CN2366065Y - Multipurpose internal fixer for spinal column - Google Patents
Multipurpose internal fixer for spinal column Download PDFInfo
- Publication number
- CN2366065Y CN2366065Y CN 99227237 CN99227237U CN2366065Y CN 2366065 Y CN2366065 Y CN 2366065Y CN 99227237 CN99227237 CN 99227237 CN 99227237 U CN99227237 U CN 99227237U CN 2366065 Y CN2366065 Y CN 2366065Y
- Authority
- CN
- China
- Prior art keywords
- pedicle screw
- spinal column
- connecting rod
- multipurpose
- rod
- 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
Links
- 238000005452 bending Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 230000000399 orthopedic effect Effects 0.000 description 5
- 208000007103 Spondylolisthesis Diseases 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 206010041569 spinal fracture Diseases 0.000 description 2
- 210000000709 aorta Anatomy 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
A multipurpose spine internal fixator consists of a threaded connecting rod 4, three different pedicle screws 8, 9 and 10 and double locking nuts 5 and 7. The threaded connecting rod 4 is pre-bent to form a certain angle, the upper end of the threaded connecting rod is provided with a threaded oval rod 12 for embedding a pedicle screw 8 with a U-shaped tail part and sleeving double locking nuts 5 and 7, the lower end of the threaded connecting rod is provided with a square rod 1 for sleeving a pedicle screw 10 with a square hole 2 and an angle at the tail part, and the middle lower part of the threaded connecting rod is provided with a long round lifting hole 3 for inserting the oval lifting pedicle screw 9 at the tail part. The fixator has the advantages of good stability, three-dimensional stability, multiple purposes, simple structure, convenient operation, less wound and less complications.
Description
This utility model relates to a kind of internal fixation of spine medical apparatus and instruments, is specifically related to a kind of multipurpose spinal column internal fixation device.
When causing instability because of the lumbar-thoracic spine pathological changes, need by spinal column internal fixation device reaching three-dimensional orthopedic and fixing, at present clinically be used for pedicle pipe nipple inner fixer (Dick, Seffee, AF, RF, APF etc.) and Harrington and Lugue rod being arranged and improveing apparatus two big classes of spinal column way of escape internal fixation device.Obtained effect preferably through clinical use.But some inner fixer exists, and structure is various, purposes is single, wound is big, operation inconvenience, interference effect canalis spinalis, destroy the spinal posterior structure, and anti-rotation is not enough, jump stick is arranged and problems such as the rod that breaks.
The purpose of this utility model is to provide a kind of multipurpose spinal column internal fixation device of good stability.
This utility model is achieved in that a kind of multipurpose spinal column internal fixation device, it comprises: whorl brace rod, three different pedicle screws and the tight nut of twin-lock, whorl brace rod pre-bending is α at an angle, its upper end is threaded elliptical rod, the lower end is a square bar, the middle and lower part is opened a Long Circle and is lifted the hole, the setting-in tail end is the pedicle screw of " U " shape on its upper end elliptical rod, and tighten with the tight nut of twin-lock, the suit afterbody has the pedicle screw of square hole band angle on the square bar of lower end, and the middle and lower part lifts in the hole plug-in mounting afterbody ellipse and lifts awl nut screw.
Compare with existing spinal column internal fixation device, the utlity model has following advantage:
1, good stability, can reach three-dimensional fixation and adopt band angle whorl brace rod, the square bar part can be inserted in the square hole of below pedicle of vertebral arch vertebral screw, oval " U " shape pedicle screw of partly can packing in top, after tightening the tight nut of twin-lock, can rotate, prevent jump stick, centrifugation and nail bar effect are arranged by anti-effectively spinal column, thereby reach the three-dimensional orthopedic and fixed purpose of spinal column.
2, multipurpose: said structure is treated lumbar-thoracic spine fracture and the lumbar spondylolisthesis except that being used for smelting, behind square bar insertion square hole pedicle screw with whorl brace rod, the nut of screwing on its terminal threaded square bar promptly can be used for the spinal fracture of needs pressurization and vertebra osteotomy and adds press fit after orthopedic.
Advantages such as 3, through clinical practice, this utility model has simple in structure, easy to operate, and wound is less, multiple use, complication are few.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the C-C cutaway view of Fig. 1.
Fig. 5 is an embodiment sketch map of the present utility model.
Below in conjunction with accompanying drawing this utility model being done one describes in detail:
As shown in Figure 1, this utility model is a kind of multipurpose spinal column internal fixation device, and it is made up of whorl brace rod 4, three different vertebral arch bucket screws 8,9,10 and the tight nut 5,7 of twin-lock.Whorl brace rod 4 pre-bendings are α at an angle, and angle α is 3～5 °.
Whorl brace rod 4 upper ends are threaded elliptical rod 12, and the lower end is square bar or terminal threaded square bar 1, and the middle and lower part is opened a Long Circle and lifted hole 2.
Three different pedicle screws 8,10,9 are respectively the pedicle screw 8 that afterbody is " U " shape, and afterbody has square hole 2 band angle pedicle screws 10 and afterbody ellipse to lift pedicle screw 9.
" U " shape pedicle screw 8 is flush-mounted on the whorl brace rod 4 upper end elliptical rod 12, and 1/3 is straight shape in its " U " shape two medial surface, can rotate by anti-connecting rod; 1/3 is circular up and down, and is the two T-shape lock nuts 5,7 of angle with two pieces of front ends respectively and is screwed into, and to reach separation (compression), to prevent the jump stick effect, uses two pieces of nuts up and down at lock nut again, to strengthen above-mentioned effect.Square hole band angle pedicle screw 10 is set on the whorl brace rod 4 lower end square bars 1, after connecting rod lower end square bar inserts square hole, anti-connecting rod turning effort is arranged promptly.The nut 11 of screwing on threaded square bar promptly can be used for the spinal fracture of needs pressurization and spinal column osteotomy and adds press fit after orthopedic.Lifting pedicle screw 9 is plugged in whorl brace rod 4 middle and lower parts and lifts in the hole 3, it is slightly slightly grown than " U " shape pedicle screw 8 and square hole band angle pedicle screw 10, its afterbody is threaded ellipse, to adapt to slippage in various degree, can prevent to lift screw and slippage vertebra effectively and rotate lifting when resetting.
This spinal column internal fixation device is applicable to that smelting treats lumbar-thoracic spine fracture, lumbar spondylolisthesis, lumbar instability, vertebra osteotomy and add press fit etc. after orthopedic.
Key points for operation:
1, when putting band square hole pedicle screw, the direction of arrow should be noted, just the screw-rod angle effect can be played.
2, when putting " U " shape pedicle screw, should note keeping two pedicle screws in a straight line substantially, gradient is unsuitable excessive up and down.Otherwise will influence connecting rod by putting.
3, after the direction of attention connecting rod, square bar with the connecting rod lower end inserts in the square hole of below pedicle screw earlier, as when being inserted with resistance, can impact or adjust the depth of square hole pedicle screw a little lifting the place, hole, general connecting rod lower end square bar inserts does not have difficulty.
4, " U " shape pedicle screw is put in the connecting rod upper end, on connecting rod, can press a little sometimes, and can according to circumstances twist the two T-shape lock nuts in " U " shape below or top earlier, tighten two pieces of nuts up and down at last.
5, in the time of need pressurizeing as spinal column, in the pedicle screw, after connecting rod square pole afterbody is screwed on a nut, could begin pressurization about should earlier connecting rod being placed on.
6, according to the lumbar spondylolisthesis degree, can select the connecting rod of different angles and the square hole pedicle screw of different angles, when putting up and down pedicle screw and lifting screw, should note substantially in a straight line for 3, when putting fixedly general do not have difficult.
7, lift screw such as when long, afterbody can be cut short.Should be specifically noted that the cause because of individual variation simultaneously, pedicle screw may be oversize sometimes, can pass anterior margin of vertebral body, and the danger of damage postcava or ventral aorta is arranged.
When 8, removing this type spinal column internal fixation device, all do not have difficulty, no longer describe in detail.
Claims (4)
1, a kind of multipurpose spinal column internal fixation device, it is characterized in that it comprises: whorl brace rod (4), three different pedicle screws (8), (9), (10) and the tight nut of twin-lock (5) (7), whorl brace rod (4) pre-bending is α at an angle, its upper end is threaded elliptical rod (12), the lower end is square bar (1), the middle and lower part is opened a Long Circle and is lifted hole (3), its upper end elliptical rod (12) goes up the pedicle screw (8) that the setting-in tail end is " U " shape, and tighten with the tight nut of twin-lock (5) (7), lower end square bar (1) is gone up the pedicle screw (10) that the suit afterbody has square hole (2) band angle, and the middle and lower part lifts hole (3) interior plug-in mounting afterbody ellipse and lifts pedicle screw (9).
2, a kind of multipurpose spinal column internal fixation device according to claim 1 is characterized in that square bar (1) end is threaded and installs a nut (11) additional.
3, a kind of multipurpose spinal column internal fixation device according to claim 1 is characterized in that angle α is 3～5 °.
4, a kind of multipurpose spinal column internal fixation device according to claim 1, it is characterized in that its " U " type two sides of " U " shape pedicle screw (8) in 1/3 for straight shape, upper and lower 1/3 be circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227237 CN2366065Y (en) | 1999-01-29 | 1999-01-29 | Multipurpose internal fixer for spinal column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227237 CN2366065Y (en) | 1999-01-29 | 1999-01-29 | Multipurpose internal fixer for spinal column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366065Y true CN2366065Y (en) | 2000-03-01 |
Family
ID=34016783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99227237 Expired - Fee Related CN2366065Y (en) | 1999-01-29 | 1999-01-29 | Multipurpose internal fixer for spinal column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366065Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601601B (en) * | 2009-07-14 | 2011-04-06 | 常州市康辉医疗器械有限公司 | Dynamic spinal internal fixation system |
| CN104323851A (en) * | 2014-10-30 | 2015-02-04 | 哈尔滨医科大学 | Internal fixing device of spine |
-
1999
- 1999-01-29 CN CN 99227237 patent/CN2366065Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601601B (en) * | 2009-07-14 | 2011-04-06 | 常州市康辉医疗器械有限公司 | Dynamic spinal internal fixation system |
| CN104323851A (en) * | 2014-10-30 | 2015-02-04 | 哈尔滨医科大学 | Internal fixing device of spine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |