CN102379738B - Spinal screw nailing device - Google Patents
Spinal screw nailing device Download PDFInfo
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- CN102379738B CN102379738B CN 201110277639 CN201110277639A CN102379738B CN 102379738 B CN102379738 B CN 102379738B CN 201110277639 CN201110277639 CN 201110277639 CN 201110277639 A CN201110277639 A CN 201110277639A CN 102379738 B CN102379738 B CN 102379738B
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- rod
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- sleeve
- turncap
- slide block
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Abstract
The invention discloses a spinal screw nailing device, comprising a fixing nail connection rod, wherein the fixing nail connection rod comprises a connection rod main body. One end of the fixing nail connection rod is fixedly provided with a nailing head, and the other end of the connection rod main body is fixedly connected with a connection rod handle. A sleeve is movably sleeved on the connection rod main body, and a clamp ring is arranged on the sleeve. One end of the sleeve closed to the connection rod handle is fixedly provided with a turn cap, a handle is movably sleeved on the sleeve, the end part of the sleeve closed to the nailing head is provided with threads, and the connection rod main body on the outer end part of the turn cap is provided with a locking mechanism which is used for interlocking the turn cap with the connection rod main body. The invention has the following advantages: after the connection rod main body is provided with the locking mechanism, the connection rod main body can drive the sleeve to rotate while rotates, so the sleeve cannot be loosened from the pedicle screw, and the safety coefficient of operations is greatly improved. The invention can be widely used for fixing the pedicle screws in nail-bar systems.
Description
Technical field
The present invention relates to the fixing equipment in spine field that operative treatment is used, be specifically related to the spinal screw feeder for the spinal fixation stabilisation systems.
Background technology
The spinal vertebral pathological changes is puzzlement people's commonly encountered diseases and frequently-occurring disease, and the main method for the treatment of this kind disease is that the spinal column lesion resection is carried out in operation, then carries out column reconstruction.Usually it is fixing to use spinal stabilization system to carry out in the vertebral body at spinal column in this operation, and spinal stabilization system is 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, need to use that specific purpose tool---spinal screw feeder fixes pedicle nail.Present employed spinal screw feeder, its structure comprises: the staple connecting rod, the staple connecting rod comprises con-rod only, one end of con-rod only is fixedly installed ailhead, the other end of con-rod only is fixedly installed link rod handle, be movably installed with sleeve on the con-rod only, be provided with collar on the sleeve, sleeve is fixedly installed turncap near an end of link rod handle, turncap also movable set on con-rod only, sleeve between collar and turncap is movably installed with handle, and sleeve is provided with screw thread on the end near a side of upper ailhead.During use, upper ailhead is put into " U " shape groove of pedicle nail, one holds handle, turn on the other hand turncap, owing to be provided with the screw thread that is used with sleeve ends in the U-lag of pedicle nail, rotate like this turncap and make sleeve and pedicle nail fixing complete, and then the pivot link handle, make ailhead drive pedicle nail and jointly rotate and be fixed on vertebral body and go up corresponding position.The spinal screw feeder of said structure, because in use, the hands of holding handle tends to apply a thrust to sleeve unawares, so that sleeve tightly fits together with handle and relative stopping not turn along with handle, in the pivot link handle, can produce like this counter-rotating of sleeve and pedicle nail, 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.
Summary of the invention
Providing of the problem that the present invention need to solve a kind ofly can not cause the loosening spinal screw feeder of pedicle nail and being threaded of sleeve in when nail.
For addressing the above problem, the present invention is achieved through the following technical solutions.
Spinal screw feeder, comprise the staple connecting rod, the staple connecting rod comprises con-rod only, one end of con-rod only is fixedly installed ailhead, the other end of con-rod only is fixedly installed link rod handle, be movably installed with sleeve on the con-rod only, be provided with collar on the sleeve, sleeve is fixedly installed turncap near an end of link rod handle, turncap also movable set on con-rod only, sleeve between collar and turncap is movably installed with handle, and sleeve is provided with screw thread on the end near a side of upper ailhead, and the con-rod only in the 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 from the inside to the outside spring and lock dog in the lock slots, 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 by through hole separately, described lock dog energy lock link body; Described turncap is provided with latch on the outer face, also is provided with latch on the described slide block inner side end, and turncap and slide block are intermeshing fixing by latch separately.
Further, aforesaid spinal screw feeder, 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 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 flat segments, the height of described square opening is greater than the height of groove section 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 slide block engagement were fixing, lock dog was stuck in the groove.
Advantage of the present invention is: after con-rod only is provided with locking mechanism, when link rod handle rotates, locking mechanism is locking bushing and con-rod only simultaneously, be with simultaneously moving sleeve to rotate together when con-rod only rotates like this, effectively avoided greatly having improved the safety coefficient of performing the operation because the relative counter-rotating with the pedicle nail generation of sleeve situation rear, that cause sleeve and pedicle nail to become flexible occurs.
Description of drawings
Fig. 1 is spinal screw feeder structural representation of the present invention.
Fig. 2 is A-A schematic cross-section among Fig. 1.
Fig. 3 is the perspective view of the slide block described in the present invention.
Fig. 4 is staple connecting rod profile sketch map of the present invention.
Fig. 5 is C-C schematic cross-section among Fig. 4.
Fig. 6 is B-B schematic cross-section among Fig. 4.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, spinal screw feeder, comprise the staple connecting rod, the staple connecting rod comprises con-rod only 1, one end of con-rod only 1 is fixedly installed ailhead 2, the other end of con-rod only 1 is fixedly installed link rod handle 9, be movably installed with sleeve 3 on the con-rod only 1, be provided with collar 31 on the sleeve 3, sleeve 3 is fixedly installed turncap 4 near an end of link rod handle 2, turncap 4 also movable set on con-rod only 1, sleeve 3 between collar 31 and turncap 4 is movably installed with handle 5, sleeve 3 is provided with screw thread 32 on the end near a side of upper ailhead 2, con-rod only 1 in turncap 4 outer ends is provided with locking mechanism, such as 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, one side of slide block 6 offers lock slots 62, described lock slots 62 communicates with slide block through hole 61, be disposed with from the inside to the outside spring 7 and lock dog 8 in the lock slots 62, offer lock dog through hole 81 on the described lock dog 8, slide block 6 and the lock dog 8 respectively through hole by separately 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 is provided with latch on 4 outer faces, also is provided with latch 63 on described slide block 6 inner side ends, and turncap 4 is intermeshing fixing by latch separately with slide block 6.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 be shaped as near spring one side be square opening, the outside end of square opening is arc-shaped hole, such as 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 flat segments, 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 is fixing with slide block 6 engagements, tightly being stuck in the groove 11 of lock dog 8, lock dog 8 and con-rod only 1 just can lock mutually by square opening and groove 11 like this.In the practical application, lock dog 8 can also lock by other similar structure mutually to con-rod only 1, and these technique variation all should belong to protection scope of the present invention.
During upper nail, upper ailhead 2 is put into " U " shape groove of pedicle nail, then inwardly press lock dog 8, con-rod only 1 is entered in the arc-shaped hole, outside moving slider 6 is separated from slide block 6 and turncap 4 again.Then one hold handle 5, rotate on the other hand turncap 4, the screw thread 32 of sleeve 3 one ends is fixed with the screw thread in pedicle nail " U " the shape groove, then slide block 6 being shifted to turncap 4 makes latch and the latch 63 on the slide block 6 on the turncap 4 intermeshing, until lock dog 8 falls into groove 11, this moment is under the effect of spring 7, lock dog 8 outwards ejects until con-rod only 1 enters in the square opening, 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, the staple connecting rod is with sleeve 3, turncap 4, slide block 6 rotates jointly, and upper ailhead 2 rotates until be screwed into the matched position of vertebral body with pedicle nail.In this process, 3 in sleeve can not produce relative counter-rotating, has avoided because of after relative counter-rotating occurs sleeve 3 and pedicle nail, and the situation generation that causes spinal screw feeder to be connected with pedicle nail becoming flexible has improved the safety coefficient of performing the operation greatly.After upper nail finishes, lock dog 8 is pressed, also outwards moved, the latch 63 on the 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, sleeve 3 and pedicle nail thrown off, i.e. the retrieval spinal screw feeder.
