CN2759493Y - Single-use safety syringe - Google Patents
Single-use safety syringe Download PDFInfo
- Publication number
- CN2759493Y CN2759493Y CN 200520109874 CN200520109874U CN2759493Y CN 2759493 Y CN2759493 Y CN 2759493Y CN 200520109874 CN200520109874 CN 200520109874 CN 200520109874 U CN200520109874 U CN 200520109874U CN 2759493 Y CN2759493 Y CN 2759493Y
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- CN
- China
- Prior art keywords
- syringe
- needle
- needle holder
- utilization
- push rod
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- Expired - Fee Related
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Abstract
The utility model relates to a disposable safety syringe which comprises a needle cylinder, a push rod of which the front end of is provided with a piston, a needle head seat and a needle head, wherein the needle head seat is arranged on the internal side of the front end of the needle cylinder and is hermetically connected with the internal side of the needle cylinder, the needle head seat is provided with a through hole which is penetrated from front to back, the needle head is sheathed on the front end of the needle head seat by a sleeve handle of the needle head and the internal side of the front end of the needle cylinder is also provided with a stop part which prevents the needle head from being drawing out from the front end and stops the sleeve handle of the needle head. The syringe also comprises a locking mechanism which can pull the needle head seat in the needle cylinder, the locking mechanism comprises a first locking unit arranged at the back end part of the needle head seat and a second locking unit which can be locked with the first locking unit and is arranged at the front end part of the push rod, wherein the first locking unit is mutually locked with the second locking unit, and the needle head seat together with the needle head are pulled in the needle cylinder by backwards pulling the push rod so that the syringes achieves the goals of self destruction, the syringe is prevented from being repeatedly used, the needle head recovered by a lawbreaker is repeatedly used after treatment is prevented and the syringe is really safely used.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of disposable syringe safe in utilization.
Background technology
Syringe is a kind of medical apparatus and instruments commonly used, and in order to prevent cross infection, the disposable use of syringe more and more is subject to people's attention.But existing disposable syringe himself does not have destructive protection structure, makes that syringe is not disposable on serviceability, can use repeatedly, causes cross infection easily, causes transmission of disease; Disposable sterilized syringe particularly, its use and subsequently processing procedure in, syringe needle is exposed mostly very easily stabs or scratches the medical worker outside, causes cross infection; Moreover, some lawless persons are driven by interests in the society, might reclaim used syringe, repeated use comes into the market after handling again, or will reuse behind the used syringe replacing injection needle, make syringe not accomplish " device one pin ", may bring great potential safety hazard to society like this.
Summary of the invention
The purpose of this utility model is to provide a kind of disposable syringe safe in utilization, it uses once back needle holder and push rod front end promptly to form self-locking, and can be with needle holder and needle retractable to syringe inside, injection needle can't be changed, the disposable use of real realization, and guarantee that hospitalized patients is not infected in its use and the processing procedure subsequently.
The purpose of this utility model is to realize like this, a kind of disposable syringe safe in utilization, comprise syringe, front end is provided with the push rod of piston, needle holder and syringe needle, needle holder is located at syringe front end inboard and is connected with the syringe inner seal, the through hole that connects before and after needle holder is provided with, syringe needle is sheathed on the needle holder front end by needle hub, syringe front end inboard also is provided with and prevents that syringe needle from being extracted and the stopper section of backstop needle hub by front end, described syringe comprises that also one can draw in needle holder the locking mechanism in the syringe, and this locking mechanism comprises the first sealed unit of being located at the needle holder rearward end and can be with the first sealed unit sealed and be located at the second sealed unit of push rod leading section.
The described first sealed unit is made of the edge clipping of being located at needle holder through-hole wall rear end; The second sealed unit is made of the Access Division of being located at the push rod front end and can be arranged in described edge clipping.
Described Access Division is asymmetric elastic plug of umbrella shape or umbrella shape back-off.
Described needle holder front end be made as can with the conehead of needle hub fit.
Described conehead is to have the conehead of annular protrusion or is Rule conehead of 6:100 for tapering.
Described needle holder is arranged in syringe front end inboard, is provided with O-ring seal between needle holder and syringe.
Described syringe inboard is provided with one and prevents that the groove of sliding after the needle holder and from preventing the spacing preiection of sliding behind the O-ring seal, and the needle holder outside is provided with can the corresponding annular protrusion that embeds described groove.
Described stopper section is an overhead structure.
Be provided with a baffle plate with piston space before the described push rod, the push rod at baffle plate rear portion is provided with the weak area that is easy to fracture; The back end of syringe inwall is provided with anti-throw-out lever and extracts out and the spacing Crossed Circle projection of the described baffle plate of backstop.
But described putting back-end is provided with a backstop in back end of syringe and dismountable positive stop.
Disposable syringe safe in utilization of the present utility model, after assembling, the toggle of syringe needle is promptly spacing by the stopper section of syringe front end, makes syringe needle can't extract replacing, thereby guarantees " device one pin " and relieved use; Syringe of the present utility model, described first and second sealed unit can be mutually locked after use, and by pulling back push rod, draw in needle holder and syringe needle in the syringe together, make this syringe reach self-destruction, can prevent the repeated use of this syringe, and can prevent that the lawless person from reclaiming syringe needle and handling the back repeated use, reach syringe purpose safe in utilization really.
Description of drawings
Fig. 1: be structural representation of the present utility model.
Fig. 2, Fig. 3: be the structural representation of this utility model needle holder.
Fig. 4: be the structural representation after this utility model use.
Fig. 5: the structural representation of pulling down positive stop for this utility model.
The specific embodiment
As shown in Figure 1, a kind of disposable syringe safe in utilization, comprise syringe 7, front end is provided with the push rod 6 of piston 5, needle holder 3 and syringe needle 1, needle holder 3 is located at syringe 7 front ends inboard and is connected with syringe 7 inner seals, the through hole that connects before and after needle holder 3 is provided with, syringe needle 1 is sheathed on needle holder 3 front ends by needle hub 2, syringe 7 front end inboards also are provided with and prevent that syringe needle 1 from being extracted and the stopper section 10 of backstop needle hub 2 by front end, described syringe comprises that also one can draw in needle holder 3 locking mechanism in the syringe 7, and this locking mechanism comprises the first sealed unit of being located at needle holder 3 rearward end and can be with the first sealed unit sealed and be located at the second sealed unit of push rod 6 leading sections.
Disposable syringe safe in utilization of the present utility model, after assembling, the toggle 2 of syringe needle 1 is promptly spacing by the stopper section 10 of syringe 7 front ends, makes syringe needle 1 can't extract replacing, thereby guarantees " device one pin " and relieved use; In the present embodiment, be safer and health, also can be covered with a syringe needle body 9 in syringe needle 1 outside.Syringe of the present utility model, described first and second sealed unit can be mutually locked after use, and by pulling back push rod 6, needle holder 3 and syringe needle 1 are drawn in the syringe 7 together, make this syringe reach self-destruction, can prevent the repeated use of this syringe, and can prevent that the lawless person from reclaiming syringe needle and handling the back repeated use, reach syringe purpose safe in utilization really.
As shown in Figure 1, 2, 3, in the present embodiment, the described first sealed unit is made of the edge clipping 32 of being located at needle holder 3 through-hole wall rear ends; The second sealed unit is made of the Access Division 62 of being located at push rod 6 front ends and can be arranged in described edge clipping 32.
Further, as shown in the figure, described Access Division 62 can be asymmetric elastic plug of umbrella shape or umbrella shape back-off; Adopt the asymmetric elastic plug of umbrella shape in the present embodiment, can reduce, thereby reduce the pain of patient when injecting when push rod 6 propelling resistance during near needle holder 3.
Shown in Fig. 2,3, described needle holder 3 front ends be made as can with the conehead 33 of needle hub 2 fits.Further, described conehead 33 is for having the conehead of annular protrusion or being Rule conehead of 6:100 for tapering.
Shown in Fig. 1,4, described needle holder 3 is arranged in syringe 7 front end inboards, and 7 of needle holder 3 and syringes are provided with O-ring seal 4.Example is provided with one and prevents that the sliding groove 11 and in needle holder 3 backs from preventing the sliding spacing preiection (not shown) in O-ring seal 4 backs in the described syringe 7, and needle holder 3 outsides are provided with can the corresponding annular protrusion 31 (shown in Fig. 2,3) that embeds described groove 11.
In the present embodiment, the internal diameter of described stopper section 10 is less than the diameter of needle hub 2, and further described stopper section 10 can be an overhead structure.
Shown in Fig. 1,4, in the present embodiment, before the described push rod 6 and 5 in piston be provided with a baffle plate, the push rod 6 at baffle plate rear portion is provided with the weak area 61 that is easy to fracture; Syringe 7 rear end inwalls are provided with anti-throw-out lever 6 and extract out and the spacing Crossed Circle projection 12 of the described baffle plate of backstop.
For preventing disposable syringe safe in utilization of the present utility model maloperation before use, guarantee that syringe is intact before using, as shown in the figure, press the hands front portion in described push rod 6 rear ends, but be provided with a backstop in syringe 7 rear ends, dismountable positive stop 8 during use; Syringe is before using, and positive stop 8 is located at the rear end of push rod 6, during use positive stop 8 is pulled down, so that push rod 6 can be shifted syringe 7 bottoms onto, makes the Access Division 62 of push rod 6 front ends embed the edge clipping 32 of needle holder 3 rear ends and sealed.
Disposable syringe safe in utilization of the present utility model in use, medicinal liquid is sucked in the syringe 7, then positive stop 8 is removed from push rod 6 and (also can be pulled down positive stop 8 earlier and inhale medicinal liquid again, as shown in Figure 5), promote push rod 6 forward, piston 5 coincide with syringe 7 inwalls and slides along inwall, thereby advance medicinal liquid to inject, at this moment, because the annular protrusion 31 in needle holder 3 outsides embeds in the groove 11 that is arranged on the syringe 7, needle holder 3 slides backward in the time of can preventing to inject; When the edge clipping 32 of 62 embedding needle holder, 3 rear ends, the Access Division of push rod 6 front ends is also sealed, injection finishes, extract syringe and pull back push rod 6 from patient body this moment, effect by locking mechanism, in the time of pulling push rod 6, the groove 11 that annular protrusion 31 on the needle holder 3 is broken away from the syringe 7 is drawn in needle holder 3 in the syringe 7 together with syringe needle 1; When pulling back push rod 6, because the effect of spacing dicyclo projection 12 limited baffle plate and can not extract syringe 7 out, push rod is fractureed or break from the weak area 62 of push rod 6 again, it can't be slided in syringe 7, realize the self-destruction of this syringe.In the present embodiment, the sealing when aspiration medicinal liquid and injection of described O-ring seal 4, after injection finishes, in the time of in needle holder 3 is drawn into syringe 7, described O-ring seal 4 separates dislocation or breaks away from displacement with needle holder 3, certainly, O-ring seal 4 also can be offed normal with needle holder 3, and then this syringe can't be reused.
Thus, disposable syringe safe in utilization of the present utility model can guarantee to use once back needle holder and push rod front end promptly to form self-locking, by pulling back push rod, needle holder and syringe needle is drawn in syringe inside, and injection needle can't be changed; Also push rod can be fractureed, it can't be slided in syringe, and the sealing device of syringe can be destroyed after once using, thereby really realize disposable use, and guarantee that hospitalized patients is not infected in its use and the processing procedure subsequently.Simultaneously, disposable syringe safe in utilization of the present utility model, simple in structure, be easy to the assembling, can with standard injection pin interworking, the existing producer that produces disposable syringe only needs change slightly on mould, increase the needle holder mould, can produce, help promoting the use of of this product.
Claims (10)
1. disposable syringe safe in utilization, comprise syringe, front end is provided with the push rod of piston, needle holder and syringe needle, it is characterized in that: needle holder is located at syringe front end inboard and is connected with the syringe inner seal, the through hole that connects before and after needle holder is provided with, syringe needle is sheathed on the needle holder front end by needle hub, syringe front end inboard also is provided with and prevents that syringe needle from being extracted and the stopper section of backstop needle hub by front end, described syringe comprises that also one can draw in needle holder the locking mechanism in the syringe, and this locking mechanism comprises the first sealed unit of being located at the needle holder rearward end and can be with the first sealed unit sealed and be located at the second sealed unit of push rod leading section.
2. disposable syringe safe in utilization as claimed in claim 1 is characterized in that: the described first sealed unit is made of the edge clipping of being located at needle holder through-hole wall rear end; The second sealed unit is made of the Access Division of being located at the push rod front end and can be arranged in described edge clipping.
3. disposable syringe safe in utilization as claimed in claim 2 is characterized in that: described Access Division is asymmetric elastic plug of umbrella shape or umbrella shape back-off.
4. disposable syringe safe in utilization as claimed in claim 1 is characterized in that: described needle holder front end be made as can with the conehead of needle hub fit.
5. disposable syringe safe in utilization as claimed in claim 4 is characterized in that: described conehead is to have the conehead of annular protrusion or is Rule conehead of 6: 100 for tapering.
6. as claim 1 or 4 described disposable syringes safe in utilization, it is characterized in that: described needle holder is arranged in syringe front end inboard, is provided with O-ring seal between needle holder and syringe.
7. disposable syringe safe in utilization as claimed in claim 6, it is characterized in that: described syringe inboard is provided with one and prevents that the groove of sliding after the needle holder and from preventing the spacing preiection of sliding behind the O-ring seal, and the needle holder outside is provided with can the corresponding annular protrusion that embeds described groove.
8. disposable syringe safe in utilization as claimed in claim 1 is characterized in that: described stopper section is an overhead structure.
9. disposable syringe safe in utilization as claimed in claim 1 is characterized in that: be provided with a baffle plate with piston space before the described push rod, the push rod at baffle plate rear portion is provided with the weak area that is easy to fracture; The back end of syringe inwall is provided with anti-throw-out lever and extracts out and the spacing Crossed Circle projection of the described baffle plate of backstop.
10. disposable syringe safe in utilization as claimed in claim 1 is characterized in that: but described putting back-end is provided with a backstop in back end of syringe and dismountable positive stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109874 CN2759493Y (en) | 2004-07-28 | 2005-06-10 | Single-use safety syringe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420084926 | 2004-07-28 | ||
| CN200420084926.5 | 2004-07-28 | ||
| CN 200520109874 CN2759493Y (en) | 2004-07-28 | 2005-06-10 | Single-use safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2759493Y true CN2759493Y (en) | 2006-02-22 |
Family
ID=36081696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520109874 Expired - Fee Related CN2759493Y (en) | 2004-07-28 | 2005-06-10 | Single-use safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2759493Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335469A (en) * | 2011-07-09 | 2012-02-01 | 李林风 | Catheter flusher for priming solution |
| CN102698341A (en) * | 2011-09-13 | 2012-10-03 | 张焕娥 | Transfusion needle applicable to butt joint with punctured-type connection piece of retention device |
| CN103127589A (en) * | 2013-03-26 | 2013-06-05 | 魏颖德 | Safety self-destruction syringe |
| CN105079941A (en) * | 2015-08-21 | 2015-11-25 | 广东百合医疗科技股份有限公司 | Hemodialysis catheter flushing method and flushing device thereof |
| CN107497017A (en) * | 2017-09-25 | 2017-12-22 | 南京律智诚专利技术开发有限公司 | A kind of disposable injection device with vacuum cavity |
| CN107569747A (en) * | 2017-09-25 | 2018-01-12 | 南京律智诚专利技术开发有限公司 | A kind of disposable injection device |
-
2005
- 2005-06-10 CN CN 200520109874 patent/CN2759493Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335469A (en) * | 2011-07-09 | 2012-02-01 | 李林风 | Catheter flusher for priming solution |
| CN102698341A (en) * | 2011-09-13 | 2012-10-03 | 张焕娥 | Transfusion needle applicable to butt joint with punctured-type connection piece of retention device |
| CN102698341B (en) * | 2011-09-13 | 2013-11-06 | 张焕娥 | Transfusion needle applicable to butt joint with punctured-type connection piece of retention device |
| CN103127589A (en) * | 2013-03-26 | 2013-06-05 | 魏颖德 | Safety self-destruction syringe |
| CN103127589B (en) * | 2013-03-26 | 2015-04-29 | 魏颖德 | Safety self-destruction syringe |
| CN105079941A (en) * | 2015-08-21 | 2015-11-25 | 广东百合医疗科技股份有限公司 | Hemodialysis catheter flushing method and flushing device thereof |
| CN107497017A (en) * | 2017-09-25 | 2017-12-22 | 南京律智诚专利技术开发有限公司 | A kind of disposable injection device with vacuum cavity |
| CN107569747A (en) * | 2017-09-25 | 2018-01-12 | 南京律智诚专利技术开发有限公司 | A kind of disposable injection device |
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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: 20060222 |