CN103815959A - Bone screw - Google Patents
Bone screw Download PDFInfo
- Publication number
- CN103815959A CN103815959A CN201210464166.XA CN201210464166A CN103815959A CN 103815959 A CN103815959 A CN 103815959A CN 201210464166 A CN201210464166 A CN 201210464166A CN 103815959 A CN103815959 A CN 103815959A
- Authority
- CN
- China
- Prior art keywords
- bone screw
- bar portion
- angle
- screw
- bone
- Prior art date
- 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.)
- Pending
Links
Images
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
Abstract
The invention discloses a bone screw which comprises a head, a rod, a rod tail end and a cutting portion. The rod is provided with a threaded outer peripheral surface and comprises a calibration portion, and the cutting portion is provided with a front angle and a rear angle. The rod tail end mainly comprises a saw end and a flat end, but grooves, slots, notches or similarly drill-bit-shaped portions or the like with cutting functions can be machined at the rod tail end according to service functions. The bone screw has the advantages that working hours can be reduced, the operation efficiency can be improved, accordingly, suffering of patients can be relieved, and open surgical infection risks of patients can be reduced; squeezing load on threads at the rear of the bone screw can be reduced, the threads tapped by the self-tapping bone screw are high in quality, and the external threads and the internal threads of the bone screw can be reliably connected with one another.
Description
Technical field
The present invention relates to technical field of medical instruments, relate in particular to a kind of medical bone screw.
Background technology
Bone screw is a kind of internal fixation device for the treatment of fracture, and nail is made up of metal material, is mainly pure titanium, titanium alloy, cobalt-base alloys and rustless steel etc.Metal and Alloy material, has enough large intensity and toughness, and counter-bending and anti-torsion ability is strong, belongs to bio-inert material, with the combination of bone be the sealed of a kind of machinery.
For reducing operating time, reduce the use of apparatus in operation, a kind of self-drilling self-tapping nail is also applied clinically, as United States Patent (USP), the patent No.: 5797014.This self drilling tapping screw and common tapping screw difference be common tapping screw in the time being connected, must be through boring (brill thread Pilot hole) and tapping (comprise and being fastenedly connected) two procedures; And self drilling tapping screw is in the time connecting, just boring and the merging of tapping two procedures are once completed.It is first holed with the drill bit before screw, carries out tapping (comprise and being fastenedly connected) with that with screw, saves the engineering time, improves efficiency of construction.
Common self drilling tapping screw requires thread surface hardness higher, and the nip load of screw thread is larger, is screwed into moment high, and the screw of tapping is of low quality.In order to address the above problem, those skilled in the art is devoted to develop one and has low moment and the high locking property of being screwed into, and has the bone screw of better service behaviour than common tapping screw.
Applicant is engaged in research and development and the manufacture of screw thread and cutter measurer thereof for a long time, also start to set foot in recent years the development of medical apparatus and instruments and apparatus, for the problem of common bone screw and the existence of existing self drilling tapping screw, applicant is from different angle thinkings, screw tool is combined with nail operation principle, and open up thinking and be bold in innovation, obtain a kind of brand-new tapping screw structure.This is to only have the technical staff of medical background to be difficult to expect.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide one and has low moment and the high locking property of being screwed into, and has the bone screw of better service behaviour than common tapping screw.
For achieving the above object, the invention provides a kind of bone screw.
Bone screw of the present invention, is made up of head, bar portion and end three parts.End mainly contains tip, flush end.But according to using function can process part of ditch, groove, otch or the similar drill-shape with cutting function etc.
Preferably, in the first preferred embodiments of the present invention, nail end thread is with cutting cone, each parameter (the flute profile of cutting cone, anterior angle, relief angle) can be with reference to screw tap, be equivalent to first tap out in endoporus of the former teeth of nail, the nip load that has reduced screw thread after nail, it is less that nail is screwed into moment.Before nail is screwed into, nail end fraction has entered endoporus, plays positioning action.Cutting cone is screwed in process and plays certain guide effect at nail, so little with the self tapping nail moment of cutting cone, the thread quality of tapping is higher, connects more reliable.
Preferably, in the second preferred embodiments of the present invention, the structure of the one section of similar drill bit in end, the cutting cone of the similar screw tap of the initial several teeth of threaded portion, has anterior angle and back-off, and identical with section shape figure in Fig. 6, flute profile is helicla flute.
The object of nail fluting is to form cutting edge (having positive anterior angle), has cutting function, separately has the bits of appearance function.The shape of groove is different.
Bone screw of the present invention, is made up of head, bar portion and end three parts, the threaded outer peripheral face of described bar portion's tool, and described bar portion comprises calibrated section, wherein also comprises cutting tip, described cutting tip is with anterior angle and relief angle.
Further, described bar portion terminal part is flush end.
Described anterior angle is 0~20 °, and described relief angle is 0~20 °.
Preferably, described anterior angle is 8~10 °, and described back-off is 6~8 °.
Axis direction in described bar portion has at least 1 chip pocket, to form cutting edge.
The end of described cutting edge is with taper lead angle.
Described taper lead angle is 0~25 °.
Described chip pocket is straight trough, spiral shell point type groove or helicla flute, and wherein said spiral shell point type has lower chip area at described terminal part.
Further, described nail end is most advanced and sophisticated and concentric with screw longitudinal axis, and the initial several teeth of threaded portion of described bar portion are with taper lead angle.
Described bar portion also comprises bit part, and described targeting part is made up of two symmetrical helicla flutes and land.
Described targeting part is made with back taper, to reduce and the friction of hole wall.
Described cutting tip comprises rake face, rear knife face and cutting edge.
Technique effect: bone screw of the present invention has reduced screw-in moment of torsion on the one hand, has reduced operator's working strength, has shortened the operating time; Second aspect cutting cone plays location and guide effect, has reduced operation easier, has shortened the operating time simultaneously; Above-mentioned advantage has alleviated patient's misery, has reduced the risk that patient's open surgery infects; The third aspect, cutting cone has tapping effect, has reduced the nip load of screw thread after nail, makes the thread quality of self tapping nail tapping higher, and nail external screw thread is more reliable with being connected of female thread.
Accompanying drawing explanation
Fig. 1 is the perspective view of the bone screw straight trough of a preferred embodiment of the present invention;
Fig. 2 is the front view of the bone screw of a preferred embodiment of the present invention;
Fig. 3 is the cutaway view of the A-A direction of the bone screw of a preferred embodiment of the present invention;
Fig. 4 is the fragmentary, perspective view of the bone screw spiral shell point type groove of a preferred embodiment of the present invention;
Fig. 5 is the bone screw spiral fluted fragmentary, perspective view of a preferred embodiment of the present invention;
The fragmentary, perspective view of the bone screw of Fig. 6 second preferred embodiment of the present invention.
The specific embodiment
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
As shown in Figure 1, bone screw of the present invention, is made up of head 1, bar portion 2 and end 3 three parts.End mainly contains tip, flush end.But according to using function can process part of ditch, groove, otch or the similar drill-shape with cutting function etc.
In the first preferred embodiments of the present invention, as shown in Figure 2, bar portion terminal part is flush end, and nail end thread is with cutting cone, the each parameter (flute profile of cutting cone, anterior angle, relief angle) can be with reference to screw tap, be equivalent to first tap out in endoporus of the former teeth of nail, reduce the nip load of screw thread after nail, make the thread quality of self tapping nail tapping higher, nail external screw thread is more reliable with being connected of female thread.The threaded outer peripheral face of bar portion tool, comprises calibrated section, wherein, also comprises cutting tip, and as shown in Figure 3, cutting tip is with anterior angle α and relief angle β.Anterior angle α is 0~20 °, and above-mentioned relief angle β is 0~20 °.
Preferably, anterior angle is 8~10 °, and relief angle is 6~8 °.
As shown in Figure 2, have at least 1 chip pocket 4 at the axis direction of bar portion, to form cutting edge.
The end of cutting edge, with taper lead angle Kr=0~25 °, is preferably 10 °.
The object of nail fluting is to form cutting edge (having positive anterior angle), has cutting function, separately has the bits of appearance function.The shape of groove is different.Chip pocket is straight trough, spiral shell point type groove or helicla flute, respectively as shown in Figure 1, Figure 4, Figure 5, wherein spiral shell point type endways portion have lower chip area 5.
Preferably, in the second preferred embodiments of the present invention, as shown in Figure 6, and the structure of the one section of similar drill bit in end, the cutting cone of the similar screw tap of the initial several teeth of threaded portion, has anterior angle and back-off, and identical with section shape figure in Fig. 3, flute profile is helicla flute.
End is most advanced and sophisticated and concentric with screw longitudinal axis.
End also comprises targeting part, and described targeting part is made up of two symmetrical helicla flutes and land.
Targeting part is made with back taper, to reduce and the friction of hole wall.Cutting tip comprises rake face, rear knife face and cutting edge.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area just can design according to the present invention be made many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (12)
1. a bone screw, is made up of head, bar portion and end three parts, the threaded outer peripheral face of described bar portion's tool, and described bar portion comprises calibrated section, it is characterized in that, also comprise cutting tip, described cutting tip is with anterior angle and relief angle.
2. bone screw as claimed in claim 1, is characterized in that, described bar portion terminal part is flush end.
3. bone screw as claimed in claim 1, is characterized in that, described anterior angle is 0~20 °, and described relief angle is 0~20 °.
4. bone screw as claimed in claim 3, is characterized in that, described anterior angle is 8~10 °, and described relief angle is 6~8 °.
5. bone screw as claimed in claim 1, is characterized in that, has at least 1 chip pocket, to form cutting edge at the axis direction of described bar portion.
6. bone screw as claimed in claim 5, is characterized in that, the end of described cutting edge is with taper lead angle.
7. bone screw as claimed in claim 6, is characterized in that, described taper lead angle is 0~25 °.
8. bone screw as claimed in claim 5, is characterized in that, described chip pocket is straight trough, spiral shell point type groove or helicla flute, and wherein said spiral shell point type has lower chip area in described end.
9. bone screw as claimed in claim 1, is characterized in that, described end is most advanced and sophisticated and concentric with screw axis, and the initial several teeth of threaded portion of described bar portion are with taper lead angle.
10. bone screw as claimed in claim 1, is characterized in that, described bar portion also comprises targeting part, and described targeting part is made up of two symmetrical helicla flutes and land.
11. bone screws as claimed in claim 10, is characterized in that, described targeting part is made with back taper, to reduce and the friction of hole wall.
12. bone screws as claimed in claim 1, is characterized in that, described cutting tip comprises rake face, rear knife face and cutting edge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210464166.XA CN103815959A (en) | 2012-11-16 | 2012-11-16 | Bone screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210464166.XA CN103815959A (en) | 2012-11-16 | 2012-11-16 | Bone screw |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103815959A true CN103815959A (en) | 2014-05-28 |
Family
ID=50751457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210464166.XA Pending CN103815959A (en) | 2012-11-16 | 2012-11-16 | Bone screw |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103815959A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105326558A (en) * | 2014-08-11 | 2016-02-17 | 天津市康尔医疗器械有限公司 | Bone joining plate locking screw |
WO2018214937A1 (en) * | 2017-05-24 | 2018-11-29 | 常州益锐医疗器材有限公司 | Root canal file with non-continuous spiral cutting edge |
CN114376699A (en) * | 2020-10-05 | 2022-04-22 | 铂泰生医股份有限公司 | Bone screw |
WO2023235783A1 (en) * | 2022-06-03 | 2023-12-07 | Seaspine Orthopedics Corporation | Bone screw apparatus |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86108709A (en) * | 1985-11-28 | 1987-06-17 | 雅克矫形外科公司 | The transcutaneous pin of fixing bone or broken bone |
US5573537A (en) * | 1995-02-10 | 1996-11-12 | Rogozinski; Chaim | Instrument for probing and reaming a pedicle |
US6254604B1 (en) * | 1990-07-16 | 2001-07-03 | Arthrotek, Inc. | Tibial guide |
CN1446518A (en) * | 2003-04-22 | 2003-10-08 | 丁大法 | Compression fastener in narrow of thighbone |
CN2598693Y (en) * | 2002-08-06 | 2004-01-14 | 苏继承 | Bone fracture fixing threading drill and its matched threading nail |
US20060190001A1 (en) * | 2004-05-19 | 2006-08-24 | Sean Powell | Snap-lock for drill sleeve |
US7175626B2 (en) * | 2004-06-15 | 2007-02-13 | Board Of Regents Of The University Of Nebraska | Dynamic compression device and driving tool |
CN201879811U (en) * | 2010-12-05 | 2011-06-29 | 明立德 | Elastic micro-motion slidable pressurized unboarded interlocking intramedullary nail for thigh |
CN102188282A (en) * | 2010-03-08 | 2011-09-21 | 史赛克创伤公司 | Bone fixation system with curved profile threads |
CN202458648U (en) * | 2012-02-21 | 2012-10-03 | 季文婷 | Spiral blade type inner bone marrow locking nail |
CN203001099U (en) * | 2012-11-16 | 2013-06-19 | 上海底特精密紧固件有限公司 | Bone screw |
-
2012
- 2012-11-16 CN CN201210464166.XA patent/CN103815959A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86108709A (en) * | 1985-11-28 | 1987-06-17 | 雅克矫形外科公司 | The transcutaneous pin of fixing bone or broken bone |
US6254604B1 (en) * | 1990-07-16 | 2001-07-03 | Arthrotek, Inc. | Tibial guide |
US5573537A (en) * | 1995-02-10 | 1996-11-12 | Rogozinski; Chaim | Instrument for probing and reaming a pedicle |
CN2598693Y (en) * | 2002-08-06 | 2004-01-14 | 苏继承 | Bone fracture fixing threading drill and its matched threading nail |
CN1446518A (en) * | 2003-04-22 | 2003-10-08 | 丁大法 | Compression fastener in narrow of thighbone |
US20060190001A1 (en) * | 2004-05-19 | 2006-08-24 | Sean Powell | Snap-lock for drill sleeve |
US7175626B2 (en) * | 2004-06-15 | 2007-02-13 | Board Of Regents Of The University Of Nebraska | Dynamic compression device and driving tool |
CN102188282A (en) * | 2010-03-08 | 2011-09-21 | 史赛克创伤公司 | Bone fixation system with curved profile threads |
CN201879811U (en) * | 2010-12-05 | 2011-06-29 | 明立德 | Elastic micro-motion slidable pressurized unboarded interlocking intramedullary nail for thigh |
CN202458648U (en) * | 2012-02-21 | 2012-10-03 | 季文婷 | Spiral blade type inner bone marrow locking nail |
CN203001099U (en) * | 2012-11-16 | 2013-06-19 | 上海底特精密紧固件有限公司 | Bone screw |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105326558A (en) * | 2014-08-11 | 2016-02-17 | 天津市康尔医疗器械有限公司 | Bone joining plate locking screw |
WO2018214937A1 (en) * | 2017-05-24 | 2018-11-29 | 常州益锐医疗器材有限公司 | Root canal file with non-continuous spiral cutting edge |
CN114376699A (en) * | 2020-10-05 | 2022-04-22 | 铂泰生医股份有限公司 | Bone screw |
WO2023235783A1 (en) * | 2022-06-03 | 2023-12-07 | Seaspine Orthopedics Corporation | Bone screw apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6068632A (en) | Bone tap apparatus | |
AU2011334547B2 (en) | Drill bit | |
EP1273273B1 (en) | Self-tapping screw for small-bone surgery | |
US5575650A (en) | Cutting drill for endosseous implants | |
US9980759B2 (en) | Intramedullary nail and nail combinations | |
ATE529066T1 (en) | SELF-DRILLING IMPLANT | |
US10456144B2 (en) | Bur for dental implantology | |
CN103550004B (en) | Implanting body of artificial tooth and implanting body of artificial tooth system | |
CN103815959A (en) | Bone screw | |
EP2836134B1 (en) | Surgical drill bits | |
CN203458441U (en) | Piezosurgery head | |
CN203001099U (en) | Bone screw | |
CN111493992A (en) | Self-tapping spicule | |
CN204468249U (en) | Without a headly strut hollow screw group | |
CN215384384U (en) | Bone drill bit | |
CN203029363U (en) | Threaded spicule | |
CN112156357B (en) | Self-tapping and self-drilling skull screw | |
CN203598035U (en) | Dynamic hip screw with movable sleeve | |
CN202537584U (en) | Thighbone marrow drill | |
CN208741061U (en) | General medical bone drill | |
CN209770557U (en) | Two segmentation tooth planting devices with from cutting function | |
CN206526094U (en) | A kind of special nail of orthopaedics | |
CN108703796A (en) | Explosion-proof compressive hollow screw without a head | |
CN205672093U (en) | The squeezed device of pin hole bone | |
CN101856259A (en) | Bone pressure-reducing needle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140528 |