Advantage of the present invention is: after con-rod only is provided with locking mechanism, when link rod handle rotates, locking mechanism is locking bushing and con-rod only simultaneously, be with simultaneously moving sleeve to rotate together when con-rod only rotates like this, effectively avoided greatly having improved the safety coefficient of performing the operation because the relative counter-rotating with the pedicle nail generation of sleeve situation rear, that cause sleeve and pedicle nail to become flexible occurs.
Claims (2)
1. spinal screw feeder, comprise the staple connecting rod, the staple connecting rod comprises con-rod only, one end of con-rod only is fixedly installed ailhead, the other end of con-rod only is fixedly installed link rod handle, be movably installed with sleeve on the con-rod only, be provided with collar on the sleeve, sleeve is fixedly installed turncap near an end of link rod handle, turncap also movable set on con-rod only, sleeve between collar and turncap is movably installed with handle, sleeve is provided with screw thread near on the end of upper ailhead one side, it is characterized in that: the con-rod only in the 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, one side of slide block offers lock slots, described lock slots communicates with the slide block through hole, be disposed with from the inside to the outside spring and lock dog in the lock slots, 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 by through hole separately, described lock dog energy lock link body; Described turncap is provided with latch on the outer face, also is provided with latch on the described slide block inner side end, and turncap and slide block are intermeshing fixing by latch separately.
2. spinal screw feeder 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 arc-shaped hole, be set with by through hole on one section con-rod only of slide block and offered groove, the outer surface of the turncap relative with groove and the opposite side of the con-rod only between the link rod handle is flat segments, the height of described square opening is greater than the height of groove section 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 slide block engagement were fixing, lock dog was stuck in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110277639 CN102379738B (en) | 2011-09-19 | 2011-09-19 | Spinal screw nailing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110277639 CN102379738B (en) | 2011-09-19 | 2011-09-19 | Spinal screw nailing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102379738A CN102379738A (en) | 2012-03-21 |
| CN102379738B true CN102379738B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110277639 Active CN102379738B (en) | 2011-09-19 | 2011-09-19 | Spinal screw nailing device |
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| Country | Link |
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| CN (1) | CN102379738B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103271763B (en) * | 2013-05-22 | 2014-12-24 | 苏州爱得科技发展有限公司 | Combined replacing type Stryker nail installing device |
| CN109199566B (en) * | 2017-07-05 | 2023-12-01 | 北京纳通医学科技研究院有限公司 | Pedicle screw feeding device |
| 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 |
| CN113017816B (en) * | 2021-02-26 | 2022-06-14 | 北京市春立正达医疗器械股份有限公司 | Novel knee joint nail puller |
| CN113288395B (en) * | 2021-05-21 | 2022-08-16 | 山东威高骨科材料股份有限公司 | Multifunctional screw driver for pedicle screws |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626448Y (en) * | 2003-07-18 | 2004-07-21 | 王平 | Broken bolt extractor for orthopaedics |
| CN101416904A (en) * | 2008-11-13 | 2009-04-29 | 苏州市兴达医械制造有限公司 | Centrum-nail fastening device |
| CN202223334U (en) * | 2011-09-19 | 2012-05-23 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw feeder |
-
2011
- 2011-09-19 CN CN 201110277639 patent/CN102379738B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626448Y (en) * | 2003-07-18 | 2004-07-21 | 王平 | Broken bolt extractor for orthopaedics |
| CN101416904A (en) * | 2008-11-13 | 2009-04-29 | 苏州市兴达医械制造有限公司 | Centrum-nail fastening device |
| CN202223334U (en) * | 2011-09-19 | 2012-05-23 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102379738A (en) | 2012-03-21 |
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