CN204951121U - Reverse pedicle of vertebral arch screw internal fixation auxiliary device of lower cervical vertebra - Google Patents
Reverse pedicle of vertebral arch screw internal fixation auxiliary device of lower cervical vertebra Download PDFInfo
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- CN204951121U CN204951121U CN201520732517.XU CN201520732517U CN204951121U CN 204951121 U CN204951121 U CN 204951121U CN 201520732517 U CN201520732517 U CN 201520732517U CN 204951121 U CN204951121 U CN 204951121U
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- China
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- cervical vertebra
- positioning catheter
- auxiliary device
- pedicle screw
- internal fixtion
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Abstract
The utility model relates to a reverse pedicle of vertebral arch screw internal fixation auxiliary device of lower cervical vertebra, include that the locating plate that pastes clothes with lower cervical vertebra centrum anatomy form establishes the location pipe of the leading -in passageway of screw in with, be provided with a plurality of universal locking holes on the locating plate, the one end of location pipe locks and makes the leading -in passageway of screw relative with universal locking hole for the keyed end and through this keyed end and universal locking hole. The utility model discloses a locating plate pinpoints with the neeld point and the needle angle of location pipe to lower cervical vertebra pedicle of vertebral arch screw, moreover, the steam generator is simple in structure, and convenient for operation, universal locking hole on the locating plate is connected with the keyed end of location pipe, can not only the multi -angle adjust needle angle, and can pinpoint for the reverse pedicle of vertebral arch screw implantation of lower cervical vertebra provides, the security that the reverse pedicle of vertebral arch screw of last cervical vertebra was implanted has improved, the safety guarantee is provided for popularizing down before the cervical vertebra way pedicle of vertebral arch screw in clinically application.
Description
Technical field
This utility model relates to bone surgery auxiliary device, particularly relates to a kind of Cervical vertebra reverse pedicle screw internal fixtion auxiliary device.
Background technology
Pedicle for cervical vertebra arch is part the firmest in cervical vertebra, and Cervical vertebra pedicle screw plays an important role in the treatments such as cervical spinal trauma reset, deformity, reconstruction.The reverse pedicle screw of Cervical vertebra is fixed both has the strong stable of pedicle screw internal fixtion, can solve again the compressing of spinal cord and nerve roots in cervical spinal front, therefore extensive use in cervical operation.
When performing the operation, rely on experience estimation Distance geometry angle during operation technique completely, error is comparatively large, restive, has occurred that many pedicle screws assist the patent documentation putting spike devices open for this reason.As the Chinese utility model patent " a kind of Auxillary apparatus for pediculus arcus vertebrae nail fixing operation " that the patent No. is ZL97244886.1 (Authorization Notice No. is CN2311241Y), auxiliary device volume in this patent is larger, range of accommodation is single, can only in planar range adjusting angle, and cannot to fix the reverse pedicle screw of Cervical vertebra.And for example the patent No. is the Chinese utility model patent " guider for lower cervical vertebra anterior vertebral pedicle screw implantation " of ZL201020121268.8 (Authorization Notice No. is CN201624768U), auxiliary device volume in this patent is large, heavy, cannot lock, instability, range of application is narrower.
In addition, the reverse pedicle screw of Cervical vertebra is obviously different from other pedicle screws, is not exclusively used in the guider of this technical operation in prior art.
Summary of the invention
Technical problem to be solved in the utility model be provide for prior art that a kind of structure is simple, the large and Cervical vertebra of the accurate positioning reverse pedicle screw internal fixtion auxiliary device of range of accommodation.
This utility model solves the problems of the technologies described above adopted technical scheme: a kind of Cervical vertebra reverse pedicle screw internal fixtion auxiliary device, it is characterized in that, comprise and the location-plate of Cervical vertebra vertebral anatomy form docile and the interior positioning catheter establishing screw introduction channel, described location-plate is provided with multiple universal lock hole, one end of described positioning catheter is keyed end, and positioning catheter to be locked with universal lock hole by this keyed end and makes screw introduction channel relative with universal lock hole.
Locking between keyed end and universal lock hole realizes by various ways, realize the multi-angle adjustment in positioning catheter direction preferably for ease of assembling simultaneously, as preferably, the outer peripheral face of described keyed end is provided with the first external screw thread, accordingly, described universal lock hole is sphere hole, is embedded with the retainer ring matched with it in this sphere hole, and this retainer ring is threaded with keyed end.
Operate for ease of hand-held positioning catheter, simultaneously auxiliary firm to positioning catheter, above-mentioned Cervical vertebra reverse pedicle screw internal fixtion auxiliary device also comprises an operating grip, and this operating grip and positioning catheter removably connect.
