CN110811805A - Mandible resetting device - Google Patents
Mandible resetting device Download PDFInfo
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- CN110811805A CN110811805A CN201911186660.2A CN201911186660A CN110811805A CN 110811805 A CN110811805 A CN 110811805A CN 201911186660 A CN201911186660 A CN 201911186660A CN 110811805 A CN110811805 A CN 110811805A
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- plate
- minute board
- mandible
- board
- fixed plate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
- A61B17/8071—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones for the jaw
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
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- Medical Informatics (AREA)
- Molecular Biology (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention relates to a mandible resetting device, which comprises a fixed plate, wherein the fixed plate comprises a first branch plate, a second branch plate and a third branch plate, the first branch plate, the second branch plate and the third branch plate are all in a V-shaped structure, screw holes are formed in the first branch plate, the second branch plate and the third branch plate, screw holes are formed in the connecting positions of the first branch plate, the second branch plate and the third branch plate and the bottom of the fixed plate, the first branch plate, the second branch plate and the third branch plate are connected with two sides of a mandible fracture through titanium nails, and fixing components are arranged in the fixed plate, between the screw holes and the side wall of the fixed plate; the mandible reduction device provided by the invention can fix the fracture part in the three-dimensional direction, and is safer and more reliable in treating the mandibular angle fracture.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a mandible reduction device.
Background
The mandible is in a horseshoe shape and consists of a bent mandible and mandible lifting branches at two sides, wherein powerful masticatory muscles are attached to the inner side and the outer side of the lifting branches, the cortex of the mandible is firm, but the center of the mandible is combined, a chin hole area, a mandible angle and a condyle neck are structurally weak areas of the mandible and are good-hair parts of fracture. After the postoperative fracture part is healed, the fixing device is taken out through a secondary operation.
The fixing plates used in the mandibular fracture repair operation at present comprise small-sized plates, micro-sized plates and reconstruction plates, wherein the small-sized plates and the micro-sized plates have fixed shapes with standard sizes such as L-shaped, Y-shaped and Chinese character 'mi' shaped, the reconstruction plates are only standard long-strip-shaped, all the plates are two-dimensional fixing plates, the plates are not ideal in bone surface joint with a patient, fractured bone blocks are difficult to stably repair, absorbable high polymer materials such as poly-L-lactic acid which can be prevented from being taken out for the second time are also applied in the mandibular fracture internal fixation, but compared with a metal system, the bioabsorbable plates have limited strength and are more suitable for fixing small-sized bearing parts and individual slight fractures.
The mandible is the only active big bone of the maxillofacial region and participates in the constitution of temporomandibular joint, so the chewing function is greatly influenced after injury, and a fracture fixing repositor with wide application range and low manufacturing cost is lacked for relevant treatment at present.
Disclosure of Invention
The present invention has been made to solve the problems occurring in the prior art, and an object of the present invention is to provide a mandible reduction apparatus which is safe and reliable.
The purpose of the invention is realized as follows:
the utility model provides a mandible resetting means, includes the fixed plate, the fixed plate includes that first minute board, second divide board and third divide the board, all be "V" type structure between first minute board, second divide board, the third minute board, all set up the screw on first minute board, second divide board and the third divide the board, the screw is seted up to the junction of first minute board, second minute board, third minute board, the bottom of fixed plate, first minute board, second divide board, third minute board pass through the both sides that the mandible fractured of titanium nail connection, establish fixed subassembly between the inside of fixed plate, screw and the lateral wall of fixed plate.
Furthermore, 1-4 screw holes are formed in the first sub-plate, 1-4 screw holes are formed in the second sub-plate, 1-4 screw holes are formed in the third sub-plate, and the diameter of each screw hole is 1-3 mm.
Further, fixed subassembly includes first arc, second arc and spring, the outer wall of screw is connected to first arc, the inner wall of fixed plate is connected to the second arc, pass through spring coupling between first arc and the second arc.
Further, the fixed plate integrated into one piece, establish the titanium nail in the screw, the fixed plate passes through the titanium nail and the screw is connected mandible.
Further, the fixed plate is a thin sheet with the shape matched with the bending form of the mandible of the patient, and the inner side of the fixed plate is coated and attached to the outer surface of the mandible.
Further, the first plate is fixedly connected to a tensile stress area of the mandible, the second plate is fixedly connected to a stress area of the mandible, and the third plate is fixedly connected with an external oblique crest of a mandibular angle area and close to an area with a flat top.
Furthermore, 2-6 fixing components are arranged on the periphery of each screw hole.
Further, the included angle between the first sub-plate and the second sub-plate is 30-120 °, the included angle between the second sub-plate and the third sub-plate is 120-.
Furthermore, the fixing plate is made of a medical titanium plate, and the thickness of the fixing plate is 1-3 mm.
Further, the thickness of the fixing plate is 2 mm.
Further, the tensile strength F1 of the fixing plate is 80-100MPa, the stress F2 of the fixing plate meets 45-120MPa, and F1. F2 is greater than or equal to 3860MPa and less than or equal to 11280 MPa.
Furthermore, the elastic coefficient of the spring is 135-170N/mm, and the diameter of the spring is 0.6-1 mm.
Further, the strain value of the fixing plate satisfies:
wherein rho is density, E is Young modulus, E is more than or equal to 40 and less than or equal to 19561MPa, epsilon is Poisson ratio, and epsilon is more than or equal to 0.2 and less than or equal to 0.5.
Compared with the prior art, the invention has the beneficial effects that:
1. the mandible reduction device provided by the invention can fix the fracture part in the three-dimensional direction so as to overcome shearing, bending and torsion forces in the skeleton, and the larger space design of the mandible reduction device provides conditions for better blood supply of the fracture part.
2. The mandible reduction device provided by the invention has the advantages that the first subplate is fixedly connected to the tensile stress area of the mandible, the second subplate is fixedly connected to the stress area of the mandible, the third subplate is fixedly connected with the external oblique ridge of the mandible angle area and is close to the area with a flat top, and compared with the fixing mode of a single-small template and a double-small template, the stress value of the fixing plate and the strain value of the mandible are reduced.
3. According to the mandible resetting device provided by the invention, the fixing component is arranged on the periphery of the screw hole, so that the screw hole can be prevented from being outwards expanded under the action force of the titanium nail, the fixing plate is prevented from loosening, and the resetting effect is prevented from being influenced.
4. The mandible reduction device provided by the invention is composed of the fixing plates with branches, meets the strength requirements under different occlusion conditions, simultaneously achieves the volume minimization and reduces the operation infection probability.
Drawings
Fig. 1 is a schematic structural view of a mandible reduction device according to the present invention.
Fig. 2 is a top view of a mandibular repositioning device of the invention.
Fig. 3 is a schematic view of a mandible reduction device fixing assembly according to the present invention.
Fig. 4 is a schematic view of the assembly of the reduction device of the present invention to the mandible.
In the figure: 1. a fixing plate; 11. a first sub plate; 12. a second board; 13. a third board dividing; 14. a screw hole; 2. a first arc-shaped plate; 3. a spring; 4. a second arc-shaped plate; 5. titanium nails.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-2, a mandible reduction device comprises a fixing plate 1, wherein the fixing plate 1 is a thin sheet with the shape matched with the bending form of the mandible of a patient, and the inner side of the fixing plate 1 is coated and attached to the outer surface of the mandible.
Fixed plate 1 includes first minute board 11, second minute board 12 and third minute board 13, all be "V" type structure between first minute board 11, second minute board 12, the third minute board 13, all set up screw 14 on first minute board 11, second minute board 12 and the third minute board 13, screw 14 is seted up to the junction of first minute board 11, second minute board 12, third minute board 13, the bottom of fixed plate 1, first minute board 11, second minute board 12, third minute board 13 passes through the both sides of 5 connection mandible fractures of titanium nail.
