CN209153931U - Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw - Google Patents
Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw Download PDFInfo
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- CN209153931U CN209153931U CN201820123113.4U CN201820123113U CN209153931U CN 209153931 U CN209153931 U CN 209153931U CN 201820123113 U CN201820123113 U CN 201820123113U CN 209153931 U CN209153931 U CN 209153931U
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- fixation system
- connecting rod
- internal fixation
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Abstract
The utility model relates to a kind of Via Posterior Spinal Approach internal fixation system polyaxial pedicle screws, with screw base and the body of screw for being connected to screw base lower end, it is caught in the screw base and connecting rod is installed, the card plug for being equipped with and being pressed in connecting rod is caught in screw base, card plug internal screw thread is connected with the plug screw for compressing connecting rod and preventing card plug from loosening, and the body of screw breech face has 6 stellate interfaces of the plum blossom-shaped for connecting the tool that is screwed into.The utility model improves user and operates instrument sensing capability, reduce the operating time, screw is screwed into rear stability at bone fracture and is improved, while also avoiding generating quick-fried silk phenomenon by the way that 6 stellate interfaces are arranged in body of screw tail end.
Description
Technical field
It is especially a kind of for treating the Via Posterior Spinal Approach of Thoracolumbar disk disease the utility model relates to the field of medical instrument technology
Internal fixation system polyaxial pedicle screw.
Background technique
Human vertebra occurs lesion or by wound, and it is relatively difficult that treatment, which is got up, and treats spinal disease often
It needing to have an operation, operation needs specific medical instrument, and in this kind of medical instruments, Via Posterior Spinal Approach internal fixation system is just
It is the one kind often used.Wherein polyaxial pedicle screw is just widely used in treating Thoracolumbar disk disease, restores centrum
Normal position maintains the stability of backbone, and lesion or damaged part is promoted quickly to heal.But existing polyaxial pedicle screw,
In configuration aspects, there is also certain deficiencies, wherein the screw after squeezing into is influenced to be easy to produce by external force skids off phenomenon, especially grasp
As when tighten instrument and screw conformability it is bad, sensing capability is poor, and screw is screwed into that the time is longer, and especially screwing force is excessive
When screw base be also easy to generate quick-fried silk, influence operational safety.
Summary of the invention
Technical problem to be solved by the utility model is: the utility model provides in order to overcome the deficiencies in the existing technology
It is a kind of can Quick fastening, improve instrumentation sensing capability Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of Via Posterior Spinal Approach internal fixation system multiaxis
Pedicle screw is caught in the screw base with screw base and the body of screw for being connected to screw base lower end and is equipped with connection
Bar is caught in the card plug for being equipped with and being pressed in connecting rod in screw base, and card plug internal screw thread, which is connected with, to be compressed connecting rod and prevent card plug
The plug screw of loosening, the body of screw breech face have 6 stellate interfaces of the plum blossom-shaped for connecting the tool that is screwed into.
The double coatings formed on the screw thread of the body of screw with pure titanium+HA, double coatings use thermal spraying mode shape
At, the growth at bone fracture can be promoted to heal after use, enhancing resisting pull out forces, acceleration Rehabilitation.
It is respectively provided with circumferentially uniformly distributed axial notch on first three circle screw thread of the body of screw front end, in surgical procedure
When, since axial notch acts on, 5% torque for being screwed into tool needs can be reduced, shortened for 10% rotation nail time, improves operation effect
Rate.
It preferably, is the quick connection for realizing card plug and screw base, the card plug is caught in after screw base using rotation nine
Ten degree of mode is pressed in connecting rod.
The body of screw tail end and screw base junction annular is equipped with non-slip groove, to prevent plug screw from tightening rear screw base phase
Shaking is generated to the body of screw.
The beneficial effects of the utility model are: the utility model is mentioned by the way that 6 stellate interfaces are arranged in body of screw tail end
High user operates instrument sensing capability, reduces the operating time, screw is screwed into rear stability at bone fracture and is improved.
Detailed description of the invention
The present invention will be further described with embodiment with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the decomposition texture schematic diagram of the utility model.
In figure: 1. screw base, 2. body of screw 2-1., 6 stellate interface 2-2. axial notch 2-3. non-slip grooves 3. connect
4. card plug of extension bar, 5. plug screw
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
A kind of Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw as shown in Figure 1 and Figure 2 has screw base 1 and connection
The body of screw 2 in 1 lower end of screw base, the screw base 1 have the U-shaped bayonet of upper end opening, have been caught in out of this U-shaped bayonet
Connect other screws connecting rod 3 and be pressed in connecting rod 3 tool internal thread card plug 4, card plug 4 is connected with by its internal screw thread
The plug screw 5 for compressing connecting rod 3 and preventing card plug 4 from loosening, the design structure of this card plug 4 and plug screw 5 can effectively avoid existing knot
The 1 quick-fried silk phenomenon of screw base occurred in the pedicle screw use process of structure improves Product Safety, validity.
2 breech face of the body of screw has 6 stellate interface 2-1 of plum blossom-shaped, is connected by 6 stellate interface 2-1
The tool of being screwed into is connect, is conducive to improve sensing capability when user operates instrument and screw fit, shortens operating time；And in spiral shell
By thermal spraying mode on the screw thread of rivet nut 2, the double coatings being made of pure titanium+HA (hydroxyapatite) are formed, to promote bone fracture
The growth at place is healed, and resisting pull out forces are enhanced, and accelerates Rehabilitation；20 are respectively provided on first three circle screw thread of 2 front end of the body of screw
A circumferentially uniformly distributed axial notch 2-2, the bottom axial notch 2-2 is arc-shaped, after axial notch 2-2 is arranged, can reduce by 5% and be screwed into
The torque that tool needs shortened for 10% rotation nail time, improves procedure efficiency.
2 tail end of the body of screw and 1 junction of screw base is additionally provided with the non-slip groove 2-3 of annular, to prevent plug screw 5 from tightening
Screw base 1 generates shaking with respect to the body of screw 2 afterwards, improves the stability that screw uses.
When assembly, first the body of screw 2 and screw base 1 are linked and packed, are screwed into 6 stars of tool Yu 2 tail end of the body of screw
Interface 2-1 cooperation inserts screws at the injury of the bone, after then connecting rod 3 is caught in from the U-shaped bayonet of screw base 1, then by card plug 4 from
U-shaped bayonet is caught in screw base 1, and card plug 4 is then rotated clockwise 90 °, and finally plug screw 5 is screwed into card plug 4, completes screw
Locking.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (5)
1. a kind of Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw has screw base (1) and is connected to screw base (1) lower end
The body of screw (2), be equipped with connecting rod (3) it is characterized in that: being caught in the screw base (1), be caught in installation in screw base (1)
There is the card plug (4) being pressed on connecting rod (3), card plug (4) internal screw thread, which is connected with, to be compressed connecting rod (3) and prevent card plug (4) from loosening
Plug screw (5), the body of screw (2) breech face have for connect the tool that is screwed into plum blossom-shaped 6 stellate interface (2-
1)。
2. Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw as described in claim 1, it is characterized in that: the body of screw
(2) the double coatings formed on screw thread with pure titanium+HA.
3. Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw as described in claim 1, it is characterized in that: the body of screw
(2) circumferentially uniformly distributed axial notch (2-2) is respectively provided on first three circle screw thread of front end.
4. Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw as described in claim 1, it is characterized in that: the card plug
(4) it is pressed on connecting rod (3) after being caught in screw base (1) interior rotated ninety degrees.
5. Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw as described in claim 1, it is characterized in that: the body of screw
(2) tail end and screw base (1) junction annular, which are equipped with, prevents plug screw (5) from tightening rear screw base (1) with respect to the body of screw (2) shaking
Non-slip groove (2-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820123113.4U CN209153931U (en) | 2018-01-24 | 2018-01-24 | Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820123113.4U CN209153931U (en) | 2018-01-24 | 2018-01-24 | Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209153931U true CN209153931U (en) | 2019-07-26 |
Family
ID=67326089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820123113.4U Active CN209153931U (en) | 2018-01-24 | 2018-01-24 | Via Posterior Spinal Approach internal fixation system polyaxial pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209153931U (en) |
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2018
- 2018-01-24 CN CN201820123113.4U patent/CN209153931U/en active Active
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