CN2458994Y - Nickel-titanium shape memory alloy bone screw - Google Patents
Nickel-titanium shape memory alloy bone screw Download PDFInfo
- Publication number
- CN2458994Y CN2458994Y CN 00267537 CN00267537U CN2458994Y CN 2458994 Y CN2458994 Y CN 2458994Y CN 00267537 CN00267537 CN 00267537 CN 00267537 U CN00267537 U CN 00267537U CN 2458994 Y CN2458994 Y CN 2458994Y
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- Prior art keywords
- skull
- utility
- model
- armed lever
- arm rod
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Abstract
The utility model relates to an improved nickel-titanium shape memory alloy bone screw used for the fixation of a skull, which comprises a cylindrical arm rod in a wave shape and two cylindrical feet respectively connected with the two ends of the arm rod. The included angles of the two feet and the arm rod are from 65 to 75 DEG. The utility model is characterized in that the surface of the arm rod contacted with the skull and the other surface corresponding to the surface are both planes. After clinical tests, the utility model has light reaction, no complication and no tilted, collapsed and loosing bone flap after an operation. The utility model is particularly suitable for the fixation of the skull damage of a face part with a good shaping effect.
Description
This utility model relates to a kind of ni-ti form memory-alloy cramp, is used for skull and fixes.
Defect of skull is the neurosurgery commonly encountered diseases.Particularly the defect of skull due to the craniocerebral injury is work.The development that is used for skull repairing and immobilization material is the unfailing research topic of neurosurgery.Wherein patching material from by use the patient from the body skull, to five, the lucite skull in the sixties, the titanium plate skull to the seventies develops into the eighties, and uses silica gel sheet material so far; And the immobilization material ni-ti form memory-alloy cramp also has been used for fixing behind the skull repairing.
Because excellent shape memory effect that ni-ti form memory-alloy cramp had, i.e. variations in temperature, the curium nail can restore to the original state immediately and produce restoring force.Clinical utilize this restoring force silica gel sheet and skull firmly curium lump together.
According to clinical needs, often run into face, as the repairing after little position, the small size head injuries such as left and right temporo, top, volume, to this, people such as Wang Zhaoming once designed a kind of ni-ti form memory-alloy cramp in 1989, and as shown in Figure 1, this curium nail is double-foot nail, its structure by corrugated garden cylindricality armed lever, respectively be connected in the armed lever two ends garden cylindricality bipod formed, the angle between bipod and the armed lever be 70 ± 5 the degree.
But in use, the diameter of garden cylindricality armed lever is 1.5mm, and the surface is curved surface, and therefore after the operation, scalp is jack-up upwards easily, will mend screw top easily with cramps and go out, and shaping effect is not good.
The purpose of this utility model is to provide a kind of improved ni-ti form memory-alloy cramp, makes after-operation response light, and the perk of no bone lobe is subsided, and loosening, and shaping effect is good.
This utility model relates to a kind of fixed ni-ti form memory-alloy cramp of skull that is used for, comprise that the garden cylindricality armed lever of undulate, the garden cylindricality bipod that is connected in the armed lever two ends respectively form, angle between described bipod and the armed lever is 70 ± 5 degree, it is characterized in that the pairing another side in the contacted surface of described armed lever and skull and this surface is the plane.
Effect of the present utility model: the upper and lower surface that changes garden cylindricality armed lever is the plane, reduces the thickness of armed lever, and is loosening after the curium nail is fixing, is particularly useful for the repairing of defect of skull of facial area and fixing, and shaping effect is good.
The former curium pin structure of Fig. 1 sketch map.
Fig. 2 structural representation of the present utility model.
Description of drawings: 1 armed lever, 2 feet, 3 upper surfaces, 4 lower surfaces.
Now in conjunction with the accompanying drawings the structure of this utility model is explained: improved curium nail outward appearance is flat waveform, the upper and lower surface of armed lever is the plane, make former 1.5mm diameter be decreased to not enough 1.0mm, by thick attenuation, thereby make the unlikely jack-up of scalp, shaping effect is good, the upper and lower plane of armed lever is through current flow heats, flattened by mould, material does not lose, and intensity does not reduce.
Through clinical trial: after-operation response is light, no complication, and cosmetic outcome is good, and the perk of no bone lobe is subsided, and loosening the generation.
Claims (1)
1 one kinds are used for the fixed ni-ti form memory-alloy cramp of skull, comprise the garden cylindricality armed lever of undulate, respectively be connected in the armed lever two ends garden cylindricality bipod form, angle between described bipod and the armed lever is 70 ± 5 degree, it is characterized in that the pairing another side in the contacted surface of described armed lever and skull and this surface is the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267537 CN2458994Y (en) | 2000-12-25 | 2000-12-25 | Nickel-titanium shape memory alloy bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267537 CN2458994Y (en) | 2000-12-25 | 2000-12-25 | Nickel-titanium shape memory alloy bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2458994Y true CN2458994Y (en) | 2001-11-14 |
Family
ID=33621324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00267537 Expired - Fee Related CN2458994Y (en) | 2000-12-25 | 2000-12-25 | Nickel-titanium shape memory alloy bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2458994Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427158C (en) * | 2002-09-29 | 2008-10-22 | 胡敏 | Titanium-nickel memory alloy pull-stretch device and the producing method thereof |
| CN106491197A (en) * | 2016-12-12 | 2017-03-15 | 胡晓予 | A kind of Cranial-bone-flap resets the device and preparation method thereof that is connected |
-
2000
- 2000-12-25 CN CN 00267537 patent/CN2458994Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427158C (en) * | 2002-09-29 | 2008-10-22 | 胡敏 | Titanium-nickel memory alloy pull-stretch device and the producing method thereof |
| CN106491197A (en) * | 2016-12-12 | 2017-03-15 | 胡晓予 | A kind of Cranial-bone-flap resets the device and preparation method thereof that is connected |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |