CN201542734U - bioactive bone screw - Google Patents
bioactive bone screw Download PDFInfo
- Publication number
- CN201542734U CN201542734U CN2009202070821U CN200920207082U CN201542734U CN 201542734 U CN201542734 U CN 201542734U CN 2009202070821 U CN2009202070821 U CN 2009202070821U CN 200920207082 U CN200920207082 U CN 200920207082U CN 201542734 U CN201542734 U CN 201542734U
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- Prior art keywords
- screw
- bone
- setting
- thread
- tooth
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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 - Fee Related
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Abstract
The utility model discloses a bioactive bone screw, which includes a head part, a rod part, and a bone screw in the tip part which is manufactured by non-degradable bioactive material. The two sides of the head part of the screw are symmetrically provided with two cutting surfaces used for circular location; the axial end surface of the head part of the screw is provided with a groove; and the thread arranged on the rod part of the screw is a zigzag thread. The bioactive bone screw after being screwed into a human body does not need to take out through a secondary operation, which greatly lightens the pain of patients, and reduces the medical costs. When the bioactive bone screw is adopted, the screw can exist in the human body for a long period and can not cause automatic loosening due to pressure change, and the screw can not generate filament sliding during the screwing process, which can also avoid the bone screw from disintegration.
Description
Technical field
This utility model belongs to the orthopedic fixation device tool of medical domain, particularly a kind of biologic active bone-setting screw that is used for anti-skidding, the anti-back nail of fracture fixation.
Background technology
In medical field, the used bone screw of bone internal fixation is commonly metallic screw.The hemispherical of hexagonal in its screw head formation mostly is and is provided with, the screw thread on the screw rod mostly is triangle thread.Because the bone screw of internal fixation is less relatively, the thickness of screw head is thinner relatively, set interior hexagonal groove is therefore more shallow relatively less, the moment of transmitting when causing turning screw with screwdriver is less, and form skidding easily, even hexagonal groove distortion in causing, can't form moment; Triangle thread has two-way drive characteristic again simultaneously, makes screw easy generation under the long-term stress of physical activity move back the nail phenomenon automatically.Skidding causes that operating time prolongs, and increases the patient suffering; Move back the nail phenomenon and can make the fixation failure again, the patient needs operation once more, increases patient suffering and financial burden.And, bring second operation misery and financial burden to patient because metallic screw after patient's union of fracture, needs second operation to take out.The bone screw that adopts degradation material to make is also arranged, but the degradation rate and the skeletonization speed of the bone screw that degradation material is made are not complementary, often the screw mechanical strength descends too fast and loses the fracture fixation effect, there is acidic metabolite to gather in the part behind the material degradation simultaneously, forms the aseptic sinus tract in vivo.Have again, adopt metal bone screw or degradable biological material bone screw, also have because of forming the shortcoming that the nail road causes bone strength decline after screw taking-up or the degraded.
Summary of the invention
The purpose of this utility model provides a kind of biologic active bone-setting screw, and described screw adopts non-degradation bioactive material to make, and does not need second operation to take out behind the implant into body, alleviates patient's misery greatly, reduces medical treatment cost.Adopt bone screw described in the utility model, screw is long-term existence in vivo, can stress do not change to cause to move back nail automatically, and screw can not produce the stripped thread phenomenon in the process of turning, and can also avoid the head of screw disintegrate to take place.
The technical solution of the utility model is: the bone screw that comprises head, bar portion, tip, described screw is the bone screw of non-degradation bioactive material, described screw head lateral symmetry is provided with two and is used for circumferential localized facet, the screw head axial end is provided with groove, and the screw thread that is provided with in the bar portion of screw is a saw-tooth thread.
Described non-degradation bioactive material is the macromolecule polymeric material of the polynary amino acid copolymer of carbon fiber reinforced or polyether-ether-ketone or polyphenylene sulfide.
The groove of described screw head axial end setting is yi word pattern groove or cross groove.
The full section of described shank of screw portion is provided with screw thread.
Described shank of screw portion is provided with the part thread segment, and this part thread segment is located at by tip one end.
The diameter of the part thread segment of shank of screw portion of institute is greater than the diameter of bar portion light section.
Perpendicular to bar portion axis, on one side the flank of tooth is the inclined-plane to described saw-tooth thread towards the screw tip towards the screw head flank of tooth on one side, this inclined-plane and be 30～45 ° perpendicular to the angle between the flank of tooth of bar portion axis.
The diameter of described shank of screw portion is 2～7.5mm, and the length of shank of screw portion is 6～120mm.
Adopt technique scheme, with non-degradation bioactive material bone screw, make this bone screw have the good mechanical performance, do not degrade, the energy extended immobilization is in the synthetism of bone internal fixation, and because of it has excellent biological compatibility and biological activity, in the long-standing process, can grow with the osseous tissue generation bonding of human body is one in human body.Therefore, adopt non-degradation bioactive material bone screw, do not need second operation to take out behind the implant into body, alleviated patient's misery greatly, reduce medical treatment cost.
Described screw head lateral symmetry is provided with two and is used for circumferential localized facet, the screw head axial end is provided with groove, screwdriver by special use carries out fastening to bone screw, two grooves that are used for circumferential localized facet and screw head axial end of screw head are accepted moment simultaneously, can make screw in the fixed operation process of bone, can not produce skidding, and turn laborsavingly, and the time of skeletal fixation is shortened, reduce the patient suffering.Simultaneously, the screw thread that is provided with in the bar portion of screw is a saw-tooth thread, can not move back the nail phenomenon behind the screw implant into body, guarantees the success rate of skeletal fixation.
The full section of described shank of screw portion is provided with screw thread, or described shank of screw portion is provided with the part thread segment, and this part thread segment is located at by tip one end.Can be used for the fixing of cortical bone or spongy bone as required.
Because described screw adopts the bioactive materials of non-degraded to make, need not take out behind the implant into body, therefore can not cause bone strength to descend because of taking-up stays the nail road on bone; Thus, the increasing diameter of comparable metallic screw of the diameter of this screw and bioabsorbable interference screw is thick, to increase the intensity of screw.
Description of drawings
Fig. 1 is a structure diagram of the present utility model;
Fig. 2 is the structural representation of screw section;
Fig. 3 is that the A of Fig. 1 is to view;
Fig. 4 is another kind of embodiment of the present utility model.
The specific embodiment
Referring to Fig. 1-Fig. 3, a kind of embodiment of this biologic active bone-setting screw comprises the bone screw of head 3, bar portion 2, tip 4.Described screw is the bone screw of non-degradation bioactive material, and described non-degradation bioactive material is the polynary amino acid copolymer of carbon fiber reinforced (CDACP), or polyether-ether-ketone (PEEK), or the macromolecule polymeric material of polyphenylene sulfide (PBS).Described screw head lateral symmetry is provided with two and is used for circumferential localized facet 3a, and the screw head axial end is provided with groove 3b, and this groove 3b is the yi word pattern groove.The screw thread that is provided with in the bar portion 2 of screw is a saw-tooth thread 1.Perpendicular to bar portion 2 axis, on one side the flank of tooth 6 is the inclined-plane to described saw-tooth thread 1 towards the screw tip towards the screw head flank of tooth 5 on one side, this inclined-plane 6 and be 30～45 ° perpendicular to the angle between the flank of tooth 5 of bar portion axis.The diameter of described shank of screw portion 2 is 2～7.5mm, and the length of bar portion is 6～120mm; The full section of described shank of screw portion of present embodiment is provided with screw thread, is used for the fixing of cortical bone, and therefore, the diameter of shank of screw portion adopts 2～5.5mm, and the length of bar portion adopts 6～56mm.
Referring to Fig. 4, this utility model not only limits to and the foregoing description, and described shank of screw portion 2 is provided with part thread segment 2a, and this part thread segment 1 is located at by tip 4 one ends.This screw is used for the fixing of spongy bone.The diameter of this part thread segment 2a that is used for the fixed shank of screw of spongy bone portion 2 is greater than the diameter of bar portion light section, and the diameter of its bar portion 2 is 2～7.5mm, and the length of bar portion is 8～120mm.
This utility model not only is confined to the foregoing description, and the groove 3b of described its screw head 3 axial end settings also can be cross groove.
When using this utility model biologic active bone-setting screw, adopt special-purpose screwdriver, the head end of screwdriver can prop up screw from the groove of axial insertion screw head, again can be simultaneously being provided with two from the screw head lateral symmetry is used for circumferential localized facet and blocks screw, make when turning screw and skidding can not take place, avoid the groove of screw head to be damaged and cause to tighten screw.
Claims (8)
1. biologic active bone-setting screw, the bone screw that comprises head, bar portion, tip, it is characterized in that: described screw is the bone screw of non-degradation bioactive material, described screw head lateral symmetry is provided with two and is used for circumferential localized facet, the screw head axial end is provided with groove, and the screw thread that is provided with in the bar portion of screw is a saw-tooth thread.
2. biologic active bone-setting screw according to claim 1 is characterized in that: described non-degradation bioactive material is the macromolecule polymeric material of the polynary amino acid copolymer of carbon fiber reinforced or polyether-ether-ketone or polyphenylene sulfide.
3. biologic active bone-setting screw according to claim 1 is characterized in that: the groove of described screw head axial end setting is yi word pattern groove or cross groove.
4. biologic active bone-setting screw according to claim 1 is characterized in that: the full section of described shank of screw portion is provided with screw thread.
5. biologic active bone-setting screw according to claim 1 is characterized in that: described shank of screw portion is provided with the part thread segment, and this part thread segment is located at by tip one end.
6. biologic active bone-setting screw according to claim 5 is characterized in that: the diameter of the part thread segment of described shank of screw portion is greater than the diameter of bar portion light section.
7. biologic active bone-setting screw according to claim 1, it is characterized in that: described saw-tooth thread towards the screw head flank of tooth on one side perpendicular to bar portion axis, on one side the flank of tooth is the inclined-plane towards the screw tip, this inclined-plane and be 30～45 ° perpendicular to the angle between the flank of tooth of bar portion axis.
8. biologic active bone-setting screw according to claim 1 is characterized in that: the diameter of described shank of screw portion is 2～7.5mm, and the length of shank of screw portion is 6～120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202070821U CN201542734U (en) | 2009-11-10 | 2009-11-10 | bioactive bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202070821U CN201542734U (en) | 2009-11-10 | 2009-11-10 | bioactive bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201542734U true CN201542734U (en) | 2010-08-11 |
Family
ID=42597892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202070821U Expired - Fee Related CN201542734U (en) | 2009-11-10 | 2009-11-10 | bioactive bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201542734U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921800A (en) * | 2015-04-07 | 2015-09-23 | 重庆医科大学 | Non-degradable biological screw |
| CN107280756A (en) * | 2017-07-21 | 2017-10-24 | 西安康拓医疗技术有限公司 | A kind of medical cranial Bone nail structure |
| CN110916737A (en) * | 2019-11-26 | 2020-03-27 | 杭州电子科技大学 | Degradable screw and manufacturing method thereof |
| CN111050691A (en) * | 2017-07-12 | 2020-04-21 | 雷康特公司 | Bone anchors, kits and methods of use |
-
2009
- 2009-11-10 CN CN2009202070821U patent/CN201542734U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921800A (en) * | 2015-04-07 | 2015-09-23 | 重庆医科大学 | Non-degradable biological screw |
| CN104921800B (en) * | 2015-04-07 | 2018-03-30 | 重庆医科大学 | A kind of non-degradable type biology screw |
| CN111050691A (en) * | 2017-07-12 | 2020-04-21 | 雷康特公司 | Bone anchors, kits and methods of use |
| CN107280756A (en) * | 2017-07-21 | 2017-10-24 | 西安康拓医疗技术有限公司 | A kind of medical cranial Bone nail structure |
| CN110916737A (en) * | 2019-11-26 | 2020-03-27 | 杭州电子科技大学 | Degradable screw and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20131110 |