Customized femoral neck bone fracture fns guide

Abstract

The utility model relates to customized femoral neck bone fracture fns guider, including guide pipe, the guide pipe lower part fixed connection fixed base, fixed base upper part extends out greater trochanter side fixed extension part to greater trochanter, and fixed base one side extends out intertrochanteric ridge side fixed extension part to intertrochanteric ridge, and fixed base other side extends out side fixed extension part to intertrochanteric line, and guide pipe and femoral neck are in same axis, the utility model discloses a guide pipe formed by 3D printing is added to the position guider, and is used for fixing the greater trochanter side fixed extension part, the intertrochanteric ridge side fixed extension part and the intertrochanteric line side fixed extension part of guide pipe, let the insertion of kirschner wire be more smooth, effectively limit the activity range of kirschner wire, make it stably enter the central axis of femoral head, femoral neck and greater trochanter, can effectively improve kirschner wire stability and operation success rate, can effectively guarantee operation smoothly.

Description

Technical Field

[0001] This utility model relates to the field of medical supplies, specifically a customized femoral neck fracture fns guide. Background Technology

[0002] like Figure 4 As shown, current treatment for femoral neck fractures mainly relies on the positioning shovel 5 of the positioning guide to be placed at the gluteal trochanter 12, and then the position of the positioning guide tube 6 is manually adjusted through the positioning guide handle 7, so that the Kirschner wire can be coaxially inserted into the femoral head 8, femoral neck 9 and greater trochanter 11 to fix the fracture position. However, this guide relies solely on the positioning shovel 5 and the doctor's hand for positioning, which is not very stable, time-consuming and laborious to use, and is also prone to causing the Kirschner wire puncture angle to deviate.

[0003] Currently, a utility model patent with publication number CN215384548U discloses a high-precision centering and positioning device, including a 3D-printed guide plate body. The inner surface of the guide plate body is concave, adapted to the curvature of the lateral surface of the femur below the greater trochanter. The guide plate body is customized according to the proximal morphology of the patient's left / right femur, with extended lateral wings on the left and right sides to simultaneously guide the power rod and bone plate. The upper end of the guide plate body has two guide holes for passing Kirschner wires obliquely upward from the greater trochanter through the femoral neck to fix the femoral head. The middle part is a combined structure with a detachable guide hole for passing the guide pin through the femoral neck axis and fixing the femoral head. After removing the guide hole, the remaining part is the bone plate guide hole, and the guide hole base is connected to the guide plate by a tenon and mortise structure. This utility model provides a solution that reduces repeated intraoperative operations, allowing for a single operation, effectively ensuring the accuracy of FNS placement, greatly reducing the number of radiation exposures, and shortening the operation time.

[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN215384548U reduces the range of soft tissue dissection in the proximal femur and reduces postoperative complications caused by surgical trauma through a “7-shaped” combined structure and a wave-shaped wrapping design. However, its design has limitations such as excessively large guide plate size, unclear anatomical positioning, inconvenient disassembly, and failure to consider soft tissue resistance. In addition, it contains multiple independent parts, which require assembly and multiple rounds of adjustment during use, making the operation cumbersome and inconvenient to use. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a customized femoral neck fracture fns guide, which can effectively improve the stability of Kirschner wires and the success rate of surgery, and can effectively ensure the smooth progress of the operation.

[0006] To achieve the above objectives, this utility model provides a customized femoral neck fracture guide, comprising a guide tube, a fixing base fixedly connected to the lower part of the guide tube, a greater trochanter-side fixing extension extending from the upper part of the fixing base toward the greater trochanter, an intertrochanter-ridge-side fixing extension extending from one side of the fixing base toward the intertrochanteric crest, and a side fixing extension extending from the other side of the fixing base toward the intertrochanteric line. The fixing base formed by the greater trochanter-side fixing extension, the intertrochanter-ridge-side fixing extension, and the intertrochanteric line-side fixing extension semi-encloses the greater trochanter and the gluteal tuberosity; the guide tube and the femoral neck are on the same axis.

[0007] In addition, the customized femoral neck fracture fns guide proposed according to the above embodiments of this utility model may also have the following additional technical features: As a further improvement of this utility model, the side of the large rotor-side fixing extension, the inter-rotor ridge-side fixing extension, and the inter-rotor line-side fixing extension that conforms to the skeleton is provided with an arc that conforms to the skeleton.

[0008] As a further improvement of this utility model, the outer surfaces of the large rotor-side fixed extension, the inter-rotor ridge-side fixed extension, and the inter-rotor line-side fixed extension are smooth.

[0009] As a further improvement of this utility model, the large rotor-side fixed extension, the inter-rotor ridge-side fixed extension, the inter-rotor line-side fixed extension, and the guide tube are integrally formed.

[0010] By means of the above solution, this utility model has at least the following advantages: Compared with conventional surgical methods, by adding a guide tube formed by 3D printing to the position guide, and a greater trochanter-side fixation extension, an intertrochanteric ridge-side fixation extension, and an intertrochanteric line-side fixation extension for fixing the guide tube, the insertion of Kirschner wires is made smoother, the range of motion of Kirschner wires is effectively limited, and it is made to stably enter the femoral head, femoral neck, and the central axis of the greater trochanter, which can effectively improve the stability of Kirschner wires and the success rate of surgery, and can effectively ensure the smooth operation of surgery. Attached Figure Description

[0011] Figure 1 This is a frontal 3D schematic diagram of a customized femoral neck fracture fns guide; Figure 2 This is a top-view 3D view of a customized femoral neck fracture FNS guide; Figure 3 This is a schematic diagram illustrating the usage status of a customized femoral neck fracture fns guide. Figure 4 This is a schematic diagram showing the usage status of the position guide; In the figure: 1. Greater trochanter side fixation extension, 2. Intertrochanteric crest side fixation extension, 3. Intertrochanteric line side fixation extension, 4. Guide tube, 5. Position guide positioning shovel, 6. Position guide guide tube, 7. Position guide handle, 8. Femoral head, 9. Femoral neck, 10. Intertrochanteric crest, 11. Greater trochanter, 12. Gluteal tuberosity. Detailed Implementation

[0012] The customized femoral neck fracture fns guide of this utility model is described below with reference to the accompanying drawings.

[0013] In Embodiment 1 of this application, as Figures 1 to 3 As shown, this customized femoral neck fracture fns guide (hereinafter referred to as "the present invention") includes a greater trochanter-side fixation extension 1, an intertrochanteric crest-side fixation extension 2, an intertrochanteric line-side fixation extension 3, and a guide tube 4. The lower part of the guide tube 4 is fixedly connected to a fixation base. The upper part of the fixation base extends toward the greater trochanter 11 to form the greater trochanter-side fixation extension 1. One side of the fixation base extends toward the intertrochanteric crest 10 to form the intertrochanteric crest-side fixation extension 2. The other side of the fixation base extends toward the intertrochanteric line to form the intertrochanteric line-side fixation extension 3. The fixation base formed by the greater trochanter-side fixation extension 1, the intertrochanteric crest-side fixation extension 2, and the intertrochanteric line-side fixation extension 3 partially surrounds the greater trochanter 11 and the gluteal tuberosity 12. The guide tube 4 and the femoral neck 9 are on the same axis.

[0014] A high-precision centering and positioning device (hereinafter referred to as "the patent") with utility model publication number CN215384548U reduces the extent of soft tissue dissection in the proximal femur and lowers postoperative complications caused by surgical trauma through a "7-shaped" combined structure and a wave-shaped covering design. However, its design has limitations such as excessively large guide plate size, unclear anatomical positioning, inconvenient disassembly, and failure to consider soft tissue resistance. Furthermore, it contains multiple independent parts, requiring assembly and multiple adjustments during use, making operation cumbersome and inconvenient. This invention adds a 3D-printed guide tube 4 to the position guide, along with a greater trochanter-side fixing extension 1, an intertrochanteric ridge-side fixing extension 2, and an intertrochanteric line-side fixing extension 3 for fixing the guide tube 4. This makes the insertion of Kirschner wires smoother, and the overall structure is simple. No adjustment is required during surgery, and it can be directly clamped onto the femur, effectively limiting the range of motion of the Kirschner wire and allowing it to stably enter the midline of the femoral head 8, femoral neck 9, and greater trochanter 11. This can effectively improve the stability of the Kirschner wire and the success rate of the surgery, and can effectively ensure the smooth operation of the surgery.

[0015] To further optimize the working efficiency of this application and to make the fixation more stable, the sides of the large rotor-side fixing extension 1, the interrotor ridge-side fixing extension 2, and the interrotor line-side fixing extension 3 that conform to the bone are provided with a curvature that conforms to the bone. The bone shape is determined using ultrasonic detection, ensuring that the large rotor-side fixing extension 1, the interrotor ridge-side fixing extension 2, and the interrotor line-side fixing extension 3 can conform to the bone surface during 3D printing. To reduce collateral damage, the outer surfaces of the large rotor-side fixing extension 1, the interrotor ridge-side fixing extension 2, and the interrotor line-side fixing extension 3 are smooth. The large rotor-side fixing extension 1, the interrotor ridge-side fixing extension 2, the interrotor line-side fixing extension 3, and the guide tube 4 are integrally formed.

[0016] When this utility model is used, its specific operation is as follows: When using it, cut the skin, peel the muscle down to the bone, and then... Figure 3 As shown, the greater trochanter-side fixation extension 1, the intertrochanteric crest-side fixation extension 2, and the intertrochanteric line-side fixation extension 3 are secured to the femoral surface. Slight shaking is used to allow the bone surface to adhere to the concave portions of the greater trochanter-side fixation extension 1, the intertrochanteric crest-side fixation extension 2, and the intertrochanteric line-side fixation extension 3. Next, the position guide positioning spatula 5 of the position guide is placed against the gluteal tuberosity 12. The position of the position guide guide tube 6 is adjusted using the position guide handle 7 to ensure that the femoral head 8, femoral neck 9, greater trochanter 11, guide tube 4, and position guide guide tube 6 are aligned on the same axis. At this point, Kirschner wires can be inserted. After insertion, the position guide is removed, and the guide tube 4 is gently shaken and dragged to detach the greater trochanter-side fixation extension 1, the intertrochanteric crest-side fixation extension 2, and the intertrochanteric line-side fixation extension 3 from the femur. Finally, the wound can be sutured.

[0017] In summary, the customized femoral neck fracture fns guide of this utility model embodiment, by adding a 3D-printed guide tube 4 to the position guide, and a greater trochanter-side fixation extension 1, an intertrochanteric crest-side fixation extension 2, and an intertrochanteric line-side fixation extension 3 for fixing the guide tube 4, makes the insertion of Kirschner wires smoother, effectively restricts the range of motion of Kirschner wires, and allows them to stably enter the central axis of the femoral head 8, femoral neck 9, and greater trochanter 11. This can effectively improve the stability of Kirschner wires and the success rate of surgery, and effectively ensure the smooth operation of the surgery.

[0018] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In the description of this specification, the use of terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0021] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A custom femoral neck bone fracture guide, comprising a guide tube (4), characterized in that, The guide tube (4) is fixedly connected to the base at the bottom. The upper part of the base extends toward the greater trochanter (11) to form a greater trochanter side fixed extension (1). One side of the base extends toward the intertrochanter ridge (10) to form an intertrochanter ridge side fixed extension (2). The other side of the base extends toward the intertrochanter line to form a side fixed extension (3). The fixed base formed by the greater trochanter side fixed extension (1), the intertrochanter ridge side fixed extension (2), and the intertrochanter line side fixed extension (3) partially surrounds the greater trochanter (11) and the gluteal tuberosity (12). The guide tube (4) and the femoral neck (9) are on the same axis.

2. The customized femoral neck bone fracture guide of claim 1, wherein, The large rotor side fixing extension (1), the inter-rotor ridge side fixing extension (2) and the inter-rotor line side fixing extension (3) have a curved surface that fits the bone on the side that fits the bone.

3. The customized femoral neck bone fracture guide of claim 2, wherein, The outer surfaces of the large rotor side fixed extension (1), the inter-rotor ridge side fixed extension (2), and the inter-rotor line side fixed extension (3) are smooth.

4. The customized femoral neck bone fracture guide of claim 1, wherein, The large rotor side fixed extension (1), the inter-rotor ridge side fixed extension (2), the inter-rotor line side fixed extension (3) and the guide tube (4) are integrally formed.

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