CN208677484U - A kind of anti-cutting interference screw of novel driving into type - Google Patents
A kind of anti-cutting interference screw of novel driving into type Download PDFInfo
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- CN208677484U CN208677484U CN201820255973.3U CN201820255973U CN208677484U CN 208677484 U CN208677484 U CN 208677484U CN 201820255973 U CN201820255973 U CN 201820255973U CN 208677484 U CN208677484 U CN 208677484U
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- screw
- interference screw
- driving
- plane
- interference
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Abstract
The utility model discloses a kind of novel anti-cutting interference screws of driving into type, including screw body, the screw body is made of rivet nut, ailhead and nail tail, the ailhead is arc-shaped, the rivet nut side surface is made of stationary plane and compressive plane, imbrication shape screw thread successively arranged in parallel is set on the stationary plane, and the compressive plane is smooth smooth surface, and tooling hole is arranged in the nail tail.The design scheme is driving into type interference screw, using in nail tail treatment tool hole, corresponding handle is combined with by outside, interference screw is squeezed into bone road in a manner of impact, it overcomes traditional screw-in interference screw is screwed into bone road, and then achieve the effect that prevent screw from twisting into two parts, without secondary operation, avoid the secondary pain of injury of injury personnel, meanwhile the compressive plane in rivet nut is smooth flat, overcomes the problem of screw thread on traditional interference screw cuts ligament, reach enhancing ligament fastness, avoids the effect of the fixed risk to fail.
Description
Technical field
The utility model relates to orthopedic medical device technical fields, and in particular to a kind of novel anti-cutting interface spiral shell of driving into type
Nail.
Background technique
Interference screw is fixed for the soft tissues such as tendon, ligament and bone to be passed through fashion of extrusion in a kind of Minimally Invasive Surgery
Micro device, be mainly used for anterior cruciate ligament (ACL), in posterior cruciate ligament (PCL) Reconstruction to the soft tissues such as bone and tendon
It is fixed, it has been widely used in medical domain, but it to be that interference screw used at present is with screw-in that there are main problems
It is main, there can be the risk for twisting off interference screw when torsion is excessive, need repeated work, increase the secondary wound of injury personnel
Bitterly, meanwhile, nondegradable nail sheath is complicated for operation on the market, postoperative to cut to ligament, reduces ligament fastness, or even solid
Surely the risk to fail.
Summary of the invention
To solve the above problems, the utility model discloses a kind of novel anti-cutting interference screw of driving into type, purpose exists
In solving interference screw used at present based on screw-in, there can be the risk for twisting off interference screw when torsion is excessive, need
Repeated work is wanted, the secondary pain of injury of injury personnel is increased, meanwhile, nondegradable nail sheath is complicated for operation in the market, postoperative need
Ligament is cut, reduces ligament fastness, or even the problem of the fixed risk to fail.
In order to reach the goals above, the utility model provides the following technical solutions: a kind of novel anti-cutting interface of driving into type
Screw, including screw body, the screw body are made of rivet nut, ailhead and nail tail, and the ailhead is arc-shaped, the nail
Body side surface is made of stationary plane and compressive plane, and imbrication shape screw thread successively arranged in parallel is arranged on the stationary plane, described to squeeze
Pressure surface is smooth smooth surface, and tooling hole is arranged in the nail tail.The design scheme is driving into type interference screw, disposes work using in nail tail
Have hole, corresponding handle is combined with by outside, is squeezed into interference screw in bone in a manner of impact, overcomes traditional twist
Enter formula interference screw is screwed into bone, and then achieved the effect that prevent screw from twisting into two parts, is not necessarily to secondary operation, avoids injury people
The secondary pain of injury of member, meanwhile, the compressive plane in rivet nut is smooth flat, overcomes the screw thread on traditional interference screw to ligament
The problem of cutting, has reached enhancing ligament fastness, avoids the effect of the fixed risk to fail；By the Design of Screw Thread on stationary plane at
Stacked tile type screw thread, ailhead are designed as arc-shaped, effectively reduce the resistance that interference screw enters in bone, while also enhancing boundary
Resistance to plucking output capacity and fixing intensity of the face screw in bone；Rivet nut is divided into stationary plane and compressive plane, is set on stationary plane
Imbrication shape screw thread successively arranged in parallel is set, compressive plane is smooth smooth surface, and structure design is simple, ingenious, subsequent machining technology letter
Single, convenient for promoting, imbrication shape screw thread quantity determines that design is several according to actual production.
As a kind of improvement of the utility model, the rivet nut, ailhead and nail tail are an integral molding structure.
As a kind of improvement of the utility model, the stationary plane is contacted with cancellous bone, and the compressive plane is contacted with ligament.
It is fixed on cancellous bone using stationary plane, by the way of the fixed ligament of compressive plane extruding, overcomes the spiral shell on traditional interference screw
Line cutting ligament causes ligament there is a situation where being broken, and has reached fixing intensity of effective enhancing tendon in bone, has shortened operation
Recovery time mitigates the effect of patient suffering.
As a kind of improvement of the utility model, the stationary plane accounts for 2/3rds of the area of screw body side surface,
The compressive plane accounts for the one third of the area of screw body side surface.
As a kind of improvement of the utility model, internal screw thread is set inside the tooling hole.By being set inside tooling hole
It sets internal screw thread and is closely connect with outer handle, both can squeeze into or extract interference screw, overcoming certain interference screws needs
The problem of being connect by more complex mode with peripheral driver, the connection type is easy to operate, clear, convenient for operation.
As a kind of improvement of the utility model, the tooling hole is from the nail tail to the ailhead along axial direction at default
The blind hole of column degree.
As a kind of improvement of the utility model, the interference screw is by l-lactic acid (PLLA) and hydroxyapatite
(HA) one of material is made and forms.PLLA has good activity and biodegradability, HA are inorganic material, with bone
In natural HA it is similar, the two has good biocompatibility, bioactivity and bone guided activity, can not only guide new life
Bone from host bone along implant several times or implant growth inside, and have good synostosis.
Opposite and the prior art, the utility model have the advantages that
1) design scheme is driving into type interference screw, using in nail tail treatment tool hole, is combined with accordingly by outside
Handle, interference screw is squeezed into bone in a manner of impact, traditional screw-in is overcome and interference screw is screwed into bone
It is interior, and then achieved the effect that prevent screw from twisting into two parts and preventing screw thread from cutting ligament, it is not necessarily to secondary operation, avoids injury personnel's
The secondary pain of injury, meanwhile, the problem of ligament is cut bunchy by traditional non-degradable nail sheath requirement is overcome, enhancing ligament has been reached
Fastness avoids the effect of the fixed risk to fail；By the Design of Screw Thread on stationary plane at stacked tile type screw thread, ailhead is designed as circular arc
Shape effectively reduces the resistance that interference screw enters in bone, while also enhancing resistance to plucking of the interference screw in bone and going out energy
Power and fixing intensity；Rivet nut is divided into stationary plane and compressive plane, imbrication shape spiral shell successively arranged in parallel is set on stationary plane
Line, compressive plane are smooth smooth surface, avoid cutting of the screw thread to ligament, and structure design is simple, ingenious, subsequent machining technology letter
Single, convenient for promoting, imbrication shape screw thread quantity determines that design is several according to actual production；
2) be fixed on cancellous bone using stationary plane, compressive plane is squeezed by the way of tendon, overcome traditional interference screw
On screw thread cutting ligament cause ligament generation to be broken, reached effective fixing intensity of the enhancing tendon in bone, contracted
Short surgical recovery time mitigates the effect of patient suffering；
3) it is closely connect by the way that internal screw thread is arranged inside tooling hole with outer handle, both can squeeze into or extract boundary
Face screw overcomes certain interference screws and needs the problem of connecting by more complex mode with peripheral driver, the connection side
Formula is easy to operate, clear, convenient for operation；
4) material of interference screw is made by one of material of l-lactic acid (PLLA) and hydroxyapatite (HA)
It forms.PLLA has good activity and biodegradability, HA are inorganic material, similar to HA natural in bone, the two tool
There are good biocompatibility, bioactivity and bone guided activity, area of new bone can not only be guided several along implant from host bone
Face or implant growth inside, and there is good synostosis.
Detailed description of the invention
Fig. 1 is a kind of novel anti-cutting interference screw overall structure diagram of driving into type of the utility model；
Fig. 2 is a kind of novel anti-cutting interference screw end construction schematic diagram of driving into type of the utility model；
Reference signs list: 1, screw body；2, rivet nut；3, ailhead；4, tail is followed closely；21, stationary plane；211, imbrication shape spiral shell
Line；22, compressive plane；5, tooling hole.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Embodiment 1: please also refer to Fig. 1 and Fig. 2, now to a kind of novel anti-cutting circle of driving into type provided by the utility model
Face screw is illustrated, and interference screw includes screw body 1, and the screw body 1 is made of rivet nut 2, ailhead 3 and nail tail 4,
The ailhead 3 be it is arc-shaped, 2 side surface of rivet nut is made of stationary plane 21 and compressive plane 22, is arranged on the stationary plane 21
Successively imbrication shape screw thread 211 arranged in parallel, the compressive plane 22 are smooth smooth surface, and tooling hole 5 is arranged in the nail tail 4.This sets
Meter scheme is driving into type interference screw, using in nail tail treatment tool hole, corresponding handle is combined with by outside, with impact
Mode squeezes into interference screw in bone, overcomes traditional screw-in and interference screw is screwed into bone, and then has reached anti-
The only effect that screw is twisted into two parts is not necessarily to secondary operation, avoids the secondary pain of injury of injury personnel, meanwhile, the compressive plane in rivet nut is light
Sliding plane overcomes the problem of screw thread on traditional interference screw cuts tendon, has reached enhancing ligament fastness, avoids solid
Surely the effect of the risk to fail；By the Design of Screw Thread on stationary plane at stacked tile type screw thread, ailhead is designed as arc-shaped, effectively subtracts
Small interface screw enters the resistance in bone, while it is strong to also enhance resistance to plucking output capacity and fixation of the interference screw in bone
Degree；Rivet nut is divided into stationary plane and compressive plane, imbrication shape screw thread successively arranged in parallel is set on stationary plane, and compressive plane is flat
Sliding smooth surface, structure design is simple, ingenious, and subsequent machining technology is simple, and convenient for promoting, imbrication shape screw thread quantity is according to actual production
Determine that design is several.
Embodiment 2: referring to Fig. 1, as a kind of improvement of the utility model, the rivet nut 2, ailhead 3 and nail tail 4 are one
Forming structure.
Embodiment 3: referring to fig. 2, as a kind of improvement of the utility model, the stationary plane 21 is contacted with cancellous bone, institute
Compressive plane 22 is stated to contact with ligament.It is fixed on cancellous bone using stationary plane 21, by the way of the fixed ligament of the extruding of compressive plane 22, gram
The interface screw thread cutting ligament taken on traditional interference screw causes ligament there is a situation where being broken, and has reached effective enhancing flesh
Fixing intensity of the tendon in bone shortens surgical recovery time, mitigates the effect of patient suffering.
Embodiment 4: referring to fig. 2, as a kind of improvement of the utility model, the stationary plane 21 accounts for 1 side table of screw body
2/3rds of the area in face, the compressive plane 22 account for the one third of the area of 1 side surface of screw body.
Embodiment 5: referring to Fig. 1, as a kind of improvement of the utility model, internal screw thread is set inside the tooling hole 5.It is logical
It crosses the setting internal screw thread inside tooling hole closely to connect with outer handle, both can squeeze into or extract interference screw, overcome
Certain interference screws need the problem of connecting by more complex mode with peripheral driver, the connection type is easy to operate,
Clearly, convenient for operation.
Embodiment 6: referring to Fig. 1, as a kind of improvement of the utility model, the tooling hole 5 is along axial direction from the nail
Tail is to the ailhead at the blind hole of default column degree.
Embodiment 7: as a kind of improvement of the utility model, the interference screw is by l-lactic acid (PLLA) and hydroxyl
One of material of apatite (HA) is made and forms.PLLA has good activity and biodegradability, HA are inorganic materials
Material, similar to HA natural in bone, the two has good biocompatibility, bioactivity and bone guided activity, can not only
It guides area of new bone from host bone along implant several times or implant growth inside, and there is good synostosis.
The utility model can also be by least one of described technical characteristic of embodiment 2,3,4,5,6,7 and embodiment 1
Combination forms new embodiment.
Technological means disclosed in the utility model is not limited only to technological means disclosed in above embodiment, also
Including technical solution consisting of any combination of the above technical features.It should be pointed out that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (7)
1. a kind of anti-cutting interference screw of novel driving into type, it is characterised in that: the interference screw includes screw body, the spiral shell
Nail main body by rivet nut, ailhead and nail tail form, the ailhead be it is arc-shaped, the rivet nut side surface is by stationary plane and compressive plane
It forms, imbrication shape screw thread successively arranged in parallel is set on the stationary plane, the compressive plane is smooth smooth surface, and the nail tail is set
Set tooling hole.
2. a kind of novel anti-cutting interference screw of driving into type according to claim 1, it is characterised in that: the rivet nut, nail
Head and nail tail are an integral molding structure.
3. a kind of novel anti-cutting interference screw of driving into type according to claim 1, it is characterised in that: the stationary plane with
Cancellous bone contact, the compressive plane are contacted with ligament.
4. a kind of novel anti-cutting interference screw of driving into type according to claim 1, it is characterised in that: the stationary plane accounts for
2/3rds of the area of screw body side surface, the compressive plane account for the one third of the area of screw body side surface.
5. a kind of novel anti-cutting interference screw of driving into type according to claim 1, it is characterised in that: in the tooling hole
Internal screw thread is arranged in portion.
6. a kind of novel anti-cutting interference screw of driving into type according to claim 1, it is characterised in that: the tooling hole is
Along axial direction from the nail tail to the ailhead at the blind hole of default column degree.
7. a kind of novel anti-cutting interference screw of driving into type according to claim 1, it is characterised in that: the interference screw
It is made and is formed by one of material of l-lactic acid (PLLA) and hydroxyapatite (HA).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820255973.3U CN208677484U (en) | 2018-02-13 | 2018-02-13 | A kind of anti-cutting interference screw of novel driving into type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820255973.3U CN208677484U (en) | 2018-02-13 | 2018-02-13 | A kind of anti-cutting interference screw of novel driving into type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208677484U true CN208677484U (en) | 2019-04-02 |
Family
ID=65875569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820255973.3U Expired - Fee Related CN208677484U (en) | 2018-02-13 | 2018-02-13 | A kind of anti-cutting interference screw of novel driving into type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208677484U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111803720A (en) * | 2020-05-28 | 2020-10-23 | 广州新诚生物科技有限公司 | Absorbable interface screw with high fixing strength |
-
2018
- 2018-02-13 CN CN201820255973.3U patent/CN208677484U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111803720A (en) * | 2020-05-28 | 2020-10-23 | 广州新诚生物科技有限公司 | Absorbable interface screw with high fixing strength |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190402 Termination date: 20200213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |