CN202161394U - Adjustable and movable pedicle screw on connecting rod - Google Patents
Adjustable and movable pedicle screw on connecting rod Download PDFInfo
- Publication number
- CN202161394U CN202161394U CN2011202663097U CN201120266309U CN202161394U CN 202161394 U CN202161394 U CN 202161394U CN 2011202663097 U CN2011202663097 U CN 2011202663097U CN 201120266309 U CN201120266309 U CN 201120266309U CN 202161394 U CN202161394 U CN 202161394U
- Authority
- CN
- China
- Prior art keywords
- groove
- pitman
- screw
- nail
- connecting 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 - Lifetime
Links
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 241001079814 Symphyotrichum pilosum Species 0.000 description 2
- 235000004224 Typha angustifolia Nutrition 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 206010039722 scoliosis Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000693 hamate bone Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
Abstract
The utility model relates to an adjustable and movable pedicle screw on a connecting rod, comprising a screw seat, a universal ball-head screw, a spherical ring and a jack screw, wherein the universal ball-head screw is arranged in the screw seat by the spherical ring; the screw seat is provided with a groove hole provided with the connecting rod; the inner wall of the groove hole of the screw seat is provided with internal threads, and is matched with the jack provided with corresponding external threads to press the connecting rod tightly; the upper part of the spherical ring is provided with a groove provided with the connecting rod; the jack screw is positioned at the upper part of the groove; and the width of the groove is consistent to the diameter of the connecting rod and is less than the distance from the bottom surface of the screwed jack screw to the bottom part of the groove. Therefore, the jack screw presses on the spherical ring, and the jack screw and the spherical ring are installed in a matching manner with a gap from upper to lower, so that the connecting rod can slide freely by small amplitude, and dynamic and stable fixation is realized. The adjustable and movable pedicle screw has the advantages of reasonable structure, convenient installation and reliable use, is suitable for being installed and fixed in the pedicle, is especially used for being installed at the two ends of the connecting rod and is used for shaping and internal fixation of the vertebral column.
Description
Technical field
This utility model relates to a kind of bone surgery and uses medical apparatus, and specifically a kind of pitman that is used for backbone correcting and internal fixation is installed the pedicle nail of adjustable.
Background technology
We know, at present, to the disease of spinal trauma, slippage, degenerative disease and other unstable spine, adopt the spinal fixation device to fix more.Existing spinal fixation device kind is more, mainly contains the Ha Shi rod, and apparatuses such as Shandong Ge Shi rod are installed composition through pedicle nail or universal pedicle nail, hamulus of hamate bone etc.Universal pedicle nail resets through lifting, and it is good that pedicle nail and internal fixation bar etc. are contacted.Existing pedicle nail mainly comprises nail seat and button; Button is the thread tapping of real core; It is installed in the nail seat through ball collar and tension ring, and the nail seat comprises bottom canned paragraph and the top section of autotomying two parts, has the slotted eye that internal fixation bar is installed on the nail seat; A nail seat slotted eye inwall is provided with female thread, is used for cooperating with jackscrew installing and fixing pitman.In general, installing and fixing of pitman will stablize, reliably, can not be moved.Like this, can not realize that the pitman dynamic stability fixes, the installation of pitman just can not be satisfied the requirement that the lumbar vertebra segmental is slided, and is unfavorable for stability, the influence operation syncretizing effect of spinal fixation.
Summary of the invention
This utility model technical problem to be solved is the deficiency that overcomes above-mentioned prior art, provides a kind of rational in infrastructure, easy for installation, uses reliably, and safe and effective, pitman is installed the pedicle nail of adjustable.
The technical scheme that this utility model solves the problems of the technologies described above employing is: a kind of pedicle nail of pitman adjustable; It includes nail seat, universal ball end nail, ball collar, jackscrew, and the universal ball end nail is installed in the nail seat through ball collar, has the slotted eye that pitman is installed on the nail seat; Nail seat slotted eye inwall is provided with female thread; It is provided with corresponding externally threaded jackscrew and cooperate, install through the jackscrew of screwing and compress pitman, it is characterized in that: said ball collar top is provided with the groove that pitman is installed; Jackscrew and screw-internal thread fit are screwed; Be positioned at the top of groove, the width of said groove is consistent with the pitman diameter, and less than the distance of jackscrew bottom surface to the bottom portion of groove of screwing.Like this, jackscrew is pressed onto on the ball collar, and both cooperate the installation pitman, leaves the gap up and down, can make the pitman front and back, slightly be free to slide up and down, and the realization dynamic stability is fixed.
The described groove of this utility model is a U type groove.
The sidewall that the described nail seat of this utility model is gone up slotted eye is provided with and lifts groove.
Pitman is installed on ball collar top in this utility model nail seat; Be provided with the gap between jackscrew about the pitman and the ball collar groove; Install pitman is movable through the slotted eye on the nail seat, make pitman can before and after, slightly be free to slide up and down, and can not double swerve; Simultaneously be provided with block, with the stroke of restriction pitman slip in the pitman end.Like this, restricted slip between the nail rod reaches dynamic stability and fixes.Against existing technologies, this utility model is rational in infrastructure, and is easy for installation, uses reliably, and safe and effective, pitman is installed adjustable.This utility model is suitable in pedicle of vertebral arch, installing and fixing; Be exclusively used in and be installed in the pitman two ends; Through being connected with pitman, be used for backbone correcting and internal fixation, utilize the excellent slip fixed function of nail to realize that the scoliosis growth is orthopedic fixing; Satisfy the active instructions for use of lumbar vertebra segmental, thereby kept the stability of spinal fixation, promotion to merge.
Description of drawings
Below in conjunction with accompanying drawing this utility model is done further to describe.
Fig. 1 is the structural representation of this utility model.
Fig. 2 is the local enlarged diagram of Fig. 1.
Label among the figure is: 1. jackscrew, 3. ball collar, 4. nail seat, 5. universal ball end nail.
The specific embodiment
From Fig. 1, Fig. 2, can find out, a kind of pedicle nail of pitman adjustable, it includes nail seat 4, universal ball end nail 5, ball collar 3, jackscrew 1 etc.Universal ball end nail 1 is installed in the nail seat 4 through ball collar 3, and ball collar 3 is packed into and followed closely in the seat 4, is used for compressing universal ball end nail 5, utilizes ball collar, adopts the form of universal connection, becomes universal pedicle nail.Universal ball end nail 5 is the threaded rods of band thread tapping, and its top is a bulb, is provided with the hexagonal screw in the middle of the bulb, is used for cooperating with tightening tool such as spiral shell cutter, is fixed in the pedicle of vertebral arch.Have the slotted eye that pitman is installed on the nail seat 4, nail seat 4 slotted eye inwalls are provided with female thread, its be provided with corresponding externally threaded jackscrew 1 and cooperate, install through the jackscrew 1 of screwing and compress pitman etc.Above-mentioned composition, structure and annexation belong to prior art, repeat no more.
The characteristics of this utility model are: said ball collar 3 tops are provided with the groove that pitman is installed, and described groove is a U type groove.Jackscrew 1 is screwed with nail seat 4 slotted eye screw-internal thread fit, is arranged in the top of groove pitman, and the width of said groove is consistent with the pitman diameter, and the width of groove is less than the distance of jackscrew bottom surface to the bottom portion of groove of screwing.Like this, jackscrew 1 is pressed onto on the ball collar 3, and both cooperate the installation pitman, leave the gap up and down, and can make pitman ability front and back, slightly be free to slide up and down, and can not double swerve.
The sidewall that the described nail seat of this utility model is gone up slotted eye is provided with and lifts groove.Lifting groove is rectangle or ellipse garden shape, and is provided with the degree of depth of 0.3-1.8 millimeter.Lift groove and be used for cooperating, can carry out pressure bar and reset with specific purpose tool.
Pitman is installed on ball collar top in this utility model nail seat; Be provided with the gap between jackscrew about the pitman and the ball collar groove; Install pitman is movable through the slotted eye on the nail seat, make pitman can before and after, slightly be free to slide up and down, and can not double swerve; Simultaneously be provided with block, with the stroke of restriction pitman slip in the pitman end.Like this, restricted slip between the nail rod reaches dynamic stability and fixes.This utility model is rational in infrastructure, and is easy for installation, uses reliable; Safe and effective, pitman is installed adjustable, utilizes the excellent slip fixed function of nail to realize that the scoliosis growth is orthopedic fixing; Satisfy the active instructions for use of lumbar vertebra segmental, thereby kept the stability of spinal fixation, promotion to merge.This utility model is suitable in pedicle of vertebral arch, installing and fixing, and is exclusively used in to be installed in the pitman two ends, through being connected with pitman, is used for backbone correcting and internal fixation.
Claims (3)
1. the pedicle nail of a pitman adjustable, it includes nail seat, universal ball end nail, ball collar, jackscrew, and the universal ball end nail is installed in the nail through ball collar; Have the slotted eye that pitman is installed on the nail seat, a nail seat slotted eye inwall is provided with female thread, its be provided with corresponding externally threaded jackscrew and cooperate; The jackscrew installation compresses pitman through screwing; It is characterized in that: said ball collar top is provided with the groove that pitman is installed, and jackscrew and screw-internal thread fit are screwed, and are positioned at the top of groove; The width of said groove is consistent with the pitman diameter, and less than the distance of jackscrew bottom surface to the bottom portion of groove of screwing.
2. according to the pedicle nail of the said pitman adjustable of claim 1, it is characterized in that: described groove is a U type groove.
3. according to the pedicle nail of the said pitman adjustable of claim 1, it is characterized in that: the sidewall that described nail seat is gone up slotted eye is provided with and lifts groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202663097U CN202161394U (en) | 2011-07-26 | 2011-07-26 | Adjustable and movable pedicle screw on connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202663097U CN202161394U (en) | 2011-07-26 | 2011-07-26 | Adjustable and movable pedicle screw on connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202161394U true CN202161394U (en) | 2012-03-14 |
Family
ID=45797251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202663097U Expired - Lifetime CN202161394U (en) | 2011-07-26 | 2011-07-26 | Adjustable and movable pedicle screw on connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202161394U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103800059A (en) * | 2014-01-07 | 2014-05-21 | 创生医疗器械（中国）有限公司 | Spine internal fixation adjustable transverse connecting device |
| CN104398297A (en) * | 2014-12-27 | 2015-03-11 | 山东威高骨科材料股份有限公司 | Pedicle screw |
| CN105708538A (en) * | 2014-08-11 | 2016-06-29 | 天津康立尔生物科技有限公司 | Universal pedicle screw |
| CN106551721A (en) * | 2015-09-30 | 2017-04-05 | 上海三友医疗器械股份有限公司 | Transverse shift nail tail, laterally adjustable section spinal bone screw and method for implantation |
| WO2017054506A1 (en) * | 2015-09-30 | 2017-04-06 | 上海三友医疗器械股份有限公司 | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method |
| CN109394323A (en) * | 2018-12-25 | 2019-03-01 | 上海斯潘威生物技术有限公司 | A kind of self-locking Universal screw nail structure for internal fixation of spine |
| CN110338894A (en) * | 2019-06-04 | 2019-10-18 | 迪恩医疗科技有限公司 | It can the fixed pedicle nail of double screws |
| CN113768603A (en) * | 2021-09-16 | 2021-12-10 | 右江民族医学院附属医院 | Universal pedicle screw fixing device and mounting tool thereof |
-
2011
- 2011-07-26 CN CN2011202663097U patent/CN202161394U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103800059A (en) * | 2014-01-07 | 2014-05-21 | 创生医疗器械（中国）有限公司 | Spine internal fixation adjustable transverse connecting device |
| CN103800059B (en) * | 2014-01-07 | 2016-01-20 | 创生医疗器械（中国）有限公司 | Internal fixation of spine is adjustable horizontal connect device |
| CN105708538A (en) * | 2014-08-11 | 2016-06-29 | 天津康立尔生物科技有限公司 | Universal pedicle screw |
| CN104398297A (en) * | 2014-12-27 | 2015-03-11 | 山东威高骨科材料股份有限公司 | Pedicle screw |
| CN106551721A (en) * | 2015-09-30 | 2017-04-05 | 上海三友医疗器械股份有限公司 | Transverse shift nail tail, laterally adjustable section spinal bone screw and method for implantation |
| WO2017054506A1 (en) * | 2015-09-30 | 2017-04-06 | 上海三友医疗器械股份有限公司 | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method |
| CN106551721B (en) * | 2015-09-30 | 2018-10-12 | 上海三友医疗器械股份有限公司 | Laterally adjustable section spinal bone screw |
| CN109394323A (en) * | 2018-12-25 | 2019-03-01 | 上海斯潘威生物技术有限公司 | A kind of self-locking Universal screw nail structure for internal fixation of spine |
| CN110338894A (en) * | 2019-06-04 | 2019-10-18 | 迪恩医疗科技有限公司 | It can the fixed pedicle nail of double screws |
| CN113768603A (en) * | 2021-09-16 | 2021-12-10 | 右江民族医学院附属医院 | Universal pedicle screw fixing device and mounting tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |
|
| CX01 | Expiry of patent term |