Hip joint surgery dislocation approach osteotomy and screw placement guide assembly

Abstract

The utility model belongs to the technical field of hip joint surgery dislocation approach, and particularly relates to a hip joint surgery dislocation approach osteotomy and screw placement guide assembly. The osteotomy auxiliary plate comprises an osteotomy auxiliary plate and a screw guide plate, the osteotomy auxiliary plate is arranged on the outer side of the exposed greater trochanter femur of the patient and assists the external cutting device in conducting osteotomy operation on the greater trochanter of the femur of the patient. The screw guide plate is arranged on the outer side of greater trochanter of the thighbone of a patient after osteotomy is completed and used for positioning and guiding the at least two reset fastening screws. The osteotomy and screw placement guide assembly is designed in a conventional hip joint surgery dislocation approach operation, the osteotomy auxiliary plate and the screw guide plate are designed, and the osteotomy auxiliary plate comprises an osteotomy guide mechanism at a proper position and is used for accurately positioning the osteotomy position of a greater trochanter osteotomy block of a patient; the problem that in the prior art, when osteotomy is conducted on a patient completely depending on doctor experience, an osteotomy block is likely to be too large or too small or the osteotomy direction is dislocated is solved.

Description

Technical Field

[0001] This utility model belongs to the field of hip joint surgical dislocation approach technology, specifically relating to a hip joint surgical dislocation approach osteotomy and screw placement guide component. Background Technology

[0002] The surgical approach for hip dislocation is a specialized approach to hip joint surgery. This procedure involves a femoral greater trochanter osteotomy with rotation, creating a gap between the femoral head and acetabulum while preserving the integrity of the external rotator muscles and the main blood supply to the femoral head. Following this, the hip joint capsule is exposed through anterior dissection, and the femoral head and acetabulum are further exposed, providing a 360-degree view of the femoral head for surgical manipulation. After the procedure, the greater trochanter osteotomy piece is repositioned and fixed to the femur with screws. This technique can be used to treat various conditions within the hip joint, such as avascular necrosis of the femoral head, hip-femoral impingement syndrome, slipped capital femoral epiphysis, synovial chondromatosis of the hip joint, femoral head fractures, and benign and malignant tumors within the hip joint.

[0003] In current surgical approaches for hip dislocation, both osteotomy and screw placement are performed manually. The precision of these procedures relies entirely on the surgeon's experience, which can easily lead to issues such as oversized or undersized osteotomy fragments, or incorrect osteotomy direction. During surgery, undersized osteotomy fragments can easily fracture. Oversized fragments may damage the nutrient arteries supplying the bone, leading to bone necrosis. Incorrect osteotomy direction can cause damage to blood vessels, nerves, and tendons around the hip joint, resulting in serious complications. During screw placement, direct manual placement can easily result in screws penetrating the joint cavity or damaging surrounding blood vessels and nerves, leading to hemorrhagic shock, nerve damage, or even paralysis. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies in hip joint surgical dislocation procedures, where osteotomy and screw placement are performed manually, making it difficult to control the precision of osteotomy size, direction, and screw placement. This invention designs an osteotomy and screw placement guidance system and method for use in hip joint surgical dislocation procedures, which does not rely entirely on the doctor's experience and can ensure the precision of osteotomy and screw placement.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] As a first aspect, a surgical approach for hip dislocation involving osteotomy and screw placement includes an osteotomy auxiliary plate and a positioning screw guide plate; the osteotomy auxiliary plate is positioned on the lateral side of the exposed greater trochanter of the femur to assist an external cutting device in performing osteotomy on the greater trochanter of the femur; the positioning screw guide plate is positioned on the lateral side of the greater trochanter of the femur after osteotomy and is used to position and guide at least two reduction and fastening screws.

[0007] After the osteotomy is completed, the osteotomy auxiliary plate is removed from the patient's exposed greater trochanter and femur. The screw guide plate is then placed on the outside of the greater trochanter of the femur after reduction using Kirschner wires.

[0008] The osteotomy auxiliary plate includes a first fitting fixation block fixedly mounted on the patient's greater trochanter, a second fitting fixation block fixedly mounted on the corresponding femur of the patient, and an osteotomy guide mechanism disposed between the first fitting fixation block and the second fitting fixation block; the first fitting fixation block, the second fitting fixation block and the osteotomy guide mechanism are all connected by connecting rods; in use, the first fitting fixation block is fitted and fixed to the lateral side of the greater trochanter osteotomy block to be cut on the patient, and the second fitting fixation block is fitted and fixed to the lateral side of the corresponding femur of the patient.

[0009] Specifically, the osteotomy guide mechanism includes a first osteotomy guide mechanism and a second osteotomy guide mechanism that are interconnected.

[0010] The first osteotomy guide mechanism includes a first osteotomy surround plate connected to the first fitting fixing block via a connecting rod, a second osteotomy surround plate connected to the first osteotomy surround plate, and a third osteotomy surround plate connected to the second osteotomy surround plate; the first osteotomy surround plate, the second osteotomy surround plate, and the third osteotomy surround plate form a first osteotomy groove with a side opening.

[0011] The second osteotomy guide mechanism includes a fourth osteotomy surround plate connected to the second fitting fixing block via a connecting rod, a fifth osteotomy surround plate connected to the fourth osteotomy surround plate, and a sixth osteotomy surround plate connected to the fifth osteotomy surround plate; the fourth osteotomy surround plate, the fifth osteotomy surround plate, and the sixth osteotomy surround plate form a second osteotomy groove with a side opening; the opening of the first osteotomy groove is opposite to the opening of the second osteotomy groove.

[0012] Specifically, the second osteotomy plate is fixedly connected to the fifth osteotomy plate, and the corresponding cutting positions of the first osteotomy groove and the second osteotomy groove are not on the same horizontal plane.

[0013] Specifically, the osteotomy auxiliary plate further includes at least one first fixation stage disposed on the first fitting and fixing block and at least two second fixation stages disposed on the second fitting and fixing block; wherein,

[0014] The first fitting fixation block is fixed to the patient's greater trochanter osteotomy block by Kirschner wires inserted in the first fixation hole platform; the second fitting fixation block is fixed to the patient's femur by Kirschner wires inserted in the second fixation hole platform.

[0015] Specifically, the first fixing hole platform includes one; the second fixing hole platform includes two, and the two second fixing hole platforms are arranged at an angle to each other.

[0016] Specifically, the screw guide plate includes:

[0017] The first nail plate has its inner surface fitted to the outer surface of the patient's greater trochanteric osteotomy block.

[0018] The second pin plate has its inner surface fitted to the corresponding outer surface of the patient's femur.

[0019] A nail-mounting link, the two ends of which are respectively fixed to the first nail-mounting plate and the second nail-mounting plate;

[0020] At least two upper guide screw semi-enclosed protrusions are set on the first screw placement plate, and the guide screw direction of the upper guide screw semi-enclosed protrusions is from the greater trochanter osteotomy block of the patient to the femur;

[0021] At least two lower guide screw round bosses are disposed on the second screw placement plate, and the guide screw direction of the lower guide screw round bosses is from the greater trochanter to the lesser trochanter of the patient.

[0022] Specifically, the lower guide pin round boss includes two, and the two lower guide pin round bosses are arranged alternately.

[0023] Specifically, the upper guide nail semi-enclosed protrusion includes four, which are evenly distributed on the first nail plate, and the upper guide nail semi-enclosed protrusion surrounds the first nail plate at a 240-degree angle.

[0024] Secondly, the method of using the osteotomy and screw placement guide assembly for a surgical approach to hip dislocation described above includes the following steps:

[0025] S1. Pre-operative preparation: Based on the patient's greater trochanter, femur shape and cutting location, 3D-printed osteotomy auxiliary plate and screw guide plate are used. The patient is placed in a lateral decubitus position, and the skin is cut open on the outside of the hip joint to expose the patient's greater trochanter and the outside of the femur.

[0026] S2. An internal osteotomy auxiliary plate is installed. The position and direction of the osteotomy auxiliary plate are adjusted. At least two Kirschner wires are respectively inserted into the first fitting fixation block and the second fitting fixation block to fix the osteotomy auxiliary plate on the lateral side of the greater trochanter of the patient.

[0027] S3. Perform osteotomy on the patient, that is, the doctor cuts the greater trochanter bone block by means of an external cutting device and an osteotomy guide mechanism;

[0028] S4. After cutting, remove the osteotomy aid plate;

[0029] S5. Implant screw guide plate, that is, use Kirschner wires to fix the screw guide plate to the patient's greater trochanter and the lateral side of the femur according to the fixation position of the greater trochanter osteotomy block;

[0030] S6. Implant a screw to replace the Kirschner wire on the screw guide plate;

[0031] S7. After the replacement is completed, remove the Kirschner wire and screw guide plate from the fixing screw guide plate;

[0032] S8. Perform surgical suturing on the patient.

[0033] Specifically, in step S6, the Kirschner wires on the screw guide plate are removed one by one, and screws are inserted until the replacement is complete.

[0034] The beneficial effects of this utility model's hip joint surgical dislocation approach osteotomy and screw placement guide assembly are:

[0035] This invention designs an osteotomy and screw placement guide assembly for conventional hip joint surgical dislocation procedures. The assembly includes an osteotomy auxiliary plate and a screw guide plate. The osteotomy auxiliary plate includes an appropriately positioned osteotomy guide mechanism for precisely locating the osteotomy block in the greater trochanter, solving the problem of existing techniques relying entirely on the surgeon's experience for osteotomy, which can easily lead to osteotomy blocks that are too large or too small, or misalignment of the osteotomy direction. The design of this invention's osteotomy auxiliary plate greatly ensures the accuracy of the osteotomy position. Simultaneously, after the osteotomy is completed, the screw guide plate is used to position and guide the implanted screw, preventing the screw from penetrating the joint cavity or damaging surrounding blood vessels and nerves during placement. This ensures the accuracy of screw placement and direction, and to a certain extent, guarantees the patient's surgical safety.

[0036] Using the osteotomy and screw placement guide assembly for hip joint surgical dislocation of this invention, in the early stage of surgery, osteotomy auxiliary plates and screw guide plates can be manufactured using 3D printing technology according to the patient's greater trochanter, femur shape, and the required cutting position. This allows the osteotomy and screw placement guide assembly for hip joint surgical dislocation of this invention to be applicable to different patients' hip joint surgical dislocation procedures, thus having wide applicability. The use of the osteotomy auxiliary plate ensures the accuracy of the osteotomy position, and the use of the screw guide plate ensures the accuracy of the screw placement, which is conducive to the stable fixation of the osteotomy piece. This results in more precise reduction of the osteotomy piece in the patient's case. For the patient, precise cutting position and precise reduction of the osteotomy piece are the most important conditions for reducing surgical risks and the incidence of complications. Attached Figure Description

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] Figure 1 This is a schematic diagram of the left femur structure of a patient in Embodiment 1 of this utility model.

[0039] Figure 2This is a first-view perspective perspective view of the osteotomy auxiliary plate in Embodiment 1 of this utility model.

[0040] Figure 3 This is a second-view perspective perspective view of the osteotomy auxiliary plate in Embodiment 1 of this utility model.

[0041] Figure 4 This is a detailed drawing of the osteotomy guide mechanism in Embodiment 1 of this utility model.

[0042] Figure 5 This is a cross-sectional view of the osteotomy operation software according to Embodiment 1 of this utility model.

[0043] Figure 6 This is a perspective view of the screw guide plate in Embodiment 1 of this utility model.

[0044] Figure 7 This is a cross-sectional view of the nail placement operation software in Embodiment 1 of this utility model.

[0045] Figure 8 This is a flowchart illustrating the usage method of the osteotomy and screw placement guide assembly according to Embodiment 2 of this utility model.

[0046] In the figure: 1. Osteotomy auxiliary plate; 11. First fitting fixation block; 12. Second fitting fixation block; 13. Osteotomy guide mechanism; 131. First osteotomy surround plate; 132. Second osteotomy surround plate; 133. Third osteotomy surround plate; 134. First osteotomy groove; 135. Fourth osteotomy surround plate; 136. Fifth osteotomy surround plate; 137. Sixth osteotomy surround plate; 138. Second osteotomy groove; 14. Connecting rod; 15. First fixation hole platform; 16. Second fixation hole platform; 2. Screw guide plate; 21. First screw placement plate; 22. Second screw placement plate; 23. Upper guide screw semi-enclosed boss; 24. Lower guide screw round boss; 25. Screw placement connecting rod; 3. Left femur. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0048] Example 1

[0049] like Figures 1-7The present invention, as illustrated in this embodiment, provides a surgical approach for hip dislocation involving osteotomy and screw placement. The approach includes an osteotomy auxiliary plate 1 and a screw guide plate 2. The osteotomy auxiliary plate 1 is positioned on the lateral side of the exposed greater trochanter of the femur to assist an external cutting device in osteotomy. The screw guide plate 2 is positioned on the lateral side of the greater trochanter of the femur after osteotomy and is used to guide and position at least two reduction and tightening screws. After osteotomy, the osteotomy auxiliary plate 1 is removed from the exposed greater trochanter and femur, and the screw guide plate 2 is then positioned on the lateral side of the reduced greater trochanter of the femur using Kirschner wires.

[0050] This embodiment takes a surgical approach for left femoral 3 hip joint dislocation of a patient as an example. It should be further explained that the osteotomy auxiliary plate 1 in this embodiment includes a first fitting fixation block 11 fixedly installed on the patient's greater trochanter, a second fitting fixation block 12 fixedly installed on the corresponding femur of the patient, and an osteotomy guide mechanism 13 disposed between the first fitting fixation block 11 and the second fitting fixation block 12; the first fitting fixation block 11, the second fitting fixation block 12 and the osteotomy guide mechanism 13 are all connected by a connecting rod 14; in use, the first fitting fixation block 11 is fitted and fixed to the outside of the osteotomy block of the greater trochanter of the patient to be cut, and the second fitting fixation block 12 is fitted and fixed to the outside of the corresponding femur of the patient.

[0051] This invention incorporates an osteotomy and screw placement guide assembly into a conventional hip joint surgical approach for dislocation. It includes an osteotomy auxiliary plate 1 and a screw guide plate 2. The osteotomy auxiliary plate 1 comprises an osteotomy guide mechanism 13 at an appropriate position for precisely locating the osteotomy site of the greater trochanter bone. This addresses the problem in existing techniques where osteotomy relies entirely on the surgeon's experience, which can easily lead to oversized or undersized bone fragments or misalignment of the osteotomy direction. The design of the osteotomy auxiliary plate 1 in this invention significantly ensures the accuracy of the osteotomy location. Simultaneously, after the osteotomy is completed, the screw guide plate 2 guides and positions the implanted screw, preventing the screw from penetrating the joint cavity or damaging surrounding blood vessels and nerves during placement. This ensures both the accuracy of the screw placement location and direction, and to a certain extent, guarantees the patient's surgical safety.

