CN203029363U - Threaded spicule - Google Patents
Threaded spicule Download PDFInfo
- Publication number
- CN203029363U CN203029363U CN 201220711111 CN201220711111U CN203029363U CN 203029363 U CN203029363 U CN 203029363U CN 201220711111 CN201220711111 CN 201220711111 CN 201220711111 U CN201220711111 U CN 201220711111U CN 203029363 U CN203029363 U CN 203029363U
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- China
- Prior art keywords
- spicule
- threaded
- screw thread
- blade
- drill bit
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- Expired - Lifetime
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Abstract
The utility model discloses a threaded spicule. The threaded spicule is formed by an end portion drill type blade portion, a thread portion, a middle portion cylinder portion, and a tail portion trigone port portion in an integration mode. In the process of surgeries of fracture fixation, deformity correction of bones and joints and limb lengthening and the like, the threaded spicule has the advantages of being light and fast in cutting and chip removing, good in drilling capacity, capable of saving energy, having certain rigidity, and achieving the effects of self-tapping and self-drilling. As to cortical bones and spongy bones, a screw tap is unnecessary to be allocated, so that the threaded spicule can be easily twisted. No gaps exist between the bones and the threaded spicule, blood can not filter into medullary space, and therefore infection is avoided. In the process of use, the threaded spicule can be matched with an electric drill and a handle to use. The threaded spicule has the advantages of being convenient and fast, reasonable in structure, complete in function, simple to use, reliable in fixation, excellent in mechanical performance and applicable to a department of orthopedics to clinically popularize to use.
Description
Technical field
This utility model belongs to medical instruments field, refers to that especially a kind of and exterior fixation bracket unites use, is used for the screw thread spicule of fracture fixation, B﹠J abnormity orthopedics and limb lengthening.
Background technology
Extremity fracture is medically common sick kind of bone injury, adopts external fixing mode to treat more.It is one of effective Therapeutic Method of set a broken bone that external fixer and spicule are used in combination.The form of spicule has (1) square tail annular groove screw thread spicule-China Patent No.: 200820068511.7(sees Fig. 1), its threaded portion design zero draft can be gapped between bone and the spicule, might can infilter in the pulp cavity by blood, causes infection.(2) metal spicule-China Patent No.: 201120380285.8(sees Fig. 2) blade do not adopt the drill bit formula, can not realize that self tapping is from the function of boring.Bar portion does not have screw thread, can be gapped between bone and the spicule, might can infilter in the pulp cavity by blood, and cause infection.(3) hospital handheld metal spicule-China Patent No.: 200620107643.7(sees Fig. 3), be unworthy of electric drill, operation is effort.Blade does not adopt the drill bit formula, can not realize that self tapping is from the function of boring.Bar portion does not have screw thread, can be gapped between bone and the spicule, might can infilter in the pulp cavity by blood, and cause infection.
The utility model content
The purpose of this utility model is to provide a kind of screw thread spicule, has overcome the deficiencies in the prior art, the effect that reach multiple functional when being used in combination with external fixer, construct rationally, simply use, fix reliably, mechanical property is superior.
For achieving the above object, this utility model is by the following technical solutions:
A kind of screw thread spicule is characterized in that it comprises:
End drill bit formula blade, described end drill bit formula blade comprises head and blade;
Threaded portion, described threaded portion are threaded cylinder, and described threaded portion is positioned at described blade end, and with described end drill bit formula blade concentric, described screw thread is that form of thread is the taper thread of isoceles triangle type;
The middle part barrel portion, described middle part cylinder part is divided into cylinder, and described middle part barrel portion is positioned at described threaded portion screw tip, with described threaded portion concentric;
Afterbody rhizoma sparganic interface section, described afterbody rhizoma sparganic interface section is the cylinder that cross section has rhizoma sparganic, described afterbody rhizoma sparganic interface section is positioned at described middle part barrel portion end, with described middle part barrel portion concentric;
Described end drill bit formula blade, described threaded portion, described middle part barrel portion and described afterbody rhizoma sparganic interface section are one-body molded.
Described head be the self tapping of drill bit formula from apex point, described blade is the drill bit formula, described blade has front end helical angle B, angle, rear end C and lifting angle D; The tapering of the front threads of spicule is A.
Described taper angles A is 0.5-1 °.
Described front end helical angle B is 26-28 °.
Described rear end angle C is 26-30 °.
Described lifting angle D is 10-15 °.
Described threaded portion screw thread finishes up gradually, is connected with the transition of intermediate cylindrical part.
The beneficial effects of the utility model are: this utility model is when operations such as fracture fixation, B﹠J abnormity orthopedics and limb lengthening, make smear metal, chip removal brisk, laborsaving, and this utility model have certain intensity, have good boring ability, realize that self tapping is from the effect of boring.For cortical bone, spongy bone, do not need the wire distribution awl, can easily be screwed into.Very close to each other between bone and this utility model, blood can not infilter in the pulp cavity, avoids infection.This utility model in use, but distribution bores and the handle use, convenient and swift.Therefore reasonable, multiple functional, the simple use of this utility model structure, fixing reliable, mechanical property is superior, be suitable for the orthopaedics clinical expansion and use.
Description of drawings
Fig. 1 is the structural representation of prior art square tail annular groove screw thread spicule.
Fig. 2 is the structural representation of prior art metal spicule.
Fig. 3 is the structural representation of prior art hospital handheld metal spicule.
Fig. 4 is the overall structure sketch map of this utility model one preferred embodiment.
Fig. 5 is the concrete structural representation of Fig. 4.
Fig. 6 is Fig. 5 K-K sectional structure sketch map.
Fig. 7 is the head structure for amplifying sketch map that spicule is looked on Fig. 5 right side.
Fig. 8 is Fig. 5 F-F sectional structure sketch map.
Fig. 9 is Fig. 5 E-E sectional structure sketch map.
Drawing reference numeral: 1: blade; 11: head; 2: threaded portion; 3: the middle part barrel portion; 4: afterbody rhizoma sparganic interface section.
The specific embodiment
Below only with embodiment the enforcement aspect that this utility model is possible is described, however be not in order to limit the category of this utility model institute desire protection, give earlier chat bright.
See also Fig. 4--shown in Figure 9, the screw thread spicule of this utility model one preferred embodiment, it is by end drill bit formula blade 1, and threaded portion 2, middle part barrel portion 3, afterbody rhizoma sparganic interface section 4 are one-body molded.
See also Fig. 5, Fig. 7, Fig. 9, described end drill bit formula blade 1 comprises head 11.And the self tapping that described head 11 is the drill bit formula is from apex point, described head be the self tapping of drill bit formula from apex point, described blade is the drill bit formula, described blade has front end helical angle B, angle, rear end C and lifting angle D; The tapering of the front threads of spicule is A.
Described taper angles A is 0.5-1 °.
Described front end helical angle B is 26-28 °.
Described rear end angle C is 26-30 °.
Described lifting angle D is 10-15 °.
See also Fig. 4, described middle part cylinder part 3 is cylinder, and described middle part barrel portion 3 is positioned at described threaded portion 2 screw tips, with described threaded portion 2 concentrics.And described threaded portion 2 screw threads finish up gradually, are connected with 3 transition of intermediate cylindrical part.
See also Fig. 6, described afterbody rhizoma sparganic interface section 4 has the cylinder of rhizoma sparganic for cross section, and described afterbody rhizoma sparganic interface section 4 is positioned at described middle part barrel portion 3 ends, with described middle part barrel portion 3 concentrics.
This utility model has rhizoma sparganic because afterbody rhizoma sparganic interface section 4 has cross section when operations such as fracture fixation, B﹠J abnormity orthopedics and limb lengthening, can bore use by first distribution, convenient and swift, approach all be screwed into after, but tennis partner's handle use, avoid transition to be screwed into.When cooperating electric drill to use, because described blade 12 has front end helical angle, anterior angle and angle, rear flank and lifting angle, make smear metal, chip removal brisk, laborsaving, and have certain intensity, have good boring ability, and head 11 is the self tapping effect that oneself bores from apex point realization self tapping of drill bit formula.For cortical bone, spongy bone, do not need the wire distribution awl, can easily be screwed into.Because described threaded portion 2 screw threads are taper thread, make when being screwed into sclerotin, if withdrawing not, very close to each other between bone and this utility model, blood can not infilter in the pulp cavity, avoids infection.The diameter of thread is bigger, and but the tooth height is less, makes its intensity higher, during clinical use the part screw thread can expose external, frangibility not.Therefore reasonable, multiple functional, the simple use of this utility model structure, fixing reliable, mechanical property is superior, be suitable for the orthopaedics clinical expansion and use.
Claims (7)
1. screw thread spicule is characterized in that it comprises:
End drill bit formula blade, described end drill bit formula blade comprises head and blade;
Threaded portion, described threaded portion are threaded cylinder, and described threaded portion is positioned at described blade end, and with described end drill bit formula blade concentric, described screw thread is that form of thread is the taper thread of isoceles triangle type;
The middle part barrel portion, described middle part cylinder part is divided into cylinder, and described middle part barrel portion is positioned at described threaded portion screw tip, with described threaded portion concentric;
Afterbody rhizoma sparganic interface section, described afterbody rhizoma sparganic interface section is the cylinder that cross section has rhizoma sparganic, described afterbody rhizoma sparganic interface section is positioned at described middle part barrel portion end, with described middle part barrel portion concentric;
Described end drill bit formula blade, described threaded portion, described middle part barrel portion and described afterbody rhizoma sparganic interface section are one-body molded.
2. screw thread spicule according to claim 1 is characterized in that, described head be the self tapping of drill bit formula from apex point, described blade is the drill bit formula, described blade has front end helical angle B, angle, rear end C and lifting angle D; The tapering of the front threads of spicule is A.
3. screw thread spicule according to claim 2 is characterized in that, described taper angles A is 0.5-1 °.
4. screw thread spicule according to claim 2 is characterized in that, described front end helical angle B is 26-28 °.
5. screw thread spicule according to claim 2 is characterized in that, described rear end angle C is 26-30 °.
6. screw thread spicule according to claim 2 is characterized in that, described lifting angle D is 10-15 °.
7. according to the arbitrary described screw thread spicule of claim 1-6, it is characterized in that described threaded portion screw thread finishes up gradually, be connected with the transition of intermediate cylindrical part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220711111 CN203029363U (en) | 2012-12-20 | 2012-12-20 | Threaded spicule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220711111 CN203029363U (en) | 2012-12-20 | 2012-12-20 | Threaded spicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203029363U true CN203029363U (en) | 2013-07-03 |
Family
ID=48681512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220711111 Expired - Lifetime CN203029363U (en) | 2012-12-20 | 2012-12-20 | Threaded spicule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203029363U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596065A (en) * | 2016-02-22 | 2016-05-25 | 运怡（北京）医疗器械有限公司 | Protective bone needle |
| CN108186103A (en) * | 2018-02-28 | 2018-06-22 | 中国人民解放军陆军军医大学第附属医院 | Joint fusion fixing glue |
-
2012
- 2012-12-20 CN CN 201220711111 patent/CN203029363U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596065A (en) * | 2016-02-22 | 2016-05-25 | 运怡（北京）医疗器械有限公司 | Protective bone needle |
| CN108186103A (en) * | 2018-02-28 | 2018-06-22 | 中国人民解放军陆军军医大学第附属医院 | Joint fusion fixing glue |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180820 Address after: 100176 1 Beijing economic and Technological Development Zone 11 11 Jinghai road. Patentee after: BEIJING KEYI BANGEN MEDICAL DEVICES TECHNOLOGY Co.,Ltd. Address before: 100023 Beijing city Daxing District Beijing economic and Technological Development Zone Chuang six Street No. 100 Patentee before: Li Shufan |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |