CN210095888U - Distal femoral supracondylar fracture fixing device - Google Patents
Distal femoral supracondylar fracture fixing device Download PDFInfo
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- CN210095888U CN210095888U CN201920704631.XU CN201920704631U CN210095888U CN 210095888 U CN210095888 U CN 210095888U CN 201920704631 U CN201920704631 U CN 201920704631U CN 210095888 U CN210095888 U CN 210095888U
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- locking plate
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- head part
- outer locking
- inner locking
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- 210000000689 upper leg Anatomy 0.000 claims description 36
- 230000007704 transition Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 210000001694 thigh bone Anatomy 0.000 abstract description 4
- 240000005002 Erythronium dens canis Species 0.000 abstract 1
- 206010017076 Fracture Diseases 0.000 description 38
- 208000010392 Bone Fractures Diseases 0.000 description 33
- 210000000988 bone and bone Anatomy 0.000 description 13
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000035876 healing Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000007794 irritation Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000008733 trauma Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 208000008924 Femoral Fractures Diseases 0.000 description 2
- 230000002968 anti-fracture Effects 0.000 description 2
- 210000004233 talus Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010016454 Femur fracture Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model relates to a distal femoral supracondylar fracture fixation device, which comprises an inner locking plate and an outer locking plate, wherein the inner locking plate comprises a first head part, a first tail part and a first rod part, the first head part and the first rod part are positioned at two ends, the first head part of the inner locking plate is provided with a plurality of first locking holes, and the first head part of the inner locking plate is also provided with a plurality of first pointed convex teeth which extend towards the inner side of the posterior fossa of the femoral condyle; outer locking plate is including the second head that is located both ends, second afterbody and the second pole portion of connecting second head and second afterbody, is provided with a plurality of second locking hole on the second head of this outer locking plate, and still has a plurality of second point form dogtooth that extend the setting toward the thighbone condyle rear flank nest outside on the second head of this outer locking plate to solve the current not good problem of fixed effect when thighbone distal end outside lockplate fixes.
Description
Technical Field
The utility model relates to a fracture treatment auxiliary devices field specifically is a fixing device of supracondylar fracture of distal femur.
Background
Supracondylar fractures of the femur are fractures that occur within 5 cm of the medial and lateral condyles of the femur, excluding medial and lateral condylar fractures and intercondylar fractures. The supracondylar fracture is generally an extracapsular fracture, while the condylar fracture and the intercondylar fracture are intra-articular capsular fractures, but the supracondylar fracture and the intercondylar fracture often mutually affect each other, and are also called as intercondylar supracondylar fracture or distal femur C-type fracture. Direct violence and indirect violence are the main causes of the fracture, and are mostly seen in high-energy trauma of young and middle-aged people and low-energy trauma of old people.
At present, three methods for clinically treating the distal femoral supracondylar fracture are available:
one kind of conservative treatment, the fixation method is that the manual reduction splint or plaster is used for fixation, the trauma of the fixation method is small, the cost is low, but the fracture block is easy to displace again, the recovery time is long, the early functional exercise is not facilitated, and the serious patient can have complications such as abnormal healing or short and even bone nonunion.
And secondly, the intramedullary nail is used for fixation, the fixation method using the intramedullary nail has small wound, and the central position is adopted for fixation, but the blood circulation in the medullary cavity is easily damaged, the blood supply is influenced, and the fracture is not healed or the intramedullary nail is broken.
Thirdly, the operation incision reduction internal fixation treatment is used, and the femur far-end outer side plate is independently used for fixation, so that the treatment method has the following defects: 1. due to the influence of the shape of the femoral condyle, the distribution positions of the screws are limited, and the bone blocks at the far-end inner side part of the femur cannot be effectively and firmly fixed, so that the fracture healing is influenced or the operation fails; 2. the femur has an anterior arch on the coronal plane due to the shape of the femur, and the external tension on the sagittal plane is influenced by the tension of the lateral muscles, so that the far-end fracture block is easy to twist after fracture, while the prior art fixes the femur laterally to resist the shearing force caused by the force generated by the anterior arch shape of the femur when the fracture block is twisted; 3. the thighbone outside is the tension side, and the inboard is the pressure side, and during the fracture, the inboard is more smashed than the outside, fixes in the outside, is difficult to form effectual fixed to the kibbling fracture in inboard, even use lockplate, the inboard pressure side still is indirect fixed, and the inboard lacks stable support, easily takes place the enstrophe deformity and can not heal and lead to the internal fixation inefficacy.
In summary, the existing technique for fixing the distal femur outer locking plate widely used clinically has obvious defects, directly affects the fixing effect of the distal femur after fracture, is unfavorable for healing after fracture, and even has the possibility of operation failure, so the existing fixation of the distal femur fracture needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distal femur supracondylar fracture fixing device to solve the current distal femur outside lockplate and fix the not good problem of effect when fixing.
The specific scheme is as follows:
a distal femoral supracondylar fracture fixation device comprising an inner locking plate positioned medial to the distal femur and an outer locking plate positioned lateral to the distal femur, wherein:
the inner locking plate comprises a first head part, a first tail part and a first rod part, wherein the first head part and the first tail part are positioned at two ends of the inner locking plate, the first rod part is connected with the first head part and the first tail part, a plurality of first locking holes are formed in the first head part of the inner locking plate, and a plurality of first pointed convex teeth extending towards the inner side of the femoral condyle rear side socket are further formed in the first head part of the inner locking plate;
the outer locking plate comprises a second head part, a second tail part and a second rod part, wherein the second head part and the second tail part are positioned at two ends of the outer locking plate, the second rod part is connected with the second head part and the second tail part, a plurality of second locking holes are formed in the second head part of the outer locking plate, and a plurality of second pointed convex teeth extending towards the outer side of the femoral condyle rear side socket are further formed in the second head part of the outer locking plate.
Further, the first pointed convex teeth and the second pointed convex teeth are conical pointed convex teeth.
Furthermore, the first pointed convex teeth are directly welded and fixed on the inner locking plate, and the second pointed convex teeth are directly welded and fixed on the outer locking plate.
Furthermore, the first head part and the first rod part of the inner locking plate are transited by a first cambered surface, so that the first head part of the inner locking plate is in conformity with the inner side of the femoral condyle posterior fossa; the second head part and the second rod part of the outer locking plate are in transition through a second cambered surface, so that the second head part of the outer locking plate is in fit with the lateral side of the femoral condyle posterior fossa.
Furthermore, the inner side surface of the inner locking plate is a third cambered surface which is in fit with the inner side of the femoral condyle, and the inner side surface of the outer locking plate is a fourth cambered surface which is in fit with the outer side of the femoral condyle.
Furthermore, the edge of the first head of the inner locking plate is in a first curvature arc shape, and the edge of the second head of the outer locking plate is in a second curvature arc shape.
Furthermore, a plurality of first combining holes are formed in the first rod portion of the inner locking plate and are sequentially arranged along the length direction of the first rod portion, and a plurality of second combining holes are formed in the second rod portion of the outer locking plate and are sequentially arranged along the length direction of the first rod portion.
Furthermore, a plurality of pairs of first arc-shaped notches are arranged on two sides of the first rod part of the inner locking plate in the length direction, and each pair of first arc-shaped notches are positioned between two adjacent first combining holes; and a plurality of pairs of second arc-shaped notches are arranged on two sides of the second rod part of the outer locking plate in the length direction, and each pair of second arc-shaped notches are positioned between two adjacent second combination holes.
Furthermore, a first Kirschner wire hole is formed in the first tail portion of the inner locking plate, and a second Kirschner wire hole is formed in the second tail portion of the outer locking plate.
The utility model provides a thighbone distal end supracondylar fracture fixing device compares with prior art and has following advantage: the utility model provides a distal femur supracondylar fracture fixing device of femur adopts the inner locking plate and the outer locking plate to be locked to the inner side of the distal femur and the outer side of the distal femur respectively, the inner locking plate and the outer locking plate are locked together to effectively support the bone block at the rear side of the condyle of femur and play the effect of balance mechanics, and the torsional bone block caused by the muscles at the side can be effectively fixed to reduce the shearing force caused by the force generated by the front arch shape of the femur when the anti-fracture block is twisted; when the fracture on the inner side is more comminuted than the fracture on the outer side, the inner side comminuted bone blocks are effectively fixed by matching with the inner locking plate and the outer locking plate, the invagination deformity can be prevented, and the defect caused by the fact that the fracture blocks on the other side are not firmly fixed when the inner side or the outer side single plate of the distal femur is fixed is overcome.
Drawings
Fig. 1 shows a schematic view of an inner locking plate.
Fig. 2 shows a schematic view of the inner locking plate in another direction of view.
Fig. 3 shows a schematic view of the inner locking plate section a-a in fig. 2.
FIG. 4 shows a schematic view of section B-B of the inner locking plate of FIG. 2.
Fig. 5 shows a schematic view of the inner locking plate section C-C in fig. 2.
Fig. 6 shows a schematic view of the outer locking plate.
Fig. 7 shows a schematic view of the outer locking plate in another direction of view.
Fig. 8 shows a schematic view of the outer locking plate section D-D in fig. 6.
Fig. 9 shows a schematic view of the outer locking plate section E-E in fig. 6.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1 to 9, the present invention provides a distal condylar femoral fracture fixation device for fixing a distal femoral fracture, which includes an inner locking plate 1 positioned inside the distal femur and an outer locking plate 2 positioned outside the distal femur.
Referring to fig. 1-2, the inner locking plate 1 is a strip-shaped body, and includes a first head portion 10 at two ends, a first tail portion 12, and a first rod portion 14 connecting the first head portion 10 and the first tail portion 12, the first head portion 10 of the inner locking plate is provided with a plurality of first locking holes 100 for receiving locking nails driven into condyles, and the first head portion 10 of the inner locking plate 1 is further provided with a plurality of first pointed teeth 102 extending towards the inner side of the posterior fossa of the femoral condyle, the first pointed teeth 102 being beneficial to grasping the condyle of the femoral to prevent the inner locking plate from shifting.
Preferably, the first pointed teeth 102 are conical pointed teeth, and the conical pointed teeth have better capability of grasping the bone surface of the femoral condyle. Preferably, the first pointed teeth 102 are directly fixed to the first head 10 of the inner locking plate 1 by welding, and the first pointed teeth 102 are not loosened or loosened by external force, as opposed to being fixed by welding.
Fig. 1 and 2 show that the number of the first locking holes 100 in this embodiment is 4, 3 of the first locking holes are arranged side by side at the edge of the first head portion 10, and 1 of the first locking holes is arranged at the connection of the first head portion 10 and the first rod portion 14, which is a preferred arrangement, but not limited thereto, and the number and the position arrangement of the first locking holes 100 can be determined according to actual requirements.
Referring to fig. 1 to 2, the first rod portion 14 of the inner locking plate 1 is provided with a plurality of first coupling holes 140 sequentially arranged along a length direction of the first rod portion 14 to facilitate intraoperative selective pressurization and locking, wherein the plurality of first coupling holes 140 are substantially located on a center line of the first rod portion 14.
The first tail portion 12 of the inner locking plate 1 is provided with a first kirschner wire hole 120 to facilitate temporary fixation of the inner locking plate 1 during surgery. Wherein the first k-wire hole 120 is located approximately at the center of the first tail 12. In addition, the outer periphery of the first tail part 12 is arranged in a rounding and thinning mode so as to reduce irritation to surrounding tissues.
Referring to fig. 6-9, the outer locking plate 2 is similar to the inner locking plate 1 in design, and is a strip-shaped body, which includes a second head portion 20 at two ends, a second tail portion 22, and a second rod portion 24 connecting the second head portion 20 and the second tail portion 22, the second head portion 20 of the outer locking plate 2 is provided with a plurality of second locking holes 200, the second locking holes 200 are used for receiving locking nails driven into condyles, and the second head portion 20 of the outer locking plate 2 is further provided with a plurality of second pointed teeth 202 extending to the outside of the posterior fossa of the femoral condyle, and the second pointed teeth 202 facilitate grasping of the condyle bone surface to prevent the inner locking plate from shifting.
Preferably, the second pointed tooth 202 is a conical pointed tooth, which is the same as the first pointed tooth 102, so that it has better ability to grip the bone surface of the femoral condyle. Preferably, the second pointed teeth 202 are identical to the first pointed teeth 102 and are directly fixed to the second head 20 of the outer locking plate 2 by welding, so that the second pointed teeth 202 are not loosened or released by external force.
Fig. 1 and 2 show that the number of the second locking holes 200 in this embodiment is 3, 2 are arranged side by side at the edge of the second head portion 20, and 1 is arranged at the connection of the second head portion 20 and the second rod portion 24, which is a preferred arrangement, but not limited thereto, and the number and the position arrangement of the second locking holes 200 can be determined according to actual requirements. And a second k-wire hole 220 is formed in the middle of the second head 20 to facilitate temporary fixation of the outer locking plate 2 during surgery.
Referring to fig. 6 to 7, the second rod portion 24 of the outer locking plate 2 is provided with a plurality of second coupling holes 240 arranged in sequence along the length direction of the second rod portion 24 to facilitate selective intraoperative pressurization and locking, wherein the plurality of second coupling holes 240 are located substantially on the center line of the second rod portion 24.
The second tail portion 22 of the outer locking plate 2 is provided with a second k-wire hole 220 to facilitate temporary fixation of the outer locking plate 2 during surgery. Wherein the second k-wire hole 220 is located approximately at the center of the second tail 22. In addition, the outer periphery of the second tail portion 22 is provided with a round and blunt thinning arrangement so as to reduce the irritation to the surrounding tissues.
The femur distal supracondylar fracture fixing device adopts the inner locking plate and the outer locking plate to be respectively locked on the inner side of the femur distal end and the outer side of the femur distal end, can effectively support the bone block at the rear side of the femur condyle and play a role in balancing mechanics, and can also effectively fix the twisted bone block caused by the lateral muscles so as to reduce the shearing force caused by the force generated by the front arch form of the femur when the anti-fracture block is twisted; when the inner side is more smashed than the outer side fracture, the inner side smashing bone block is effectively fixed by matching with the inner locking plate and the outer locking plate, and the inward turning deformity can be prevented from being found. The defect caused by the fact that when the inner side or outer side single plate of the distal femur is fixed, the fracture block on the other side is not firmly fixed is overcome.
Referring to fig. 1-9, as a preferred embodiment of the present embodiment, the first head 10 and the first rod 14 of the inner locking plate 1 transition with a first curved surface 104, and the first curved surface 104 is an anatomical design conforming to the medial side of the posterior fossa of the femoral condyle, so that the first head 10 of the inner locking plate 1 conforms to the medial side of the posterior fossa of the femoral condyle, so as to facilitate driving of the locking nail into the condyle. The second head 20 and the second rod 24 of the outer locking plate 2 are transited by a second curved arc surface 204, and the second curved arc surface 204 is designed in an anatomical shape conforming to the lateral side of the femoral condyle posterior fossa, so that the second head 20 of the outer locking plate 2 conforms to the lateral side of the femoral condyle posterior fossa, and a locking nail is conveniently driven into the condyle.
Referring to fig. 1-9, as another preferred embodiment of this embodiment, the inner side surface of the inner locking plate 1 is a third curved arc surface 106 which is fit to the inner side of the femoral condyle, and the inner side surface of the outer locking plate 2 is a fourth curved arc surface 206 which is fit to the outer side of the posterior side of the femoral condyle, i.e. the inner locking plate 1 and the outer locking plate 2 are both not flat plate structures and have a certain arc anatomical design, so that the inner locking plate 1 and the outer locking plate 2 are both fit to the human body physiological bone.
Referring to fig. 1 to 9, as another preferred embodiment of the present embodiment, the edge of the first head portion 10 of the inner locking plate 1 has a first curvature arc shape, and the edge of the second head portion 20 of the outer locking plate 2 has a second curvature arc shape, wherein the first curvature arc shape is the same as the curvature of the medial ankle bone surface of the femur, and the second curvature arc shape is the same as the curvature of the lateral ankle bone surface of the femur, so as to reduce the irritation of the joint surface.
Referring to fig. 1 to 9, as still another preferred embodiment of the present embodiment, pairs of first arc-shaped recesses 142 are provided on both sides of the first rod portion 14 of the inner locking plate 1 in the length direction, and each pair of first arc-shaped recesses 142 is located on both sides between two adjacent first coupling holes 140; a plurality of pairs of second arc-shaped notches 242 are formed on both sides of the second rod portion 24 of the outer locking plate 2 in the length direction, and each pair of second arc-shaped notches 242 is formed on both sides between two adjacent second coupling holes 240. The first arc-shaped notch 142 and the second arc-shaped notch 242 can make the inner locking plate 1 and the outer locking plate 2 bend and shape to a certain extent according to individual bone difference in operation, so that the inner locking plate 1 and the outer locking plate 2 are more conformable to the femur of a patient.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A distal femoral supracondylar fracture fixation device comprising an inner locking plate positioned on the inside of the distal femur and an outer locking plate positioned on the outside of the distal femur, wherein:
the inner locking plate comprises a first head part, a first tail part and a first rod part, wherein the first head part and the first tail part are positioned at two ends of the inner locking plate, the first rod part is connected with the first head part and the first tail part, a plurality of first locking holes are formed in the first head part of the inner locking plate, and a plurality of first pointed convex teeth extending towards the inner side of the femoral condyle rear side socket are further formed in the first head part of the inner locking plate;
the outer locking plate comprises a second head part, a second tail part and a second rod part, wherein the second head part and the second tail part are positioned at two ends of the outer locking plate, the second rod part is connected with the second head part and the second tail part, a plurality of second locking holes are formed in the second head part of the outer locking plate, and a plurality of second pointed convex teeth extending towards the outer side of the femoral condyle rear side socket are further formed in the second head part of the outer locking plate.
2. The distal femoral supracondylar fracture fixation device of claim 1, wherein: the first pointed convex teeth and the second pointed convex teeth are conical pointed convex teeth.
3. The distal femoral supracondylar fracture fixation device of claim 1, wherein: the first pointed convex teeth are directly welded and fixed on the inner locking plate, and the second pointed convex teeth are directly welded and fixed on the outer locking plate.
4. The distal femoral supracondylar fracture fixation device of claim 1, wherein: the first head part and the first rod part of the inner locking plate are in transition through a first cambered surface, so that the first head part of the inner locking plate is in fit with the inner side of the femoral condyle posterior fossa; the second head part and the second rod part of the outer locking plate are in transition through a second cambered surface, so that the second head part of the outer locking plate is in fit with the lateral side of the femoral condyle posterior fossa.
5. The distal femoral supracondylar fracture fixation device of claim 1, wherein: the inner side surface of the inner locking plate is a third cambered surface which is in fit with the inner side of the femoral condyle, and the inner side surface of the outer locking plate is a fourth cambered surface which is in fit with the outer side of the femoral condyle.
6. The distal femoral supracondylar fracture fixation device of claim 1, wherein: the edge of the first head of the inner locking plate is in a first curvature arc shape, and the edge of the second head of the outer locking plate is in a second curvature arc shape.
7. The distal femoral supracondylar fracture fixation device of claim 1, wherein: the first rod part of the inner locking plate is provided with a plurality of first combining holes which are sequentially arranged along the length direction of the first rod part, and the second rod part of the outer locking plate is provided with a plurality of second combining holes which are sequentially arranged along the length direction of the first rod part.
8. The distal femoral supracondylar fracture fixation device of claim 7, wherein: a plurality of pairs of first arc-shaped notches are arranged on two sides of the length direction of the first rod part of the inner locking plate, and each pair of first arc-shaped notches are positioned between two adjacent first combining holes; and a plurality of pairs of second arc-shaped notches are arranged on two sides of the second rod part of the outer locking plate in the length direction, and each pair of second arc-shaped notches are positioned between two adjacent second combination holes.
9. The distal femoral supracondylar fracture fixation device of claim 1, wherein: a first Kirschner wire hole is formed in the first tail portion of the inner locking plate, and a second Kirschner wire hole is formed in the second tail portion of the outer locking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920704631.XU CN210095888U (en) | 2019-05-17 | 2019-05-17 | Distal femoral supracondylar fracture fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920704631.XU CN210095888U (en) | 2019-05-17 | 2019-05-17 | Distal femoral supracondylar fracture fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210095888U true CN210095888U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920704631.XU Active CN210095888U (en) | 2019-05-17 | 2019-05-17 | Distal femoral supracondylar fracture fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210095888U (en) |
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2019
- 2019-05-17 CN CN201920704631.XU patent/CN210095888U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210826 Address after: 350000 47 shangteng Road, Cangshan District, Fuzhou City, Fujian Province Patentee after: Lin Yanbin Address before: No. 18 Shanbian Hongdong Road, Haicang District, Xiamen City, Fujian Province, 361000 Patentee before: Double Medical Technology Inc. |
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| TR01 | Transfer of patent right |