A fixation structure for repairing bone defects

Abstract

The present invention discloses a fixing structure for repairing bone defects, which belongs to the technical field of medical devices. The fixing frame and the adjusting frame are connected by an adjusting assembly. The adjusting assembly is used to adjust the distance between the fixing frame and the adjusting frame. The fixing assembly is provided on the fixing frame and the adjusting frame, and the fixing assembly is used to fix the bone. The bracket can be fixed by the relatively arranged fixing assemblies. After the bracket is fixed, the bone can be tied with a fixing rope to fix the bone. The coordinated fixation of the fixing rope and the fixing assembly reduces the coverage of the bone, reduces the hindrance to the growth of bones and muscles, and improves the patient's recovery speed. The fixing assembly fixes the bracket by the relative squeezing of the fixing cone, and there is no need to open a hole in the bone, which reduces secondary damage to the bone.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a fixing structure for repairing bone defects. Background Art

[0002] External fixators have now become the preferred method for corresponding orthopedic surgical treatments. Orthopedic fixation technology connects adjacent bone segments or limbs through percutaneous puncture and extracorporeal connectors, and achieves stable fixation after basic anatomical reduction of the fracture ends, providing the required biomechanical environment for fracture healing and meeting the patient's functional recovery and exercise needs. It is a good orthopedic surgical treatment technology.

[0003] When repairing and fixing bone defects, it is generally necessary to fix the damaged area and also to fill the defective area. The current incomplete methods include autologous bone transplantation or repair with artificial bone materials. However, whether it is autologous bone transplantation or repair with artificial bone materials, a bracket is required for fixation. The current fixation method is mostly to place a steel plate on the surface of the bone and then use screws to fix the steel plate to the bone. However, the screws will cause damage to the bone, and the steel plate will also hinder the growth of bones and muscles, resulting in slower recovery.

[0004] Therefore, we need to design a fixation structure for bone defect repair to solve these problems. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a fixation structure for repairing bone defects, which is used to fix the bone defects after repair.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A fixing structure for repairing bone defects includes a fixing frame and an adjusting frame. The fixing frame and the adjusting frame are connected via an adjusting assembly. The adjusting assembly is used to adjust the distance between the fixing frame and the adjusting frame. Fixing assemblies are provided on the fixing frame and the adjusting frame. The fixing assemblies are used to fix the bones.

[0008] Preferably, the fixing frame includes a mounting ring and a first fixing ring, the mounting ring and the first fixing ring are fixedly connected by a plurality of connecting pipes, the adjusting frame includes a connecting ring and a second fixing ring, the connecting ring and the second fixing ring are fixedly connected by a plurality of connecting rods, and at least two fixing components are provided on the mounting ring, the connecting ring, the first fixing ring and the second fixing ring, and the two fixing components are coaxial and the output ends are opposite.

[0009] Such arrangement facilitates fixation and adjustment.

[0010] Preferably, the adjustment assembly includes a worm gear ring and a rack, the worm gear ring is coaxially arranged on the inner side of the mounting ring and rotatably embedded in the inner wall of the mounting ring, the rack is fixedly arranged on the connecting ring, the free end of the rack passes through the mounting ring, and the rack is engaged with the worm gear ring.

[0011] With this arrangement, the distance between the fixing frame and the adjusting frame can be adjusted.

[0012] The lock hole is formed on the top of the fixing tube and the fixing tube is fixed with a fixing cone, and the fixing cone has a placement hole and a rope hole along the axial direction of the fixing tube. The rope hole passes through the fixing tube and the fixing cone in sequence. A fixing rope is inserted into the rope hole. One end of the fixing rope is connected to the locking block, and the other end of the fixing rope is connected to the locking block in the opposite fixing tube. A sliding rail is further provided on the inner wall of the fixing tube, and a sliding groove is provided on the locking block and the side wall of the telescopic rod. The slide groove and the slide rail cooperate with each other, and a telescopic nut is rotatably provided at one end of the fixing tube, and the telescopic nut is sleeved on the outer side of the telescopic rod and cooperates with the telescopic rod through a thread. The other end of the fixing tube is rotatably provided with a locking nut, and a threaded rod is fixed on the locking nut, and the free end of the threaded rod passes through the locking block and extends into the placement hole.

[0013] Such arrangement can cooperate with each other to achieve fixation of the damaged part.

[0014] Preferably, the two axes of the fixing components on the mounting ring are perpendicular to the two axes of the fixing components on the first fixing ring, the two axes of the fixing components on the connecting ring are perpendicular to the two axes of the fixing components on the second fixing ring, and the two axes of the fixing components on the mounting ring are perpendicular to the two axes of the fixing components on the connecting ring.

[0015] Such setting ensures stability after fixation.

[0016] Preferably, a plurality of anti-slip grooves are provided on the inner wall of the worm gear ring, a plurality of fixing holes are provided on the worm gear ring, and a fixing knob is provided on the mounting ring. The fixing knob is connected to the mounting ring through a thread. When the fixing knob moves down to the extreme position, the bottom of the fixing knob will be inserted into one of the fixing holes.

[0017] With such arrangement, the fixing hole and the fixing knob can limit the worm gear ring, and the anti-slip groove can increase the friction force to ensure the rotation of the worm gear ring.

[0018] Preferably, the number of the connecting tubes, the connecting rods and the racks is at least three respectively, and the installation positions of the three racks are respectively opposite to the installation positions of the three connecting tubes, and when the rack passes through the mounting ring, the end is inserted into the connecting tube.

[0019] Such an arrangement can protect the rack.

[0020] Preferably, a scale is provided on the rack.

[0021] This arrangement enables precise control of the adjustment distance.

[0022] The advantages and positive effects of the present invention are:

[0023] The present invention can fix the bracket through relatively arranged fixing components. After the bracket is fixed, the fixing rope can be used to bind the bones and fix the bones. The coordinated fixation of the fixing rope and the fixing component reduces the coverage of the bones, reduces the obstruction to the growth of bones and muscles, and improves the patient's recovery speed. The fixing component fixes the bracket through the relative squeezing of the fixing cone, and there is no need to open holes in the bones, which reduces secondary damage to the bones.

[0024] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a schematic axonometric diagram of the overall structure of a fixation structure for repairing bone defects according to the present invention;

[0027] Figure 2 is a schematic longitudinal section of a fixation structure for repairing bone defects according to the present invention;

[0028] Figure 3 This is a schematic diagram of the meshing of a worm gear ring and a rack in a fixed structure for repairing bone defects according to the present invention;

[0029] Figure 4 It is along Figure 2 Schematic diagram of the horizontal section at Ⅰ-Ⅰ in FIG;

[0030] Figure 5 yes Figure 2A magnified view of the structure at point A;

[0031] Figure 6 yes Figure 3 A magnified view of the structure at point B in FIG;

[0032] Figure 7 yes Figure 4 A magnified view of the structure at point C in FIG;

[0033] Figure 8 It is a structural schematic diagram of a worm gear ring of a fixed structure for repairing bone defects according to the present invention.

[0034] Figure markings: 1-fixing frame; 2-adjusting frame; 3-first fixing ring; 4-connecting pipe; 5-mounting ring; 6-worm gear ring; 7-rack; 8-connecting ring; 9-fixing device; 901-fixing pipe; 902-telescopic nut; 903-telescopic rod; 904-slide groove; 905-fixing cone; 906-fixing rope; 907-rope hole; 908-slide rail; 909-locking block; 910-locking nut; 911-threaded rod; 912-placement hole; 10-anti-slip groove; 11-fixing hole; 12-fixing knob; 13-second fixing ring; 14-connecting rod. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0036] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0037] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] See also Figures 1 to 8 , which is a fixed structure for repairing bone defects, including a fixing frame 1 and an adjusting frame 2. The fixing frame 1 and the adjusting frame 2 are connected by an adjusting component. The adjusting component is used to adjust the distance between the fixing frame 1 and the adjusting frame 2. Fixing components are provided on the fixing frame 1 and the adjusting frame 2, and the fixing components are used to fix the bones.

[0039] Specifically, the fixing frame 1 includes a mounting ring 5 and a first fixing ring 3, and the mounting ring 5 is fixedly connected to the first fixing ring 3 through a number of connecting tubes 4. The adjusting frame 2 includes a connecting ring 8 and a second fixing ring 13, and the connecting ring 8 and the second fixing ring 13 are fixedly connected through a number of connecting rods 14. At least two fixing components are provided on the mounting ring 5, the connecting ring 8, the first fixing ring 3 and the second fixing ring 13. The two fixing components are coaxial and the output ends are opposite, so that the arrangement is convenient for fixation and adjustment.

[0040] Specifically, the adjustment assembly includes a worm gear ring 6 and a rack 7. The worm gear ring 6 is coaxially arranged on the inner side of the mounting ring 5 and rotatably embedded in the inner wall of the mounting ring 5. The rack 7 is fixedly arranged on the connecting ring 8. The free end of the rack 7 passes through the mounting ring 5, and the rack 7 is engaged with the worm gear ring 6. This arrangement realizes the adjustment of the distance between the fixed frame 1 and the adjustment frame 2.

[0041] Specifically, the fixing assembly includes a fixing tube 901, a locking block 909 and a telescopic rod 903 are further provided in the fixing tube 901, and a fixing cone 905 is provided after one end of the telescopic rod 903 extends from the end of the fixing tube 901 located on the inner side of the fixing ring. The other end of the telescopic rod 903 is provided with a placement hole 912 and a rope hole 907 along the axial direction of the telescopic rod 903. The rope hole 907 sequentially passes through the telescopic rod 903 and the fixing cone 905. A fixing rope 906 is inserted into the rope hole 907. One end of the fixing rope 906 is connected to the locking block 909, and the other end of the fixing rope 906 is connected to the locking block 909 in the opposite fixing tube 901. A slide rail 908 is also provided on the inner wall of the fixed tube 901, and a slide groove 904 is provided on the side walls of the locking block 909 and the telescopic rod 903. The slide groove 904 cooperates with the slide rail 908. A telescopic nut 902 is rotatably provided at one end of the fixed tube 901. The telescopic nut 902 is mounted on the outside of the telescopic rod 903 and cooperates with the telescopic rod 903 through threads. A locking nut 910 is rotatably provided at the other end of the fixed tube 901. A threaded rod 911 is fixed on the locking nut 910. The free end of the threaded rod 911 passes through the locking block 909 and extends into the placement hole 912. Such an arrangement can cooperate with each other to fix the damaged part.

[0042] Specifically, the axes of the two fixing components on the mounting ring 5 are perpendicular to the axes of the two fixing components on the first fixing ring 3, the axes of the two fixing components on the connecting ring 8 are perpendicular to the axes of the two fixing components on the second fixing ring 13, and the axes of the two fixing components on the mounting ring 5 are perpendicular to the axes of the two fixing components on the connecting ring 8. This arrangement ensures stability after fixation.

[0043] Furthermore, a number of anti-slip grooves 10904 are provided on the inner wall of the worm gear ring 6, a number of fixing holes 11 are also provided on the worm gear ring 6, and a fixing knob 12 is also provided on the mounting ring 5. The fixing knob 12 is connected to the mounting ring 5 by a thread. When the fixing knob 12 moves down to the extreme position, the bottom of the fixing knob 12 will be inserted into one of the fixing holes 11. The setting of the fixing holes 11 and the fixing knob 12 in this way can limit the worm gear ring 6, and the anti-slip grooves 10904 can increase friction to ensure the rotation of the worm gear ring 6.

[0044] Furthermore, the number of connecting tubes 4, connecting rods 14 and racks 7 is at least three respectively, and the installation positions of the three racks 7 are respectively opposite to the installation positions of the three connecting tubes 4. When the rack 7 passes through the mounting ring 5, the end is inserted into the connecting tube 4. Such an arrangement can protect the rack 7.

[0045] Furthermore, a scale is provided on the rack 7, so that the adjustment distance can be precisely controlled.

[0046] Working process of this embodiment: This device is mainly used for postoperative fixation of leg and arm bone defects. When in use, first put the fixing frame 1 and the adjusting frame 2 on the outside of the damaged part. When the operation is completed and fixation is required, first disassemble one of the relatively arranged fixing components in each group, and remove the telescopic rod 903 from the fixing tube 901 by rotating the telescopic nut 902. Then, rotate the locking nut 910, and the locking block 909 can be driven to move in the fixing tube 901 through the threaded rod 911. Since the telescopic rod 903 is removed, when the locking block 909 is separated from the threaded rod 911, the fixing rope 90 6 The locking block 909 in the fixed tube 901 can be pulled out. When the locking block 909 is pulled out, the remaining fixed end is removed, passed around the bone and then installed on the locking block 909 again. Then, the locking block 909 is installed back into the fixed tube 901, and the telescopic rod 903 is fitted with the telescopic nut 902. Then, the telescopic nut 902 is retracted to drive the telescopic rod 903 into the fixed tube 901. After the telescopic rod 903 enters the fixed tube 901, it pushes the locking block 909 to move. When the locking block 909 stops moving, the threaded rod 911 is fitted with the locking block 909. At this time, the locking block 909 can be tightened by rotating the locking nut 910 in the opposite direction. 9 is connected to the threaded rod 911, and then the medical staff adjusts the position of the two relatively set fixing components, and then rotates the upper telescopic nuts 902 of the two fixing components respectively to make the telescopic rods 903 on the two fixing components move relative to each other. When the fixing cones 905 on the two telescopic rods 903 are in contact with the bones and pressed tightly, the locking nuts 910 on the two fixing components are rotated. The fixing position can be adjusted according to the length of the different telescopic rods 903 extending from the fixing tube 901, so that the two locking blocks move toward each other, and the fixing rope 906 is tightened to complete the binding and fixation of the bones. When all the fixing components are in contact with the bones, the fixing cones 905 on the two telescopic rods 903 are in contact with the bones and pressed tightly. After the fixation is completed, the fixing frame 1 and the adjusting frame 2 will be fixed together with the bones. Since the distance between the defect positions needs to be adjusted during the repair of bone defects, the medical staff needs to reversely rotate the fixing knob 12 to move the fixing knob 12 upward, and pull the lower end of the fixing knob 12 out of the fixing hole 11, and then rotate the worm ring 6 through the anti-slip groove 10904, and use the turbine ring to drive the meshing rack 7 to move, so as to adjust the distance between the fixing frame 1 and the adjusting frame 2. The adjusted length can be confirmed according to the scale on the rack 7, and can be adjusted according to the actual situation of the patient to reduce the sequelae after recovery.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A fixation structure for repairing bone defects, characterized by: The invention comprises a fixing frame (1) and an adjusting frame (2), wherein the fixing frame (1) and the adjusting frame (2) are connected via an adjusting component, wherein the adjusting component is used to adjust the distance between the fixing frame (1) and the adjusting frame (2), and a fixing component is provided on the fixing frame (1) and the adjusting frame (2), wherein the fixing component is used to fix the bone; The fixing frame (1) comprises a mounting ring (5) and a first fixing ring (3), wherein the mounting ring (5) and the first fixing ring (3) are fixedly connected via a plurality of connecting tubes (4); the adjusting frame (2) comprises a connecting ring (8) and a second fixing ring (13), wherein the connecting ring (8) and the second fixing ring (13) are fixedly connected via a plurality of connecting rods (14); at least two fixing components are provided on each of the mounting ring (5), the connecting ring (8), the first fixing ring (3) and the second fixing ring (13), wherein the two fixing components are coaxial and have output ends facing each other; The fixing assembly includes a fixing tube (901), wherein a locking block (909) and a telescopic rod (903) are further provided in the fixing tube (901), and one end of the telescopic rod (903) is extended from the end of the fixing tube (901) located on the inner side of the fixing ring and is provided with a fixing cone (905), and the other end of the telescopic rod (903) is provided with a placement hole (912) and a rope hole (907) along the axial direction of the telescopic rod (903), and the rope hole (907) passes through the telescopic rod (903) and the fixing cone (905) in sequence, and a fixing rope (906) is passed through the rope hole (907), and one end of the fixing rope (906) is connected to the locking block (909), and the other end of the fixing rope (906) is connected to the locking block (909) in the opposite fixing tube (901), and two fixing ropes (906) are provided to achieve bone fixation. Binding; a slide rail (908) is also provided on the inner wall of the fixed tube (901), and a slide groove (904) is provided on the side wall of the locking block (909) and the telescopic rod (903), and the slide groove (904) and the slide rail (908) cooperate with each other. A telescopic nut (902) is rotatably provided on one end of the fixed tube (901), and the telescopic nut (902) is sleeved on the outside of the telescopic rod (903) and cooperates with the telescopic rod (903) through a thread. A locking nut (910) is rotatably provided on the other end of the fixed tube (901), and a threaded rod (911) is fixedly provided on the locking nut (910), and the free end of the threaded rod (911) passes through the locking block (909) and extends into the placement hole (912); by rotating the locking nuts (910) on the two fixing components, the two locking blocks are moved toward each other.

2. A fixation structure for repairing bone defects according to claim 1, characterized in that: The adjustment assembly includes a worm gear ring (6) and a rack (7). The worm gear ring (6) is coaxially arranged on the inner side of the mounting ring (5) and is rotatably embedded in the inner wall of the mounting ring (5). The rack (7) is fixedly arranged on the connecting ring (8). The free end of the rack (7) passes through the mounting ring (5), and the rack (7) is meshed with the worm gear ring (6).

3. The fixation structure for repairing bone defects according to claim 1, characterized in that: The two axes of the fixing components on the mounting ring (5) are perpendicular to the two axes of the fixing components on the first fixing ring (3), the two axes of the fixing components on the connecting ring (8) are perpendicular to the two axes of the fixing components on the second fixing ring (13), and the two axes of the fixing components on the mounting ring (5) are perpendicular to the two axes of the fixing components on the connecting ring (8).

4. The fixation structure for repairing bone defects according to claim 2, characterized in that: A plurality of anti-slip grooves (10) are provided on the inner wall of the worm gear ring (6), a plurality of fixing holes (11) are also provided on the worm gear ring (6), and a fixing knob (12) is also provided on the mounting ring (5). The fixing knob (12) is connected to the mounting ring (5) through a thread, and when the fixing knob (12) moves downward to an extreme position, the bottom of the fixing knob (12) is inserted into one of the fixing holes (11).

5. The fixation structure for repairing bone defects according to claim 2, characterized in that: The number of the connecting tube (4), the connecting rod (14) and the rack (7) is at least three respectively, and the installation positions of the three racks (7) are respectively opposite to the installation positions of the three connecting tubes (4), and when the rack (7) passes through the mounting ring (5), the end portion is inserted into the connecting tube (4).

6. The fixation structure for repairing bone defects according to claim 2, characterized in that: A scale is provided on the rack (7).

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