CN104398327A - Locking screw provided with porous surface and used for bone connection and fixation - Google Patents
Locking screw provided with porous surface and used for bone connection and fixation Download PDFInfo
- Publication number
- CN104398327A CN104398327A CN201410786110.5A CN201410786110A CN104398327A CN 104398327 A CN104398327 A CN 104398327A CN 201410786110 A CN201410786110 A CN 201410786110A CN 104398327 A CN104398327 A CN 104398327A
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- screw
- bone
- locking screw
- porous
- axostylus axostyle
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Abstract
The invention relates to a locking screw provided with a porous surface and used for bone connection and fixation, and aims to solve the technical problem of bone absorption between the locking screw and residual bone in a long-term use process of the locking screw, so that the locking screw and the bone are tightly combined and are not loosened. The locking screw is characterized by comprising a screw head part, a screw neck part and a shaft bar which are sequentially connected into a whole from top to bottom, wherein the screw head part adopts an inverted circular truncated cone shape which is big end up, the screw neck part is cylindrical, the lower bottom surface of the circular truncated cone has the equivalent area with the cylinder, threads are formed on the side surfaces of the screw head part and the screw neck part respectively, and a porous layer with the aperture of 50-800 mu m is arranged on the side surface of the shaft bar. Besides, the locking screw is made of a titanium alloy, or pure titanium and the like. The locking screw provided with the porous surface and used for bone connection and fixation has the benefits as follows: pitches of the threads at the screw head part and the screw neck part of the locking screw are different, the locking effect is achieved accordingly, the porous part on the side surface of the shaft bar and the host bone have osseointegration in a shorter time, so that the screw and the host bone are tightly combined, and long-term stability is achieved.
Description
Technical field
The present invention relates to a kind of skeleton and be connected and fixed the lock screw using band porous surface, particularly relate to the lock screw in Cranial defect medical treatment art, the artificial prosthesis of implantation and remaining skeleton being connected and fixed middle use, genus bone surgery set technical field.
Background technology
Skeleton causes Cranial defect due to the reason such as tumor, wound, usually needs to adopt screw to be fixed on by artificial prosthesis on remaining skeleton, and this kind of screw is as temporary fixed use a bit, and some as long-term fixing use, will become Permanent implantation thing.Relative to the screw of routine, lock screw not easily loosens, good fixing effect.But the biocompatibility between lock screw and skeleton or poor, can not accurately combine, life-time service process Zhong Ding road easily loosens.In addition owing to being subject to excessive stress, likely there is the phenomenon of bone resorption with the skeleton of lock screw bound fraction.
Develop the good biocompatibility between a kind of and skeleton, the bone surgery lock screw of combining closely between energy and skeleton is the numerous scientific and technical personnel direction of making great efforts in the industry.
Summary of the invention
The object of this invention is to provide a kind of skeleton and be connected and fixed the lock screw using band porous surface, solve in life-time service process, the technical problem of bone resorption occurs between lock screw and the skeleton of remnants, and making to combine closely between lock screw and skeleton does not loosen.
In order to achieve the above object, the technical scheme that Bian gets is: a kind of skeleton is connected and fixed the lock screw with band porous surface, comprise screw head, screw cervical region and axostylus axostyle, described screw head, screw cervical region and axostylus axostyle are in turn connected into one from top to bottom, it is characterized in that: described screw head big up and small down rounding mesa-shaped, screw cervical region are cylindric, the bottom surface of described round platform and cylinder homalographic, described screw head and described screw cervical region side surface are equipped with screw thread respectively, and described axostylus axostyle side is equipped with the porous layer that aperture is 50-800 μm.
The surface of described axostylus axostyle is porous layer, and the axle center of described axostylus axostyle is physical layer, and described physical layer is placed in described porous layer; Or described axostylus axostyle entirety is porous layer.
The depth of described porous layer and pore size are that use " 3 D-printing " technology control printing forms.
Described lock screw material is titanium alloy or pure titanium or rustless steel or vitallium or PEEK or PEKK.
The invention has the beneficial effects as follows: the screw head screw thread of described lock screw and the pitch of screw neck thread different, play locking effect, can there is Integrated implant with host bone in the porous part of axostylus axostyle side surface, reach screw and host bone is combined closely in the short period of time, steady in a long-term.
Accompanying drawing explanation
Illustrate that the invention will be further described with detailed description of the invention example below by accompanying drawing.
Fig. 1 is the lock screw structural representation that a kind of skeleton is connected and fixed with band porous surface.
Fig. 2 is the tapered structural representation of Fig. 1 central shaft rod surface porous layer.
Fig. 3 is the overall honeycomb sandwich schematic diagram for aperture 50-800um of described axostylus axostyle.
In figure: 1-screw head; 2-screw cervical region; 3-axostylus axostyle; 4-porous layer; 5-physical layer.
Detailed description of the invention
Fig. 1 is the lock screw structural representation that a kind of skeleton is connected and fixed with band porous surface.Illustrate a kind of skeleton and be connected and fixed the lock screw using band porous surface, comprise screw head 1, screw cervical region 2 and axostylus axostyle 3, described screw head 1, screw cervical region 2 and axostylus axostyle 3 are in turn connected into one from top to bottom, it is characterized in that: described screw head 1 big up and small down rounding mesa-shaped, described screw cervical region 2 are in cylindric, the bottom surface of described round platform and cylinder homalographic, described screw head 1 and described screw cervical region 2 side surface are equipped with screw thread respectively, and described axostylus axostyle 3 side is equipped with the porous layer 4 that aperture is 50-800 μm.
The axle center of described axostylus axostyle 3 is physical layer 5, and described physical layer 5 is placed in described porous layer 4 (it is tapered that Fig. 1 porous layer 4 and physical layer 5 are porous layer 4 shown in cylindric, Fig. 2); Or described axostylus axostyle 3 entirety is porous layer 4(Fig. 3).
The depth of described porous layer and pore size are that use " 3 D-printing " technology is controlled, and use powdery metal or plastics etc. can jointing material, carry out constructed object by the mode successively printed.
Described lock screw material is titanium alloy or pure titanium or rustless steel or vitallium or PEEK or PEKK.
Claims (3)
1. a skeleton is connected and fixed the lock screw using band porous surface, comprise screw head, screw cervical region and axostylus axostyle, described screw head, screw cervical region and axostylus axostyle are in turn connected into one from top to bottom, it is characterized in that: described screw head big up and small down rounding mesa-shaped, screw cervical region are cylindric, the bottom surface of described round platform and cylinder homalographic, described screw head and described screw cervical region side surface are equipped with screw thread respectively, and described axostylus axostyle side is equipped with the porous layer that aperture is 50-800 μm.
2. a kind of skeleton is connected and fixed the lock screw with band porous surface according to claim 1, and it is characterized in that: the surface of described axostylus axostyle is porous layer, the axle center of described axostylus axostyle is physical layer, and described physical layer is placed in described porous layer; Or described axostylus axostyle entirety is porous layer.
3. a kind of skeleton is connected and fixed the lock screw with band porous surface according to claim 1, it is characterized in that: described lock screw material is titanium alloy or pure titanium or rustless steel or vitallium or PEEK or PEKK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786110.5A CN104398327A (en) | 2014-12-18 | 2014-12-18 | Locking screw provided with porous surface and used for bone connection and fixation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410786110.5A CN104398327A (en) | 2014-12-18 | 2014-12-18 | Locking screw provided with porous surface and used for bone connection and fixation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104398327A true CN104398327A (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410786110.5A Pending CN104398327A (en) | 2014-12-18 | 2014-12-18 | Locking screw provided with porous surface and used for bone connection and fixation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104398327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758042A (en) * | 2015-04-20 | 2015-07-08 | 吴志宏 | Bone screw of three-dimensional through porous structure |
| CN104799932A (en) * | 2015-04-14 | 2015-07-29 | 西安交通大学 | Porous structure bone cement screw design and manufacturing method thereof |
Citations (9)
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| CN2095643U (en) * | 1990-08-20 | 1992-02-12 | 解放军九七医院 | Multi-hole inner fixing screw |
| CN1846643A (en) * | 2006-05-15 | 2006-10-18 | 蒋谊康 | Locking bone screw |
| US20070161985A1 (en) * | 2005-12-05 | 2007-07-12 | Kentomia, Llc . | Screws configured to engage bones, and methods of attaching implants to skeletal regions |
| CN201481541U (en) * | 2009-08-21 | 2010-05-26 | 武汉德骼拜尔外科植入物有限公司 | Self-drilling locking type screw |
| CN101778604A (en) * | 2007-08-13 | 2010-07-14 | 新特斯有限责任公司 | Highly-versatile variable-angle bone plate system |
| CN201564593U (en) * | 2009-09-15 | 2010-09-01 | 上海交通大学医学院附属第九人民医院 | Dynamic hip screw and device for enhancement of fracture fixation |
| CN101972164A (en) * | 2010-11-18 | 2011-02-16 | 刘忠军 | Bone screw with high holding force (high bonding force) |
| CN102429716A (en) * | 2011-12-19 | 2012-05-02 | 北京爱康宜诚医疗器材股份有限公司 | Integrated-type internal set screw for vertebral column |
| CN204318980U (en) * | 2014-12-18 | 2015-05-13 | 上海晟实医疗器械科技有限公司 | A kind of skeleton is connected and fixed the lock screw with band porous surface |
-
2014
- 2014-12-18 CN CN201410786110.5A patent/CN104398327A/en active Pending
Patent Citations (9)
| 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 |
| US20070161985A1 (en) * | 2005-12-05 | 2007-07-12 | Kentomia, Llc . | Screws configured to engage bones, and methods of attaching implants to skeletal regions |
| CN1846643A (en) * | 2006-05-15 | 2006-10-18 | 蒋谊康 | Locking bone screw |
| CN101778604A (en) * | 2007-08-13 | 2010-07-14 | 新特斯有限责任公司 | Highly-versatile variable-angle bone plate system |
| CN201481541U (en) * | 2009-08-21 | 2010-05-26 | 武汉德骼拜尔外科植入物有限公司 | Self-drilling locking type screw |
| CN201564593U (en) * | 2009-09-15 | 2010-09-01 | 上海交通大学医学院附属第九人民医院 | Dynamic hip screw and device for enhancement of fracture fixation |
| CN101972164A (en) * | 2010-11-18 | 2011-02-16 | 刘忠军 | Bone screw with high holding force (high bonding force) |
| CN102429716A (en) * | 2011-12-19 | 2012-05-02 | 北京爱康宜诚医疗器材股份有限公司 | Integrated-type internal set screw for vertebral column |
| CN204318980U (en) * | 2014-12-18 | 2015-05-13 | 上海晟实医疗器械科技有限公司 | A kind of skeleton is connected and fixed the lock screw with band porous surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799932A (en) * | 2015-04-14 | 2015-07-29 | 西安交通大学 | Porous structure bone cement screw design and manufacturing method thereof |
| CN104799932B (en) * | 2015-04-14 | 2017-04-26 | 西安交通大学 | Porous structure bone cement screw design and manufacturing method thereof |
| CN104758042A (en) * | 2015-04-20 | 2015-07-08 | 吴志宏 | Bone screw of three-dimensional through porous structure |
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| CB02 | Change of applicant information |
Address after: 201112 Room 102B, Building 2, No. 3576 Zhaolou Road, Minhang District, Shanghai Applicant after: Kuanyue Xinsheng Medical Technology (Shanghai) Co.,Ltd. Address before: Room 102, Building 2, No. 320 Xingda Road, Pujiang Town, Minhang District, Shanghai, 201102 Applicant before: THYTEC SHANGHAI Co.,Ltd. |
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