CN2889193Y - Niche type interference bolt - Google Patents
Niche type interference bolt Download PDFInfo
- Publication number
- CN2889193Y CN2889193Y CN 200620080280 CN200620080280U CN2889193Y CN 2889193 Y CN2889193 Y CN 2889193Y CN 200620080280 CN200620080280 CN 200620080280 CN 200620080280 U CN200620080280 U CN 200620080280U CN 2889193 Y CN2889193 Y CN 2889193Y
- Authority
- CN
- China
- Prior art keywords
- screw
- bone
- type interference
- tendon
- niche type
- 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
Abstract
A cage-shaped interference screw belongs to the technical field of orthopaedics. The utility model comprises screw body (4) and screw tail. The screw body (4) is provided with a guide hole (8) in its center and a transversal groove (7) disposed in the middle of the guide hole. The transversal groove (7) is inserted into the cancellous bone of a patient, so as to increase the area of contact between tendon and bone tunnel. Therefore, the utility model can shorten the time of tendon-bone healing, increase the strength of healed bone, and reduce the adverse effect of incision, and helps to enhance the therapeutic effect of ligament reconstruction.
Description
Technical field
The niche type interference screw belongs to medical science orthopaedics field.
Technical background
Ligamentous injury of knee joint is much seen in daily life.If can not get correct treatment, will cause knee instability, secondary traumatic bone arthritis is brought certain invalidity.Along with the development of arthroscopic techniques, rebuild ligamentaum cruciatum by Minimally Invasive Surgery, accepted by numerous doctors and patient.The fixing means of rebuilding ligament mainly contains two kinds of suspention class and embedding/extrusion type.Interference screw belongs to embedding/extrusion type to be fixed, and it has eliminated rain brush or pendulum effect and the rubber band effect of ligament after fixing, reduces the tunnel face and enlarges with ligament and relax, operation technique is simple relatively, instant robustness is good, but the postoperative early functional exercise has obvious superiority.But exist subject matter to be, existing interference screw occupies the contact surface of part tendon and osseous tunnel, and tendon-bone healing time is longer, and the all-metal screw has stronger dissection to tendon, influences its robustness.And bioabsorbable interference screw leaves cavity after the absorption, and the possibility that makes ligament lax is again arranged.
The utility model content
The technical problems to be solved in the utility model is: overcome the problem that prior art exists, provide a kind of tendon-bone healing time short, the back robustness increase of healing, to rebuilding the little niche type interference screw of cutting side effect of ligament.
The technical scheme that its technical problem that solves this utility model adopts is: this niche type interference screw, comprise screw, nail tail, and it is characterized in that: there is pilot hole at the screw center, and the middle part has horizontal groove.
Be provided with the hexagonal screw in the nail tail.The nail tail is provided with telltale mark.
Laterally the groove two ends are the plane.Laterally in the groove people's bone is installed.
Compared with prior art, the beneficial effect that this utility model had is: the niche type interference screw, be to have horizontal groove at the screw middle part, because the screw middle part has horizontal groove, in the operation patient is embedded in the horizontal groove from the body spongy bone, the contact surface of tendon and osseous tunnel is increased, tendon-bone healing time shortens, healing back robustness increases, owing to reduce and the passivation screw thread, little to the cutting side effect of rebuilding ligament, reduced the loosening again rate of ligament, improved the therapeutic effect after ligament is rebuild.
Description of drawings
Fig. 1 is that this utility model niche type interference screw A-A cuts open and shows structural representation;
Fig. 2 is the plan structure sketch map of Fig. 1.
Fig. 1-2 is a most preferred embodiment of the present utility model, wherein: hexagonal screw 4 screws 5 passivation screw threads 6 screw cutting planes 7 horizontal grooves 8 screw centre pilot holes 9 ailheads in 1 nail tail, 2 telltale marks 3.
The specific embodiment
Below in conjunction with accompanying drawing this novel practical niche type interference screw is described further: shown in Fig. 1-2, the niche type interference screw, make screw 4 main bodys with metal medical titanium or titanium alloy, there is pilot hole 8 at screw 4 centers, screw 4 two sides cut into plane 6, have horizontal groove 7 at screw cutting planes 6 middle parts.Ailhead 9 external diameters are thin, hexagonal screw 3 and from body spongiosa surface of bone telltale mark 2 in nail is established in the tail 1, laterally embed patient from the body spongy bone in the groove 7 in the operation, patient obtains or gets ilium by rebuilding in performing the operation when ligament opens seam the tunnel from the body spongy bone, and uses the mould extrusion modling.To embed patient in the operation and screw in the fixing ligament of rebuilding of osseous tunnel extruding by allen driver from the niche type interference screw of body spongy bone.At this moment, patient is adjusted into towards ligament and offside tunnel wall from body spongiosa surface of bone, reaches the purpose that tendon-bone healing time shortens, healing back robustness increases by telltale mark 2.Since reduce and passivation screw thread 5, little to the cutting side effect of rebuilding ligament.
Claims (4)
1, niche type interference screw comprises screw, nail tail, it is characterized in that: screw (4) center has pilot hole (8) middle part to have horizontal groove (7).
2, niche type interference screw according to claim 1, nail tail (1) is provided with telltale mark (2).
3, niche type interference screw according to claim 1 is characterized in that: screw thread (5) is the passivation screw thread.
4, niche type interference screw according to claim 1 is characterized in that: laterally in the groove (7) people's bone is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080280 CN2889193Y (en) | 2006-01-14 | 2006-01-14 | Niche type interference bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080280 CN2889193Y (en) | 2006-01-14 | 2006-01-14 | Niche type interference bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2889193Y true CN2889193Y (en) | 2007-04-18 |
Family
ID=38019843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080280 Expired - Fee Related CN2889193Y (en) | 2006-01-14 | 2006-01-14 | Niche type interference bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2889193Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103099668A (en) * | 2013-02-22 | 2013-05-15 | 常州市斯博特医疗器械有限公司 | Expanding type extrusion nail |
| CN105395228A (en) * | 2015-12-22 | 2016-03-16 | 雷俊虎 | Bone tunnel cross fixing pin for orthopedics ligament reconstructive surgery |
| CN105769269A (en) * | 2016-02-22 | 2016-07-20 | 运怡（北京）医疗器械有限公司 | Hollow interface nail |
-
2006
- 2006-01-14 CN CN 200620080280 patent/CN2889193Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103099668A (en) * | 2013-02-22 | 2013-05-15 | 常州市斯博特医疗器械有限公司 | Expanding type extrusion nail |
| CN105395228A (en) * | 2015-12-22 | 2016-03-16 | 雷俊虎 | Bone tunnel cross fixing pin for orthopedics ligament reconstructive surgery |
| CN105769269A (en) * | 2016-02-22 | 2016-07-20 | 运怡（北京）医疗器械有限公司 | Hollow interface nail |
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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: 20070418 |