CN105193489A - Dynamic-pressurizing-locked bone screw and use method thereof - Google Patents
Dynamic-pressurizing-locked bone screw and use method thereof Download PDFInfo
- Publication number
- CN105193489A CN105193489A CN201510592949.XA CN201510592949A CN105193489A CN 105193489 A CN105193489 A CN 105193489A CN 201510592949 A CN201510592949 A CN 201510592949A CN 105193489 A CN105193489 A CN 105193489A
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- CN
- China
- Prior art keywords
- screw
- dynamic
- cover
- locking bone
- core
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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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
Abstract
The invention provides a dynamic-pressurizing-locked bone screw and a use method thereof. The dynamic-pressurizing-locked bone screw comprises a screw sleeve and a screw core, wherein the screw core comprises a top cap, an unthreaded rod and a screw head, the screw sleeve sleeves the periphery of the unthreaded rod and the periphery of the screw head, a gap exists between the screw sleeve and the unthreaded rod, and the screw sleeve is connected with the screw head. Through the dynamic-pressurizing-locked bone screw, which achieves that a fracture site moves almost parallel to the fracture site through fixing lateral cortices, the stress concentration of the root of the screw can be avoided, the screw can be prevented from rupture, and meanwhile, micro friction is provided for the broken ends of a fractured bone so as to faster promote the formation of calluses, and thus, a faster and stable healing process is provided.
Description
Technical field
The present invention relates to field of medical device, specifically a kind of dynamic pressurized locking bone screw for human fracture's internal fixtion and using method thereof.
Background technology
Fracture fixation used clinically is at present general changes thread head lock screw into by initial common button, lock screw gains universal acceptance clinically with its good support performance and bridging performance, locking fixedly has the raising comprising and osteoporotic sclerotin is fixed to strength, and can provide a kind of there is the advantages such as more friendly biomechanics fixture, this facilitate this technology and accepted rapidly clinically.Locking is fixing carries out to comminuted fracture the second stage of union of fracture mode fixedly depending on callus formation biology, and the formation of callus be by sclerite between fine motion stimulate and produce.Second phase union of fracture can be promoted by active or passive motorization.On the contrary, if fracture fixation device is too strong thus prevent the movement between sclerite, then union of fracture will be suppressed.Biomechanics Research finds that locking steel plate is a kind of strong inner fixing device, and it obviously can suppress the motion between sclerite, so that effectively cannot promote the generation of the second stage of union of fracture.Nearest clinical research finds the nonunion rate that may have after fracture around joint is fixed with locking steel plate up to 19%, and this adds people can suppress callus formation worry to the strong degree of the height that locking steel plate device is intrinsic more.Equally, if union of fracture entirely also may not cause the failure of inside-fixture, this is because when lacking bony union, inside-fixture needs to continue to bear load, finally may cause the tired or solid failure of inside-fixture and cause failure.
Summary of the invention
For solving the technical problem of above-mentioned existence, the invention provides a kind of by contralateral cortex fixedly reach fracture site be almost parallel to fracture site motion dynamic pressurized locking bone screw, screw Root Stress can be avoided to concentrate and to prevent screw extraction, simultaneously for fracture site provides trace friction to promote the formation of callus faster, thus provide faster, stable agglutination.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of dynamic pressurized locking bone screw, it comprises screw cover and screw core, and screw core comprises top cap, polished rod, ailhead, and screw cover is nested with in polished rod, ailhead periphery, is provided with space between screw cover and polished rod, and screw cover is connected with ailhead.
Described screw core and screw cover are connected by internal and external threads or the form of interference fit is fixed together, and composition screw cover can do the dynamic elasticity micromotion structure of radial motion along screw core.
Further, screw core shaft end arranges polished rod, ailhead end band external screw thread fit structure or elastic conjunction structure, screw cover is for closing interior hollow structure in one end, its blind end inner band female thread structure or unthreaded hole elastic conjunction structure, screw core and screw cover are connected by internal and external threads or the form of interference fit is fixed together.
Described screw cover end is self tapping self-steering thread head.
Described screw core top cap is taper shaven head or thread head, and the locking of screw cover implant into body distal cortex, the unsettled dynamic clearance of near-end cortex, top cap and steel plate lock.
The using method of dynamic pressurized locking bone screw, step is as follows:
A, be first connected in dynamic pressurized locking bone screw on the side of bone fracture position one end of locking bone fracture plate, as then first admittedly determined Shinbone epiphysis end side by nearly Shinbone epiphysis end, Shinbone epiphysis end adopts common lock screw to fix;
B, to be carried out the pressurization of fracture site offside by forcing screw fixing, carries out broken ends of fractured bone reset to it;
C, finally dynamic pressurized locking bone screw is implanted to other residue screw hole and complete the reduction of the fracture and fix overall process.
Beneficial effect of the present invention is:
This dynamic pressurized locking bone screw is the assembled bone screw that there is micro-elasticity performance inside, by the dynamic structure of screw cover along the radial motion of screw core, for patient provides the micromotion displacement being almost parallel to fracture site, therefore screw Root Stress can be avoided to concentrate and to prevent screw extraction, simultaneously for fracture site provides trace friction to promote the formation of callus faster, thus provide sooner, more stable agglutination, avoid nonunion, there is the advantages such as operation is simple, post-operative recovery is fast.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is this dynamic pressurized locking bone screw design sketch.
Detailed description of the invention
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the present invention.On the contrary, they only with as in appended claims describe in detail, the example of device that aspects more of the present invention are consistent.
Embodiment 1: a kind of dynamic pressurized locking bone screw as shown in drawings, it comprises screw cover 1 and screw core, and screw core comprises top cap 3, polished rod 4, ailhead 5, and screw cover 1 is nested with in polished rod 4, ailhead 5 periphery, be provided with space between screw cover 1 and polished rod 4, screw cover 1 is connected with ailhead 5.
Described screw core and screw cover 1 are fixed together by the form of interference fit, and composition screw cover can do the dynamic elasticity micromotion structure of radial motion along screw core.
Further, screw core shaft end arranges polished rod 4, and ailhead 5 is elastic conjunction structure, and screw cover 1 is for closing interior hollow structure, its blind end inner band unthreaded hole elastic conjunction structure in one end, and screw core and screw cover 1 are fixed together by the form of interference fit.
It is self tapping self-steering thread head that described screw overlaps 1 end,
Described screw core top cap 3 is taper shaven head or thread head, and the locking of screw cover implant into body distal cortex, the unsettled dynamic clearance of near-end cortex, top cap 3 locks with steel plate.
The using method of dynamic pressurized locking bone screw, step is as follows:
A, be first connected in dynamic pressurized locking bone screw on the side of bone fracture position one end of locking bone fracture plate, as then first admittedly determined Shinbone epiphysis end side by nearly Shinbone epiphysis end, Shinbone epiphysis end adopts common lock screw to fix;
B, to be carried out the pressurization of fracture site offside by forcing screw fixing, carries out broken ends of fractured bone reset to it;
C, finally dynamic pressurized locking bone screw is implanted to other residue screw hole and complete the reduction of the fracture and fix overall process.
Embodiment 2: a kind of dynamic pressurized locking bone screw, it comprises screw cover 1 and screw core, and screw core comprises top cap 3, polished rod 4, ailhead 5, and screw cover 1 is nested with in polished rod 4, ailhead 5 periphery, be provided with space between screw cover 1 and polished rod 4, screw cover 1 is connected with ailhead 5.
Described screw core and screw 1 are overlapped the form be connected by internal and external threads and are fixed together, and composition screw cover 1 can do the dynamic elasticity micromotion structure of radial motion along screw core.
Further, screw core shaft end arranges polished rod 4, and ailhead 5 is external thread structure, and screw cover 1 is for closing interior hollow structure, its blind end inner band female thread in one end, and the form that screw core and screw cover 1 are connected by internal and external threads is fixed together.The using method of dynamic pressurized locking bone screw, step is as follows:
A, be first connected in dynamic pressurized locking bone screw on the side of bone fracture position one end of locking bone fracture plate, as then first admittedly determined Shinbone epiphysis end side by nearly Shinbone epiphysis end, Shinbone epiphysis end adopts common lock screw to fix;
B, to be carried out the pressurization of fracture site offside by forcing screw fixing, carries out broken ends of fractured bone reset to it;
C, finally dynamic pressurized locking bone screw is implanted to other residue screw hole and complete the reduction of the fracture and fix overall process.
This dynamic pressurized locking bone screw is the assembled bone screw that there is micro-elasticity performance inside, by the dynamic structure of screw cover along the radial motion of screw core, for patient provides the micromotion displacement being almost parallel to fracture site, therefore screw Root Stress can be avoided to concentrate and to prevent screw extraction, simultaneously for fracture site provides trace friction to promote the formation of callus faster, thus provide sooner, more stable agglutination, avoid nonunion, there is the advantages such as operation is simple, post-operative recovery is fast.
Be this dynamic pressurized locking bone screw design sketch as shown in Figure 2.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a dynamic pressurized locking bone screw, is characterized in that: it comprises screw cover and screw core, and screw core comprises top cap, polished rod, ailhead, and screw cover is nested with in polished rod, ailhead periphery, is provided with space between screw cover and polished rod, and screw cover is connected with ailhead.
2. dynamic pressurized locking bone screw according to claim 1, it is characterized in that: screw core and screw cover are connected by internal and external threads or the form of interference fit is fixed together, composition screw cover can do the dynamic elasticity micromotion structure of radial motion along screw core.
3. dynamic pressurized locking bone screw according to claim 2, it is characterized in that: screw core shaft end arranges polished rod, ailhead end band external screw thread fit structure or elastic conjunction structure, screw cover is for closing interior hollow structure in one end, its blind end inner band female thread structure or unthreaded hole elastic conjunction structure, screw core and screw cover are connected by internal and external threads or the form of interference fit is fixed together.
4. dynamic pressurized locking bone screw according to claim 1 and 2, is characterized in that: described screw cover end is self tapping self-steering thread head.
5. dynamic pressurized locking bone screw according to claim 1 and 2, is characterized in that: described screw core top cap is taper shaven head or thread head, and the locking of screw cover implant into body distal cortex, top cap and steel plate lock.
6. the using method of dynamic pressurized locking bone screw, is characterized in that: step is as follows:
A, be first connected in dynamic pressurized locking bone screw on the side of bone fracture position one end of locking bone fracture plate, as then first admittedly determined Shinbone epiphysis end side by nearly Shinbone epiphysis end, Shinbone epiphysis end adopts common lock screw to fix;
B, to be carried out the pressurization of fracture site offside by forcing screw fixing, carries out broken ends of fractured bone reset to it;
C, finally dynamic pressurized locking bone screw is implanted to other residue screw hole and complete the reduction of the fracture and fix overall process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510592949.XA CN105193489A (en) | 2015-09-18 | 2015-09-18 | Dynamic-pressurizing-locked bone screw and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510592949.XA CN105193489A (en) | 2015-09-18 | 2015-09-18 | Dynamic-pressurizing-locked bone screw and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105193489A true CN105193489A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510592949.XA Pending CN105193489A (en) | 2015-09-18 | 2015-09-18 | Dynamic-pressurizing-locked bone screw and use method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618712A (en) * | 2016-12-29 | 2017-05-10 | 大博医疗科技股份有限公司 | Elastic bone screw |
| CN110585490A (en) * | 2019-09-16 | 2019-12-20 | 上理检测技术(上海)有限公司 | Micro-motion compression steel plate |
| CN112087975A (en) * | 2018-05-09 | 2020-12-15 | 华沙整形外科股份有限公司 | Bone screw and method for manufacturing same |
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| WO2004069065A1 (en) * | 2003-02-10 | 2004-08-19 | Cell Center Cologne Gmbh | Dynamic epiphysial telescopic screw |
| CN2875349Y (en) * | 2006-03-21 | 2007-03-07 | 莫里斯 | Micro-traumatic sliding screw |
| CN102137627A (en) * | 2007-12-17 | 2011-07-27 | 新特斯有限责任公司 | Dynamic bone fixation element and method of using the same |
| CN102697551A (en) * | 2012-05-24 | 2012-10-03 | 浙江科惠医疗器械有限公司 | Dynamic locking screw |
| CN104302238A (en) * | 2012-03-13 | 2015-01-21 | 新特斯有限责任公司 | Dynamic bone fixation element |
| CN104434289A (en) * | 2014-11-28 | 2015-03-25 | 贝尔泰克医疗器械江苏有限公司 | High-strength hollow bone screw |
| CN104825220A (en) * | 2014-02-12 | 2015-08-12 | 爱派司生技股份有限公司 | Sleeve type bone screw |
| CN205007020U (en) * | 2015-09-18 | 2016-02-03 | 山东康盛医疗器械有限公司 | Developments pressurization locking bone screw |
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2015
- 2015-09-18 CN CN201510592949.XA patent/CN105193489A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004069065A1 (en) * | 2003-02-10 | 2004-08-19 | Cell Center Cologne Gmbh | Dynamic epiphysial telescopic screw |
| CN2875349Y (en) * | 2006-03-21 | 2007-03-07 | 莫里斯 | Micro-traumatic sliding screw |
| CN102137627A (en) * | 2007-12-17 | 2011-07-27 | 新特斯有限责任公司 | Dynamic bone fixation element and method of using the same |
| CN104302238A (en) * | 2012-03-13 | 2015-01-21 | 新特斯有限责任公司 | Dynamic bone fixation element |
| CN102697551A (en) * | 2012-05-24 | 2012-10-03 | 浙江科惠医疗器械有限公司 | Dynamic locking screw |
| CN104825220A (en) * | 2014-02-12 | 2015-08-12 | 爱派司生技股份有限公司 | Sleeve type bone screw |
| CN104434289A (en) * | 2014-11-28 | 2015-03-25 | 贝尔泰克医疗器械江苏有限公司 | High-strength hollow bone screw |
| CN205007020U (en) * | 2015-09-18 | 2016-02-03 | 山东康盛医疗器械有限公司 | Developments pressurization locking bone screw |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618712A (en) * | 2016-12-29 | 2017-05-10 | 大博医疗科技股份有限公司 | Elastic bone screw |
| CN106618712B (en) * | 2016-12-29 | 2019-03-15 | 大博医疗科技股份有限公司 | A kind of elasticity bone screws |
| CN112087975A (en) * | 2018-05-09 | 2020-12-15 | 华沙整形外科股份有限公司 | Bone screw and method for manufacturing same |
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| CN110585490A (en) * | 2019-09-16 | 2019-12-20 | 上理检测技术(上海)有限公司 | Micro-motion compression steel plate |
| CN110585490B (en) * | 2019-09-16 | 2022-05-20 | 上理检测技术(上海)有限公司 | Micro-motion pressurizing steel plate |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
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| RJ01 | Rejection of invention patent application after publication |