Integral bone mobilization internal fixation bone plate

Abstract

This utility model belongs to the field of medical device technology, specifically disclosing an integrated bone transport internal fixation plate, including a fixation plate body with several through-holes in a composite threaded pattern. Kirschner wire holes are symmetrically located at both ends of the fixation plate body. A fixation post is mounted on the left side of the fixation plate body via a connecting frame, and several C-clamps are fitted onto the fixation post. This utility model uses the composite threaded holes in conjunction with bone screws to internally fix bone defects in patients. The number of fixation screws can be selected according to the patient's specific condition. Simultaneously, the C-clamps, which can rotate on the fixation post, fix the free bone segment, allowing the free bone segment to be effectively fixed while sliding along the fixation post, facilitating bone transport and further reducing the degree of tissue damage caused by bone transport surgery.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an integrated bone transport internal fixation plate. Background Technology

[0002] Bone transport is currently the most effective clinical method for treating challenging fractures such as bone defects, nonunion, bone infection, and knee stiffness. It simplifies the previously cumbersome and difficult treatment process for these conditions. Bone transport can also treat patients with bone defects or nonunion accompanied by bone infection, bone shortening, foot drop, and other complications simultaneously. The technique involves cutting the bone proximal or distal to the bone defect and then using a specialized external fixator to gradually transport the free bone segment towards the defect. New bone tissue forms along the path of the free bone segment until the bone defect is repaired.

[0003] External fixators often cause secondary trauma to the patient's tissues and restrict patient movement, making the surgery more difficult. Therefore, an internal fixation plate is currently used to fix the distal and proximal ends of the bone defect during bone transport surgery. After the bone transport is completed, the newly formed bone is directly fixed onto the internal fixation plate. However, this internal fixation plate structure is not ideal for bone transport fixation that requires close embracing of free bone, and additional auxiliary procedures by medical staff are still necessary. Utility Model Content

[0004] To address the aforementioned issues and facilitate internal fixation of the target bone during bone transport surgery, this invention proposes an integrated bone transport internal fixation plate. The plate's fixation body is secured to the distal and proximal ends of the patient's bone defect using bone screws. C-clamps on the plate are then fixed to the severed free bone segment via bone screws, thus achieving internal fixation. The movement of the C-clamps on the fixation post facilitates the transport of the free bone segment. Simultaneously, the C-clamps can rotate on the fixation post, allowing for further aligning and fixing of the free bone segment during surgery, resulting in more effective fixation.

[0005] To achieve the technical objectives mentioned above, this utility model is implemented through the following technical solution: an integrated bone transport internal fixation plate, including a fixation plate body;

[0006] The fixed plate has several through composite threaded holes, and Kirschner wire holes are symmetrically opened at both ends of the fixed plate. A fixed post is installed on the left side of the fixed plate through a connecting frame, and several C-shaped clips are sleeved on the fixed post.

[0007] Furthermore, the composite threaded hole is composed of two overlapping threaded holes of different sizes, allowing for the selection of bone screws of appropriate diameters to effectively fix the two ends of the patient's bone.

[0008] Furthermore, the Kirschner wire holes are located outside the composite threaded holes at both ends of the fixation plate, with the hole axis parallel to the composite threaded hole axis. Using the Kirschner wire holes in conjunction with Kirschner wires, the fixation plate can be initially positioned at both ends of the patient's bone defect, which facilitates accurate insertion of bone screws and prevents the fixation plate from shifting during fixation.

[0009] Furthermore, the two ends of the fixation plate are trapezoidal and surrounded by rounded edges, which facilitates smoother implantation during surgery and prevents the fixation plate from causing excessive damage to the patient's soft tissue.

[0010] Furthermore, the C-clamp is provided with a fixing threaded hole, which can be used to fix the free bone segment by cooperating with the bone screw;

[0011] Furthermore, the clamping end of the C-clamp is equipped with an anti-detachment post. The anti-detachment post can prevent excessive wear on the fixed post when the C-clamp rotates on the fixed post, and increase the firmness of the C-clamp on the fixed post.

[0012] Furthermore, the cross-sectional shape of the connecting frame is T-shaped, which allows the C-clamp to have sufficient rotation range after the connecting frame is connected to the fixing column, resulting in a better fixation effect between the C-clamp and the free bone segment;

[0013] Furthermore, the two ends of the fixing column are threaded with limit caps, which can fall off after the free bone ends have moved too far when the C-clamp is installed.

[0014] The beneficial effects of this utility model are:

[0015] This invention uses composite threaded holes on a fixing plate to work with bone screws for internal fixation of bone defects in patients. The number of fixation screws can be selected according to the patient's specific condition. At the same time, the free bone segment is fixed by a C-shaped clamp that can rotate on the fixing post, so that the free bone segment can be effectively fixed while sliding along the direction of the fixing post, which facilitates bone transport and further reduces the degree of damage to the patient's tissues caused by bone transport surgery. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments are briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0018] Figure 2 This is a top view of Embodiment 1 of this utility model;

[0019] Figure 3 This is a schematic diagram of the C-shaped clip structure of Embodiment 1 of this utility model;

[0020] Figure 4 This is a partial front view of Embodiment 1 of this utility model.

[0021] The structural names represented by the labels in the attached diagram are as follows:

[0022] 1-Fixed plate, 101-Rounded corner edge, 2-Composite threaded hole, 3-Kirch pin hole, 4-Connecting bracket, 5-Fixed post, 6-C-clamp, 601-Fixed threaded hole, 602-Anti-detachment post, 7-Limit cap. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0024] Example 1

[0025] See Figures 1 to 4 As shown, and based on the contents of this specification, an integrated bone transport internal fixation plate is proposed, including a fixation plate body 1;

[0026] The fixation plate 1 is made of titanium alloy steel plate. Titanium alloy material has high strength, light weight, and excellent biocompatibility, making it generally suitable for in vivo implantation. The fixation plate 1 is elongated and has 12 through composite threaded holes 2. Each composite threaded hole 2 is composed of two overlapping threaded holes of different sizes, allowing for the selection of bone screws of appropriate diameters to effectively fix the two ends of the patient's bone. The ends of the fixation plate 1 are trapezoidal and surrounded by rounded edges 101, facilitating smoother implantation during surgery and preventing excessive damage to the patient's soft tissue. Kirschner wire holes 3 are symmetrically located at both ends of the fixation plate 1. The Kirschner wire holes 3 are located outside the composite threaded holes 2 at both ends of the fixation plate 1, with the hole axis parallel to the axis of the composite threaded holes 2. Using the Kirschner wire holes 3 in conjunction with Kirschner wires, the fixation plate 1 can be initially positioned at both ends of the patient's bone defect, facilitating accurate insertion of bone screws and preventing the fixation plate 1 from shifting during fixation.

[0027] A fixing post 5 is installed on the left side of the fixing plate 1 via a connecting frame 4. Two identical C-shaped clips 6 are fitted onto the fixing post 5. Both the connecting frame 4 and the fixing post 5 are made of the same titanium metal material. The cross-sectional shape of the connecting frame 4 is T-shaped, which allows the C-shaped clips 6 to have sufficient rotation range after the connecting frame 4 is connected to the fixing post 5, resulting in better fixation of the C-shaped clips 6 to the free bone segment. The C-shaped clips 6 have fixing threaded holes 601, which can be used with bone screws to fix the free bone segment. The clamping end of the C-shaped clips 6 is equipped with an anti-dislodgement post 602. The anti-dislodgement post 602 can prevent excessive wear on the fixing post 5 when the C-shaped clips 6 rotate on the fixing post 5 and increase the firmness of the C-shaped clips 6 on the fixing post 5. Limiting caps 7 are threaded onto both ends of the fixing post 5. The limiting caps 7 can fall off after the free bone segment moves too far when the C-shaped clips 6 are installed.

[0028] When using this integrated bone transport internal fixation plate, the operation method and principle are as follows: First, attach the C-clamp 6 to the fixation post 5 and tighten the limiting cap 7. Then, insert Kirschner wires into the Kirschner wire holes 3 and position them at the proximal and distal ends of the patient's bone defect. After determining the position of the fixation plate 1, use bone screws in conjunction with the composite threaded holes 2 to fix the fixation plate 1 to the patient's bone. Further fix the excised free bone segment by adjusting the C-clamp 6 to a suitable position on the fixation post 5 and rotating it to a certain angle. Use bone screws to fix the C-clamp 6 to the free bone segment. Then, bone transport can be performed on the free bone segment. The appropriate number of C-clamps 6 can be selected to fix the free bone segment according to its specific needs.

[0029] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The preferred embodiments do not describe all details exhaustively, nor do they limit the present invention to the specific implementations described. Obviously, based on the content of this specification, those skilled in the art will understand that various modifications and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An integrated bone transport internal fixation bone plate, characterized in that, Including the fixed plate (1): The fixed plate (1) has several through composite threaded holes (2), and Kirschner wire holes (3) are symmetrically opened at both ends of the fixed plate (1). A fixed post (5) is installed on the left side of the fixed plate (1) through a connecting frame (4), and several C-shaped clips (6) are sleeved on the fixed post (5).

2. The integral bone transport internal fixation bone plate according to claim 1, characterized in that: The composite threaded hole (2) is composed of two threaded holes of different sizes that overlap.

3. The integral bone transport internal fixation bone plate according to claim 2, characterized in that: The Kirschner wire hole (3) is located outside the composite threaded hole (2) at both ends of the fixation plate (1), and the hole axis is parallel to the axis of the composite threaded hole (2). The Kirschner wire hole (3) can be used in conjunction with the Kirschner wire to preliminarily position the fixation plate (1) at both ends of the patient's bone defect.

4. The integral bone transport internal fixation bone plate according to claim 3, characterized in that: The two ends of the fixed plate (1) are trapezoidal and surrounded by rounded corners (101).

5. The integral bone transport internal fixation bone plate according to claim 4, characterized in that: The C-clamp (6) is provided with a fixing threaded hole (601) so that the C-clamp (6) can be used to fix the bone screw and the free bone segment to each other.

6. The integral bone transport internal fixation bone plate according to claim 5, characterized in that: The C-clamp (6) is equipped with an anti-detachment post (602) at the clamping end.

7. The integral bone transport internal fixation bone plate according to claim 6, characterized in that: Limit caps (7) are threadedly connected to both ends of the fixed column (5).

8. The integrated bone transport internal fixation plate according to claim 7, characterized in that: The cross-sectional shape of the connecting frame (4) is T-shaped, so that the C-clamp (6) has a sufficient range of rotation after the connecting frame (4) is connected to the fixed column (5).

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