CN1724085A - Hidden type haulback safety syringe - Google Patents
Hidden type haulback safety syringe Download PDFInfo
- Publication number
- CN1724085A CN1724085A CN 200510066537 CN200510066537A CN1724085A CN 1724085 A CN1724085 A CN 1724085A CN 200510066537 CN200510066537 CN 200510066537 CN 200510066537 A CN200510066537 A CN 200510066537A CN 1724085 A CN1724085 A CN 1724085A
- Authority
- CN
- China
- Prior art keywords
- syringe needle
- push rod
- holding block
- hidden type
- clamping hole
- 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.)
- Pending
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A hidden pull-back type high-safety injector is composed of an injecting cylinder, a hollow push rod able to axially move in said injecting cylinder, an action rod hidden and movable in said push rod, a piston fixed to front end of push rod, a needle held by the front end of injecting cylinder and having a fastening hole and a fastening block at one end of action rod and matched with said fastening hole of needle.
Description
Technical field
The present invention relates to a kind of hidden type haulback safety syringe.
Background technology
For increasing the safety of syringe, can safeguard construction be arranged in injector designed usually now, general common safeguard construction is that the mode of utilizing push rod to pull back retracts syringe needle in the injection tube.As shown in figure 13, it comprises that an injection tube 6, a syringe needle 7 and are placed in the push rod 8 of this injection tube 6, one end of this injection tube 6 is provided with a holding block 61, one end of this holding block 61 is inserted solid for this syringe needle 7, and the other end of this holding block 61 is provided with a clamping hole 611, for projection 81 fixings of these push rod 8 tail ends.Whereby, after propelling movement push rod 8 injection medicaments finish, when this push rod 8 continues to be pushed into the bottom, the projection 81 of this push rod 8 can be fastened in the clamping hole 611 of this holding block 61, pull back this push rod 8 this moment again, syringe needle 7 can be retracted in injection tube 6, be subjected to needle sting and infect infectious disease to avoid nursing staff or other personnel.
But existing haulback type safe injection needle still has its shortcoming, because this entry needle is not when using, this push rod 8 is to expose to injection tube 6 one ends, however packing, all must extreme care when transporting or carrying, be subjected to external force and promote with the push rod of avoiding exposing 8.Otherwise can cause this entry needle to use as yet, its push rod 8 has fixed syringe needle 7, once the projection 81 of this push rod 8 promptly can't separate after fixing the holding block 61 of these syringe needle 7 one ends, and causes this entry needle to use.
In addition, the syringe (more than 20cc) of existing larger capacity can be located at the needle stand 91 of injection tube 9 side of injection tube 9 usually, and as shown in figure 14, that is syringe needle 92 is located at a side of injection tube 9 partially.Thus, if adopt aforesaid safety design, then need projection off-centre is located at a side of push rod, therefore needing just that in use projection is aligned holding block just can make projection be fastened in the clamping hole of holding block, and syringe needle is retracted, but the rubber stopper of push rod can fit tightly with the injection tube inwall, and the program that makes projection align holding block becomes especially difficult.
So aforesaid syringe safe structure is real in addition improved necessity again.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the defective that conventional injector exists, and a kind of hidden type haulback safety syringe is provided, and it guarantees that this entry needle can not lose efficacy because of false touch.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of hidden type haulback safety syringe, comprise an injection tube, one can be in this injection tube axially movable push rod, one is hidden in this push rod and can axially movable actuating strut and be incorporated into the syringe needle of this injection tube one end, and has a pipeline in this push rod, for ccontaining this actuating strut, and an end of this push rod is connected with a plunger, and an end of ccontaining relatively this push rod of this injection tube supplies in conjunction with this syringe needle, this syringe needle has a clamping hole to a end that should injection tube, and being positioned at an end of this push rod, this actuating strut has a holding block that can be operated this push rod that stretches through out, this holding block is the form that cooperates with the clamping hole of this syringe needle, by this holding block in conjunction with this syringe needle, this plunger has a breakthrough portion to clamping hole that should syringe needle, this breakthrough portion stretches through to the clamping hole of this syringe needle for the holding block of this actuating strut, and the other end of relative this holding block of this actuating strut forms an end face, this end face comprises the annular end face of push rod, for promoting this push rod.
