CN207084850U - A kind of guider for inserting pedicle screw - Google Patents
A kind of guider for inserting pedicle screw Download PDFInfo
- Publication number
- CN207084850U CN207084850U CN201720194891.8U CN201720194891U CN207084850U CN 207084850 U CN207084850 U CN 207084850U CN 201720194891 U CN201720194891 U CN 201720194891U CN 207084850 U CN207084850 U CN 207084850U
- Authority
- CN
- China
- Prior art keywords
- pedicle screw
- locating rod
- guider
- guide part
- guide
- 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.)
- Expired - Fee Related
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a kind of guider for inserting pedicle screw, including locating rod, stretch out a guide part in the middle part of locating rod, guide part is axially arranged with guide through hole along locating rod, one end of locating rod can be inserted into the inner chamber of pedicle screw, while described guide part can be embedded in the U-lag of pedicle screw head.Further, it is radially provided with a resigning through hole along locating rod on the guide part；The guide part is provided with the scale axially in parallel with locating rod.The central axis for the more pieces of pedicle screws that the utility model can be put into is positioned in same plane, pitman is facilitated to be connected more pieces of pedicle screws, so that equal selectable one-way pedicle screw in operation, realizes that simple, reliable, quick, cheap copline puts nail.
Description
Technical field
Manufacture technology field of medical appliance is the utility model is related to, especially a kind of guider for inserting pedicle screw.
Background technology
In recent years, micro-wound percutaneous pedicle screw technique for fixing is progressively applied to spinal surgery, is treatment Thoracolumbar disk bone
A kind of better method of folding.
As shown in Figures 1 and 2, it is a kind of unidirectional pedicle screw, it includes nail portion 8 and head 9, and nail portion 8 has
One inner chamber 81, head 9 have the U-lag 91 of a communication with cavity 81, and the inner surface of U-lag 91 is provided with internal thread 91a.Performing the operation
In insert after more pieces of pedicle screws, it is necessary to by a pitman while insert the U-lag of more pieces of pedicle screws, then pass through
The head that clamp nut is locked in pedicle screw is solidly fixed more pieces of pedicle screws, to reach firm fixed structure.
But in actual operation, because pedicle screw is percutaneously to insert, it is difficult to make the U-lag of more pieces of pedicle screws
It is in the same plane, thus percutaneous cervical arc root screw through hinder vertebra fix when, it is impossible to all from unidirectional pedicle screw, it is necessary to
The pedicle screw that selecting some heads has gimbal function is used in combination, but the mechanical strength of Universal pedicle screw is relatively
It is weak, easily cause situations such as reduction of the fracture is not good enough, the later stage highly loses.At present, such as will be all using unidirectional pedicle of vertebral arch screw
For nail, it is necessary to by Computer navigation surgery, equipment is expensive, is installed in art, debugging is complicated.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of guider for inserting pedicle screw, can put into
The central axis of more pieces of pedicle screws is positioned in same plane, facilitates pitman to be connected more pieces of pedicle screws so that hand
Equal selectable one-way pedicle screw, realizes that simple, reliable, quick, cheap copline puts nail in art.
To reach above-mentioned purpose, the technical solution of the utility model is：A kind of guider for inserting pedicle screw, including
Locating rod, stretch out in the middle part of locating rod a guide part, be axially arranged with guide through hole of the guide part along locating rod, and the one of locating rod
End can be inserted into the inner chamber of pedicle screw, while described guide part can be embedded in the U-lag of pedicle screw head.
As preferred structure, the shape of cross section of guide through hole be include positioned at centre rectangle and respectively connection rectangle two
Two semicircles at end.
As an improvement, it is radially provided with a resigning through hole along locating rod on guide part.
As an improvement, guide part is provided with the scale axially in parallel with locating rod.Further, the scale is correspondingly arranged on
Twice.
As preferred structure, one end of guide part includes a connecting portion, be provided with the outer peripheral face of locating rod one with
The groove that connecting portion shape is adapted, connecting portion insert described groove and are fixed on by welding in locating rod.
As preferred structure, described locating rod includes main part and pin portion, and main part can be inserted into pedicle screw head
U-lag, pin portion can be inserted into pedicle screw inner chamber.
As preferred structure, main part and the pin portion connects into the company of ladder circle column, described main part and pin portion
Meet place and be provided with the first shoulder, main part is provided with the second shoulder.
The beneficial effects of the utility model are：One end of locating rod can be inserted into the inner chamber of pedicle screw, reach positioning mesh
, guide part along locating rod be axially arranged with guide through hole and guide part can be embedded in the U-lag of pedicle screw head, it is such
The pedicle screw implantation site that words are determined by guide through hole just can be in the central axis of more pieces of pedicle of vertebral arch screw ailheads
On same plane, each piece of pedicle screw head U-lag is on same straight line, facilitates pitman to pass through each piece of pedicle screw
Head U-lag is fixed together each piece of pedicle screw.All resetted under the conditions of realizing percutaneously using unidirectional pedicle screw,
Fixation for treatment thoracolumbar fracture, the effect of making the minimal invasive techniques, are further lifted, and reaching screw selection is no longer restricted, multiple
Position, orthopedic the ability purpose consistent with conventional open art formula.Realize that simple, reliable, quick, cheap copline puts nail.
Brief description of the drawings
Fig. 1 is a kind of unidirectional pedicle screw top view；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is front view of the present utility model；
Fig. 4 is locating rod stereogram；
Fig. 5 is guide part stereogram；
Fig. 6 is the schematic diagram that the utility model is engaged positioning with unidirectional pedicle screw shown in Fig. 1.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Shown in Fig. 1 to Fig. 5, a kind of guider for inserting pedicle screw, including locating rod 1, the middle part of locating rod 1 is to extension
A guide part 2 is stretched, guide part 2 is axially arranged with guide through hole 3 along locating rod 1, and the shape of cross section of guide through hole 3 is to include position
Rectangle and two semicircles at connection rectangle both ends respectively in centre.
One end of locating rod 1 can be inserted into the inner chamber 81 of pedicle screw, while described guide part 2 can be embedded in pedicle of vertebral arch screw
The U-lag 91 of nail head 9.
Described guide through hole 3 can be inserted into puncture needle 31, and puncture needle 31 determines pin mark, realizes the pedicle of vertebral arch screw of different parts
The operation such as nail positioning and puncture, removes guider after completing operation, inserts pedicle screw according to the anchor point of puncture needle 31, put
The more pieces of pedicle screw central axis entered can be in approximately the same plane, facilitates pitman while inserts more pieces of pedicle screws
U-lag.
A resigning through hole 4 is radially provided with along locating rod 1 on guide part 2, to reduce in puncture needle 31 and guide through hole 3
The friction of wall.
It is parallel to realize that accurate pin mark positioning and puncture needle 31 are axially axially substantially at locating rod 1 for convenience
State, guide part 2 are provided with twice and the axially in parallel scale 5 of locating rod 1, facilitate puncture needle 31 to calibrate.
One end of guide part 2 includes a connecting portion 21, and connecting portion 21 can be partially submerged into the U-lag of pedicle screw,
A groove 11 being adapted with the shape of connecting portion 21 is provided with the outer peripheral face of locating rod 1, connecting portion 21 inserts described groove
11 and by welding be fixed in locating rod 1.
Coordinate again shown in Fig. 6, locating rod 1 includes main part 12 and pin portion 13, and pin portion 13 can be inserted into pedicle screw inner chamber
81, main part 12 can be inserted into the U-lag of pedicle screw head 9.Main part 12 and pin portion 13 connect into ladder circle cylindricality.
The junction in main part 12 and pin portion 13 is provided with the first shoulder 6, and main part 12 is provided with the second shoulder 7.Main part
The part in the bottom of the second shoulder 7 has female part embedded in pedicle screw head 9 on 12, is on main part 12
The part on the top of the second shoulder 7 does not have the part of internal thread embedded in pedicle screw head 9.
It the above is only one preferred embodiment of the utility model, those skilled in the art is made equivalent by claim
Change the protection domain for both falling within this case.
Claims (8)
- A kind of 1. guider for inserting pedicle screw, it is characterised in that：Including locating rod, stretch out in the middle part of locating rod and lead To portion, be axially arranged with guide through hole of the guide part along locating rod, one end of locating rod can be inserted into the inner chamber of pedicle screw, simultaneously Described guide part can be embedded in the U-lag of pedicle screw head.
- A kind of 2. guider for inserting pedicle screw according to claim 1, it is characterised in that：The guide through hole Shape of cross section is two semicircles for including connecting rectangle both ends positioned at middle rectangle and respectively.
- A kind of 3. guider for inserting pedicle screw according to claim 1, it is characterised in that：Edge on the guide part Locating rod is radially provided with a resigning through hole.
- A kind of 4. guider for inserting pedicle screw according to claim 1, it is characterised in that：Set on the guide part There is the scale axially in parallel with locating rod.
- A kind of 5. guider for inserting pedicle screw according to claim 4, it is characterised in that：The scale is correspondingly set It is equipped with twice.
- A kind of 6. guider for inserting pedicle screw according to claim 1, it is characterised in that：One end bag of guide part A connecting portion has been included, a groove being adapted with connecting portion shape, connecting portion insertion institute are provided with the outer peripheral face of locating rod The groove stated and it is fixed on by welding in locating rod.
- A kind of 7. guider for inserting pedicle screw according to any one of claim 1 to 6, it is characterised in that：It is described Locating rod include main part and pin portion, main part can be inserted into the U-lag of pedicle screw head, and pin portion can be inserted into pedicle of vertebral arch screw Follow closely inner chamber.
- A kind of 8. guider for inserting pedicle screw according to claim 7, it is characterised in that：The main part and pin Portion connects into ladder circle column, and the junction in described main part and pin portion is provided with the first shoulder, and main part is provided with the second shoulder Platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194891.8U CN207084850U (en) | 2017-03-01 | 2017-03-01 | A kind of guider for inserting pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194891.8U CN207084850U (en) | 2017-03-01 | 2017-03-01 | A kind of guider for inserting pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207084850U true CN207084850U (en) | 2018-03-13 |
Family
ID=61547453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720194891.8U Expired - Fee Related CN207084850U (en) | 2017-03-01 | 2017-03-01 | A kind of guider for inserting pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207084850U (en) |
-
2017
- 2017-03-01 CN CN201720194891.8U patent/CN207084850U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20210301 |