CN202223334U - Spinal screw feeder - Google Patents
Spinal screw feeder Download PDFInfo
- Publication number
- CN202223334U CN202223334U CN2011203502694U CN201120350269U CN202223334U CN 202223334 U CN202223334 U CN 202223334U CN 2011203502694 U CN2011203502694 U CN 2011203502694U CN 201120350269 U CN201120350269 U CN 201120350269U CN 202223334 U CN202223334 U CN 202223334U
- Authority
- CN
- China
- Prior art keywords
- rod
- con
- turncap
- sleeve
- slide block
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a spinal screw feeder, which comprises a fixed screw connecting rod, wherein the fixed screw connecting rod comprises a connecting rod body; a screw feeding head is fixed at one end of the connecting rod body; a connecting rod hand shank is fixed at the other end of the connecting rod body; a sleeve is movably sleeved on the connecting rod body; a clamping ring is arranged on the sleeve; a turncap is fixed at one end of the sleeve, which is close to the connecting rod hand shank; a hand shank is movably sleeved on the sleeve; a screw thread is formed on the end part of the sleeve, which is close to the screw feeding head; and a locking mechanism for locking the turncap and the connecting rod body is arranged on the connecting rod body on the outer end part of the turncap. The spinal screw feeder has the advantages that: as the locking mechanism is arranged on the connecting rod body, the connecting rod body rotates to drive the sleeve to rotate, and the phenomenon that the sleeve and a pedicle screw are loosened is avoided; therefore, the safety coefficient of a surgery is increased greatly. The spinal screw feeder can be widely applied to fixing of the pedicle screw in a bar nailing system.
Description
Technical field
This utility model relates to the internal fixation of spine apparatus field that operative treatment is used, and is specifically related to be used for fixing on the spinal screw of spinal stabilization system follow closely device.
Background technology
The spinal vertebral pathological changes is puzzlement people's commonly encountered diseases and a frequently-occurring disease, and the main method of treating this kind disease is that the spinal column lesion resection is carried out in operation, carries out column reconstruction then.Usually need on spinal column, use spinal stabilization system to carry out the vertebral body internal fixation in this operation, spinal stabilization system be commonly called as nail-stick system.Described nail-stick system structure comprises: the two ends of spinal rod are separately installed with pedicle nail.On spinal column, during the staple bar system, needing to use specific purpose tool---the nail device fixes pedicle nail on the spinal screw.Follow closely device on the present employed spinal screw, its structure comprises: the staple connecting rod, and the staple connecting rod comprises con-rod only; One end of con-rod only is set with ailhead; The other end of con-rod only is set with link rod handle, is movably installed with sleeve on the con-rod only, and sleeve is provided with collar; Sleeve is set with turncap near an end of link rod handle; Turncap also movable set is movably installed with handle on the sleeve between collar and the turncap on con-rod only, sleeve is provided with screw thread near the end of a side of last ailhead.During use; Last ailhead is put into " U " shape groove of pedicle nail, and one holds handle, turns turncap on the other hand; Owing to be provided with the screw thread that is used with sleeve ends in the U-lag of pedicle nail; Rotate turncap like this sleeve and pedicle nail are fixedly finished, and then the pivot link handle, make ailhead drive the pedicle nail co-rotation and be fixed on vertebral body and go up corresponding position.Follow closely device on the spinal screw of said structure; Because in use, the hands of holding handle tends to apply a thrust to sleeve unawares, makes sleeve and handle tightly fit together and stops relatively not changeing along with handle; In the pivot link handle, can produce the counter-rotating of sleeve and pedicle nail like this; Thereby make to be threaded looseningly on pedicle nail and the sleeve, cause ailhead to be difficult to carry out the work of stable fixedly pedicle nail, increased the danger coefficient of operation.
The utility model content
A kind of when last nail, can not the causing that provide of the problem that this utility model need solve followed closely device on pedicle nail and the telescopic loosening spinal screw that is threaded.
For addressing the above problem, this utility model is realized through following technical scheme.
Follow closely device on the spinal screw, comprise the staple connecting rod, the staple connecting rod comprises con-rod only; One end of con-rod only is set with ailhead, and the other end of con-rod only is set with link rod handle, is movably installed with sleeve on the con-rod only; Sleeve is provided with collar, and sleeve is set with turncap near an end of link rod handle, turncap also movable set on con-rod only; On the sleeve between collar and the turncap, be movably installed with handle, sleeve is provided with screw thread near the end of a side of last ailhead, and the con-rod only of turncap outer end is provided with locking mechanism; The structure of described locking mechanism is: slide block, slide block are provided with the slide block through hole vertically, and a side of slide block offers lock slots; Described lock slots communicates with the slide block through hole, is disposed with spring and lock dog in the lock slots from the inside to the outside, offers the lock dog through hole on the described lock dog; Slide block and lock dog are sleeved on the con-rod only of turncap outer end through through hole separately, described lock dog ability lock link body; Described turncap outer face is provided with latch, also is provided with latch on the described slide block inner side end, and turncap and slide block are meshing with each other fixing through latch separately.
Further; Follow closely device on the aforesaid spinal screw; Wherein, the concrete structure of described lock dog and con-rod only locking is: the lock dog through hole to be shaped as near spring one side be square opening, the outside end of square opening is an arc-shaped hole; Offer groove on one section con-rod only of described installation slide block; The outer surface of the turncap relative with groove and the opposite side of the con-rod only between the link rod handle is a flat segments, and the height of described square opening is greater than the height of groove segments con-rod only and less than the height of the con-rod only beyond the groove, the diameter of described arc-shaped hole is greater than the height of the con-rod only beyond the groove; And after turncap and the slide block engages fixed, lock dog is stuck in the groove.
The utility model has the advantages that: after being provided with locking mechanism on the con-rod only; When link rod handle rotates; Locking mechanism is locking bushing and con-rod only simultaneously; Drive sleeve simultaneously when con-rod only rotates like this and rotate together, effectively avoided because of the relative counter-rotating of sleeve back, caused sleeve and the loosening situation generation of pedicle nail, improved the safety coefficient of performing the operation greatly with the pedicle nail generation.
Description of drawings
Fig. 1 is a nail device structural representation on the described spinal screw of this utility model.
Fig. 2 is an A-A schematic cross-section among Fig. 1.
Fig. 3 is the perspective view of the slide block described in this utility model.
Fig. 4 is the described staple connecting rod of a this utility model profile sketch map.
Fig. 5 is a C-C schematic cross-section among Fig. 4.
Fig. 6 is a B-B schematic cross-section among Fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment this utility model is done further to specify.
As shown in Figure 1, follow closely device on the spinal screw, comprise the staple connecting rod; The staple connecting rod comprises con-rod only 1, and an end of con-rod only 1 is set with ailhead 2, and the other end of con-rod only 1 is set with link rod handle 9; Be movably installed with sleeve 3 on the con-rod only 1, sleeve 3 is provided with collar 31, and sleeve 3 is set with turncap 4 near an end of link rod handle 2; Turncap 4 also movable set is movably installed with handle 5 on the sleeve 3 between collar 31 and the turncap 4 on con-rod only 1, sleeve 3 is provided with screw thread 32 near the end of a side of last ailhead 2; The con-rod only 1 of turncap 4 outer ends is provided with locking mechanism, and like Fig. 2, shown in Figure 3, the structure of described locking mechanism is: slide block 6; Slide block 6 is provided with slide block through hole 61 vertically, and a side of slide block 6 offers lock slots 62, and described lock slots 62 communicates with slide block through hole 61; Be disposed with spring 7 and lock dog 8 in the lock slots 62 from the inside to the outside; Offer lock dog through hole 81 on the described lock dog 8, slide block 6 and lock dog 8 through hole through separately respectively are sleeved on the con-rod only 1 of turncap 4 outer ends, and described lock dog 8 can lock link bodies 1; Described turncap 4 outer faces are provided with latch, also are provided with latch 63 on described slide block 6 inner side ends, and turncap 4 and slide block 6 are meshing with each other fixing through latch separately.Described lock dog 8 with the concrete structure of con-rod only 1 locking is: as shown in Figure 2; Lock dog through hole 81 to be shaped as near spring one side be square opening; The outside end of square opening is an arc-shaped hole; Like Fig. 4, Fig. 5, shown in Figure 6; Offer groove 11 on one section con-rod only 1 of described installation slide block 6; The outer surface of the turncap 4 relative with groove 11 and the opposite side of the con-rod only 1 between the link rod handle 2 is a flat segments, and the height of the square opening on the described lock dog through hole 81 is greater than the height of 11 sections con-rod onlys 1 of groove and less than the height of the con-rod only 1 beyond the groove 11, the diameter of the arc-shaped hole on the described lock dog through hole 81 is greater than the height of the con-rod only 1 beyond the groove 11; And after turncap 4 and slide block 6 engages fixed, tightly being stuck in the groove 11 of lock dog 8, lock dog 8 just can pass through square opening with con-rod only 1 and groove 11 lock each other like this.In the practical application, lock dog 8 can also lock through other similar structure with con-rod only 1 each other, and these technique variation all should belong to the protection domain of this utility model.
During last nail, last ailhead 2 is put into " U " shape groove of pedicle nail, inwardly push lock dog 8 then, con-rod only 1 is got in the arc-shaped hole, outside moving slider 6 is separated from slide block 6 and turncap 4 again.One hold handle 5 then; On the other hand rotate turncap 4, the screw thread 32 of sleeve 3 one ends and the screw thread in pedicle nail " U " the shape groove are fixed, then slide block 6 is shifted to turncap 4 latch and the latch 63 on the slide block 6 on the turncap 4 are meshing with each other; Fall into groove 11 until lock dog 8; Lock dog 8 outwards ejected until con-rod only 1 and got in the square opening under the effect of spring 7 this moment, and lock dog 8 has just fixed with each other with the staple connecting rod like this; Whole staple connecting rod and sleeve 3, turncap 4,6 one-tenth of slide blocks are as a whole; And then pivot link handle 9, staple connecting rod band sleeve 3, turncap 4, slide block 6 co-rotation, and last ailhead 2 is being with the pedicle nail rotation until being screwed into the matched position of vertebral body.In this process, 3 in sleeve can not produce relative counter-rotating, has avoided causing following closely on the spinal screw device and being connected loosening situation generation with pedicle nail because of after the relative counter-rotating with the pedicle nail generation of sleeve 3, has improved the safety coefficient of performing the operation greatly.After last nail finishes, lock dog 8 is pressed, also outwards moved, the latch 63 on latch on the turncap 4 and the slide block 6 is separated from each other; Slide block 6 moves to the direction of link rod handle 9; The backward rotation turncap 4 again, and sleeve 3 and pedicle nail are thrown off, and promptly follow closely device on the retrieval spinal screw.
The utility model has the advantages that: after being provided with locking mechanism on the con-rod only; When link rod handle rotates; Locking mechanism is locking bushing and con-rod only simultaneously; Drive sleeve simultaneously when con-rod only rotates like this and rotate together, effectively avoided because of the relative counter-rotating of sleeve back, caused sleeve and the loosening situation generation of pedicle nail, improved the safety coefficient of performing the operation greatly with the pedicle nail generation.
Claims (2)
1. follow closely device on the spinal screw, comprise the staple connecting rod, the staple connecting rod comprises con-rod only; One end of con-rod only is set with ailhead, and the other end of con-rod only is set with link rod handle, is movably installed with sleeve on the con-rod only; Sleeve is provided with collar, and sleeve is set with turncap near an end of link rod handle, turncap also movable set on con-rod only; On the sleeve between collar and the turncap, be movably installed with handle, sleeve is provided with screw thread near the end of last ailhead one side, it is characterized in that: the con-rod only of turncap outer end is provided with locking mechanism; The structure of described locking mechanism is: slide block; Slide block is provided with the slide block through hole vertically, and a side of slide block offers lock slots, and described lock slots communicates with the slide block through hole; Be disposed with spring and lock dog in the lock slots from the inside to the outside; Offer the lock dog through hole on the described lock dog, slide block and lock dog are sleeved on the con-rod only of turncap outer end through through hole separately, described lock dog ability lock link body; Described turncap outer face is provided with latch, also is provided with latch on the described slide block inner side end, and turncap and slide block are meshing with each other fixing through latch separately.
2. follow closely device on the spinal screw according to claim 1; It is characterized in that: the concrete structure of described lock dog and con-rod only locking is: the lock dog through hole to be shaped as near spring one side be square opening; The outside end of square opening is an arc-shaped hole; Offer groove on one section con-rod only of described installation slide block; The outer surface of the turncap relative with groove and the opposite side of the con-rod only between the link rod handle is a flat segments, and the height of described square opening is greater than the height of groove segments con-rod only and less than the height of the con-rod only beyond the groove, the diameter of described arc-shaped hole is greater than the height of the con-rod only beyond the groove; And after turncap and the slide block engages fixed, lock dog is stuck in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203502694U CN202223334U (en) | 2011-09-19 | 2011-09-19 | Spinal screw feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203502694U CN202223334U (en) | 2011-09-19 | 2011-09-19 | Spinal screw feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202223334U true CN202223334U (en) | 2012-05-23 |
Family
ID=46073945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203502694U Withdrawn - After Issue CN202223334U (en) | 2011-09-19 | 2011-09-19 | Spinal screw feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202223334U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102379738A (en) * | 2011-09-19 | 2012-03-21 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN105997190A (en) * | 2015-03-31 | 2016-10-12 | 德普伊(爱尔兰)有限公司 | System and method for attaching surgical instrument to patient's bone |
| CN108013929A (en) * | 2018-01-03 | 2018-05-11 | 江苏荷普医疗科技股份有限公司 | The centrum-nail fastening device for preventing thread bush from turning round |
| CN109745115A (en) * | 2019-02-21 | 2019-05-14 | 江苏双羊医疗器械有限公司 | A kind of minimally invasive upper nail device of orthopaedics |
-
2011
- 2011-09-19 CN CN2011203502694U patent/CN202223334U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102379738A (en) * | 2011-09-19 | 2012-03-21 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN102379738B (en) * | 2011-09-19 | 2013-01-02 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN105997190A (en) * | 2015-03-31 | 2016-10-12 | 德普伊(爱尔兰)有限公司 | System and method for attaching surgical instrument to patient's bone |
| US10603094B2 (en) | 2015-03-31 | 2020-03-31 | Depuy Ireland Unlimited Company | System and method for attaching a surgical instrument to a patient's bone |
| US11376055B2 (en) | 2015-03-31 | 2022-07-05 | Depuy Ireland Unlimited Company | System and method for attaching a surgical instrument to a patient's bone |
| CN108013929A (en) * | 2018-01-03 | 2018-05-11 | 江苏荷普医疗科技股份有限公司 | The centrum-nail fastening device for preventing thread bush from turning round |
| CN109745115A (en) * | 2019-02-21 | 2019-05-14 | 江苏双羊医疗器械有限公司 | A kind of minimally invasive upper nail device of orthopaedics |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102379738B (en) | Spinal screw nailing device | |
| CN202223334U (en) | Spinal screw feeder | |
| JP2006508755A5 (en) | ||
| EP2804997B1 (en) | Screw for composite/plastic materials | |
| CN204379427U (en) | A kind of nail-fetching device for orthopaedics | |
| JP2012511997A5 (en) | ||
| CN105310759B (en) | Steel needle bending and scraping method and bending and scraping device | |
| CN106859749A (en) | Homing position type external fixing rack | |
| CN101332112A (en) | Micro-wound bone taking device | |
| US10349985B1 (en) | Universal pedicle screw removal device and related methods | |
| CN205054421U (en) | Nail extractor for department of orthopaedics | |
| CN205041518U (en) | It puts with getting to bind conveniently to master orthopedics of dynamics | |
| CN205215350U (en) | Nail taking device used in orthopaedics department | |
| CN203677240U (en) | Nail taking device used in orthopaedics department | |
| CN207152655U (en) | A kind of universal handle for clamping neurosurgery microinstrument | |
| CN201930059U (en) | Vertebral pedicle screw | |
| CN201642294U (en) | Orthopedics traction nail | |
| CN204049827U (en) | A kind of spanner of Collapsible | |
| CN101548907B (en) | Backward-forward direction self-locking loose-proof bone nail | |
| CN213075890U (en) | Nail feeding device for pressurized hollow nails | |
| CN208822905U (en) | A kind of neurosurgical operation instrument | |
| CN2285638Y (en) | Repositor for internal fixation of fracture of tubular bone | |
| CN216797752U (en) | Vertebral lamina rongeur | |
| CN211583436U (en) | Distal radius spreader | |
| CN210307971U (en) | Chinese medicine internal medicine moxa stick dissection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |