CN202637620U - Disposable retracted safety injection needle - Google Patents
Disposable retracted safety injection needle Download PDFInfo
- Publication number
- CN202637620U CN202637620U CN 201220250969 CN201220250969U CN202637620U CN 202637620 U CN202637620 U CN 202637620U CN 201220250969 CN201220250969 CN 201220250969 CN 201220250969 U CN201220250969 U CN 201220250969U CN 202637620 U CN202637620 U CN 202637620U
- Authority
- CN
- China
- Prior art keywords
- core bar
- overcoat
- injection needle
- piston
- safe injection
- 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 - Lifetime
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disposable retracted safety injection needle which comprises an outer sleeve, a core bar, a needle tube, a piston or an O-shaped ring, and a protective jacket, wherein the core bar is inserted in the outer sleeve and provided with a passage. A handle is arranged at the upper end portion of the core bar, a needle tube hole which is communicated with the passage is arranged at the lower end portion of the core bar, a circle of card slot is arranged on the outer wall of the core bar, the piston or the O-shaped ring is arranged between the card slot and the outer sleeve in a clamping mode, relative move of the core bar and the outer sleeve is driven by relative move between the piston or the O-shaped ring and the outer sleeve, and a plurality of through type notches are arranged on the inner wall at the upper end of the outer sleeve. When the piston or the o-shaped ring moves to the through type notches, the piston or the O-shaped ring is clamped in the through type notches. The needle tube is fixed in the needle tube hole and the protective jacket is arranged at the lower end portion of the core bar. The disposable retracted safety injection needle remits an over-tightened phenomenon in retraction process of an injection needle and greatly reduces medical risk of the injection needle.
Description
Technical field
This utility model relates to a kind of entry needle, particularly relates to a kind of disposable use retraction safe injection needle.
Background technology
Entry needle is one of medical device product of present global sales maximum.Yet, it is worth noting, countries in the world hospital occurs millions of person-times because human injury's accident that syringe needle ruptures or medical personnel's misoperation causes is annual at present.The statistical data that American Medical Association announces shows, only the U.S. 1,000,000 person-times of medical personnel's accidents approximately occur every year is injected the needlestick injury accident, the hepatitis B virus, hepatitis C virus and the AIDS viral infection that wherein have at least over thousands of people to be adhered on the syringe needle.The emergency treatment expense that the medical personnel that at every turn stabbed because of the blood collection needles fracture and patient produce is 3000 dollars per capita.
The medical-risk that the normal injection pin causes can not be lower than the medical-risk of syringe.The research and development that at present domestic and international company drops into the safety injection medical device in succession energetically, a lot of not enough but these safety injection equipment on the existing market exist: first production cost is very high; It two is complex manufacturing; It three is that the quality of production is difficult to guarantee; It four is medical personnel's complex operations; It five is that security function is difficult to guarantee.And entry needle produces the tension phenomenon because of material cause in retraction process.
Therefore, develop a kind of disposable use retraction safe injection needle and have great and long-range meaning.
The utility model content
The technical problems to be solved in the utility model is that safe injection needle medical-risk in the prior art is low in order to overcome, easily produce the defective of tension phenomenon in complicated operation and the retraction process, and a kind of disposable use retraction safe injection needle is provided.
This utility model solves above-mentioned technical problem by following technical proposals: a kind of disposable use retraction safe injection needle, comprise that an overcoat, has core bar and a needle tubing of a passage, described core bar is inserted in the described overcoat, its characteristics are, described safe injection needle also comprises a piston or an O type circle and a sheath;
The upper end of described core bar is provided with one handle, and the bottom be provided with one with the needle tubing hole of described channel connection, on the outer wall of described core bar, also be provided with a circle draw-in groove, described piston or described O type circle are arranged between described draw-in groove and the described overcoat, drive described core bar and described overcoat relatively moves by relatively moving between described piston or described O type circle and the described overcoat;
Offer several through notches on the upper end inwall of described overcoat, when described piston or described O type circle moved to described through notch place, described piston or described O type circle snapped in the described through notch;
Described needle tubing is fixed in the described needle tubing hole; Described sheath is set in the bottom of described core bar, and entangles described needle tubing.
Preferably, described handle is convex tendon cylinder handle or spirillum handle.
Preferably, the upper end of described handle has the spiral mouth.
Preferably, described passage is one to run through the passage of described core bar, and the diameter of described passage is less than or equal to 3mm.
Preferably, the upper end of described core bar also offers a connection vertebra head, described connection vertebra head and described channel connection.
Preferably, described piston or described O type circle and described draw-in groove are interference fit, and described piston or described O type circle and described overcoat are interference fit.
Preferably, described core bar and described overcoat are matched in clearance.
Preferably, the bottom of described sheath and described core bar is interference fit.
Preferably, the upper end of described draw-in groove is provided with a core bar screens, and the inwall upper end of described overcoat is provided with an overcoat screens, and described core bar screens withholds when contacting with described overcoat screens mutually.
Preferably, described core bar is formed by connecting by two rod members, passes through vertebra head interference fit between the described rod member.
In this utility model, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge namely gets each preferred embodiment of this utility model.
Positive progressive effect of the present utility model is: the disposable use retraction of this utility model safe injection needle is by the setting of through notch, utilize its expansion, alleviate the tension phenomenon in the injection needle restoring process, position so that the piston of core bar or described O type circle are fastened in the through notch.This entry needle can effectively be avoided the accident of stabbing, and greatly reduces the medical-risk of entry needle.In addition, it is simple in structure and easy to operate, efficiently solves the existing problem that the safety injector manufacturing cost is high and generating process is complicated.
Description of drawings
Fig. 1 is the structural representation of the disposable use retraction of this utility model safe injection needle.
Fig. 2 is the structural representation of overcoat in the disposable use retraction of this utility model safe injection needle.
Fig. 3 is the overall structure schematic diagram of core bar in the disposable use retraction of this utility model safe injection needle.
Fig. 4 is the profile of A-A along the line among Fig. 3.
The specific embodiment
Provide this utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
Such as Fig. 1-shown in Figure 4, the disposable use retraction of this utility model safe injection needle comprises a core bar 1, an overcoat 2 and a needle tubing 3.Wherein, core bar 1 is inserted in the overcoat 2, has a passage 11 in the core bar 1.Preferably, passage 11 is the passage of consistent punching bar 1, and the diameter of described passage is less than or equal to 3mm.Be provided with one handle 15 in the upper end of core bar 1, and the bottom is provided with a needle tubing hole 13 that is communicated with passage 11.Needle tubing 3 is fixed in the needle tubing hole 13.On the outer wall of core bar 1, also be provided with a circle draw-in groove 12.
Described safe injection needle can also comprise a piston 5 or described O type circle and a sheath 4, and piston 5 or described O type circle are fastened between draw-in groove 12 and the overcoat 2.Take piston as example, can drive core bar 1 by relatively moving between piston 5 and the overcoat 2 and relatively move with overcoat 2 in the present embodiment.Adopt sheath 4 to be set in the bottom of core bar 1, thereby entangle needle tubing 3.
Especially, as shown in Figure 2, offer several through notches 22 at the upper end of overcoat 2 inwall.On the inwall of the upper end of overcoat 2, also be provided with screens 23, through notch 22 be positioned at screens 23 around.When core bar 1 moved up retraction, the piston 5 on the core bar 1 produced friction with the inwall of overcoat 2, in case when piston 5 moved to through notch 22 place, piston 5 snapped in the through notch 22.This structure can effectively solve the tension phenomenon that produces because of material cause between overcoat 2 and the core bar 1, and core bar 1 can snap in through notch 22 like a cork thus, thereby it is fixing to be positioned.
Preferably, handle 15 is convex tendon cylinder handle or spirillum handle, and in the upper end of handle 15 spiral mouth 151 is set.The operation that the convenient operation personnel are set of handle 15, spiral mouth 151 are convenient to entry needle and are connected on the miscellaneous part.
Simultaneously, for flexibility ratio and the tautness that guarantees that entry needle uses, adopt interference fit or matched in clearance between each parts.For example, piston 5 is interference fit with draw-in groove 12, and piston 5 is interference fit with overcoat 2, and core bar 1 is matched in clearance with overcoat 2, and sheath 4 is interference fit with the bottom of core bar 1.In addition, also offer one in the upper end of core bar 1 and connect vertebra head 14, be communicated with passage 11 so that connect vertebra head 14.Like this, can easily entry needle be connected on outward on the miscellaneous part by connecting vertebra head 14, widen the scope of application of this entry needle.
Further, be provided with a core bar screens 121 in the upper end of draw-in groove 12, the inwall upper end of overcoat 2 is provided with an overcoat screens 21.When core bar 1 is upwards lifted top to overcoat 2, core bar screens 121 contacts with overcoat screens 21, this moment core bar screens 121 and overcoat screens 21 withholds mutually, and core bar 1 can not upwards be lifted again, can prevent effectively that pulling force from crossing senior general's core bar 1 and lifting out overcoat 2.
In addition, for convenient for production, core bar 1 can be formed by connecting by two rod members at the place, centre position, passes through a vertebra head interference fit (not shown) between the described rod member, and bonding with glue, thereby further guarantees the firmness that both connect.
According to said structure, concrete occupation mode of the present utility model is as follows: described safe injection needle and infusion series products support the use.After infusion is finished, overcoat 2 is promoted forward, piston 5 relative overcoats 2 produce relative displacement, also relatively move with overcoat 2 thereby drive core bar 1, until core bar screens 121 slides into overcoat screens 21 places.At this moment, needle tubing 3 just has been hidden in the overcoat 2, and accident has not been stabbed the people to needle tubing 3 with regard to not exposing like this.Safe injection needle described in the utility model is simple in structure and easy to use, can prevent effectively that entry needle from stabbing accident, greatly reduces the medical-risk of entry needle.
Although more than described the specific embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make various changes or modifications to these embodiments under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.
Claims (10)
1. a disposable use retraction safe injection needle comprises that an overcoat, has core bar and a needle tubing of a passage, and described core bar is inserted in the described overcoat, it is characterized in that, described safe injection needle also comprises a piston or an O type circle and a sheath;
The upper end of described core bar is provided with one handle, and the bottom be provided with one with the needle tubing hole of described channel connection, on the outer wall of described core bar, also be provided with a circle draw-in groove, described piston or described O type circle are arranged between described draw-in groove and the described overcoat, drive described core bar and described overcoat relatively moves by relatively moving between described piston or described O type circle and the described overcoat;
Offer several through notches on the upper end inwall of described overcoat, when described piston or described O type circle moved to described through notch place, described piston or described O type circle snapped in the described through notch;
Described needle tubing is fixed in the described needle tubing hole; Described sheath is set in the bottom of described core bar, and entangles described needle tubing.
2. disposable use retraction safe injection needle as claimed in claim 1 is characterized in that, described handle is convex tendon cylinder handle or spirillum handle.
3. disposable use retraction safe injection needle as claimed in claim 2 is characterized in that, the upper end of described handle has the spiral mouth.
4. disposable use retraction safe injection needle as claimed in claim 3 is characterized in that, described passage is one to run through the passage of described core bar, and the diameter of described passage is 0.2mm ~ 3mm.
5. disposable use retraction safe injection needle as claimed in claim 4 is characterized in that, the upper end of described core bar also offers one and connects vertebra head, described connection vertebra head and described channel connection.
6. disposable use retraction safe injection needle as claimed in claim 1 is characterized in that, described piston or described O type circle and described draw-in groove are interference fit, and described piston or described O type circle and described overcoat are interference fit.
7. disposable use retraction safe injection needle as claimed in claim 1 is characterized in that, described core bar and described overcoat are matched in clearance.
8. disposable use retraction safe injection needle as claimed in claim 1 is characterized in that, the bottom of described sheath and described core bar is interference fit.
9. disposable use retraction safe injection needle as claimed in claim 1, it is characterized in that, the upper end of described draw-in groove is provided with a core bar screens, and the inwall upper end of described overcoat is provided with an overcoat screens, and described core bar screens withholds when contacting with described overcoat screens mutually.
10. disposable use retraction safe injection needle as claimed in claim 1 is characterized in that, described core bar is formed by connecting by two rod members, passes through a vertebra head interference fit between the described rod member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250969 CN202637620U (en) | 2012-05-30 | 2012-05-30 | Disposable retracted safety injection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250969 CN202637620U (en) | 2012-05-30 | 2012-05-30 | Disposable retracted safety injection needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202637620U true CN202637620U (en) | 2013-01-02 |
Family
ID=47406807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220250969 Expired - Lifetime CN202637620U (en) | 2012-05-30 | 2012-05-30 | Disposable retracted safety injection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202637620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976748A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Safety blood taking needle |
-
2012
- 2012-05-30 CN CN 201220250969 patent/CN202637620U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976748A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Safety blood taking needle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102525488B (en) | Disposable sterile retraction safety blood sampling needle | |
| CN201453787U (en) | Disposable needle tip automatic retraction safe syringe | |
| CN202637620U (en) | Disposable retracted safety injection needle | |
| CN101690833A (en) | Safety injector with automatically retractable needle | |
| CN2817873Y (en) | Safety and self-destructive disposable syringe of steel needle springback | |
| CN202699769U (en) | Disposable retraction safety injection needle | |
| CN102698339A (en) | Disposable injection needle capable of being safely retracted | |
| CN203169724U (en) | Disposable safe indwelling needle | |
| CN101143237A (en) | Steel needle retractable safety self-destructing syringe | |
| CN102648994A (en) | Disposable retractive safe injection needle | |
| CN202636954U (en) | Disposable retractable safety lancet | |
| CN102697512A (en) | Disposable safely-retracting blood taking needle | |
| CN202636953U (en) | Disposable retraction safety blood taking needle | |
| CN200973886Y (en) | Syringe | |
| CN201020108Y (en) | Steel needle retraction type safety self-destructing injector | |
| CN202724383U (en) | Disposable safe self-destroying type injection device | |
| CN202699154U (en) | Disposable rebound-safe blood collection bag | |
| CN102648849A (en) | Disposable retractive safe blood taking needle | |
| CN101480511A (en) | Disposable safety syringe with syringe needle capable of automatically retracting | |
| CN201067564Y (en) | Steel needle retraction type safety self-destructing syringe | |
| CN204709541U (en) | A kind of entry needle with protective sleeve | |
| CN201020124Y (en) | Steel needle retraction type safety self-destructing injector | |
| CN202699773U (en) | Safety syringe | |
| CN102836485A (en) | Self-destructive injector | |
| CN2782119Y (en) | Safety self-destroying disposable syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |