CN205007020U - Developments pressurization locking bone screw - Google Patents
Developments pressurization locking bone screw Download PDFInfo
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- CN205007020U CN205007020U CN201520721045.8U CN201520721045U CN205007020U CN 205007020 U CN205007020 U CN 205007020U CN 201520721045 U CN201520721045 U CN 201520721045U CN 205007020 U CN205007020 U CN 205007020U
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- screw
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- polished rod
- screw cover
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Abstract
The utility model provides a developments pressurization locking bone screw, it includes screw cover and screw core, the screw core includes the hood, the polished rod, the pin fin, the screw ways is put at the polished rod, the pin fin is peripheral, be provided with the space between screw cover and the polished rod, the screw cover is connected with the pin fin, the developments pressurization locking bone screw that reach fracture position almost be on a parallel with fracture position motion is fixed through offside cortex, can avoid screw root stress concentration to prevent the screw fracture, provide the formation of the promotion poroma that the trace friction is faster simultaneously for the fracture broken ends of fractured bone, thereby provide faster, stable healing process.
Description
Technical field
This utility model relates to field of medical device, specifically a kind of dynamic pressurized locking bone screw for human fracture's internal fixtion.
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, this utility model provide 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 scheme that this utility model adopts 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.
The beneficial effects of the utility model are:
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 this utility model example structure schematic diagram.
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 this utility model.On the contrary, they only with as in appended claims describe in detail, the example of device that aspects more of the present utility model 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.
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.
Above-described this utility model embodiment, does not form the restriction to this utility model protection domain.Any do within spirit of the present utility model and principle amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520721045.8U CN205007020U (en) | 2015-09-18 | 2015-09-18 | Developments pressurization locking bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520721045.8U CN205007020U (en) | 2015-09-18 | 2015-09-18 | Developments pressurization locking bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205007020U true CN205007020U (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520721045.8U Active CN205007020U (en) | 2015-09-18 | 2015-09-18 | Developments pressurization locking bone screw |
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| Country | Link |
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| CN (1) | CN205007020U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193489A (en) * | 2015-09-18 | 2015-12-30 | 山东康盛医疗器械有限公司 | Dynamic-pressurizing-locked bone screw and use method thereof |
| CN108464859A (en) * | 2018-04-17 | 2018-08-31 | 上海市第六人民医院 | A kind of dynamical feedback fixed system |
| 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 |
| WO2023178321A3 (en) * | 2022-03-18 | 2023-11-30 | Krumme John F | Dynamic compression fixation devices |
-
2015
- 2015-09-18 CN CN201520721045.8U patent/CN205007020U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193489A (en) * | 2015-09-18 | 2015-12-30 | 山东康盛医疗器械有限公司 | Dynamic-pressurizing-locked bone screw and use method thereof |
| CN108464859A (en) * | 2018-04-17 | 2018-08-31 | 上海市第六人民医院 | A kind of dynamical feedback fixed system |
| 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 |
| US11857233B2 (en) | 2018-05-09 | 2024-01-02 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| WO2023178321A3 (en) * | 2022-03-18 | 2023-11-30 | Krumme John F | Dynamic compression fixation devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 9, Nanliu Street, Dawenkou Industrial Park, Daiyue District, Tai'an City, Shandong Province, 271000 Patentee after: Shandong Kangsheng Medical Device Co.,Ltd. Address before: 271000 north of Dawenkou gypsum Industrial Park, Tai'an City, Shandong Province Patentee before: SHANDONG KANGSHENG MEDICAL EQUIPMENT Co.,Ltd. |