CN208114883U - A kind of retraction type self-destroyed syringe of safety - Google Patents
A kind of retraction type self-destroyed syringe of safety Download PDFInfo
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- CN208114883U CN208114883U CN201721724184.1U CN201721724184U CN208114883U CN 208114883 U CN208114883 U CN 208114883U CN 201721724184 U CN201721724184 U CN 201721724184U CN 208114883 U CN208114883 U CN 208114883U
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- syringe
- needle attachment
- push rod
- cylinder
- needle
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Abstract
The utility model relates to the field of medical instrument technology more particularly to a kind of retraction type self-destroyed syringes of safety.The retraction type self-destroyed syringe of the safety includes cylinder, push rod, piston, needle attachment and syringe needle, one end of the push rod and piston are respectively positioned in the cylinder, the piston is set to the front end of the push rod, the needle attachment is axially arranged with through-hole from front end to rear end, the needle attachment is inserted in the cylinder neck of the barrel front end, the syringe needle is set to the front end of the needle attachment, the front end of the push rod is equipped with tapered end, and the tapered end is pierced by the front end of the piston, the rear end of the needle attachment is equipped with the slot that can be locked together with the tapered end.The utility model considerably reduces liquor residue after injection, to reduce resource waste, by the low pollution to environment.The utility model can be effectively carried out safe retraction, prevents syringe from being recycled, avoids secondary pollution.
Description
Technical field
The utility model relates to the field of medical instrument technology more particularly to a kind of retraction type self-destroyed syringes of safety.
Background technique
Currently, syringe major part in the market is traditional type, including injection needle be all without any safety device, not only
It may be reused, and drug and blood is be easy to cause to pollute, in addition injection needle is exposed, more easily cause medical staff and cleaning people
Member's stabs, and deepens the prevalence of infectious disease.
With the extensive use of syringe, to avoid the occurrence of cross-infection, more and more self-destruction syringes are appeared in
On the market, self-destruction syringe is the disposable syringe product that can prevent from reusing after, and wide variety is being injected
Bi Hou relies on either manually or mechanically strength, prevents push rod from extracting out out of syringe, reach self-locking or piston leakproofness and broken
Bad or syringe push rod can be pushed off, and be finally reached the purpose for preventing recycling.
Currently, this syringe, which passes through, is arranged specific package assembly on the market there is also a variety of retraction self-destroyed syringes,
It retract to needle tubing can in syringe after the completion of injection, realize self-destroying function, but the structure of this kind of retraction self-destroyed syringe
Complexity, assembly precision require height, cause manufacturing cost excessively high, meanwhile, the security performance of this type is unstable, various reasons
Being widely popularized for this product is restrict, medical staff makes up a prescription using liquid medicine is usually repeatedly extracted when syringe, needs to protect
Air in card syringe is completely exhausted out, so injection rod must be shifted onto the zero-bit of syringe, but this operation is easy to appear
Safety problem, injection rod trigger the self-destroying function of syringe, syringe are caused not to be available when shifting zero-bit onto, on the other hand,
When user uses this type of syringe to patient injection medicament, also fault easy to operate triggers during injection
The self-destroying function of syringe causes needle tubing directly to be extracted unexpected in patient body, it is possible to cause malpractice.
Utility model content
(1) technical problems to be solved
The purpose of the utility model is to provide a kind of retraction type self-destroyed syringes of safety, to solve existing self-destruction syringe
It cannot effectively carry out the technical issues of safe self-destruction.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of retraction type self-destroyed syringe of safety, including cylinder
Body, push rod, piston, needle attachment and syringe needle, one end of the push rod and piston are respectively positioned in the cylinder, and the piston is set
In the front end of the push rod, the needle attachment is equipped with through-hole from front end to rear end, and the needle attachment is inserted in described
In the cylinder neck of barrel front end, the syringe needle is set to the front end of the needle attachment, and the front end of the push rod is equipped with tapered end, and institute
The front end that tapered end is pierced by the piston is stated, the rear end (specially rear end inner wall) of the needle attachment is equipped with can be with the tapered end
The slot to lock together.
Further, the cylinder neck inner wall is equipped with block, and the block offers embeded slot, the needle attachment it is outer
Wall is equipped with outer lug that can be mutually chimeric with the embeded slot.When work, forward thrust is applied to needle attachment, makes outer lug
It is detached from embeded slot, rotating needle connector, can make outer lug be staggered with the block on cylinder neck inner wall at this time, then connect to syringe needle
Fitting applies pulling force backward, can retract needle attachment in cylinder, thus the block, embeded slot and outer lug are set
It sets, so that needle attachment and the connection of cylinder neck and separating and becoming more convenient, and then is set back in cylinder convenient for needle attachment
It is interior.
Further, the block and outer lug are two, and two blocks are respectively arranged on cylinder neck rear end
The opposite two sides of inner wall, two outer lugs are respectively arranged on the opposite two sides of needle attachment rear end outer wall.
Further, the needle attachment week to the periphery be equipped with sealing ring so that the needle attachment with it is described
Cylinder neck inner wall fits closely, to prevent leakage.
Further, the week of the needle attachment is equipped with annular groove to the periphery, and the sealing ring is set to the annular
In groove.
Further, the piston is equipped with hollow inner cavity, and the front end of the push rod is socketed on described interior intracavitary.
Further, the week of the piston is equipped with flange to the periphery, so that the piston is fitted closely with cylinder inboard wall, from
And prevent leakage.
Further, the rear end inner wall of the cylinder is equipped with raised block edge, is socketed with snap ring to the periphery in the week of the push rod,
The snap ring is matched with the raised block edge, the push rod is limited in the cylinder, i.e., the outer diameter of the described snap ring is big
In the interior warp of the raised block edge.
Further, the tapered end is cylindrical or cone cell.
Further, the needle attachment is cylindrical.
(3) beneficial effect
The above-mentioned technical proposal of the utility model has the advantages that：
1, the front end of the self-destruction syringe of the utility model, push rod is equipped with tapered end, and tapered end is pierced by the front end of piston,
The rear end inner wall of needle attachment is equipped with the slot that can be locked together with tapered end, and when the injecting liquid drug of inner barrel finishes, this is pushed away
The tapered end of bar slides into the slot of needle attachment rear end, rotating push rod, keeps tapered end and slot locked (to make push rod and syringe needle
Connector is locked), liquor residue is considerably reduced after injection, to greatly reduce the wasting of resources, cylinder is intracorporal low
Liquor residue is also by the low pollution to environment.User, which can further exert a force, at this time rotates and pulls back the push rod, enables
Push rod is set back in cylinder, since push rod and needle attachment have locked, so while retracting push rod, related syringe needle connection
Part retracts in cylinder together with syringe needle, and i.e. one side or inclination leans against on cylinder inboard wall after syringe needle retracts in cylinder, at this time
Again by push rod to being pushed forward, syringe needle is gradually bent and voluntarily damages, thus effectively prevent that syringe needle is exposed to stab medical staff, and
And prevent syringe from being recycled, and then avoid secondary pollution.Thus, which can be effectively performed
Safety retraction, and structure is simple, it is easy to operate.
2, the utility model is provided with block in cylinder neck inner wall, embeded slot has further been opened up on block, while in needle
Outer lug that can be mutually chimeric with embeded slot is provided on the outer wall (rear end outer wall) of head connector.When work, to needle attachment
Apply forward thrust, is detached from outer lug and embeded slot, rotating needle connector, can make outer lug and cylinder neck inner wall at this time
On block be staggered, then pulling force backward is applied to needle attachment, needle attachment can be retracted in cylinder, thus described
The setting of block, embeded slot and outer lug, so that needle attachment and the connection of cylinder neck and separate and become more convenient, Jin Erbian
It is set back in cylinder in needle attachment.
Detailed description of the invention
Fig. 1 is the decomposition diagram of push rod and piston described in the utility model embodiment；
Fig. 2 is the decomposition diagram of cylinder and needle attachment described in the utility model embodiment；
Fig. 3 is the structural schematic diagram one of the retraction type self-destroyed syringe of safety described in the utility model embodiment, shows medicine
Liquid does not inject state；
Fig. 4 is the structural schematic diagram two of the retraction type self-destroyed syringe of safety described in the utility model embodiment, shows medicine
The injection state of liquid；
Fig. 5 is the structural schematic diagram three of the retraction type self-destroyed syringe of safety described in the utility model embodiment, and display pushes away
Bar pulls the state of needle attachment and needle retractable；
Fig. 6 is the structural schematic diagram of needle attachment described in the utility model embodiment；
Fig. 7 is the structural schematic diagram of the other direction of needle body connector described in the utility model embodiment；
Fig. 8 is the cross-sectional view of needle attachment described in the utility model embodiment；
Wherein, 1, push rod；13, snap ring；14, the front end of push rod；142, tapered end；2, piston；22, inner cavity；23, flange；3,
Cylinder；31, cylinder neck；32, raised block edge；33, embeded slot；4, needle attachment；42, slot；43, annular groove；44, evagination
It rises；5, sealing ring；6, syringe needle.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
For illustrating the utility model, but cannot be used to limit the scope of the utility model.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term
The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood depending on concrete condition.
As shown in FIG. 1 to FIG. 8, a kind of retraction type self-destroyed syringe of safety is present embodiments provided comprising cylinder 3 pushes away
Bar 1, piston 2, needle attachment 4 and syringe needle 6, one end of push rod 1 and piston 2 are respectively positioned in cylinder 3, and piston 2 is set to push rod
Front end 14, needle attachment 4 are equipped with through-hole from front end to rear end, and needle attachment 4 is inserted in the cylinder neck 31 of 3 front end of cylinder,
Syringe needle 6 is set to the front end of needle attachment 4, and the front end 14 of push rod is equipped with tapered end 142, and tapered end 142 is pierced by the front end of piston 2,
The rear end inner wall of needle attachment 4 is equipped with the slot 42 that can be locked together with tapered end 142.Tapered end 142 is cylindrical or cone cell.Syringe needle
Connector 4 is cylindrical.The material of piston 2 is rubber.
Cylinder 31 inner wall of neck is equipped with block, and block offers embeded slot 33, and the outer wall of needle attachment 4 is equipped with can be with embeded slot
The chimeric outer lug 44 of 33 phases.Specifically, referring to Fig. 6~Fig. 8, block and outer lug 44 are two, and two blocks point
Not She Yu the opposite two sides of 31 rear end inner wall of cylinder neck, it is opposite that two outer lugs 44 are respectively arranged on 4 rear end outer wall of needle attachment
Two sides.
The week of needle attachment 4 is equipped with sealing ring 5 to the periphery, so that needle attachment 4 is fitted closely with 31 inner wall of cylinder neck,
To prevent leakage.The week of needle attachment 4 is equipped with annular groove 43 to the periphery, and sealing ring 5 is set in annular groove 43.
Piston 2 is equipped with hollow inner cavity 22, and the front end 14 of push rod is socketed in inner cavity 22.The week of piston 2 is equipped with to the periphery
Flange 23, so that piston 2 is fitted closely with 3 inner wall of cylinder, to prevent leakage.
The rear end inner wall of cylinder 3 is equipped with raised block edge 32, is socketed with snap ring 13 week of push rod 1 to the periphery, snap ring 13 with it is convex
It plays block edge 32 and matches (i.e. interior warp of the outer diameter of snap ring 13 greater than raised block edge 32), push rod 1 is limited in cylinder 3, is pushed away
Bar 1 can not be detached from cylinder 3, to further avoid the exposed bring potential danger of syringe needle 6.
In conclusion the self-destruction syringe of the present embodiment, the front end of push rod is equipped with tapered end, and tapered end is pierced by piston
Front end, the rear end inner wall of needle attachment is equipped with the slot that can be locked together with tapered end, when the injecting liquid drug of inner barrel finishes,
The tapered end of the push rod slides into the slot of needle attachment rear end, rotating push rod, make tapered end and slot it is locked (thus make push rod with
Needle attachment is locked), liquor residue is considerably reduced after injection, so that the wasting of resources is greatly reduced, in cylinder
Low liquor residue also by the low pollution to environment.User can further exert a force to rotate and pull back this and push away at this time
Bar enables push rod be set back in cylinder, since push rod and needle attachment have locked, so while retracting push rod, related needle
Head connector retracts in cylinder together with syringe needle, and the rear end inner wall of cylinder is equipped with raised block edge, is equipped with to the periphery in the week of push rod
Snap ring makes push rod that can not be detached from inner barrel, and i.e. one side or inclination leans against on cylinder inboard wall after syringe needle retracts in cylinder,
At this time again by push rod to being pushed forward, syringe needle is gradually bent and voluntarily damages, to effectively prevent that syringe needle is exposed to stab medical care people
Member, and prevent syringe from being recycled, and then avoid secondary pollution.Thus, which can be effective
Ground carries out safe retraction, and structure is simple, easy to operate.
The self-destruction syringe of the present embodiment is provided with block in cylinder neck inner wall, has further opened up on block chimeric
Slot, at the same on the rear end outer wall of needle attachment be provided with can be mutually chimeric with embeded slot outer lug.When work, syringe needle is connected
Fitting applies forward thrust, is detached from outer lug and embeded slot, rotating needle connector, can make outer lug and cylinder neck at this time
Block on inner wall is staggered, then applies pulling force backward to needle attachment, can retract needle attachment in cylinder, thus
The setting of the block, embeded slot and outer lug, so that needle attachment and the connection of cylinder neck and separate and become more convenient, into
And it is set back in cylinder convenient for needle attachment.
The embodiments of the present invention are provided for example and description, and are not exhaustively or by this reality
It is limited to disclosed form with novel.Many modifications and variations are apparent for the ordinary skill in the art
's.Embodiment was chosen and described in order to better illustrate the principle and practical application of the utility model, and makes the general of this field
Lead to technical staff it will be appreciated that the utility model is to design various embodiments suitable for specific applications with various modifications.
Claims (10)
1. a kind of retraction type self-destroyed syringe of safety, including cylinder, push rod, piston, needle attachment and syringe needle, the push rod
One end and piston are respectively positioned in the cylinder, the piston be set to the push rod front end, the needle attachment from front end extremely
Rear end is axially arranged with through-hole, and the needle attachment is inserted in the cylinder neck of the barrel front end, and the syringe needle is set to described
The front end of needle attachment, which is characterized in that before the front end of the push rod is equipped with tapered end, and the tapered end is pierced by the piston
End, the rear end of the needle attachment are equipped with the slot that can be locked together with the tapered end.
2. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the cylinder neck inner wall is equipped with gear
Block, the block offer embeded slot, and the outer wall of the needle attachment is equipped with outer lug that can be mutually chimeric with the embeded slot.
3. the retraction type self-destroyed syringe of safety according to claim 2, which is characterized in that the block and outer lug are
Two, and two blocks are respectively arranged on the opposite two sides of cylinder neck rear end inner wall, two outer lugs are respectively arranged on
The opposite two sides of needle attachment rear end outer wall.
4. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the circumferential direction of the needle attachment
Periphery is equipped with sealing ring, so that the needle attachment is fitted closely with the cylinder neck inner wall.
5. the retraction type self-destroyed syringe of safety according to claim 4, which is characterized in that the circumferential direction of the needle attachment
Periphery is equipped with annular groove, and the sealing ring is set in the annular groove.
6. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the piston is equipped with hollow interior
Chamber, the front end of the push rod are socketed on described interior intracavitary.
7. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the week of the piston sets to the periphery
There is flange, so that the piston is fitted closely with cylinder inboard wall.
8. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the rear end inner wall of the cylinder is set
There is raised block edge, be socketed with snap ring the week of the push rod to the periphery, the snap ring is matched with the raised block edge, will be described
Push rod is limited in the cylinder.
9. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the tapered end is cylindrical or bores
Shape.
10. the retraction type self-destroyed syringe of safety according to claim 1, which is characterized in that the needle attachment is in circle
Column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721724184.1U CN208114883U (en) | 2017-12-12 | 2017-12-12 | A kind of retraction type self-destroyed syringe of safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721724184.1U CN208114883U (en) | 2017-12-12 | 2017-12-12 | A kind of retraction type self-destroyed syringe of safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208114883U true CN208114883U (en) | 2018-11-20 |
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ID=64208322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721724184.1U Active CN208114883U (en) | 2017-12-12 | 2017-12-12 | A kind of retraction type self-destroyed syringe of safety |
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| CN (1) | CN208114883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109908433A (en) * | 2018-12-05 | 2019-06-21 | 王琳 | Disposable micro high-precision safety injector |
-
2017
- 2017-12-12 CN CN201721724184.1U patent/CN208114883U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109908433A (en) * | 2018-12-05 | 2019-06-21 | 王琳 | Disposable micro high-precision safety injector |
| WO2020113758A1 (en) * | 2018-12-05 | 2020-06-11 | 王琳 | Disposable high-precision safe microsyringe |
| CN109908433B (en) * | 2018-12-05 | 2022-02-08 | 王琳 | Disposable micro high-precision safety syringe |
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| GR01 | Patent grant |