Clamping block assembly and child bone carrying and multifunctional orthopedic device formed by clamping block assembly

Abstract

The invention discloses a clamping block assembly and a child bone carrying and multifunctional orthopedic device formed by the clamping block assembly, the clamping block assembly comprises a clamping part and a fixing part meshed with teeth of the clamping part, the clamping part and the fixing part are fixed through a locking piece after being meshed, the fixing part comprises a clamping seat fixedly connected with the clamping part and a clamping plate fixedly connected with the clamping seat, and the clamping plate is fixedly connected with the clamping part. And a mounting hole is formed between the clamping plate and the clamping seat. The ulna and radius bone moving device comprises a main rod, clamping block assemblies and bone needles / semi-rings, the three clamping block assemblies are installed on the main rod, the bone needles are installed on the clamping block assemblies respectively, the clamping block assemblies at the two ends of the main rod are the clamping block assembly A and the clamping block assembly B, and the clamping block assembly in the middle is the clamping block assembly C; the main rod is further provided with a moving assembly capable of enabling the clamping block assembly C to move left and right. The clamping block assembly A and the clamping block assembly B fix the ulna and radius bone moving device to a bone through a bone needle, and the clamping block assembly C is fixed to the bone to be moved through a bone needle. According to the invention, the adjustability of the moving distance and direction can be automatically realized, the moving accuracy is improved, the moving distance and direction can be remotely controlled, the control accuracy is high, and the error is small.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a clamping block assembly and a children's bone transport and multifunctional orthopedic device composed of the clamping block assembly. Background Art

[0002] The radius and ulna are the two main bones of the forearm, with the ulna located on the inside (little finger side) and the radius on the outside (thumb side). These two bones play a vital role in the function of the forearm, including support, rotation, and strength. Congenital or traumatic developmental deformities of the forearm in children (e.g., Madelung deformity, congenital dislocation of the radial head, forearm diaphysis continuation, etc.) seriously affect the appearance and function of the forearm of the child, and even cause disability, and cause immeasurable psychological barriers. Such deformities require matching surgical treatment of bones and joints to restore the appearance and function. The key operation is bone lengthening and bone transport technology, which requires a special external fixator system for correction. The external fixators on the market are not ideal in adaptability in the treatment of forearm deformities, and more related complications occur: loosening of the external fixator, deformation of the external fixator leading to correction failure, and new secondary deformities during the correction process - dislocation of the distal radioulnar joint, etc., which challenge the correction effect. Therefore, there is an urgent need for an external fixation device that can meet the needs of clinical treatment for the correction of children's forearm deformity.

[0003] Bone transfer devices have strict requirements on the transfer distance and direction, which is mainly to ensure the effect of bone regeneration and healing. 1. The needs of the osteogenesis process: Bone transfer technology uses an external fixator to fix the bone defect limb, cuts off a piece of living bone (active bone segment), and then moves this bone segment in a predetermined direction and speed. In this process, the moving bone segment gradually approaches the stump of the corresponding bone, maintains continuity with the osteotomy surface of the main bone through traction osteogenesis, and finally achieves the regeneration and healing of bone tissue. Therefore, the transfer distance and direction need to be precisely controlled to ensure the smooth progress of the osteogenesis process. 2. Avoid force line deviation: During the bone transfer process, if the transfer distance is too long or the direction is inaccurate, it may cause the long bone force line to deviate. This will not only affect the regeneration and healing effect of the bone, but may also cause postoperative bone deformity or dysfunction. Therefore, by setting a reasonable transfer distance and direction, the risk of force line deviation can be reduced and the success rate of the operation can be improved. Summary of the invention

[0004] In view of the above shortcomings, the present invention discloses a fixation pin assembly and a radius and ulna bone transport device composed of the same, which can adjust the distance and direction of bone transport, improve the transport accuracy, and avoid mistakes and risks caused by blind operation of bone transport.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A clamp block assembly includes a clamping portion and a fixing portion meshing with the clamping portion teeth, which are fixed by a locking member after meshing, wherein the fixing portion includes a socket fixedly connected to the clamping portion and a clamping plate fastened to the socket, and an installation hole is provided between the clamping plate and the socket.

[0006] Furthermore, the end face of the fixing portion adjacent to the clamping portion is provided with radially arranged protrusions, and the end face of the clamping portion adjacent to the fixing portion is provided with grooves matching the protrusions; or the end face of the fixing portion adjacent to the clamping portion is provided with radially arranged grooves, and the end face of the clamping portion adjacent to the fixing portion is provided with protrusions matching the grooves.

[0007] Furthermore, the clamping part includes a clamping seat and a clamping cover fixedly connected to the clamping seat, and a bone pin hole is provided between the clamping seat and the clamping cover.

[0008] Furthermore, the clamping part includes a transition piece for changing the direction of the clamped part, a half ring, and a fixing piece for fixing the half ring. The transition piece is fixed after being meshed and connected with the fixing part, and the transition piece is movably connected with the fixing piece.

[0009] Furthermore, the transition piece and the fixing piece are movably connected via a fastener, and the fastener comprises a screw, on which an upper square nut, a fixing piece, a transition piece and a lower square nut are sequentially mounted, and both the upper square nut and the lower square nut are provided with protrusions, the lower square nut is meshingly connected to the fixing piece, and the lower square nut is threadedly connected to the screw.

[0010] Furthermore, the fixing member is provided with a mounting position matching the half ring.

[0011] Furthermore, the radially arranged protrusions or grooves occupy 0-1 / 6 of the entire end surface curvature.

[0012] A child bone transport and multifunctional orthopedic device, comprising a main rod, a clamping block assembly, and a bone pin / half ring. Three clamping block assemblies are installed on the main rod, and bone pins are installed on the clamping block assemblies respectively. The clamping block assemblies at both ends of the main rod are clamping block assembly A and clamping block assembly B, and the clamping block assembly in the middle is clamping block assembly C. A transport assembly capable of moving clamping block assembly C left and right is also arranged on the main rod; The clamping block assembly A and the clamping block assembly B fix the ulna and radius bone transport device on the bone through bone pins, and the clamping block assembly C is fixed on the bone to be transported through bone pins.

[0013] Furthermore, the moving assembly includes a sliding sleeve mounted on the main rod, and both ends of the sliding sleeve are respectively provided with adjusting nuts threadedly connected to the main rod.

[0014] Furthermore, pins are respectively provided on both sides of the sliding sleeve, and the lower ends of the pins are located in sliding grooves provided on the main rod.

[0015] Furthermore, the main rod is provided with scale lines which can display the moving distance of the clamping block assembly C.

[0016] The present invention discloses a device for treating the transfer or lengthening of the ulna and radius bones, which can automatically realize the adjustability of the transfer distance and direction, improve the transfer accuracy, and can also accurately control the transfer distance and direction, with high control accuracy and small error. The present invention discloses a device for treating the transfer or lengthening of the ulna and radius bones, which is easy to operate, has low production cost and strong practicality, and is not only used for the transfer or lengthening of the ulna and radius bones, but also can be used in places where microvascular network reconstruction is required, and has good treatment effect and shortened treatment time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic diagram of the structure of the clamping block assembly; Figure 2 is a schematic diagram of the structure of the clamping block assembly 2; Figure 3 is a schematic diagram of the structure of the clamp assembly three; Figure 4 It is a schematic diagram of the structure of the clamping block assembly 3 from another angle; Figure 5 1 is a schematic diagram of the structure of the clamping block assembly 4; Figure 6 It is a schematic diagram of the structure of the clamping block assembly 4 from another angle; Figure 7 is a schematic diagram of the structure of the clamping block assembly five; Figure 8 is a schematic diagram of the structure of the clamping block assembly 5 from another angle; Fig. 9 It is a structural schematic diagram of the main rod and its moving components; Fig.10 yes Fig. 9 Sectional view along AA direction; Fig.11 It is a structural schematic diagram of a first embodiment of a pediatric bone transport and multifunctional orthopedic device; Fig.12 is a schematic structural diagram of a second embodiment of a pediatric bone transport and multifunctional orthopedic device; Figure markings: 1. fixing part, 2. clamping part 1, 2-1. clamping seat, 2-2. clamping cover, 2-3. bone pin hole, 2-4. locking screw, 3. connecting piece, 4. fastening screw, 5. protrusion, 6. gear, 7. groove, 8. tooth groove, 9. fixing bolt, 10. transition piece, 11. clamping part 2, 12. fastener, 12-1. screw, 12-2. upper square nut, 12-3. fixing piece, 12-4. lower square nut, 13. clamping part 3, 14. main rod, 15. adjusting sleeve, 16. adjusting nut 1, 17. adjusting nut 2, 18. slide groove, 19. limit pin 1, 20. limit pin 2, 21. bone pin, 22. half ring. DETAILED DESCRIPTION

[0018] The present invention is further illustrated by the following examples, but is not intended to be limiting of the present invention.

[0019] Embodiment 1 A clamping block assembly, such as Figure 1 As shown, it includes a clamping part 2 and a fixing part 1 meshed with the clamping part 2. After the two are meshed, they are fixed by a locking member, which can be a locking screw 2-4. The fixing part 1 is provided with a connecting member 3 which can be an integral structure. The fixing part 1 includes a clamping seat 1-2 fixedly connected to the clamping part 2 and a clamping plate 1-1 fastened to the clamping seat 1-2. The clamping seat 1-2 and the clamping plate 1-1 are fixed by a fastening screw 4. Figure 1 , 2 A mounting hole 1-3 is provided between the clamping plate 1-1 and the clamping seat 1-2. The mounting hole 1-3 is used to fix the clamping block assembly on other parts, such as a round rod, a square rod, etc. The shape of the mounting hole 1-3 can be determined according to the application environment.

