CN202397584U - Degradable magnesium alloy orthopedic internal fixation interface screw - Google Patents
Degradable magnesium alloy orthopedic internal fixation interface screw Download PDFInfo
- Publication number
- CN202397584U CN202397584U CN2011205603524U CN201120560352U CN202397584U CN 202397584 U CN202397584 U CN 202397584U CN 2011205603524 U CN2011205603524 U CN 2011205603524U CN 201120560352 U CN201120560352 U CN 201120560352U CN 202397584 U CN202397584 U CN 202397584U
- Authority
- CN
- China
- Prior art keywords
- screw
- magnesium alloy
- screw head
- shank
- internal fixation
- 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.)
- Expired - Fee Related
Links
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 28
- 230000000399 orthopedic effect Effects 0.000 title claims abstract description 24
- 229910001051 Magnalium Inorganic materials 0.000 claims description 12
- 241001132374 Asta Species 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 4
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 4
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 abstract 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000011164 ossification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses an orthopedic medical applicable appliance in the field of medical instruments, in particular a degradable magnesium alloy orthopedic internal fixation interface screw, which comprises a screw head and a screw rod, wherein the screw head is provided with a groove; the top surface of the screw head is provided with an extension part which faces outwards in the axial direction of the screw. According to the degradable magnesium alloy orthopedic internal fixation interface screw, the contact area with a screw driver is increased without affecting the mechanical property of the original screw; the degradable magnesium alloy orthopedic internal fixation interface screw has an effect of inducing formation of a new bone of a body; the screw is prevented from falling from the screwdriver and skidding mutually and the like; and the treatment of a patient is facilitated.
Description
Technical field
The orthopaedic medical treatment that this utility model relates in a kind of medical instruments field is suitable for utensil, specifically, is the orthopedic internal fixation of a kind of degradable magnesium alloy interface nail.
Background technology
At present, move at orthopaedics and to connect, in rectification or the ligament reconstruction operations, often to need to use interference screw to fix; But in interference screw, can use the absorption interface screw usually, this screw fixation has higher initial fixation intensity; But the depth of groove on the interference screw head of screw on the market is more shallow, screw may take place when mounted drop from screwdriver, perhaps when needs take out screw; Because it is many that screw has been degraded, the broadening that shoaled of the groove of head of screw, screwdriver skids when causing getting nail, the nail difficult problem is got in idle running etc.; Prolonged the misery of getting the nail time and having increased the patient, unfavorable to patient's treatment, but and the maximum absorption interface screw of existing use be the titanium alloy interference screw; Compare with the screw that magnesium alloy is made; The titanium alloy interference screw is difficult for being made organ heal slowly fully by solution degradation in the body, also can produces certain mental pressure to the patient.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency to prior art, and the orthopedic internal fixation of a kind of degradable magnesium alloy interface nail is provided, and itself and screwdriver contact area are big, do not influence the mechanical property of original screw again, and have the new osteogenesis effect of the body of inducing.
For achieving the above object, realize through following technical scheme:
The orthopedic internal fixation of a kind of degradable magnesium alloy interface nail comprises screw head, shank of screw, establishes groove on the said screw head, and the end face of screw head is provided with along screw axial extension outwardly, has increased the contact area with screwdriver.
The profile of said extension is cylindrical, and its cross section radius is less than screw head end face radius.
Groove on the said screw head is interior hexagonal groove.
The axial cross section profile of said screw head is tapered, and the little nose circle of screw head and shank of screw smooth connection are in one.
The tail end of said shank of screw finishes up with circle, makes that the body pressurized is even, reduces the patient suffering.
Said shank of screw is a cylindrical straight-bar, comprises polished rod part and threaded portion, and said polished rod part is between screw head and threaded portion, and polished rod is easy to dismounting, and screw thread is used to be fastenedly connected.
The screw thread of said threaded portion is a female thread.
Said female thread is saw-tooth thread and dextrorotation.
Screw head is the screw head that degradable absorbs; Shank of screw is the shank of screw that degradable absorbs, and is easy to degraded.
The screw head that said degradable absorbs is medical magnesium alloy screw head, magnalium screw head, hydroxyapatite coating layer magnalium screw head or Afluon (Asta) coating magnalium screw head; The shank of screw that said degradable absorbs is medical magnesium alloy shank of screw, magnalium shank of screw, hydroxyapatite coating layer magnalium shank of screw or Afluon (Asta) coating magnalium shank of screw.
Compared with prior art, the orthopedic internal fixation of a kind of degradable magnesium alloy of this utility model interface nail has the following advantages:
1. on the basis that does not change former screw mechanical property, increased the contact area with screwdriver, be easier to the installation and removal screw.
2. the polished rod part on the shank of screw makes dismantlement work convenient smoothly.
3. the tail end of shank of screw adopts circular ending, has reduced impulsive force and the destructive power of foreign body to biological tissue, makes that the body pressurized is even, has avoided the disorganize structure, reduces the patient suffering.
4. head of screw and shank of screw are degradable head of screw and degradable shank of screw, are easy to degraded, have accelerated the healing of wound, make the union of fracture rate increase, and complication reduces.
Description of drawings
Fig. 1 is the orthopedic internal fixation of an a kind of degradable magnesium alloy interface nail front view
Fig. 2 is the orthopedic internal fixation of an a kind of degradable magnesium alloy interface nail vertical view
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is further described.
Structure as shown in the figure is one of embodiment of the orthopedic internal fixation of a kind of degradable magnesium alloy of this utility model interface nail; Comprise screw head 1, shank of screw 2; Said screw head is provided with interior hexagonal groove; The end face of screw head 1 is provided with along screw axial extension 3 outwardly, has increased the contact area with screwdriver; The profile of said extension 3 is cylindrical, and its cross section radius is less than screw head 1 end face radius; The axial cross section profile of said screw head 1 is tapered, the little nose circle of screw head 1 in shank of screw 2 smooth connections in one; The tail end of said shank of screw 2 finishes up with circle, makes that the body pressurized is even, reaches the misery that reduces the patient; Said shank of screw 2 is a cylindrical straight-bar, comprises polished rod part 4 and threaded portion 5, and said polished rod part 4 is between screw head 1 and threaded portion 5, and polished rod is easy to dismounting, and screw thread then is used to be fastenedly connected; Said threaded portion 5 is a female thread; Said female thread is saw-tooth thread and dextrorotation; The screw head that screw head 1 absorbs for degradable; Shank of screw 2 is the shank of screw that degradable absorbs, and is easy to degraded.
The orthopedic internal fixation of a kind of degradable magnesium alloy of this utility model interface nail is not limited to above embodiment, so long as the scheme of mentioning in this description and claims all can be implemented.
Claims (10)
1. the orthopedic internal fixation of a degradable magnesium alloy interface nail comprises screw head (1), shank of screw (2), and said screw head (1) is provided with groove, it is characterized in that the end face of said screw head (1) is provided with along screw axial extension (3) outwardly.
2. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 1 interface nail, the profile that it is characterized in that said extension (3) is cylindrical, its cross section radius is less than screw head (1) end face radius.
3. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 2 interface nail is characterized in that the groove on the said screw head (1) is interior hexagonal groove.
4. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 3 interface nail is characterized in that the axial cross section profile of said screw head (1) is tapered, and the little nose circle of screw head (1) and shank of screw (2) smooth connection are in one.
5. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 4 interface nail is characterized in that the tail end of said shank of screw (2) finishes up with circle.
6. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 5 interface nail; It is characterized in that said shank of screw (2) is a cylindrical straight-bar; Comprise polished rod part (4) and threaded portion (5), said polished rod part (4) is positioned between screw head (1) and the threaded portion (5).
7. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 6 interface nail, the screw thread that it is characterized in that said threaded portion (5) is a female thread.
8. the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 7 interface nail is characterized in that said female thread is saw-tooth thread and dextrorotation.
9. according to the orthopedic internal fixation of the described a kind of degradable magnesium alloy of arbitrary claim in the claim 1 to 8 interface nail, it is characterized in that the screw head that screw head (1) absorbs for degradable; The shank of screw that shank of screw (2) absorbs for degradable.
10. according to the orthopedic internal fixation of a kind of degradable magnesium alloy according to claim 9 interface nail, it is characterized in that the screw head that said degradable absorbs is medical magnesium alloy screw head, magnalium screw head, hydroxyapatite coating layer magnalium screw head or Afluon (Asta) coating magnalium screw head; The shank of screw that said degradable absorbs is medical magnesium alloy shank of screw, magnalium shank of screw, hydroxyapatite coating layer magnalium shank of screw or Afluon (Asta) coating magnalium shank of screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205603524U CN202397584U (en) | 2011-12-28 | 2011-12-28 | Degradable magnesium alloy orthopedic internal fixation interface screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205603524U CN202397584U (en) | 2011-12-28 | 2011-12-28 | Degradable magnesium alloy orthopedic internal fixation interface screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202397584U true CN202397584U (en) | 2012-08-29 |
Family
ID=46695267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205603524U Expired - Fee Related CN202397584U (en) | 2011-12-28 | 2011-12-28 | Degradable magnesium alloy orthopedic internal fixation interface screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202397584U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104257423A (en) * | 2014-08-21 | 2015-01-07 | 赵德伟 | Pure magnesium bolt with degradable front-arranged threads |
| CN106880396A (en) * | 2015-12-15 | 2017-06-23 | 上海交通大学 | A kind of Fracture internal fixaiion screw of degradable absorption |
| CN110917407A (en) * | 2019-11-26 | 2020-03-27 | 杭州电子科技大学 | High-strength degradable bioactive screw and manufacturing method thereof |
| CN113440193A (en) * | 2021-05-13 | 2021-09-28 | 花沐医疗科技(上海)有限公司 | Composite absorbable interface screw and preparation method thereof |
-
2011
- 2011-12-28 CN CN2011205603524U patent/CN202397584U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104257423A (en) * | 2014-08-21 | 2015-01-07 | 赵德伟 | Pure magnesium bolt with degradable front-arranged threads |
| CN106880396A (en) * | 2015-12-15 | 2017-06-23 | 上海交通大学 | A kind of Fracture internal fixaiion screw of degradable absorption |
| CN110917407A (en) * | 2019-11-26 | 2020-03-27 | 杭州电子科技大学 | High-strength degradable bioactive screw and manufacturing method thereof |
| CN113440193A (en) * | 2021-05-13 | 2021-09-28 | 花沐医疗科技(上海)有限公司 | Composite absorbable interface screw and preparation 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: 20120829 Termination date: 20121228 |