CN102090920A - Universal micrometer pedicle screw - Google Patents
Universal micrometer pedicle screw Download PDFInfo
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- CN102090920A CN102090920A CN 201110067203 CN201110067203A CN102090920A CN 102090920 A CN102090920 A CN 102090920A CN 201110067203 CN201110067203 CN 201110067203 CN 201110067203 A CN201110067203 A CN 201110067203A CN 102090920 A CN102090920 A CN 102090920A
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- bulb
- spinal fixation
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Abstract
The invention provides a universal micrometer pedicle screw. The universal micrometer pedicle screw comprises a spinal fixed bar, a locating bearing, a screw, a spherical nut and a clamp nut, wherein, the spinal fixed bar is arranged on the locating bearing, and a center line of the spinal fixed bar is perpendicular to a center line of a locating pillar; the locating bearing is provided with an internal thread; a ball joint is arranged at the tail part of the screw, and two sides of the ball joint are provided with external planes; the screw passes through the locating bearing, and the ball joint at the tail part of the screw is suspended on the locating bearing; the spherical nut is in threaded connection with the locating bearing and covers the ball joint of the screw; the inner side of the spherical nut is provided with internal planes corresponding to the external planes at the two sides of the ball joint of the screw, and micro-gap is arranged between the external planes and the internal planes; and the clamp nut is in threaded connection with the locating bearing and presses the spinal fixed bar. The universal micrometer pedicle screw has simple structure, is convenient in use and can help a patient obviously relieve low back pain.
Description
Technical field
The present invention relates to medical instruments field, specifically, relate to a kind of universal fine motion pedicle nail, be used in the non-fusion technology of lumbar vertebra, promptly in the dynamic stabilization system.
Background technology
In the treatment of the low back pain that causes because of the lumbar vertebra unstability, the invalid patient of non-operative treatment was normally adopted the converged fixed art in the past.LOCATION OF PEDICLE SCREW FIXATION and Invasive lumbar fusion device bone-graft fusion are the most frequently used technology, and fusion rate can reach 90%～100%.Though part patient has obtained successfully to merge, chronic low back pain is not obviously alleviated, and evidence show and increased the load pressure of adjacent segment after merging, thereby causes it to quicken regression.In view of this, scholars have designed multiple lumbar vertebral posterior non-integration fixture, i.e. motorization fixture (dynamic stabilization devices).Motorization is fixed and is called soft fixing or flexible fixing again; its objective is the spinal motion that guarantees in the controlled range; change the load pattern of motion segment; and limit the abnormal movement of this sections; can use separately; also can use simultaneously, to prevent that merging the contingent regression of the adjacent motor unit of sections quickens with strong internal fixation.The motorization fixture now mainly is divided into 4 types of the half strong metal inner fixing devices of device for spreading between spinous process, interspinous ligament device, the tough belting of pedicle screw and pedicle screw.When realizing the pedicle dynamic stabilization system enforcement non-fusion technology of lumbar vertebra at present, generally be that the rod that connects pedicle nail is improved, as make fine motion rod type, spring type, thin excellent type etc.The shortcoming of these structures is complex structures, uses inconvenient.
Summary of the invention
The purpose of this invention is to provide a kind of universal fine motion pedicle nail simple in structure, easy to use, it can make the patient obviously alleviate low back pain.
The technical scheme that realizes above-mentioned purpose is: a kind of universal fine motion pedicle nail, the spinal fixation rod, positioning support and screw, the spinal fixation rod is installed on the positioning support, and the centrage of spinal column locating bar and the centrage of positioning pillars are perpendicular, also comprise Ball faced nut and clamp nut, has female thread on the positioning support, the afterbody of screw is a bulb, the both sides of this bulb have outerplanar, screw passes positioning support, the bulb of screw afterbody is suspended on the positioning support, and Ball faced nut is threaded with positioning support, and Ball faced nut covers the bulb of screw, the Ball faced nut inboard has and the corresponding inner plane of screw bulb both sides outerplanar, have minim gap between outerplanar and the inner plane, clamp nut is threaded with positioning support, and clamp nut is pushed down the spinal fixation rod.
Positioning support is a U type bearing, has U type groove on it, and the spinal fixation rod is installed in this U type groove.
The screw surface has plasma-coated or hydroxyapatite coating layer.
After adopting technique scheme, the Ball faced nut inboard has and the corresponding inner plane of screw bulb both sides outerplanar, has minim gap between outerplanar and the inner plane, therefore screw is excessive cooperations with the Ball faced nut two ends, around the side is matched in clearance, gap length can be controlled according to designing requirement, like this in human body because the influence of receiving physical activity power, the bulb of screw can be in positioning support carries out activity in the concave spherical surface of Ball faced nut.The part that the present invention uses is few, simple in structure, uses very convenient.The present invention implements fine motion by changing the universal structure of pedicle nail, thereby reaches the non-fusion of lumbar vertebra, after the corrective surgery success, can obviously slow down low back pain.
Description of drawings
Fig. 1 is a sectional structure sketch map of the present invention.
The specific embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of universal fine motion pedicle nail, spinal fixation rod 3, positioning support 2 and screw 5, spinal fixation rod 3 is installed on the positioning support 2, and the centrage of the centrage of spinal column locating bar 3 and positioning pillars 2 is perpendicular, also comprise Ball faced nut 4 and clamp nut 1, has female thread on the positioning support 2, the afterbody of screw 5 is a bulb, the both sides of this bulb have outerplanar 5-1, and screw 5 passes positioning support 2, and the bulb of screw afterbody is suspended on the positioning support 2, Ball faced nut 4 is threaded with positioning support 2, and Ball faced nut 4 covers the bulb of screw 5, and Ball faced nut 4 inboards have the corresponding inner plane 4-1 with screw bulb both sides outerplanar 5-1, have minim gap between outerplanar 5-1 and the inner plane 4-1, clamp nut 1 is threaded with positioning support 2, and clamp nut 1 is pushed down spinal fixation rod 3.
Positioning support 2 is a U type bearing, has U type groove 6 on it, and spinal fixation rod 3 is installed in this U type groove 6.
Screw 5 surfaces have plasma-coated or hydroxyapatite coating layer.By being provided with plasma-coated or hydroxyapatite coating layer can engage firmly with bone so that screw 5 is squeezed in the bone back.
Use of the present invention is as follows:
1, this product installs before the art as shown in Figure 1, clamp nut 1 is back-outed erection support 2 with supporting clamp nut spanner in when operation.
2, be inserted in the screw 5 ball head hexagonals with supporting screw wrench, be screwed in the hole of the pedicle of vertebral arch of having accomplished fluently.
3, put into spinal fixation rod 3, spinal fixation rod 3 is put into U-lag 6 on the U-shaped bearing.
4, with supporting clamp nut spanner clamp nut 1 is screwed in the erection support 2, it can be fixed on the spinal fixation rod in the U-lag 6 of erection support 2.
More than after whole process finishes, spinal fixation rod 3 compacted nuts 1 in the universal fine motion pedicle nail of this moment are pressed in the U-lag 6 of erection support 2, spinal fixation rod 3 and erection support 2 are integral, simultaneously because Ball faced nut 4 two ends in screw 5 and the erection support 2 are interference fits, around the side is matched in clearance, its gap length is controlled according to designing requirement, like this in human body owing to be subjected to the influence of physical activity power, the sphere of screw can be in bearing carries out activity in the concave spherical surface of Ball faced nut.
Claims (3)
1. universal fine motion pedicle nail, spinal fixation rod (3), positioning support (2) and screw (5), spinal fixation rod (3) is installed on the positioning support (2), and the centrage of the centrage of spinal column locating bar (3) and positioning pillars (2) is perpendicular, it is characterized in that: also comprise Ball faced nut (4) and clamp nut (1), positioning support has female thread on (2), the afterbody of screw (5) is a bulb, the both sides of this bulb have outerplanar (5-1), screw (5) passes positioning support (2), the bulb of screw afterbody is suspended on the positioning support (2), Ball faced nut (4) is threaded with positioning support (2), and Ball faced nut (4) covers the bulb of screw (5), Ball faced nut (4) inboard has and the corresponding inner planes of screw bulb both sides outerplanars (5-1) (4-1), has minim gap between outerplanar (5-1) and the inner plane (4-1), clamp nut (1) is threaded with positioning support (2), and clamp nut (1) is pushed down spinal fixation rod (3).
2. universal fine motion pedicle nail according to claim 1 is characterized in that: described positioning support (2) is a U type bearing, has U type groove (6) on it, and spinal fixation rod (3) is installed in this U type groove (6).
3. universal fine motion pedicle nail according to claim 1 is characterized in that: described screw (5) surface has plasma-coated or hydroxyapatite coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110067203 CN102090920A (en) | 2011-03-21 | 2011-03-21 | Universal micrometer pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110067203 CN102090920A (en) | 2011-03-21 | 2011-03-21 | Universal micrometer pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102090920A true CN102090920A (en) | 2011-06-15 |
Family
ID=44124304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110067203 Pending CN102090920A (en) | 2011-03-21 | 2011-03-21 | Universal micrometer pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102090920A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319105A (en) * | 2011-08-15 | 2012-01-18 | 丁亮华 | Universal elastic torsion pedicle nail |
| CN103070725A (en) * | 2013-01-14 | 2013-05-01 | 北京市富乐科技开发有限公司 | Minimally invasive extension jib pedicle screw |
| CN105496540A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Iliac screw with bone induction material coating and spine fixing device |
| CN105615975A (en) * | 2014-11-13 | 2016-06-01 | 无锡市闻泰百得医疗器械有限公司 | Posterior spinal internal fixation screw structure |
| CN107088085A (en) * | 2017-06-01 | 2017-08-25 | 成都贝施美医疗设备有限公司 | A kind of spinal stabilization device |
| CN112370136A (en) * | 2020-10-20 | 2021-02-19 | 广东施泰宝医疗科技有限公司 | Novel spout pedicle of vertebral arch screw internal fixation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360879A (en) * | 2000-12-28 | 2002-07-31 | 林智一 | Vertebra fixing reductor |
| CN1965769A (en) * | 2005-10-12 | 2007-05-23 | 比德曼莫泰赫有限公司 | Bone anchoring device |
| CN101816587A (en) * | 2010-04-19 | 2010-09-01 | 天津正天医疗器械有限公司 | Universal pedicle screw for internal fixation of spine |
| CN202010196U (en) * | 2011-03-21 | 2011-10-19 | 丁亮华 | Universal micro-movement vertebral arch pedicle nail |
-
2011
- 2011-03-21 CN CN 201110067203 patent/CN102090920A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360879A (en) * | 2000-12-28 | 2002-07-31 | 林智一 | Vertebra fixing reductor |
| CN1965769A (en) * | 2005-10-12 | 2007-05-23 | 比德曼莫泰赫有限公司 | Bone anchoring device |
| CN101816587A (en) * | 2010-04-19 | 2010-09-01 | 天津正天医疗器械有限公司 | Universal pedicle screw for internal fixation of spine |
| CN202010196U (en) * | 2011-03-21 | 2011-10-19 | 丁亮华 | Universal micro-movement vertebral arch pedicle nail |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319105A (en) * | 2011-08-15 | 2012-01-18 | 丁亮华 | Universal elastic torsion pedicle nail |
| CN103070725A (en) * | 2013-01-14 | 2013-05-01 | 北京市富乐科技开发有限公司 | Minimally invasive extension jib pedicle screw |
| CN105615975A (en) * | 2014-11-13 | 2016-06-01 | 无锡市闻泰百得医疗器械有限公司 | Posterior spinal internal fixation screw structure |
| CN105496540A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Iliac screw with bone induction material coating and spine fixing device |
| CN105496540B (en) * | 2016-01-20 | 2019-04-26 | 北京大学深圳医院 | Ilium nail and spinal fixing device with bone induction material coating |
| CN107088085A (en) * | 2017-06-01 | 2017-08-25 | 成都贝施美医疗设备有限公司 | A kind of spinal stabilization device |
| CN112370136A (en) * | 2020-10-20 | 2021-02-19 | 广东施泰宝医疗科技有限公司 | Novel spout pedicle of vertebral arch screw internal fixation system |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |