CN105816229A - Adjustable spinal internal fixator - Google Patents
Adjustable spinal internal fixator Download PDFInfo
- Publication number
- CN105816229A CN105816229A CN201610301566.7A CN201610301566A CN105816229A CN 105816229 A CN105816229 A CN 105816229A CN 201610301566 A CN201610301566 A CN 201610301566A CN 105816229 A CN105816229 A CN 105816229A
- Authority
- CN
- China
- Prior art keywords
- ailhead
- rivet nut
- section
- support column
- rotary
- 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.)
- Pending
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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
- A61B17/7035—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
- A61B17/7001—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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention discloses an adjustable spinal internal fixator which comprises a nail body with an outer thread, wherein a nail head with the same outer thread as the nail body is arranged at one end of the nail body; an inner thread is formed in the nail body; the nail body is connected with a support post through the inner thread; one end of the support post extends out of the nail body and is clamped with the nail head; and the support post pushes the nail head to move through driving fit with the inner thread in the nail body, so that the centrum opening height is adjusted. The nail head is pushed to move through the support post; the target of freely adjusting the centrum height of a human body is achieved; and the centrum can completely restore into an original height confirming to the basic physiological curve of the human body, so that the treatment requirements of different people are met; the treatment effect on the diseases of lumbar instability, a thoracic lumbar degenerative disease and the like is improved.
Description
Technical field
The present invention relates to technical field of medical instruments, a kind of being applicable to treats lumbar instability, the adjustable spinal column internal fixation device of Thoracolumbar disk degeneration.
Background technology
Treatment currently for diseases such as lumbar instability, Thoracolumbar disk degeneratioies, many employing interbody fusions process above-mentioned symptom, but this therapeutic modality there are certain limitation, the most generally speaking, it is changeless that the spinal column internal fixation device that interbody fusion is used struts the height of vertebral body, and how many actually everyone vertebral heights also exists different, therefore some people is resulted in when treating, vertebral body cannot be completely recovered to original height, operation is thorough, and even corpus vertebrae replacement is undesirable and produce distortion phenomenon.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, it is provided that a kind of can freely regulate pyramidal support height, the adjustable spinal column internal fixation device making vertebral body return to basic human body physiological curve.
The technical solution adopted for the present invention to solve the technical problems is: a kind of adjustable spinal column internal fixation device, including there is externally threaded rivet nut, being positioned at rivet nut one end there is externally threaded ailhead identical with rivet nut, described rivet nut has female thread, rivet nut is connected by female thread support column, rivet nut and ailhead clamping are stretched out in support column one end, and support column regulates pyramidal support height by coordinating promotion ailhead to move with the female thread transmission of rivet nut.
Specifically, described support column includes the external thread section of integrative-structure, Rotary-table section and the linkage section between external thread section and Rotary-table section, external thread section is in transmission connection with the female thread of rivet nut, ailhead has the truncated cone-shaped inner chamber matched with Rotary-table section, support column by Rotary-table section snap in ailhead truncated cone-shaped inner chamber and with ailhead clamping.
Further, twisting support column for convenience, described external thread section end face has six side's counterbores of rotational support post.
Smooth with ailhead clamping for ease of support column, the sidewall of described ailhead correspondence truncated cone-shaped inner chamber has and is easy to spreading ailhead and makes the Rotary-table section of support column snap in truncated cone-shaped inner chamber and carefully stitch.
The invention has the beneficial effects as follows: the present invention promotes ailhead to move by support column, achieve the purpose freely regulating corpus vertebrae height, vertebral body can be made to be completely recovered to meet original height of basic human body physiological curve, thus meet the treatment requirement of different crowd, improve the therapeutic effect of the disease such as lumbar instability, Thoracolumbar disk degeneration.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
1. rivet nut 2. ailhead 2-1. truncated cone-shaped inner chamber 3. support column 3-1. external thread section 3-2. Rotary-table section 3-3. linkage section 3-4. six side's counterbore in figure
Detailed description of the invention
Presently in connection with accompanying drawing and preferred embodiment, the present invention is further illustrated.These accompanying drawings are the schematic diagram of simplification, and the basic structure of the present invention is described the most in a schematic way, and therefore it only shows the composition relevant with the present invention.
