CN114081601A - Lumbar spondylolisthesis reduction isthmus fusion internal fixation device - Google Patents

Lumbar spondylolisthesis reduction isthmus fusion internal fixation device Download PDF

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Publication number
CN114081601A
CN114081601A CN202111397246.3A CN202111397246A CN114081601A CN 114081601 A CN114081601 A CN 114081601A CN 202111397246 A CN202111397246 A CN 202111397246A CN 114081601 A CN114081601 A CN 114081601A
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CN
China
Prior art keywords
sleeve
isthmus
fixation device
internal fixation
supporting
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Pending
Application number
CN202111397246.3A
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Chinese (zh)
Inventor
崔岩
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Individual
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Individual
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Priority to CN202111397246.3A priority Critical patent/CN114081601A/en
Publication of CN114081601A publication Critical patent/CN114081601A/en
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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
    • A61B17/70—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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7014—Longitudinal elements, e.g. rods with means for adjusting the distance between two 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
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • 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
    • 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
    • A61B17/7056—Hooks with specially-designed bone-contacting part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages

Abstract

The invention discloses a lumbar spondylolisthesis reduction isthmus fusion internal fixation device, which comprises a connecting piece, a fastening piece, a supporting piece and an auxiliary fastening piece; the supporting piece comprises a supporting plate, a supporting sleeve and an arc plate; the support sleeve is provided with a connecting column, one end of the support plate is connected with the support sleeve, and the other end of the support plate is connected with the arc plate; the arc plate is provided with a mounting hole, and the outer wall of the arc plate is provided with a locking column; the supporting pieces are connected with the connecting pieces through the connecting columns and symmetrically arranged on the connecting pieces; the connecting column is provided with a locking sleeve; the fastener is arranged in the supporting sleeve; the auxiliary fastener comprises a steering sleeve and a fastening screw, a connecting hole is formed in the outer wall of the steering sleeve, and the steering sleeve is connected with the locking column through the connecting hole and is arranged in the mounting hole; the fastening screw is arranged in the steering sleeve; when the lumbar spondylolisthesis patient is fixed, the angle and the position of the fixing screw are adjusted, so that the device is suitable for different fixing requirements, and the treatment effect is good.

Description

Lumbar spondylolisthesis reduction isthmus fusion internal fixation device
Technical Field
The invention relates to the technical field of medical instruments, in particular to a lumbar spondylolisthesis reduction isthmus fusion internal fixation device.
Background
Lumbar spondylolisthesis is the partial or complete spondylolisthesis caused by abnormal bony connection structure between adjacent vertebral bodies of the spine due to trauma, congenital dysplasia, long-term strain and the like, wherein the lumbar spondylolisthesis accounts for more than 60 percent due to degenerative factors, and the fissures of isthmus are common.
The common lumbar spondylolisthesis treatment methods at present include nerve decompression, spinal fusion, lumbar spondylolisthesis reduction and spinal internal fixation, when the lumbar vertebra is fixed, the angle of the used fixing screw is difficult to change, and the angle is difficult to adapt to the treatment requirement of lumbar spondylolisthesis;
the invention of the device mainly aims at the middle-aged and the teenagers with clinical symptoms and not serious slippage degree at present. The lumbar isthmus is stressed and concentrated greatly, and the mobility in all directions is large, so that the fracture is not easy to heal, the fracture is easy to continue to slide forwards, the symptoms of a patient are gradually aggravated, and even the unrecoverable nerve damage symptoms are caused.
Disclosure of Invention
In order to solve the problems, the invention designs the lumbar spondylolisthesis reduction isthmus fusion internal fixation device, adjusts the angle and the position of a fixing screw when fixing a lumbar spondylolisthesis patient, adapts to different fixing requirements and has good treatment effect.
In order to solve the above technical problems and achieve the above technical effects, the present invention is implemented by the following technical contents:
the lumbar spondylolisthesis reduction isthmus fusion internal fixation device comprises a connecting piece, a fastening piece, a supporting piece and an auxiliary fastening piece;
the supporting piece comprises a supporting plate, a supporting sleeve and an arc plate; the support sleeve is provided with a connecting column, one end of the support plate is connected with the support sleeve, and the other end of the support plate is connected with the arc plate; the arc plate is provided with a mounting hole, and the outer wall of the arc plate is provided with a locking column; the supporting pieces are connected with the connecting pieces through the connecting columns and symmetrically arranged on the connecting pieces; the connecting column is provided with a locking sleeve;
the fastener is arranged in the supporting sleeve; the auxiliary fastener comprises a steering sleeve and a fastening screw, a connecting hole is formed in the outer wall of the steering sleeve, and the steering sleeve is connected with the locking column through the connecting hole and is arranged in the mounting hole; the fastening screw is arranged in the steering sleeve.
Furthermore, a sliding groove is arranged on the connecting piece; the supporting pieces are symmetrically arranged in the sliding grooves.
Furthermore, the end face of the connecting piece is provided with length scales positioned on two sides of the sliding groove.
Furthermore, the fastener includes set screw, and set screw includes first head, the first body of rod, first afterbody, and the both ends of the first body of rod are connected in first head, first afterbody respectively, are equipped with hexagonal groove on the first head, and first head passes and supports the cover and pass through the internal connection of screw thread and spliced pole.
Furthermore, the locking sleeve is connected with the outer wall of the connecting column through threads, and the locking sleeve is positioned on the side face of the connecting piece far away from the supporting sleeve.
Furthermore, the circle center of the arc plate faces to the axis of the fixing screw.
Furthermore, a steering gap is formed between the steering sleeve and the mounting hole; the connecting hole is connected with the locking column through threads, and a hexagonal groove is formed in the end face, far away from the connecting hole, of the locking column.
Furthermore, the fastening screw comprises a second head part, a second rod part and a second tail part, two ends of the second rod part are respectively connected with the second head part and the second tail part, and the second head part is arranged in the steering sleeve through threads.
Furthermore, the edges of the connecting piece, the supporting plate and the arc plate are in smooth transition.
Another object of the present invention is to provide an application of the lumbar spondylolisthesis reduction isthmus fusion internal fixation device in lumbar spondylolisthesis reduction:
when the two fixing screws are respectively placed into vertebral bodies of the lumbar vertebra at two sides of the spinous process, the two supporting plates can respectively hook the lower edges of vertebral plates of the lumbar vertebra at two sides of the spinous process, and the connecting piece can be suspended on the spinous process of the lumbar vertebra through a gap between the spinous process of the lumbar vertebra and the spinous process of the upper lumbar vertebra adjacent to the spinous process of the lumbar vertebra; the position between the two fixing screws can be adjusted by using the sliding groove on the connecting piece, the fixing screws can be more conveniently placed into the vertebral body of a patient according to the condition of the patient, the operation requirement is met, at the moment, the connecting piece, the two fixing screws, the two supporting plates and the two locking sleeves are fixedly connected into a whole, the whole device is good in mechanical stability, stress concentration of lumbar isthmus is avoided, the fixing effect on the lumbar isthmus is good, in addition, the fastening screws are placed into the vertebral body through the mounting holes on the arc plates to fix the fractured lumbar isthmus and the lumbar vertebral body together, and therefore the fixing effect on the lumbar isthmus is further enhanced; the angle of the fastening screw relative to the mounting hole is controlled through the steering sleeve, so that the angle of the fastening screw facing the fixing screw is adjusted, and the connecting effect of the device and the cone is better; this device can reset the centrum of slippage on the basis that does not carry out lumbar vertebrae clearance to fix fusing, fixed effectual to cracked isthmus.
The invention has the beneficial effects that:
the fasteners of the invention are connected together through the connecting piece, the connecting piece is provided with the sliding chute, the space between the fasteners can be adjusted, the fixed position can be conveniently adjusted in the operation, the invention is suitable for different patients, the stability between the fasteners and the lumbar vertebra is improved, the operation difficulty is reduced in the operation process, and the success rate of the operation is improved; when using auxiliary fastener to put into the lumbar vertebrae, can adjust auxiliary fastener's angle, maneuverability is stronger in fixed in-process for whole device's stability is better, fixed effect is better, has avoided appearing the concentrated condition of atress in lumbar vertebrae isthmus department, has convenient, the efficient characteristics of use.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the isthmus fusion internal fixation device for lumbar spondylolisthesis reduction of the present invention;
FIG. 2 is a schematic view of the supporting plate structure of the isthmus fusion internal fixation device for lumbar spondylolisthesis reduction of the present invention;
FIG. 3 is an enlarged structural view of an arc plate of the isthmus fusion internal fixation device for lumbar spondylolisthesis reduction of the present invention;
FIG. 4 is a schematic view of the auxiliary fastener structure of the isthmus fusion internal fixation device for lumbar spondylolisthesis reduction of the present invention;
FIG. 5 is a schematic structural view of a fastening screw of the isthmus fusion internal fixation device for lumbar spondylolisthesis reduction of the invention
In the drawings, the components represented by the respective reference numerals are listed below:
1-connecting piece, 101-sliding groove, 2-fastening piece, 201-first head, 202-first rod body, 203-first tail, 3-supporting sleeve, 4-supporting plate, 5-arc plate, 6-steering sleeve, 7-fastening screw, 701-second head, 702-second rod piece, 703-second tail, 8-locking column, 9-connecting column, 10-locking sleeve, 11-hexagonal groove, 12-mounting hole and 13-connecting hole.
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.
For a more clear description of the invention, the following description is made with reference to specific embodiments:
example 1
Referring to fig. 1-5, the spondylolisthesis reduction isthmus fusion internal fixation device comprises a connecting piece 1, a fastener 2, a supporting piece and an auxiliary fastener;
the supporting piece comprises a supporting plate 4, a supporting sleeve 3 and an arc plate 5; a connecting column 9 is arranged on the support sleeve 3, one end of the support plate 4 is connected with the support sleeve 3, and the other end is connected with the arc plate 5; the arc plate 5 is provided with a mounting hole 12, and the outer wall of the arc plate 5 is provided with a locking column 8; the supporting pieces are connected with the connecting piece 1 through the connecting column 9 and symmetrically arranged on the connecting piece 1; the connecting column 9 is provided with a locking sleeve 10;
the fastener 2 is arranged in the support sleeve 3; the auxiliary fastening piece comprises a steering sleeve 6 and a fastening screw 7, a connecting hole 13 is formed in the outer wall of the steering sleeve 6, and the steering sleeve 6 is connected with the locking column 8 through the connecting hole 13 and is arranged in the mounting hole 12; the fastening screw 7 is arranged in the steering sleeve 6; the locking column 8 can be loosened to rotate the steering sleeve 6 so as to adjust the angle of the fastening screw 7 relative to the mounting hole 12, and after the angle is adjusted, the locking column 8 is used for connecting and fixing the position of the fastening screw in the connecting hole 13.
Example 2
A chute 101 is arranged on the connecting piece 1; the support members are symmetrically disposed within the chute 101.
Example 3
The end face of the connecting piece 1 is provided with length scales positioned on two sides of the sliding groove 101.
Example 4
Fastener 2 includes set screw, and set screw includes first head 201, the first body of rod 202, first afterbody 203, and the both ends of the first body of rod 202 are connected in first head 201, first afterbody 203 respectively, are equipped with hexagonal groove 11 on the first head 201, and first head 201 passes and supports cover 3 and through the internal connection of screw thread with spliced pole 9.
Example 5
The locking sleeve 10 is connected with the outer wall of the connecting column 9 through threads, and the locking sleeve 10 is positioned on the side surface of the connecting piece 1 far away from the support sleeve 3.
Example 6
The circle center of the arc plate 5 faces to the axis of the fixing screw.
Example 7
A steering gap is arranged between the steering sleeve 6 and the mounting hole 12; the connecting hole 13 is connected with the locking column 8 through threads, and a hexagonal groove 11 is formed in the end face, far away from the connecting hole 13, of the locking column 8.
Example 8
The fastening screw 7 includes a second head 701, a second rod 702, and a second tail 703, two ends of the second rod 702 are respectively connected to the second head 701 and the second tail 703, and the second head 701 is disposed in the steering sleeve 6 through a thread.
Example 9
The edges of the connecting piece 1, the supporting plate 4 and the arc plate 5 are in smooth transition.
The invention discloses an application of a lumbar spondylolisthesis reduction isthmus fusion internal fixation device in lumbar spondylolisthesis reduction:
when the two fixing screws are respectively placed into vertebral bodies of the lumbar vertebra at two sides of the spinous process, the two supporting plates can respectively hook the lower edges of vertebral plates of the lumbar vertebra at two sides of the spinous process, and the connecting piece can be suspended on the spinous process of the lumbar vertebra through a gap between the spinous process of the lumbar vertebra and the spinous process of the upper lumbar vertebra adjacent to the spinous process of the lumbar vertebra; the position between the two fixing screws can be adjusted by using the sliding groove on the connecting piece, the fixing screws can be more conveniently placed into the vertebral body of a patient according to the condition of the patient, the operation requirement is met, at the moment, the connecting piece, the two fixing screws, the two supporting plates and the two locking sleeves are fixedly connected into a whole, the whole device is good in mechanical stability, stress concentration of the lumbar isthmus is avoided, the fixing effect on the lumbar isthmus is good, in addition, the fastening screws are placed into the vertebral body through the mounting holes in the arc plates to fix the fractured lumbar isthmus and the lumbar vertebral body together, and therefore the fixing effect on the lumbar isthmus is further enhanced; the angle of the fastening screw relative to the mounting hole is controlled through the steering sleeve, so that the angle of the fastening screw facing the fixing screw is adjusted, and the connecting effect of the device and the cone is better; this device can restore to the throne to the centrum of slippage on the basis that does not carry out lumbar vertebrae clearance and fuse to the fracture isthmus is fixed and is fused, and is fixed effectual.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. Lumbar spondylolisthesis reduction isthmus fuses internal fixation device, its characterized in that: comprises a connecting piece, a fastening piece, a supporting piece and an auxiliary fastening piece;
the supporting piece comprises a supporting plate, a supporting sleeve and an arc plate; the support sleeve is provided with a connecting column, one end of the support plate is connected with the support sleeve, and the other end of the support plate is connected with the arc plate; the arc plate is provided with a mounting hole, and the outer wall of the arc plate is provided with a locking column; the supporting pieces are connected with the connecting pieces through the connecting columns and symmetrically arranged on the connecting pieces; the connecting column is provided with a locking sleeve;
the fastener is arranged in the supporting sleeve; the auxiliary fastener comprises a steering sleeve and a fastening screw, a connecting hole is formed in the outer wall of the steering sleeve, and the steering sleeve is connected with the locking column through the connecting hole and is arranged in the mounting hole; the fastening screw is arranged in the steering sleeve.
2. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 1, wherein: the connecting piece is provided with a sliding chute; the supporting pieces are symmetrically arranged in the sliding grooves.
3. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 2, wherein: the end face of the connecting piece is provided with length scales positioned on two sides of the sliding groove.
4. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 1, wherein: the fastener includes set screw, and set screw includes first head, the first body of rod, first afterbody, and the both ends of the first body of rod are connected in first head, first afterbody respectively, are equipped with hexagonal recess on the first head, and first head passes and supports the cover and pass through the internal connection of screw thread and spliced pole.
5. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 1, wherein: the lock sleeve is connected with the outer wall of the connecting column through threads, and the lock sleeve is positioned on the side face of the connecting piece far away from the support sleeve.
6. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 3, wherein: the center of the arc plate faces to the axis of the fixing screw.
7. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 1, wherein: a steering clearance is arranged between the steering sleeve and the mounting hole; the connecting hole is connected with the locking column through threads, and a hexagonal groove is formed in the end face, far away from the connecting hole, of the locking column.
8. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 5, wherein: the fastening screw comprises a second head part, a second rod part and a second tail part, two ends of the second rod part are respectively connected with the second head part and the second tail part, and the second head part is arranged in the steering sleeve through threads.
9. The spondylolisthesis reduction isthmus fusion internal fixation device of claim 1, characterized in that: the edges of the connecting piece, the supporting plate and the arc plate are in smooth transition.
10. The use of the spondylolisthesis reduction isthmus fusion internal fixation device of any one of claims 1-9 in spondylolisthesis reduction.
CN202111397246.3A 2021-11-23 2021-11-23 Lumbar spondylolisthesis reduction isthmus fusion internal fixation device Pending CN114081601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111397246.3A CN114081601A (en) 2021-11-23 2021-11-23 Lumbar spondylolisthesis reduction isthmus fusion internal fixation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111397246.3A CN114081601A (en) 2021-11-23 2021-11-23 Lumbar spondylolisthesis reduction isthmus fusion internal fixation device

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CN114081601A true CN114081601A (en) 2022-02-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5129900A (en) * 1990-07-24 1992-07-14 Acromed Corporation Spinal column retaining method and apparatus
CN1113744A (en) * 1994-05-09 1995-12-27 苏发莫丹内克集团有限公司 Apparatus and method for spinal fixation and correction of spinal deformities
US5591165A (en) * 1992-11-09 1997-01-07 Sofamor, S.N.C. Apparatus and method for spinal fixation and correction of spinal deformities
CN102499745A (en) * 2011-11-07 2012-06-20 南方医科大学 Improved spinal dynamic internal fixation device
CN112315569A (en) * 2020-11-12 2021-02-05 上海三友医疗器械股份有限公司 Internal fixation structure of spine and internal fixation system thereof
CN113180808A (en) * 2021-04-30 2021-07-30 新疆医科大学第一附属医院 Lumbar spondylolisthesis reduction isthmus fusion internal fixation device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5129900A (en) * 1990-07-24 1992-07-14 Acromed Corporation Spinal column retaining method and apparatus
US5129900B1 (en) * 1990-07-24 1998-12-29 Acromed Corp Spinal column retaining method and apparatus
US5591165A (en) * 1992-11-09 1997-01-07 Sofamor, S.N.C. Apparatus and method for spinal fixation and correction of spinal deformities
CN1113744A (en) * 1994-05-09 1995-12-27 苏发莫丹内克集团有限公司 Apparatus and method for spinal fixation and correction of spinal deformities
CN102499745A (en) * 2011-11-07 2012-06-20 南方医科大学 Improved spinal dynamic internal fixation device
CN112315569A (en) * 2020-11-12 2021-02-05 上海三友医疗器械股份有限公司 Internal fixation structure of spine and internal fixation system thereof
CN113180808A (en) * 2021-04-30 2021-07-30 新疆医科大学第一附属医院 Lumbar spondylolisthesis reduction isthmus fusion internal fixation device

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