CN109820585B - Minimally Invasive Intramedullary Plate System - Google Patents
Minimally Invasive Intramedullary Plate System Download PDFInfo
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- CN109820585B CN109820585B CN201810781994.3A CN201810781994A CN109820585B CN 109820585 B CN109820585 B CN 109820585B CN 201810781994 A CN201810781994 A CN 201810781994A CN 109820585 B CN109820585 B CN 109820585B
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- intramedullary
- extramedullary
- fracture
- minimally invasive
- locking
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- 230000007704 transition Effects 0.000 claims abstract description 17
- 206010017076 Fracture Diseases 0.000 abstract description 46
- 208000010392 Bone Fractures Diseases 0.000 abstract description 39
- 210000000988 bone and bone Anatomy 0.000 abstract description 23
- 230000035876 healing Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 208000014674 injury Diseases 0.000 abstract description 5
- 238000002324 minimally invasive surgery Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 4
- 206010018852 Haematoma Diseases 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 210000002758 humerus Anatomy 0.000 description 4
- 208000015181 infectious disease Diseases 0.000 description 4
- 230000036770 blood supply Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 206010017088 Fracture nonunion Diseases 0.000 description 2
- 206010061213 Iatrogenic injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 230000001054 cortical effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 210000005259 peripheral blood Anatomy 0.000 description 2
- 239000011886 peripheral blood Substances 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 230000008733 trauma Effects 0.000 description 2
- 208000024779 Comminuted Fractures Diseases 0.000 description 1
- 210000001188 articular cartilage Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002745 epiphysis Anatomy 0.000 description 1
- 210000002082 fibula Anatomy 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 210000000623 ulna Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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Abstract
The invention discloses a minimally invasive intramedullary plate system, which comprises an integrally formed intramedullary plate body, wherein the intramedullary plate body consists of an intramedullary part, an extramedullary part and a transition part connecting the intramedullary part and the extramedullary part, the intramedullary part is of a long pipe shape, the extramedullary part is of a shape which is fit with epiphyseal and joint surfaces, a locking nail hole is arranged on a main body of the intramedullary part, and a locking threaded hole is arranged on the main body of the extramedullary part. The invention combines the advantages of an anatomic locking bone plate, an interlocking intramedullary nail and a minimally invasive surgery technique, the intramedullary part of the invention can provide static or dynamic fixation for diaphyseal fracture, basically has no stress shielding effect, and simultaneously selects the surgery mode of closing the nail to avoid exposing broken ends of bones, protect hematoma of fracture parts, reduce injury and improve fracture healing rate; the extramedullary part can provide good supporting function, and simultaneously achieve the aims of recovering the length of the fracture part, correcting the rotation displacement and correcting the force line, so as to ensure the early activity of the patient.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a minimally invasive intramedullary inner plate system.
Background
The primary treatment of fracture aims at resetting, reconstructing stability, and simultaneously preserving blood supply, so that patients and affected limbs can move early. Previous surgical treatments of bone fractures emphasize absolute stability to ensure direct bone healing, and now more emphasize biological, minimally invasive fracture fixation methods. The current common fracture treatment methods mainly comprise bone plate fixation and interlocking intramedullary nail fixation.
Fractures of the joint region are distinct from diaphyseal fractures, which require anatomic reduction and absolute stability to promote healing of the articular cartilage. Thus, fracture treatment involving the joint region is preferably an absolute, strong internal fixation, typically achieved with bone plates. The multi-segment fracture of the metaphyseal and articular surfaces, after reduction, leaves gaps or defects in cancellous and cortical bone. The reduction in contact area after reduction reduces the structural stability of the bone itself, which requires support for the bone plate. For epiphyseal and metaphyseal comminuted fractures, particularly fractures where indirect reduction is not possible using an intramedullary nail, surgical trauma to the reduction may increase the risk of delayed healing and infection of the bone, as well as further disruption of the blood circulation of the fractured mass. In order to obtain a biomechanically stable structure, minimally invasive bone plate techniques may be used to achieve the goals of restoring the length of the fracture site, correcting rotational displacement, and correcting the force lines. However, no matter what the fracture belongs to, the use of the bone fracture plate can inevitably generate stress shielding on bones, so that delayed healing or non-healing of the bones is caused.
The interlocking intramedullary nail is fixed in marrow relative to the locking bone plate, and the fixed axis is close to the central axis of the long bone, so that stress shielding is basically avoided. While the intramedullary nail is fixed, the stress is allowed to conduct down the cortical bone through the fractured end, causing it to have some stress to stimulate fracture healing. In particular for reduction and fixation of fractures in the outer parts of the joint, the initial aim is to recover the axis of the limb for early movements while obtaining a strong fixation, in which case intramedullary nail fixation is more advantageous. From a biological point of view, the healing of the fracture requires a certain stress stimulus. The interlocking intramedullary nail adopts elastic fixation, not only can realize static fixation, but also can realize dynamic fixation, thus ensuring that the fracture end has a small amount of micro-motion to be beneficial to fracture healing when reaching enough stability.
Interlocking intramedullary nails are commonly used with their unique advantages for the treatment of fractures of long bones, but they are not satisfactory for multi-segment fractures of the epiphyseal and articular surfaces.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a minimally invasive intramedullary plate system suitable for fixation of multi-segment fracture combined diaphyseal fracture of epiphyseal and articular surfaces.
In order to solve the problems, the invention adopts the following technical scheme:
a minimally invasive intramedullary plate system comprises an integrally formed intramedullary plate body, wherein the intramedullary plate body is composed of an intramedullary part, an extramedullary part and a transition part for connecting the intramedullary part and the extramedullary part, the intramedullary part is a long tube, the extramedullary part is in a shape of fitting with an epiphyseal end and a joint surface, a locking nail hole is arranged on a main body of the intramedullary part, and a locking threaded hole is arranged on the main body of the extramedullary part.
Further, one end of the transition portion is connected to one end of the intramedullary portion, and the other end of the transition portion is connected to one end of the extramedullary portion or the middle of the extramedullary portion or the other end of the extramedullary portion.
Further, the transition portion is arcuate.
Further, at least two locking nail holes are arranged along the length direction of the long-tube type intramedullary part. The locking threaded holes are formed in a plurality of parts.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
the invention combines the advantages of the anatomic locking bone plate, the interlocking intramedullary nail, the minimally invasive surgery and other technologies, designs the minimally invasive intramedullary plate, and provides a fixation scheme for the multi-section fracture combining diaphyseal fracture of metaphyseal and articular surfaces. The intramedullary part of the invention can provide static or dynamic fixation for diaphyseal fracture, and basically has no stress shielding effect due to the characteristics of intramedullary fixation; meanwhile, the operation mode of closing the through nails can avoid exposing broken ends of bones, protect hematoma of fracture parts, reduce injury and improve fracture healing rate. For multi-segment fractures of metaphyseal and articular surfaces, the extramedullary portion of the present invention provides superior support while achieving the goals of restoring the length of the fracture site, correcting rotational displacement, and correcting the force lines, ensuring early patient movement. The unique design of the invention can perform minimally invasive surgery, thereby reducing iatrogenic injury to fracture ends and fracture blocks. The method can reduce soft tissue stripping in the fracture area and the damage of peripheral blood supply, and is very helpful for reducing complications such as infection, fracture nonunion and the like.
Drawings
FIG. 1 is a schematic view of the structure of an embodiment 1 of the intramedullary plate of the present invention;
FIG. 2 is a schematic view of the structure of embodiment 2 of the intramedullary plate of the present invention;
FIG. 3 is a schematic view of the structure of embodiment 3 of the intramedullary plate of the present invention;
FIG. 4 is a schematic side elevational view of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic diagram of the application structure of embodiment 1 of the present invention;
reference numerals illustrate:
1. an extramedullary part, 2, a locking threaded hole, 3, an excessive part, 4, an intramedullary part, 5 and a locking pin hole.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the minimally invasive intramedullary plate system of the invention is adapted to the multi-segment fracture of metaphyseal and articular surfaces in combination with diaphyseal fractures. The main applicable parts are long bone joint ends, including proximal/distal ulna, proximal/distal radius, proximal/distal humerus, proximal/distal femur, proximal/distal tibia and proximal/distal fibula.
Fig. 1-3 illustrate three embodiments of the present invention, representing three versions of the intramedullary plate of the present invention, the intramedullary plate of the present invention comprises an integrally formed intramedullary plate body formed of an intramedullary portion 4, an extramedullary portion 1, and a transition portion 3 connecting the two portions, the intramedullary portion being of a long tubular shape, the extramedullary portion being of a shape conforming to the epiphyseal and articular surfaces, the transition portion being of an arc shape, a locking pin hole 5 being provided in the main body of the intramedullary portion, and a locking threaded hole 2 being provided in the main body of the extramedullary portion. The three embodiments of the present invention, as shown in fig. 1-3, represent three versions of the intramedullary plate of the present invention, respectively, according to the difference in the junction locations of the transition portion and the extramedullary portion.
As shown in fig. 1 to 4, in order to ensure the fixation of the intramedullary part and the extramedullary part to be stable and reliable, and facilitate the healing of fracture, at least two locking nail holes are provided and are arranged along the length direction of the long tubular intramedullary part, a plurality of locking screw holes are provided, and a proper number of locking screw holes are selected to fix according to the requirement during the fixation.
As shown in the three versions of fig. 1-3, one end of the transition section is connected to one end of the intramedullary section and the other end of the transition section is connected to one end of the extramedullary section or the middle of the extramedullary section or the other end of the extramedullary section. Wherein the minimally invasive intramedullary plate of example 1 is a transition portion connected to the lower end (one end) of the extramedullary portion; the minimally invasive intramedullary plate of example 2 is a transition portion connected to the middle portion of the extramedullary portion; the minimally invasive intramedullary plate of example 3 is connected to the upper end (other end) of the extramedullary portion for the transition portion.
The proximal humerus minimally invasive intramedullary plate (example 1) is described below as an example.
The shape of the intramedullary part accords with the anatomical form of the proximal humerus, and the locking threaded hole can be combined with a locking bone screw to realize reconstruction and fixation of the proximal humerus epiphysis and the joint; the intramedullary part is used for fixation of the humeral shaft and the locking pin holes 5 may be distally interlocked for improved stability, the working principle of which is shown in fig. 5.
The invention combines the advantages of the anatomic locking bone plate, the interlocking intramedullary nail, the minimally invasive surgery and other technologies, and can provide a more perfect solution for the multi-segment fracture combining diaphyseal fracture of metaphysis and joint surface. The intramedullary part of the invention can provide static or dynamic fixation for diaphyseal fracture, and basically has no stress shielding effect due to the characteristics of intramedullary fixation; meanwhile, the operation mode of closing the through nails can avoid exposing broken ends of bones, protect hematoma of fracture parts, reduce injury and improve fracture healing rate. For multi-segment fractures of metaphyseal and articular surfaces, the extramedullary portion of the present invention provides superior support while achieving the goals of restoring the length of the fracture site, correcting rotational displacement, and correcting the force lines, ensuring early patient movement.
It is well known that surgical trauma to incisional reduction can increase the risk of delayed healing and infection of the bone, as well as further disruption of the blood flow of the fractured mass. The unique design of the invention can perform minimally invasive surgery, thereby reducing iatrogenic injury to fracture ends and fracture blocks. The method can reduce soft tissue stripping in the fracture area and the damage of peripheral blood supply, and is very helpful for reducing complications such as infection, fracture nonunion and the like.
Claims (4)
1. A minimally invasive intramedullary plate system, characterized by: the intramedullary plate comprises an integrally formed intramedullary plate body, wherein the intramedullary plate body consists of an intramedullary part, an extramedullary part and a transition part for connecting the intramedullary part and the extramedullary part, the intramedullary part is a long tube, the extramedullary part is in a shape of fitting with an epiphyseal end and a joint surface, a locking nail hole is arranged on a main body of the intramedullary part, and a locking threaded hole is arranged on the main body of the extramedullary part; one end of the transition part is connected with one end of the intramedullary part, and the other end of the transition part is connected with one end of the extramedullary part or the middle of the extramedullary part or the other end of the extramedullary part.
2. The minimally invasive intramedullary plate system of claim 1, wherein: the transition portion is arcuate.
3. The minimally invasive intramedullary plate system of claim 2, wherein: at least two locking pin holes are arranged along the length direction of the inner part of the long tubular marrow.
4. The minimally invasive intramedullary plate system of claim 2, wherein: the locking threaded holes are formed in a plurality of parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810781994.3A CN109820585B (en) | 2018-07-10 | 2018-07-10 | Minimally Invasive Intramedullary Plate System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810781994.3A CN109820585B (en) | 2018-07-10 | 2018-07-10 | Minimally Invasive Intramedullary Plate System |
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| Publication Number | Publication Date |
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| CN109820585A CN109820585A (en) | 2019-05-31 |
| CN109820585B true CN109820585B (en) | 2024-02-13 |
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| CN201810781994.3A Active CN109820585B (en) | 2018-07-10 | 2018-07-10 | Minimally Invasive Intramedullary Plate System |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111973255B (en) * | 2020-06-23 | 2024-05-31 | 杨润松 | Combined marrow needle for fixing femur fracture |
| CN111991067A (en) * | 2020-08-24 | 2020-11-27 | 杨润松 | Internal and external combined fixing device for humerus marrow |
| CN112545628A (en) * | 2020-12-11 | 2021-03-26 | 大博医疗科技股份有限公司 | Proximal humerus fracture fixing device and locking plate thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001286483A (en) * | 2000-04-04 | 2001-10-16 | Masashi Sakamoto | Bone nail with side stop screws for bone fracture at metaphyseal of long trunk bones |
| CN2766796Y (en) * | 2003-09-27 | 2006-03-29 | 冀原 | Internal fixing elastic dynamic cross lock intramedullary nail for bone fracture |
| CN201684009U (en) * | 2010-05-19 | 2010-12-29 | 上海市第六人民医院 | Calcaneus minimally-invasive anatomy locking steel plate |
| CN206167123U (en) * | 2016-07-28 | 2017-05-17 | 北京力达康科技有限公司 | Keep nodal section type that closes matched stack formula thighbone tumour knee joint prosthesis |
| CN209301279U (en) * | 2018-07-10 | 2019-08-27 | 河北瑞鹤医疗器械有限公司 | Minimally invasive marrow inner panel system |
-
2018
- 2018-07-10 CN CN201810781994.3A patent/CN109820585B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001286483A (en) * | 2000-04-04 | 2001-10-16 | Masashi Sakamoto | Bone nail with side stop screws for bone fracture at metaphyseal of long trunk bones |
| CN2766796Y (en) * | 2003-09-27 | 2006-03-29 | 冀原 | Internal fixing elastic dynamic cross lock intramedullary nail for bone fracture |
| CN201684009U (en) * | 2010-05-19 | 2010-12-29 | 上海市第六人民医院 | Calcaneus minimally-invasive anatomy locking steel plate |
| CN206167123U (en) * | 2016-07-28 | 2017-05-17 | 北京力达康科技有限公司 | Keep nodal section type that closes matched stack formula thighbone tumour knee joint prosthesis |
| CN209301279U (en) * | 2018-07-10 | 2019-08-27 | 河北瑞鹤医疗器械有限公司 | Minimally invasive marrow inner panel system |
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| CN109820585A (en) | 2019-05-31 |
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