The adjustable spinal column internal fixation device of one as shown in Figure 1, is connected by rivet nut 1, ailhead 2 and support column 3 and combines.
Rivet nut 1: be a cylinder with external screw thread and internal thread hole；Ailhead 2: be made up of conical section and round platform section, the outside diameter of conical section is identical with rivet nut 1 diameter, the small end of conical section is connected with the small end of round platform section, ailhead 2 has the external screw thread identical with rivet nut 1, conical section at ailhead 2, offering the opening truncated cone-shaped inner chamber 2-1 towards the big end of conical section, the round platform g. slice header of ailhead 2 has self tapping groove；Support column 3: include the external thread section 3-1 of integrative-structure, Rotary-table section 3-2 and the linkage section 3-3 between external thread section 3-1 and Rotary-table section 3-2, external thread section 3-1 is in transmission connection with the female thread of rivet nut 1, there are six side counterbore 3-4 of rotational support post 3 at external thread section 3-1 end face, linkage section 3-3 diameter is less than external thread section 3-1 diameter, Rotary-table section 3-2 matches with described truncated cone-shaped inner chamber 2-1, support column 3 by Rotary-table section 3-2 snap in ailhead 2 truncated cone-shaped inner chamber 2-1 and with ailhead 2 clamping, and in order to clamping is convenient, the sidewall of ailhead 2 conical section has an axial thin seam, thus facilitate spreading ailhead 2 and make Rotary-table section 3-2 of support column 3 snap in truncated cone-shaped inner chamber 2-1.
After rivet nut 1 and ailhead 2 clamping are stretched out in support column 3 one end, support column 3 regulates pyramidal support height by coordinating promotion ailhead 2 to move with the female thread transmission of rivet nut 1.
The TC4 titanium alloy material that the GB13810-2007 that above-mentioned rivet nut 1, ailhead 2 and support column 3 all use specifies makes, during making, rivet nut 1 and ailhead 2 are integrally machined, completion of processing is cut along rivet nut 1 with ailhead 2 conical section joint, and on ailhead 2 conical section outer wall, open an axial thin seam, the female thread that the external thread section 3-1 of support column 3 is screwed into rivet nut 1 connects, and Rotary-table section 3-2 of support column 3 is exposed outside rivet nut, is fastened in Rotary-table section 3-2 by ailhead 2.During operation, first on the lumbar vertebra caudal vertebra of human body, open an osculum with osteotome, bore the hole of a certain depth again along osculum with drill bit, then inner fixer is held on nail holding device, along hole by the self tapping groove effect of ailhead 2 round platform g. slice header, inner fixer is screwed in vertebral body, then six side counterbore 3-4 of support column 3 head are snapped in bottle opener, rotate support column 3, support column 3 regulates pyramidal support height by coordinating promotion ailhead 2 to move with the female thread transmission of rivet nut 1, vertebral body is supportted the height wanting to reach, and such operation just completes.
The present invention promotes ailhead 2 to move by support column 3, achieve the purpose freely regulating corpus vertebrae height, vertebral body can be made to be completely recovered to meet original height of basic human body physiological curve, thus meet the treatment requirement of different crowd, improve the therapeutic effect of the disease such as lumbar instability, Thoracolumbar disk degeneration.
Above-described embodiment is only for technology design and the feature of the explanation present invention; its object is to allow person skilled in the art will appreciate that present disclosure and to be carried out; can not limit the scope of the invention with this; all equivalence changes made according to spirit of the invention or modification, all should contain within the scope of the present invention.
Claims (4)
1. an adjustable spinal column internal fixation device, including have externally threaded rivet nut (1), be positioned at rivet nut (1) one end have with the identical externally threaded ailhead of rivet nut (1) (2), it is characterized in that: described rivet nut (1) has female thread, rivet nut (1) is connected by female thread support column (3), rivet nut (1) and ailhead (2) clamping are stretched out in support column (3) one end, and support column (3) regulates pyramidal support height by coordinating promotion ailhead (2) mobile with the female thread transmission of rivet nut (1).
Adjustable spinal column internal fixation device the most according to claim 1, it is characterized in that: described support column (3) includes the external thread section (3-1) of integrative-structure, Rotary-table section (3-2) and the linkage section (3-3) being positioned between external thread section (3-1) and Rotary-table section (3-2), external thread section (3-1) is in transmission connection with the female thread of rivet nut (1), ailhead (2) has the truncated cone-shaped inner chamber (2-1) matched with Rotary-table section (3-2), support column (3) by Rotary-table section (3-2) snap in ailhead (2) truncated cone-shaped inner chamber (2-1) and with ailhead (2) clamping.
Adjustable spinal column internal fixation device the most according to claim 2, is characterized in that: described external thread section (3-1) end face has six side's counterbores (3-4) of rotational support post (3).
Adjustable spinal column internal fixation device the most according to claim 2, is characterized in that: have, on the sidewall of the corresponding truncated cone-shaped inner chamber (2-1) of described ailhead (2), the thin seam being easy to spreading ailhead (2) and make the Rotary-table section (3-2) of support column (3) snap in truncated cone-shaped inner chamber (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610301566.7A CN105816229A (en) | 2016-05-09 | 2016-05-09 | Adjustable spinal internal fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610301566.7A CN105816229A (en) | 2016-05-09 | 2016-05-09 | Adjustable spinal internal fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105816229A true CN105816229A (en) | 2016-08-03 |
Family
ID=56529119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610301566.7A Pending CN105816229A (en) | 2016-05-09 | 2016-05-09 | Adjustable spinal internal fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105816229A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074882A (en) * | 1988-06-09 | 1991-12-24 | Medinov Sarl | Progressive elongation centro-medullar nail |
| CN101695453A (en) * | 2009-10-26 | 2010-04-21 | 杨惠林 | Vertebral arch pedicle extension device |
| US20140277137A1 (en) * | 2013-03-14 | 2014-09-18 | DePuy Synthes Products, LLC | Devices and methods for monoaxial screw conversion |
| CN104224302A (en) * | 2014-09-02 | 2014-12-24 | 浙江科惠医疗器械有限公司 | Locking bone screw with expansionstructure |
| CN104323850A (en) * | 2014-09-13 | 2015-02-04 | 吴爱悯 | Transpedicular intervertebral disc diagonal compressible and extensible hollow screw |
| KR20150120105A (en) * | 2014-04-17 | 2015-10-27 | 경북대학교 산학협력단 | Screw fixing apparatus |
| US9173692B1 (en) * | 2012-06-15 | 2015-11-03 | Stc.Unm | Composite metal and bone orthopedic fixation devices |
| US20150327903A1 (en) * | 2009-02-23 | 2015-11-19 | Orthopediatrics Corp. | Bone screw |
| CN205729489U (en) * | 2016-05-09 | 2016-11-30 | 常州集硕医疗器械有限公司 | Adjustable spinal column internal fixation device |
-
2016
- 2016-05-09 CN CN201610301566.7A patent/CN105816229A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074882A (en) * | 1988-06-09 | 1991-12-24 | Medinov Sarl | Progressive elongation centro-medullar nail |
| US20150327903A1 (en) * | 2009-02-23 | 2015-11-19 | Orthopediatrics Corp. | Bone screw |
| CN101695453A (en) * | 2009-10-26 | 2010-04-21 | 杨惠林 | Vertebral arch pedicle extension device |
| US9173692B1 (en) * | 2012-06-15 | 2015-11-03 | Stc.Unm | Composite metal and bone orthopedic fixation devices |
| US20140277137A1 (en) * | 2013-03-14 | 2014-09-18 | DePuy Synthes Products, LLC | Devices and methods for monoaxial screw conversion |
| KR20150120105A (en) * | 2014-04-17 | 2015-10-27 | 경북대학교 산학협력단 | Screw fixing apparatus |
| CN104224302A (en) * | 2014-09-02 | 2014-12-24 | 浙江科惠医疗器械有限公司 | Locking bone screw with expansionstructure |
| CN104323850A (en) * | 2014-09-13 | 2015-02-04 | 吴爱悯 | Transpedicular intervertebral disc diagonal compressible and extensible hollow screw |
| CN205729489U (en) * | 2016-05-09 | 2016-11-30 | 常州集硕医疗器械有限公司 | Adjustable spinal column internal fixation device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |