Combined internal fixation bone fracture plate for iliac fracture

Abstract

The invention relates to a combined type internal fixation bone fracture plate for iliac fracture, and belongs to the technical field of medical instruments, the combined type internal fixation bone fracture plate for iliac fracture comprises a front side bone fracture plate body and an outer side bone fracture plate body, the two bone fracture plate bodies are used for vertically fixing fracture blocks, the two bone fracture plate bodies can be used in a combined mode or independently according to different fracture types, the front bone fracture plate body is designed to be attached to the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the ilium of the human body, and the outer bone fracture plate body is designed to be attached to the iliac crest bone surface, from the anterior superior iliac spine to the posterior superior iliac spine, of the ilium of the human body. The front bone fracture plate is designed to be attached to the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the ilium of the human body, the outer bone fracture plate is designed to be attached to the iliac crest bone surface, from the anterior superior iliac spine to the posterior superior iliac spine, of the ilium of the human body, the shape of the bone fracture plate does not need to be molded on site in the operation process, and the bone fracture plate is designed to be thin, small in operation wound and small in damage to soft tissue of a patient; operation time is saved, and patient prognosis is good.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, 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 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 bone structures such as the spine, sacrum and ischium. Its anatomical position is closely related to its function. Its upper boundary is the iliac ridge, 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 fracture type, 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 joint approach, ilioinguinal approach, etc. The advantage of open reduction and internal fixation is that the surgeon can directly visualize the injured area at the incision and perform reduction. However, due to the deep injury site and irregular anatomical structure of iliac fracture, 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 and causing more intraoperative bleeding, 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, and the operation more difficult. There are problems such as reduction failure and uncertain fixation effect. Summary of the invention

[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 present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A combined internal fixation bone plate for iliac fractures, comprising two bone plate bodies, a front side and an outer side. The two bone plate bodies vertically fix the fracture fragments. The two bone plate bodies can be used in combination or individually for different fracture types. The front side bone 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, and the outer side bone 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 bone 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 arranged alternately 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 fracture plate body.

[0010] As a further optimization solution of the present invention, grooves are formed 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 scheme 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 fracture plate are rounded.

[0014] The beneficial effects of the present invention are:

[0015] 1. The present invention adopts a front bone plate designed to fit the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the human ilium, and a lateral bone plate designed to fit the bone surface of the iliac crest from the anterior superior iliac spine to the posterior superior iliac spine of the human ilium. There is no need to shape the bone plate on site during surgery. The bone plate is designed to be thin, with a weak foreign body sensation, a small surgical incision, little damage to the patient's soft tissue, saving surgery time, and a good prognosis for the patient.

[0016] 2. The bone plate of the present invention can be fixed and reset at the same time during the operation, and the bone plate can be used as a reset template for reset, and can also be reset in the coronal axis and sagittal axis directions, which greatly reduces the difficulty of the operation and enhances the fixation effect. Each bone plate has a sliding pressure reset hole for reset and sliding pressure, as well as a positioning and temporary fixation hole for temporary fixation, with sufficient adjustment space, and is more convenient to use.

[0017] 3. The locking and pressurizing holes of the bone plate in the present invention are all locking and pressurizing holes, which will not change due to stress concentration during the fixation process due to unreasonable design of the bone plate, and the fixation is more firm. The bone plate uses rounded corners to avoid soft tissue irritation, which is safer to use. There are grooves on both sides of the bone plate to facilitate shaping during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0019] Figure 2 It is a top view three-dimensional structure schematic diagram of the present invention;

[0020] Figure 3 This is the use diagram a of the bone fracture plate of the present invention;

[0021] Figure 4 This is the use diagram b of the bone fracture plate of the present invention;

[0022] Figure 5 This is the use diagram c of the bone fracture plate of the present invention;

[0023] Figure 6 This is the use diagram d of the bone fracture plate body 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 further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here 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. Technical personnel 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 lateral bone 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. The bone plate body 1 is arranged from the front to the back in sequence: positioning and temporary fixation holes 2 with a diameter of 2.1mm, and locking and pressurizing 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 and pressurizing holes 3; a sliding pressurizing reduction hole 4 with a length of 14mm, a locking and pressurizing 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, and 7-9 pairs of grooves 5 on both sides of the bone plate body 1, aligned with the positioning and temporary fixation holes 2 between the locking and pressurizing 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. The bone plate body 1 is arranged from the front to the back in the following order: positioning and temporary fixation holes 2 with a diameter of 2.1mm, and locking and pressurizing holes 3 with a diameter of 3.5mm, alternating between, with a total of 5-7 positioning and temporary fixation holes 2 and 4-6 locking and pressurizing holes 3; a sliding pressurizing and resetting hole 4 with a length of 14mm, a locking and pressurizing 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, and 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 and pressurizing holes 5.

[0028] Example 2

[0029] like Figure 1 , Figure 3 and Figure 4As shown in the figure, for LCI type I and LCI type II 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 determination of the position, the most anterior locking pressure hole 3 is firstly fixed with a common screw for pressure fixation and the plate and the bone surface are fitted. 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 determination of the position, a common screw is used to pressurize and fix the reduction hole 4 of the lateral plate. Fix, pull the fracture fragments, so that the fracture fragments are reduced and fixed with the anatomical plate as the reduction template, remove the rearmost Kirschner wire, use the lateral plate as the reduction template, use reduction forceps and Kirschner wire to assist in reduction, see through, adjust, and determine the position again, fix the remaining locking and pressurizing holes 3 one by one with locking screws according to actual conditions, remove the ordinary screws of the sliding hole and the most anterior locking and pressurizing hole 3, and 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.

[0030] Example 3

[0031] like Figure 2 and Figure 5 As shown, for Type A1.2 fractures in the Ti le 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 determination of the position, the pressure hole 3 is first locked at the anteriormost side and fixed with a common screw for pressure fixation, and the plate and the 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 determination of the position, a common screw is used to pressurize and fix the sliding pressure reduction hole 4 of the anterior plate. Fix, pull the fracture fragments, so that the fracture fragments are reduced and fixed with the anatomical plate as the reduction template, remove the rearmost Kirschner wire, use the anterior bone plate as the reduction template, use reduction forceps and Kirschner wire to assist in reduction, see through, adjust, and determine the position again, fix the remaining locking and pressurizing holes 3 one by one with locking screws according to actual conditions, remove the sliding hole and the ordinary screws of the most anterior locking and pressurizing hole 3, and finally fix the most anterior locking and pressurizing hole 3 with locking screws, remove all remaining Kirschner wires. 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 re-temporarily fixed.

[0032] Example 4

[0033] like Figure 1 , Figure 2 , Figure 6 As shown in the figure, for Type A2.1 fractures in the Tile classification, the anterior and lateral plates are used for combined fixation at the same time, and the fracture is reduced in the coronal and sagittal (anteroposterior) directions respectively. 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 locate and temporarily fix the temporary fixation hole 2 at the most anterior side. After fluoroscopy, adjustment, and determination of the position, the pressure hole 3 is first locked at the most anterior side and fixed with a common screw to apply pressure and fix the plate and the bone surface, and then the plate is removed. Except for the topmost Kirschner wire, a 2mm Kirschner wire is inserted into the last positioning and temporary fixation hole 2 of the anterior plate for temporary fixation. After fluoroscopy, adjustment, and determination of position, ordinary screws are used to slide and pressurize the reduction hole 4 of the anterior plate for fixation. The fracture fragment is pulled so that the fracture fragment is reduced and fixed with the anatomical plate as the reduction template. The last Kirschner wire is removed, and the anterior plate is used as the reduction template. The reduction forceps and Kirschner wire are used to assist in reduction. After fluoroscopy, adjustment, and determination of position again, the most anterior part of the lateral plate is inserted. Place the anterior superior iliac spine on the side, use a 2mm Kirschner wire to temporarily fix the most anterior positioning and temporary fixation hole 2, after fluoroscopy, adjustment, and determination of the position, first use ordinary screws to pressurize and fix the most anterior locking and pressurizing hole and make the bone plate and the bone surface fit, remove the most anterior Kirschner wire, insert a 2mm Kirschner wire into the most posterior positioning and temporary fixation hole of the lateral plate for temporary fixation, after fluoroscopy, adjustment, and determination of the position, use ordinary screws to pressurize and fix the sliding pressurization reduction hole 4 of the lateral plate, pull the fracture fragment, and reduce and fix the fracture fragment with the anatomical plate as the reduction template, remove the most posterior Kirschner wire, use the lateral plate as the reduction template, and use reduction forceps and Kirschner wires to assist in reduction, fluoroscopy, adjustment, and determination of the position again, fix the remaining locking and pressurizing holes 3 of the two plates one by one with locking screws according to the actual situation, remove the ordinary screws of the sliding holes and the most anterior locking and pressurizing holes 3 of the two plates, finally fix the most anterior locking and pressurizing holes 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-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A combined internal fixation bone plate for iliac fractures, comprising two bone plate bodies (1) on the front side and the outer side, Features: The two bone fracture plates (1) are used to vertically fix the fracture fragments. The two bone fracture plates (1) can be used in combination or separately for different fracture types. The front bone fracture plate (1) is designed to fit the bone surface between the anterior superior iliac spine and the anterior inferior iliac spine of the human ilium, and the outer bone fracture plate (1) is designed to fit the bone surface of the iliac crest from the anterior superior iliac spine to the posterior superior iliac spine of the human ilium. The bone fracture plate (1) is provided with a locking and pressurizing hole (3) for locking and pressurizing.

2. A combined internal fixation bone plate for iliac fracture according to claim 1, Features: The diameter of the locking and pressurizing holes (3) is 3.5 mm.

3. A combined internal fixation bone plate for iliac fracture according to claim 2, Features: 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 alternately.

4. A combined internal fixation bone plate for iliac fracture according to claim 3, Features: The bone fracture plate body (1) is provided with a sliding pressure reduction hole (4) with a length of 14 mm.

5. The combined internal fixation bone plate for iliac fracture according to claim 3, Features: 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. A combined internal fixation bone plate for iliac fracture according to claim 4, Features: The outermost side of the bone fracture 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 resetting hole (4) with a length of 14 mm.

7. A combined internal fixation bone plate for iliac fracture according to claim 1, Features: The distance between each hole on the bone plate body (1) is 2 mm.

8. The combined internal fixation bone plate for iliac fracture according to claim 1, Features: The edges of the bone fracture plate body (1) are all rounded.

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