CN103202726A - Pedicle screw - Google Patents
Pedicle screw Download PDFInfo
- Publication number
- CN103202726A CN103202726A CN2013101586025A CN201310158602A CN103202726A CN 103202726 A CN103202726 A CN 103202726A CN 2013101586025 A CN2013101586025 A CN 2013101586025A CN 201310158602 A CN201310158602 A CN 201310158602A CN 103202726 A CN103202726 A CN 103202726A
- Authority
- CN
- China
- Prior art keywords
- nail
- pedicle
- particulate matter
- present
- pedicle screw
- 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.)
- Pending
Links
- 239000013618 particulate matter Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 abstract 2
- 238000010276 construction Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Abstract
The invention discloses a pedicle screw which comprises a screw body. Particulate matters are arranged on the surface of the screw body and the diameter of the particulate matters is 250-500mu m. The pedicle screw disclosed by the invention has the advantages that a shearing effect of the pedicle screw on pedicle can be eliminated and a biological hinge lock structure can be formed on a bone nail interface to enhance the binding force of the bone nail interface.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, relate to a kind of pedicle nail specifically.
Background technology
Pedicle nail generally includes nail seat and nail body, the nail body part all is provided with screw thread usually, screw in the pedicle of vertebral arch of human body during use, but behind this threaded pedicle nail implant into body, the screw thread of nail body surface can produce dissection to sclerotin, this bad shearing force long term can cause the fixation instability of pedicle nail, even causes pedicle nail to lose efficacy.
Summary of the invention
The purpose of this invention is to provide a kind of pedicle nail, it can eliminate pedicle nail to the shear action of pedicle of vertebral arch, and forms biological hinge lock construction at the nail interface, increases the adhesion at nail interface.
In order to realize such scheme, technical solution of the present invention is: a kind of pedicle nail, comprise the nail body, and described nail body surface is provided with particulate matter, and the diameter of particulate matter is 250-500 μ m.
Pedicle nail of the present invention, wherein, the number of plies of described particulate matter is three layers or four layers, the gross thickness of particulate matter is in 1mm.
Pedicle nail of the present invention, wherein, the cross section of described nail body is approximate ellipsoidal, and area of section dwindles from top to bottom gradually.
After adopting such scheme, pedicle nail of the present invention is because the nail body surface is provided with particulate matter, so destruction of reducing the bad shear force of nail interface screw thread, improve the reliability and stability of pedicle nail greatly, simultaneously between particulate matter, form loose structure, be conducive to skeleton and grow in the hole, form biological hinge lock construction, increase the adhesion at nail interface, further improve stability and the reliability of whole fixed structure, realize permanent fixing.
In addition, because the cross section of described nail body is approximate ellipsoidal, be complementary with the pedicle of vertebral arch inwall transverse shape of human body, implant the back at pedicle nail and reduce foreign body sensation.
Description of drawings
Fig. 1 is the structural representation of the embodiment one of pedicle nail of the present invention;
Fig. 2, Fig. 3 are respectively A-A, the B-B profiles of Fig. 1.
The specific embodiment
The embodiment one of pedicle nail of the present invention as shown in Figure 1, comprise nail seat 11, nail body 12, nail body 12 is selected titanium alloy usually for use, and nail body 12 surfaces are provided with particulate matter 121 by the method for sintering or plasma spraying, and the diameter of particulate matter is 250-500 μ m, the number of plies of particulate matter is three layers or four layers, the gross thickness of particulate matter is in 1mm, and mean porosities is more than 45%, shown in Fig. 2,3, the cross section of nail body 12 is approximate ellipsoidal, and area of section dwindles from top to bottom gradually.
During use, pedicle nail of the present invention is implanted vertebra inside, because the pedicle nail cross section is approximate ellipsoidal, be complementary with the transverse shape of human body pedicle of vertebral arch inwall, implant the back at pedicle nail and reduce foreign body sensation, and because the particulate matter that nail body 12 surfaces are provided with replaces original screw thread, reduce the destruction of the bad shear force of nail interface screw thread, making the nail interface reach fixes biology, improve the reliability and stability of pedicle nail greatly, thereby avoid the inefficacy of the fixed structure that the cutting effect of pedicle wall caused because of traditional pedicle nail, between particulate matter, form loose structure simultaneously, be conducive to skeleton and grow in the hole, form biological hinge lock construction, increase the adhesion at nail interface, further improve stability and the reliability of whole fixed structure, realize permanent fixing.
The above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. a pedicle nail comprises nail body (12), and it is characterized in that: described nail body (12) surface is provided with particulate matter (121), and the diameter of particulate matter (121) is 250-500 μ m.
2. pedicle nail according to claim 1, it is characterized in that: the number of plies of described particulate matter (121) is three layers or four layers, and the gross thickness of particulate matter (121) is in 1mm.
3. pedicle nail according to claim 2, it is characterized in that: the cross section of described nail body (12) is approximate ellipsoidal, and area of section dwindles from top to bottom gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101586025A CN103202726A (en) | 2013-05-02 | 2013-05-02 | Pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101586025A CN103202726A (en) | 2013-05-02 | 2013-05-02 | Pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103202726A true CN103202726A (en) | 2013-07-17 |
Family
ID=48750294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101586025A Pending CN103202726A (en) | 2013-05-02 | 2013-05-02 | Pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103202726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109044519A (en) * | 2018-09-14 | 2018-12-21 | 北京爱康宜诚医疗器材有限公司 | pedicle screw |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095643U (en) * | 1990-08-20 | 1992-02-12 | 解放军九七医院 | Multi-hole inner fixing screw |
| CN2790418Y (en) * | 2005-04-06 | 2006-06-28 | 金伟 | Spinal column inrternal fixing device |
| WO2008115318A1 (en) * | 2007-03-21 | 2008-09-25 | The University Of North Carolina At Chapel Hill | Anti-unscrewing and multi-angular fastening apparatuses and methods for surgical bone screw/plate systems |
| US20090062868A1 (en) * | 2005-04-04 | 2009-03-05 | Zimmer Gmbh | Pedicle screw |
| CN101745148A (en) * | 2009-12-31 | 2010-06-23 | 四川大学 | Method for preparing plasma-sprayed three-dimensional porous titanium bioactive coating |
| CN202288439U (en) * | 2011-10-21 | 2012-07-04 | 中国人民解放军第二军医大学 | Plasma spray coated orthopedic screw |
| CN203315066U (en) * | 2013-05-02 | 2013-12-04 | 山东威高骨科材料有限公司 | Pedicle screw |
-
2013
- 2013-05-02 CN CN2013101586025A patent/CN103202726A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095643U (en) * | 1990-08-20 | 1992-02-12 | 解放军九七医院 | Multi-hole inner fixing screw |
| US20090062868A1 (en) * | 2005-04-04 | 2009-03-05 | Zimmer Gmbh | Pedicle screw |
| CN2790418Y (en) * | 2005-04-06 | 2006-06-28 | 金伟 | Spinal column inrternal fixing device |
| WO2008115318A1 (en) * | 2007-03-21 | 2008-09-25 | The University Of North Carolina At Chapel Hill | Anti-unscrewing and multi-angular fastening apparatuses and methods for surgical bone screw/plate systems |
| CN101745148A (en) * | 2009-12-31 | 2010-06-23 | 四川大学 | Method for preparing plasma-sprayed three-dimensional porous titanium bioactive coating |
| CN202288439U (en) * | 2011-10-21 | 2012-07-04 | 中国人民解放军第二军医大学 | Plasma spray coated orthopedic screw |
| CN203315066U (en) * | 2013-05-02 | 2013-12-04 | 山东威高骨科材料有限公司 | Pedicle screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109044519A (en) * | 2018-09-14 | 2018-12-21 | 北京爱康宜诚医疗器材有限公司 | pedicle screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING WEIGAO YAHUA ARTIFICIAL JOINT DEVELOPMENT Free format text: FORMER OWNER: WEIGAO ORTHOPAEDIC MATERIAL CO., LTD., SHANDONG Effective date: 20150505 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 264203 WEIHAI, SHANDONG PROVINCE TO: 101300 SHUNYI, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20150505 Address after: 101300, seven Niu Hui Street, Shunyi District, Beijing Applicant after: Beijing prestige Francis Koo artificial joint development corporation, Ltd. Address before: 264203 No. 26 Xiangjiang street, Weihai tourism resort, Shandong, China Applicant before: Shandong Weigao Orthopaedic Device Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130717 |
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| WD01 | Invention patent application deemed withdrawn after publication |