Combined internal fixation bone fracture plate for iliac fracture
By designing a combined internal fixation plate, the problems of long operation time, large trauma and high complications in iliac fracture surgery are solved, precise reduction and stable fixation are achieved, and the treatment effect of iliac fracture is improved.
Patent Information
- Application Number
- CN202422246651.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-09-13
AI Technical Summary
Traditional open reduction and internal fixation of iliac fractures has problems such as long operation time, large tissue trauma, high bleeding volume, high risk of complications, and uncertain fixation effect. Especially under the complex anatomical structure and high-energy trauma of iliac fractures, it is difficult to achieve effective reduction and fixation.
A combined internal fixation plate was designed, including two plates, the anterior and lateral, which fit the different anatomical structures of the ilium respectively. It is equipped with locking pressure holes, positioning and temporary fixation holes. The sliding pressure reduction holes can achieve precise reduction and stable fixation of the fracture fragments, reducing surgical trauma and time.
It simplifies the surgical process, reduces soft tissue damage, lowers surgical difficulty and complication risk, improves fixation effect and reduction accuracy, and shortens operation time.
Smart Images
Figure CN223311232U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a combined internal fixation bone plate for iliac fractures. Background Art
[0002] The pelvis is a complete closed bone ring that connects the spine and lower limbs. It is composed of the hip bone, sacrum and coccyx. Pelvic fractures are often accompanied by injuries to the blood vessels, nerves, soft tissues and pelvic organs around the pelvis. Among them, iliac fractures are a common type of pelvic injury, which is complicated and difficult to treat. The ilium is located on the side of the pelvis and is connected to bony structures such as the spine, sacrum and ischium. Its anatomical position is closely related to its function. Its upper boundary is the iliac spine, the lower boundary is the upper edge of the ischium, the anterior boundary is the branch of the pubic bone, and the posterior boundary is the lateral side of the sacrum. Due to the complex anatomical structure of the ilium and the high-energy trauma that often accompanies it, iliac fractures often cause damage to surrounding tissues, such as nerve and blood vessel damage, which in turn leads to a high disability rate and complications. Therefore, the diagnosis and treatment of iliac fractures has become an important challenge in trauma medicine. Its treatment plan needs to comprehensively consider the type of fracture, the patient's overall health status and postoperative rehabilitation needs.
[0003] The traditional surgical method for iliac fractures is open reduction and internal fixation. Commonly used surgical approaches include posterolateral approach, anterolateral approach, ventral approach, posterior hip approach, ilioinguinal approach, etc. The advantage of open reduction and internal fixation is that the surgeon can directly visualize the injury site at the incision and perform reduction. However, due to the deep injury site and irregular anatomical structure of iliac fractures, internal fixation often requires a long operation time. During the operation, the shape of the bone plate must be shaped on site and continuously inserted into the patient's body for adjustment, which causes great tissue trauma and the risk of iatrogenic neurovascular injury, making the operation more difficult. The amount of intraoperative bleeding is relatively high, which may increase the risk of surgical complications such as anemia and infection. In addition, iliac fractures are generally more complicated, with fractures displaced in two planes, making reduction difficult. The operation is more difficult and there are problems such as reduction failure and uncertain fixation effect. Utility Model Content
[0004] The purpose of the present invention is to provide a combined internal fixation bone plate for iliac fractures with a simple structure and reasonable design in order to solve the above problems.
[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0006] A combined internal fixation plate for iliac fractures includes two plate bodies, a front plate body and an outer plate body. The two plate bodies vertically fix the fracture fragments. The two plate bodies can be used in combination or individually for different fracture types. The front plate body is designed to fit the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the human ilium. The outer plate body is designed to fit the iliac crest bone surface from the anterior superior iliac spine to the posterior superior iliac spine of the human ilium. The plate body is provided with locking and pressurization holes for locking and pressurization.
[0007] As a further optimization solution of the present invention, the diameter of the locking pressure holes is 3.5 mm.
[0008] As a further optimization solution of the present invention, a positioning and temporary fixing hole with a diameter of 2.1 mm for positioning is opened on the side of the locking and pressurizing hole, and the locking and pressurizing hole is staggered with the positioning and temporary fixing holes.
[0009] As a further optimization solution of the present invention, a sliding pressure reduction hole with a length of 14 mm is opened on the bone plate body.
[0010] As a further optimization solution of the present invention, grooves are provided on both sides of the bone plate body and are aligned with the positioning and temporary fixing holes between the locking and pressurizing holes.
[0011] As a further optimization solution of the present invention, the outermost side of the bone plate body is provided with a positioning and temporary fixation hole with a diameter of 2.1 mm, a locking pressure hole with a diameter of 3.5 mm, and a sliding pressure reduction hole with a length of 14 mm.
[0012] As a further optimization solution of the present invention, the distance between each hole on the bone plate body is 2 mm.
[0013] As a further optimization solution of the present invention, the edges of the bone plate are all rounded.
[0014] The beneficial effects of the present invention are:
[0015] 1. The utility model has an anterior plate designed to fit the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the human ilium, and an lateral plate designed to fit the iliac crest bone surface from the anterior superior iliac spine to the posterior superior iliac spine of the human ilium. There is no need to shape the plate on site during surgery. The plate is thin in design, has a weak foreign body sensation, a small surgical incision, and little damage to the patient's soft tissue, thus saving operation time and improving the patient's prognosis.
[0016] 2. The plate of this utility model can be fixed and repositioned simultaneously during surgery, using the plate as a repositioning template. Repositioning can also be performed in both the coronal and sagittal axes, significantly reducing surgical difficulty and enhancing fixation effectiveness. Each plate has sliding pressure reduction holes for repositioning and sliding pressure, as well as positioning and temporary fixation holes for temporary fixation, providing ample adjustment space and making it more convenient to use.
[0017] 3. The locking and pressurizing holes of the bone plate in this utility model are all locked and pressurized, which will not cause changes due to stress concentration during fixation due to improper plate design, making the fixation more secure. The plate uses rounded corners to avoid soft tissue irritation and is safer to use. The plate has grooves on both sides to facilitate shaping during surgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model in a front view;
[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;
[0020] Figure 3 This is a diagram showing the use of the bone fracture plate of the present invention;
[0021] Figure 4 This is a diagram showing the use of the bone fracture plate of the present invention;
[0022] Figure 5 This is a diagram showing the use of the bone fracture plate of the present invention;
[0023] Figure 6 This is a diagram showing the use of the bone fracture plate of the present invention.
[0024] In the figure: 1. Bone plate body; 2. Positioning and temporary fixation holes; 3. Locking pressure hole; 4. Sliding pressure reduction hole; 5. Groove. DETAILED DESCRIPTION
[0025] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.
[0026] Example 1
[0027] like Figure 1 and Figure 2As shown, the shape of the outer plate body 1 fits the iliac crest bone surface of the human ilium from the anterior superior iliac spine to the posterior superior iliac spine, with a length of 98-117mm, a width of 7.5mm, and a thickness of 2.5mm. From the front to the back side, the plate body 1 has: positioning and temporary fixation holes 2 with a diameter of 2.1mm, and locking pressure holes 3 with a diameter of 3.5mm, alternating, with a total of 8-10 positioning and temporary fixation holes 2 and 7-9 locking pressure holes 3; a sliding pressure reduction hole 4 with a length of 14mm, a locking pressure hole 3 with a diameter of 3.5mm, and a positioning and temporary fixation hole 2 with a diameter of 2.1mm, with an interval of 2mm between the holes. There are 7-9 pairs of grooves 5 on both sides of the plate body 1, which are aligned with the positioning and temporary fixation holes 2 between the locking pressure holes 3 ; The shape of the front bone plate body 1 fits the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the human ilium, with a length of 69.5-88.5mm, a width of 7.5mm, and a thickness of 2.5mm. From the front to the back side, the bone plate body 1 has: positioning and temporary fixation holes 2 with a diameter of 2.1mm, and locking pressure holes 3 with a diameter of 3.5mm alternating, with a total of 5-7 positioning and temporary fixation holes 2 and 4-6 locking pressure holes 3; a sliding pressure reduction hole 4 with a length of 14mm, a locking pressure hole 3 with a diameter of 3.5mm, and a positioning and temporary fixation hole 2 with a diameter of 2.1mm. The interval between the holes is 2mm. There are 4-6 pairs of grooves 5 on both sides of the bone plate body 1, which are aligned with the positioning and temporary fixation holes 2 between the locking pressure holes 5.
[0028] Example 2
[0029] like Figure 1 、 Figure 3 and Figure 4As shown in the figure, for LCII and LCIII fractures in the Young and Burgress classification, and Type A1.1 fracture in the Tile classification, a lateral plate is used alone, and the plate is used as a reduction template for reduction. The most anterior side of the lateral plate is placed on the anterior superior iliac spine, and a 2mm Kirschner wire is used to temporarily fix it in the most anterior positioning and temporary fixation hole 2. After fluoroscopy, adjustment, and confirmation of the position, the most anterior locking pressure hole 3 is first pressed and fixed with a common screw to make the plate and the bone surface fit together. The most anterior Kirschner wire is removed, and a 2mm Kirschner wire is inserted into the most posterior positioning and temporary fixation hole of the lateral plate for temporary fixation. After fluoroscopy, adjustment, and confirmation of the position, a common screw is used to pressurize and fix it. The screw is pressed and fixed in the sliding pressure reduction hole 4 of the lateral plate, and the fracture fragment is pulled so that the fracture fragment is reduced and fixed with the anatomical plate as the reduction template. The Kirschner wire on the rearmost side is removed, and the lateral plate is used as the reduction template. The reduction forceps and Kirschner wire are used to assist in reduction. The X-ray, adjustment and position are determined again. The remaining locking pressure holes 3 are fixed one by one with locking screws according to the actual situation. The ordinary screws of the sliding hole and the most front locking pressure hole 3 are removed, and the most front locking pressure hole 3 is finally fixed with a locking screw. All remaining Kirschner wires are removed. It should be noted that if the Kirschner wire or ordinary screw affects the reduction of the fracture during the reduction process, the Kirschner wire should be removed or the ordinary screw should be withdrawn and temporarily fixed again.
[0030] Example 3
[0031] like Figure 2 and Figure 5 As shown, for Type A1.2 fractures in the Tile classification, the anterior plate is used alone, and the plate is used as a reduction template for reduction. The anteriormost side of the anterior plate is placed on the anterior superior iliac spine, and a 2mm Kirschner wire is used to temporarily fix it at the uppermost positioning and temporary fixation hole 2. After fluoroscopy, adjustment, and confirmation of the position, the pressure hole 3 on the anteriormost side is first locked and fixed with a common screw for pressure fixation, and the plate and bone surface are fitted. The uppermost Kirschner wire is removed, and a 2mm Kirschner wire is inserted into the rearmost positioning and temporary fixation hole 2 of the anterior plate for temporary fixation. After fluoroscopy, adjustment, and confirmation of the position, a common screw is used to slide the pressure reduction hole 4 of the anterior plate. Apply pressure to fix, pull the fracture fragments, and reduce and fix them with the anatomical plate as the reduction template. Remove the Kirschner wire on the rearmost side, use the anterior plate as the reduction template, and use reduction forceps and Kirschner wire to assist in reduction. Perform fluoroscopy, adjustment, and position determination again. Fix the remaining locking and pressurizing holes 3 one by one with locking screws according to actual conditions. Remove the ordinary screws from the sliding hole and the most anterior locking and pressurizing hole 3. Finally fix the most anterior locking and pressurizing hole 3 with locking screws. Remove all remaining Kirschner wires. Note that if the Kirschner wire or ordinary screw affects the reduction of the fracture during the reduction process, the Kirschner wire should be removed or the ordinary screw should be withdrawn and temporarily fixed again.
[0032] Example 4
[0033] like Figure 1 、 Figure 2 、 Figure 6 As shown, for Type A2.1 fractures in the Tile classification, anterior and lateral plates are used for combined fixation. Reduction is performed in the coronal and sagittal (anteroposterior) directions, respectively. The plate is used as a reduction template for reduction. The anteriormost plate is placed on the anterior superior iliac spine. A 2mm Kirschner wire is used to position and temporarily fix the anteriormost plate and temporary fixation hole 2. After fluoroscopy, adjustment, and confirmation of the position, the pressure hole 3 on the anteriormost side is first locked and fixed with ordinary screws to pressurize and fix the plate and the bone surface. Close, remove the uppermost Kirschner wire, insert a 2mm Kirschner wire into the last positioning and temporary fixation hole 2 of the anterior plate for temporary fixation, after fluoroscopy, adjustment, and confirmation of the position, use ordinary screws to slide the pressure reduction hole 4 of the anterior plate for pressure fixation, pull the fracture fragment, and reduce and fix the fracture fragment with the anatomical plate as the reduction template, remove the last Kirschner wire, use the anterior plate as the reduction template, use reduction forceps and Kirschner wire to assist in reduction, fluoroscopy, adjustment, and confirmation of the position again, and fix the lateral bone fracture. The most anterior side of the plate is placed on the anterior superior iliac spine, and a 2mm Kirschner wire is used to temporarily fix the most anterior positioning and temporary fixation hole 2. After fluoroscopy, adjustment, and confirmation of the position, the most anterior locking pressure hole is first fixed with a common screw to pressurize and fix the plate and the bone surface. The most anterior Kirschner wire is removed, and a 2mm Kirschner wire is inserted into the most posterior positioning and temporary fixation hole of the lateral plate for temporary fixation. After fluoroscopy, adjustment, and confirmation of the position, a common screw is used to slide the pressure reduction hole 4 of the lateral plate to pressurize and fix it, and pull the fracture fragment. , reduce and fix the fracture fragments using the anatomical plate as a reduction template, remove the Kirschner wire on the rearmost side, use the lateral plate as a reduction template, use reduction forceps and Kirschner wires to assist in reduction, perform fluoroscopy, adjustment, and position determination again, and fix the remaining locking and pressurizing holes 3 of the two plates one by one with locking screws according to actual conditions, remove the ordinary screws of the sliding holes and the most anterior locking and pressurizing hole 3 of the two plates, and finally fix the most anterior locking and pressurizing hole 3 of the two plates with locking screws, and remove all remaining Kirschner wires.
[0034] It should be noted that if during the reduction process, the Kirschner wire or ordinary screw affects the reduction of the fracture or the placement and fixation of another bone plate, the Kirschner wire should be removed or the ordinary screw should be withdrawn and temporarily fixed again.
[0035] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.
Claims
1. A combined internal fixation plate for iliac fractures, comprising two plate bodies (1) on the front and the outside, characterized in that: The two bone plate bodies (1) are used to vertically fix the fracture fragments. The two bone plate bodies (1) can be used in combination or individually for different fracture types. The front bone plate body (1) is designed to fit the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the human ilium. The outer bone plate body (1) is designed to fit the iliac crest bone surface from the anterior superior iliac spine to the posterior superior iliac spine of the human ilium. The bone plate body (1) is provided with a locking and pressurizing hole (3) for locking and pressurizing.
2. The combined internal fixation plate for iliac fracture according to claim 1, characterized in that: The diameter of the locking pressure holes (3) is 3.5 mm.
3. The combined internal fixation plate for iliac fracture according to claim 2, characterized in that: A positioning and temporary fixing hole (2) with a diameter of 2.1 mm for positioning is provided on the side of the locking and pressurizing hole (3), and the locking and pressurizing hole (3) and the positioning and temporary fixing hole (2) are arranged in a staggered manner.
4. The combined internal fixation plate for iliac fracture according to claim 3, characterized in that: The bone plate body (1) is provided with a sliding pressure reduction hole (4) with a length of 14 mm.
5. The combined internal fixation plate for iliac fracture according to claim 3, characterized in that: Grooves (5) aligned with the positioning and temporary fixing holes (2) between the locking and pressurizing holes (3) are formed on both sides of the bone fracture plate body (1).
6. The combined internal fixation plate for iliac fracture according to claim 4, characterized in that: The outermost side of the bone plate body (1) is provided with a positioning and temporary fixing hole (2) with a diameter of 2.1 mm, a locking pressure hole (3) with a diameter of 3.5 mm, and a sliding pressure reduction hole (4) with a length of 14 mm.
7. The combined internal fixation plate for iliac fracture according to claim 1, characterized in that: The distance between each hole on the bone plate body (1) is 2 mm.
8. The combined internal fixation plate for iliac fracture according to claim 1, characterized in that: The edges of the bone plate body (1) are all rounded.