CN202458652U - Dynamic locking screw - Google Patents
Dynamic locking screw Download PDFInfo
- Publication number
- CN202458652U CN202458652U CN2012200332376U CN201220033237U CN202458652U CN 202458652 U CN202458652 U CN 202458652U CN 2012200332376 U CN2012200332376 U CN 2012200332376U CN 201220033237 U CN201220033237 U CN 201220033237U CN 202458652 U CN202458652 U CN 202458652U
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- China
- Prior art keywords
- hole
- diameter
- connecting portion
- polished rod
- locking screw
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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.)
- Expired - Lifetime
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Abstract
The utility model relates to the technical field of connection and fixation of fracture sites during an orthopaedic surgery, in particular to a dynamic locking screw. The dynamic locking screw comprises a tapered threaded nail shaft and a threaded shaft sleeve capable of being inserted into the tapered threaded nail shaft, wherein the tapered threaded nail shaft comprises a head part, a polish rod and a connecting part, wherein the diameter of the polish rod is smaller than that of the connecting part; and a blind hole is formed in the threaded shaft sleeve and comprises an upper hole and a middle hole which are matched with the polish rod and a lower hole matched with the connecting part, wherein the diameter of the lower hole is smaller than that of the middle hole. The dynamic locking screw can adjust the rigidity of a locking plate steel, enables the load of the locking plate steel to be distributed more evenly, can transmit motion in the parallel direction, and helps biological bone healing; and moreover, the final motion of a locking bone plate system in the plate direction can promote the callus forming in a peripheral direction of bones.
Description
Technical field
Fracture site connected fixed technical field when this utility model related to bone surgery, especially a kind of dynamic lock screw.
Background technology
The lock screw that cooperates with the metal locking blade plate at present all is single part, and this lock screw is packed into behind the lockplate, with lockplate, one that the skeleton composition is firm, does not promptly have relative motion between lockplate and connection skeleton, is unfavorable for the healing of skeleton.
The utility model content
The technical problem that this utility model will solve is: overcome the deficiency in the prior art, a kind of dynamic lock screw is provided.
This utility model solves the technical scheme that its technical problem adopted: a kind of dynamic lock screw; Comprise taper thread nail axle and the threaded sleeve that can insert taper thread nail axle; Taper thread nail axle has head, polished rod and connecting portion, and the diameter of polished rod has blind hole less than the diameter of connecting portion in the threaded sleeve; Blind hole is formed by the last hole that is complementary with polished rod, mesopore with the following hole that connecting portion is complementary, and the diameter in following hole is less than the diameter of mesopore.
Leave the gap between described polished rod and mesopore, the following hole.
Described connecting portion is fixedly connected by welding with following hole.
Described head, polished rod and connecting portion are structure as a whole.
The beneficial effect of this utility model is: the rigidity of this utility model adjustment locking steel plate system; Load is more evenly distributed; Can transmit the motion of parallel direction; Help biological bone healing, the locking bone fracture plate system can promote the callus of skeleton circumferencial direction to generate along the fine motion of steel plate direction.
Description of drawings
Below in conjunction with accompanying drawing and embodiment this utility model is further specified.
Fig. 1 is the structural representation of this utility model.
Fig. 2 is the structural representation of this utility model taper thread nail axle.
Fig. 3 is the structural representation of this utility model threaded sleeve.
Among the figure: 1. taper thread nail axle, 11. heads, 12. polished rods, 13. connecting portions, 2. threaded sleeve, 21. blind holes, on 211. the hole, 212. mesopores, 213. times holes.
The specific embodiment
Combine accompanying drawing that this utility model is further described now.The sketch map that these accompanying drawings are simplification is only explained the basic structure of this utility model in a schematic way, so it only shows the formation relevant with this utility model.
Like Fig. 1, Fig. 2 and dynamic lock screw shown in Figure 3; Comprise taper thread nail axle 1 and the threaded sleeve 2 that can insert taper thread nail axle 1, taper thread nail axle 1 has head 11, polished rod 12 and connecting portion 13, and head 11, polished rod 12 are structure as a whole with connecting portion 13; The diameter of polished rod 12 is less than the diameter of connecting portion 13; Have blind hole 21 in the threaded sleeve 2, blind hole 21 is formed by the last hole 211 that is complementary with polished rod 12, mesopore 212 with the following hole 213 of connecting portion 13 couplings, and the diameter in following hole 213 is less than the diameter of mesopore 212; Connecting portion 13 is fixedly connected by welding with following hole 213, leaves the gap between polished rod 12 and mesopore 212, the following hole 213.
After this utility model is screwed into corresponding lockplate; Taper thread nail axle 1 connects as one with lockplate; Threaded sleeve 2 is connected as a single entity with skeleton, owing to leave certain clearance between polished rod 12 and mesopore 212, time hole 213, so between lockplate and the skeleton certain relative motion can be arranged.
Above-mentioned embodiment is only for explaining the technical conceive and the characteristics of this utility model; Its purpose is to let the personage that is familiar with this technology can understand the content of this utility model and implements; Can not limit the protection domain of this utility model with this; All equivalences of being done according to this utility model spirit change or modify, and all should be encompassed in the protection domain of this utility model.
Claims (4)
1. dynamic lock screw; It is characterized in that: comprise taper thread nail axle (1) and can insert the threaded sleeve (2) that taper thread is followed closely axle (1); Taper thread nail axle (1) has head (11), polished rod (12) and connecting portion (13); The diameter of polished rod (12) is less than the diameter of connecting portion (13); Have blind hole (21) in the threaded sleeve (2), blind hole (21) is formed by the last hole (211) that is complementary with polished rod (12), mesopore (212) with the following hole (213) that connecting portion (13) is complementary, and the diameter in following hole (213) is less than the diameter of mesopore (212).
2. dynamic lock screw according to claim 1 is characterized in that: leave the gap between described polished rod (12) and mesopore (212), the following hole (213).
3. dynamic lock screw according to claim 1 is characterized in that: described connecting portion (13) is fixedly connected by welding with following hole (213).
4. dynamic lock screw according to claim 1 is characterized in that: described head (11), polished rod (12) are structure as a whole with connecting portion (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200332376U CN202458652U (en) | 2012-02-02 | 2012-02-02 | Dynamic locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200332376U CN202458652U (en) | 2012-02-02 | 2012-02-02 | Dynamic locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202458652U true CN202458652U (en) | 2012-10-03 |
Family
ID=46906860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200332376U Expired - Lifetime CN202458652U (en) | 2012-02-02 | 2012-02-02 | Dynamic locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202458652U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN105342685A (en) * | 2015-11-19 | 2016-02-24 | 江苏百易得医疗科技有限公司 | Dynamic locking screw and dynamic locking bone plate system |
| CN106618712A (en) * | 2016-12-29 | 2017-05-10 | 大博医疗科技股份有限公司 | Elastic bone screw |
-
2012
- 2012-02-02 CN CN2012200332376U patent/CN202458652U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN105342685A (en) * | 2015-11-19 | 2016-02-24 | 江苏百易得医疗科技有限公司 | Dynamic locking screw and dynamic locking bone plate system |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |