CN214966274U - A fill fixed knot and construct for high-order osteotomy of shin bone - Google Patents
A fill fixed knot and construct for high-order osteotomy of shin bone Download PDFInfo
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- CN214966274U CN214966274U CN202120852070.5U CN202120852070U CN214966274U CN 214966274 U CN214966274 U CN 214966274U CN 202120852070 U CN202120852070 U CN 202120852070U CN 214966274 U CN214966274 U CN 214966274U
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- China
- Prior art keywords
- fixing plate
- wedge
- filling block
- osteotomy
- flexible fixing
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 33
- 238000010146 3D printing Methods 0.000 claims abstract description 7
- 230000001154 acute effect Effects 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 15
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 230000035876 healing Effects 0.000 description 7
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 4
- 230000008468 bone growth Effects 0.000 description 4
- 230000012010 growth Effects 0.000 description 4
- 210000000629 knee joint Anatomy 0.000 description 4
- 239000007943 implant Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004938 stress stimulation Effects 0.000 description 1
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- Prostheses (AREA)
Abstract
A filling and fixing structure for high tibial osteotomy comprises a flexible fixing plate and a wedge-shaped filling block; the wedge-shaped filling block is arranged at the gap of the osteotomy position, the flexible fixing plate is coated on the wedge-shaped filling block and the outer side of the osteotomy, and the flexible fixing plate is completely attached to the tibia; the flexible fixing plate is fixedly connected with the wedge-shaped filling block. The utility model discloses flexible fixing plate is "S" type design, has both played the fixed stay effect, can compare traditional fixed plate again and have great deformation, plays buffering shin bone load and reduces the influence of fixed plate stress shielding. The flexible fixing plate is designed according to the tibia skeleton geometric morphology of an individual patient, and is manufactured by 3D printing, so that the function of completely fitting the tibia surface can be achieved, and the condition that a traditional fixing plate and a bone are not fitted before can not occur.
Description
Technical Field
The utility model belongs to the technical field of cut the filling structure of bone, in particular to a fill fixed knot and construct for high-order bone of cutting of shin bone.
Background
The mechanism of the tibia high-position osteotomy is mainly characterized in that a wedge-shaped incision is made on the tibia high-position osteotomy, the vertical included angle of the incision is adjusted to correct the lower limb force line, and the load of the inner compartment of the knee joint is reduced, so that the effect of relieving and treating the osteoarthritis is achieved, the structure of the original knee joint is reserved, and the problems of artificial joint replacement and the like are avoided. Various fixation plates and fillers are used in clinical procedures to fix the upper and lower tibial components of the wedge-shaped incision adjusted by the surgeon. However, at present, the fixing plate for the high tibial osteotomy in clinical use cannot be geometrically well attached to the bone surface of a patient due to structural design, a doctor is required to bend and adjust the fixing plate in an operation, the operation is labor-consuming and time-consuming, the effect after adjustment is not satisfactory, complications such as fracture of the fixing plate, fracture of a tibial cut or non-healing often occur in clinical use, and the fixing effect is not good. Moreover, most of the operation cases do not consider the filling block, the clinical filling block introduced at present does not take the comprehensive treatment effect of the fixing plate and the filling block into consideration, and the filling block does not consider the incision shape difference of individual patients, so that the satisfactory postoperative effect can not be achieved frequently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fill fixed knot structure for high-order osteotomy of shin bone to solve above-mentioned problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a filling and fixing structure for high tibial osteotomy comprises a flexible fixing plate and a wedge-shaped filling block; the wedge-shaped filling block is arranged at the gap of the osteotomy position, the flexible fixing plate is coated on the wedge-shaped filling block and the outer side of the osteotomy, and the flexible fixing plate is completely attached to the tibia; the flexible fixing plate is fixedly connected with the wedge-shaped filling block.
Furthermore, the flexible fixing plate is of an S-shaped structure.
Furthermore, both ends and the central point of flexible fixed plate put and all are provided with the screw hole, and the both ends of flexible fixed plate are passed through the bolt fastening on the shin bone, and the center of flexible fixed plate is passed through the bolt fastening on wedge filling block.
Further, the wedge-shaped filling block is of a porous structure.
Furthermore, the front side wedge-shaped area of the filling block adopts a structural design with low porosity, and the rear side hinge area of the filling block adopts a structural design with 75% high porosity.
Furthermore, when the flexible fixing plate is fixed by the screws, the screws are in a crossed relation in space.
Furthermore, the number of the threaded holes at the two ends of the flexible fixing plate is two, and the number of the threaded holes at the central position is one.
Further, the wedge-shaped filling block is a porous structure formed by 3D printing; the flexible fixing plate is of an S-shaped structure formed by 3D printing; the wedge-shaped filling block is a structure with one thin end and one thick end, and the acute angles of the two tail ends of the osteotomy part are completely filled without using the wedge-shaped filling block.
Compared with the prior art, the utility model discloses there is following technological effect:
the utility model discloses flexible fixing plate is "S" type design, has both played the fixed stay effect, can compare traditional fixed plate again and have great deformation, plays buffering shin bone load and reduces the influence of fixed plate stress shielding. .
The flexible fixing plate is designed according to the tibia skeleton geometric morphology of an individual patient, and is manufactured by 3D printing, so that the function of completely fitting the tibia surface can be achieved, and the condition that a traditional fixing plate and a bone are not fitted before can not occur.
When the flexible fixing plate is fixed by the screws, the screws are in a crossed relation rather than a parallel relation in space, and the purpose of better fixing the flexible fixing plate can be achieved.
Wedge filling block designs according to the breach that the shin bone of individuation patient cut the bone position, and the combination shape of wedge filling block matches with the shape at osteotomy interface to the adoption is favorable to the porous structure that the bone grows into, prints through 3D and makes the use, plays the effect of packing and load, can assist the fixed effect of reinforcing flexible fixation board, promotes osteotomy interface bone growth into, bone healing.
The flexible fixing plate and the wedge-shaped filling block are connected through screws, so that the whole structure has better stability, and meanwhile, the small deformation of the flexible fixing plate during loading is beneficial to obtaining the micro-motion of a wedge-shaped block interface, and the growth of an osteotomy is stimulated.
Drawings
Fig. 1 is a schematic view of the filling and fixing structure for high tibial osteotomy of the present invention.
Fig. 2 is a schematic view of the wedge-shaped filling block in the filling and fixing structure for high tibial osteotomy of the present invention.
Fig. 3 is a schematic structural view of a flexible fixing plate in a filling and fixing structure for high tibial osteotomy of the present invention.
Fig. 4 is a schematic structural view of the relative position between the wedge-shaped filling block and the osteotomy part in the filling and fixing structure for the high tibial osteotomy of the present invention.
1. Screws 1, 2, 3,4, 5,6, wedge-shaped filling block, and 7, flexible fixing plate.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 to 4, an individualized filling fixation implant for high tibial osteotomy has a flexible fixation plate with an "S" shape design, which increases the flexible deformation of the fixation plate when the tibia is stressed. The flexible fixing plate is connected with the wedge-shaped filling block through the fixing screw, the filling block can be driven to slightly slide when the fixing plate is flexibly deformed, and a good stimulation effect is achieved on the healing of the osteotomy part. .
The S-shaped flexible fixing plate is designed according to the geometry of the tibia bone of an individual patient, the modeling, 3D printing and other technologies are adopted for each patient, the flexible fixing plate is completely attached to the outer surface of the tibia, and the fixing failure and the fixing plate fracture risk are reduced. .
The wedge-shaped filling block is also designed according to the gap of the tibia osteotomy position of the individual patient, the combination shape of the wedge-shaped filling block is matched with the shape of the osteotomy interface, and the effects of filling the gap and bearing load of the filling block are increased. The wedge-shaped filling has a porous structure printed in 3D, so that the bone ingrowth is facilitated, and the tibia osteotomy fixing effect is improved.
The S-shaped flexible fixing plate is provided with a plurality of screw holes, the S-shaped flexible fixing plate and the tibia are fixed by four screws at the upper and lower adjacent areas of the osteotomy position, and the screws are connected with the tibia to fix the fixing plate.
The wedge-shaped filling block adopts porous structure design with different porosities in different functional areas, the threaded hole for connecting the filling block with the fixing plate and the wall thickness of the threaded hole with the wall thickness of 2mm adopt the structural design with low porosity, and the rest filling block parts adopt the structural design with high porosity of 75%.
All the screws are driven in perpendicular to the surface of the flexible board, and the surface of the flexible board is an irregular curved surface, so that the screws 1 and the screws 2 are driven in a crossed relationship instead of a parallel relationship in space, and the effect of fixing the flexible board is better achieved. Similarly, the screws 4 and 5 are also driven perpendicular to the surface of the flexible board.
The wedge-shaped filling block is made of loose and porous materials with certain strength, the loose and porous materials can enable bones to have an attaching effect in the growth process, and finally the whole gap is filled, so that the later-stage bone growth of patients is promoted, and a better healing effect is brought.
At the acute angle of the two ends of the osteotomy part, the complete filling at the smaller angle can cause the fracture risk of the area, so the bone should grow and fill naturally, and the wedge-shaped filling block should not be used for complete filling, so that the whole structure better conforms to the rule of natural growth, and the healing effect is better.
The utility model relates to a fill fixed knot and construct for high-order osteotomy of shin bone, as shown in fig. 1, including flexible fixed plate 7, wedge filling block 6, screw 1, screw 2, screw 3, screw 4 and screw 5, be provided with five round holes on the flexible fixed plate 7, screw 1 squeezes into its round hole that corresponds, and screw 2 squeezes into its round hole that corresponds, and screw 4 squeezes into its round hole that corresponds, and screw 5 squeezes into its round hole that corresponds.
The wedge-shaped filling block is placed at a wedge-shaped cut part formed by the high tibial osteotomy.
The flexible fixing plate is connected with the wedge-shaped filling block by a screw 3.
The wedge-shaped filling blocks are formed by a density structure and form a porous grid shape.
The utility model relates to a fixed implant is filled to individuation for high-order osteotomy of shin bone, its concrete theory of operation is:
design and 3D according to individual family patient and print the individualized fixed implant of filling of corresponding high-order osteotomy of shin bone, wedge filling block 6 is put into the wedge incision after the osteotomy in the art to place flexible fixation board 7 on corresponding shin bone surface, be connected flexible sheet and wedge filling block through screw 3, squeeze into corresponding round hole in proper order through screw 1, screw 2, screw 4 and screw 5 and be connected with the shin bone.
Under the knee joint load condition, the wedge filling block plays a role in filling and supporting, so that the load bearing capacity of the postoperative tibia of a patient is greatly increased, and the requirement of daily life is met. Meanwhile, the porous structure design of the filling block is beneficial to the growth of bones, so that the upper surface and the lower surface of the wedge-shaped filling block can better achieve the purpose of fusion with the bones, the long-term stability of the tibia after high osteotomy is improved, and the healing effect is better promoted.
Under the knee joint load condition, S type flexible fixed plate and wedge filling block pass through the screw connection for overall structure has better stability, and the little deformation of flexible fixed plate when the load is favorable to obtaining the fine motion at wedge block interface, the amazing osteotomy bone growth.
The problem of current fixed plate and filling block can not match with individuation patient shin bone is solved, the fixed plate adopts "S" type flexible design and filling block to cooperate the use simultaneously, has reduced the stress shielding effect of fixed plate to the bone, makes the bone receive reasonable stress stimulation and promotes the bone growth of cutting the bone position, has increased the small sliding in interface of filling block, has played better stimulation to the healing of cutting the bone position.
Claims (8)
1. A filling and fixing structure for high tibial osteotomy, characterized by comprising a flexible fixing plate (7) and a wedge-shaped filling block (6); the wedge-shaped filling block (6) is arranged at the gap of the osteotomy position, the flexible fixing plate (7) is coated on the wedge-shaped filling block (6) and the outer side of the osteotomy, and the flexible fixing plate (7) is completely attached to the tibia; the flexible fixing plate (7) is fixedly connected with the wedge-shaped filling block (6).
2. Filling and fixing structure for high tibial osteotomies, according to claim 1, characterized in that the flexible fixing plate (7) is of S-shaped configuration.
3. The filling and fixing structure for the high tibial osteotomy according to claim 1, wherein both ends and the central position of the flexible fixing plate (7) are provided with threaded holes, both ends of the flexible fixing plate (7) are fixed on the tibia through bolts, and the center of the flexible fixing plate (7) is fixed on the wedge-shaped filling block (6) through bolts.
4. Filling and fixing structure for high tibial osteotomies, according to claim 1, characterised in that the wedge-shaped filling block (6) is of porous structure.
5. The filling fixture of claim 4, wherein the anterior wedge region of the filling block is of a low porosity design and the posterior hinge region of the filling block is of a high porosity design of 75%.
6. The filling fixture structure for a high tibial osteotomy of claim 1, wherein the screws are in a spatially crossing relationship when the flexible fixation plate is secured with the screws.
7. The filling and fixing structure for the high tibial osteotomy according to claim 3, wherein the number of the threaded holes at the two ends of the flexible fixing plate (7) is two, and the number of the threaded holes at the central position is one.
8. Filling fixture for high tibial osteotomies, according to claim 1, characterised in that the wedge-shaped filling block (6) is a porous structure formed by 3D printing; the flexible fixing plate (7) is of an S-shaped structure formed by 3D printing; the wedge-shaped filling block (6) is a structure with a thin end and a thick end, and is not completely filled at the acute angles of the two tail ends of the osteotomy part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120852070.5U CN214966274U (en) | 2021-04-23 | 2021-04-23 | A fill fixed knot and construct for high-order osteotomy of shin bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120852070.5U CN214966274U (en) | 2021-04-23 | 2021-04-23 | A fill fixed knot and construct for high-order osteotomy of shin bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214966274U true CN214966274U (en) | 2021-12-03 |
Family
ID=79091137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120852070.5U Expired - Fee Related CN214966274U (en) | 2021-04-23 | 2021-04-23 | A fill fixed knot and construct for high-order osteotomy of shin bone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214966274U (en) |
-
2021
- 2021-04-23 CN CN202120852070.5U patent/CN214966274U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211203 |