CN207125783U - Screw - Google Patents
Screw Download PDFInfo
- Publication number
- CN207125783U CN207125783U CN201720093457.0U CN201720093457U CN207125783U CN 207125783 U CN207125783 U CN 207125783U CN 201720093457 U CN201720093457 U CN 201720093457U CN 207125783 U CN207125783 U CN 207125783U
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- Prior art keywords
- screw
- push rod
- nail
- locking nail
- fixed
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Abstract
The utility model discloses a kind of screw, including：The body of screw and stabilizing mechanism；Stabilizing mechanism is arranged in the body of screw, when the body of screw enters interior of articles to be fixed, so that the body of screw is locked on object to be fixed at least partially embedded object to be fixed of stabilizing mechanism.So as to when carrying out prosthetic replacement's operation, situations such as severe osteoporosis, serious bony defect, sufferer strenuous exercise's early stage, after the body of screw enters prosthese and sclerotin, by at least partially embedded sclerotin for making stabilizing mechanism, so as to effectively strengthen fixed firmness, solve the problems, such as that Medical screw of the prior art can not be fixedly secured for the prosthetic replacement when severe osteoporosis, serious bony defect, sufferer strenuous exercise's early stage.
Description
Technical field
Medical device fields are the utility model is related to, in particular to a kind of screw.
Background technology
In modern Osteopathic Medicine, screw almost turns into every indispensable implant of operation.In prosthetic replacement, screw
Effect be fixed fae body and bone, ensure that the initial stage of prosthese is stable, particularly reduce the relative displacement between bone and prosthese, with
Prosthese is set to have preferable Bone Ingrowth, beneficial to the medium-term and long-term stabilization of prosthese.
Existing Medical screw can generally realize the good fixation of prosthese, but for severe osteoporosis,
Situations such as serious bony defect, sufferer strenuous exercise's early stage, existing Medical screw can not be fixedly secured, so as to cause vacation
Body can not good Bone Ingrowth, influence the prosthese life-span.
Utility model content
The utility model embodiment provides a kind of screw, at least to solve Medical screw of the prior art for serious
What the prosthetic replacement when osteoporosis, serious bony defect, sufferer strenuous exercise's early stage can not be fixedly secured asks
Topic.
According to the content of the utility model embodiment, there is provided a kind of screw, including：The body of screw；Stabilizing mechanism, stable machine
Structure is arranged on the body of screw, when the body of screw enters interior of articles to be fixed, at least partially embedded thing to be fixed of stabilizing mechanism
In vivo so that the body of screw is locked on object to be fixed.
Further, stabilizing mechanism includes：Multiple locking nails, each locking nail are respectively provided with from the inside of the body of screw to screw
The outside first position stretched out of body and the second place for the inside that the body of screw is retracted into by the outside of the body of screw；Wherein, lock
Mark closely when being in first position, the extension of locking nail is embedded in object to be fixed so that the body of screw to be locked.
Further, stabilizing mechanism also includes：Push rod, it is movably disposed in the body of screw, for by each locking nail
Ejected by the second place to first position.
Further, each locking nail is set along the radially displaceable of the body of screw；Wherein, opened up along the axial direction of the body of screw
Have a cylinder chamber matched with push rod, push rod be movably disposed in cylinder chamber with by each locking nail by the second place eject to
First position.
Further, multiple through holes connected with cylinder chamber are set in the side wall of the body of screw, are provided with each through hole
Location-plate；Wherein, telescopic hole is offered on location-plate, locking nail is telescopically disposed in telescopic hole with first position and the
Moved between two positions.
Further, external screw thread is provided with the side wall of location-plate, is provided with what is matched with external screw thread on the inwall of through hole
Internal thread, so that location-plate is spirally connected with through hole.
Further, stabilizing mechanism also includes：Multiple springs, each spring are set on a corresponding locking nail；
Wherein, the tail end of locking nail has the head of a nail, and the head of a nail is located at the inner side of location-plate, and the first end of spring abuts with the head of a nail, spring
Second end abuts with location-plate, so that locking nail is retracted to the second place by first position.
Further, the edge around the telescopic hole of location-plate has ring-shaped step structure, and the second end of spring is connected to
In ring-shaped step structure.
Further, the outer face of the head of a nail is the arcwall face being adapted to the side wall of push rod, when push rod is penetrated in cylinder chamber, top
Bar side wall is abutted with the arcwall face on the head of a nail so that locking nail is ejected to first position by the second place.
Further, the head of push rod is cone point.
Further, push rod, which has, is used for the insertion end inserted in cylinder chamber and is relatively fixed end with insertion end, push rod
Fixing end there is fixed thread, the opening of cylinder chamber is provided with the screw thread hole section to match with fixed thread, so that push rod
Fixing end and the opening of cylinder chamber be spirally connected.
Using the screw of technical solutions of the utility model, including：The body of screw and stabilizing mechanism；Stabilizing mechanism is arranged on screw
In vivo, when the body of screw enters interior of articles to be fixed, with by the body of screw at least partially embedded object to be fixed of stabilizing mechanism
It is locked on object to be fixed.So as to when carrying out prosthetic replacement's operation, be lacked for severe osteoporosis, serious sclerotin
Situations such as damage, sufferer strenuous exercise's early stage, after the body of screw enters prosthese and sclerotin, by making at least part of stabilizing mechanism embedding
Enter sclerotin, so as to effectively strengthen fixed firmness, solve Medical screw of the prior art for serious sclerotin
The problem of prosthetic replacement when loose, serious bony defect, sufferer strenuous exercise's early stage can not be fixedly secured.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the internal cross section structural representation according to optionally a kind of screw of the utility model embodiment；
Fig. 2 is according to optionally a kind of structural representation of the body of screw of screw of the utility model embodiment；
Fig. 3 is illustrated according to the body of screw of optionally a kind of screw of the utility model embodiment and the Split type structure of push rod
Figure；
Fig. 4 is according to optionally a kind of structural representation of the location-plate of screw of the utility model embodiment；
Fig. 5 is according to optionally a kind of structural representation of the stabilizing mechanism of the body of screw of screw of the utility model embodiment
Fig. 6 is according to optionally a kind of structural representation of the locking nail of screw of the utility model embodiment；And
Fig. 7 is according to optionally a kind of structural representation of the push rod of screw of the utility model embodiment.
10th, the body of screw；11st, through hole；20th, stabilizing mechanism；21st, locking nail；211st, the head of a nail；22nd, push rod；23rd, spring；30、
Location-plate；31st, telescopic hole；32nd, ring-shaped step structure.
Embodiment
In order that those skilled in the art more fully understand the utility model, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that be described
Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all should
When the scope for belonging to the utility model protection.
According to the screw of the utility model embodiment, as shown in figure 1, including：The body of screw 10 and stabilizing mechanism 20；Stable machine
Structure 20 is arranged on the body of screw 10, when the body of screw 10 enter interior of articles to be fixed when, stabilizing mechanism 20 it is at least partially embedded
So that the body of screw 10 is locked on object to be fixed in object to be fixed.
Using the screw of technical solutions of the utility model, including：The body of screw 10 and stabilizing mechanism 20；Stabilizing mechanism 20 is set
In the body of screw 10, when the body of screw 10 enters interior of articles to be fixed, at least partially embedded object to be fixed of stabilizing mechanism 20
It is interior so that the body of screw 10 is locked on object to be fixed.So as to when carrying out prosthetic replacement's operation, be dredged for serious sclerotin
Situations such as loose, serious bony defect, sufferer strenuous exercise's early stage, after the body of screw 10 enters prosthese and sclerotin, by making stabilization
At least partially embedded sclerotin of mechanism 20, so as to effectively strengthen fixed firmness, solves doctor of the prior art
With screw for the prosthetic replacement when severe osteoporosis, serious bony defect, sufferer strenuous exercise's early stage without
The problem of method is fixedly secured.
When it is implemented, stabilizing mechanism 20 includes：Multiple locking nails 21 and push rod 22, each locking nail 21 are respectively provided with by spiral shell
The inside of rivet nut 10 is retracted into the body of screw 10 to the outside first position stretched out of the body of screw 10 and by the outside of the body of screw 10
Inside the second place；Push rod 22 is movably disposed in the body of screw 10, will be each when push rod 22 moves in the body of screw 10
Individual locking nail 21 is ejected to first position by the second place, i.e., makes its extension embedding by ejection in the body of screw 10 locking nail 21
Enter prosthese and it is intra-articular the body of screw 10 is locked, so as to strengthen the fastening effect of the body of screw 10.
Specifically, in order to ensure the stability of each locking nail 21, further, each locking nail 21 is along the body of screw 10
Set radially displaceablely；
As shown in Figures 2 and 3, the cylinder chamber matched with push rod 22 is offered along the axial direction of the body of screw 10, push rod 22 is removable
It is arranged on dynamicly in cylinder chamber so that radial direction of each locking nail 21 along the body of screw 10 is ejected to first position by the second place；
Multiple through holes 11 connected with cylinder chamber are set in the side wall of the body of screw 10, location-plate 30 is provided with each through hole 11；Such as
Shown in Fig. 4, telescopic hole 31 is offered on location-plate 30, telescopic hole 31 radially extends along the body of screw 10, and locking nail 21 is scalable
Ground is arranged in telescopic hole 31 will be locked with being moved between the first position and the second position along the radial direction of the body of screw 10 so as to realize
Mark closely 21 ejections.
Shown as shown in Figure 1, Figure 3 and Figure 4 in order to facilitate the installation of locking nail 21, each location-plate 30 is removably mounted on
In a corresponding through hole 11, specifically, external screw thread is provided with the side wall of location-plate 30, be provided with the inwall of through hole 11 with
The internal thread of external screw thread matching, location-plate 30 are spirally connected by screw thread and through hole 11, so that in installation locking nail 21, by locking nail
21 are located in the telescopic hole 31 on location-plate 30, then by locking nail 21 and the integral installation of location-plate 30 in through hole 11.
, it is necessary to ensure that each locking nail 21 is retracted in the body of screw 10 before the body of screw 10 not yet hammers into prosthese and joint
Interior, therefore, further, as shown in Figure 1 and Figure 5, stabilizing mechanism 20 also includes：Multiple springs 23, each spring 23 are arranged
On a corresponding locking nail 21；Wherein, the tail end of locking nail 21 has the head of a nail 211, and the head of a nail 211 is located at the interior of location-plate 30
Side, the first end of spring 23 abut with the head of a nail 211, and the second end of spring 23 abuts with location-plate 30, so as to by locking nail 21
With the integral installation of location-plate 30 after through hole 11 is interior, before push rod 22 is not yet inserted in the cylinder chamber of the body of screw 10, in the bullet of spring 23
In the presence of power, locking nail 21 is retracted in the through hole 11 of the body of screw 10 so that the body of screw 10 can normally hammer into prosthese and
It is intra-articular.
In order to keep the stabilization of spring 23, prevent spring 23 from rocking, further, as shown in figure 4, around location-plate 30
The edge of telescopic hole 31 have ring-shaped step structure 32, the second end of spring 23 is connected in ring-shaped step structure 32, from
And prevent the second end of spring 23 from being slided on location-plate 30.
In order to be adapted when push rod 22 is inserted in the cylinder chamber of the body of screw 10 with locking nail 21, further, such as
Shown in Fig. 6, the outer face of the head of a nail 211 of each locking nail 21 is the arcwall face being adapted to the side wall of push rod 22, and push rod 22 penetrates
When in cylinder chamber, the side wall of push rod 22 is abutted with the arcwall face on the head of a nail 211 with so that by locking nail 21 by being ejected in the body of screw 10.
, can be one by one by each locking nail 21 by the body of screw 10 in order to be inserted in push rod 22 in the cylinder chamber of the body of screw 10
Portion outwards ejects, and further, as shown in fig. 7, the head of push rod 22 is cone point, cone point is touching locking nail 21
The head of a nail 211 when can by locking nail 21 gradually outwards ejection.
After in push rod 22 by all locking nails 21 completely ejection, the stabilization of each locking nail 21 is kept, further,
Be used for the insertion end inserted in cylinder chamber as shown in fig. 7, push rod 22 has and be relatively fixed end with insertion end, push rod 22 it is slotting
It is cone point to enter end, and the fixing end of push rod 22 has fixed thread, and the opening of cylinder chamber is provided with and fixed thread phase
The screw thread hole section of matching, after push rod 22 completely into ejecting all locking nails 21 in cylinder chamber completely, push rod 22 is consolidated
The opening of fixed end and cylinder chamber is spirally connected by screw thread, so as to prevent push rod 22 from being slided in cylinder chamber, ensures each lock
Mark closely 21 stabilization.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (11)
- A kind of 1. screw, it is characterised in that including：The body of screw (10)；Stabilizing mechanism (20), the stabilizing mechanism (20) are arranged on the body of screw (10), when the body of screw (10) enters During interior of articles to be fixed, with by the body of screw at least partially embedded object to be fixed of the stabilizing mechanism (20) (10) it is locked on the object to be fixed.
- 2. screw according to claim 1, it is characterised in that the stabilizing mechanism (20) includes：Multiple locking nails (21), each locking nail (21) are respectively provided with from the inside of the body of screw (10) to the body of screw (10) first position of outside stretching and the inside that the body of screw (10) are retracted into by the outside of the body of screw (10) The second place；Wherein, when the locking nail (21) is in the first position, treated described in the extension insertion of the locking nail (21) So that the body of screw (10) to be locked in fixed object.
- 3. screw according to claim 2, it is characterised in that the stabilizing mechanism (20) also includes：Push rod (22), be movably disposed in the body of screw (10), for by each locking nail (21) by described the Two positions are ejected to the first position.
- 4. screw according to claim 3, it is characterised in that each locking nail (21) is along the body of screw (10) Set radially displaceablely；Wherein, the cylinder chamber matched with the push rod (22), the push rod (22) are offered along the axial direction of the body of screw (10) It is movably disposed in the cylinder chamber so that each locking nail (21) is ejected to described first by the second place Position.
- 5. screw according to claim 4, it is characterised in that set in the side wall of the body of screw (10) it is multiple with it is described The through hole (11) of cylinder chamber connection, each through hole (11) is interior to be provided with location-plate (30)；Wherein, telescopic hole (31) is offered on the location-plate (30), the locking nail (21) is telescopically disposed in described stretch To be moved between the first position and the second place in shrinkage cavity (31).
- 6. screw according to claim 5, it is characterised in that external screw thread is provided with the side wall of the location-plate (30), The internal thread matched with the external screw thread is provided with the inwall of the through hole (11), so that the location-plate (30) leads to described Hole (11) is spirally connected.
- 7. screw according to claim 5, it is characterised in that the stabilizing mechanism (20) also includes：Multiple springs (23), each spring (23) are set on corresponding one locking nail (21)；Wherein, the tail end of the locking nail (21) has the head of a nail (211), and the head of a nail (211) is located at the location-plate (30) Inner side, the first end of the spring (23) abut with the head of a nail (211), the second end and the location-plate of the spring (23) (30) abut, so that the locking nail (21) is retracted to the second place by the first position.
- 8. screw according to claim 7, it is characterised in that around the side of the telescopic hole (31) of the location-plate (30) Edge offers ring-shaped step structure (32), and the second end of the spring (23) is connected in the ring-shaped step structure (32).
- 9. screw according to claim 7, it is characterised in that the outer face of the head of a nail (211) is and the push rod (22) side wall adaptation arcwall face, when the push rod (22) is penetrated in the cylinder chamber, push rod (22) side wall with it is described The arcwall face on the head of a nail (211) is abutted so that the locking nail (21) is ejected to described first by the second place Put.
- 10. screw according to claim 4, it is characterised in that the head of the push rod (22) is cone point.
- 11. screw according to claim 4, it is characterised in that the push rod (22), which has, to be used to insert the cylinder chamber Interior insertion end and it is relatively fixed end with the insertion end, the fixing end of the push rod (22) has fixed thread, the post The opening of shape chamber is provided with the screw thread hole section to match with the fixed thread, so that the fixing end of the push rod (22) and institute The opening for stating cylinder chamber is spirally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720093457.0U CN207125783U (en) | 2017-01-22 | 2017-01-22 | Screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720093457.0U CN207125783U (en) | 2017-01-22 | 2017-01-22 | Screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207125783U true CN207125783U (en) | 2018-03-23 |
Family
ID=61630190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720093457.0U Active CN207125783U (en) | 2017-01-22 | 2017-01-22 | Screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207125783U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691570A (en) * | 2017-01-22 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Bolt |
| CN109602486A (en) * | 2018-12-31 | 2019-04-12 | 武汉德骼拜尔外科植入物有限公司 | A kind of internal fixation of spine joint coupling |
-
2017
- 2017-01-22 CN CN201720093457.0U patent/CN207125783U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691570A (en) * | 2017-01-22 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Bolt |
| CN106691570B (en) * | 2017-01-22 | 2020-11-06 | 北京爱康宜诚医疗器材有限公司 | Screw nail |
| CN109602486A (en) * | 2018-12-31 | 2019-04-12 | 武汉德骼拜尔外科植入物有限公司 | A kind of internal fixation of spine joint coupling |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |