Claw-shaped steel plate fixator with guiding fixation

Abstract

A claw-shaped steel plate fixator with guide fixing, including first claw-shaped plate and second claw-shaped plate, first claw-shaped plate and second claw-shaped plate are parallelly arranged, and reinforcing assembly is fixedly connected between first claw-shaped plate and second claw-shaped plate, first claw-shaped plate is fixedly connected with first grab block at upper and lower ends, first guide through hole is formed in the middle of two first grab blocks, and two first guide through holes are coaxially corresponding, second claw-shaped plate is fixedly connected with second grab block at upper and lower ends, second guide through hole is formed in the middle of two second grab blocks, and two second guide through holes are coaxially corresponding, the utility model overcomes the insufficient of prior art, makes whole fracture fixation process more efficient and convenient, and because it is operated basically on bone surface, greatly reduces surgical trauma, improves the postoperative recovery rate of patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a claw-shaped steel plate fixator with guide fixation. Background Technology

[0002] The management of irregular fractures around the muscle insertion points of long bones is a major clinical challenge. Fractures of the greater trochanter of the femur, whether isolated or post-hip replacement fractures, are particularly difficult to fix and heal due to high stress, small fracture fragments, and osteoporosis. Current treatments often employ: 1) Kirschner wire tension band fixation; 2) greater trochanter plate fixation; and 3) curved plate fixation.

[0003] The disadvantages of Kirschner wire tension band fixation are: it is difficult to fix certain small / comminuted fractures; and it is sometimes difficult to reach the position desired by the surgeon when the Kirschner wire is inserted; in addition, there is a risk of cutting the bone directly with the wire, and the risk of wire falling off, breaking and the wire coming out is relatively high.

[0004] The disadvantages of large trochanter plates are: currently available large trochanter plates are very thick and heavy, expensive, and often require large incisions, extensive soft tissue dissection, and fixation of long segments of bone. In addition, steel cable binding and fixation are required, and there is still a risk of steel cable loosening and breakage; steel cable circumduction can also affect bone blood supply; and vascular and nerve damage may occur during the puncture and binding of steel cables.

[0005] The disadvantages of the curved plate fixation method are: the bone fragments at the bone ends are often small in volume and thin in bone, limiting the number and strength of screw fixation; if it is a greater trochanter fracture after hip replacement surgery, there is often osteoporosis in the greater trochanter and proximal femur, making it difficult to fix the proximal fracture line, and because the prosthesis occupies the femoral medullary cavity, the screws at the distal fracture line can only fix the lateral cortex, resulting in poor overall plate fixation strength and a high risk of loosening; and it cannot be used for comminuted fractures at the bone ends. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a claw-shaped steel plate fixator with guide fixation, which overcomes the shortcomings of the prior art, making the entire fracture fixation process more efficient and convenient. Furthermore, since the operation is basically performed on the bone surface, it greatly reduces surgical trauma and improves the patient's postoperative recovery speed.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A claw-shaped steel plate fastener with guide fixation includes a first claw plate and a second claw plate, the first claw plate and the second claw plate are arranged parallel to each other, and a reinforcing component is fixedly connected between the first claw plate and the second claw plate;

[0009] The first claw plate is fixedly connected to the upper and lower ends of the first claw plate with a first gripping block. The two first gripping blocks are provided with a first guide through hole in the middle of each first gripping block. The two first guide through holes are coaxially corresponding to each other. The second claw plate is fixedly connected to the upper and lower ends of the second claw plate with a second gripping block. The two second gripping blocks are provided with a second guide through hole in the middle of each second gripping block. The two second guide through holes are coaxially corresponding to each other.

[0010] Preferably, the reinforcement component includes a first reinforcing rib and a second reinforcing rib, which are arranged to cross each other; the two ends of the first reinforcing rib are fixedly connected to the first claw-shaped plate and the second claw-shaped plate respectively, and the two ends of the second reinforcing rib are also fixedly connected to the first claw-shaped plate and the second claw-shaped plate respectively.

[0011] Preferably, the outer surfaces of the first reinforcing rib and the second reinforcing rib are respectively provided with a first wire placement groove and a second wire placement groove along the axial direction.

[0012] Preferably, the thickness of the first gripper block and the second gripper block is greater than the thickness of the first claw plate and the second claw plate, and the inner walls of the first guide hole and the second guide hole are smooth.

[0013] Preferably, both the first gripper block and the second gripper block have chamfered bevels at their ends.

[0014] This invention provides a claw-shaped plate fixator with guide fixation. It offers the following advantages: The first claw plate and the second claw plate, with their respective first and second gripping blocks at both ends, provide initial fixation and repositioning of the bone fragment. Furthermore, the reinforcement components enhance the overall stability of the claw-shaped plate fixator, effectively preventing bone fragment displacement. The first and second guide holes guide the precise insertion of two parallel Kirschner wires, allowing for accurate fixation of the bone fragment, ensuring precise repositioning accuracy, and improving surgical efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0016] Figure 1 A schematic diagram of the structure of this utility model;

[0017] Figure 2 A schematic diagram of the cross-sectional structure of the first claw-shaped plate of this utility model in use;

[0018] Explanation of the labels in the diagram:

[0019] 1. First claw-shaped plate; 2. Second claw-shaped plate; 3. Reinforcing component; 4. First gripping block; 5. First guide through hole; 6. Second gripping block; 7. Second guide through hole; 8. First reinforcing rib; 9. Second reinforcing rib; 10. First wire placement groove; 11. Second wire placement groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] Example 1, as Figures 1 to 2 As shown, a claw-shaped steel plate fastener with guide fixation includes a first claw plate 1 and a second claw plate 2. The first claw plate 1 and the second claw plate 2 are arranged parallel to each other, and a reinforcing component 3 is fixedly connected between the first claw plate 1 and the second claw plate 2.

[0022] The first claw plate 1 is fixedly connected to the upper and lower ends of the first claw block 4, and the two first claw blocks 4 are provided with a first guide through hole 5 in the middle, and the two first guide through holes 5 are coaxially corresponding. The second claw plate 2 is fixedly connected to the upper and lower ends of the second claw block 6, and the two second claw blocks 6 are provided with a second guide through hole 7 in the middle, and the two second guide through holes 7 are coaxially corresponding.

[0023] Working principle:

[0024] In use, first select a claw-shaped plate fixator of appropriate size according to the required bone fragment size; then place the bone fragment between the first claw plate 1 and the second claw plate 2. The first claw block 4 and the second claw block 6 at both ends of the first claw plate 1 and the second claw plate 2 are used for initial fixation and repositioning of the bone fragment. The overall stability of the claw-shaped plate fixator is further enhanced by the support of the reinforcing component 3, effectively preventing bone fragment displacement. Next, Kirschner wires are drilled into the first guide hole 5 and the second guide hole 7 at the upper end, respectively, so that two parallel Kirschner wires emerge from the first guide hole 5 and the second guide hole 7 at the lower end. Through the guiding action of the first guide hole 5 and the second guide hole 7, the surgeon can precisely control the position and angle of the Kirschner wires, ensuring accurate bone fragment repositioning. Thus, the bone fragment can be precisely fixed using two parallel Kirschner wires, ensuring stable repositioning. In addition, if it is necessary to enhance the stability of fracture fixation during the operation, a figure-eight binding structure can be formed by wrapping the two ends of the Kirschner wires around the steel wire or cable and tightening them on the outer side of the claw-shaped fixator.

[0025] By employing the aforementioned claw-shaped plate fixator, the entire fracture fixation process becomes more efficient and convenient. Furthermore, because the procedure is primarily performed on the bone surface, surgical trauma is significantly reduced, improving the patient's postoperative recovery speed. Initial fixation of the bone fragments is achieved through the first claw plate 1 and the second claw plate 2, followed by reinforcement support from the reinforcing component 3 to ensure the bone fragments do not shift during reduction. Subsequently, Kirschner wires and figure-eight binding with steel wires or cables provide multi-layered, stable fixation, effectively improving the quality of fracture healing and reducing postoperative complications.

[0026] In Example 2, as a further preferred embodiment of Example 1, the reinforcing component 3 includes a first reinforcing rib 8 and a second reinforcing rib 9, which are arranged intersectingly to form a cross-rib structure. The two ends of the first reinforcing rib 8 are fixedly connected to the first claw-shaped plate 1 and the second claw-shaped plate 2, respectively, and the two ends of the second reinforcing rib 9 are also fixedly connected to the first claw-shaped plate 1 and the second claw-shaped plate 2, respectively. The intersecting first reinforcing ribs 8 and 9 further reinforce the claw-shaped steel plate fixator, improving the overall structural stability and deformation resistance. Simultaneously, the cross-rib structure formed by the first reinforcing ribs 8 and 9 effectively disperses stress, avoiding excessive concentration at a single stress point, further ensuring the safety and stability of the bone fragment during the healing process.

[0027] In Example 3, as a further preferred embodiment of Example 1, the outer surfaces of the first reinforcing rib 8 and the second reinforcing rib 9 are respectively provided with a first wire placement groove 10 and a second wire placement groove 11 along the axial direction. The first wire placement groove 10 and the second wire placement groove 11 allow the wire or cable to smoothly embed into the grooves during figure-eight binding, ensuring a tight and slip-free binding and further enhancing the fixation effect. Simultaneously, the first wire placement groove 10 and the second wire placement groove 11 also effectively reduce the direct pressure of the wire on the bone surface, lowering the risk of local tissue damage and improving patient comfort and healing quality.

[0028] In Example 4, as a further preferred embodiment of Example 1, the thickness of the first gripper 4 and the second gripper 6 is greater than the thickness of the first claw plate 1 and the second claw plate 2, and the inner walls of the first guide hole 5 and the second guide hole 7 are smooth. By setting the first gripper 4 and the second gripper 6 to a certain thickness, the first guide hole 5 and the second guide hole 7 both have a certain depth, which facilitates the guiding and positioning of the Kirschner wire during insertion; it allows the Kirschner wire to be accurately inserted into the predetermined position and exit through the opposing first guide hole 5 and the second guide hole 7, ensuring the stable fixation of the Kirschner wire inside the bone block and reducing the risk of secondary damage caused by displacement.

[0029] In Example 5, as a further preferred embodiment of Example 1, both the ends of the first gripping block 4 and the second gripping block 6 are provided with chamfered bevels. By setting the ends of the first gripping block 4 and the second gripping block 6 as beveled structures, the first gripping block 4 and the second gripping block 6 can fit more closely to the bone surface, thereby improving the gripping effect.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A claw-shaped steel plate anchor with a guide fixation, characterized in that: It includes a first claw plate (1) and a second claw plate (2), the first claw plate (1) and the second claw plate (2) are arranged parallel to each other, and a reinforcing component (3) is fixedly connected between the first claw plate (1) and the second claw plate (2); The first claw plate (1) is fixedly connected to the upper and lower ends of the first claw plate (1), and the two first claw plates (4) are provided with a first guide through hole (5) in the middle of the two first claw plates (4), and the two first guide through holes (5) are coaxially corresponding to each other. The second claw plate (2) is fixedly connected to the upper and lower ends of the second claw plate (2), and the two second claw plates (6) are provided with a second guide through hole (7) in the middle of the two second claw plates (6), and the two second guide through holes (7) are coaxially corresponding to each other.

2. The claw-shaped steel plate anchor with a guide fixation according to claim 1, characterized in that: The reinforcement component (3) includes a first reinforcing rib (8) and a second reinforcing rib (9), which are arranged to cross each other; the two ends of the first reinforcing rib (8) are fixedly connected to the first claw plate (1) and the second claw plate (2) respectively, and the two ends of the second reinforcing rib (9) are also fixedly connected to the first claw plate (1) and the second claw plate (2) respectively.

3. A claw-shaped steel plate anchor with a guide fixation according to claim 2, characterized in that: The outer surfaces of the first reinforcing bar (8) and the second reinforcing bar (9) are respectively provided with a first wire placement groove (10) and a second wire placement groove (11) along the axial direction.

4. The claw-shaped steel plate anchor with a guide fixation according to claim 1, characterized in that: The thickness of the first gripper (4) and the second gripper (6) is greater than the thickness of the first claw plate (1) and the second claw plate (2), and the inner walls of the first guide through hole (5) and the second guide through hole (7) are smooth.

5. The claw-shaped steel plate anchor with a guide fixation according to claim 1, characterized in that: Both the first gripper block (4) and the second gripper block (6) have chamfered bevels at their ends.

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