[0052] like Figure 3As shown, the osteotomy guide mechanism 13 includes a first osteotomy guide mechanism 13 and a second osteotomy guide mechanism 13 connected to each other; wherein, the first osteotomy guide mechanism 13 includes a first osteotomy surround plate 131 connected to the first fitting fixation block 11 via a connecting rod 14, a second osteotomy surround plate 132 connected to the first osteotomy surround plate 131, and a third osteotomy surround plate 133 connected to the second osteotomy surround plate 132; the first osteotomy surround plate 131, the second osteotomy surround plate 132, and the third osteotomy surround plate 133 form a first osteotomy groove 134 with a side opening. The second osteotomy guide mechanism 13 includes a fourth osteotomy surround plate 135 connected to the second fitting fixing block 12 via a connecting rod 14, a fifth osteotomy surround plate 136 connected to the fourth osteotomy surround plate 135, and a sixth osteotomy surround plate 137 connected to the fifth osteotomy surround plate 136. The fourth osteotomy surround plate 135, the fifth osteotomy surround plate 136, and the sixth osteotomy surround plate 137 form a second osteotomy groove 138 with a side opening. The opening of the first osteotomy groove 134 is opposite to the opening of the second osteotomy groove 138. The second osteotomy surround plate 132 is fixedly connected to the fifth osteotomy surround plate 136, and the corresponding cutting positions of the first osteotomy groove 134 and the second osteotomy groove 138 are not on the same horizontal plane.

[0053] In this embodiment, the first osteotomy groove 134 and the second osteotomy groove 138 are positioned 1.5 to 2.0 cm inward from the outer edge of the greater trochanter of the femur. The horizontal planes of the first osteotomy groove 134 and the second osteotomy groove 138 are designed not to overlap, and their openings are opposite to each other. This design not only meets the cutting requirements during surgery but also allows for more precise repositioning of the osteotomy piece, which is beneficial for the stability of the osteotomy piece after fixation.

[0054] Reference Figure 3 and Figure 4 Both the first osteotomy groove 134 and the second osteotomy groove 138 have openings on one side to ensure smooth removal of the cutting blade from the external cutting device, guaranteeing the safety and stability of the patient's cutting process. The positions of the first osteotomy groove 134 and the second osteotomy groove 138 are determined according to the patient's needs. During the cutting process, the first osteotomy groove 134 and the second osteotomy groove 138 limit the cutting position, making the osteotomy position more precise and preventing deviation due to external factors or insufficient doctor experience. After being limited by the osteotomy grooves of this invention, the osteotomy position can reach its optimal state, avoiding damage to surrounding blood vessels and nerves and reducing the incidence of complications.

[0055] In this embodiment, the osteotomy auxiliary plate 1 further includes at least one first fixation hole platform 15 disposed on the first fitting fixation block 11 and at least two second fixation hole platforms 16 disposed on the second fitting fixation block 12; wherein, the first fitting fixation block 11 is fixed to the patient's greater trochanter osteotomy block by Kirschner wires passing through the first fixation hole platform 15; the second fitting fixation block 12 is fixed to the patient's femur by Kirschner wires passing through the second fixation hole platforms 16. It should be understood that a through hole for passing through Kirschner wires is provided between the first fixation hole platform 15 and the second fixation hole platform 16. As a preferred embodiment, there is one first fixation hole platform 15. There are two second fixation hole platforms 16, which are arranged at an angle to each other. The angled arrangement of the two second fixation hole platforms 16 allows the Kirschner wires inserted therein to be inserted crosswise into the patient's femur, ensuring the stability of the second fitting fixation block 12.

[0056] like Figure 6 and 7 As shown, the screw guide plate 2 in this embodiment includes a first screw-positioning plate 21, a second screw-positioning plate 22, a screw-positioning connecting rod 25 for connecting the first screw-positioning plate 21 and the second screw-positioning plate 22, an upper guide screw semi-enclosed boss 23 disposed on the first screw-positioning plate 21, and a lower guide screw round boss 24 disposed on the second screw-positioning plate 22. The inner surface of the first screw-positioning plate 21 is fitted to the outer surface of the patient's greater trochanter osteotomy piece, and the inner surface of the second screw-positioning plate 22 is fitted to the corresponding outer surface of the patient's femur. The two ends of the screw-positioning connecting rod 25 are respectively fixed to the first screw-positioning plate 21 and the second screw-positioning plate 22. At least two upper guide screw semi-enclosed bosses 23 are disposed on the first screw-positioning plate 21, with the guide screw direction of the upper guide screw semi-enclosed bosses 23 pointing from the patient's greater trochanter osteotomy piece to the femur. At least two lower guide screw round bosses 24 are disposed on the second screw-positioning plate 22, with the guide screw direction of the lower guide screw round bosses 24 pointing from the patient's greater trochanter to the lesser trochanter.

[0057] In one embodiment, the lower guide screw round boss 24 in this embodiment includes two, which are staggered. The staggered arrangement of the two lower guide screw round bosses 24 allows the Kirschner wire passing between the two lower guide screw round bosses 24 to stably fix the second screw plate 22 to the lateral surface of the patient's femur.

[0058] In one implementation, the upper guide screw semi-enclosed protrusion 23 in this embodiment includes four, which are evenly distributed on the first screw placement plate 21, forming a 240-degree encirclement. The upper guide screw semi-enclosed protrusion 23 in this embodiment is designed with a 240-degree encirclement and a 60-degree notch, which provides sufficient stability and precision during screw implantation. Furthermore, after implanting the Kirschner wire, the screw guide plate 2 can be easily removed for the next step. It should be understood that both the lower guide screw circular protrusion 24 and the upper guide screw semi-enclosed protrusion 23 have perforations for inserting Kirschner wires; the use of these perforations will not be explained in detail here.

[0059] In this embodiment, a screw guide plate 2 is cleverly used to guide the implantation of Kirschner wires and / or screws. The screw guide plate 2 in this embodiment is designed according to the patient's optimal screw direction and position. During the operation, the screw guide plate 2 guides the implantation of Kirschner wires and is fixed to the greater trochanter osteotomy block and the femur. At least two Kirschner wires are implanted on the greater trochanter osteotomy block and on the femur below the corresponding greater trochanter osteotomy block. The placement direction of the two Kirschner wires implanted on the greater trochanter osteotomy block is from the greater trochanter osteotomy block to the femur, and the placement direction of the at least two Kirschner wires on the femur is from the greater trochanter to the lesser trochanter. The length of the Kirschner wire implantation is determined preoperatively; the specific determination process can be based on the doctor's experience or existing calculation methods, which will not be elaborated here. The Kirschner wires inserted on the screw guide plate 2 are temporarily fixed to the screw guide plate 2. Then, the Kirschner wires are removed one by one and screws are implanted. After each replacement, at least four screws can be accurately implanted.

[0060] Example 2

[0061] Based on the above-mentioned method of using a hip joint surgical dislocation approach osteotomy and screw placement guide component, such as Figure 8 As shown, it includes the following steps:

[0062] S1. Pre-operative preparation: Based on the patient's greater trochanter, femur shape and cutting location, 3D print osteotomy auxiliary plate 1 and screw guide plate 2, place the patient in a lateral decubitus position, cut the skin on the outside of the hip joint to expose the patient's greater trochanter and the outside of the femur.

[0063] S2. An internal osteotomy auxiliary plate 1 is installed. The position and direction of the osteotomy auxiliary plate 1 are adjusted. At least two Kirschner wires are respectively inserted into the first fitting fixation block 11 and the second fitting fixation block 12 to fix the osteotomy auxiliary plate 1 to the lateral side of the greater trochanter of the patient.

[0064] S3. Perform osteotomy on the patient, that is, the doctor cuts the greater trochanter bone block through the osteotomy guide mechanism 13 using an external cutting device;

[0065] S4. After the cutting is completed, remove the osteotomy auxiliary plate 1;

[0066] S5. Implant screw guide plate 2, that is, use Kirschner wires to fix screw guide plate 2 to the patient's greater trochanter and the lateral side of the femur according to the fixation position of the greater trochanter osteotomy block;

[0067] S6. Insert a screw to replace the Kirschner wire on the screw guide plate 2;

[0068] S7. After the replacement is completed, remove the Kirschner wire and screw guide plate 2 from the fixing screw guide plate 2;

[0069] S8. Perform surgical suturing on the patient.

[0070] In step S6, Kirschner wires on the screw guide plate 2 are removed one by one and screws are inserted until all are replaced.

[0071] like Figure 8 As shown, the specific process of using the hip joint surgical dislocation approach osteotomy and screw placement guide component of this utility model is as follows: The patient is placed in a lateral decubitus position. The doctor makes a direct incision in the skin, subcutaneous tissue, and the space between the iliotibial band, gluteus maximus, and tensor fasciae latae to expose the deep structures. After exposing the lateral femur below the greater trochanter, a 3D-printed osteotomy auxiliary plate 1 is inserted. The direction and position of the osteotomy auxiliary plate 1 on the patient's femur are manually adjusted until the surgical position is met. Two Kirschner wires are used to temporarily fix the osteotomy auxiliary plate 1 to the lateral femur and greater trochanter of the patient. Then, according to the positions of the first osteotomy groove 134 and the second osteotomy groove 138 on the osteotomy auxiliary plate 1, an external cutting device is used to perform osteotomy on the patient's greater trochanter. During the osteotomy, the cutting blade of the external cutting device is placed in the first osteotomy groove 134 and / or the second osteotomy groove 138, and the surrounding plate on the periphery of the osteotomy groove limits the cutting blade. After the osteotomy is completed, remove the Kirschner wires temporarily fixed on the osteotomy auxiliary plate 1, and then remove the osteotomy auxiliary plate 1.

[0072] After the osteotomy procedure is completed and the osteotomy auxiliary plate 1 is removed, the surgeon places the screw guide plate 2 on the outside of the corresponding cutting position on the patient. After adjusting it to the appropriate position and direction, the surgeon uses Kirschner wires to fix the screw guide plate 2 to the patient's femur and greater trochanter according to the position of the upper guide screw semi-enclosed protrusion 23. Kirschner wires are then inserted through the lower guide screw round protrusion 24 into the osteotomy block and the un-osteotomized portion of the femoral trochanter to temporarily fix them. After confirming good positioning with fluoroscopy, the implanted Kirschner wires are removed one by one and screws are implanted. After all the replacements are completed, the screw guide plate 2 is removed. This invention completes the osteotomy and screw placement guidance work in hip joint surgical dislocation approach. Using the osteotomy and screw placement guidance component of this invention, in the early stages of surgery, the osteotomy auxiliary plate 1 and screw guide plate 2 can be fabricated using 3D printing technology according to the patient's greater trochanter, femur shape, and the required cutting location. This allows the osteotomy and screw placement guidance component of this invention to be applicable to different patients undergoing hip joint surgical dislocation approach, demonstrating wide applicability. The use of the osteotomy auxiliary plate 1 ensures the accuracy of the osteotomy position, and the use of the screw guide plate 2 ensures the accuracy of the screw placement, facilitating stable fixation of the osteotomy piece. This results in more precise osteotomy piece repositioning for the patient. For the patient, precise cutting position and accurate osteotomy piece repositioning are the most important conditions for reducing surgical risks and the incidence of complications.

[0073] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A hip joint surgical dislocation approach osteotomy and screw placement guide assembly, characterized in that, It includes an osteotomy auxiliary plate (1) and a screw guide plate (2); the osteotomy auxiliary plate (1) is set on the lateral side of the exposed greater trochanter of the femur of the patient to assist the external cutting device in performing osteotomy on the greater trochanter of the femur of the patient; the screw guide plate (2) is set on the lateral side of the greater trochanter of the femur of the patient after osteotomy and is used to position and guide at least two reduction and fastening screws. After the osteotomy is completed, the osteotomy auxiliary plate (1) is removed from the patient's exposed greater trochanter and femur, and the screw guide plate (2) is placed on the outside of the greater trochanter of the femur after the patient has been reduced by Kirschner wires. The osteotomy auxiliary plate (1) includes a first fitting fixation block (11) fixedly mounted on the greater trochanter of the patient, a second fitting fixation block (12) fixedly mounted on the corresponding femur of the patient, and an osteotomy guide mechanism (13) disposed between the first fitting fixation block (11) and the second fitting fixation block (12); the first fitting fixation block (11), the second fitting fixation block (12) and the osteotomy guide mechanism (13) are all connected by a connecting rod (14); in use, the first fitting fixation block (11) is fitted and fixed to the outside of the osteotomy block of the greater trochanter of the patient to be cut, and the second fitting fixation block (12) is fitted and fixed to the outside of the corresponding femur of the patient.

2. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 1, characterized in that: The osteotomy guide mechanism (13) includes a first osteotomy guide mechanism (13) and a second osteotomy guide mechanism (13) that are connected to each other. The first osteotomy guide mechanism (13) includes a first osteotomy surround plate (131) connected to the first fitting fixation block (11) via a connecting rod (14), a second osteotomy surround plate (132) connected to the first osteotomy surround plate (131), and a third osteotomy surround plate (133) connected to the second osteotomy surround plate (132); the first osteotomy surround plate (131), the second osteotomy surround plate (132), and the third osteotomy surround plate (133) form a first osteotomy groove (134) with a side opening. The second osteotomy guide mechanism (13) includes a fourth osteotomy surround plate (135) connected to the second fitting fixation block (12) via a connecting rod (14), a fifth osteotomy surround plate (136) connected to the fourth osteotomy surround plate (135), and a sixth osteotomy surround plate (137) connected to the fifth osteotomy surround plate (136); the fourth osteotomy surround plate (135), the fifth osteotomy surround plate (136), and the sixth osteotomy surround plate (137) form a second osteotomy groove (138) with a side opening; the opening of the first osteotomy groove (134) is opposite to the opening of the second osteotomy groove (138).

3. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 2, characterized in that: The second osteotomy plate (132) is fixedly connected to the fifth osteotomy plate (136), and the corresponding cutting positions of the first osteotomy groove (134) and the second osteotomy groove (138) are not on the same horizontal plane.

4. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 1, characterized in that: The osteotomy auxiliary plate (1) further includes at least one first fixation stage (15) disposed on the first fitting fixation block (11) and at least two second fixation stages (16) disposed on the second fitting fixation block (12); wherein, The first fitting fixation block (11) is fixed to the patient's greater trochanter osteotomy block by Kirschner wires inserted in the first fixation hole platform (15); the second fitting fixation block (12) is fixed to the patient's femur by Kirschner wires inserted in the second fixation hole platform (16).

5. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 4, characterized in that: The first fixing hole platform (15) includes one; the second fixing hole platform (16) includes two, and the two second fixing hole platforms (16) are arranged at an angle to each other.

6. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 1, characterized in that, The screw guide plate (2) includes: The first nail plate (21) has its inner surface fitted to the outer surface of the patient's greater trochanteric osteotomy block; The second nail plate (22) has its inner surface fitted to the corresponding outer surface of the patient's femur; The pin-setting link (25) has its two ends fixed to the first pin-setting plate (21) and the second pin-setting plate (22), respectively. At least two upper guide screw semi-enclosed protrusions (23) are set on the first screw placement plate (21), and the guide screw direction of the upper guide screw semi-enclosed protrusions (23) is from the greater trochanteric osteotomy block of the patient to the femur; At least two lower guide screw round bosses (24) are disposed on the second screw placement plate (22), and the guide screw direction of the lower guide screw round bosses (24) is from the greater trochanter of the patient to the lesser trochanter.

7. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 6, characterized in that: The lower guide pin round boss (24) includes two, and the two lower guide pin round bosses (24) are arranged alternately.

8. The hip joint surgical dislocation approach osteotomy and screw placement guide assembly according to claim 6, characterized in that: The upper guide nail semi-enclosed protrusion (23) includes four, and the four upper guide nail semi-enclosed protrusions (23) are evenly distributed on the first nail plate (21), and the upper guide nail semi-enclosed protrusions (23) surround each other at 240 degrees.

Images