Aforesaid hidden type haulback safety syringe, wherein have one in the injection tube and supply the ccontaining and ccontaining holding channel of this push rod of medicament, this injection tube has a location division at this holding channel one end, and for this syringe needle close-fitting engaging, and the other end of this holding channel supplies an end of this push rod to stretch out.
Aforesaid hidden type haulback safety syringe, wherein the end face of the end face of actuating strut one end and this push rod is including but not limited at grade.
Aforesaid hidden type haulback safety syringe, wherein the holding block of actuating strut is to be connected with a cervical region little than the external diameter of this holding block, makes this holding block and this cervical region junction form this stopper.
Aforesaid hidden type haulback safety syringe, wherein syringe needle has an opening, and this opening part is connected with a cover plate, offers described clamping hole in this cover plate.
Aforesaid hidden type haulback safety syringe, wherein syringe needle has an opening with as clamping hole.
Aforesaid hidden type haulback safety syringe, wherein clamping hole is into * shape, fixes after stretching through for this holding block.
Aforesaid hidden type haulback safety syringe, wherein clamping hole is an across, fixes after stretching through for this holding block.
Aforesaid hidden type haulback safety syringe, wherein clamping hole becomes in-line, fixes after stretching through for this holding block.
Aforesaid hidden type haulback safety syringe, wherein the plunger on the push rod is cut with many joint-cuttings to form described breakthrough portion, is passed by joint-cutting for holding block.
Aforesaid hidden type haulback safety syringe, wherein the location division of injection tube is that off-centre is arranged at a side, for the syringe needle setting, the also corresponding off-centre of being located in the push rod of actuating strut is provided with described holding block.
Aforesaid hidden type haulback safety syringe wherein is provided with a labelling to position that should holding block on the end face of actuating strut, makes this holding block aim at this syringe needle for this actuating strut of operation.
Aforesaid hidden type haulback safety syringe, wherein push rod is being equipped with a groove near a section of plunger, this actuating strut in the position that fixes with this syringe needle to should also being provided with an annular groove by groove, to form a fragile structure place that can be easy to fracture.
Aforesaid hidden type haulback safety syringe, wherein syringe needle is Lu Er (Luer) syringe needle of normal formula, and the location division of this injection tube is to be designed to inner edge and the friction tight form of this syringe needle, fix for this syringe needle, and the holding block of this actuating strut, be the friction tight taper of clamping hole inner edge with syringe needle, can combine with this syringe needle chucking after making this holding block be pushed into this clamping hole.
Aforesaid hidden type haulback safety syringe, wherein holding block has a stopper of radially protruding, for combining with the clamping hole dogging of this syringe needle.
Because the present invention is to be hidden in this push rod in order to the actuating strut that fixes syringe needle, it does not expose to outside the push rod, so in packing, when transporting or carrying, if accidentally when pushing away in this push rod, the holding block of this actuating strut still can not be fastened in the clamping hole of syringe needle, therefore this push rod can return back to original position continuation use, and does not influence this syringe needle, guarantees that this entry needle can not lose efficacy because of false touch.
The present invention if the utilization one normal formula Lu Er (Luer) syringe needle the time, can be directly get final product as last clamping hole or the opening part that utilizes a cover plate with clamping hole to be fixed in syringe needle with the opening of the Lu Erzhen of normal formula, and need not make syringe needle in addition, to save cost.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an exploded perspective sketch map of the present invention.
Fig. 2 is an assembled sectional view of the present invention.
Fig. 3 is the local amplification view of the present invention.
Fig. 4 is that actuating strut holding block of the present invention stretches through and is fastened in the sketch map of syringe needle clamping hole.
Fig. 5 is one of structural representation of syringe needle of the present invention
Fig. 6 be syringe needle of the present invention structural representation two
Fig. 7 is the present invention with pull back sketch map to injection tube of syringe needle.
Fig. 8 is the sectional view of second embodiment of the invention structure.
Fig. 9 is the vertical view of second embodiment of the invention structure.
Figure 10 is the upward view of the push rod of second embodiment of the invention
Figure 11 is the sectional view that the present invention the 3rd executes routine structure.
Figure 12 is the structural representation that the syringe needle of third embodiment of the invention cooperates with the location division
Figure 13 is the sketch map of existing haulback type safe injection needle.
Figure 14 is the structural representation of existing high capacity injection tube.
