CN209770519U - Adjustable mandibular bone external fixation device - Google Patents
Adjustable mandibular bone external fixation device Download PDFInfo
- Publication number
- CN209770519U CN209770519U CN201920119926.0U CN201920119926U CN209770519U CN 209770519 U CN209770519 U CN 209770519U CN 201920119926 U CN201920119926 U CN 201920119926U CN 209770519 U CN209770519 U CN 209770519U
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- Prior art keywords
- fixation
- spicule
- fixing
- spicules
- external
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 31
- 210000004373 mandible Anatomy 0.000 claims abstract description 22
- 238000010079 rubber tapping Methods 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 208000010392 Bone Fractures Diseases 0.000 abstract description 21
- 206010017076 Fracture Diseases 0.000 abstract description 16
- 208000006153 Mandibular Fractures Diseases 0.000 abstract description 5
- 208000014674 injury Diseases 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 208000006670 Multiple fractures Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 206010023149 Jaw fracture Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Surgical Instruments (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The utility model relates to an adjustable mandibular bone external fixation device, which comprises a plurality of spicules and a fixing frame; the front end of spicule is equipped with the self tapping screw thread of twist in the mandible, the spicule still is equipped with fixed screw thread, the mount is equipped with spicule fixed orifices, the spicule fixed screw thread passes the mount the spicule fixed orifices, fixed screw thread pass through the nut with mount lock joint, keep the position of spicule on the mandible. The utility model has the advantages that: the fixing frame capable of adjusting the fixing position of the spicules is adopted, the fixing connecting rods can be flexibly combined and connected, the bendable metal fixing plate can adjust the fixing angle of the spicules in a large range, and the fixing requirements of mandibular fracture in various forms and at multiple positions can be met; is particularly suitable for treating the fracture of the mandible caused by sudden accidents or wartime injuries.
Description
Technical Field
The utility model belongs to bone fracture fixing device especially relates to an adjustable lower jaw bone external fixation device.
Background
The bone fixation method comprises internal fixation and external fixation, wherein the internal fixation needs to be performed by incision surgery, and under the condition that the broken end of the fracture is exposed, the internal fixation material is tightly attached to the outer surface of the skeleton or implanted into a marrow cavity to realize fixation, and the internal fixation can generate larger operative trauma to a human body. The external fixation does not need to be performed with an incision operation, under the condition of good restoration, the kirschner wire is drilled into the external fixation frame, the good alignment and contact state of the fracture end is maintained, and a certain external force can be borne. The mandible is shaped like a horseshoe and is relatively flat, and can bear certain stress when being chewed. However, compared with the lower limb skeleton, the lower jaw bone fracture is usually suitable for internal fixation surgery, but the lower jaw bone fractures multiple parts in serious accidents or wartime injuries, the shape of the lower jaw bone cannot be well maintained by adopting the existing internal fixation frame, and the internal fixation cannot meet the fixation of infectious multiple fracture of the lower jaw bone. In this case, the external fixing frame becomes the first choice. However, the existing external fixator cannot well correspond to the shape of the mandible, and is difficult to satisfy the fixation of multiple fracture of the mandible, especially, the median joint section of the mandible is in a bending shape, the existing external fixator cannot well correspond to the shape of the mandible, and is difficult to satisfy the fixation of the median joint fracture of the mandible, and the operation is also very difficult.
Disclosure of Invention
The utility model aims at providing an adjustable mandibular bone external fixation device's technical scheme, the external fixation of mandibular bone fracture is realized more conveniently effectively.
In order to realize the purpose, the technical scheme of the utility model is that: an adjustable mandibular bone external fixation device comprises a plurality of spicules and a fixing frame; the front end of spicule is equipped with the self tapping screw thread of twist in the mandible, the spicule still is equipped with fixed screw thread, the mount is equipped with spicule fixed orifices, the spicule fixed screw thread passes the mount the spicule fixed orifices, fixed screw thread pass through the nut with mount lock joint, keep the position of spicule on the mandible.
Furthermore, in order to adjust the fixed position of the spicule on the fixing plate, the spicule fixing hole comprises a round hole and a long hole, the diameter of the spicule fixing hole is larger than the outer diameter of the fixing thread of the spicule, a spherical washer is arranged between the nut and the fixing frame, and the position of the spicule can be adjusted in the long hole-shaped spicule fixing hole.
Furthermore, in order to maintain good alignment and contact state of the fracture end, a tension ring groove is arranged between the self-tapping thread and the fixing thread of the spicule, and an elastic drawstring or a tension spring is arranged between the adjacent spicules.
Furthermore, the fixing frame comprises a fixing connecting rod, the two ends of the fixing connecting rod are provided with the spicule fixing holes, and the spicule fixing holes at one end or two ends of the fixing connecting rod are long holes.
Furthermore, in order to flexibly perform external fixation on the mandibular fracture, the fixing frame includes one fixing link connecting the two spicules.
Furthermore, in order to enhance the fixation effect on the fracture, the fixing frame comprises three fixing connecting rods forming a triangle and a connecting washer, and the fixing frame is connected with three spicules.
furthermore, the fixed connecting rod comprises four side connecting rods forming a quadrangle and an inclined connecting rod connecting opposite corners of the quadrangle, and the fixed frame is connected with four spicules.
Furthermore, another fixing frame has a structure scheme that the fixing frame is a fixing plate, the fixing plate is provided with a bending arc, and the fixing plate is bent along the bending arc.
Furthermore, the fixing plate is provided with four spicule fixing holes which are long holes, the fixing plate is provided with four mutually perpendicular bending arcs, and the fixing frame is provided with a central hole.
Furthermore, in order to enable the fixing frame to meet the strength required by fixing the spicule and to be manually bent, the fixing plate is an aluminum alloy plate or a stainless steel plate or a titanium alloy plate.
The utility model has the advantages that: the fixing frame capable of adjusting the fixing position of the spicules is adopted, the fixing connecting rods can be flexibly combined and connected, the bendable metal fixing plate can adjust the fixing angle of the spicules in a large range, and the fixing requirements of mandibular fracture in various forms and at multiple positions can be met; the adoption of the spherical washer can ensure that the bone needle keeps a good fixed position for the mandible, the tension ring groove and the elastic drawstring can maintain good alignment and contact states of the fracture broken end, can improve the operating efficiency of external fixation of the mandible, and is particularly suitable for the treatment of the mandible fracture caused by sudden accidents or wartime injuries.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a structural diagram of the present invention, in which the fixing frame is a fixed connecting rod;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a structural diagram of the present invention, in which two ends of the fixed link are provided with long holes;
FIG. 4 is a sectional view of the structure of the present invention;
Fig. 5 is a structural sectional view showing the function of the spherical washer according to the present invention;
FIG. 6 is a schematic view of the present invention using an elastic pull belt;
FIG. 7 is a schematic view of the tension spring of the present invention;
FIG. 8 is a structural diagram of three fixing connecting rods forming a triangle;
FIG. 9 is a structural diagram of four fixed connecting rods forming a quadrilateral according to the present invention;
FIG. 10 is a structural view of the present invention, in which the fixing frame is a fixing plate;
FIG. 11 is an exploded view of the structure of FIG. 10;
FIG. 12 is a schematic view of the fixing plate in a bent state;
FIG. 13 is a structural diagram of the bending fixing plate of the present invention;
FIG. 14 is a schematic view of the present invention using a fixing link to connect two bone pins for external fixation of mandibular fracture;
FIG. 15 is a schematic view of the present invention using two fixing connecting rods to connect three bone pins for external fixation of fracture;
fig. 16 is a schematic view of the present invention using a fixing plate for external fixation of fracture.
Detailed Description
Referring to fig. 1 to 4, an adjustable mandibular external fixation device includes a plurality of spicules 10 and a fixation frame 20; the front end of spicule is equipped with self tapping screw 11 of wrong income mandible, the spicule still is equipped with fixed screw 12, the mount is equipped with spicule fixed orifices (21, 22), the spicule fixed screw passes the mount spicule fixed orifices, fixed screw pass through nut 40 with the mount lock joint, keep the position of spicule on the mandible.
Spicule fixed orifices includes round hole 22 and slot hole 21, the diameter D of spicule fixed orifices is greater than the spicule fixed thread's external diameter D the nut with be equipped with spherical washer 41 between the mount, the spicule can the adjusting position in the spicule fixed orifices of slot hole shape.
The spicules are provided with a tension ring groove 13 between the self-tapping thread and the fixing thread, and an elastic pull belt 51 (shown in fig. 6) or a tension spring 52 (shown in fig. 7) is arranged between the adjacent spicules.
The fixing frame comprises a fixing connecting rod 20, the two ends of the fixing connecting rod are provided with the spicule fixing holes, and the spicule fixing holes at one end (shown in figure 2) or two ends (shown in figure 3) of the fixing connecting rod are long holes 21.
as shown in fig. 1 or fig. 6, the fixing frame includes a fixing connecting rod, and the fixing connecting rod connects the two spicules.
as shown in fig. 8, the fixing frame includes three fixing links forming a triangle, and a connecting washer 23, and the fixing frame is connected to the three spicules.
as shown in fig. 9, the fixed link includes four side links 2A forming a quadrangle and one diagonal link 2B connecting opposite corners of the quadrangle, and the fixed frame is connected with four spicules.
as shown in fig. 10 and 11, the fixing frame is a fixing plate 30, and the fixing plate is provided with a bending arc 32 along which the fixing plate is bent.
the fixing plate is provided with four spicule fixing holes 31 which are long holes, the fixing plate is provided with four mutually perpendicular bending arcs, and the fixing frame is provided with a central opening 33.
the fixing plate is an aluminum alloy plate or a stainless steel plate or a titanium alloy plate.
The first embodiment is as follows:
Referring to fig. 1 to 4, an adjustable mandibular external fixation device for external fixation of a fractured mandible. Comprises a plurality of spicules 10 and a fixing frame 20.
The bone needle of the present embodiment can be regarded as a modified k-wire. The front end of the bone pin is provided with a self-tapping thread 11 screwed into the mandible, the diameter d1=3mm of the self-tapping thread. The spicule is further provided with a length of fixing thread 12, which is an M4 thread, the nominal external diameter of which is d =4 mm. The spicule is provided with a tension ring groove 13 between the self-tapping thread and the fixing thread. The upper end of the spicule is provided with a section of prism 14 for screwing the self-tapping thread of the spicule into the bone.
The fixing frame of the embodiment is a fixing connecting rod 20, two ends of the fixing connecting rod are respectively provided with a spicule fixing hole, the spicule fixing hole comprises a round hole 22 and a long hole 21, and at least one spicule fixing hole is a long hole in order to adjust the fixing outer cover of the spicule. As shown in fig. 2, the spicule fixing hole at one end of the fixing link is a long hole, and the spicule fixing hole at the other end of the fixing link is a round hole. As shown in fig. 3, the spicule fixing holes at both ends of the fixing link are long holes. The spicules can be adjusted in position in the long-hole-shaped spicule fixing holes. The diameter D =5mm of the bone needle fixing hole is larger than the outer diameter D of the fixing thread of the bone needle.
The fixing thread of the spicule passes through the spicule fixing hole of the fixing frame, and the fixing thread is connected with the fixing frame in a locking mode through the nut 40, so that the position of the spicule is fixed, and the position of the spicule on the mandible is kept. In order to allow a larger space for the position adjustment of the spicules and to prevent the fixing plate from generating a radial force on the spicules, a spherical washer 41 is provided between the nut 40 and the end surface of the fixing plate. Because the diameter D of the bone needle fixing hole is larger than the outer diameter D of the fixing thread of the bone needle, the bone needle can be inclined in a certain range relative to the axis of the bone needle fixing hole (as shown in figure 5), so that the fixing plate can adapt to various positions of the bone needle, and the generation of radial force on the bone needle is avoided.
In order to maintain the fracture end in good alignment and contact state, an elastic drawstring 51 (as shown in fig. 6) is arranged between the adjacent spicules, and the elastic drawstring of the embodiment is a ring-shaped rubber band. Tension springs 52 (shown in fig. 7) may also be used to tension between adjacent spicules.
The adjustable mandibular bone external fixation device of this embodiment can flexibly external fix mandibular bone fracture.
Referring to fig. 14, the fixing frame may adopt a fixing link 20 connecting two bone pins to perform external fixation of a mandibular fracture B1. If the mandible has multiple fractures (as shown in the figures B1 and B2), the fracture can be fixed externally by adopting a mode that a plurality of groups of fixing connecting rods are connected with two spicules respectively.
As shown in fig. 15, the method is more flexible, and the fracture external fixation can be carried out by adopting a mode that two fixing connecting rods are connected with three spicules.
as shown in fig. 8, in order to enhance the fixing effect on the fracture, three fixing connecting rods can be adopted as the fixing frame, the fixing frame comprises three fixing connecting rods forming a triangle and a connecting washer 23, and the fixing frame is connected with three spicules.
As shown in fig. 9, in order to further enhance the fixing effect on the fracture, four fixing links may be adopted as the fixing frame, the fixing links include four side links 2A forming a quadrangle, and the fixing frame is connected with four spicules. In order to enhance the stability of the fixing frame, a diagonal connecting rod 2B can be arranged at the opposite corners of the quadrangle.
Example two:
Referring to fig. 10 and 11, an adjustable mandibular external fixation device for external fixation of a fractured mandible. This embodiment is a structural alternative to the first embodiment.
The present embodiment includes a plurality of spicules 10 and a fixture. The mounting bracket is a mounting plate 30.
The fixing plate is made of a metal plate, and can be an aluminum alloy plate with the thickness of 2.5mm or a stainless steel plate or a titanium alloy plate with the thickness of 1 mm.
The fixed plate is shaped into a square. The fixing plate is provided with four bone needle fixing holes 31 which are long holes. To facilitate bending of the fixation plate and to reduce mass, the fixation plate is provided with a central opening 33.
The fixing plate is provided with four bending arcs 32 which are perpendicular to each other.
The fixing frame made of the metal plate has the strength meeting the needs of fixing the spicule and can be manually bent. As shown in fig. 12 and 13, the fixing plate is bent along a bending arc.
The adjustable mandibular external fixation device of this embodiment enables the relative angle of the spicules to be adjusted over a wide range. The fixing mode of the spicules is more flexible and the adaptability is better. Is particularly suitable for external fixation of fracture B3 of the mandible median combined section, as shown in figure 16.
Claims (10)
1. An adjustable mandibular bone external fixation device is characterized in that the device comprises a plurality of spicules and a fixing frame; the front end of spicule is equipped with the self tapping screw thread of twist in the mandible, the spicule still is equipped with fixed screw thread, the mount is equipped with spicule fixed orifices, the spicule fixed screw thread passes the mount the spicule fixed orifices, fixed screw thread pass through the nut with mount lock joint, keep the position of spicule on the mandible.
2. The adjustable mandibular external fixation device of claim 1, wherein the bone pin fixation holes comprise a circular hole and a long hole, the diameter of the bone pin fixation hole is larger than the outer diameter of the fixation thread of the bone pin, a spherical washer is provided between the nut and the fixation frame, and the bone pin is adjustable in position in the long hole shaped bone pin fixation hole.
3. The adjustable mandibular external fixation device of claim 1, wherein said spicules have tension ring grooves between said self-tapping and fixation threads and an elastic tension band or spring is provided between adjacent spicules.
4. The adjustable mandibular external fixation device of claim 1, wherein said fixation frame comprises a fixation link having said bone pin fixation holes at both ends of said fixation link, said bone pin fixation holes at one or both ends of said fixation link being elongated holes.
5. the adjustable mandibular external fixation device of claim 4, wherein said fixation frame includes a fixation linkage connecting two of said spicules.
6. The adjustable mandibular external fixation device of claim 4, wherein said fixation frame comprises three fixation links forming a triangle and a connecting washer, said fixation frame connecting three of said spicules.
7. the adjustable mandibular external fixation device of claim 4, wherein said fixation linkage includes four side links forming a quadrilateral and a diagonal link connecting opposite corners of said quadrilateral, said fixation frame connecting four of said spicules.
8. the adjustable external mandibular fixation device of claim 1, wherein the fixation frame is a fixation plate having an arc of curvature along which the fixation plate is bent.
9. The adjustable mandibular external fixation device of claim 8, wherein said fixation plate is provided with four of said spicule fixation holes, said spicule fixation holes being elongated holes, said fixation plate being provided with four bending arcs perpendicular to each other, said fixation frame being provided with a central opening.
10. The adjustable mandibular external fixation device of claim 8, wherein the fixation plate is an aluminum alloy plate or a stainless steel plate or a titanium alloy plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920119926.0U CN209770519U (en) | 2019-01-24 | 2019-01-24 | Adjustable mandibular bone external fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920119926.0U CN209770519U (en) | 2019-01-24 | 2019-01-24 | Adjustable mandibular bone external fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209770519U true CN209770519U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920119926.0U Expired - Fee Related CN209770519U (en) | 2019-01-24 | 2019-01-24 | Adjustable mandibular bone external fixation device |
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| Country | Link |
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| CN (1) | CN209770519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111743610A (en) * | 2020-06-28 | 2020-10-09 | 北京骨外固定技术研究所 | Medical orthopedic external fixator and single body and unilateral three-dimensional external fixator thereof |
-
2019
- 2019-01-24 CN CN201920119926.0U patent/CN209770519U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111743610A (en) * | 2020-06-28 | 2020-10-09 | 北京骨外固定技术研究所 | Medical orthopedic external fixator and single body and unilateral three-dimensional external fixator thereof |
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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 |
Granted publication date: 20191213 Termination date: 20210124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |