CN2598518Y - Vertebral column vertebral arch pedicle internal fixing device and special instrument - Google Patents
Vertebral column vertebral arch pedicle internal fixing device and special instrument Download PDFInfo
- Publication number
- CN2598518Y CN2598518Y CNU032368348U CN03236834U CN2598518Y CN 2598518 Y CN2598518 Y CN 2598518Y CN U032368348 U CNU032368348 U CN U032368348U CN 03236834 U CN03236834 U CN 03236834U CN 2598518 Y CN2598518 Y CN 2598518Y
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- China
- Prior art keywords
- pedicle
- fixing device
- screw
- thread
- vertebral arch
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- 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
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- 230000001681 protective effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 206010028980 Neoplasm Diseases 0.000 abstract description 2
- 231100001060 spine abnormality Toxicity 0.000 abstract 1
- 238000002560 therapeutic procedure Methods 0.000 abstract 1
- 208000029761 vertebral disease Diseases 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010010214 Compression fracture Diseases 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 2
- 235000004224 Typha angustifolia Nutrition 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- 210000000115 thoracic cavity Anatomy 0.000 description 2
- 208000018650 Intervertebral disc disease Diseases 0.000 description 1
- 206010058907 Spinal deformity Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
- A61B17/7077—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
- A61B17/7079—Tools requiring anchors to be already mounted on an implanted longitudinal or transverse element, e.g. where said element guides the anchor motion
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- Health & Medical Sciences (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model discloses a vertebral column vertebral arch pedicle internal fixing device and special instrument, wherein the vertebral arch pedicle internal fixing device comprises a plurality of pedicle bolts, connection rods, pressing tight bolts used to be screwed into the spine, wherein the tail of each pedicle bolt is provided with a sawtooth screw thread, which matches with the exterior screw thread arranged on a lock screw plug; the special instrument includes a plurality of hollow positor pressurization rods, positor horizontal rods and pressurization nuts used to be screwed into hollow slots on the pedicle bolts. The utility model can be widely used to treat the fracture of thoracic-lumbar vertebra, spine tumor, and spine abnormality, as well as thoracic-lumbar vertebra diseases that need surgical therapy and posterior spinal internal fixation.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates to a kind of spinal column pedicle of vertebral arch inner fixing device and specific purpose tool thereof specifically.
Background technology
Current, it is very general to be used for the treatment of lumbar vertebra compression fracture, tumor of spine, deformity of spine rectification and other various breast lumbar disc diseases of operative treatment and spinal column way of escape internal fixation that need, and spinal column way of escape pedicle of vertebral arch internal fixation is the very rational a kind of method of the above-mentioned disease of treatment, the pedicle of vertebral arch inner fixation surgical instrument that is used for the treatment of above-mentioned disease of now existing multiple domestic and international production, it comprises spinal column pedicle of vertebral arch inner fixing device and specific purpose tool two parts thereof of implant into body.
For existing spinal column pedicle of vertebral arch inner fixing device, at first, because the female thread of its vertebral body screw nail tail adopts standard thread, when screwing the locking plug screw, the nail radial component that tail bore is relatively very big, causes following closely tail easily and is made the coupling mechanism force of nail rod not enough by spreading.Secondly, because the nail bar solid section of the vertebral body screw that adopts is unanimous between the higher and lower levels cylindrical, the fatigue resistance of nail bar cervical region is relatively poor.Once more, because the thread tooth of vertebral body screw is a standard tooth form, exist the adhesion between vertebral body screw and the sclerotin little, the resistance to plucking ability.In addition, also exist the nail rod that complicated defective is installed in the prior art.When spinal column pedicle of vertebral arch inner fixing device was installed, many dependences were hand-manipulated in the prior art, do not have a kind of erecting tools of special use, had the defectives such as strength is not enough, fitting operation complexity that reset.
Technology contents
Main purpose of the present utility model is to provide that a kind of coupling mechanism force of following closely rod is big, fatigue resistance better, strong, the reset force of resistance to plucking ability easy spinal column pedicle of vertebral arch inner fixing device and the specific purpose tool thereof of fitting operation greatly especially.
To achieve these goals, the solution of this utility model employing is:
A kind of spinal column pedicle of vertebral arch inner fixing device, comprise several pedicle screws that are used to be screwed into vertebral body, pitman, compress plug screw, the female thread of the nail tail of described pedicle screw is a saw-tooth thread, and this saw-tooth thread matches with locking screw external screw thread beyond the Great Wall.
The nail tail of described pedicle screw is provided with prolongation, and the nail tail of this pedicle screw and prolongation thereof have medium altitude groove and have easily broken cut channel between nail tail and prolongation.The sidewall of nail tail and prolongation thereof has the U-shaped opening that pitman is laid in two relative being used to.
The screw rod solid section of described pedicle screw is taper and major diameter of thread is cylindrical from top to bottom.The thread tooth of pedicle screw is the prickle shape that is acute angle with the sharp direction of nail.
The described specific purpose tool that is used for spinal column pedicle of vertebral arch inner fixing device comprises rear prelum extension rod, the prelum cross bar of the hollow of several grooves that are used to be screwed into described pedicle screw nail tail, rotating shaft by this extension rod rotary sleeve and the place ahead extension rod after this prelum cross bar one side is fixedlyed connected with the extension rod rotary sleeve flexibly connects, prelum cross bar opposite side flexibly connects by the rotating shaft of extension rod rotary sleeve and rear extension rod, and the prelum cross bar is provided with trapezoidal thread and pressurizing nut.
Wherein, described prelum extension rod lower end can be provided with pedicle screw is followed closely the protective sleeve that tail is inserted in.
Compared with prior art, the outstanding beneficial effect of this utility model is:
1. the coupling mechanism force between lock-screw and the pitman is powerful reliable;
2. the fatigue resistance of vertebral body screw;
3. the pedicle screw resistance to plucking is exerted oneself greatly;
4. installation, easy and simple to handle, thus operating time shortened;
5. pressurization reset force in the rear of specific purpose tool is strong.
This utility model can reduce the various complication that the operation back causes owing to the spinal column pedicle of vertebral arch inner fixing device undercapacity of implanting greatly, thereby has improved the curative effect to this type of disease effectively.
Introduce this utility model in detail below in conjunction with description of drawings and specific implementation.
Description of drawings
Fig. 1 is the sketch map of this utility model specific purpose tool;
Fig. 2 is the scheme of installation of this utility model spinal column pedicle of vertebral arch inner fixing device and specific purpose tool thereof;
Fig. 3 is the side view cutaway drawing that is connected of pedicle screw and pitman in this utility model;
Fig. 4 is the front view of this utility model pedicle screw;
Fig. 5 is the vertical view of this utility model pedicle screw;
Fig. 6 is the axial side view cutaway drawing of prelum extension rod in rear in this utility model specific purpose tool;
Fig. 7 is the front view of extension rod rotary sleeve in this utility model specific purpose tool;
Fig. 8 is the side-looking partial sectional view of extension rod rotary sleeve in this utility model specific purpose tool;
Fig. 9 is that the master of this utility model locking plug screw looks partial sectional view.
Specific implementation
Described a kind of spinal column pedicle of vertebral arch inner fixing device of this utility model embodiment and specific purpose tool thereof, wherein:
As Fig. 2, Fig. 3, shown in Figure 9, this spinal column pedicle of vertebral arch inner fixing device comprises 4 or 6,8 pieces of pedicle screws 1 that are used to be screwed into vertebral body, pitman 2, locking plug screws 3, the female thread of the nail tail 4 of described pedicle screw 1 be with lock plug screw 3 on the saw-tooth thread that cooperates of external screw thread.Locking plug screw 3 external screw thread be saw-tooth thread.Use saw-tooth thread, when screwing locking plug screw 3, the radial pressure that can make 3 pairs of pedicle screws nails of locking screw plug tail 4 is minimum and axial compressive force is very big, has strengthened the coupling mechanism force of pedicle screw 1 with pitman 2.
As Fig. 3, Fig. 4, shown in Figure 5, the nail tail 4 of described pedicle screw 1 is provided with prolongation 5, the nail tail 4 and the prolongation 5 thereof of this pedicle screw 1 have medium altitude groove 6, nail tail 4 and prolongation 5 thereof have the U-shaped opening 7 that pitman is laid in two relative being used to, and have easily broken cut channel 8 between nail tail and prolongation.
The nail bar solid section of described pedicle screw 1 is taper and major diameter of thread is cylindrical from top to bottom, and the nail bar that this structure can strengthen pedicle screw 1 is the fatigue resistance of cervical region and the resistance to plucking output capacity of pedicle screw 1 especially.The thread tooth of described pedicle screw 1 is the prickle shape that is acute angle with nail tail direction, and this structure can further strengthen the binding ability of pedicle screw and sclerotin.
As shown in Figure 2, be connected with pitman 2 by U-shaped opening 7 between the pedicle screw 1, by locking plug screw 3 pedicle screw 1 and pitman 2 coupled together, U-shaped opening 7 helps laying smoothly of pitman.
As Fig. 1, Fig. 6, Fig. 7, shown in Figure 8, this specific purpose tool (claiming reduction of the fracture rear prelum again) comprises several the place ahead extension rods 9 that is used to be screwed into the hollow in the described pedicle screw nail tail 4, rear extension rod 10, prelum cross bar 11, these prelum cross bar 11 1 sides are fixedlyed connected the back by rotating shaft 13 flexible connections of this extension rod rotary sleeve 12 with the place ahead extension rod 9 with extension rod rotary sleeve 12, wherein, prelum cross bar 11 opposite sides link to each other with rear extension rod 10 with rotating shaft 13 by extension rod rotary sleeve 12, prelum cross bar 11 is provided with trapezoidal thread, and is provided with pressurizing nut 14.The lower end of extension rod 9, rear extension rod 10 is provided with and pedicle screw can be followed closely the protective sleeve 15 that tail 4 is inserted in forwardly.
Reset fixing or during other short segment thoracic and lumbar vertebral posterior internal fixation operations carrying out the lumbar vertebra compression fracture way of escape, 4 or 6,8 pieces of pedicle screws 1 are screwed into the bilateral pedicle of vertebral arch of corresponding vertebral body, after pedicle screw 1 usefulness pitman 2 connections with homonymy, the reuse lock-screw is tightened fixing, can reach the purpose of strong internal fixation.
When carrying out the operation of fractured vertebral body reattachment surgery; respectively put the special-purpose reduction of the fracture rear prelum of a cover in the spinal column both sides; at first the anterior extension rod 9 in every cover is screwed in the nail tail of pedicle screw of upper vertebral body; rear portion extension rod 10 is screwed in the pedicle screw nail tail 4 of the next vertebral body, and is inserted in the protective sleeve of pedicle screw nail tail in its lower end.
Strutting the auxiliary pressurizing nut that clockwise rotates down on the prelum cross bar of rear of pincers then, rear extension rod 10 slides along prelum cross bar 11 by extension rod rotary sleeve 12, can reach the purpose that fractured vertebral body resets.
Tighten locking plug screw 3 with spanner by the central circular hole of extension rod at last, remove the rear prelum after the easily broken cut channel 8 of pedicle screw nail tail 4 fractures and follow closely the prolongation 5 of tail, just finished the installation of this utility model internal fixation system.
In the foregoing description, pedicle screw can have plurality of specifications, can be divided into 4.5mm as diameter, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 7.5mm, 8.0mm length can be divided into 35mm, 40mm, 45mm, 50mm, 55mm, 60mm is applicable to various build patients' thoracic vertebra, lumbar vertebral posterior operation internal fixation.Need not the operation that vertebral body resets for simple breast lumbar vertebra short segment internal fixation, then need not to use the rear prelum and pedicle screw 1 is installed directly and pitman 2 gets final product.
Claims (8)
1, a kind of spinal column pedicle of vertebral arch inner fixing device, comprise several pedicle screws that are used to be screwed into vertebral body, pitman, locking plug screw, it is characterized in that: the female thread of the nail tail of described pedicle screw is a saw-tooth thread, and this saw-tooth thread matches with locking screw external screw thread beyond the Great Wall.
2, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: the external screw thread of described locking plug screw can be any in trapezoidal thread, rectangular thread, the saw-tooth thread.
3, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1, it is characterized in that: the nail tail of described pedicle screw is provided with prolongation, the nail tail and the prolongation thereof of this pedicle screw have medium altitude groove, have easily broken cut channel between nail tail and prolongation.
4, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 3 is characterized in that: the sidewall of nail tail and prolongation thereof has the U-shaped opening that pitman is laid in two relative being used to.
5, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: the screw rod solid section of described pedicle screw is taper and major diameter of thread is cylindrical from top to bottom.
6, a kind of spinal column pedicle of vertebral arch inner fixing device as claimed in claim 1 is characterized in that: the thread tooth of described pedicle screw is the prickle shape that is acute angle with nail tail direction.
7, a kind of specific purpose tool that is used for the described spinal column pedicle of vertebral arch of claim 1 inner fixing device, it is characterized in that: this specific purpose tool comprises rear prelum extension rod, the prelum cross bar of the hollow of several grooves that are used for being screwed into described pedicle screw nail tail, rotating shaft by this extension rod rotary sleeve and the place ahead extension rod after this prelum cross bar one side is fixedlyed connected with the extension rod rotary sleeve flexibly connects, prelum cross bar opposite side flexibly connects by the rotating shaft of extension rod rotary sleeve and rear extension rod, and the prelum cross bar is provided with trapezoidal thread and pressurizing nut.
8, a kind of specific purpose tool that is used for spinal column pedicle of vertebral arch inner fixing device as claimed in claim 5 is characterized in that: described prelum extension rod lower end is provided with can follow closely pedicle screw the protective sleeve that tail is inserted in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032368348U CN2598518Y (en) | 2003-01-29 | 2003-01-29 | Vertebral column vertebral arch pedicle internal fixing device and special instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032368348U CN2598518Y (en) | 2003-01-29 | 2003-01-29 | Vertebral column vertebral arch pedicle internal fixing device and special instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2598518Y true CN2598518Y (en) | 2004-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032368348U Expired - Fee Related CN2598518Y (en) | 2003-01-29 | 2003-01-29 | Vertebral column vertebral arch pedicle internal fixing device and special instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2598518Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303943C (en) * | 2005-03-25 | 2007-03-14 | 张英泽 | Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe |
| CN102149344A (en) * | 2008-09-12 | 2011-08-10 | 斯恩蒂斯有限公司 | Reduction tool for spinal rod |
| CN103096820A (en) * | 2010-07-19 | 2013-05-08 | 华沙整形外科股份有限公司 | Extensions for spinal anchors |
| CN103717157A (en) * | 2011-06-23 | 2014-04-09 | 斯潘威公司 | Surgical device for correcting deformations in the spinal column |
| CN105662564A (en) * | 2016-02-26 | 2016-06-15 | 邓宇 | Fixing sleeve of thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system |
| CN105708535A (en) * | 2016-01-03 | 2016-06-29 | 邓宇 | Posterior minimally invasive screw-rod system for thoracolumbar vertebral fracture |
| CN105816228A (en) * | 2016-02-26 | 2016-08-03 | 邓宇 | T-shaped fixing rod of thoracolumbar vertebral fracture posterior micro-wound screw-rod fixation percutaneous reduction system |
| CN106073874A (en) * | 2016-06-08 | 2016-11-09 | 无锡市闻泰百得医疗器械有限公司 | A kind of pedicle screw fixation system relocation device |
| CN113796942A (en) * | 2020-06-17 | 2021-12-17 | 温冰涛 | Double-side reduction forceps for vertebral body slippage |
-
2003
- 2003-01-29 CN CNU032368348U patent/CN2598518Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303943C (en) * | 2005-03-25 | 2007-03-14 | 张英泽 | Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe |
| CN102149344A (en) * | 2008-09-12 | 2011-08-10 | 斯恩蒂斯有限公司 | Reduction tool for spinal rod |
| CN103096820A (en) * | 2010-07-19 | 2013-05-08 | 华沙整形外科股份有限公司 | Extensions for spinal anchors |
| CN103096820B (en) * | 2010-07-19 | 2016-08-03 | 华沙整形外科股份有限公司 | Extensions for spinal anchors |
| CN103717157A (en) * | 2011-06-23 | 2014-04-09 | 斯潘威公司 | Surgical device for correcting deformations in the spinal column |
| CN105708535A (en) * | 2016-01-03 | 2016-06-29 | 邓宇 | Posterior minimally invasive screw-rod system for thoracolumbar vertebral fracture |
| CN105662564A (en) * | 2016-02-26 | 2016-06-15 | 邓宇 | Fixing sleeve of thoracolumbar vertebral fracture posterior minimally-invasive nail rod fixing external skin restoration system |
| CN105816228A (en) * | 2016-02-26 | 2016-08-03 | 邓宇 | T-shaped fixing rod of thoracolumbar vertebral fracture posterior micro-wound screw-rod fixation percutaneous reduction system |
| CN106073874A (en) * | 2016-06-08 | 2016-11-09 | 无锡市闻泰百得医疗器械有限公司 | A kind of pedicle screw fixation system relocation device |
| CN113796942A (en) * | 2020-06-17 | 2021-12-17 | 温冰涛 | Double-side reduction forceps for vertebral body slippage |
| CN113796942B (en) * | 2020-06-17 | 2023-11-21 | 温冰涛 | Bilateral reset forceps for vertebral body slipping |
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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 |