A device for assisting in the reduction of femoral neck and intertrochanteric fractures or combined subtrochanteric fractures
Patent Information
- Application Number
- CN202520404754.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-03-10
AI Technical Summary
目前对于股骨颈骨折、股骨转子间（粗隆间）骨折、股骨转子间（粗隆间）合并转子下骨折优先考虑手术治疗，但手术过程中使用目前的器械依然存在以下技术缺陷：1)、股骨颈骨折，经常出现旋转移位、前方移位、后方移位、颈干角变大或变小、前倾角变大或变小、股骨颈冠状面骨折，以上骨折类型使用目前的牵引床及撬拨技术往往难以纠正，或者经历较长手术时间、较多透视次数、更大创伤后才能勉强达到复位标准，但往往难以达到解剖复位标准；2）、股骨颈骨折复位良好后，使用导针从股骨外侧皮质向股骨颈股骨头方向钻入时需要多次透视，多次调整，包括进针点、颈干角和前倾角的方向，每一枚导针都要重复多次透视正侧位，造成手术时间耗费长，创伤大，且有时导针多次调整，可能造成复位丢失，空心钉把持力下降等；3）、股骨转子间（粗隆间）骨折、股骨转子间（粗隆间）合并转子下骨折，目前基本上都是采用牵引床闭合复位，但也经常出现骨折复位困难的情况，股骨小转子上方内侧皮质阴性支撑难以纠正，存在旋转移位、前方移位、后方移位、颈干角变大或变小、前倾角变大或变小时难以快速纠正；大转子尖顶点处的导针进针点需要依赖术者手指摸到大转子尖后再钻入导针，失误性较高，进针点容易偏前、偏后、偏内或偏外，需要多次透视正侧位，可能需要多次调整
[0006] This invention addresses femoral neck fractures by inserting a femoral neck clamp through two small incisions along the longitudinal axis. The clamp grips the femoral neck, allowing for localization via two contrast points positioned at the midline of the femoral neck, with overlap on anteroposterior fluoroscopy. Furthermore, a locking constrictor helps to tighten the clamp, aiding in reduction and correcting rotational, angular, and lateral displacements (anterior, posterior, medial, and lateral) in femoral neck fractures and intertrochanteric fractures. This method eliminates the need for a sliding block or curved guide pins or Kirschner wires, addressing the common issues in existing femoral neck fracture techniques, such as rotational displacement, anterior or posterior displacement, increased or decreased neck-shaft angle, increased or decreased anteversion angle, and coronal plane fractures of the femoral neck. These fracture types often require traction beds and levering techniques. Technical defects that are difficult to correct, or require prolonged surgery, multiple fluoroscopy sessions, and greater trauma to barely achieve the reduction standard, often failing to meet the anatomical reduction standard; can achieve simple and precise operation, anatomical reduction, reduce the chance of femoral head necrosis, less trauma, less bleeding, greatly reduce the number of fluoroscopy sessions, reduce the impact of radiation on patients and medical staff, lower the requirements for the surgeon, save time, and improve the success rate of surgery, creating favorable conditions for surgical clinical work; after installing the femoral neck guide wire, the femoral neck guide wire can be smoothly inserted. Because the femoral neck guide wire has an anteversion angle and neck-shaft angle that conform to the anatomy of the femoral neck, it can avoid the guide wire penetrating the femoral neck cortex, which would lead to surgical failure, avoid multiple drilling of the guide wire, avoid multiple fluoroscopy sessions, and then quickly and smoothly insert the femoral neck screw.
Smart Images
Figure CN224748096U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical auxiliary device technology, specifically to an auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures. Background Technology
[0002] The best treatment for femoral neck fractures is closed reduction and internal fixation. With satisfactory reduction, most internal fixation methods can achieve a healing rate of 80%–90%. Therefore, the treatment principle for femoral neck fractures should be: early non-traumatic reduction, appropriate multiple nail fixation, and early rehabilitation. Intertrochanteric fractures of the femur are one of the most common hip fractures clinically, frequently occurring in the elderly. Statistics show that the age of onset is 5–6 years later than that of femoral neck fractures, accounting for 3%–4% of all fractures and 35.7% of hip fractures. Currently, surgical treatment is the preferred option for femoral neck fractures, intertrochanteric fractures, and intertrochanteric fractures combined with subtrochanteric fractures. However, the current surgical instruments still have the following technical limitations: 1) Femoral neck fractures often present with rotational displacement, anterior displacement, posterior displacement, increased or decreased neck-shaft angle, increased or decreased anteversion angle, and coronal plane fractures of the femoral neck. These fracture types are often difficult to correct using current traction tables and levering techniques, or require a long surgical time, multiple fluoroscopic examinations, and greater trauma to barely achieve the reduction standard, but often fail to meet the anatomical reduction standard; 2) After a good reduction of a femoral neck fracture, multiple fluoroscopic examinations and adjustments are required when using a guide needle to drill from the lateral cortex of the femur towards the femoral head and neck, including adjustments to the needle entry point, neck-shaft angle, and anteversion angle. For example, each guide pin requires multiple fluoroscopic views (anteroposterior and lateral), resulting in prolonged surgery time, significant trauma, and potential loss of reduction due to repeated adjustments. Additionally, the holding force of the cannulated screw may decrease. 3) Intertrochanteric (intertrochanteric) fractures of the femur, and intertrochanteric (intertrochanteric) fractures combined with subtrochanteric fractures, are currently mostly treated with closed reduction using a traction bed. However, fracture reduction difficulties frequently arise. The negative cortical support above the lesser trochanter is difficult to correct, leading to rotational displacement, anterior displacement, posterior displacement, increased or decreased neck-shaft angle, and increased or decreased anteversion angle, making rapid correction challenging. The guide pin insertion point at the tip of the greater trochanter requires the surgeon to locate the tip with their fingers before inserting the guide pin, resulting in a high error rate. The insertion point is prone to being anterior, posterior, medial, or lateral, requiring multiple fluoroscopic views (anteroposterior and lateral) and adjustments. Clinicians report that if the guide needle insertion is smooth, it saves a lot of time; conversely, if it is not smooth, this step is the most time-consuming. 4) The guide needle insertion point at the tip of the greater trochanter requires the surgeon to feel the tip of the greater trochanter with their fingers before drilling the guide needle. The guide needle is inserted in the direction of the fingers, which has a high error rate. The insertion point is easy to be too far forward, too far backward, too far inward or too far outward. Multiple fluoroscopy views are required, and multiple adjustments may be needed. Moreover, when inserting the Kirschner wire, it is easy to puncture the gloves, which can easily cause iatrogenic infection or the guide needle to puncture the fingers, causing occupational exposure for the surgeon. 5) When drilling the guide needle for intertrochanteric (intertrochanteric) fractures of the femur or intertrochanteric (intertrochanteric) fractures combined with subtrochanteric fractures of the femur, the insertion point and anteversion angle of the guide needle need to be drilled, fluoroscopically adjusted multiple times, which wastes more time, causes more trauma, and causes more bleeding.
[0003] Therefore, designing an auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures has become an urgent problem to be solved. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model provides an auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures, so as to solve at least one of the above-mentioned technical problems.
[0005] The technical solution of this utility model is: an auxiliary device for reducing fractures of the femoral neck and intertrochanteric femur or combined subtrochanteric fractures, comprising a femoral head, a femoral neck clamp, a tightening device, a handheld part connected to the femoral neck clamp, an intramedullary nail guide, and a femoral neck guide. The handheld part clamps the femoral neck through the femoral neck clamp. Two small incisions are provided on the femoral head, and the two femoral neck clamps are located within these small incisions. Two radiopaque markers are provided on the midline of the femoral neck clamps, and these two radiopaque markers overlap during anteroposterior fluoroscopy.
[0006] This invention addresses femoral neck fractures by inserting a femoral neck clamp through two small incisions along the longitudinal axis. The clamp grips the femoral neck, allowing for localization via two contrast points positioned at the midline of the femoral neck, with overlap on anteroposterior fluoroscopy. Furthermore, a locking constrictor helps to tighten the clamp, aiding in reduction and correcting rotational, angular, and lateral displacements (anterior, posterior, medial, and lateral) in femoral neck fractures and intertrochanteric fractures. This method eliminates the need for a sliding block or curved guide pins or Kirschner wires, addressing the common issues in existing femoral neck fracture techniques, such as rotational displacement, anterior or posterior displacement, increased or decreased neck-shaft angle, increased or decreased anteversion angle, and coronal plane fractures of the femoral neck. These fracture types often require traction beds and levering techniques. Technical defects that are difficult to correct, or require prolonged surgery, multiple fluoroscopy sessions, and greater trauma to barely achieve the reduction standard, often failing to meet the anatomical reduction standard; can achieve simple and precise operation, anatomical reduction, reduce the chance of femoral head necrosis, less trauma, less bleeding, greatly reduce the number of fluoroscopy sessions, reduce the impact of radiation on patients and medical staff, lower the requirements for the surgeon, save time, and improve the success rate of surgery, creating favorable conditions for surgical clinical work; after installing the femoral neck guide wire, the femoral neck guide wire can be smoothly inserted. Because the femoral neck guide wire has an anteversion angle and neck-shaft angle that conform to the anatomy of the femoral neck, it can avoid the guide wire penetrating the femoral neck cortex, which would lead to surgical failure, avoid multiple drilling of the guide wire, avoid multiple fluoroscopy sessions, and then quickly and smoothly insert the femoral neck screw.
[0007] Preferably, in the case of intertrochanteric fracture of the femur, a 2-3 cm longitudinal incision is made 2 cm above the tip of the greater trochanter of the femoral head. Two femoral neck clamps are inserted into the longitudinal incision to clamp the femoral neck. A baffle is provided between the two femoral neck clamps. A slider with a tightening device is provided on the baffle. A curved guide pin is also provided on the groove of the baffle. In the anteroposterior position, the guide pin is inserted from the tip of the greater trochanter of the femur, and in the lateral position, it is inserted from the anterior middle 1 / 3 of the greater trochanter, on the bisector of the femoral head and femoral neck.
[0008] This invention addresses intertrochanteric fractures of the femur by making a 2-3 cm longitudinal incision 2 cm above the tip of the greater trochanter of the femoral head. The fascia lata is incised, a femoral neck clamp is inserted, and a slider is inserted and locked. An elastic baffle is placed against the inner edge of the tip of the greater trochanter. A curved guide pin (or Kirschner wire) is inserted blindly along the groove of the baffle, requiring no further positioning. Through the physical positioning of the femoral neck clamp, slider, and groove, the guide pin (or Kirschner wire) is necessarily located at the apex of the greater trochanter (anteroposterior position), at the level of the midline of the femoral neck and femoral head, i.e., at the junction of the anterior and middle third of the greater trochanter (lateral position), which conforms to current insertion points and solves the problem of relying on finger palpation in existing techniques. The procedure involves inserting a guide pin (or Kirschner wire) at the tip of the greater trochanter along the direction of the fingers. However, this method is inaccurate, requires repeated fluoroscopy in both anteroposterior and lateral views, has a long operation time, causes significant bleeding, and generates a large amount of radiation. Furthermore, inserting the guide pin (or Kirschner wire) can easily puncture gloves, potentially leading to iatrogenic infections or the Kirschner wire puncturing the fingers, posing a risk of occupational exposure for the surgeon. Alternatively, installing a femoral greater trochanter tip locator allows for quick and precise insertion of the guide pin at the tip of the greater trochanter (anteroposterior view), the junction of the anterior and middle third of the greater trochanter, or the bisector of the femoral head and neck (lateral view) without fluoroscopy. After that, a femoral neck guide pin guide is installed, and the same principle and method are used to successfully insert the helical blade. Attached Figure Description
[0009] Figure 1 This is a front view of the installation structure of this utility model.
[0010] Figure 2 This is a right view of the installation structure of this utility model.
[0011] Figure 3 for Figure 2 AA cross-section view.
[0012] In the figure: 1. Femoral head; 2. Femoral neck; 3. Imaging marker; 4. Femoral neck clamp; 5. Baffle; 6. Slider; 7. Guide needle; 8. Handhold; 9. Guide; 10. Sleeve. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] See Figure 1-3The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore lack substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0015] Example 1: A device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures. For femoral neck fractures, refer to... Figure 1The device includes a femoral head 1, a femoral neck clamp 4, a tightening device, a handheld part 8 connected to the femoral neck clamp 4, an intramedullary nail guide, and a femoral neck guide. Its features include: the handheld part 8 clamps the femoral neck 2 via the femoral neck clamp 4; two small incisions are provided on the femoral head 1, and the two femoral neck clamps 4 are located within these small incisions; two radiopaque markers 3 are provided on the midline of the femoral neck clamp 4, and these two radiopaque markers 3 overlap during anteroposterior fluoroscopy. This invention addresses femoral neck fractures by inserting a femoral neck clamp through two small incisions along the longitudinal axis. The clamp grips the femoral neck, allowing for localization via two contrast points positioned at the midline of the femoral neck, with overlap on anteroposterior fluoroscopy. Furthermore, a locking constrictor helps to tighten the clamp, aiding in reduction and correcting rotational, angular, and lateral displacements (anterior, posterior, medial, and lateral) in femoral neck fractures and intertrochanteric fractures. This method eliminates the need for a sliding block or curved guide pins or Kirschner wires, addressing the common issues in existing femoral neck fracture techniques, such as rotational displacement, anterior or posterior displacement, increased or decreased neck-shaft angle, increased or decreased anteversion angle, and coronal plane fractures of the femoral neck. These fracture types often require traction beds and levering techniques. Technical defects that are difficult to correct, or require prolonged surgery, multiple fluoroscopy sessions, and greater trauma to barely achieve the reduction standard, often failing to meet the anatomical reduction standard; can achieve simple and precise operation, anatomical reduction, reduce the chance of femoral head necrosis, less trauma, less bleeding, greatly reduce the number of fluoroscopy sessions, reduce the impact of radiation on patients and medical staff, lower the requirements for the surgeon, save time, and improve the success rate of surgery, creating favorable conditions for surgical clinical work; after installing the femoral neck guide wire, the femoral neck guide wire can be smoothly inserted. Because the femoral neck guide wire has an anteversion angle and neck-shaft angle that conform to the anatomy of the femoral neck, it can avoid the guide wire penetrating the femoral neck cortex, which would lead to surgical failure, avoid multiple drilling of the guide wire, avoid multiple fluoroscopy sessions, and then quickly and smoothly insert the femoral neck screw.
[0016] Example 2: Based on Example 1, in the case of intertrochanteric fracture of the femur, refer to... Figure 2A 2-3 cm longitudinal incision is made 2 cm above the tip of the greater trochanter of the femoral head 1. Two femoral neck clamps 4 are inserted into the longitudinal incision to clamp the femoral neck. A baffle 5 is provided between the two femoral neck clamps 4. A slider 6 with a tightening device is provided on the baffle 5. An arc-shaped guide pin 7 is also provided on the groove of the baffle 5. The guide pin 7 is inserted from the tip of the greater trochanter of the femoral head 1 (anteroposterior position) and the anterior middle 1 / 3 of the greater trochanter, and on the bisector of the femoral head and femoral neck (lateral position). This invention addresses intertrochanteric fractures of the femur by making a 2-3 cm longitudinal incision 2 cm above the tip of the greater trochanter of the femoral head. The fascia lata is incised, a femoral neck clamp is inserted, and a slider is inserted and locked. An elastic baffle is placed against the inner edge of the greater trochanter tip. A curved guide pin (or Kirschner wire) is inserted blindly along the groove of the baffle, requiring no further positioning. Through the physical positioning of the femoral neck clamp, slider, and groove, the guide pin (or Kirschner wire) is necessarily located at the tip of the greater trochanter (anteroposterior view), at the level of the midline of the femoral neck and femoral head, i.e., at the junction of the anterior and middle third of the greater trochanter (lateral view). This aligns with current needle insertion points, solving the problem of existing techniques where the needle insertion point at the tip of the greater trochanter relies on the surgeon's touch. The procedure involves drilling the guide pin after reaching the tip of the greater trochanter, inserting it in the direction of the finger. This method has a high error rate, as the insertion point is prone to being too far forward, backward, medial, or lateral. It requires multiple fluoroscopic views (anteroposterior and lateral), resulting in a long operation time, significant bleeding, and a large radiation dose. It may require multiple adjustments, and inserting the Kirschner wire can easily puncture gloves, leading to iatrogenic infections or the guide pin puncturing the finger, posing a technical defect that exposes the surgeon to occupational exposure. Installing the femoral greater trochanter apex locator allows for quick and precise insertion of the guide pin at the tip of the greater trochanter (anteroposterior view), the junction of the anterior and middle third of the greater trochanter, or the bisector of the femoral head and neck (lateral view) without fluoroscopy. After that, the femoral neck guide pin guide is installed, and the spiral blade is successfully inserted using the same principle and method.
[0017] Example 3: Based on Example 2, a guide 9 is provided at the end of the handheld part 8 away from the femoral head 1. The guide 9 has an array of through holes, including reserved holes for a 128° neck-shaft angle and a 12° anteversion angle, with each reserved hole parallel to the aforementioned angles. This utility model uses an array of through holes on the guide, including reserved holes for a 128° neck-shaft angle and a 12° anteversion angle, with each reserved hole parallel to the aforementioned angles. Since the directions of the reserved holes on the guide all conform to the normal neck-shaft angle and anteversion angle, and the femoral neck clamp limits the anterior-posterior range at the femoral neck, the guide needle cannot be inserted too far forward or backward along the guide. It is only necessary to ensure that the extension line of the farthest sleeve is within the medial wall of the femoral neck, or the extension line of the nearest sleeve is within the lateral wall of the femoral neck, to guarantee that the guide needle will not deviate inward or outward.
[0018] Example 4: Based on Example 3, the reserved holes consist of 9 holes arranged in three rows and three columns, or can be arbitrarily combined into any of the following shapes: equilateral triangle, inverted triangle, isosceles triangle, obtuse triangle, three-point parallel, or square. This utility model uses reserved holes that can be arbitrarily combined into any of the following shapes: equilateral triangle, inverted triangle, isosceles triangle, obtuse triangle, three-point parallel, or square. When the guide needle is inserted, due to the restriction of the femoral neck clamp at the front, the guide needle will not exit from the front or back.
[0019] Example 5: Based on Example 3, a sleeve 10 is provided in the reserved hole. Loosening the tightening device of the slider 6 allows adjustment of the angle between the femoral neck chuck 4 and the femoral neck 2, enabling adjustment of the sleeve 10 neck angle within the range of 110° to 140°. This invention uses the tightening device of the slider to adjust the angle between the femoral neck chuck and the femoral neck, allowing adjustment of the sleeve neck angle within the range of 110° to 140°.
[0020] Example 6: Based on Example 5, the femoral neck clamp 4 can also correct the size of the neck-shaft angle by pushing and pulling the femoral neck 2, avoiding varus or valgus; the femoral neck clamp 4 can also restore the anteversion angle of the femoral neck 2 by lifting or pressing down. This utility model uses pushing and pulling the femoral neck to correct the size of the neck-shaft angle, avoiding varus or valgus, and can also restore the anteversion angle of the femoral neck by lifting or pressing down.
[0021] Example 7: Based on Example 5, the sleeve 10 is made of metal and is capable of being developed. After inserting the sleeve 10, it is visualized; the position of the guide needle 7 to be inserted is determined by the extension line of the sleeve 10. This utility model uses a metal sleeve that is capable of being developed. After inserting the sleeve, it is visualized, and the position of the guide needle (or Kirschner wire) to be inserted is determined by the extension line of the sleeve.
[0022] Example 8: Based on Example 5, the compressor is made of carbon fiber; the curved section of the handle 8 is made of 304 steel, or any other high-strength metal or alloy metal, while the straight section of the handle 8 is made of carbon fiber. The straight section of the handle and the compressor of this invention are made of carbon fiber, which does not develop light and avoids affecting radiography.
[0023] Example 9: Based on Example 5, with reference to... Figure 3 The baffle 5 is made of elastic metal and can be visualized. During fluoroscopy, it is used to determine whether the baffle 5 is tightly attached to the inner edge of the greater trochanter tip. The groove of the baffle 5 is a dovetail groove, and the cross-section of the slider 6 is Y-shaped, with the open end of the Y-shaped structure located within the dovetail groove. The slider of this invention adopts a Y-shaped structure, with the open end of the Y-shaped structure located within the dovetail groove of the baffle. The groove is located on the center line of the baffle, allowing the guide needle to be inserted along the groove. The baffle is located between two femoral neck clamps, and its width is selected according to the width of the femoral neck clamps.
[0024] Example 10: Based on Example 5, the width of the guide 9 is the same as that of the slider 6. The guide 9 is made of carbon fiber and has a locking mechanism with the carbon rod of the handheld part 8, which can be loosened or locked at will. The guide 9 has three slits, each 0.3-0.5 cm long. In this invention, the guide width is the same as that of the slider, the guide is made of carbon fiber, it does not develop light, thus avoiding affecting the transparency; the guide has a locking mechanism with the carbon rod of the handheld part, which can be loosened or locked at will.
[0025] In practice, the femoral neck chuck 4 clamps the femoral neck 2 in a vertical direction, the handle of the handpiece 8 is kept horizontal, and three sleeves 10 are connected to the handle with a forward tilt angle of 12° to 15°. This ensures that the femoral neck screw is placed simply and accurately, reduces the number of fluoroscopy sessions, shortens the operation time, and reduces surgical trauma.
[0026] The above-described embodiments are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A device for reducing fractures of the femoral neck and intertrochanteric femur or combined subtrochanteric fractures, comprising a femoral head (1), a femoral neck clamp (4), a tightening device, a handheld part (8) connected to the femoral neck clamp (4), an intramedullary nail guide wire guide, and a femoral neck guide wire guide, characterized in that: The handheld part (8) clamps the femoral neck (2) through the femoral neck clamp (4). Two small incisions are provided on the femoral head (1), and the two femoral neck clamps (4) are located in the small incisions respectively. Two imaging markers (3) are provided on the midline of the femoral neck clamp (4). The two imaging markers (3) are located on the midline of the femoral neck (2), and the two imaging markers (3) overlap during anteroposterior fluoroscopy.
2. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 1, characterized in that: A 2-3 cm longitudinal incision is made 2 cm above the tip of the greater trochanter of the femoral head (1). Two femoral neck clamps (4) are inserted into the longitudinal incision to clamp the femoral neck. A baffle (5) is set between the two femoral neck clamps (4). A slider (6) with a tightening device is set on the baffle (5). A curved guide needle (7) is also set on the groove of the baffle (5). The guide needle (7) is inserted at the tip of the greater trochanter when the femoral head (1) is in the anterior position and at the anterior middle 1 / 3 of the greater trochanter when the femoral head (1) is in the lateral position, on the bisector of the femoral head and femoral neck.
3. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 2, characterized in that: The handheld part (8) is provided with a guide (9) at the end away from the femoral head (1). The guide (9) is provided with an array of through holes, including reserved holes with a neck-shaft angle of 128° and an anteversion angle of 12°. Each reserved hole is parallel to the above angle.
4. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 3, characterized in that: There are a total of 9 reserved holes, arranged in three rows and three columns, or they can be combined arbitrarily to form any of the following shapes: equilateral triangle, inverted triangle, isosceles triangle, obtuse triangle, three parallel points, or square.
5. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 3, characterized in that: A sleeve (10) is provided in the reserved hole. By loosening the tightener of the slider (6), the angle between the femoral neck chuck (4) and the femoral neck (2) can be adjusted. The size of the neck angle of the sleeve (10) can be adjusted within the range of 110° to 140°.
6. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 5, characterized in that: The femoral neck clamp (4) can also correct the size of the neck-shaft angle by pushing and pulling the femoral neck (2) to avoid inversion or eversion; the femoral neck clamp (4) can also restore the anteversion angle of the femoral neck (2) by lifting or pressing it down.
7. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 5, characterized in that: The sleeve (10) is made of metal and can be developed. After inserting the sleeve (10), the position of the guide needle (7) to be inserted can be determined by the extension line of the sleeve (10).
8. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 5, characterized in that: The compressor is made of carbon fiber; the curved section of the handle (8) is made of 304 steel, or high-strength metal, or alloy metal, and the straight section of the handle (8) is made of carbon fiber.
9. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 5, characterized in that: The baffle (5) is made of elastic metal and can be developed. It is used to determine whether the baffle (5) is close to the inner edge of the large rotor tip during orthogonal fluoroscopy. The groove of the baffle (5) is a dovetail groove, and the cross-section of the slider (6) is a Y-shaped structure. The open end of the Y-shaped structure is located in the dovetail groove.
10. The auxiliary device for reducing femoral neck and intertrochanteric fractures or combined subtrochanteric fractures according to claim 5, characterized in that: The width of the guide (9) is the same as that of the slider (6). The guide (9) is made of carbon fiber and has a locking mechanism with the carbon rod of the handheld part (8), which can be loosened or locked at will. The guide (9) has three cuts, each cut being 0.3 to 0.5 cm long.