[0020] The end face of the fixing portion 1 adjacent to the clamping portion 2 is provided with radially arranged protrusions 5, and the end face of the clamping portion 2 adjacent to the fixing portion 1 is provided with grooves 7 matching the protrusions 5, and the radially arranged protrusions 5 or grooves 7 occupy 0-1 / 6 of the entire end face curvature; or the end face of the fixing portion 1 adjacent to the clamping portion 1 is provided with radially arranged grooves 7, and the end face of the clamping portion 2 adjacent to the fixing portion 1 is provided with protrusions 5 matching the grooves 7.

[0021] The meshing of teeth ensures the stable positioning of the clamping part after it is adjusted into place. The design of the protrusions and grooves increases the contact area and friction, preventing the clamping part from sliding or deflecting when subjected to force. By setting the optional gears of the protrusions and grooves on the adjacent end faces, the clamping part can be accurately adjusted within the range of 0-60° relative to the fixed part. This design allows the user to select a specific angle as needed to meet different work requirements. The user only needs to align the protrusion of the clamping part with the corresponding groove on the fixed part to complete the angle adjustment. This design simplifies the adjustment process and improves work efficiency.

[0022] The clamping part 2 includes a clamping seat 2-1 and a clamping cover 2-2 fixedly connected to the clamping seat 2-1. A bone needle 21 hole 2-3 is provided between the clamping seat 2-1 and the clamping cover 2-2 for installing the bone needle 21.

[0023] Example 2 Figure 5 , 6 As shown, the difference between this embodiment and the first embodiment lies in the difference in the clamping part. The clamping part in this embodiment is the second clamping part 11, which includes a transition piece 10 for changing the direction of the clamped part, a half ring 22, and a fixing piece 12-3 for fixing the half ring 22, which can be a fixing bolt 9. The transition piece 10 is fixed after being meshed with the fixing part, and the transition piece 10 is movably connected with the fixing piece 12-3. The fixing piece 12-3 is provided with a mounting position matching the half ring 22. The transition piece 10 allows the clamped part to be adjusted in multiple directions to meet the needs of different usage scenarios.

[0024] The transition piece 10 is movably connected with the fixing piece through a fastener 12, and the fastener 12 includes a screw 12-1, on which an upper square nut 12-2, a fixing piece 12-3, a transition piece 10, and a lower square nut 12-4 are sequentially mounted, and the upper square nut 12-2 and the lower square nut 12-4 are both provided with convex rings, and the convex rings are provided with teeth, and the upper square nut 12-2 is meshedly connected with the fixing piece 12-3, and the lower square nut 12-4 is threadedly connected with the screw, and the fixing pieces 12-3 are meshed with each other to increase friction and prevent rotation. This design can achieve angle swing and can be locked by screws.

[0025] Example 3 Figure 7 , 8 As shown, the difference between this embodiment and the second embodiment lies in the different clamping parts. The clamping part in this embodiment is the clamping part three 13, which does not include the transition piece 10 for changing the direction of the clamped part. The clamping part three 13 is an integral structure, and a mounting position for the half ring 9 is provided on the clamping part three 13. The half ring and the clamping part three are fixedly installed by bolts.

[0026] Embodiment 4 Fig. 9 , 10As shown in 11, a bone transport and multifunctional orthopedic device for children includes a main rod 14, a clamping block assembly, and a bone pin 21. Three clamping block assemblies are installed on the main rod 14, and bone pins 21 are installed on the clamping block assemblies respectively. The clamping block assemblies at both ends of the main rod 14 are clamping block assembly A and clamping block assembly B (clamping block assembly B is mainly used to stabilize the lower ulna and radius during the ulna extension process, or to pull the radial head to reset the dislocated radial head when it is necessary to reset the radial head), and the middle clamping block assembly is clamping block assembly C. A moving assembly that can move the clamping block assembly C left and right is also provided on the main rod 14; and a scale line that can display the moving distance of the clamping block assembly C is provided on the main rod 14. The design of the moving assembly and the scale line enables the clamping block assembly to move to the specified position quickly and accurately.

[0027] The clamping block assembly A and the clamping block assembly B fix the ulna and radius bone transport device to the bone through the bone pins 21, and the clamping block assembly C is fixed to the bone to be transported through the bone pins 21. The clamping block assembly A, the clamping block assembly B, and the clamping block assembly C in this embodiment adopt the design of the embodiment 1.

[0028] The moving assembly includes a sliding sleeve 15 mounted on the main rod 14. Both ends of the sliding sleeve 15 are respectively provided with adjusting nuts threadedly connected to the main rod 14, namely, an adjusting nut 16 and an adjusting nut 2 17.

[0029] The two sides of the sliding sleeve 15 are provided with pins, in the figure, pin 19 and pin 20, respectively, and the lower ends of the pins are located in the slide slot 18 provided on the main rod 14. The function of the limit pin is to prevent the adjustment sleeve from rotating and ensure that it moves in a straight line along the slide slot. When moving, to move to the left, it is necessary to loosen the adjustment nut 2 and use the adjustment nut 1 to push the moving sleeve to the left, and vice versa.

[0030] The working principle of this device is as follows: Fixation and positioning: First, the entire device is fixed to the ulna or radius through the bone pins on the clamping block components A and B. Then, the clamping block component C is fixed to the bone part to be moved through the bone pins on it. At this point, the entire device and the bone form a stable connection system.

[0031] Moving operation: When the bone needs to be moved or corrected, the operator moves the clamping block assembly C to the left or right on the main rod by operating the moving assembly. Since the clamping block assembly C is connected to the bone part to be moved through the bone pin, this movement will drive the bone part to move accordingly.

[0032] Precise adjustment: The scales on the main rod, adjusting nut 1, adjusting nut 2, etc. have precise transmission mechanisms and positioning devices to ensure the accuracy and stability of the clamp assembly C during movement. The operator can make small or large adjustments to the bone as needed to achieve the desired correction effect.

[0033] Embodiment 5 The difference between this embodiment and embodiment 3 is that a half ring 22 is installed on the clamping block assembly, and the clamping block assembly A and the clamping block assembly B adopt the design of embodiment 2 and embodiment 3.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form implementation modes that can be understood by those skilled in the art.

Claims

1. A clamping block assembly, characterized in that: It includes a clamping part and a fixing part meshing with the clamping part teeth, which are fixed by a locking piece after meshing. The fixing part includes a socket fixedly connected to the clamping part and a clamping plate fastened to the socket, and a mounting hole is provided between the clamping plate and the socket.

2. The clamping block assembly according to claim 1, characterized in that: The end face of the fixing part adjacent to the clamping part is provided with radially arranged protrusions, and the end face of the clamping part adjacent to the fixing part is provided with grooves matching the protrusions; or the end face of the fixing part adjacent to the clamping part is provided with radially arranged grooves, and the end face of the clamping part adjacent to the fixing part is provided with protrusions matching the grooves.

3. The clamping block assembly according to claim 2, characterized in that: The clamping part comprises a clamping seat and a clamping cover fixedly connected to the clamping seat, and a bone pin hole is arranged between the clamping seat and the clamping cover.

4. The clamping block assembly according to claim 1, characterized in that: The clamping part comprises a transition piece for changing the direction of the clamped part, a half ring, and a fixing piece for fixing the half ring. The transition piece is fixed after being meshed and connected with the fixing part, and the transition piece is movably connected with the fixing piece.

5. The clamping block assembly according to claim 4, characterized in that: The transition piece and the fixing piece are movably connected via a fastener, and the fastener comprises a screw, on which an upper square nut, a fixing piece, a transition piece and a lower square nut are sequentially mounted, and both the upper square nut and the lower square nut are provided with protrusions, the lower square nut is meshedly connected to the fixing piece, and the lower square nut is threadedly connected to the screw.

6. The clamping block assembly according to claim 5, characterized in that: The fixing piece is provided with a mounting position matching the half ring.

7. The clamping block assembly according to any one of claims 3 and 6, characterized in that: The radially arranged protrusions or grooves occupy 0-1 / 6 of the entire end surface curvature.

8. A bone transport and multifunctional orthopedic device for children, characterized in that: The clamp block assembly according to claim 7 comprises a main rod, a clamp block assembly, and a bone needle / half ring. Three clamp block assemblies are mounted on the main rod, and bone needles are mounted on the clamp block assemblies respectively. The clamp block assemblies at both ends of the main rod are clamp block assembly A and clamp block assembly B, and the clamp block assembly in the middle is clamp block assembly C. A moving assembly capable of moving clamp block assembly C left and right is also arranged on the main rod; The clamping block assembly A and the clamping block assembly B fix the ulna and radius bone transport device on the bone through bone pins, and the clamping block assembly C is fixed on the bone to be transported through bone pins.

9. The bone transport and multifunctional orthopedic device for children according to claim 8, characterized in that: The moving assembly comprises a sliding sleeve mounted on the main rod, and both ends of the sliding sleeve are respectively provided with adjusting nuts threadedly connected to the main rod.

10. The pediatric bone transport and multifunctional orthopedic device according to claim 9, characterized in that: Pins are respectively arranged on both sides of the sliding sleeve, and the lower ends of the pins are located in the sliding grooves arranged on the main rod; and scale lines that can display the moving distance of the clamping block assembly C are arranged on the main rod.

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