Auxiliary device for reduction of femoral neck and femoral intertrochanteric fracture or combined subtrochanteric fracture

Abstract

The invention provides an auxiliary device for reduction of femoral neck and femoral intertrochanteric fracture or combined subtrochanteric fracture, which comprises a femoral neck chuck, a tightening device, a handheld part connected with the femoral neck chuck, an intramedullary nail guide needle guider and a femoral neck guide needle guider, two developing mark points are arranged on the middle line of the femoral neck chuck and located on the middle line of the femoral neck. For femoral neck fracture, small openings of two longitudinal incisions are inserted into the femoral neck clamping head, the femoral neck clamping head clamps the femoral neck, on one hand, positioning can be achieved through two developing points, the femoral neck can be located on the horizontal center line of the femoral neck, and two normal perspective points are overlapped; on the other hand, the femoral neck can be clamped by the femoral neck chuck through the locking tightener to assist in reduction, and rotation displacement, angulation displacement and lateral displacement (front side displacement, rear side displacement, inner side displacement and outer side displacement) of femoral neck fracture and femoral intertrochanteric fracture are corrected.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary devices, and particularly relates to a reduction auxiliary device for femoral neck and intertrochanteric fractures or fractures combined with subtrochanteric fractures. Background Art

[0002] The best treatment for femoral neck fracture is closed reduction and internal fixation. As long as there is a satisfactory reduction, most internal fixation methods can achieve a healing rate of 80% to 90%. Therefore, the treatment principles for femoral neck fractures should be: early atraumatic reduction, reasonable multiple nail fixation, and early rehabilitation. Intertrochanteric fracture is one of the most common hip fractures in clinical practice, and it is more common in the elderly. According to statistics, its onset age is 5 to 6 years later than that of femoral neck fracture. Its incidence accounts for 3% to 4% of all fractures and 35.7% of hip fractures. Currently, surgical treatment is given priority for femoral neck fractures, intertrochanteric (intertrochanteric) fractures, and intertrochanteric (intertrochanteric) combined with subtrochanteric fractures. However, the following technical defects still exist when using current instruments during surgery: 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 femoral neck coronal plane fracture. The above fracture types are often difficult to correct using current traction beds and prying techniques, or can only barely meet the reduction standards after a long operation time, more fluoroscopy times, and greater trauma, but it is often difficult to meet the anatomical reduction standards; 2) After the femoral neck fracture is well reduced, multiple fluoroscopy and adjustments are required when using a guide needle to drill from the lateral cortex of the femur toward the femoral neck and femoral head, including the needle entry point, neck-shaft angle, and anteversion angle. Each guide needle must be repeatedly examined in the anteroposterior and lateral positions, resulting in a long operation time and great trauma. Sometimes, the guide needle is adjusted multiple times, which may cause loss of reduction and decreased holding power of the hollow nail. 3) Intertrochanteric (intertrochanteric) fractures and intertrochanteric (intertrochanteric) combined with subtrochanteric fractures are currently basically reduced by closed reduction on a traction bed, but fracture reduction is often difficult. The negative support of the medial cortex above the lesser trochanter of the femur is difficult to correct. Rotational displacement, anterior displacement, posterior displacement, increased or decreased neck-shaft angle, and increased or decreased anteversion angle are difficult to correct quickly. The insertion point of the guide needle at the apex of the greater trochanter needs to rely on the surgeon's fingers to touch the greater trochanter tip before inserting the guide needle. The error rate is high, and the insertion point is prone to deviation from the front, back, inside or outside. Multiple anteroposterior and lateral views are required, and multiple adjustments may be required. Clinicians reported that if the guide needle is inserted smoothly, it will save a lot of time; conversely, if it is not smooth, this step is also the most time-consuming; 4) The insertion point of the guide needle at the apex of the greater trochanter needs to rely on the surgeon's finger to touch the greater trochanter tip before drilling the guide needle. The guide needle is inserted in the direction of the finger, which has a high error rate. The insertion point is prone to deviation to the front, back, inside or outside, and multiple fluoroscopy of the frontal and lateral positions are required. Multiple adjustments may be required, and the gloves are easily torn when the Kirschner wire is inserted, which can easily cause iatrogenic infection or the guide needle to pierce the finger, causing occupational exposure to the surgeon; 5) When drilling the spiral blade guide needle into the intertrochanteric (intertrochanteric) fracture, intertrochanteric (intertrochanteric) combined with subtrochanteric fracture, the insertion point and anteversion angle of the guide needle need to be drilled, fluoroscopy, and adjusted multiple times, which wastes a lot of time, causes greater trauma, and causes more bleeding.

[0003] Therefore, how to design a reduction auxiliary device for femoral neck and intertrochanteric fracture or combined subtrochanteric fracture has become an urgent problem to be solved. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a reduction auxiliary device for femoral neck and intertrochanteric fracture or combined subtrochanteric fracture to solve at least one of the above technical problems.

[0005] The technical solution of the present invention is: a femoral neck and intertrochanteric fracture or combined subtrochanteric fracture reduction auxiliary device, including a femoral head, a femoral neck chuck, a tightener, a handheld part connected to the femoral neck chuck, an intramedullary nail guide needle guide, and a femoral neck guide needle guide, characterized in that: the handheld part clamps the femoral neck through the femoral neck chuck, two small incisions are arranged on the femoral head, and the two femoral neck chucks are respectively located in the small incisions; two development marking points are arranged on the midline of the femoral neck chuck, the two development marking points are located on the midline of the femoral neck, and the two development marking points overlap when the two points are viewed in the frontal perspective.

[0006] The invention treats femoral neck fractures by inserting femoral neck chucks through two small openings of longitudinal incisions, and the femoral neck chucks clamp the femoral neck. On the one hand, the two imaging points can be positioned at the level of the midline of the femoral neck, and the two points of the anteroposterior perspective overlap; on the other hand, the femoral neck chuck can be clamped by the locking constrictor to assist in reduction, so as to correct the rotational displacement, angular displacement, and lateral displacement (anterior displacement, posterior displacement, medial displacement, and lateral displacement) of femoral neck fractures and intertrochanteric fractures. The femoral neck fracture does not need to be inserted into a slider, and does not need to be inserted into a guide pin or Kirschner wire with an arc, so that the femoral neck fractures of the prior art often have rotational displacement, anterior displacement, posterior displacement, enlargement or reduction of the neck-shaft angle, enlargement or reduction of the anteversion angle, and femoral neck coronal fracture. The above fracture types are often difficult to correct using the current traction bed and prying technology. It can correct the technical defects that often cannot meet the anatomical reduction standards after a long operation time, more fluoroscopy times and greater trauma; it can achieve simple and precise operation, achieve anatomical reduction, reduce the chance of femoral head necrosis, have less trauma, less bleeding, greatly reduce the number of fluoroscopy times, reduce the impact of radiation on patients and medical staff, and have lower requirements for operators, save time, and increase the success rate of surgery, creating favorable conditions for surgical clinical work; after installing the femoral neck guide needle guide, the femoral neck guide needle can be smoothly inserted. Because the femoral neck guide needle guide has an anteversion angle and neck-shaft angle that conform to the femoral neck anatomy, it can avoid the guide needle penetrating the femoral neck cortex and causing surgical failure, avoid multiple guide needle drilling, avoid multiple fluoroscopy, 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 through the longitudinal incision to clamp the femoral neck. A baffle is arranged between the two femoral neck clamps. A slider with a constrictor is arranged on the baffle. A curved guide pin is also arranged on the chute of the baffle. In the anteroposterior view, the guide pin is inserted from the apex of the greater trochanter of the femur, and in the lateral view, it is inserted from the middle 1 / 3 of the anterior greater trochanter and on the bisector of the femoral head and femoral neck.

[0008] For the intertrochanteric fracture of the femur in the present invention, a 2-3 cm longitudinal incision is made 2 cm above the tip of the greater trochanter of the femoral head. The broad fascia is incised, the femoral neck clamps are placed, the slider is placed and locked. The elastic baffle is closely attached to the inner edge of the greater trochanter tip. The curved guide pin (or Kirschner wire) is inserted along the chute of the baffle by blind insertion without additional positioning. Through the physical positioning of the femoral neck clamps, the slider and the chute, the guide pin (or Kirschner wire) will necessarily be located at the apex of the greater trochanter tip (anteroposterior view), at the midline level of the femoral neck and femoral head, that is, at the junction of the middle 1 / 3 of the anterior greater trochanter (lateral view), which conforms to the current needle insertion point, solving the technical defect of the prior art that the apex of the greater trochanter tip is felt by fingers and the guide pin (or Kirschner wire) is inserted along the finger direction, with the disadvantages of inaccuracy, the need for repeated fluoroscopy in the anteroposterior and lateral views, long operation time, more bleeding and a large radiation dose; and when inserting the guide pin (or Kirschner wire), it is easy to puncture the glove, which is likely to cause iatrogenic infection or the Kirschner wire to puncture the finger, resulting in occupational exposure to the operator. By installing the femoral greater trochanter apex locator, the guide pin can be quickly and accurately placed at the apex of the greater trochanter (anteroposterior view), at the junction of the middle 1 / 3 of the anterior greater trochanter or on the bisector of the femoral head and femoral neck (lateral view) without fluoroscopy. Then, by installing the femoral neck guide pin guide, the spiral blade can be smoothly placed in the same principle and method. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the front view of the installation structure of the present invention.

[0010] Figure 2 It is the right view of the installation structure of the present invention.

[0011] Figure 3 is Figure 2 the A-A sectional view of.

[0012] In the figure: 1. femoral head; 2. femoral neck; 3. imaging marker point; 4. femoral neck clamp; 5. baffle; 6. slider; 7. guide pin; 8. holding part; 9. guide; 10. sleeve. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Refer to Figures 1-3, the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0015] Example 1. A reduction assistance device for femoral neck fractures and intertrochanteric fractures or combined subtrochanteric fractures. When dealing with femoral neck fractures, refer to Figure 1, including a femoral head 1, a femoral neck chuck 4, a tightener, a hand-held part 8 connected to the femoral neck chuck 4, an intramedullary nail guide needle guide, and a femoral neck guide needle guide, characterized in that: the hand-held part 8 clamps the femoral neck 2 through the femoral neck chuck 4, two small incisions are arranged on the femoral head 1, and the two femoral neck chucks 4 are respectively located in the small incisions; two developing marking points 3 are arranged on the midline of the femoral neck chuck 4, the two developing marking points 3 are located on the midline of the femoral neck 2, and the two developing marking points 3 overlap during the frontal perspective. The invention treats femoral neck fractures by inserting femoral neck chucks through two small openings of longitudinal incisions, and the femoral neck chucks clamp the femoral neck. On the one hand, the two imaging points can be positioned at the level of the midline of the femoral neck, and the two points of the anteroposterior perspective overlap; on the other hand, the femoral neck chuck can be clamped by the locking constrictor to assist in reduction, so as to correct the rotational displacement, angular displacement, and lateral displacement (anterior displacement, posterior displacement, medial displacement, and lateral displacement) of femoral neck fractures and intertrochanteric fractures. The femoral neck fracture does not need to be inserted into a slider, and does not need to be inserted into a guide pin or Kirschner wire with an arc, so that the femoral neck fractures of the prior art often have rotational displacement, anterior displacement, posterior displacement, enlargement or reduction of the neck-shaft angle, enlargement or reduction of the anteversion angle, and femoral neck coronal fracture. The above fracture types are often difficult to correct using the current traction bed and prying technology. It can correct the technical defects that often cannot meet the anatomical reduction standards after a long operation time, more fluoroscopy times and greater trauma; it can achieve simple and precise operation, achieve anatomical reduction, reduce the chance of femoral head necrosis, have less trauma, less bleeding, greatly reduce the number of fluoroscopy times, reduce the impact of radiation on patients and medical staff, and have lower requirements for operators, save time, and increase the success rate of surgery, creating favorable conditions for surgical clinical work; after installing the femoral neck guide needle guide, the femoral neck guide needle can be smoothly inserted. Because the femoral neck guide needle guide has an anteversion angle and neck-shaft angle that conform to the femoral neck anatomy, it can avoid the guide needle penetrating the femoral neck cortex and causing surgical failure, avoid multiple guide needle drilling, avoid multiple fluoroscopy, and then quickly and smoothly insert the femoral neck screw.

[0016] Embodiment 2: Based on embodiment 1, when intertrochanteric fracture occurs, refer to Figure 2, a longitudinal incision of 2 - 3 cm is made 2 cm above the tip of the greater trochanter of the femoral head 1. Two femoral neck clamps 4 are inserted through the longitudinal incision to clamp the femoral neck. A baffle 5 is arranged between the two femoral neck clamps 4. A slider 6 with a constrictor is arranged on the baffle 5. A curved guide pin 7 is also arranged on the chute of the baffle 5. The guide pin 7 is inserted from the apex of the greater trochanter of the femoral head 1 (anteroposterior view) and the middle - anterior 1 / 3 of the greater trochanter, and on the bisector of the femoral head and femoral neck (lateral view). In the present invention, for intertrochanteric fractures of the femur, a longitudinal incision of 2 - 3 cm is made 2 cm above the tip of the greater trochanter of the femoral head, the fascia lata is incised, the femoral neck clamps are inserted, the slider is inserted and locked. The elastic baffle closely adheres to the inner edge of the greater trochanter tip. The curved guide pin (or Kirschner wire) is inserted along the chute of the baffle by blind insertion without additional positioning. Through the physical positioning of the femoral neck clamps, the slider and the chute, the guide pin (or Kirschner wire) must be located at the apex of the greater trochanter (anteroposterior view), at the mid - line level of the femoral neck and femoral head, that is, at the junction of the middle - anterior 1 / 3 of the greater trochanter (lateral view), which conforms to the current needle - insertion point, solving the technical defects of the prior art that the needle - insertion point of the guide pin at the apex of the greater trochanter needs to rely on the operator's finger to touch the greater trochanter tip and then drill the guide pin, and the guide pin is inserted along the finger direction, with a high error rate. The needle - insertion point is prone to be anterior, posterior, medial or lateral, requiring multiple anteroposterior and lateral fluoroscopies, a long operation time, a large amount of bleeding, and a large radiation dose; it may require multiple adjustments, and when inserting the Kirschner wire, it is easy to pierce the glove, easily causing iatrogenic infection or the guide pin piercing the finger, resulting in occupational exposure to the operator. By installing a femoral greater trochanter vertex locator, the guide pin can be quickly and accurately inserted at the apex of the greater trochanter (anteroposterior view), at the junction of the middle - anterior 1 / 3 of the greater trochanter or on the bisector of the femoral head and femoral neck (lateral view) without fluoroscopy. Then, by installing a femoral neck guide pin guide, the spiral blade can be smoothly inserted by the same principle and method.

[0017] Embodiment 3: On the basis of Embodiment 2, a guide 9 is arranged at one end of the handheld part 8 far from the femoral head 1. The guide 9 is provided with through - holes arranged in an array. The through - holes include reserved holes with a neck - shaft angle of 128° and an anteversion angle of 12°. Each reserved hole is parallel at the above - mentioned angles. In the present invention, by arranging through - holes in an array on the guide, the through - holes include reserved holes with a neck - shaft angle of 128° and an anteversion angle of 12°, and each reserved hole is parallel at the above - mentioned angles. Since the directions of the reserved holes of the guide conform to the normal neck - shaft angle and anteversion angle, and the femoral neck is limited in the front - back range by the femoral neck clamps, thus, when the guide pin is inserted along the guide, it is impossible to be anterior or posterior. Only by ensuring that the extension line of the most distal sleeve is within the inner wall of the femoral neck, or the extension line of the proximal - most sleeve is within the outer wall of the femoral neck, can it be ensured that the guide pin will not be medial or lateral.

[0018] Example 4: On the basis of Example 3, there are 9 reserved holes, which are distributed in three rows and three columns, or can be randomly combined into any one of an equilateral triangle, an inverted triangle, an isosceles triangle, an obtuse triangle, three points in parallel, or a square according to needs. The present invention adopts reserved holes that can be randomly combined into any one of an equilateral triangle, an inverted triangle, an isosceles triangle, an obtuse triangle, three points in parallel, or a square according to needs. When the guide pin is inserted, due to the limitation of the femoral neck chuck in the front, the guide pin will surely not go out from the front side or the rear side.

[0019] Example 5: On the basis of Example 3, a sleeve 10 is arranged in the reserved hole. By loosening the compressor of the slider 6, the angle between the femoral neck chuck 4 and the femoral neck 2 can be adjusted, and the size of the neck-shaft angle of the sleeve 10 can be adjusted within the range of 110° to 140°. The present invention adopts the compressor of the slider to adjust the angle between the femoral neck chuck and the femoral neck, and can adjust the size of the neck-shaft angle of the sleeve within the range of 110° to 140°.

[0020] Example 6: On the basis of Example 5, the femoral neck chuck 4 can also correct the size of the neck-shaft angle by pushing and pulling the femoral neck 2 to avoid varus or valgus; the femoral neck chuck 4 can also restore the anteversion angle of the femoral neck 2 by lifting or pressing down. The present invention adopts pushing and pulling the femoral neck to correct the size of the neck-shaft angle, avoid varus or valgus, and can also restore the anteversion angle of the femoral neck by lifting or pressing down.

[0021] Example 7: On the basis of Example 5, the sleeve 10 is made of metal material and can be radiographed. After inserting the sleeve 10, fluoroscopy is performed; the position of the guide pin 7 to be inserted is judged by the extension line of the sleeve 10. The present invention adopts a sleeve made of metal material, which can be radiographed. After inserting the sleeve, fluoroscopy is performed, and the position of the guide pin (or Kirschner wire) to be inserted is judged by the extension line of the sleeve.

[0022] Example 8: On the basis of Example 5, the handheld part 8 and the compressor are both made of carbon fiber structure; among them, the curved section of the handheld part 8 is made of any one of 304 steel, other high-strength metals, or alloy metals, and the straight section of the handheld part 8 is made of carbon fiber. The handheld part and the compressor of the present invention adopt a carbon fiber structure and do not show up on imaging, so as to avoid affecting fluoroscopy.

[0023] Example 9: On the basis of Example 5, referring to Figure 3 , the baffle 5 is made of elastic metal and can be radiographed. When performing anteroposterior fluoroscopy, it is used to judge whether the baffle 5 is tightly attached to the inner edge of the tip of the greater trochanter; the chute 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. The present invention adopts a slider with a Y-shaped structure. The open end of the Y-shaped structure is located in the dovetail groove of the baffle, and the chute is located on the center line of the baffle. The guide pin can be inserted smoothly along the chute; the baffle is located between the two femoral neck chucks, and the width is selected according to the width of the femoral neck chucks.

[0024] Embodiment Ten: On the basis of Embodiment Five, 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. There are three incisions on the guide 9, and each incision is 0.3 - 0.5 cm long. The width of the guide of the present invention is the same as that of the slider. The guide is made of carbon fiber and does not show up on imaging, avoiding affecting fluoroscopy. The guide has a locking mechanism with the carbon rod of the handheld part and can be loosened or locked at will.

[0025] During specific implementation, the femoral neck chuck 4 holds the femoral neck 2 clamped in the vertical direction, and the handle of the handheld part 8 remains horizontal. There are three sleeves 10 connected to the handle and with a 12° - 15° anteversion angle, which can ensure simple and accurate placement of the femoral neck screw, reduce the number of fluoroscopies, shorten the operation time, and reduce surgical trauma.

[0026] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A device for assisting the reduction of a femoral neck and intertrochanteric fracture or a combined subtrochanteric fracture, comprising a femoral head (1), a femoral neck chuck (4), a tightener, a hand-held portion (8) connected to the femoral neck chuck (4), an intramedullary nail guide pin, and a femoral neck guide pin, characterized in that: The handheld portion (8) clamps the femoral neck (2) via the femoral neck clamp (4); two small incisions are provided on the femoral head (1); the two femoral neck clamps (4) are respectively located in the small incisions; two developing marking points (3) are provided on the midline of the femoral neck clamp (4); the two developing marking points (3) are located on the midline of the femoral neck (2); and the two developing marking points (3) overlap in anteroposterior perspective.

2. A device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture 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), and two femoral neck clamps (4) are inserted from 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 tightener is provided on the baffle (5), and a guide pin (7) with an arc is also provided on the slide groove of the baffle (5), and the guide pin (7) is inserted from the apex of the greater trochanter tip when the femoral head (1) is in the anteroposterior position and the anterior middle 1 / 3 of the greater trochanter when the femoral head (1) is in the lateral position, and on the bisecting line of the femoral head and femoral neck.

3. A device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 2, characterized in that: A guide (9) is provided at one end of the handheld portion (8) away from the femoral head (1), and the guide (9) is provided with through holes arranged in an array, the through holes including reserved holes with a neck-shaft angle of 128° and an anteversion angle of 12°, and each of the reserved holes is parallel at the above angles.

4. A device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 3, characterized in that: The reserved holes are totally 9 holes, which are arranged in three rows and three columns, or can be randomly combined into any one of a regular triangle, an inverted triangle, an isosceles triangle, an obtuse triangle, a three-point parallel, or a square according to needs.

5. The device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 3, characterized in that: A sleeve (10) is arranged 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, and the size of the sleeve (10) neck-shaft angle can be adjusted within the range of 110° to 140°.

6. A device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 5, characterized in that: The femoral neck chuck (4) can also correct the size of the neck-shaft angle by pushing and pulling the femoral neck (2) to avoid varus or valgus; the femoral neck chuck (4) can also restore the anteversion angle of the femoral neck (2) by lifting or pressing down.

7. A device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 5, characterized in that: The sleeve (10) is made of metal and can be developed. After the sleeve (10) is inserted, the position of the guide needle (7) to be inserted can be determined by the extension line of the sleeve (10).

8. The device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 5, characterized in that: The handheld portion (8) and the tightener are both made of carbon fiber structures; the curved section of the handheld portion (8) is made of 304 steel, or any other high-strength metal, or alloy metal, and the straight section of the handheld portion (8) is made of carbon fiber.

9. A device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture 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 in close contact with the inner edge of the greater trochanter tip during frontal perspective. The slide groove of the baffle (5) is a dovetail groove, and the cross section of the slider (6) is a Y-shaped structure, with the open end of the Y-shaped structure located in the dovetail groove.

10. The device for assisting reduction of femoral neck and intertrochanteric fracture or combined subtrochanteric fracture according to claim 5, characterized in that: The width of the guide (9) is consistent with 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) so that it can be loosened or locked at will. Three cutouts are arranged on the guide (9), each of which is 0.3 to 0.5 cm long.

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