The specific implementation structure of operating grip and positioning catheter Detachable connection structure can have multiple, as buckle connects, be threaded, for ease of operating in art, this operating grip is threaded with positioning catheter, particularly, one end of described operating grip is provided with the adapter sleeve inserted for positioning catheter, under described positioning catheter and adapter sleeve connection status, the keyed end of this positioning catheter exposes, and the portion perimeter face of positioning catheter is threaded with at least part of inner peripheral surface of adapter sleeve simultaneously.
For ease of making guide thimble be connected with adapter sleeve by turn guide thimble, the other end of described positioning catheter radial direction extends and forms Handheld Division, and under described positioning catheter and adapter sleeve connection status, this Handheld Division exposes to adapter sleeve.
Further, the outer peripheral face of described Handheld Division is provided with slip-resistant texture.
For making operating grip and positioning catheter be connected firmly, thus whole apparatus structure is stablized, described positioning catheter has the connecting portion be threaded with adapter sleeve between keyed end with Handheld Division, and the radius of this connecting portion is greater than keyed end.
Further, the profile that described adapter sleeve supplies the accommodating inner chamber of positioning catheter and positioning catheter to be placed in this inner chamber part matches.
Carry out temporary fixed for ease of inserting Kirschner wire in operation process to location-plate, ensure that location-plate place surface of bone blood is for smooth and easy, described location-plate is provided with interim locating hole simultaneously.
Compared with prior art, the utility model has the advantage of: by location-plate and positioning catheter, the entry point of Cervical vertebra pedicle screw and needle angle are accurately located, structure is simple, easy to operate, universal lock hole on location-plate is connected with the keyed end of positioning catheter, multi-angle can not only regulate needle angle, and accurate location can be provided for the implantation of Cervical vertebra reverse pedicle screw, improve the safety that the reverse pedicle screw of upper cervical spine is implanted, for the application clinically of universal lower cervical vertebra anterior vertebral pedicle screw provides safety guarantee.
Accompanying drawing explanation
Fig. 1 is positioning plate structure schematic diagram in this utility model embodiment;
Fig. 2 is positioning catheter structural representation in this utility model embodiment;
Fig. 3 is operating grip structural representation in this utility model embodiment;
Fig. 4 is reverse pedicle screw internal fixtion auxiliary device using state schematic diagram in this utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
As shown in figures 1-4, a kind of Cervical vertebra reverse pedicle screw internal fixtion auxiliary device, comprises location-plate 1, positioning catheter 2 and operating grip 3.Location-plate 1 and Cervical vertebra vertebral anatomy form docile, its front parallelogram in the present embodiment, side is curved, the surrounding of location-plate 1 is evenly equipped with eight universal lock holes 11, intermediate distribution has three interim locating holes 12, for Kirschner wire insertion thus location-plate 1 is located temporarily, ensure that location-plate 1 place surface of bone blood is for smooth and easy simultaneously.Herein to the description of location-plate 1 structure only for the location-plate 1 used concrete in the present embodiment, other feasible structures are also in protection domain of the present utility model.
Positioning catheter 2 is integrated part, and inside has screw and inserts passage 24, and by screw placing direction, positioning catheter 2 comprises Handheld Division 23, connecting portion 22 and keyed end 21 from top to bottom.Keyed end 21 to insert in the universal lock hole 11 of location-plate 1 and the universal lock in positioning catheter 2 and universal lock hole 11, thus makes screw introduction channel 24 relative with universal lock hole 11 and form screw and insert passage.Particularly, the outer peripheral face of keyed end 21 is provided with the first external screw thread 211, accordingly, the universal lock hole 11 in the present embodiment is sphere hole, is embedded with the retainer ring 111 matched with sphere hole in this sphere hole, and this retainer ring 111 is threaded with keyed end 21.Universal lock hole in this utility model, except structure disclosed in the present embodiment, also can use in the art that other have the pore structure of universal lock function.
Operate for ease of hand-held positioning catheter 2, the reverse pedicle screw internal fixtion of the Cervical vertebra in the present embodiment auxiliary device also comprises an operating grip 3, and operating grip 3 and positioning catheter 2 removably connect.Particularly, one end of operating grip 3 is provided with the adapter sleeve 31 inserted for positioning catheter 2, the outer peripheral face of above-mentioned connecting portion 22 is provided with the second external screw thread 221, positioning catheter 2 inserts adapter sleeve 31, hand-held portion 23 turn positioning catheter 2 and connecting portion 22 is threaded with adapter sleeve 31, and keyed end 21 is exposed.
For making the stable connection of positioning catheter 2 and adapter sleeve 31, the radius of connecting portion 22 is greater than keyed end 21, and the profile that the inner chamber 311 that adapter sleeve 31 supplies positioning catheter 2 accommodating and positioning catheter 2 are placed in this inner chamber 311 part matches.In addition, Handheld Division 23 is formed by the end radial direction extension of positioning catheter 2, and simultaneously for ease of hand-held, the outer peripheral face of Handheld Division 23 is provided with slip-resistant texture 231.
In the reverse Pedicle Screw of Cervical vertebra, location anterior midline, determining entry point, is the basis of accurately putting nail according to the direction of the reverse pedicle screw of pedicle of vertebral arch longitudinal axis determination Cervical vertebra on transverse section and sagittal plane, in the present embodiment, according to the data of preoperative measurement, determine entry point, after direction and angle, this device can be assembled according to preoperative measurement result, insert on entry point, guarantee that needle angle and Cervical vertebra reverse pedicle screw anatomical passageway is consistent.
Concrete use procedure is as follows: first, according to CT Radiological measurement data before operation in patients, to make that its connecting portion 22 is threaded with adapter sleeve 31 and keyed end 21 exposes in the adapter sleeve 31 of positioning catheter 2 update handle 3, complete the assembling of positioning catheter 2 and operating grip 3.Then, regulate orientation angle, the keyed end 21 of positioning catheter 2 is locked with the universal lock hole 11 on location-plate 1, completes the assembling of positioning catheter 2 and location-plate 1.Finally, the device assembled is placed in operation place of patient's strength vertebra, carries out surgical drill exactly, guarantee accurately to insert the reverse pedicle screw of Cervical vertebra.
Claims (9)
1. a Cervical vertebra reverse pedicle screw internal fixtion auxiliary device, it is characterized in that, comprise and the location-plate (1) of Cervical vertebra vertebral anatomy form docile and the interior positioning catheter (2) establishing screw introduction channel (24), described location-plate (1) is provided with multiple universal lock hole (11), one end of described positioning catheter (2) is keyed end (21), and this positioning catheter (2) to be locked with universal lock hole (11) by this keyed end (21) and makes screw introduction channel (24) relative with universal lock hole (11).
2. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 1, it is characterized in that, the outer peripheral face of described keyed end (21) is provided with the first external screw thread (211), accordingly, described universal lock hole (11) is sphere hole, be embedded with the retainer ring (111) matched with it in this sphere hole, this retainer ring (111) is threaded with keyed end (21).
3. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 1, it is characterized in that, also comprise one for the operating grip (3) of clamping position conduit (2), this operating grip (3) and positioning catheter (2) removably connect.
4. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 3, it is characterized in that, one end of described operating grip (3) is provided with the adapter sleeve (31) inserted for positioning catheter (2), described positioning catheter (2) is with under adapter sleeve (31) connection status, the keyed end (21) of this positioning catheter (2) exposes, and the portion perimeter face of positioning catheter (2) is threaded with at least part of inner peripheral surface of adapter sleeve (31) simultaneously.
5. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 4, it is characterized in that, the other end radial direction of described positioning catheter (2) extends and forms Handheld Division (23), described positioning catheter (2) is with under adapter sleeve (31) connection status, and this Handheld Division (23) expose to adapter sleeve (31).
6. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 5, it is characterized in that, the outer peripheral face of described Handheld Division (23) is provided with slip-resistant texture (231).
7. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 5, it is characterized in that, described positioning catheter (2) has the connecting portion (22) be threaded with adapter sleeve (31) between keyed end (21) with Handheld Division (23), and the radius of this connecting portion (22) is greater than keyed end (21).
8. Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as claimed in claim 7, it is characterized in that, described adapter sleeve (31) is placed in this inner chamber (311) profile partly for the inner chamber (311) that positioning catheter (2) is accommodating with positioning catheter (2) and matches.
9. the Cervical vertebra reverse pedicle screw internal fixtion auxiliary device as described in claim arbitrary in claim 1 ~ 8, it is characterized in that, described location-plate (1) is provided with interim locating hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520732517.XU CN204951121U (en) | 2015-09-21 | 2015-09-21 | Reverse pedicle of vertebral arch screw internal fixation auxiliary device of lower cervical vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520732517.XU CN204951121U (en) | 2015-09-21 | 2015-09-21 | Reverse pedicle of vertebral arch screw internal fixation auxiliary device of lower cervical vertebra |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204951121U true CN204951121U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520732517.XU Expired - Fee Related CN204951121U (en) | 2015-09-21 | 2015-09-21 | Reverse pedicle of vertebral arch screw internal fixation auxiliary device of lower cervical vertebra |
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| Country | Link |
|---|---|
| CN (1) | CN204951121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107260286A (en) * | 2017-07-31 | 2017-10-20 | 自贡市第四人民医院 | Minimally invasive pedicle screw guider outside a kind of detachable skin of combination perspective |
-
2015
- 2015-09-21 CN CN201520732517.XU patent/CN204951121U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107260286A (en) * | 2017-07-31 | 2017-10-20 | 自贡市第四人民医院 | Minimally invasive pedicle screw guider outside a kind of detachable skin of combination perspective |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |