CN108210036A - A kind of vertebral column internal fixation nail stick retaining mechanism - Google Patents
A kind of vertebral column internal fixation nail stick retaining mechanism Download PDFInfo
- Publication number
- CN108210036A CN108210036A CN201611151876.1A CN201611151876A CN108210036A CN 108210036 A CN108210036 A CN 108210036A CN 201611151876 A CN201611151876 A CN 201611151876A CN 108210036 A CN108210036 A CN 108210036A
- Authority
- CN
- China
- Prior art keywords
- pitman
- briquetting
- jackscrew
- groove
- internal 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.)
- Pending
Links
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (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 belongs to the field of medical instrument technology, more particularly to a kind of spinal internal fixation system, including pedicle nail, pitman, briquetting and jackscrew, there is nail seat on pedicle nail, there is groove in nail seat, pitman passes through the groove, briquetting is placed in the groove and pitman is made to be compressed with the groove and is bonded, pitman is circular rod, the face being bonded on briquetting with pitman is seal face, seal face is V-arrangement face or trapezoidal faces, and jackscrew is placed in the groove and briquetting is made to be compressed with pitman and is bonded.The spinal internal fixation system of the present invention is by installing briquetting additional so that structure is more firm.
Description
Technical field
The invention belongs to the field of medical instrument technology, and in particular to a kind of vertebral column internal fixation nail stick retaining mechanism.
Background technology
At present, it is unstable for spinal trauma, slippage, degenerative disease and other single hops or several sections of fracture postcentrum, it adopts more
It is fixed with spine fixator.Fixator kind now on the market is more, but major part all passes through pedicle screw, pedicle of vertebral arch ten thousand
To other corresponding components composition such as screw, pitman.Most common problem is pedicle screw with connecting in existing fixator
For stick since line contact friction force is less than normal, the application direction for making power is uncontrollable, and unbalance loading is easily generated when screwing jackscrew and compressing connection,
So as to which jackscrew, pedicle screw screw thread be made to generate breakoff phenomenon, i.e. quick-fried silk, so as to cause the failure of implantation material.
Invention content
The object of the present invention is to provide a kind of vertebral column internal fixation nail stick retaining mechanism, by installing briquetting additional so that structure is more
Add firm.
To achieve the above object, the technical solution adopted in the present invention is：Including pedicle nail, pitman, briquetting and top
Thread, on pedicle nail there is nail seat, there is groove in nail seat, pitman passes through the groove, and briquetting is placed in the groove
And pitman is made to be compressed with the groove and is bonded, pitman is circular rod, and the face being bonded on briquetting with pitman is seal face, is pressed
Tight face is V-arrangement face or trapezoidal faces, and jackscrew is placed in the groove and briquetting is made to be compressed with pitman and is bonded.
Preferably, the outer wall of the jackscrew is equipped with screw thread, and jackscrew is spirally connected with nail seat.
Preferably, one end of the jackscrew engages with briquetting, and the other end of jackscrew is equipped with fitting groove.
Preferably, the end of jackscrew is stretched into one end of the briquetting, and the end of jackscrew has a barb, and the end of briquetting has
There is the step of a protrusion, the step makes briquetting be connect with jackscrew with barb engaging.
Preferably, the bottom of the groove is in the arc-shaped being bonded with the outer wall of pitman.
After adopting the above technical scheme, the present invention has the positive effect that：
(1) spinal internal fixation system in the present invention, by installing briquetting between pitman and jackscrew, and on briquetting
Seal face is V-arrangement face or trapezoidal faces, and briquetting is enable to contact compression with pitman, avoids the point of existing jackscrew and pitman
The easy quick-fried silk phenomenon brought is contacted, makes structure more firm, reduces crash rate；
(2) engaged by way of hook drawing between jackscrew and briquetting, the two is made to be connected firmly, two in jackscrew screwing operations
Person is not susceptible to dislocation movement, easy to operation.
Description of the drawings
Fig. 1 is spinal internal fixation system structure chart in embodiment 1；
Fig. 2 is schematic diagram after spinal internal fixation system local location section view in embodiment 1；
Fig. 3 is jackscrew and the structure chart after briquetting cooperation in embodiment 1；
Fig. 4 is jackscrew and the structure chart after briquetting cooperation in embodiment 2.
Wherein：1st, pedicle nail, 11, nail seat, 2, pitman, 3, briquetting, 31, seal face, 4, jackscrew, 41, barb, 5, dress
Slot allocation, 6, relief.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term should broadly understood, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1
As shown in Figs. 1-3, it is the spinal internal fixation system of the present embodiment, including pedicle nail 1, pitman 2,3 and of briquetting
Jackscrew 4, one end of pedicle nail 1 have a nail seat 11, and the other end of pedicle nail 1 has a relief 6, and relief 6 is along pedicle of vertebral arch
The direction of extension extension of nail 1.
There is groove, pitman 2 passes through the groove, and pitman 2 is columnar circular rod, the groove in nail seat 11
Bottom is in the arc-shaped being bonded with the outer wall of pitman 2, i.e. pitman 2 is bonded with the bottom of groove.Briquetting 3 is placed in described recessed
In slot, briquetting 3 is set on the top of pitman 2, and briquetting 3 is bonded pitman 2 and the groove compression, on briquetting 3 with pitman 2
The face of fitting is seal face 31, and seal face 31 is V-arrangement face, passes through two sides in V-arrangement face on briquetting 3 and the circular arc of pitman 2
The outer wall cooperation of shape, enables briquetting 3 to be bonded with pitman 2, and pitman 2 can divide normal pressure equally under equal locking effect,
Reduce the quick-fried silk incidence of jackscrew 4.
Jackscrew 4 is placed in the groove and set on the top of briquetting 3, and jackscrew 4 compresses briquetting 3, makes briquetting 3 and pitman
2 can compress fitting.One end of jackscrew 4 engages with briquetting 3, wherein, the end of jackscrew 4 is stretched into one end of briquetting 3, jackscrew 4
End has a barb 41, and the end of briquetting 3 has the step of a protrusion, and the step engages with barb 41 makes briquetting 3 and top
Silk 4 is fixedly connected, and prevents the two relative movement during use.The other end of jackscrew 4 is equipped with fitting groove 5, the setting of fitting groove 5
The effect of jackscrew 4 is tightened convenient for external application tool.The outer wall of jackscrew 4 is equipped with screw thread, and the inner wall of groove also is provided with screw thread, jackscrew 4 with
Groove is spirally connected so that jackscrew 4 can be screwed in from the top of nail seat 11 in the groove, and pitman 2 is compressed.
The spinal internal fixation system of the present invention is because having installed briquetting 3 additional, by the way that circular rod is fastened on V-arrangement face or trapezoidal faces
Between two sides, the easy quick-fried silk phenomenon that the point contact of existing jackscrew and pitman is brought is avoided, makes structure more firm,
Reduce system failure rate.
Embodiment 2
As shown in figure 4, the present embodiment is with embodiment 1, difference lies in seal face 31 is trapezoidal faces.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the present invention claims protection domain it
It is interior.
Claims (5)
1. a kind of vertebral column internal fixation nail stick retaining mechanism, it is characterised in that：Including pedicle nail (1), pitman (2), briquetting (3)
With jackscrew (4), there is nail seat (11) on pedicle nail (1), there is groove in nail seat (11), pitman (2) across the groove,
Briquetting (3) is placed in the groove and pitman (2) is made to be compressed with the groove and is bonded, and pitman (2) is circular rod, briquetting
(3) face being bonded on pitman (2) is seal face (31), and seal face (31) is V-arrangement face or trapezoidal faces, and jackscrew (4) is placed in
In the groove and briquetting (3) is made to be bonded with pitman (2) compression.
2. vertebral column internal fixation nail stick retaining mechanism according to claim 1, it is characterised in that：The outer wall of jackscrew (4) is equipped with
Screw thread, jackscrew (4) are spirally connected with nail seat (11).
3. vertebral column internal fixation nail stick retaining mechanism according to claim 1, it is characterised in that：One end of jackscrew (4) and pressure
Block (3) engages, and the other end of jackscrew (4) is equipped with fitting groove (5).
4. vertebral column internal fixation nail stick retaining mechanism according to claim 3, it is characterised in that：One end of briquetting (3) is stretched into
The end of jackscrew (4), the end of jackscrew (4) have a barb (41), and the end of briquetting (3) has the step of a protrusion, described
Step makes briquetting (3) be connect with jackscrew (4) with barb (41) engaging.
5. vertebral column internal fixation nail stick retaining mechanism according to claim 1, it is characterised in that：The bottom of the groove be in
The arc-shaped of the outer wall fitting of pitman (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151876.1A CN108210036A (en) | 2016-12-14 | 2016-12-14 | A kind of vertebral column internal fixation nail stick retaining mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151876.1A CN108210036A (en) | 2016-12-14 | 2016-12-14 | A kind of vertebral column internal fixation nail stick retaining mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108210036A true CN108210036A (en) | 2018-06-29 |
Family
ID=62639017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611151876.1A Pending CN108210036A (en) | 2016-12-14 | 2016-12-14 | A kind of vertebral column internal fixation nail stick retaining mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108210036A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876410A (en) * | 2021-12-09 | 2022-01-04 | 中国医学科学院北京协和医院 | Improved locking structure and assembly method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624841Y (en) * | 2002-09-16 | 2004-07-14 | 北京市春立正达科技开发有限公司 | Internal fixer for spine |
-
2016
- 2016-12-14 CN CN201611151876.1A patent/CN108210036A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624841Y (en) * | 2002-09-16 | 2004-07-14 | 北京市春立正达科技开发有限公司 | Internal fixer for spine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876410A (en) * | 2021-12-09 | 2022-01-04 | 中国医学科学院北京协和医院 | Improved locking structure and assembly method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |
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| RJ01 | Rejection of invention patent application after publication |