only cumbersome but also necessary. The error tolerance of drilling and tapping is low. Once an error is made, the screw diameter needs to be changed or even the screw placement plan needs to be re-planned. Moreover, the more steps there are, the more detailed the operation will be, and the longer the operation time will be, which will lead to infection in the patient.

[0026] The conventional design of orthopedic internal fixation plates is generally to design nail holes on the surface of the plate, and to fasten the plate to the bone by passing screws or other fixing devices through the plate and inserting them into the bone. Although in most cases, the internal fixation system of the plate and screws is efficient and reliable, there is a risk of loosening, falling off, or even separation of the plate from the bone under high-frequency external loads. Especially in some parts that need to consider both the structural strength of the plate and the size of the plate, such as the cranio-maxillofacial plate, coupled with the complexity of the cranio-maxillofacial internal fixation surgical plan and the difference in bite force of different patients, the plate structure designers have to increase the size of the plate and reduce the appearance requirements of doctors and patients for the plate products to meet the clinical biomechanical strength requirements.

[0027] The plate body of the bone plate is usually reinforced with a circular ring structure at the nail hole. The introduction of the circular ring causes corners to appear on the side of the plate body, and the nail hole of the bone plate is often the weakest part of the structure. The structural dimensions of bone plates with different functions on the market are similar, but in four-point bending fatigue tests and clinical bone plate fracture cases, the nail hole of the bone plate is still the location with the highest risk of fracture.

[0028] During internal fixation surgery, drilling, tapping, and screwing are essential steps that take up a lot of time. Long surgery times can lead to infection in patients. For internal fixation of multiple bone segments, other fixation devices such as Kirschner wires are needed to assist in the fixation of the bone plate and bone, which is cumbersome to operate. The existing bone plate and expansion screw system is extremely cumbersome to disassemble. Due to the small size of the tightening screw, it is easy to slip during the disassembly process, which brings great uncertainty to the disassembly of the bone plate and is likely to cause secondary damage to the patient's bones.

[0029] To this end, the present invention proposes a wire-fixed bone plate, which makes the disassembly of the bone plate more convenient and avoids secondary damage to the patient's bones caused by the disassembly of the bone plate.

[0030] Reference Figures 1 to 5 As shown, the wire-fixed bone plate of the present invention is made into the following embodiments.

[0031] The wire-fixed bone plate comprises a body 100 , an expansion tube 200 , a wire 300 , an expansion piece 400 , and a fixing ring 500 .

[0032] The main body 100 is provided with a threading hole 110 , which passes through the main body 100 . The two ends of the threading hole 110 are respectively a first port 111 and a second port 112 . The expansion tube 200 is arranged outside the main body 100 . The expansion tube 200 is provided with an inner hole 210 , which is connected to the second port 112 .

[0033] The tie wire 300 is passed through the threading hole 110 and the inner hole 210. The tie wire 300 has a first end and a second end. The first end passes through the first port 111 of the threading hole 110 and extends to the outside of the body 100. The second end passes through the second port 112 of the threading hole 110 and the inner hole 210 and then extends to the outside of the body 100.

[0034] The expansion piece 400 is connected to the second end of the tie wire 300 . The outer diameter of the expansion piece 400 is larger than the diameter of the inner hole 210 , so that the expansion piece 400 can be inserted into the inner hole 210 to expand the expansion tube 200 .

[0035] The fixing ring 500 is provided with a fixing hole 510, and the fixing hole 510 is sleeved on the first end of the tie wire 300. The fixing ring 500 is located outside the first port 111 of the threading hole 110. The outer wall of the tie wire 300 is provided with a first clamping structure 310, and the inner wall of the fixing hole 510 is provided with a second clamping structure 511. The first clamping structure 310 cooperates with the second clamping structure 511, and the fixing ring 500 abuts against the outer wall of the main body 100, thereby limiting the freedom of the first end of the tie wire 300 to move toward the second port 112.

[0036] The second end of the tie wire 300 moves toward the first port 111 so that the tie wire 300 drives the expansion piece 400 to be inserted into the inner hole 210 of the expansion tube 200. The outer diameter of the expansion piece 400 is larger than the aperture of the inner hole 210, so that the expansion piece 400 can open the expansion tube 200 and expand the expansion tube 200 outward.

[0037] When installing the bone plate, the tie wire 300 is passed through the threading hole 110 of the body 100 and the inner hole 210 of the expansion tube 200, so that the second end of the tie wire 300 extends from the second port 112 and connects to the expansion piece 400, and then the first end of the tie wire 300 extends from the first port 111 and passes through the fixing hole 510 of the fixing ring 500.

[0038] Then, the expansion piece 400 and the expansion tube 200 are placed into the hole reserved in the patient's bone, and the tie wire 300 is pulled from the first port 111 so that the tie wire 300 drives the expansion piece 400 to move toward the second port 112, thereby inserting the expansion piece 400 into the inner hole 210 of the expansion tube 200 and stretching the expansion tube 200, so that the outer wall of the expansion tube 200 that expands outward abuts against the inner wall of the hole reserved in the patient's bone, and the second clamping structure 511 of the fixing ring 500 cooperates with the first clamping structure 310 of the tie wire 300 to prevent the tie wire 300 from sliding from the first port 111 to the second port 112, thereby keeping the expansion tube 200 expanded and fixed in the hole reserved in the patient's bone, thereby completing the fixation of the bone plate.

[0039] When the bone plate needs to be removed, the tie wire 300 is cut off from the gap between the fixing ring 500 and the main body 100, so that the first end of the tie wire 300 located at the first port 111 loses its constraint, and then the bone plate can be pulled to move the expansion tube 200 in the direction of separating from the reserved hole in the patient's bone, so that the inner wall of the reserved hole in the patient's bone compresses the expansion tube 200 and pushes the expansion piece 400 to separate from the inner hole 210, so that the expansion tube 200 returns to its original state, and then the expansion tube 200 can be separated from the reserved hole in the patient's bone, making the removal of the bone plate more convenient and avoiding secondary damage to the patient's bones caused by the removal of the bone plate.

[0040] In some embodiments, the body 100 is arranged in the horizontal direction, the expansion tube 200 and the second port 112 are arranged on the rear side wall of the body 100 , and the first port 111 is arranged on the upper side wall, the lower side wall, the left side wall or the right side wall of the body 100 .

[0041] The first port 111 and the second port 112 of the threading hole 110 are not in a straight line. After the expansion tube 200 on the rear wall of the main body 100 is inserted into the reserved hole in the patient's bone, when the tie wire 300 is pulled from the upper wall, the lower wall, the left wall or the right wall, the expansion tube 200 and the pulling direction of the tie wire 300 are not in the same straight line, so as to avoid the expansion tube 200 from being separated from the reserved hole in the bone during the pulling process of the tie wire 300; and the tie wire 300 moves from the rear wall to the upper wall, the lower wall, the left wall or the right wall, so as to avoid the tie wire 300 from applying pressure in the front-to-back direction on the main body 100 after being fixed by the fixing ring 500, thereby preventing the tension surface of the main body 100 from being damaged due to excessive pressure.

[0042] In some embodiments, the expansion tube 200, the tie wire 300, the expansion piece 400, and the fixing ring 500 are all made of titanium alloy material.

[0043] Titanium alloy has good compatibility with human tissues, does not cause immune response, and is stronger than ordinary steel. It also has good toughness and fatigue resistance.

[0044] In some embodiments, the outer side wall of the expansion tube 200 is provided with a plurality of annular grooves 220 spaced apart in the axial direction, and each annular groove 220 surrounds the outer circumference of the expansion tube 200 .

[0045] The multiple annular grooves 220 are provided to make the contact surface between the expansion tube 200 and the reserved hole in the patient's bone more tortuous, which helps to improve the retention ability between the expansion tube 200 and the reserved hole in the patient's bone.

[0046] In some embodiments, a cylinder 320 is disposed at the second end of the tie wire 300 , and a through hole 410 is disposed at the expander 400 . The tie wire 300 passes through the through hole 410 . The outer diameter of the cylinder 320 is larger than the aperture of the through hole 410 , and the cylinder 320 is used to abut against the expander 400 .

[0047] The tie wire 300 abuts against the expansion member 400 through the cylinder 320 at the second end, so that the first end of the tie wire 300 is pulled to make the cylinder 320 drive the expansion member 400 to be inserted into the inner hole 210 of the expansion tube 200 .

[0048] In some embodiments, the outer diameter of the expansion piece 400 gradually increases from front to back, and the front end of the expansion piece 400 faces the inner hole 210 of the expansion tube 200 .

[0049] The expander 400 has a conical shape. When the expander 400 is inserted into the inner hole 210 of the expansion tube 200, the expander 400 gradually expands the expansion tube 200, so that the ligature 300 can be pulled forward more smoothly. When removing the bone plate, since the expander 400 has a conical shape, when the main body 100 is pulled forward, the expansion tube 200 squeezes the expander 400 and guides the conical expander 400 to slide backward, so that the expansion tube 200 can be more smoothly removed from the reserved hole in the patient's bone.

[0050] In some embodiments, reference Figure 5 As shown, the first clamping structure 310 is provided with a plurality of clamping blocks 311, and the plurality of clamping blocks 311 are arranged in sequence along the length direction of the tie wire 300, and the second clamping structure 511 is provided with a plurality of clamping grooves 512, and the plurality of clamping grooves 512 are arranged in sequence along the axial direction of the fixing hole 510, and the clamping blocks 311 cooperate with the clamping grooves 512.

[0051] When the first end of the tie wire 300 is pulled to move the tie wire 300 from the second port 112 to the first port 111 , the plurality of clamping blocks 311 of the tie wire 300 cooperate with the plurality of clamping grooves 512 of the fixing ring 500 to ensure that the tie wire 300 does not move in the reverse direction and cause the expansion member 400 to loosen.

[0052] In some embodiments, the fixing ring 500 and the body 100 are provided separately.

[0053] The tie wire 300 can be cut through the gap between the fixing ring 500 and the body 100 , and the fixing ring 500 can be detached from the body 100 to loosen the tie wire 300 , so that the expansion member 400 loses the restraint of the tie wire 300 .

[0054] In some embodiments, a protrusion 120 protruding downward is disposed at the bottom of the body 100 , and the first port 111 is disposed at the position of the protrusion 120 .

[0055] The protrusion 120 is used to increase the thickness of the body 100 around the first port 111 , thereby improving the structural strength of the first port 111 and preventing the body 100 from being damaged due to the fixing ring 500 squeezing the surrounding area of ​​the first port 111 .

[0056] In some embodiments, the expansion tube 200 and the body are manufactured in an integrally formed manner.

[0057] The expansion tube 200 is integrated with the main body 100, which can fundamentally solve the problem of loosening of the expansion tube 200 and improve the anti-pullout capability of the bone plate relative to the patient's bone.

[0058] The specific implementation process of the present invention is as follows: During the operation, first use 2 to 3 Kirschner needles to fix the osteotomy guide plate, and with the assistance of the osteotomy guide plate, complete the drilling of the holes in the first part and the second part of the patient's mandible in turn, and then use a special conical drill to expand the inner hole in a conical manner. The depth of the hole drilling in the above steps needs to be greater than the total length of the expansion tube 200 and the expansion piece 400, leaving a certain amount of residual bone powder left by the drilling. The depth of the conical drill bit drill for the inner hole in the above steps is implemented accordingly according to the specifications of the expansion tube 200.

[0059] The personalized designed bone fracture plate body 100 is assembled with components such as the tie wire 300. The first end of the tie wire 300 is inserted into the through hole 410 of the expansion piece 400, the inner hole 210 of the expansion tube 200 and the second port 112 of the threading hole 110. The first end of the tie wire 300 is passed out from the first port 111 at the bottom of the body 100. The second end of the tie wire 300 and the expansion piece 400 are inserted into the inner hole 210 of the expansion tube 200 together. The installed expansion tube 200 is aligned with the hole drilled in the patient's jaw, and the first part of the mandible and the second part of the mandible are fixed in turn. The outer diameter of the expansion tube 200 in the above steps is clearance-matched with the diameter of the drilled hole to ensure that a certain positioning error margin is left.

[0060] The fixing hole 510 of the fixing ring 500 is sleeved on the first end of the tie wire 300, and the fixing ring 500 is fixed by using a special pulling and pressing device, and then the first end of the tie wire 300 is pulled forward until the tie wire 300 can no longer be pulled out. When locking, a pulling force is continuously applied to the tie wire 300, so that the expansion piece 400 opens the expansion tube 200 and is fixed in the hole. The fixing ring 500 cooperates with the tie wire 300 to lock the tie wire 300 and maintain the expansion state of the expansion tube 200. Finally, pliers are used to cut off the first end of the extended tie wire 300.

[0061] The disassembly process of the present invention is as follows: saw off the tie wire 300 through the gap between the fixing ring 500 and the tie wire 300 at the bottom of the body, separate the fixing ring 500 from the body 100, and the expansion tube 200 is no longer stretched outward by the expansion piece 400. All the tie wires 300 are sawed off in sequence according to the same operation, and then the body 100 is pulled to drive the expansion tube 200 to be pulled out of the hole. For personalized bone plates with complex pre-bending angles, the axial directions of all expansion tubes 200 can be designed to be consistent at the beginning of the design to facilitate disassembly.

[0062] In response to the mechanical design requirements of the craniomaxillofacial plate, the outer surface of the plate body 100 is designed without nail holes, and the surface of the plate that is subjected to tensile stress in clinical practice is designed without corner structures. From the perspective of theoretical mechanics and 3D printing manufacturing technology, the fatigue performance of the plate is greatly improved.

[0063] Compared with the screw fixation method, the internal fixation method of using the tie wire 300 and the expansion tube 200 to be implanted in the patient's bone reserved hole eliminates the steps of tapping the reserved hole, cleaning the screw channel and screwing the screw. It only needs to complete the locking of each tie wire 300 to replace the above steps, which greatly reduces the patient's surgical exposure time and improves the doctor's clinical surgical efficiency. During the disassembly process, the bone plate can be pulled out by simply sawing off the tie wire 300. Not only is the internal fixation operation simple, but the disassembly work is also extremely simple.

[0064] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A wire-fixed bone plate, characterized in that: include: The body is provided with a through threading hole, wherein the threading hole is provided with a first port and a second port; An expansion pipe, arranged on the body, the expansion pipe is provided with a through inner hole, and the inner hole is communicated with the second port; A tie wire passes through the threading hole and the inner hole, and the outer side wall of the tie wire is provided with a first clamping structure; An expansion piece, provided on the tie wire, wherein the outer diameter of the expansion piece is larger than the diameter of the inner hole; A fixing ring, provided with a fixing hole, wherein the fixing hole is sleeved on the outside of the binding wire, and the inner side wall of the fixing hole is provided with a second clamping structure; The movement of the tie wire from the second port to the first port drives the expansion member to push the expansion tube to expand outward, and the second clamping structure cooperates with the first clamping structure to limit the freedom of movement of the tie wire from the first port to the second port.

2. The wire-fixed bone plate according to claim 1, characterized in that: Taking the position of the expansion tube relative to the body as a relative rear direction, the second port is located at the rear side of the body, and the first port is located at the upper side, the lower side, the left side or the right side of the body.

3. The wire-fixed bone plate according to claim 1, characterized in that: The expansion tube, the tie wire, the expansion piece and the fixing ring are all made of titanium alloy material.

4. The wire-fixed bone plate according to claim 1, characterized in that: The outer side wall of the expansion tube is provided with a plurality of annular grooves, and the annular grooves surround the circumference of the expansion tube.

5. The wire-fixed bone plate according to claim 1, characterized in that: A cylinder is arranged at the end of the tie wire, and the expansion piece is provided with a through hole, the through hole is sleeved on the outside of the tie wire, and the cylinder abuts against the expansion piece.

6. The wire-fixed bone plate according to claim 1, characterized in that: The outer diameter of the expansion piece gradually increases from a side close to the expansion tube to a direction away from the expansion tube.

7. The wire-fixed bone plate according to claim 1, characterized in that: The first clamping structure includes a plurality of clamping blocks, which are spaced apart along the length direction of the binding wire; the second clamping structure includes a plurality of clamping grooves, which are spaced apart along the axial direction of the fixing hole; and the clamping block cooperates with any one of the clamping grooves.

8. The wire-fixed bone plate according to claim 1, characterized in that: The fixing ring is separately arranged from the main body, and the fixing ring abuts against the main body.

9. The wire-fixed bone plate according to claim 1, characterized in that: The outer side wall of the body is provided with a protrusion protruding outward, and the first port is arranged at the protrusion.

10. The wire-fixed bone plate according to claim 1, characterized in that: The expansion tube and the body are manufactured in an integrally formed manner.

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