CN201320214Y - Axis laminar screw arranging guider - Google Patents
Axis laminar screw arranging guider Download PDFInfo
- Publication number
- CN201320214Y CN201320214Y CNU2008201695633U CN200820169563U CN201320214Y CN 201320214 Y CN201320214 Y CN 201320214Y CN U2008201695633 U CNU2008201695633 U CN U2008201695633U CN 200820169563 U CN200820169563 U CN 200820169563U CN 201320214 Y CN201320214 Y CN 201320214Y
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- screw
- lamina
- nail
- cross bar
- axis
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Abstract
An axis laminar screw arranging guider is characterized by comprising a vertical rod and a transverse rod. The vertical rod is provided with a sharp end for location, the middle portion of the vertical rod which is in T shape approximately is perpendicularly arranged on the transverse rod, and the end of the transverse rod is provided with a guiding barrel for guiding a screw arranging drill bit. Compared with the prior art, the utility model has the advantages that the axis laminar screw arranging guider can stably and accurately control the drilling direction of the screw arranging drill bit, and guarantees screws to be arranged in the axis laminar accurately without hurting a vertebral canal, thereby guaranteeing success ratio of operations and safety of patients.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind ofly to be applied to operating lamina of axis screw and to put the nail guider.
Background technology
Because the complicated anatomy relationship and the operation risk of upper cervical spine, dentata way of escape technique for fixing is a difficult point clinically always.The way of escape is the fixed main stream approach of present way of escape dentata through articulatio atlantoepistrophica screw fixation (be called for short Magerl art) and C2 lateral mass or pedicle screw.
Magerl fixedly provides strong fixing through the joint screw technology because screw is worn four layers of cortical bone of articulatio atlantoepistrophica, but has the very high specification requirement and the risk of vertebral artery injuries through joint screw.The C2 pedicle screw has certain technical requirements equally, though it is less relatively to damage vertebrarterial probability, exists too.May there be variation in the position of the angle of pedicle of vertebral arch, diameter and transverse foramen, the transverse foramen of C2 vertebral body side must be avoided in good screw nail road, in some case, too small or the vertebral artery position of C2 pedicle of vertebral arch in partially etc. anatomical factors may should not use the C2 LOCATION OF PEDICLE SCREW FIXATION, Igarashi etc. studies show that the pedicle of vertebral arch diameter of 20% cadaver sample is less than 3.5mm.Equally, approach in the little case at some vertebral artery and dentata lateral mass such as the traveling of " high position rides " formula, the C2 lateral mass screw may be also inapplicable, and the constant intensity of dentata lateral mass screw on biomechanics is usually limited.
Dentata is different from other cervical vertebras on dissecting, have vertebral plate the thickest in cervical vertebra, and this is for providing feasibility through the vertebral plate internal fixation.Wrigth etc. at first in 2004 annual reports in 10 routine patients the successful Application dentata fix through the vertebral plate screw, obtained good and clinical curative effect.Firm dentata is no longer dependent on the position of pedicle of vertebral arch, lateral mass and transverse foramen through vertebral plate screw hold-down screw, and is comparatively simple technically.Because the vertebral plate screw is positioned at the rear structure of C2, transverse foramen is avoided in the nail road fully, so this technology does not almost have the risk of vertebral artery injuries.But it is exactly that the screw veutro cortex that may break through vertebral plate enters canalis spinalis and invades the neck marrow that dentata is fixed a tangible weak point through the vertebral plate screw.This technical risk of lamina of axis screw has limited this technology and has popularized clinical, so the auxiliary nail of putting of the special-purpose operating theater instruments of clinical needs to guarantee accurately to put nail, reduces the error of operation.
The utility model content
Thereby technical problem to be solved in the utility model is to provide a kind of confession to put the satisfied lamina of axis screw of accurately putting nail of the stable accurately boring of nail bit head to put the nail guider at the above-mentioned state of the art.
This utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of lamina of axis screw is put the nail guider, it is characterized in that comprising montant and cross bar, described montant has and is used for localized pointed end, described cross bar is vertical at described montant middle part and T-shaped substantially, and described crossbar end has one and is used to lead and puts the guide cylinder of nail bit head.
Further, described guide cylinder and described cross bar are an acute angle, and as the best, described guide cylinder and described cross bar are 45 ° of acute angles.
Be convenient to regulate the height of montant, described montant is made up of the straight tube and the telescopic positioning needle of being located in the straight tube of hollow, and one regulates bolt laterally is arranged in the screw on the described straight pipe wall and offsets with described positioning needle.
Be convenient to regulate the lateral length of cross bar, described cross bar is made up of the transverse tube and the telescopic guide post of being located in the transverse tube of hollow, described guide cylinder then is located at described guide post end, and one screws bolt vertically is arranged in the screw on the described transverse tube wall and offsets with described guide post.
Further, described montant top laterally is provided with a handle of being convenient to the application of force.
Compared with prior art, advantage of the present utility model is: utilize this utility model can stablize accurately the boring direction that the nail bit head is put in control, guarantee that screw inserts exactly in vertebral plate and do not invade canalis spinalis, and then guarantee the success of operation and patient's safety; Overall construction design is ingenious, rational in infrastructure; The design of adjustable type can be expanded the application space, deals with different patients' practical situation, reaches the purpose of one-object-many-purposes.
Description of drawings
Fig. 1 is the structural representation of embodiment.
Fig. 2 is the cutaway view of embodiment.
Fig. 3 is the application state figure of embodiment.
The specific embodiment
Embodiment describes in further detail this utility model below in conjunction with accompanying drawing.
Embodiment: with reference to illustrated in figures 1 and 2, the lamina of axis screw in the present embodiment is put the nail guider and is comprised montant 2 and cross bar 3.
Cross bar 3 is vertical at straight tube 21 middle parts and substantially T-shaped, cross bar 3 is made up of the transverse tube 31 and the telescopic guide post of being located in the transverse tube 31 32 of hollow, one can manually rotate and screws bolt 33 and vertically be arranged in the screw on transverse tube 31 walls and offset with guide post 32, can telescopically be arranged in the transverse tube 31 and obtains the location by the effect guide post 32 that screws bolt 33.
4 of guide cylinders are located at guide post 32 ends, and guide cylinder 4 is used for guiding and puts nail bit head 5, and putting nail bit head 5 can external common drill bit handle, and guide cylinder 4 is 45 ° of acute angles with guide post 32.Because guide cylinder 4 is fixed with guide post 2 both angles, can guarantee to put nail bit head 5 and not invade canalis spinalis, screw is inserted in vertebral plate, improves the safety of putting nail accuracy and operation.
With reference to shown in Figure 3, the state diagram during for the application of present embodiment.Present embodiment is arranged on the dentata bone 6, implements to put nail bit head 5 positioning and guidings.
Parts in the present embodiment all adopt stainless steel material to make, and wherein, transverse tube 31 diameters are 5.0mm, length is 30.0mm, and straight tube 21 diameters are 5.0mm, and length is 30.0mm, guide cylinder 4 diameters are 4.0mm, length is 30.0mm, and putting nail bit head 5 diameters is 3.5mm, and length is 50.0mm, handle 1 diameter is 4.5mm, length is 40.0mm, and the length of positioning needle 22 and guide post 32 can be selected more freely, but is good with 30～50mm.
Claims (6)
1, a kind of lamina of axis screw is put the nail guider, it is characterized in that comprising montant and cross bar, described montant has and is used for localized pointed end, and described cross bar is vertical at described montant middle part and T-shaped substantially, and described crossbar end has one and is used for the guide cylinder that opposed nail bit head leads.
2, lamina of axis screw according to claim 1 is put the nail guider, it is characterized in that described guide cylinder and described cross bar are an acute angle.
3, lamina of axis screw according to claim 2 is put the nail guider, it is characterized in that described guide cylinder and described cross bar are 45 ° of acute angles.
4, put the nail guider according to the described lamina of axis screw of arbitrary claim in the claim 1 to 3, it is characterized in that described montant is made up of the straight tube and the telescopic positioning needle of being located in the straight tube of hollow, one regulates bolt laterally is arranged in the screw on the described straight pipe wall and offsets with described positioning needle.
5, put the nail guider according to the described lamina of axis screw of arbitrary claim in the claim 1 to 3, it is characterized in that described cross bar is made up of the transverse tube and the telescopic guide post of being located in the transverse tube of hollow, described guide cylinder then is located at described guide post end, and one screws bolt vertically is arranged in the screw on the described transverse tube wall and offsets with described guide post.
6, put the nail guider according to the described lamina of axis screw of arbitrary claim in the claim 1 to 3, it is characterized in that described montant top laterally is provided with a handle of being convenient to the application of force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201695633U CN201320214Y (en) | 2008-12-05 | 2008-12-05 | Axis laminar screw arranging guider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201695633U CN201320214Y (en) | 2008-12-05 | 2008-12-05 | Axis laminar screw arranging guider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320214Y true CN201320214Y (en) | 2009-10-07 |
Family
ID=41157603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201695633U Expired - Fee Related CN201320214Y (en) | 2008-12-05 | 2008-12-05 | Axis laminar screw arranging guider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201320214Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961068A (en) * | 2016-10-20 | 2018-04-27 | 练克俭 | A kind of parallel angle guider used in internal fixation of fracture |
-
2008
- 2008-12-05 CN CNU2008201695633U patent/CN201320214Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961068A (en) * | 2016-10-20 | 2018-04-27 | 练克俭 | A kind of parallel angle guider used in internal fixation of fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20101205 |