CN217338790U - Femoral shaft deformity osteotomy correction fixing steel plate - Google Patents
Femoral shaft deformity osteotomy correction fixing steel plate Download PDFInfo
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- CN217338790U CN217338790U CN202120835111.XU CN202120835111U CN217338790U CN 217338790 U CN217338790 U CN 217338790U CN 202120835111 U CN202120835111 U CN 202120835111U CN 217338790 U CN217338790 U CN 217338790U
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Abstract
The utility model relates to a femoral shaft deformity osteotomy correction fixing steel plate, which comprises a steel plate body, wherein the middle part of the steel plate body is provided with a bending radian, the inner side surface of the bending radian of the steel plate body is provided with a bulge, and the contour of the bulge is consistent with the depression caused by closed resetting of a wedge-shaped osteotomy; the curvature radian is consistent with the surface radian and the backbone direction of the protrusion and the cortex of the orthopedic bone of the current patient; the steel plate body is provided with a plurality of first positioning screw holes and a plurality of second positioning screw holes at intervals, and the first positioning screw holes and the second positioning screw holes are arranged along the direction of the steel plate and are respectively positioned on two sides of the bending radian.
Description
Technical Field
The utility model relates to a medical treatment assists the utensil, especially relates to a fixed steel sheet is corrected in osteotomy of femoral shaft deformity.
Background
The femur is the longest tubular bone of the human body and is also an important weight bearing bone of the lower limb. The deformity of femoral shaft is often caused by trauma, congenital dysplasia, improper operation treatment and the like, the abnormality of the mechanical axis of the lower limb is often combined, the functions of hip joint and knee joint are affected, and the limb disuse is caused by long-term abnormal force line.
A great deal of research shows that the femoral shaft osteotomy correction is an effective means for restoring the anatomical axis of the femoral shaft. The current internal fixation for femur osteotomy orthopedics in clinic is intramedullary nail or straight bone fracture plate. In which intramedullary nails occupy a large volume of the medullary cavity and may disrupt the intramedullary environment, affecting the potential risk of bone metabolism. In addition, the malformed bone is often accompanied by the abnormality of the medullary cavity, so that the traditional intramedullary nail cannot meet the requirements of the orthopedic fixation of the femoral osteotomy. Because the deformed bone anatomical structure is different from a normal bone, the straight bone fracture plate can not be completely attached to the surface of the femur, so that soft tissues are easily irritated, normal joint functions are interfered, and complications such as skin necrosis, internal fixation failure and the like are easily caused. Although the bending internal fixation can achieve a certain degree of attachment, the repeated bending not only increases the operation time of the operation, but also reduces the mechanical property of the bone fracture plate, is easy to generate fatigue fracture, and influences the bone cutting healing and the limb function rehabilitation. The screw track can be changed, and the risk of nerve and blood vessel injury is increased.
Therefore, a correction and fixation system which can be used after correction of femoral shaft deformity and is favorable for femoral rehabilitation according to individual requirements of patients is needed.
Disclosure of Invention
The utility model aims at solving in the current femoral shaft internal fixation steel sheet, can't be attached completely with bone cortex, influence the problem of backbone position healing speed and easily cause the complication, provide a fixed steel sheet is corrected to the femoral shaft osteotomy that uses after the deformity of femoral shaft is corrected. Fixed steel sheet of correction utilize computer aided design to cut the orthopedic scheme of bone according to orthopedic principle customization, obtain the femoral shaft model after femoral shaft deformity patient cuts the bone orthopedic, the fixed steel sheet of correction of surface radian and backbone direction unanimity of customization and preparation completely with current patient's bone cortex simultaneously, realized the orthopedic individuation of femoral shaft internal fixation, customization and accurate design.
A femoral shaft deformity osteotomy correction fixing steel plate comprises a steel plate body, wherein the middle part of the steel plate body is provided with a bending radian, the inner side surface of the bending radian of the steel plate body is provided with a bulge, and the contour of the bulge is consistent with a depression caused by closed reduction of a wedge-shaped osteotomy; the curvature radian is consistent with the surface radian and the backbone direction of the protrusion and the cortex of the orthopedic bone of the current patient;
the steel plate body is provided with a plurality of first positioning screw holes and a plurality of second positioning screw holes at intervals, and the first positioning screw holes and the second positioning screw holes are arranged along the direction of the steel plate and are respectively positioned on two sides of the bending radian.
Further, the surface radian and the backbone direction of the cortical bone of the patient after the current orthopedic treatment are obtained by utilizing a three-dimensional model reconstructed from a CT image of the patient before the operation and customizing an orthopedic scheme according to an orthopedic principle and implementing simulation.
Further, the correcting fixed steel plate is manufactured by computer aided design software according to the CT image of the patient before the operation and is processed and manufactured.
Furthermore, the first positioning screw hole and the second positioning screw hole have the same aperture.
Furthermore, the first positioning screw holes and the second positioning screw holes are the same in number.
Furthermore, the first positioning screw hole and the second positioning screw hole are vertical screw holes.
Furthermore, two end parts of the correcting and fixing steel plate are of a round angle structure.
Furthermore, when the bone plate is used, the position of the bulge corresponds to a recess caused after the wedge-shaped osteotomy is closed and reset, and perfect attachment of the steel plate and the cortical bone is ensured.
Preferably, the thickness of the steel plate body is 5 mm.
Preferably, the number of the first positioning screw hole and the second positioning screw hole is 4 respectively.
Compared with the prior art, the utility model discloses beneficial effect and showing the progress and lie in:
fixed steel sheet of correction utilize computer aided design to cut the orthopedic scheme of bone according to orthopedic principle customization, obtain the femoral shaft model after femoral shaft deformity patient cuts the bone orthopedic, the fixed steel sheet of correction of surface radian and backbone direction unanimity of customization and preparation completely with current patient's bone cortex simultaneously, realized the orthopedic individuation of femoral shaft internal fixation, customization and accurate design.
Use the utility model discloses a during the fixed steel sheet, can realize with the orthopedic back bone cortex of patient's femoral shaft perfectly attached, reduce and the soft tissue between the friction, increase the stability of fix with screw, reduce the incidence of complications such as skin necrosis, internal fixation inefficacy.
Drawings
Fig. 1 is a front view of an orthopedic fixation plate according to the present invention;
fig. 2 is a schematic side view of the fitting of the corrective fixing steel plate and screw according to the present invention;
fig. 3 is a using state diagram of the aligning and fixing steel plate of the present invention fitted with a screw in the femoral shaft.
In the figure:
1: the steel plate body 2: curvature of arc 3: projection
4: first location screw 5: second positioning screw hole 6: end part
7: a fracture line 8: screw nail
Detailed Description
In order to make the objects, technical solutions, advantages and significant progress of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings provided in the embodiments of the present invention, and it is obvious that all of the described embodiments are only some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "fixed," "connected," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected or movably connected, or may be integrated; the connection can be direct connection, indirect connection through an intermediate medium or invisible signal connection, and can be the communication inside two elements or the interaction relation of the two elements; unless otherwise specifically defined, specific meanings of the above terms in the present invention can be understood as specific cases by those of ordinary skill in the art.
It should be noted that the terms "first", "second", "third", etc. in the description and claims of the present invention are used only for distinguishing different objects, and are not used for describing a specific order.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
As shown in fig. 1-3, the femoral shaft deformity osteotomy correction fixing steel plate of the present invention comprises a steel plate body 1, the front of which is based on the shaft trend, the middle of the steel plate body has a bending radian 2 (as shown in fig. 1, fig. 2 and fig. 3 show the side view of the steel plate body 1, so the bending radian 2 is not shown), after the osteotomy correction, the shaft can be bent at a certain angle at the position of the fracture line 7, so the correction fixing steel plate of the present invention is slightly bent like the shaft after the correction in the front. The inner side surface of the steel plate body at the bending radian is provided with a bulge 3; the curvature radian 2 is consistent with the surface radian of the current bone cortex of a patient after orthopedic treatment and the backbone direction of the protrusion 3, namely the curvature is the same as the front arch radian of the femoral backbone after orthopedic treatment of the patient.
The steel sheet body 1 is gone up the spaced setting and is equipped with 4 first location screw holes 4 and 4 second location screw holes 5, first location screw hole 4 with second location screw hole 5 is followed the steel sheet moves towards the trompil, and is located the both sides of crooked radian 2 respectively. In order not to influence the mechanical property of the steel plate, the thickness of the steel plate is designed to be about 5mm, and 4 screw holes are respectively designed at the upper end and the lower end of the fracture line and used for fixing the fractured ends of the femoral shaft after orthopedic treatment. The 4 screws 8 on each broken end are respectively positioned at the center positions of the left end and the right end of the steel plate and are arranged in a parallel mode.
The manufacturing method of the femoral shaft deformity osteotomy correction fixing steel plate comprises the following steps:
step 1: the method comprises the steps of importing CT image data of a patient before operation into a computer three-dimensional reconstruction system, customizing an osteotomy correction scheme according to a correction principle to obtain a femoral shaft model of a femoral shaft malformed patient after osteotomy correction, and customizing and manufacturing a correction fixing steel plate which is completely consistent with the surface radian of the cortical bone of the current patient and the direction of the femoral shaft according to the length of the femur of the patient, the change and the characteristics of the surface radian of the cortical bone, wherein the middle part of the steel plate body 1 is provided with a curvature 2, and the inner side surface of the curvature part of the steel plate body is provided with a protrusion; the curvature radian 2 is consistent with the surface radian and the backbone direction of the protrusion 3 and the cortex of a current patient after orthopedic treatment;
and 2, step: and processing and forming the obtained steel plate model, for example, printing the steel plate by using 3D printing and forming equipment, and then performing subsequent operations such as polishing and the like to obtain the correcting and fixing steel plate.
During the use, will bellied position just remedies because of the wedge cuts the sunken that causes after the bone closure resets, guarantees the perfect attached of steel sheet and cortex of bone, fixes in putting into first location screw 4 and second location screw 5 respectively with screw 8 again.
The side view of the invention is completely the same as the radian of the anterior arch of the femoral shaft after the orthopedic treatment of a patient, thereby ensuring the complete attachment of a steel plate and cortical bone, reducing the friction with soft tissues and simultaneously enhancing the stability of the screw. All corners of the steel plate are designed into fillets, so that soft tissues are prevented from being irritated after the steel plate is implanted, unnecessary damage is generated, and healing is influenced. In addition, the invention customizes the scheme of the femoral shaft deformity osteotomy orthopedic surgery by using the computer-assisted technology and designs and manufactures the steel plate with the radian completely same as that of the anterior arch of the femoral shaft after the orthopedic surgery of the patient, thereby effectively realizing the individualized and customized treatment, solving the problems that the traditional femoral shaft deformity osteotomy internal fixation steel plate is difficult to realize individualized matching and has poor stability, and having good biomechanical stability.
Whole steel sheet adopts medical correction steel sheet material, and it has certain elasticity and toughness, when the installation, guarantees this arc and laminates the front arch radian completely, ensures the board is attached completely with the cortex lycii, reduces and the soft tissue between the friction, strengthens the stability of screw simultaneously.
Optionally, in practical application, according to the condition of a patient, the first positioning screw hole 4 and the second positioning screw hole 5 may have the same aperture, or different apertures may be adopted.
Optionally, according to the actual condition of the patient, the first positioning screw hole 4 and the second positioning screw hole 5 are vertical screw holes, and may also be inclined screw holes.
Optionally, the length of the steel plate and the screw hole pitch are adjusted according to the actual condition of the patient.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the embodiments can be replaced with equivalents, without departing from the scope of the embodiments of the present invention, and the technical solutions can not be modified or replaced by the modifications, the modifications and the substitutions in the non-essential scope of the present invention.
Claims (9)
1. The femoral shaft deformity osteotomy correction fixing steel plate is characterized by comprising a steel plate body (1), wherein the middle of the steel plate body (1) is provided with a bending radian (2), the inner side surface of the bending radian (2) of the steel plate body (1) is provided with a protrusion (3), and the contour of the protrusion (3) is consistent with a depression caused by closed reduction of a wedge-shaped osteotomy; the curvature radian (2) and the protrusion (3) are consistent with the surface radian and the backbone direction of the current orthopedic cortex of the patient;
the steel plate is characterized in that a plurality of first positioning screw holes (4) and a plurality of second positioning screw holes (5) are arranged on the steel plate body (1) at intervals, the first positioning screw holes (4) and the second positioning screw holes (5) are arranged along the steel plate, and the steel plate is provided with holes along the trend, and is located on two sides of the bending radian (2) respectively.
2. The fixation steel plate of claim 1, wherein the corrective fixation steel plate is a fixation steel plate manufactured by computer aided design software based on a pre-operative CT image of a patient and machining the same.
3. Fixing plate according to claim 1, characterized in that said first (4) and second (5) positioning screw holes have the same diameter.
4. Fixing plate according to claim 1, characterized in that said first (4) and second (5) positioning screw holes are equal in number.
5. Fixing plate according to claim 1, characterized in that said first (4) and second (5) positioning screw holes are vertical screw holes.
6. Fixing plate according to claim 1, characterized in that the two ends (6) of the straightening plate are of rounded configuration.
7. The fixed steel plate according to claim 1, characterized in that the thickness of the steel plate body (1) is 5 mm.
8. The fixing steel plate according to claim 1, wherein the number of the first positioning screw holes (4) and the second positioning screw holes (5) is 4, respectively.
9. The anchoring steel plate according to claim 1, characterized in that the position of the protuberance (3) corresponds, in use, to the concavity obtained after the reduction of the wedge-shaped osteotomy closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120835111.XU CN217338790U (en) | 2021-04-22 | 2021-04-22 | Femoral shaft deformity osteotomy correction fixing steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120835111.XU CN217338790U (en) | 2021-04-22 | 2021-04-22 | Femoral shaft deformity osteotomy correction fixing steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217338790U true CN217338790U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120835111.XU Active CN217338790U (en) | 2021-04-22 | 2021-04-22 | Femoral shaft deformity osteotomy correction fixing steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217338790U (en) |
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2021
- 2021-04-22 CN CN202120835111.XU patent/CN217338790U/en active Active
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