Example 2
With reference to fig. 4, a mandible resetting device comprises a fixing plate 1, wherein the fixing plate 1 is integrally formed, and the fixing plate 1 is connected with the mandible through a titanium nail 5 and a screw hole 14.
Fixed plate 1 includes first minute board 11, second minute board 12 and third minute board 13, all be "V" type structure between first minute board 11, second minute board 12, the third minute board 13, all set up screw 14 on first minute board 11, second minute board 12 and the third minute board 13, screw 14 is seted up to the junction of first minute board 11, second minute board 12, third minute board 13, the bottom of fixed plate 1, first minute board 11, second minute board 12, third minute board 13 passes through the both sides of 5 connection mandible fractures of titanium nail.
2 screw holes 14 are arranged on the first board 11, 2 screw holes 14 are arranged on the second board 12, 2 screw holes 14 are arranged on the third board 13, and the diameter of each screw hole 14 is 2.2 mm.
The fixed plate 1 is the thin slice that the crooked form of appearance and patient mandible matches, the inboard cladding of fixed plate 1 is laminated in the mandible surface, first subplate 11 fixed connection is in the tensile stress region of mandible, second subplate 12 fixed connection is in the stress region of mandible, third subplate 13 fixed connection mandible angle region's outer oblique ridge and be close to the more flat region in top.
Example 3
The utility model provides a mandible resetting means, includes fixed plate 1, the fixed plate adopts medical titanium plate material, the fixed plate thickness is 2 mm.
Fixed plate 1 includes first minute board 11, second minute board 12 and third minute board 13, all be "V" type structure between first minute board 11, second minute board 12, the third minute board 13, the contained angle between first minute board and the second minute board is 100, the contained angle between second minute board and the third minute board is 130, the contained angle between third minute board and the first minute board is 130.
All set up screw 14 on first minute board 11, second minute board 12 and the third minute board 13, screw 14 is seted up to the junction of first minute board 11, second minute board 12, third minute board 13, the bottom of fixed plate 1, first minute board 11, second minute board 12, third minute board 13 pass through titanium nail 5 and connect the both sides of mandible fracture, establish fixed subassembly between the inside of fixed plate 1, screw 14 and the lateral wall of fixed plate 1.
1-4 screw holes 14 are arranged on the first board 11, 2 screw holes 14 are arranged on the second board 12, 2 screw holes 14 are arranged on the third board 13, and the diameter of each screw hole 14 is 2.2 mm.
Example 4
Combine fig. 3, a mandible resetting means, including fixed plate 1, fixed plate 1 includes first minute board 11, second minute board 12 and third minute board 13, all be "V" type structure between first minute board 11, second minute board 12, the third minute board 13, all set up screw 14 on first minute board 11, second minute board 12 and the third minute board 13, screw 14 is seted up to the junction of first minute board 11, second minute board 12, third minute board 13, the bottom of fixed plate 1, first minute board 11, second minute board 12, third minute board 13 pass through the both sides that the mandible was connected to titanium nail 5, establish fixed subassembly between the inside of fixed plate 1, screw 14 and the lateral wall of fixed plate 1.
Establish fixed subassembly between the inside of fixed plate 1, screw 14 and the lateral wall of fixed plate 1, fixed subassembly includes first arc 2, second arc 4 and spring 3, the outer wall of screw 14 is connected to first arc 2, the inner wall of fixed plate 1 is connected to second arc 4, connect through spring 3 between first arc 2 and the second arc 4.
Example 5
A mandible resetting device comprises a fixing plate 1, wherein the fixing plate 1 is a thin sheet with the shape matched with the bending form of the mandible of a patient, the inner side of the fixing plate 1 is coated and attached on the outer surface of the mandible, the fixing plate 1 is integrally formed, the fixing plate 1 is connected with the mandible through a titanium nail 5 and a screw hole 14,
fixed plate 1 includes first minute board 11, second minute board 12 and third minute board 13, all be "V" type structure between first minute board 11, second minute board 12, the third minute board 13, all set up screw 14 on first minute board 11, second minute board 12 and the third minute board 13, screw 14 is seted up to the junction of first minute board 11, second minute board 12, third minute board 13, the bottom of fixed plate 1, first minute board 11, second minute board 12, third minute board 13 passes through the both sides of 5 connection mandible fractures of titanium nail.
2 screw holes 14 are arranged on the first board 11, 2 screw holes 14 are arranged on the second board 12, 2 screw holes 14 are arranged on the third board 13, and the diameter of each screw hole 14 is 2 mm.
The first plate 11 is fixedly connected to a tensile stress region of the mandible, the second plate 12 is fixedly connected to a stress region of the mandible, and the third plate 13 is fixedly connected to an external oblique crest of a mandibular angle region and is close to a region with a flatter top.
The tensile strength F1 of the fixing plate is 80-100MPa, the stress F2 of the fixing plate meets 45-120MPa, and F1. F2 is greater than or equal to 3860MPa and less than or equal to 11280 MPa.
The elastic coefficient of the spring is 135-170N/mm, and the diameter of the spring is 0.6-1 mm.
The strain value of the fixed plate satisfies:
wherein rho is density, E is Young modulus, E is more than or equal to 40 and less than or equal to 19561MPa, epsilon is Poisson ratio, and epsilon is more than or equal to 0.2 and less than or equal to 0.5.
According to the resetting device provided by the invention, the strain value of the fixed plate is 6-50 mu epsilon.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.
Claims (7)
1. A mandible reduction device, comprising a fixing plate (1), characterized in that: fixed plate (1) includes first minute board (11), second minute board (12) and third minute board (13), all be "V" type structure between first minute board (11), second minute board (12), the third minute board (13), all set up screw (14) on first minute board (11), second minute board (12) and the third minute board (13), screw (14) are seted up to the junction of first minute board (11), second minute board (12), third minute board (13), the bottom of fixed plate (1), first minute board (11), second minute board (12), third minute board (13) pass through titanium nail (5) and connect the both sides of mandible fracture, establish fixed subassembly between the inside of fixed plate (1), screw (14) and the lateral wall of fixed plate (1).
2. A mandibular repositioning device according to claim 1, wherein: 1-4 screw holes (14) are formed in the first sub plate (11), 1-4 screw holes (14) are formed in the second sub plate (12), 1-4 screw holes (14) are formed in the third sub plate (13), and the diameter of each screw hole (14) is 1-3 mm.
3. A mandibular repositioning device according to claim 1, wherein: the fixing assembly comprises a first arc-shaped plate (2), a second arc-shaped plate (4) and a spring (3), the first arc-shaped plate (2) is connected with the outer wall of the screw hole (14), the second arc-shaped plate (4) is connected with the inner wall of the fixing plate (1), and the first arc-shaped plate (2) and the second arc-shaped plate (4) are connected through the spring (3).
4. A mandibular repositioning device according to claim 1, wherein: the fixed plate (1) is integrally formed, and the fixed plate (1) is connected with a mandible through a titanium nail (5) and a screw hole (14).
5. A mandibular repositioning device according to claim 1, wherein: the fixed plate (1) is a thin plate with the shape matched with the bending form of the mandible of a patient, and the inner side of the fixed plate (1) is coated and attached to the outer surface of the mandible.
6. A mandibular repositioning device according to claim 1, wherein: the first subplate (11) is fixedly connected to the tensile stress area of the mandible, the second subplate (12) is fixedly connected to the stress area of the mandible, and the third subplate (13) is fixedly connected to the external cristae of the mandibular angle area and is close to the area with a flatter top.
7. A mandibular repositioning device according to claim 1, wherein: the periphery of each screw hole (14) is provided with 2-6 fixing components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186660.2A CN110811805A (en) | 2019-11-28 | 2019-11-28 | Mandible resetting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186660.2A CN110811805A (en) | 2019-11-28 | 2019-11-28 | Mandible resetting device |
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| Publication Number | Publication Date |
|---|---|
| CN110811805A true CN110811805A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911186660.2A Pending CN110811805A (en) | 2019-11-28 | 2019-11-28 | Mandible resetting device |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694651A (en) * | 2002-11-14 | 2005-11-09 | 赖纳·埃比德 | Osteosynthesis plate set-5 variations of a basic type |
| US20060235408A1 (en) * | 2001-11-09 | 2006-10-19 | Wang Robert C | Apparatus and methods for bone fracture fixation |
| US20060235407A1 (en) * | 2001-11-09 | 2006-10-19 | Wang Robert C | Apparatus and methods for bone fracture reduction and fixation |
| US20070156147A1 (en) * | 2001-11-09 | 2007-07-05 | Robert Wang | Bone fixation device and method |
| CN101152103A (en) * | 2006-09-27 | 2008-04-02 | 德普伊产品公司 | Flexible bone fixation device |
| CN106175903A (en) * | 2016-06-29 | 2016-12-07 | 浙江工业大学 | For repairing the three-dimensional fixed plate manufacture method of fracture mandibular bone and three-dimensional fixed plate |
| CN206729958U (en) * | 2016-12-30 | 2017-12-12 | 广州博敏科技有限公司 | A kind of lower jaw oseoplasty aids in guide plate |
| CN108113742A (en) * | 2018-02-09 | 2018-06-05 | 北京市富乐科技开发有限公司 | Anterior cervical plates |
| CN207634484U (en) * | 2017-11-23 | 2018-07-20 | 江苏瑞春标准件有限公司 | A kind of automatic anti-loosing screw nut of buckle limit |
| CN207949888U (en) * | 2017-09-30 | 2018-10-12 | 浙江工业大学 | Personalized 3D for mandibular angle fractures reparation optimizes structure internal fixation plate |
-
2019
- 2019-11-28 CN CN201911186660.2A patent/CN110811805A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060235408A1 (en) * | 2001-11-09 | 2006-10-19 | Wang Robert C | Apparatus and methods for bone fracture fixation |
| US20060235407A1 (en) * | 2001-11-09 | 2006-10-19 | Wang Robert C | Apparatus and methods for bone fracture reduction and fixation |
| US20070156147A1 (en) * | 2001-11-09 | 2007-07-05 | Robert Wang | Bone fixation device and method |
| CN1694651A (en) * | 2002-11-14 | 2005-11-09 | 赖纳·埃比德 | Osteosynthesis plate set-5 variations of a basic type |
| CN101152103A (en) * | 2006-09-27 | 2008-04-02 | 德普伊产品公司 | Flexible bone fixation device |
| CN106175903A (en) * | 2016-06-29 | 2016-12-07 | 浙江工业大学 | For repairing the three-dimensional fixed plate manufacture method of fracture mandibular bone and three-dimensional fixed plate |
| CN206729958U (en) * | 2016-12-30 | 2017-12-12 | 广州博敏科技有限公司 | A kind of lower jaw oseoplasty aids in guide plate |
| CN207949888U (en) * | 2017-09-30 | 2018-10-12 | 浙江工业大学 | Personalized 3D for mandibular angle fractures reparation optimizes structure internal fixation plate |
| CN207634484U (en) * | 2017-11-23 | 2018-07-20 | 江苏瑞春标准件有限公司 | A kind of automatic anti-loosing screw nut of buckle limit |
| CN108113742A (en) * | 2018-02-09 | 2018-06-05 | 北京市富乐科技开发有限公司 | Anterior cervical plates |
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Application publication date: 20200221 |