CN219921191U - Adjustable patella fracture bone fracture plate - Google Patents
Adjustable patella fracture bone fracture plate Download PDFInfo
- Publication number
- CN219921191U CN219921191U CN202321050385.3U CN202321050385U CN219921191U CN 219921191 U CN219921191 U CN 219921191U CN 202321050385 U CN202321050385 U CN 202321050385U CN 219921191 U CN219921191 U CN 219921191U
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- China
- Prior art keywords
- plate
- fixing
- upper plate
- claws
- lower plate
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- 208000010392 Bone Fractures Diseases 0.000 title abstract description 31
- 206010034122 Patella fracture Diseases 0.000 title abstract description 14
- 210000000078 claw Anatomy 0.000 claims abstract description 104
- 206010017076 Fracture Diseases 0.000 claims abstract description 31
- 238000005452 bending Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 241000587161 Gomphocarpus Species 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 210000004417 patella Anatomy 0.000 abstract description 33
- 239000007943 implant Substances 0.000 abstract description 2
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000000426 patellar ligament Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Abstract
The utility model discloses an adjustable patella fracture bone fracture plate, which belongs to the technical field of orthopedic implants and comprises an upper plate and a lower plate positioned below the upper plate, wherein the upper end of the upper plate is provided with at least one fixed claw, the lower end of the lower plate is provided with at least one fixed claw, the tail end of each fixed claw is provided with a screw hole, and a hollow nail, a locking screw or a pressurizing nail are arranged in the screw hole; screw holes on the upper end fixing claws of the upper plate and screw holes on the lower end fixing claws of the corresponding lower plate are on the same axis. The utility model is suitable for complex fracture after patella replacement, is firm in fixation and is simple and convenient to operate.
Description
Technical Field
The utility model relates to the technical field of orthopedic implants, in particular to an adjustable patella fracture bone fracture plate.
Background
With the progress of medical instrument collection, the cost of knee joint replacement is reduced, the operation amount is increased, and the existing patellar fracture solution cannot meet the condition of fracture after knee joint patellar replacement. In the existing operation of patellar fracture after patella replacement, hollow nails, suture anchors, patella plates (matched with locking nails), patella claws, tension bands and the like are generally adopted for fixation. After the patella is replaced, when facing complex fracture, the prior single fixing mode has the problems of unstable fixation, incapability of fixing small bone blocks, influence on joint movement due to too thick steel plates and the like because the original bone quantity of the patella is reduced and the thickness is thinned, and when a plurality of fixing modes are used together, the operation is complex, the operation time is long and the cost is high.
In the prior art, the patella bone fracture plate is various, some of the patella bone fracture plates adopt an integrated structure, such as patent application CN108366803B (patella fracture reduction plate), CN205814408U (patella bone fracture plate) and the like, and some of the patella bone fracture plates adopt a split structure, such as patent application CN104352271a (patella fixer), CN102961177a (patella bone fracture plate) and the like, but the patella bone fracture plates cannot be better suitable for the complex fracture condition after patella replacement, and still have room for improvement.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the adjustable patella fracture bone fracture plate which is suitable for complex fracture after patella replacement, firm in fixation and simple and convenient to operate.
In order to solve the technical problems, the utility model provides the following technical scheme:
an adjustable patellar fracture bone plate comprising an upper plate and a lower plate positioned below the upper plate, wherein:
the upper end of the upper plate is provided with at least one fixed claw, the lower end of the lower plate is provided with at least one fixed claw, the tail end of each fixed claw is provided with a screw hole, and a hollow nail, a locking screw or a pressurizing nail is arranged in the screw hole;
the screw holes on the upper end fixing claws of the upper plate and the corresponding screw holes on the lower end fixing claws of the lower plate are positioned on the same axis.
Further, the middle part of the upper plate is provided with a vertical sliding groove, the middle part of the lower plate and the position corresponding to the sliding groove are provided with locking holes, and the upper plate and the lower plate are also provided with fixing screws which penetrate through the sliding groove and are in threaded connection in the locking holes to fix the upper plate and the lower plate together.
Further, at least two fixing claws are respectively arranged on the left side and the right side of the lower plate, and screw holes are also formed in the tail ends of the fixing claws.
Further, the number of the fixing claws at the upper end of the upper plate and the number of the fixing claws at the lower end of the lower plate are two, the screw holes in the left fixing claw at the upper end of the upper plate and the screw holes in the right fixing claw at the lower end of the lower plate are on the same axis, and the screw holes in the right fixing claw at the upper end of the upper plate and the screw holes in the left fixing claw at the lower end of the lower plate are on the same axis.
Furthermore, the claw tips of the two fixed claws of the upper plate are of a curved cone-shaped structure.
Further, the two fixed claws of the upper plate and the two fixed claws at the lower end of the lower plate are respectively provided with a Ke-shi pinhole.
Further, the number of the Kerr pinholes on the two fixed claws of the upper plate is 1 and the two Kerr pinholes are positioned at the near sides of the screw holes on the fixed claws;
and/or, the number of the Kirschner wire holes on the two fixed claws at the lower end of the lower plate is 2, and the two fixed claws are positioned at the near side and the far side of the screw hole on the fixed claw.
Further, the middle parts of at least two fixed claws on the left side and the right side of the lower plate are respectively provided with a pressurizing locking hole.
Further, bending grooves are formed between screw holes and pressurizing locking holes on the fixing claws on the left side and the right side of the lower plate;
and/or bending grooves are formed in the roots of the fixing claws on the left side and the right side of the lower plate.
Further, the lower surface of the upper plate and the upper surface of the lower plate are provided with mutually matched anti-skid grooves;
and/or the lower surface of the nail head of the fixing screw is in contact with the sliding groove of the upper plate and is an arc-shaped spherical surface.
The utility model has the following beneficial effects:
the adjustable patella fracture bone fracture plate comprises an upper plate and a lower plate, wherein the upper plate and the lower plate are respectively provided with a fixed claw, on one hand, the tail end of each fixed claw is provided with a screw hole, and the screw holes can be matched with hollow nails, locking screws and pressurizing nails for use, so that different operation requirements can be met, and the fixed claws are firmly fixed; on the other hand, the middle part of the upper plate is provided with a vertical sliding groove, the middle part of the lower plate is provided with a locking hole at a position corresponding to the sliding groove, the upper plate and the lower plate are also provided with fixing screws which penetrate through the sliding groove and are in threaded connection in the locking hole to fix the upper plate and the lower plate together, so that the upper plate and the lower plate are of adjustable structures, the upper plate and the lower plate can be pressurized in the operation to reset the fracture, and the adjustable upper plate and the lower plate are applicable to patella with different sizes; on the other hand, the screw hole on the fixed claw at the upper end of the upper plate and the screw hole on the fixed claw at the lower end of the corresponding lower plate are positioned on the same axis, and because the upper plate and the lower plate are of adjustable structures, the fixed claws at the upper end of the upper plate and the lower end of the lower plate do not need to be bent, the corresponding screw holes on the upper plate and the lower plate are positioned on the same axis all the time, so that the screws are convenient to pass through, the patella can be fixed by matching with the tension belt of the screws, and the patella fracture fixing device is particularly suitable for complex fracture (the original bone quantity of the patella is reduced and the thickness is thinned) after the patella replacement. Therefore, the utility model is suitable for complex fracture after patella replacement, and has firm fixation and simple and convenient operation.
Drawings
FIG. 1 is a view of the adjustable patellar fracture bone plate of the present utility model in use;
FIG. 2 is a schematic view of the upper plate of the adjustable patella fracture plate of FIG. 1, wherein (a) is a perspective view in one direction and (b) is a perspective view in another direction;
FIG. 3 is a schematic view of the structure of the middle and lower plates of the adjustable patella fracture plate of FIG. 1, wherein (a) is a perspective view in one direction and (b) is a perspective view in the other direction;
FIG. 4 is a schematic view of the set screw of the adjustable patella fracture bone plate of FIG. 1;
fig. 5 is a schematic structural view of different screws engaged with screw holes in the adjustable patella fracture bone plate of fig. 1, wherein (a) is a structural view of a cannulated nail, (b) is a structural view of a compression nail, and (c) is a structural view of a locking screw.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides an adjustable patellar fracture bone plate, as shown in figures 1-5, comprising an upper plate 1 and a lower plate 2 positioned below the upper plate 1, wherein:
the upper end of the upper plate 1 is provided with at least one fixed claw 11, the lower end of the lower plate 2 is provided with at least one fixed claw 21, the tail ends of the fixed claws 11 and 21 are provided with screw holes 13 and 23, hollow nails, locking screws or pressurizing nails are arranged in the screw holes 13 and 23, and all the nails are of a conventional structure in the field, as shown in figure 5; further, at least two fixing claws 22 can be respectively arranged at the left side and the right side of the lower plate 2, and screw holes 23 are also arranged at the tail ends of the fixing claws 22;
screw holes 13 on the upper end fixing claw 11 of the upper plate 1 and corresponding screw holes 23 on the lower end fixing claw 21 of the lower plate 2 are positioned on the same axis; it can be understood that when the number of the fixing claws 11 at the upper end of the upper plate 1 and the number of the fixing claws 21 at the lower end of the lower plate 2 are 1, the screw holes 13 on the fixing claws 11 and the screw holes 23 on the fixing claws 21 are corresponding, and the two screw holes are on the same axis; however, in order to improve the fixing firmness, the number of fixing claws 11 at the upper end of the upper plate 1 and the number of fixing claws 21 at the lower end of the lower plate 2 are preferably 2, in this case, as shown in fig. 1, the screw hole 13 at the left fixing claw 11 at the upper end of the upper plate 1 and the screw hole 23 at the right fixing claw 21 at the lower end of the lower plate 2 are corresponding, the two screw holes are on the same axis, the screw hole 13 at the right fixing claw 11 at the upper end of the upper plate 1 and the screw hole 23 at the left fixing claw 21 at the lower end of the lower plate 2 are corresponding, and the two screw holes are on the same axis;
the upper plate 1 and the lower plate 2 may be of unitary construction, however, for patella of different sizes, both are preferably of sliding adjustable construction, which may be as follows: the middle part of the upper plate 1 is provided with a vertical sliding groove 14 (which can be in a track shape specifically), the middle part of the lower plate 2 is provided with a locking hole 24 at a position corresponding to the sliding groove 14, and the upper plate 1 and the lower plate 2 are also provided with a fixing screw 3 which passes through the sliding groove 14 and is in threaded connection in the locking hole 24 to fix the upper plate 1 and the lower plate 2 together.
During operation, firstly, anaesthetizing, opening and exposing the fracture position; then resetting the fracture position; then firstly putting the lower plate 2 of the adjustable patellar fracture bone fracture plate of the utility model into the upper plate 1, so that the fixed claw 11 at the upper end of the upper plate 1 hooks the upper pole of the patella 5, and the positions of the upper plate and the lower plate are opposite; adjusting the positions of the upper plate and the lower plate, continuously pressurizing the upper plate and the lower plate, and resetting bones; the fixing screw 3 is screwed into the locking hole 24 in the middle of the lower plate 2 through the sliding groove 14 in the middle of the upper plate 1, and the fixing screw 3 is screwed to fix the upper plate and the lower plate into a whole; if both sides need to be fixed, the two sides are adjusted according to whether the two sides of the fixing claws 22 are attached to bones or not; finally, according to the requirement, the screws are implanted into screw holes 13, 23 of the fixing claws 11, 21, 22 of the upper and lower plates to fix the fracture block.
The adjustable patella fracture bone fracture plate comprises an upper plate and a lower plate, wherein the upper plate and the lower plate are respectively provided with a fixed claw, on one hand, the tail end of each fixed claw is provided with a screw hole, and the screw holes can be matched with hollow nails, locking screws and pressurizing nails for use, so that different operation requirements can be met, and the fixed claws are firmly fixed; on the other hand, the middle part of the upper plate is provided with a vertical sliding groove, the middle part of the lower plate is provided with a locking hole at a position corresponding to the sliding groove, the upper plate and the lower plate are also provided with fixing screws which penetrate through the sliding groove and are in threaded connection in the locking hole to fix the upper plate and the lower plate together, so that the upper plate and the lower plate are of adjustable structures, the upper plate and the lower plate can be pressurized in the operation to reset the fracture, and the adjustable upper plate and the lower plate are applicable to patella with different sizes; on the other hand, the screw hole on the fixed claw at the upper end of the upper plate and the screw hole on the fixed claw at the lower end of the corresponding lower plate are positioned on the same axis, and because the upper plate and the lower plate are of adjustable structures, the fixed claws at the upper end of the upper plate and the lower end of the lower plate do not need to be bent, the corresponding screw holes on the upper plate and the lower plate are positioned on the same axis all the time, so that the screws are convenient to pass through, the patella can be fixed by matching with the tension belt of the screws, and the patella fracture fixing device is particularly suitable for complex fracture (the original bone quantity of the patella is reduced and the thickness is thinned) after the patella replacement. Therefore, the utility model is suitable for complex fracture after patella replacement, and has firm fixation and simple and convenient operation.
As shown in fig. 2, the claw tips 111 of the two fixing claws 11 of the upper plate 1 may have a curved taper structure, and may be used to fix the patella through the patellar ligament to disperse the stress.
As shown in fig. 1-3, two fixing claws 11 of the upper plate 1 and two fixing claws 21 at the lower end of the lower plate 2 may be provided with k-pin holes 15 and 25 for temporary fixation and also for suture fixation of patellar ligament. In specific implementation, for convenience of use, the k-pin holes 15 on the two fixing claws 11 of the upper plate 1 can be 1 and are positioned at the near sides of the screw holes 13 on the fixing claws; the k-wire holes 25 on the two fixing claws 21 at the lower end of the lower plate 2 may be 2 in number and located on the proximal and distal sides of the screw holes 23 on the fixing claws.
As shown in fig. 3, the middle portions of at least two fixing claws 22 on the left and right sides of the lower plate 2 may be provided with pressure locking holes 26 for pressure locking of the ossicle pieces. In practice, the press-locking holes 26 may be 8-shaped holes, and the number of press-locking holes 26 on each of the fixing claws 22 may be 1. Considering the size and the use requirement of the bone plate, in the embodiment shown in the figure, the number of the fixing claws 11 at the upper end of the upper plate 1 and the number of the fixing claws 21 at the lower end of the lower plate 2 are preferably 2.
Further, bending grooves 27 (may be specifically arc grooves) may be formed between the screw holes 23 and the pressing locking holes 26 on the fixing claws 22 on the left and right sides of the lower plate 2 and/or at the root portions of the fixing claws 22 on the left and right sides of the lower plate 2. When the transverse patella is fractured, if the two sides do not need to be fixed, the fixing claws 22 or the reducing holes on the two sides of the lower plate 2 can be broken, and when the transverse patella is matched with a tension belt for use, a steel wire rope can be put into the bending grooves 27 on the fixing claws 22 on the left side and the right side of the lower plate 2 to gather broken bone blocks; when the two sides of the patella are required to be fixed, the fixing claws 22 on the left side and the right side of the lower plate 2 can be bent and adjusted, so that the patella can be better attached to the patella.
As shown in fig. 2-3, the lower surface of the upper plate 1 and the upper surface of the lower plate 2 may be provided with mutually cooperating anti-slip grooves 12, 28 (in particular, a plurality of transverse tooth grooves) to prevent the upper and lower plates from moving after being fixed.
As shown in fig. 1 and 5, the lower surface of the head of the fixing screw 3 is in contact with the sliding groove 14 of the upper plate 1 and the lower surface of the head may be an arc-shaped spherical surface 31 to facilitate the sliding of the fixing screw 3 in the sliding groove 14 of the upper plate 1 and to enhance fixing firmness. In the embodiment shown in the figures, the number of locking holes 24 in the middle of the lower plate 2 and the number of fixing screws 3 are 2; the set screw 3 may be of socket head cap screw design.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. An adjustable patellar fracture bone plate comprising an upper plate and a lower plate positioned below the upper plate, wherein:
the upper end of the upper plate is provided with at least one fixed claw, the lower end of the lower plate is provided with at least one fixed claw, the tail end of each fixed claw is provided with a screw hole, and a hollow nail, a locking screw or a pressurizing nail is arranged in the screw hole;
the screw holes on the upper end fixing claws of the upper plate and the corresponding screw holes on the lower end fixing claws of the lower plate are positioned on the same axis.
2. The adjustable patellar fracture bone plate according to claim 1, wherein a vertical sliding groove is provided in a middle portion of the upper plate, a locking hole is provided in a position corresponding to the sliding groove in a middle portion of the lower plate, and fixing screws penetrating through the sliding groove and screwed into the locking hole are further provided to fix the upper plate and the lower plate together.
3. The adjustable patellar fracture bone plate according to claim 1, wherein the left and right sides of the lower plate are each provided with at least two fixing claws, and the ends of the fixing claws are also provided with screw holes.
4. The adjustable patellar fracture bone plate according to claim 1, wherein the fixing claws at the upper end of the upper plate and the fixing claws at the lower end of the lower plate are both two, the screw hole on the left fixing claw at the upper end of the upper plate and the screw hole on the right fixing claw at the lower end of the lower plate are on the same axis, and the screw hole on the right fixing claw at the upper end of the upper plate and the screw hole on the left fixing claw at the lower end of the lower plate are on the same axis.
5. The adjustable patellar fracture bone plate according to claim 4, wherein the prongs of both fixation claws of the upper plate are each of curved pyramid-like structure.
6. The adjustable patellar fracture bone plate according to claim 4, wherein both the two fixing claws of the upper plate and the two fixing claws of the lower end of the lower plate are provided with k-pin holes.
7. The adjustable patellar fracture bone plate according to claim 6, wherein the number of k-pin holes on both fixation claws of the upper plate is 1 and is located proximal to the screw holes on the fixation claws;
and/or, the number of the Kirschner wire holes on the two fixed claws at the lower end of the lower plate is 2, and the two fixed claws are positioned at the near side and the far side of the screw hole on the fixed claw.
8. The adjustable patellar fracture bone plate according to claim 3, wherein the middle portions of at least two fixing claws on the left and right sides of the lower plate are provided with compression locking holes.
9. The adjustable patellar fracture bone plate according to claim 8, wherein a bending groove is provided between screw holes and compression locking holes on the fixing claws on the left and right sides of the lower plate;
and/or bending grooves are formed in the roots of the fixing claws on the left side and the right side of the lower plate.
10. The adjustable patellar fracture bone plate according to claim 2, wherein the lower surface of the upper plate and the upper surface of the lower plate are provided with mutually-matched anti-skid grooves;
and/or the lower surface of the nail head of the fixing screw is in contact with the sliding groove of the upper plate and is an arc-shaped spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321050385.3U CN219921191U (en) | 2023-05-05 | 2023-05-05 | Adjustable patella fracture bone fracture plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321050385.3U CN219921191U (en) | 2023-05-05 | 2023-05-05 | Adjustable patella fracture bone fracture plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219921191U true CN219921191U (en) | 2023-10-31 |
Family
ID=88488640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321050385.3U Active CN219921191U (en) | 2023-05-05 | 2023-05-05 | Adjustable patella fracture bone fracture plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219921191U (en) |
-
2023
- 2023-05-05 CN CN202321050385.3U patent/CN219921191U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240109 Address after: 100853 Fuxing Road 28, Beijing, Haidian District Patentee after: The first medical center of PLA General Hospital Address before: G356, floor 3, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee before: Ni Ming |