Combined reduction anatomical plate and instrumentation for posterior approach acetabular fractures

Abstract

This invention discloses a combined anatomical plate and operating tools for posterior approach reduction of acetabular fractures, including a locking plate and a reduction plate. The locking plate is an arc-shaped strip plate that fits above the greater sciatic notch and has screw holes. The locking plate has a screw rod with a nut. The reduction plate includes a first plate, a second plate, and a third plate, all integrally formed and each having screw holes. The first plate is curved to fit the anatomical structure above the acetabulum. The second plate intersects with the locking plate. The third plate is curved to fit the anatomical structure of the acetabular quadrilateral. In this invention, the third plate is tightly fitted to the quadrilateral, and the first screw hole of the locking plate is fixed to the ischial tuberosity with screws. The reduction tool is used to lift and twist the reduction plate assembly. The lifting action of the third plate on the quadrilateral pulls the quadrilateral protruding into the pelvic cavity outward, achieving reduction and fixation of the central dislocation of the hip joint.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a acetabular fracture reduction plate and its operating tools. Background Technology

[0002] With the increasing incidence of traffic accidents and industrial accidents, the incidence of acetabular fractures caused by high-energy injuries is also gradually increasing. Studies show that the incidence of acetabular fractures is increasing year by year, and the age of onset is gradually increasing. At the same time, the proportion of acetabular fractures requiring open reduction and internal fixation is also increasing. The acetabulum is located deep in the anatomy, surrounded by many important blood vessels and nerves, and acetabular fractures often involve multiple complications, resulting in a high incidence of postoperative complications. Acetabular fractures are highly dependent on surgical reduction and fixation. Complex acetabular fractures include fractures of the posterior column and posterior wall, transverse and posterior wall fractures, T-shaped fractures, fractures of the anterior column and posterior transverse half, and double-column fractures. These types of fractures involve the quadrilaterals of the pelvis and are often accompanied by severe central hip dislocation. Therefore, surgical treatment is characterized by difficulties in fracture reduction and fixation, significant surgical bleeding, large trauma, easy residual fractures, and sequelae.

[0003] Traditional pelvic plates suffer from difficulties in intraoperative plate shaping, poor fit between the plate and the pelvic anatomical structure, limited fixation points, and inadequate support for quadrilateral fractures, failing to meet the requirements for precise reduction and robust fixation in complex acetabular fractures. Therefore, numerous novel pelvic plates and surgical techniques have been widely adopted clinically, such as the quadrilateral anatomical plate (Chinese patent: CN105055010A, titled "A Quadrilateral Support Plate for Comminuted Acetabular Fractures," and CN208404810U, titled "A Combined Fixation Plate for Acetabular Fractures"). These novel pelvic plates offer some support and restraint for quadrilateral fractures. These plates require an anterior approach and are only suitable for anterior wall fractures, anterior column fractures, and transverse fractures. When combined with posterior column lag screws, they can accommodate anterior column and posterior transverse fractures. Complex acetabular fractures, such as fractures of the posterior column and posterior wall, transverse and posterior wall fractures, T-shaped fractures, and double-column fractures, often require a combined posterolateral approach to reduce and fix the posterior column of the acetabulum. This combined anterior and posterior approach inevitably increases the patient's anesthesia time and risks, prolongs the operation time, increases intraoperative blood loss, and exacerbates surgical trauma. Traditionally, for the reduction of central dislocations of the posterior column of the acetabulum and ischial body along with the femoral head dislocated into the pelvis, tools such as bone hooks are used to hold the fractured quadrilateral body, and then a surgical assistant pulls it outwards while simultaneously using lower limb traction to reduce the hip joint. This reduction technique is difficult to achieve anatomical reduction of the acetabulum because: firstly, the surgical assistant's physical strength is limited; secondly, there is no corresponding counterforce at the other end of the fracture, and with heavy traction, the patient can easily be lifted off the operating table. Furthermore, anatomical reduction is not possible in some patients. To avoid these shortcomings… Clinically, pelvic plate reduction is sometimes used. One end of the plate is fixed to the ischial tuberosity and the greater incisor margin. By pulling the plate and simultaneously pressing on the proximal fracture end, a combined force is generated to reduce the acetabulum. However, the screws fixed to the ischial tuberosity and the greater incisor margin are prone to pull-out due to insufficient holding force. In addition, when reducing the posterior column of the acetabulum with a plate, the reduction torque only acts on the posterior half of the acetabulum. When the posterior half of the acetabulum is pulled, the entire posterior column will twist, and the dislocated quadrilateral cannot be simultaneously translated and reduced with the posterior half of the acetabulum. Furthermore, when traditional pelvic reconstruction plates are used for combined anterior column pelvic fractures, the fixation screws are easily implanted into the fracture suture because the fracture line is in the same direction as the plate insertion, leading to unreliable fixation. For anterior column fracture fixation, a separate plate fixation across the fracture line is required, increasing surgical trauma and difficulty. Therefore, there is an urgent need to improve existing anatomical plates to meet the needs of use. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this invention is to provide a combined anatomical plate and operating tools for posterior approach acetabular fracture reduction.

[0005] This composite anatomical plate for posterior approach acetabular fracture reduction includes a locking plate and a reduction plate. The locking plate is an arc-shaped strip plate that fits above the greater sciatic notch and has screw holes. The first screw hole is curved to fit the anatomical structure above the ischial tuberosity. The locking plate has a screw with a nut. The reduction plate includes a first plate, a second plate, and a third plate, which are integrally formed and each has screw holes. The first plate is curved to fit the anatomical structure above the acetabulum, the second plate intersects with the locking plate, and the third plate is curved to fit the anatomical structure of the acetabular quadrilateral.

[0006] For example, the screw holes on the second steel plate are oblong holes to facilitate adjustment of the position of the reset steel plate.

[0007] For example, to facilitate application to different fractures, a first auxiliary plate is provided on the outer side of the first steel plate, and a second auxiliary plate is provided at one end of the locking plate.

[0008] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0009] The reset clamp 1 includes a first clamp arm and a second clamp arm. The middle part of the first clamp arm and the second clamp arm are connected in a scissor shape. The front end of the first clamp arm is provided with a positioning plate 1, which has a screw hole. The front end of the second clamp arm is provided with a hook 1, which is perpendicular to the second clamp arm and bent towards the first clamp arm.

[0010] The second reduction clamp includes a third clamp arm and a fourth clamp arm. The third clamp arm and the fourth clamp arm are connected in the middle in a scissor shape. The front end of the third clamp arm is provided with a positioning plate 2, which has a screw hole. The front end of the fourth clamp arm is provided with a hook 2, which is bent relative to the fourth clamp arm. When the second reduction clamp is used to reduce a left acetabular fracture, its hook 2 bends to the left. When the second reduction clamp is used to reduce a right acetabular fracture, its hook 2 bends to the right.

[0011] A crowbar is a rod-shaped structure.

[0012] For example, to facilitate the separation of the first clamp arm, the second clamp arm, the third clamp arm, and the fourth clamp arm, a stop block is provided in the middle of the first clamp arm and the third clamp arm. A connecting shaft is provided between the stop block and the first clamp arm, and between the stop block and the third clamp arm. A stop block hole that mates with the stop block is provided in the middle of the second clamp arm and the fourth clamp arm.

[0013] For example, to facilitate operation, finger holes are provided at the rear ends of the first, second, third, and fourth clamp arms.

[0014] For example, the rear ends of the second and fourth clamp arms are equipped with locking blocks, and the rear ends of the first and third clamp arms are connected to L-shaped spring pieces. One side of the L-shaped spring piece is equipped with several locking teeth, which engage with the locking blocks. When resetting, the rear ends of the first and second clamp arms are pinched, and the locking block at the rear end of the second clamp arm engages with the locking teeth of the L-shaped spring piece to fix the second clamp arm. This saves effort during the resetting process. Similarly, the same applies to the third and fourth clamp arms.

[0015] For example, the pry bar has a handle at the rear end, and the handle has anti-slip particles.

[0016] This invention relates to a combined anatomical plate and operating tools for posterior approach reduction of acetabular fractures. Compared with existing technologies, its advantages are as follows: 1. This invention can reduce hip joint fractures of the quadrilateral body combined with central dislocation of the hip joint. The third plate of the reduction plate is tightly attached to the quadrilateral body. The second plate of the reduction plate and the screw of the locking plate are connected to form a combination of the two plates by nuts. During the operation, the first screw hole of the locking plate is fixed to the ischial tuberosity with screws, forming a fulcrum with the ischial tuberosity as the fulcrum. The pre-implanted screws at the proximal end of the fracture are used to lift and twist the reduction plate combination using the leverage of the reduction tool. The third plate of the reduction plate, which is tightly attached to the quadrilateral body, lifts the quadrilateral body protruding into the pelvic cavity outward to achieve the reduction and fixation of central dislocation of the hip joint.

[0017] 2. In this invention, the first auxiliary plate extends outward and bends to match the shape of the posterior wall of the acetabulum, which can block the reduction of severe posterior wall fractures of the acetabulum, thus avoiding the shortcomings of traditional steel plates which are narrow and therefore cannot reduce and fix posterior wall fractures involving the acetabular labrum.

[0018] 3. Traditional pelvic reconstruction plates, when used for combined anterior column pelvic fractures, often result in unreliable fixation because the fracture line and plate insertion direction are aligned, making it easy for screws to implant into the fracture suture. For anterior column fractures, a separate plate spanning the fracture line is required, increasing surgical trauma and difficulty. This invention features a T-shaped integrated structure for the locking plate and second auxiliary plate, effectively avoiding the shortcomings of traditional plates and achieving excellent reduction and fixation.

[0019] 4. The combined steel plate of the present invention is an anatomical steel plate, which makes it fit the anatomical shape of the pelvis better, avoiding the difficulties in shaping during surgery, poor adhesion between the steel plate and the bone surface, and the pressure on the surrounding tissues caused by the outward protrusion of the steel plate, which are all problems associated with traditional steel plates.

[0020] 5. The operating tool in this invention makes full use of the lever principle to directly lift and reduce the fracture ends, which solves the shortcomings of traditional reduction tools such as small reduction torque and difficulty in reduction, and reduces the difficulty of reduction during operation. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of the locking nail steel plate in this invention;

[0023] Figure 2 This is a schematic diagram of the structure of the reset steel plate in this invention;

[0024] Figure 3 This is a schematic diagram of the locking steel plate with a second auxiliary plate in this invention;

[0025] Figure 4 This is a schematic diagram of the resetting steel plate with a first auxiliary plate in this invention;

[0026] Figure 5 These are usage diagrams for Embodiments 1 and 2 of the present invention;

[0027] Figure 6 These are usage diagrams for Embodiments 3 and 4 of the present invention;

[0028] Figure 7 These are usage diagrams for Embodiments 5 and 6 of the present invention;

[0029] Figure 8 These are usage diagrams for Embodiments 7 and 8 of the present invention;

[0030] Figure 9 This is a schematic diagram of the mechanism of the reset clamp in this invention;

[0031] Figure 10 This is a schematic diagram of the repositioning clamp II used for left acetabular repositioning in this invention;

[0032] Figure 11 This is a schematic diagram of the crowbar structure in this invention;

[0033] Figure 12 This is a schematic diagram of another embodiment of the reset clamp in this invention;

[0034] Figure 13 This is a schematic diagram of another embodiment of the reduction clamp for left acetabular reduction in this invention;

[0035] Figure 14 This is a schematic diagram of the repositioning clamp II used for right acetabular repositioning in this invention;

[0036] Figure 15 This is a schematic diagram of another embodiment of the reduction clamp for right acetabular reduction in this invention.

[0037] As shown in the figure, 1-locking steel plate, 11-nut, 12-screw, 13-second auxiliary plate;

[0038] 2-Reset steel plate, 21-First steel plate, 22-Second steel plate, 23-Third steel plate, 24-First auxiliary plate;

[0039] 3-Reset clamp 1, 31-First clamp arm, 311-Positioning plate 1, 32-Second clamp arm, 321-Hook 1, 322-Stop hole, 323-Catch block, 33-L-shaped spring, 331-Catch tooth;

[0040] 4-Reset clamp two, 41-Third clamp arm, 411-Positioning plate two, 42-Fourth clamp arm, 421-Hook two;

[0041] 5- Pry bar, 51- Handle, 511- Anti-slip particles. Detailed Implementation

[0042] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0043] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," and "right" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "provided with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] It should be noted that the term "comprising" or any other variation is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Example 1

[0047] like Figure 1 As shown, a combined anatomical plate for posterior approach acetabular fracture reduction includes a locking plate 1 and a reduction plate 2. The locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and the screw 12 has a nut 11. Figure 2 As shown, the reset plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is a flexural fit for the anatomical structure above the acetabulum. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0048] For example, to facilitate adjustment of the position of the reset steel plate, the screw hole on the second steel plate 22 is a slotted hole 221.

[0049] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0050] like Figure 9 As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0051] like Figure 10 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm 42. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 14 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0052] like Figure 11 As shown, the pry bar 5 has a bar structure and a handle 51 at the rear end. The handle 51 has anti-slip particles 511.

[0053] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0054] For example, to facilitate operation, finger holes are provided at the rear ends of the first clamp arm 31, the second clamp arm 32, the third clamp arm 41, and the fourth clamp arm 42.

[0055] The anatomical plate in this embodiment is used for transverse fractures, posterior column fractures, and T-shaped fractures. The specific operation is as follows: Figure 5 As shown, firstly, select the corresponding combined anatomical plate according to the type of acetabular fracture. Then, place the first screw hole of the locking plate 1 at the ischial tuberosity and fix it with screws. Remove the nut 11, hook the third plate 23 of the reduction plate 2 onto the acetabular quadrilateral, and insert the screw 12 into the waist-shaped hole 221 on the second plate 22. After adjusting the position of the reduction plate 2, screw the nut 11 into the screw 12, thereby connecting the locking plate 1 and the reduction plate 2. When using the reduction forceps 3, first connect the positioning plate 311 to the iliac wing through its screw hole. For repositioning, hook 321 is engaged in the screw hole on the locking plate 1 or the reduction plate 2 to perform repositioning. When using reduction forceps 4, first connect positioning plate 411 to the iliac wing through its screw hole, hook 421 hooks onto the acetabular quadrilateral, and pull upwards to perform repositioning. For the use of pry bar 5, insert the front end of pry bar 5 into the screw hole on the locking plate 1 or the reduction plate 2, and use it as a fulcrum to perform repositioning. The appropriate tool is selected according to the specific fracture type during surgery. After repositioning, screws are then inserted into the screw holes where fixation is required.

[0056] Example 2

[0057] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 1 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and the screw 12 has a nut 11. Figure 2As shown, the reset plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is a flexural fit for the anatomical structure above the acetabulum. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0058] For example, to facilitate the adjustment of the position of the reset steel plate 2, the screw hole on the second steel plate 22 is a waist-shaped hole 221.

[0059] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0060] like Figure 12 As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0061] like Figure 13 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm 42. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 15 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0062] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0063] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0064] For example, for ease of operation, the rear ends of the second clamp arm 32 and the fourth clamp arm 42 are provided with locking blocks 323, and the rear ends of the first clamp arm 31 and the third clamp arm 41 are connected with L-shaped spring pieces 33. A number of locking teeth 331 are provided on one side of the L-shaped spring piece 33, and the locking teeth 331 are engaged with the locking blocks 323.

[0065] The anatomical plate in this embodiment is used for transverse fractures, posterior column fractures, and T-shaped fractures. The specific operation is as follows: Figure 1 As shown, the difference between this embodiment and embodiment 1 is that the methods of using reset clamp 3 and reset clamp 4 are different. The method of using the combined dissecting steel plate is the same as in embodiment 1. In this embodiment, when using reset clamp 3, pinch the rear ends of the first clamp arm 31 and the second clamp arm 32. The locking block at the rear end of the second clamp arm 32 is locked in the locking teeth 331 of the L-shaped spring piece 33 to fix the second clamp arm 32. This saves effort during the reset process. Similarly, the same applies to the third clamp arm 41 and the fourth clamp arm 42.

[0066] Example 3

[0067] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 1 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and the screw 12 has a nut 11. Figure 4 As shown, the reduction plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is bent to fit the anatomical structure above the acetabulum. A first auxiliary plate 24 is provided on the outer side of the first plate 21. The first auxiliary plate 24 is bent to fit the anatomical structure above the acetabulum. The use of the first plate 21 and the auxiliary plate 24 facilitates the fixation of the bone above the entire acetabulum. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is bent to fit the anatomical structure of the acetabulum quadrilateral.

[0068] For example, to facilitate the adjustment of the position of the reset steel plate 2, the screw hole on the second steel plate 22 is a waist-shaped hole 221.

[0069] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0070] like Figure 9As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0071] like Figure 10 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm 42. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 14 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0072] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0073] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0074] For example, to facilitate operation, finger holes are provided at the rear ends of the first clamp arm 31, the second clamp arm 32, the third clamp arm 41, and the fourth clamp arm 42.

[0075] The anatomical plate in this embodiment is used for posterior column fractures with posterior wall fractures. The specific operation is as follows: Figure 6 As shown, firstly, select the appropriate locking plate and reduction plate according to the type of acetabular fracture, such as... Figure 1 , 4 As shown, the first screw hole of the locking plate 1 is then placed at the ischial tuberosity and fixed with screws. The nut 11 is removed, and the third plate 23 of the reduction plate 2 is hooked onto the quadrilateral of the acetabulum. The screw 12 is inserted into the waist-shaped hole 221 on the second plate 22. After adjusting the position of the reduction plate 2, the nut 11 is screwed into the screw 12, thereby connecting the locking plate 1 and the reduction plate 2. The operation tools are used in the same way as in Embodiment 1. After the reduction is completed, the first auxiliary plate 24 is attached to the top of the acetabulum, and screws are driven into the screw holes that need to be fixed, while no screws are driven into the first auxiliary plate 24.

[0076] Example 4

[0077] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 1 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and the screw 12 has a nut 11. Figure 4 As shown, the reset plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is a flexural fit for the anatomical structure above the acetabulum. A first auxiliary plate 24 is provided on the outer side of the first plate 21. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0078] For example, to facilitate the adjustment of the position of the reset steel plate 2, the screw hole on the second steel plate 22 is a waist-shaped hole 221.

[0079] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0080] like Figure 12 As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0081] like Figure 13 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 15 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0082] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0083] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0084] For example, for ease of operation, the rear ends of the second clamp arm 32 and the fourth clamp arm 42 are provided with locking blocks 323, and the rear ends of the first clamp arm 31 and the third clamp arm 41 are connected with L-shaped spring pieces 33. A number of locking teeth 331 are provided on one side of the L-shaped spring piece 33, and the locking teeth 331 are engaged with the locking blocks 323.

[0085] The anatomical plate in this embodiment is used for posterior column fractures with posterior wall fractures. The specific operation is as follows: Figure 6 As shown, firstly, the appropriate locking plate and reduction plate are selected according to the type of acetabular fracture, such as... Figure 1 , 4 As shown, the use of the locking plate 1 and the reset plate 2 is the same as in Embodiment 3, and the use of the operating tools is the same as in Embodiment 2. After the reset is completed, the first auxiliary plate 24 is attached to the top of the acetabulum, and screws are driven into the screw holes that need to be fixed, while no screws are driven into the first auxiliary plate 24.

[0086] Example 5

[0087] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 3 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and a nut 11 is attached to the screw 12. A second auxiliary plate 13 is located at one end of the locking plate 1. Figure 2 As shown, the reset plate includes a first steel plate 21, a second steel plate 22, and a third steel plate 23. The first steel plate 21, the second steel plate 22, and the third steel plate 23 are integrally formed and each has a screw hole. The first steel plate 21 is a flexural fit for the anatomical structure above the acetabulum. The second steel plate 22 is intersected and connected to the locking pin steel plate 1. The third steel plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0088] For example, to facilitate adjustment of the position of the reset steel plate, the screw hole on the second steel plate 22 is a slotted hole 221.

[0089] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0090] like Figure 9As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0091] like Figure 10 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm 42. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 14 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0092] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0093] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0094] For example, to facilitate operation, finger holes are provided at the rear ends of the first clamp arm 31, the second clamp arm 32, the third clamp arm 41, and the fourth clamp arm 42.

[0095] The anatomical plate in this embodiment is used for anterior column fractures with posterior transverse fractures. The specific procedure is as follows: Figure 7 As shown, firstly, select the appropriate locking plate and reduction plate according to the type of acetabular fracture, such as... Figure 2 , 3 As shown, the first screw hole of the locking plate 1 is then placed at the ischial tuberosity and fixed with screws. The nut 11 is removed, and the third plate 23 of the reduction plate 2 is hooked onto the acetabular quadrilateral. The screw 12 is inserted into the waist-shaped hole 221 on the second plate 22. After adjusting the position of the reduction plate 2, the nut 11 is screwed into the screw 12, thereby connecting the locking plate 1 and the reduction plate 2. The operating tools are used in the same way as in Example 1. After the reduction is completed, screws are driven into the screw holes where fixation is required.

[0096] Example 6

[0097] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 3 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and a nut 11 is attached to the screw 12. A second auxiliary plate 13 is located at one end of the locking plate 1. Figure 2 As shown, the reset plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is a flexural fit for the anatomical structure above the acetabulum. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0098] For example, to facilitate adjustment of the position of the reset steel plate, the screw hole on the second steel plate 22 is a slotted hole 221.

[0099] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0100] like Figure 12 As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0101] like Figure 13 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 15 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0102] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0103] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0104] For example, for ease of operation, the rear ends of the second clamp arm 32 and the fourth clamp arm 42 are provided with locking blocks 323, and the rear ends of the first clamp arm 31 and the third clamp arm 41 are connected with L-shaped spring pieces 33. A number of locking teeth 331 are provided on one side of the L-shaped spring piece 33, and the locking teeth 331 are engaged with the locking blocks 323.

[0105] The anatomical plate in this embodiment is used for anterior column fractures with posterior transverse fractures. The specific procedure is as follows: Figure 7 As shown, firstly, select the appropriate locking plate and reduction plate according to the type of acetabular fracture, such as... Figure 2 , 3 As shown, the use of the locking steel plate 1 and the reset steel plate 2 is the same as in Example 5, and the use of the operating tools is the same as in Example 2. After the reset is completed, screws are driven into the screw holes that need to be fixed.

[0106] Example 7

[0107] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 3 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and a nut 11 is attached to the screw 12. A second auxiliary plate 13 is located at one end of the locking plate 1. Figure 4 As shown, the reset plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is a flexural fit for the anatomical structure above the acetabulum. A first auxiliary plate 24 is provided on the outer side of the first plate 21. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0108] For example, to facilitate adjustment of the position of the reset steel plate, the screw hole on the second steel plate 22 is a slotted hole 221.

[0109] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0110] like Figure 9As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0111] like Figure 10 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm 42. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 14 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0112] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0113] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0114] For example, to facilitate operation, finger holes are provided at the rear ends of the first clamp arm 31, the second clamp arm 32, the third clamp arm 41, and the fourth clamp arm 42.

[0115] The anatomical plate in this embodiment is used for bicolumnar fractures requiring enhanced posterior wall fixation. The specific procedure is as follows: Figure 8 As shown, firstly, select the appropriate locking plate and reduction plate according to the type of acetabular fracture, such as... Figure 3 , 4 As shown, the first screw hole of the locking plate 1 is then placed at the ischial tuberosity and fixed with screws. The nut 11 is removed, and the third plate 23 of the reduction plate 2 is hooked onto the acetabular quadrilateral. The screw 12 is inserted into the waist-shaped hole 221 on the second plate 22. After adjusting the position of the reduction plate 2, the nut 11 is screwed into the screw 12, thereby connecting the locking plate 1 and the reduction plate 2. The operating tools are used in the same way as in Example 1. After the reduction is completed, screws are driven into the screw holes that need to be fixed, but no screws are driven into the first auxiliary plate 24.

[0116] Example 8

[0117] A combined anatomical plate for posterior approach acetabular fracture reduction, comprising locking plate 1 and reduction plate 2, such as... Figure 3 As shown, the locking plate 1 is an arc-shaped strip plate that fits above the greater sciatic notch. The locking plate 1 has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate 1 has a screw 12, and a nut 11 is attached to the screw 12. A second auxiliary plate 13 is located at one end of the locking plate 1. Figure 4 As shown, the reset plate 2 includes a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are integrally formed and each has a screw hole. The first plate 21 is a flexural fit for the anatomical structure above the acetabulum. A first auxiliary plate 24 is provided on the outer side of the first plate 21. The second plate 22 is intersected and connected to the locking plate 1. The third plate 23 is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

[0118] For example, to facilitate adjustment of the position of the reset steel plate, the screw hole on the second steel plate 22 is a slotted hole 221.

[0119] An operating tool for operating the above-described anatomical plate for combined reduction of acetabular fractures via the posterior approach, comprising:

[0120] like Figure 12 As shown, the reset clamp 3 includes a first clamp arm 31 and a second clamp arm 32. The middle part of the first clamp arm 31 and the second clamp arm 32 are connected in a scissor shape. The front end of the first clamp arm 31 is provided with a positioning plate 311, which has a screw hole. The front end of the second clamp arm 32 is provided with a hook 321, which is perpendicular to the second clamp arm 32 and bent towards the first clamp arm 31.

[0121] like Figure 13 As shown, the reduction clamp 2 4 includes a third clamp arm 41 and a fourth clamp arm 42. The middle of the third clamp arm 41 and the fourth clamp arm 42 are connected in a scissor shape. The front end of the third clamp arm 41 is provided with a positioning plate 2 411, which has a screw hole. The front end of the fourth clamp arm 42 is provided with a hook 2 421, which is bent relative to the fourth clamp arm 42. When the reduction clamp 2 4 is used to reduce a left acetabular fracture, its hook 2 421 bends to the left, as shown. Figure 15 As shown, when the reduction clamp 24 is used to perform reduction of the right acetabular fracture, its hook 2421 bends to the right;

[0122] like Figure 11 As shown, the pry bar 5 is a rod structure, and the rear end of the pry bar 5 is provided with a handle 51, and the handle 51 is provided with anti-slip particles 511.

[0123] For example, to facilitate the separation of the first clamp arm 31 and the second clamp arm 32, the third clamp arm 41 and the fourth clamp arm 42, a stop block 312 is provided in the middle of the first clamp arm 31 and the third clamp arm 41. A connecting shaft is provided between the stop block 312 and the first clamp arm 31, and between the stop block 312 and the third clamp arm 41. A stop block hole 322 that mates with the stop block 312 is provided in the middle of the second clamp arm 32 and the fourth clamp arm 42.

[0124] For example, for ease of operation, the rear ends of the second clamp arm 32 and the fourth clamp arm 42 are provided with locking blocks 323, and the rear ends of the first clamp arm 31 and the third clamp arm 41 are connected with L-shaped spring pieces 33. A number of locking teeth 331 are provided on one side of the L-shaped spring piece 33, and the locking teeth 331 are engaged with the locking blocks 323.

[0125] The anatomical plate in this embodiment is used for bicolumnar fractures requiring enhanced posterior wall fixation. The specific procedure is as follows: Figure 8 As shown, the appropriate locking plate and reduction plate are selected according to the type of acetabular fracture, such as... Figure 3 , 4 As shown, the use of the locking steel plate 1 and the reset steel plate 2 is the same as in Embodiment 7, and the use of the operating tools is the same as in Embodiment 2. After the reset is completed, screws are driven into the screw holes that need to be fixed, but no screws are driven into the first auxiliary plate 24.

[0126] Other aspects of this invention that are not detailed herein are all conventional techniques known to those skilled in the art.

[0127] The scope of protection of this invention is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this invention shall fall within the scope of protection of this invention.

Claims

1. A combined anatomical plate for posterior approach acetabular fracture reduction, characterized in that: include: The locking plate is an arc-shaped strip steel plate that fits above the greater sciatic notch. The locking plate has screw holes, the first of which is curved to fit the anatomical structure above the ischial tuberosity. The locking plate has a screw rod with a nut on it. The reset plate includes a first plate, a second plate, and a third plate. The first plate, the second plate, and the third plate are integrally formed and each has a screw hole. The first plate is a flexural fit for the anatomical structure above the acetabulum. The second plate is intersected and connected to the locking plate. The third plate is a flexural fit for the anatomical structure of the acetabulum quadrilateral.

2. The anatomical plate for combined reduction of acetabular fractures via posterior approach as described in claim 1, characterized in that: The screw holes on the second steel plate are oblong holes.

3. The anatomical plate for combined reduction of acetabular fractures via posterior approach as described in claim 1, characterized in that: A first auxiliary plate is provided on the outer side of the first steel plate.

4. The anatomical plate for combined reduction of acetabular fractures via posterior approach as described in claim 1, characterized in that: A second auxiliary plate is provided at one end of the locking steel plate.

5. An operating tool for operating the anatomical plate for combined reduction of acetabular fractures via posterior approach as described in any one of claims 1-4, characterized in that: include: The reset clamp 1 includes a first clamp arm and a second clamp arm. The middle part of the first clamp arm and the second clamp arm are connected in a scissor shape. The front end of the first clamp arm is provided with a positioning plate 1, and the positioning plate 1 is provided with a screw hole. The front end of the second clamp arm is provided with a hook 1, which is perpendicular to the second clamp arm and bent towards the first clamp arm. The second set of reset clamps includes a third clamp arm and a fourth clamp arm. The third clamp arm and the fourth clamp arm are connected in the middle in a scissor shape. The front end of the third clamp arm is provided with a positioning plate 2, which has a screw hole. The front end of the fourth clamp arm is provided with a hook 2. The hook 2 is bent relative to the fourth clamp arm. A crowbar, wherein the crowbar has a rod-like structure.

6. The operating tool as described in claim 5, characterized in that: Both the first and third clamp arms have a stop block in the middle. A connecting shaft is provided between the stop block and the first clamp arm, and between the stop block and the third clamp arm. Both the second and fourth clamp arms have a stop block hole in the middle that cooperates with the stop block.

7. The operating tool as described in claim 5, characterized in that: The rear ends of the first clamp arm, the second clamp arm, the third clamp arm, and the fourth clamp arm are all provided with finger holes.

8. The operating tool as described in claim 5, characterized in that: The rear ends of the second and fourth clamp arms are provided with locking blocks, and the rear ends of the first and third clamp arms are connected with L-shaped spring pieces. Each L-shaped spring piece has several locking teeth on one side, and the locking teeth engage with the locking blocks.

9. The operating tool as described in claim 5, characterized in that: The pry bar has a handle at its rear end, and the handle has anti-slip particles.

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