The specific embodiment
See also Fig. 1 to Fig. 3, the present embodiment hidden type haulback safety syringe, its be comprise can be in this injection tube 1 axially movable push rod of an injection tube 1, one 2, can be in this push rod 2 axially movable actuating strut 3 and be incorporated into the syringe needle 4 of these injection tube 1 one ends, wherein: have one in this injection tube 1 for the holding channel 11 that medicament is ccontaining and this push rod 2 is ccontaining, this injection tube 1 has a location division 12 at these holding channel 11 1 ends, locating this syringe needle 4, and the other end of this holding channel 11 to be ends for this push rod 2 stretch out.
Has a pipeline 21 in this push rod 2, for ccontaining this actuating strut 3, the end that this push rod 2 is positioned at this injection tube 1 is connected with a plunger 22,22 pairs of this plungers should have a breakthrough portion by pipeline 21, be to be designed to a perforation 221 in the present embodiment, and the other end of this push rod 2 forms an end face 23, for promoting this push rod 2.
This actuating strut 3 is to be placed in the pipeline 21 of push rod 2, and can move axially along this pipeline 21, the end face 33 of these actuating strut 3 one ends comprises the annular end face 23 for the push rod 2 of hide actions bar 3, in the present embodiment, its both ends of the surface the 33, the 23rd, (this only uses for explanation at grade, be not in order to restriction the present invention), and an end of the plunger 22 that 3 pairs of this actuating struts should push rod 2 has a holding block 32, this holding block 32 has a stopper 321.In the present embodiment, this holding block 32 is one cone-shaped and be connected than the little cervical region 31 in the bar of actuating strut 3 footpath with one, make this holding block 32 form this stopper 321 with these cervical region 31 junctions, and the pointed cone place of this holding block 32 is perforation 221 places (this is not in order to restriction the present invention only for explanation usefulness) that are butted on the plunger 22 of this push rod 2.
The end that this syringe needle 4 is positioned the location division 12 of injection tube 1 has a clamping hole 41, for holding block 32 fixings of actuating strut 3.In the present embodiment, during Lu Er (Luer) syringe needle of utilization normal formula, the opening part of this syringe needle 4 has a cover plate 42, and this cover plate 42 can be shaped in the opening part of syringe needle 4 or be fixed in the opening part of syringe needle 4 in addition certainly.And offering clamping hole 41 in this cover plate 42, this clamping hole 41 is to cut into * shape or cross (as shown in Figure 5) or in-line (as shown in Figure 6) in this cover plate 42, fixes after stretching through for this holding block 32.
In addition, this push rod 2 is being equipped with a groove 24 near a section of plunger 22, to form a more fragile position, and this actuating strut 3 in position that the clamping hole 41 of this holding block 32 and this syringe needle fixes to should also being provided with an annular groove 35 by groove 24, arrive syringe needle 4 is drawn in injection tube 1 (as shown in Figure 7) at this push rod 2 and actuating strut 3 locate after, but the application of force bends this push rod 2 and actuating strut 3, make this push rod 2 and actuating strut 3 be fractureed with annular groove 35 places by groove 24 respectively, and syringe needle 4 is held in the injection tube 1, to guarantee safety.
After the drug injection in this injection tube 1 is intact, when the plunger 22 of this push rod 2 is pushed to the end, the perforation 221 of this plunger 22 can correspond to the clamping hole 41 of this syringe needle 4, utilize finger tip to push away in this actuating strut 3 this moment again, make the holding block 32 of this actuating strut 3 pass the perforation 221 of this plunger 22, the clamping hole 41 of this syringe needle 4 that stretched through again; When pulling back, this push rod 2 can together pull back by related this actuating strut 3; and the holding block 32 of this actuating strut 3 is because of the block of stopper 321; this syringe needle 4 can be pulled back to this injection tube 1; as Fig. 4 and shown in Figure 7; again this push rod 2 is fractureed; syringe needle 4 is retained in this injection tube 1, once uses the safety criterion that total loss is ruined, perfect protection and safety measure are arranged to guarantee the contactee and reach.
Certainly, aforesaid holding block 32 except that be designed to cone-shaped, also can be designed to square, trapezoidal, horn shape or circular arc and all have identical effect.
Because the present invention is to be hidden in this push rod in order to the actuating strut that fixes syringe needle, it does not expose to outside the push rod, so in packing, when transporting or carrying, if not very when pushing away in this push rod, the holding block of this actuating strut still can not be fastened in the clamping hole of syringe needle, therefore this push rod can return back to original position continuation use, and does not influence this syringe needle, can guarantee that this entry needle can not lose efficacy because of false touch.
Moreover, the present invention if the utilization one normal formula Lu Er (Luer) syringe needle the time, the opening part that can utilize a cover plate with clamping hole to be fixed in syringe needle get final product, and need not make syringe needle in addition, with the saving cost.
Certainly, still there are many examples in the present invention, therebetween the only variation on the details.See also Fig. 8 to Figure 10, it is the second embodiment of the present invention, wherein the location division 12A of this injection tube 1A is that off-centre is arranged at a side, be provided with for syringe needle 4A, and the also corresponding off-centre of being located among the push rod 2A of actuating strut 3A is provided with this holding block 32A, and position that should holding block 32A is provided with a labelling 34A at the end face 33A of this actuating strut 3A, and with many joint-cutting 24A of the plunger 22A on push rod 2A cutting to become aforesaid breakthrough portion, after making the syringe needle 4A among this labelling 34A aligning location division 12A, can promote this actuating strut 3A makes holding block 32A be passed by joint-cutting 24A to align the action that syringe needle 4A fixes, so just, design of the present invention can be applied to use in the jumbo injection tube, and reach identical effect with aforementioned first embodiment.
See also Figure 11 and Figure 12 again, it is a third embodiment of the invention, wherein this syringe needle 4B is to use Lu Er (Luer) syringe needle of normal formula, the opening of this syringe needle 4B promptly can be used as clamping hole 41B, and the location division 12B of this injection tube 1B is designed to inner edge and the friction tight form of normal formula Lu Er (Luer) syringe needle 4B, fixes for this syringe needle 4B.And the holding block 32B of this actuating strut 3B, also be designed to the friction tight taper form of clamping hole 41B inner edge with syringe needle 4B, can and this syringe needle 4B inwardly be pulled back with this syringe needle 4B chucking after making this holding block 32B be pushed into the clamping hole 41B of syringe needle 4B, so also can reach identical effect with aforementioned first embodiment.
Claims (15)
1, a kind of hidden type haulback safety syringe, comprise an injection tube, one can be in this injection tube axially movable push rod, one is hidden in this push rod and can axially movable actuating strut and be incorporated into the syringe needle of this injection tube one end, and has a pipeline in this push rod, for ccontaining this actuating strut, and an end of this push rod is connected with a plunger, and an end of ccontaining relatively this push rod of this injection tube supplies in conjunction with this syringe needle, this syringe needle has a clamping hole to a end that should injection tube, and being positioned at an end of this push rod, this actuating strut has a holding block that can be operated this push rod that stretches through out, this holding block is the form that cooperates with the clamping hole of this syringe needle, by this holding block in conjunction with this syringe needle, this plunger has a breakthrough portion to clamping hole that should syringe needle, this breakthrough portion stretches through to the clamping hole of this syringe needle for the holding block of this actuating strut, and the other end of relative this holding block of this actuating strut forms an end face, this end face comprises the annular end face of push rod, for promoting this push rod.
2, hidden type haulback safety syringe according to claim 1, it is characterized in that having in the described injection tube one and supply the ccontaining and ccontaining holding channel of this push rod of medicament, this injection tube has a location division at this holding channel one end, for this syringe needle close-fitting engaging, and the other end of this holding channel supplies an end of this push rod to stretch out.
3, hidden type haulback safety syringe according to claim 1, the end face that it is characterized in that the end face of described actuating strut one end and this push rod is including but not limited at grade.
4, hidden type haulback safety syringe according to claim 1, the holding block that it is characterized in that described actuating strut are to be connected with a cervical region little than the external diameter of this holding block, make this holding block and this cervical region junction form this stopper.
5, hidden type haulback safety syringe according to claim 1 is characterized in that described syringe needle has an opening, and this opening part is connected with a cover plate, offers described clamping hole in this cover plate.
6, hidden type haulback safety syringe according to claim 1 is characterized in that described syringe needle has an opening with as clamping hole.
7, according to claim 5 or 6 described hidden type haulback safety syringes, it is characterized in that described clamping hole is into * shape, fix after stretching through for this holding block.
8, according to claim 5 or 6 described hidden type haulback safety syringes, it is characterized in that described clamping hole is an across, fix after stretching through for this holding block.
9, according to claim 5 or 6 described hidden type haulback safety syringes, it is characterized in that described clamping hole becomes in-line, fix after stretching through for this holding block.
10. hidden type haulback safety syringe according to claim 1 is characterized in that the plunger on the described push rod is cut with many joint-cuttings to form described breakthrough portion, is passed by joint-cutting for holding block.
Be arranged at a side 11. hidden type haulback safety syringe according to claim 1, the location division that it is characterized in that described injection tube are off-centre, for the syringe needle setting, the also corresponding off-centre of being located in the push rod of actuating strut is provided with described holding block.
12. hidden type haulback safety syringe according to claim 1 is characterized in that on the end face of described actuating strut position that should holding block is provided with a labelling, makes this holding block aim at this syringe needle for this actuating strut of operation.
13. hidden type haulback safety syringe according to claim 1, it is characterized in that described push rod is being equipped with a groove near a section of plunger, this actuating strut in the position that fixes with this syringe needle to should also being provided with an annular groove by groove, to form a fragile structure place that can be easy to fracture.
14. hidden type haulback safety syringe according to claim 1, it is characterized in that described syringe needle is the Lu Er syringe needle of normal formula, and the location division of this injection tube is to be designed to inner edge and the friction tight form of this syringe needle, fix for this syringe needle, and the holding block of this actuating strut, be the friction tight taper of clamping hole inner edge with syringe needle, can combine with this syringe needle chucking after making this holding block be pushed into this clamping hole.
15. hidden type haulback safety syringe according to claim 1 is characterized in that described holding block has a stopper of radially protruding, for combining with the clamping hole dogging of this syringe needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510066537 CN1724085A (en) | 2004-07-21 | 2005-04-28 | Hidden type haulback safety syringe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020079 CN1597001A (en) | 2004-07-21 | 2004-07-21 | Hidden back pulling type safety injector |
| CN200410020079.0 | 2004-07-21 | ||
| CN 200510066537 CN1724085A (en) | 2004-07-21 | 2005-04-28 | Hidden type haulback safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1724085A true CN1724085A (en) | 2006-01-25 |
Family
ID=35923802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510066537 Pending CN1724085A (en) | 2004-07-21 | 2005-04-28 | Hidden type haulback safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1724085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267468A (en) * | 2015-06-04 | 2017-01-04 | 陈冠儒 | The syringe of incidental injury prevention |
-
2005
- 2005-04-28 CN CN 200510066537 patent/CN1724085A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267468A (en) * | 2015-06-04 | 2017-01-04 | 陈冠儒 | The syringe of incidental injury prevention |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2476246C2 (en) | New safe self-block, self-destructing syringe | |
| CN1758929A (en) | Spring launched needle safety clip | |
| NO336484B1 (en) | Disposable Syringe | |
| WO2009127122A1 (en) | A safety syringe | |
| CN2748099Y (en) | Safety syringe with automatic retractable needle | |
| CN2803412Y (en) | Safety self-destroying and disposable syringe | |
| CN1724085A (en) | Hidden type haulback safety syringe | |
| TWM586615U (en) | Injection syringe | |
| CN101060875A (en) | Safety syringe | |
| CN2782120Y (en) | Safety self-destroying disposable syringe | |
| CN1597001A (en) | Hidden back pulling type safety injector | |
| CN2764414Y (en) | Safe injection syringe | |
| CN101028548A (en) | Disposable safety syringe | |
| CN2801182Y (en) | Safety injector with automatic retractable needle | |
| CN101239210A (en) | Self-destroyed safety syringe | |
| CN2917670Y (en) | Disposable safe syringe | |
| CN2654147Y (en) | Disposable safety self destroyed micro residual injector | |
| CN1861206A (en) | Safety injector and its operating method | |
| CN2788829Y (en) | Disposable medical safety injector | |
| CN102284114B (en) | Self-destroying injector | |
| CN212141084U (en) | Collection bottle for disassembling and recovering needle | |
| CN201164634Y (en) | Self-destruction safety injector | |
| CN2505108Y (en) | Syringe with destructor | |
| CN215585071U (en) | Retraction type safe self-destruction syringe | |
| CN2673412Y (en) | Automatic safety injector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |