CN205007021U - Bone screw with height tooth form screw thread - Google Patents
Bone screw with height tooth form screw thread Download PDFInfo
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- CN205007021U CN205007021U CN201520775880.XU CN201520775880U CN205007021U CN 205007021 U CN205007021 U CN 205007021U CN 201520775880 U CN201520775880 U CN 201520775880U CN 205007021 U CN205007021 U CN 205007021U
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- screw thread
- tooth form
- form screw
- thread
- bone
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Abstract
The utility model discloses a bone screw with height tooth form screw thread, including pin fin, screw thread section and screw tail, the one end and the pin fin of screw thread section are connected, and the other end and the screw tail of screw thread section are connected, and the total length of screw thread section is 30 -150mm, the upper portion of pin fin is provided with the hexagonal recess, the screw thread section includes high tooth form screw thread and low tooth form screw thread, and high tooth form screw thread and low tooth form screw thread equidistance interval set up, and the external diameter of high tooth form screw thread is 6.5mm, and the external diameter of low tooth form screw thread is 4.5mm, and the screw thread path of high tooth form screw thread and low tooth form screw thread is 3.2mm, pin fin, screw thread section and screw tail adopt the integrative casting shaping of titanium alloy or stainless steel, the utility model has the advantages of simple structure and reasonable design, can overcome traditional bone screw and easily drop, fixed insecure problem, greatly increased the utility model discloses resistance to plucking on bone is exerted oneself, has reduced the not hard up obscission even of the screw that leads to because of osteoporosis, convenient to use, has promoted the success rate of osteoporosis operation greatly.
Description
Technical field
This utility model relates to a kind of orthopedic medical device, specifically a kind of bone screw with height tooth form screw thread.
Background technology
Along with people's living standard improve constantly, the continuous rising of medical level; aged tendency of population presents ascendant trend; but; osteoporosis becomes the general orthopaedic disease of old people; therefore the continuous rising of fracture patient can also be caused; old people is once fracture; tremendous influence will be brought to its life; due to osteoporotic impact, when traditional bone screw is used in the fracture of old people, usually toner screw can be caused; cause internal fixation operation failure; thus need second operation, considerably increase the misery of patient, extend patient recovery's time.
Utility model content
The purpose of this utility model is the bone screw with height tooth form screw thread providing a kind of good fixing effect, difficult drop-off, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
Have a bone screw for height tooth form screw thread, comprise ailhead, thread segment and nail tail, one end of described thread segment is connected with ailhead, and the other end of thread segment connects with nail WEILIAN; The top of described ailhead is provided with hexagonal groove, and described thread segment comprises high tooth form screw thread and low tooth form screw thread, and the external diameter of high tooth form screw thread is 6.5mm, and the external diameter of low tooth form screw thread is 4.5mm, and the diameter of thread of high tooth form screw thread and low tooth form screw thread is 3.2mm.
As further program of the utility model: the total length of described thread segment is 30-150mm.
As this utility model further scheme: described high tooth form screw thread and low tooth form screw thread are equidistantly spaced.
As this utility model further scheme: described ailhead, thread segment and nail tail all adopt titanium alloy or rustless steel to make.
As this utility model further scheme: described ailhead, thread segment and nail tail are integrated machine-shaping.
As this utility model further scheme: the outer circumference diameter of described ailhead is greater than the external diameter of high tooth form screw thread, and the periphery of ailhead is provided with anti-slip veins.
Compared with prior art, the beneficial effects of the utility model are: this utility model structure is simple, reasonable in design, traditional bone screw can be overcome easily come off, fixing unstable problem, by thread segment being improved to spaced high tooth form screw thread and low tooth form screw thread, make this utility model when screwing in bone fracture place, extruding force is produced to sclerotin, overcome the osteoporosis problem of old people, the sclerotin between high tooth form screw thread and low tooth form screw thread is made to be squeezed and to be reinforced, thus considerably increase the resisting pull out forces of this utility model on bone, decrease the screw loosening even obscission because osteoporosis causes, easy to use, greatly improve the success rate of osteoporosis operation.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Fig. 2 is mounting structure schematic diagram of the present utility model.
Wherein, 1-ailhead; 2-thread segment; 3-height tooth form screw thread; The low tooth form screw thread of 4-; 5-follows closely tail; 6-bone; 7-fracture site.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Refer to Fig. 1-2, a kind of bone screw with height tooth form screw thread, comprise ailhead 1, thread segment 2 and nail tail 5, one end of described thread segment 2 is connected with ailhead 1, and the other end of thread segment 2 is connected with nail tail 5; The top of described ailhead 1 is provided with hexagonal groove, described thread segment 2 comprises high tooth form screw thread 3 and low tooth form screw thread 4, the external diameter of high tooth form screw thread 3 is 6.5mm, and the external diameter of low tooth form screw thread 4 is 4.5mm, and the diameter of thread of high tooth form screw thread 3 and low tooth form screw thread 4 is 3.2mm.
The total length of described thread segment 2 is 30-150mm.
Described high tooth form screw thread 3 and low tooth form screw thread 4 are equidistantly spaced.
Described ailhead 1, thread segment 2 and nail tail 5 all adopt titanium alloy or rustless steel to make.
Described ailhead 1, thread segment 2 and nail tail 5 are integrated casting.
The outer circumference diameter of described ailhead 1 is greater than the external diameter of high tooth form screw thread 3, and the periphery of ailhead 1 is provided with anti-slip veins.
Operation principle of the present utility model is: when Clinical practice, first doctor bores bottom outlet by specific drill bit at the fracture site 7 of patient bone 6, then specific screw tap tapping is used, finally snap in die nut in the hexagonal groove of ailhead 1, rotate die nut, thus make to realize the fixing of fracture 7 in this utility model screw-in patient bone 6; As shown in Figure 2, when this utility model screws in bone 6, certain squeezing action is had to sclerotin between high tooth form screw thread 3 and low thread tooth form 4, sclerotin is between the two reinforced further, thus considerably increase the resisting pull out forces of this utility model on bone 6, decrease the screw loosening even obscission because osteoporosis causes, improve fixed effect, contribute to the fast quick-recovery at patients with fractures place.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (6)
1. one kind has the bone screw of height tooth form screw thread, comprise ailhead (1), thread segment (2) and nail tail (5), it is characterized in that: one end of described thread segment (2) is connected with ailhead (1), the other end of thread segment (2) is connected with nail tail (5); The top of described ailhead (1) is provided with hexagonal groove, described thread segment (2) comprises high tooth form screw thread (3) and low tooth form screw thread (4), the external diameter of high tooth form screw thread (3) is 6.5mm, the external diameter of low tooth form screw thread (4) is 4.5mm, and the diameter of thread of high tooth form screw thread (3) and low tooth form screw thread (4) is 3.2mm.
2. the bone screw with height tooth form screw thread according to claim 1, it is characterized in that, the total length of described thread segment (2) is 30-150mm.
3. the bone screw with height tooth form screw thread according to claim 1, it is characterized in that, described high tooth form screw thread (3) and low tooth form screw thread (4) are equidistantly spaced.
4. the bone screw with height tooth form screw thread according to claim 1, is characterized in that, described ailhead (1), thread segment (2) and nail tail (5) all adopt titanium alloy or rustless steel to make.
5. the bone screw with height tooth form screw thread according to claim 1, is characterized in that, described ailhead (1), thread segment (2) and nail tail (5) are integrated machine-shaping.
6. the bone screw with height tooth form screw thread according to claim 1, it is characterized in that, the outer circumference diameter of described ailhead (1) is greater than the external diameter of high tooth form screw thread (3), and the periphery of ailhead (1) is provided with anti-slip veins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775880.XU CN205007021U (en) | 2015-10-09 | 2015-10-09 | Bone screw with height tooth form screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775880.XU CN205007021U (en) | 2015-10-09 | 2015-10-09 | Bone screw with height tooth form screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205007021U true CN205007021U (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520775880.XU Active CN205007021U (en) | 2015-10-09 | 2015-10-09 | Bone screw with height tooth form screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205007021U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877798A (en) * | 2016-04-06 | 2016-08-24 | 江苏百易得医疗科技有限公司 | Suture anchor and handle thereof |
| CN107260240A (en) * | 2016-04-08 | 2017-10-20 | 北京瑞朗泰科医疗器械有限公司 | Medical holdfast |
| CN113476128A (en) * | 2021-08-23 | 2021-10-08 | 北京市春立正达医疗器械股份有限公司 | Anti-extraction bone screw |
-
2015
- 2015-10-09 CN CN201520775880.XU patent/CN205007021U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877798A (en) * | 2016-04-06 | 2016-08-24 | 江苏百易得医疗科技有限公司 | Suture anchor and handle thereof |
| CN105877798B (en) * | 2016-04-06 | 2019-07-23 | 江苏百易得医疗科技有限公司 | A kind of band line holdfast and its handle |
| CN107260240A (en) * | 2016-04-08 | 2017-10-20 | 北京瑞朗泰科医疗器械有限公司 | Medical holdfast |
| CN107260240B (en) * | 2016-04-08 | 2023-10-03 | 北京瑞朗泰科医疗器械有限公司 | Medical anchor |
| CN113476128A (en) * | 2021-08-23 | 2021-10-08 | 北京市春立正达医疗器械股份有限公司 | Anti-extraction bone screw |
| CN113476128B (en) * | 2021-08-23 | 2022-09-23 | 北京市春立正达医疗器械股份有限公司 | Anti-extraction bone screw |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |