CN202538074U - Self-destroying type filter syringe - Google Patents
Self-destroying type filter syringe Download PDFInfo
- Publication number
- CN202538074U CN202538074U CN2012200182627U CN201220018262U CN202538074U CN 202538074 U CN202538074 U CN 202538074U CN 2012200182627 U CN2012200182627 U CN 2012200182627U CN 201220018262 U CN201220018262 U CN 201220018262U CN 202538074 U CN202538074 U CN 202538074U
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- Prior art keywords
- syringe
- push rod
- liquid outlet
- annular boss
- filter membrane
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Abstract
The utility model relates to the technical field of syringes, in particular to a self-destroying type filter syringe. The self-destroying type filter syringe comprises a needle cylinder, a push rod and a piston. A liquid outlet is disposed at the front end of the needle cylinder. The push rod is disposed in an inner cavity of the needle cylinder and connected with the needle cylinder in sliding mode. The piston is connected with the front end of the push rod in sleeved mode. A sleeve block is disposed at the front end of the push rod and matched with the piston in embedded and sleeved mode. The piston is provided with a through hole. The sleeve block is connected with a clamping position device which can penetrate through the through hole. The syringe further comprises a filter membrane and an annular boss for limiting the clamping position device. The filter membrane is arranged inside the needle cylinder. The clamping position device can pierce the filter membrane and is invertedly buckled on the annular boss. The self-destroying type filter syringe is easy to dismount and convenient to sort and recycle, and can effectively filter glass fragments, rubber plug impurities and plastic particles.
Description
Technical field
This utility model relates to the injector technology field, relates in particular to a kind of type self-destroyed filtration syringe.
Background technology
At present, cause viral cross infection for fear of reusing syringe, people have developed self-destruction syringe, and its primary structure is to destroy air-tightness or locked or fracture and destroy etc., syringe can be damaged after use and can not reuse.
The patent No. is 00130293.0 Chinese invention patent, discloses a kind of safe syringe that is easy to the push rod dismounting, and it comprises syringe needle group, injection tube, push rod group and piston seat; The syringe needle group comprises the needle stand snap fastener, and the front end of piston seat is provided with a piston snap fastener, after the push rod group is pushed the syringe needle group to; The piston seat snap fastener can engage with the needle stand snap fastener, makes the push rod group combine with the syringe needle group, and after the push rod group outwards pulls out; Push rod is detachably breaking away from piston seat, and makes syringe needle group and piston seat still stay in injection tube, and push rod can break away from injection tube; Reach the purpose of self-destruction, avoid flowing into that society is used again and the hidden danger that causes cross infection.
Yet; Syringe needle group and piston seat still stay the inside in injection tube after this invention self-destruction, be unfavorable for the classification recycling, and the inner chamber of injection tube also are provided with annular relief; Make user just to have way to be drawn out outside the injection tube the push rod group is whole with bigger strength; And the formed plane of annular relief and the axis and the out of plumb of injection tube, therefore when user pulled to the rear end of injection tube with the push rod group, push rod can tilt; Thereby produce a side force, add that piston seat tilts to cause the push rod group more to be difficult to break away from injection tube.Further, this invention is not provided with defecator, so during the medicine of this invention in extracting ampoule bottle; Be difficult to prevent fully the entering of glass chip; When the puncture seal bottle, be difficult to prevent fully the entering of rubber stopper impurity in addition, and in the production process of syringe, can produce the micro plastics microparticle residue in injection tube; Glass chip, rubber stopper impurity and plastic particles all cause the possibility of particle contamination, to patient's the certain influence of treatment safety generation.
The utility model content
The purpose of this utility model is the deficiency to prior art, provide the recycling that is easy to dismantle, is convenient to classify, can effectively filtering glass chip, the type self-destroyed filtration syringe of rubber stopper impurity and plastic particles.
This utility model is realized through following technology.
A kind of type self-destroyed filtration syringe comprises syringe, push rod and piston, and the front end of said syringe is provided with liquid outlet; Said push rod is arranged at the inner chamber of said syringe and is slidingly connected with said syringe; Said piston bush is connected to the front end of said push rod, and the front end of said push rod is provided with said piston and cooperates nested cover piece, and said piston offers through hole; Said cover piece is connected with the positioner that can pass said through hole; Said syringe also comprises filter membrane and the annular boss spacing to said positioner, and said filter membrane is arranged at the inside of said syringe, and said positioner can pierce through said filter membrane and back-off in said annular boss.
Wherein, said annular boss and said liquid outlet are one-body molded, and said filter membrane is arranged at the bottom of said syringe, and are positioned at the rear of said annular boss.
Wherein, said positioner comprises T stage and taper flexible glue body, and said T stage and said cover piece are one-body molded, and said taper flexible glue body is socketed on said T stage.
Wherein, said cover piece comprises inserted block and abaculus, and said inserted block is provided with inserted link, and said abaculus offers groove, and said inserted block is plugged in said abaculus.
Wherein, said positioner comprises a disk, and said disk is symmetrically arranged with at least two barbs.
Wherein, said disk is connected with inserted link, and said cover piece is a spherosome, and said spherosome offers groove, and said groove cooperates with said inserted link.
Wherein, said annular boss is connected in said liquid outlet, and said filter membrane is arranged at the junction of said annular boss and said liquid outlet.
Wherein, said liquid outlet is arranged at the eccentric position of the front end of said syringe, and the inwall of said syringe is provided with the guide rail that points to said liquid outlet, and said guide rail and said pusher slide are dynamically connected.
The beneficial effect of this utility model is: a kind of type self-destroyed filtration syringe; Comprise syringe, push rod and piston; The front end of said syringe is provided with liquid outlet, and said push rod is arranged at the inner chamber of said syringe and is slidingly connected with said syringe, and said piston bush is connected to the front end of said push rod; The front end of said push rod is provided with and cooperates nested cover piece with said piston; Said piston offers through hole, and said cover piece is connected with the positioner that can pass said through hole, and said syringe also comprises filter membrane and the annular boss spacing to said positioner; Said filter membrane is arranged at the inside of said syringe, and said positioner can pierce through said filter membrane and back-off in said annular boss.When this utility model used, filter membrane can avoid glass chip and rubber stopper impurity to get into syringe, the while its can filter in the production process plastic particles remaining in the syringe, thereby can avoid particle contamination, guarantee the safety of patient treatment; User is after injection finishes simultaneously; The inside that positioner punctures filter membrane and extends to liquid outlet blocks liquid outlet, and positioner and stopping means fastened when push rod was back spurred, and this moment, the positioner card was limited to the inside of liquid outlet; The application of force can make the push rod separation separate with positioner again; This moment, push rod was easy to pull out the outside of syringe, was easy to dismounting, and can realize that self-destruction is beneficial to classification simultaneously and recycles.
Description of drawings
Fig. 1 is the structural representation of this utility model.
Fig. 2 is the longitudinal sectional view of the embodiment 1 of this utility model.
Fig. 3 is the longitudinal sectional view of the embodiment 2 of this utility model.
Fig. 4 is the longitudinal sectional view of the embodiment 3 of this utility model.
Fig. 5 is the longitudinal sectional view of the embodiment 4 of this utility model.
Fig. 6 is the longitudinal sectional view of the embodiment 5 of this utility model.
Fig. 7 is the transverse sectional view of the embodiment 5 of this utility model.
The Reference numeral of Fig. 1 to Fig. 9 comprises: 1-syringe, 2-push rod, 3-piston, 4-liquid outlet, 5-cover piece, 6-positioner, 61-disk, 62-barb, 7-filter membrane, 8-annular boss, 9-guide rail.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is further described.
embodiment 1.
Like Fig. 1, shown in Figure 2; A kind of type self-destroyed filtration syringe of present embodiment comprises syringe 1, push rod 2 and piston 3, and the front end of said syringe 1 is provided with liquid outlet 4; Said push rod 2 is arranged at the inner chamber of said syringe 1 and is slidingly connected with said syringe 1; Said piston 3 is socketed on the front end of said push rod 2, and the front end of said push rod 2 is provided with said piston 3 and cooperates nested cover piece 5, and said piston 3 offers through hole; Said cover piece 5 is connected with the positioner 6 that can pass said through hole; Said syringe also comprises filter membrane 7 and the annular boss 8 spacing to said positioner 6, and said filter membrane 7 is arranged at the inside of said syringe 1, and said positioner 6 can pierce through said filter membrane 7 and back-off in said annular boss 8.When this utility model used, filter membrane 7 can avoid glass chip and rubber stopper impurity to get into syringe 1, the while its can filter in the production process plastic particles remaining in the syringe 1, thereby can avoid particle contamination, guarantee the safety of patient treatment; User is after injection finishes simultaneously; The inside that positioner 6 punctures filter membrane 7 and extends to liquid outlet 4 blocks liquid outlet 4, and positioner 6 fastened with annular boss 8 when push rod 2 was back spurred, and this moment, positioner 6 cards were limited to the inside of liquid outlet 4; The application of force can make push rod 2 separate with positioner 6 again; This moment, push rod 2 was easy to pull out the outside of syringe 1, was easy to dismounting, and can realize that self-destruction is beneficial to classification simultaneously and recycles.
In the present embodiment, said annular boss 8 and said liquid outlet 4 are one-body molded, and said filter membrane 7 is arranged at the bottom of said syringe 1, and is positioned at the rear of said annular boss 8.This utility model is when extracting medicinal liquid; Filter membrane 7 can be trapped in the impurity in the medicinal liquid in the syringe needle; Elder generation discharges the related medicinal liquid of the impurity in the syringe needle toward extrapolation discharge section medicinal liquid together when injection, and this moment is again toward the interior liquid medicine injection of human body; Filter membrane 7 also can filter out the plastic particles in the syringe 1 in the liquid medicine injection process; Can avoid sneaking into the harmful effect that impurity brings to human body because of liquid medicine injection, the external diameter of annular boss 8 is greater than the external diameter of liquid outlet 4, and the internal diameter of annular boss 8 is less than the internal diameter of liquid outlet 4; Can make positioner 6 be limited to annular boss 8 and can not pull back, so syringe is just blocked and can not re-use by positioner 6 once its liquid outlet 4 of use by card.
In the present embodiment, said positioner 6 comprises T stage and taper flexible glue body, and said T stage and said cover piece 5 are one-body molded, and said taper flexible glue body is socketed on said T stage.Taper flexible glue and T stage are assembled into one, and T stage is the hard plastic, pass filter membrane 7 and extend to the inside of liquid outlet 4 and liquid outlet 4 is blocked so positioner 6 is prone to the top; Taper flexible glue surface is comparatively smooth; The bullet degeneration is good, and it more helps positioner 6 and passes internal diameter annular boss less than normal 8, and the air-tightness of the flexible glue of taper simultaneously is better; But tightening seal was blocked liquid outlet 4 after positioner 6 passed annular boss 8; When user back spurred push rod 2, positioner 6 was because the T stage back-off is limited in the liquid outlet 4 by card in annular boss 8, so syringe promptly can damage after using and can not be repeated to use again.The soft colloidal bottom surface of taper is slightly larger than the internal diameter of annular boss 8, and taper flexible glue body generation elastic deformation can be passed annular boss 8, and when back falling back the soft colloidal bottom surface of taper back-off in said annular boss 8.
In the present embodiment, said cover piece 5 comprises inserted block and abaculus, and said inserted block is provided with inserted link, and said abaculus offers groove, and said inserted block is plugged in said abaculus.Inserted block and abaculus are two measure-alike hemispheres, and inserted block and abaculus inserting are a spherosome, and the spherosome smooth surface is beneficial to socket piston 3.Further, the inserting through inserted link and groove of inserted block and abaculus is for removably connecting, and abaculus and T stage are one-body molded; Inserted block and push rod 2 are one-body molded, and when user promotion push rod 2 liquid medicine injections finished, positioner 6 tops of push rod 2 front ends were passed filter membrane 7 and extended in the liquid outlet 4; When back spurring push rod 2 again, positioner 6 is limited in the liquid outlet 4 by annular boss 8 card, and user was executed big slightly pulling force again inserted block was separated with abaculus this moment; Thereby push rod 2 can separate with positioner 6; This moment, push rod 2 split out in syringe 1 than easy, realized self-destruction, avoided syringe to be repeated to use the problem that causes cross infection.
As shown in Figure 3, the difference of present embodiment and embodiment 1 is: said inserted block of present embodiment and abaculus are two hemispheres that size is inequality, and abaculus is a large-sized hemisphere; Inserted block is a undersized hemisphere, and abaculus and inserted block are assembled into an approximate circle spheroid, and wherein abaculus and push rod 2 are one-body molded; Inserted block and T stage are one-body molded, are the below with the position of push rod 2, and abaculus is arranged at the below of inserted block; Because the size of abaculus is bigger; Therefore piston 3 major parts that are socketed on the piece 5 are close to abaculus, so structure is beneficial to inserted block when separating with abaculus, piston 3 is easy to be drawn out outside the syringe 1 together with push rod 2; The hard plastic that piston 3 is different from syringe 1 is a software rubber, it is separated being more conducive to the materials classification recovery with syringe 1.
Other structure of present embodiment is identical with embodiment 1, repeats no more at this.
As shown in Figure 4; The difference of present embodiment and embodiment 1 is: the said positioner 6 of present embodiment comprises a disk 61, and said disk 61 is symmetrically arranged with at least two barbs 62, and said disk 61 is connected with inserted link; Said cover piece 5 is a spherosome; Said spherosome offers groove, and said inserted link and said groove fit, this structure are easy to realize push rod 2 and the purpose that reaches self-destruction separating of positioner 6 equally.But barb 62 back-offs play the effect of screens in annular boss 8, and it can be other structures, as long as play the effect of screens.
In the present embodiment, said annular boss 8 is connected in said liquid outlet 4, and said filter membrane 7 is arranged at the junction of said annular boss 8 and said liquid outlet 4; Liquid outlet 4 is plugged in annular boss 8, and filter membrane 7 is crimped between liquid outlet 4 and the annular boss 8, need be through the fixing filter membrane 7 of hot pressed mode; This kind structure is applicable to the filter membrane 7 of non-refractory; The scope of application is wider, and the area of the filter membrane 7 that needs is littler, more can practice thrift cost.
Other structure of present embodiment is identical with embodiment 1, repeats no more at this.
As shown in Figure 5; The difference of present embodiment and embodiment 3 is: the connected mode of said liquid outlet 4 of present embodiment and said annular boss 8 is for being spirally connected, and this connected mode is more conducive to the secondary assembling of filter membrane 7 in the production process, is convenient to assemble dissimilar filter membrane 7; Like fibrous membrane, ionic membrane and atomic film etc.; Or the filter membrane 7 of other specific demands, liquid outlet 4 is tightened in annular boss 8, and it is tightr, firm that liquid outlet 4 is connected with annular boss 8; And can make filter membrane 7 be clamped in wherein better location, guarantee its normal filtration.
Other structure of present embodiment is identical with embodiment 3, repeats no more at this.
Like Fig. 6, shown in 7; The difference of present embodiment and embodiment 2 is: the said liquid outlet 4 of present embodiment is arranged at the eccentric position of the front end of said syringe 1; The inwall of said syringe 1 is provided with the guide rail 9 that points to said liquid outlet 4, and said guide rail 9 is slidingly connected with said push rod 2.The syringe that different big ting models are arranged in the medical instruments field; In the syringe of large-size; Liquid outlet 4 can be arranged at the eccentric position of the front end of said syringe 1, and the guide rail 9 that the inwall of syringe 1 is set up can guide push rod 2 orientations to be pushed into the bottom of syringe 1, and anti-throw-out lever 2 squints in the process that promotes; The positioner 6 of guaranteeing push rod 2 front ends can aim at liquid outlet 4 so that its propelling movement in the liquid outlet 4 smoothly, and then reaches the purpose of self-destruction.
Other structure of present embodiment is identical with embodiment 2, repeats no more at this.
The above embodiment; It is the preferred embodiments of this utility model; Be not to limit this utility model practical range; So all equivalences of doing according to the described structure of this utility model claim, characteristic and principle change or modify, and all should comprise in this utility model patent claim.
Claims (8)
1. a type self-destroyed filtration syringe comprises syringe, push rod and piston, and the front end of said syringe is provided with liquid outlet; Said push rod is arranged at the inner chamber of said syringe and is slidingly connected with said syringe; Said piston bush is connected to the front end of said push rod, it is characterized in that: the front end of said push rod is provided with said piston and cooperates nested cover piece, and said piston offers through hole; Said cover piece is connected with the positioner that can pass said through hole; Said syringe also comprises filter membrane and the annular boss spacing to said positioner, and said filter membrane is arranged at the inside of said syringe, and said positioner can pierce through said filter membrane and back-off in said annular boss.
2. a kind of type self-destroyed filtration syringe according to claim 1 is characterized in that: said annular boss and said liquid outlet are one-body molded, and said filter membrane is arranged at the bottom of said syringe, and are positioned at the rear of said annular boss.
3. a kind of type self-destroyed filtration syringe according to claim 1 is characterized in that: said positioner comprises T stage and taper flexible glue body, and said T stage and said cover piece are one-body molded, and said taper flexible glue body is socketed on said T stage.
4. a kind of type self-destroyed filtration syringe according to claim 3 is characterized in that: said cover piece comprises inserted block and abaculus, and said inserted block is provided with inserted link, and said abaculus offers groove, and said inserted block is plugged in said abaculus.
5. a kind of type self-destroyed filtration syringe according to claim 1, it is characterized in that: said positioner comprises a disk, said disk is symmetrically arranged with at least two barbs.
6. a kind of type self-destroyed filtration syringe according to claim 5, it is characterized in that: said disk is connected with inserted link, and said cover piece is a spherosome, and said spherosome offers groove, and said groove cooperates with said inserted link.
7. a kind of type self-destroyed filtration syringe according to claim 1, it is characterized in that: said annular boss is connected in said liquid outlet, and said filter membrane is arranged at the junction of said annular boss and said liquid outlet.
8. a kind of type self-destroyed filtration syringe according to claim 2; It is characterized in that: said liquid outlet is arranged at the eccentric position of the front end of said syringe; The inwall of said syringe is provided with the guide rail that points to said liquid outlet, and said guide rail and said pusher slide are dynamically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200182627U CN202538074U (en) | 2012-01-16 | 2012-01-16 | Self-destroying type filter syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200182627U CN202538074U (en) | 2012-01-16 | 2012-01-16 | Self-destroying type filter syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202538074U true CN202538074U (en) | 2012-11-21 |
Family
ID=47158772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200182627U Expired - Fee Related CN202538074U (en) | 2012-01-16 | 2012-01-16 | Self-destroying type filter syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202538074U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103127589A (en) * | 2013-03-26 | 2013-06-05 | 魏颖德 | Safety self-destruction syringe |
| CN104436381A (en) * | 2014-10-22 | 2015-03-25 | 浙江理工大学 | Self-destroying type syringe |
| CN107635600A (en) * | 2015-05-20 | 2018-01-26 | 象牙弗隆泰克株式会社 | Syringe filter construction and the syringe for including it |
| WO2020051782A1 (en) * | 2018-09-12 | 2020-03-19 | 苏宣维 | Self-destruction injection safety needle |
-
2012
- 2012-01-16 CN CN2012200182627U patent/CN202538074U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104436381A (en) * | 2014-10-22 | 2015-03-25 | 浙江理工大学 | Self-destroying type syringe |
| CN107635600A (en) * | 2015-05-20 | 2018-01-26 | 象牙弗隆泰克株式会社 | Syringe filter construction and the syringe for including it |
| WO2020051782A1 (en) * | 2018-09-12 | 2020-03-19 | 苏宣维 | Self-destruction injection safety needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20180116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |