CN106175898B - Posterior spinal fixation device - Google Patents
Posterior spinal fixation device Download PDFInfo
- Publication number
- CN106175898B CN106175898B CN201610560272.6A CN201610560272A CN106175898B CN 106175898 B CN106175898 B CN 106175898B CN 201610560272 A CN201610560272 A CN 201610560272A CN 106175898 B CN106175898 B CN 106175898B
- Authority
- CN
- China
- Prior art keywords
- afterbody
- tail part
- wall
- fixation device
- spinal fixation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7043—Screws or hooks combined with longitudinal elements which do not contact vertebrae with a longitudinal element fixed to one or more transverse elements which connect multiple screws or hooks
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7046—Screws or hooks combined with longitudinal elements which do not contact vertebrae the screws or hooks being mobile in use relative to the longitudinal element
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
Abstract
The invention provides a posterior spinal fixation device, which comprises two parallel rods, a transverse link and a pedicle screw, wherein the transverse link is used for connecting and fixing the rods, the pedicle screw is connected to the rods, the pedicle screw comprises a tail part and a screw part, the tail part is fixed with the rods, the screw part is connected below the tail part, the tail part is hollow, the inner wall of the tail part is provided with an internal thread, the side wall of the tail part is symmetrically provided with grooves for the rods to pass through, the middle of the tail part is provided with an internal nut in threaded connection with the internal thread, the two ends of the transverse link are provided with openings capable of being sleeved into the tail part, the outer wall of the tail part is provided with a butting part, the butting part is positioned between the top end and the bottom end of the tail part to butt against the openings, the outer wall of the upper end of the tail part is provided with external, thereby simplifying the overall structure and realizing the connection of the cross-bar and the rod without other fixing devices.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a posterior spinal fixation device.
Background
At the backbone, including the cervical vertebra, the lumbar vertebrae, extensive region pivot etc., when reseing owing to impaired needs, the reset system can be adopted usually, traditional reset system has included the stick, pedicle of vertebral arch nail and cross-linking, generally the cross-linking passes through fixing device and installs on the stick, it separates each other with pedicle of vertebral arch nail, when this has caused the operation, need fix pedicle of vertebral arch nail and cross-linking on the stick respectively, complex operation, the structure is complicated, and because pedicle of vertebral arch nail belongs to fixed part like the backbone, so receive great effort, and pedicle of vertebral arch nail separates each other with the cross-linking, lead to the restriction that its effort can not be fine, cause the removal on the stick easily, influence the result of use.
Disclosure of Invention
The present invention provides a posterior spinal fixation device that solves the above mentioned problems.
The technical scheme of the invention is realized as follows: a posterior spinal fixation device comprises two parallel rods, a cross-bar connected with the rods and fixed with the rods, and a pedicle screw connected on the rods, wherein the pedicle screw comprises a tail part fixed with the rods and a screw part connected below the tail part, the tail part is hollow, the inner wall of the tail part is provided with an internal thread, the side wall of the tail part is symmetrically provided with a groove for the rods to pass through, an internal nut in threaded connection with the internal thread is arranged in the middle of the tail part, the two ends of the cross-bar are provided with openings capable of being sleeved into the tail part, the outer wall of the tail part is provided with an abutting part, the abutting part is positioned between the top end and the bottom end of the tail part to abut against the openings, the outer wall of the upper end of the tail part is provided with external threads, the outer side of the external threads is sleeved with external nuts through threads, the cross-bar is, the connection of the cross-links to the rods can be achieved without further fixing means.
Further, a notch is formed in the corner edge of the groove from the top to the bottom, and the notch does not reach the lower end of the tail part to form the abutting part.
Further, the abutting part can also be an annular convex groove of the outer wall of the tail part.
Furthermore, the opening is long-strip-shaped, so that the width between the rods can be adjusted within a certain range, and the application range is improved.
Furthermore, the pedicle screw is a long-tail pedicle screw, and a breaking dent is arranged in the middle of the tail part of the long-tail pedicle screw, so that the operation is convenient, and redundant parts can be broken off.
Further, the abutment is located below the dent.
According to the posterior spinal fixation device, the transverse connection is directly installed and fixed on the pedicle screws, so that the rods are fixed, the structure is simplified, the fixation effect is improved, and the mechanical property is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a posterior spinal fixation device in accordance with one embodiment of the present invention;
FIG. 2 is a schematic structural view of the pedicle screw in one embodiment;
fig. 3 is a schematic structural view of another embodiment of the pedicle screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 2 and fig. 3, a posterior spine fixing device, include the horizontal antithetical couplet 2 of the stick 1 of two parallels and connection fixed stick 1, and connect the pedicle screw 3 on the stick 1, pedicle screw 3 includes the afterbody 31 fixed with stick 1 and connects the nail portion 32 in afterbody 31 below, afterbody 31 is hollow, and the inner wall is equipped with the internal thread, afterbody 31 lateral wall symmetry is seted up slottedly, so that let stick 1 pass, be equipped with the interior nut 4 that carries out threaded connection with the internal thread in the middle of afterbody 31, the both ends of horizontal antithetical couplet 2 are equipped with the opening 21 that can overlap into afterbody 31, the outer wall of afterbody 31, be equipped with butt portion 33, butt portion 33 is located between the top of afterbody 31 and the bottom in order to support opening 21, afterbody 31 upper end outer wall.
In one embodiment of the invention, as shown in fig. 2, the corner edges of the slot are provided with a cut from the top down, the cut not reaching the lower end of the tail 31, forming an abutment 33.
In another embodiment of the present invention, as shown in fig. 3, the abutting portion 33 is an annular groove formed in the outer wall of the tail portion.
Further, the opening 21 is elongated.
Further, the pedicle screw 3 is a long-tail pedicle screw, and a break dent 34 is arranged in the middle of the tail part of the long-tail pedicle screw.
Further, the abutment 33 is located below the dent 34.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a way fixing device behind vertebra, includes the stick of two parallels and connects fixedly the cross-under of stick, and connect pedicle of vertebral arch nail on the stick, its characterized in that: the pedicle screw include with the afterbody that the stick is fixed with connect the nail portion of afterbody below, afterbody cavity, and the inner wall is equipped with the internal thread, afterbody lateral wall symmetry is seted up slottedly, so as to let the stick passes, be equipped with in the middle of the afterbody with the internal thread carries out threaded connection's interior nut, the both ends of cross-linking are equipped with and can overlap and establish the opening of afterbody, the outer wall of afterbody is equipped with butt portion, butt portion is located in order to support between the top of afterbody and the bottom the opening, afterbody upper end outer wall is equipped with the external screw thread, the external screw thread outside is equipped with external nut through the screw.
2. The posterior spinal fixation device of claim 1 wherein: the corner edge of the slot is provided with a cut downwards from the top, and the cut does not reach the lower end of the tail part to form the abutting part.
3. The posterior spinal fixation device of claim 1 wherein: the abutting part is an annular convex groove of the outer wall of the tail part.
4. The posterior spinal fixation device of claim 1 wherein: the opening is in a long strip shape.
5. The posterior spinal fixation device of claim 1 wherein: the pedicle screw is a long-tail pedicle screw, and a break dent is arranged in the middle of the tail part of the long-tail pedicle screw.
6. The posterior spinal fixation device of claim 5 wherein: the abutment is located below the dimple.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560272.6A CN106175898B (en) | 2016-07-18 | 2016-07-18 | Posterior spinal fixation device |
| US16/630,479 US20200289165A1 (en) | 2015-12-23 | 2016-12-19 | A screw-rod instrument specially used for posterior atlantoaxial vertebrae fixation |
| PCT/CN2016/110718 WO2017107883A1 (en) | 2015-12-23 | 2016-12-19 | Screw-rod fixation device specially used for posterior atlantoaxial vertebrae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560272.6A CN106175898B (en) | 2016-07-18 | 2016-07-18 | Posterior spinal fixation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106175898A CN106175898A (en) | 2016-12-07 |
| CN106175898B true CN106175898B (en) | 2020-08-07 |
Family
ID=57475279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610560272.6A Active CN106175898B (en) | 2015-12-23 | 2016-07-18 | Posterior spinal fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106175898B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261913A (en) * | 1989-07-26 | 1993-11-16 | J.B.S. Limited Company | Device for straightening, securing, compressing and elongating the spinal column |
| FR2750033B1 (en) * | 1996-06-20 | 1998-09-11 | Euros Sa | DEVICE FOR CROSS-CONNECTION OF RODS OF IMPLANTS |
| US7717939B2 (en) * | 2004-03-31 | 2010-05-18 | Depuy Spine, Inc. | Rod attachment for head to head cross connector |
| US20110218574A1 (en) * | 2010-03-03 | 2011-09-08 | Warsaw Orthopedic, Inc. | Dynamic vertebral construct |
| CN201642292U (en) * | 2010-03-26 | 2010-11-24 | 王春 | Vertebral arch pedicle screw |
| CN202386773U (en) * | 2011-11-08 | 2012-08-22 | 德州金约应医疗器械有限公司 | Press bar nut fixed in vertebral back path |
-
2016
- 2016-07-18 CN CN201610560272.6A patent/CN106175898B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106175898A (en) | 2016-12-07 |
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| C06 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181221 Address after: 510000 No. 111 Liuhua Road, Guangzhou, Guangdong Province Applicant after: General Hospital of the Southern War Zone of the Chinese People's Liberation Army Address before: 510380 No. 1 Xingyu Road, Liwan District, Guangzhou City, Guangdong Province Applicant before: Ma Xiangyang |
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| GR01 | Patent grant |