CN108904926A - A kind of anti-pollution injector of improvement - Google Patents
A kind of anti-pollution injector of improvement Download PDFInfo
- Publication number
- CN108904926A CN108904926A CN201810942939.8A CN201810942939A CN108904926A CN 108904926 A CN108904926 A CN 108904926A CN 201810942939 A CN201810942939 A CN 201810942939A CN 108904926 A CN108904926 A CN 108904926A
- Authority
- CN
- China
- Prior art keywords
- plug
- elastic
- syringe
- push rod
- casing
- 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.)
- Granted
Links
- 241001149930 Protura <class> Species 0.000 claims abstract description 19
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
- A61M2005/3121—Means preventing contamination of the medicament compartment of a syringe via the proximal end of a syringe, i.e. syringe end opposite to needle cannula mounting end
Abstract
The invention discloses a kind of anti-pollution injectors of improvement, including syringe, plug, elastic mantle casing, arrange that push rod, elastic mantle casing are set in outside push rod in syringe, elastic mantle casing close to plug open at one end and be equipped with the elastic ring being cooperatively connected with plug；Elastic mantle casing is closed far from the other end of plug and is set between conehead and piston.The advantage is that elastic mantle casing is realized with one end of piston motion with totally enclosed structure, regardless of the state in nature or injection stretch, it is able to maintain the anti-leak probability to medical fluid 100%.Production process raw material do not consume additionally, and very time saving material-saving also saves human cost.Assembling process flexibility and removable dimension are larger, and installation is easy.Lid greatly improves the contact area of closed end during closing, and is not in that serious part is pullled, thus the problem of also directly having prevented partial fracture.The new structure general assembly time improves than previous.
Description
Technical field
The present invention relates to a kind of medical instrument more particularly to a kind of antipollution syringes.
Background technique
Fig. 1 is Patent No. ZL201410038870.8《A kind of anti-pollution injector easily assembled》Structural schematic diagram,
Its structure includes syringe, and the front end of the syringe is equipped with liquid in-out mouth, and piston is equipped in the syringe and connects the piston
Column push rod, column push rod periphery are equipped with elastic mantle casing, and the rear and front end of the elasticity mantle casing is elasticity
Ring, the thickness of the elastic ring much larger than the wall thickness of the elastic mantle casing, design by the rear and front end of the column push rod
There is the cylindrical connector connecting respectively with the elastic mantle casing both ends, is located at the cylindricality of column push rod front end (at a)
Connector is fixedly connected with the column push rod, and the cylindrical connector positioned at the column putting back-end is fastened on the needle just
Tube rear end opening and cooperate with the column push rod clearance, the outer circle of each cylindrical connector is recessed with card slot, institute
The elastic ring for stating elastic mantle casing rear and front end is stuck in just in the card slot of corresponding cylindrical connector.
Its disadvantage at least has following three points：1, the probability of anti-leak cannot reach 100%；2, elastic mantle casing production
Complex process；3, elastic mantle casing assembly technology is complicated.
As long as one can all bring serious consequence in the medical field one thousandth even leakage probability of a ten thousandth,
Enable medical worker that safety can not be completely secured.Reason is the cylindrical connector of front end elastic ring corresponding with elastic mantle casing
Can be mobile with column push rod, elastic mantle casing generate axial deformation when being pushed forward and draw the elastic ring of front end, before making
It holds elastic ring that there is the trend being detached from, occurs fine clearance in deformation process.
Secondly, all have elastic ring due to elastic mantle casing both ends, production when, needs first to produce from mold
The mantle of single opening, then crimped forms first elastic ring；Closed one end is cut away again, and crimped forms second bullet again
Property ring.Production process is more, and raw material cause to waste.It needs to re-replace work when especially producing second elastic ring
Position carries out artificial reinforced, very time-consuming.
Thirdly, due to prevent from falling off, closely, elastic ring is inserted in for the connection of elastic ring and cylindrical connector
The former installation for being greater than other components of time-consuming in cylindrical connector card slot.After especially in which one end is arranged, due to spirit
Active and removable dimension is greatly reduced, and it is bigger to carry out the difficulty that the other end is arranged.The thickness of elastic mantle casing is generally all
Lower than 0.3mm, often there is serious part when second elastic ring is installed and pull, be easy to appear partial fracture.When
When there is partial fracture, general very little of splitting visually is difficult to differentiate, but penetrates into medical fluid enough and pollute.Whole
In the assembling process of a anti-pollution injector, the time accounting that both ends are arranged elastic ring reaches the 90% of total time.
Outside it, since above-mentioned technology only leans on the deflation of elastic ring to act on the cylindrical connector of fixed rear end, and medical field
After the size of the inside syringe is fixed, length-width ratio is basically unchanged.Therefore in order not to block venthole, elastic mantle casing can only be done
It is very narrow, while column push rod to also be narrowed, cause elastic mantle casing must sufficiently narrow tension enough again again, processing
It is further difficult.Current rubber processing is difficult to accomplish to meet the rubber mantle of the structure size.
Summary of the invention
In order to solve the above-mentioned problems of the prior art, prevent leakage and more completely it is an object of that present invention to provide a kind of
It is easy assembly and is easier the anti-pollution injector of production.
A kind of anti-pollution injector of improvement of the present invention, the plug including syringe and for closing syringe block up
Head is equipped with air film valve and is connected to syringe, coaxially arranged push rod in the syringe, and the push rod extends into syringe after passing through plug, pushes away
One end that bar extends into syringe is equipped with conehead for connecting piston；It further include the elastic mantle set being set between syringe and push rod
Pipe, the elasticity mantle casing close to plug open at one end and be equipped with the elastic ring that is cooperatively connected with plug；The elasticity is soft
Film casing is closed far from the other end of plug and is set between conehead and piston.
Preferably, the push rod is equipped with expanding plate close to the position of conehead；The expanding plate is for strutting elastic mantle
Casing hinders the elastic mantle casing pipeline section elastic deformation for being located at expanding plate two sides to transmit.
Preferably, the expanding plate outer diameter is greater than elastic mantle casing inner diameter and is slightly less than syringe internal diameter.
Preferably, the elastic mantle casing is equipped with breeze way close to the side of conehead in expanding plate.
Preferably, the length of the elastic mantle casing and the length ratio of push rod are 1/2~3/4.
Preferably, the plug is concave station structure, and concave station is caught in syringe and fixes, and the air film valve is arranged in concave station
Bottom.
Preferably, extend extended segment, the extension segment length into syringe in the position that the plug is connect with push rod
It is slightly less than elastic ring outer diameter, is equipped with connecting plate far from one end of plug in extended segment, the connecting plate is for radial dilatation elasticity
The opposite face of the corresponding position of mantle casing, the connecting plate and plug is for clamping elastic ring.
Preferably, elastic mantle casing pipe of the elastic ring close to extended segment, between connecting plate and plug bottom surface
Section is equipped with gap with plug bottom surface, and the air film valve is connected to the gap.
A kind of anti-pollution injector of improvement of the present invention, the advantage is that, elastic mantle casing is with piston motion
One end realized with totally enclosed structure, regardless of nature or injection stretch state, be able to maintain to medical fluid 100%
Anti-leak probability, it is ensured that the safety of medical staff.Single opening can be directly produced from mold in process of production
Mantle, then crimped forms unique elastic ring.Without secondary cut crimped, it is not necessarily to conversion station straight forming, raw material
It does not consume additionally, very time saving material-saving also saves human cost.It only need to be direct by elastic mantle casing during assembly
It is inserted in push rod, then elastic ring set upper plug head can be completed to the installation of elastic mantle casing.It is clever when elastic ring is installed
Active and removable dimension is larger, and installation is easy；And closed end is closed in conehead using piston cap with fixation, piston relative resilient is soft
The thickness of film casing then it is coarse very much, therefore by piston cap close be easy to operation process.To closed end during lid conjunction
Contact area greatly improves, and is not in that serious part is pullled, thus the problem of also directly having prevented partial fracture.The present invention
After proposing new structure, the general assembly time than improves 40% or so in the past, and economic benefit is considerable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of anti-pollution injector in the prior art；
Fig. 2 is the structural schematic diagram of the anti-pollution injector of improvement of the present invention；
Fig. 3 is the partial enlargement diagram of elastic mantle casing and push rod close to piston one end；
Fig. 4 is the partial enlargement diagram of elastic mantle casing and plug cooperation.
Specific embodiment
As shown in Figure 2,3, a kind of anti-pollution injector of improvement of the present invention mainly includes syringe 10, plug
11, push rod 20, piston 30 and elastic mantle casing 40.Described 20 one end of push rod is equipped with conehead 21, the other end is used to push, institute
The conehead 21 stated extends into syringe 10, and the plug 11 is for closing opening of the syringe 10 far from syringe needle.The syringe
The elastic mantle casing 40 of open at one end closed at one end is arranged between 10 and push rod 20, elastic mantle casing 40 opens wide one end and sets
There is the elastic ring 41 being tightly connected with plug 11, closed end is coated on outside conehead 21.It is soft that the piston 30 covers conjunction elasticity simultaneously
40 closed end of film casing and conehead 21.Elastic 40 closed end of mantle casing is fixed by piston 30, and under the drive of push rod 20 with
Piston 30 moves back and forth in syringe 10, and entire motion process is all not in leakage phenomenon.
In order to further increase the stationarity and safety of elastic mantle casing 40, push rod 20 is in the position close to conehead 21
Equipped with the expanding plate 22 radially extended, and retention gap between expanding plate 22 and conehead 21, piston 30 is fastened for providing space.
22 outer diameter of expanding plate is greater than elastic 40 internal diameter of mantle casing and is slightly less than 10 internal diameter of syringe, for strutting elastic mantle set
The corresponding position of pipe 40, so that elastic mantle casing 40 be hindered to transmit in the elastic deformation of 22 two sides of expanding plate.Push rod 20 to
When syringe needle direction pushes, far from elastic 40 pipeline section of mantle casing of syringe needle side larger deformation can occur for expanding plate 22, if
Deformation, which is transmitted to the place that piston 30 and the lid of conehead 21 close, can be such that the position that securely lid has closed originally pulls.30 He of piston
It just will appear with respect to sliding and may fall off between conehead 21.After expanding plate 22, due to the diameter phase of expanding plate 22
Sufficiently large for elastic 40 deformation quantity of mantle casing, elastic mantle casing 40 is forced to support at the corresponding position of expanding plate 22
It opens, the deformation quantity that the elastic material at this can stretch again will be greatly reduced, when elastic mantle casing 40 is located at elastic ring
One section between 41 and expanding plate 22 when stretch, deformation situation is difficult to be transmitted to another side position of expanding plate 22,
So as to avoid the corresponding closed end of piston 30, there is a situation where stretch.22 outer diameter of expanding plate is slightly less than 10 internal diameter of syringe, be for
In the case where dilatational elasticity mantle casing 40 as far as possible, it is ensured that elastic mantle casing 40 will not rub syringe 10, avoid grinding
Damage rupture.
In order to further improve the stationarity and safety of elastic mantle casing 40, elastic mantle casing 40 is in expanding plate
22 are additionally provided with breeze way close to the side of conehead 21, and the breeze way can be elastic mantle casing 40 in expanding plate 22 and envelope
Between closed end one section other than the length needed for the lid of piston 30 closes, the certain length pipeline section that also reserves.Due to expanding plate 22
With elastic 40 corresponding position of mantle casing and non-fully absolute fixation, therefore unavoidable also have a small amount of tensile deformation and pass
It is delivered to 22 other side pipeline section of expanding plate.After breeze way, breeze way is fully sufficient to inhale a small amount of deformation passed over
It receives, deformation transmitting no longer is generated to the corresponding closed end of piston 30.
It is tested by specific aim many times, the length ratio of the length and push rod 20 that obtain elastic mantle casing 40 is 1/2
When~3/4, regardless of by how many times push rod and resetting and being still able to maintain best deformation effects, wherein ratio is 2/8 most
It is good.
As shown in figure 4, the plug 11 is concave station structure, concave station is caught in syringe 10 and fixes, the air film valve 12
It is arranged in concave station bottom.Extend extended segment, the extension into syringe 10 in the position that the plug 11 is connect with push rod 20
Segment length is slightly less than 41 outer diameter of elastic ring, is equipped with connecting plate 13 far from one end of plug 11 in extended segment, the connecting plate 13 is used
In the corresponding position of radial dilatation elasticity mantle casing 40, the opposite face of the connecting plate 13 and plug 11 is used to clamp elastic ring
41.The elastic ring 41 close to extended segment, elastic 40 pipeline section of mantle casing between 11 bottom surface of connecting plate 13 and plug with
11 bottom surface of plug is equipped with gap, and the air film valve 12 is connected to the gap.
The concave station structure will can be changed to built-in by prominent air film valve originally, and operation when not will receive foreign object resistance
Gear, such as finger.Fixation provided with mantle casing elastic after connecting plate and plug is no longer rely on the elastic force of elastic ring, so that
The diameter dimension and tensile requirements of elastic mantle casing are no longer limited, and production technology can more simplify.Since connecting plate is to bullet
The effect that property ring plays the role of clamping, and has expansion to tighten the portions before elastic ring simultaneously, therefore air film valve energy
It remains and is connected to gap, without because elastic mantle casing stretches back and forth and blocks.
For those skilled in the art, it can make other each according to the above description of the technical scheme and ideas
The corresponding change of kind and deformation, and all these changes and deformation all should belong to the protection model of the claims in the present invention
Within enclosing.
Claims (8)
1. a kind of anti-pollution injector of improvement, the plug (11) including syringe (10) and for closing syringe (10), plug
(11) air film valve (12) connection syringe (10), coaxially arranged push rod (20) in the syringe (10), the push rod (20) are equipped with
It is extended into after plug (11) syringe (10), one end that push rod (20) extends into syringe (10) is equipped with conehead (21) for connecting
Piston (30)；It further include the elastic mantle casing (40) being set between syringe (10) and push rod (20), the elasticity mantle set
The open at one end of pipe (40) close plug (11) is simultaneously equipped with the elastic ring (41) being cooperatively connected with plug (11)；It is characterized in that,
The elasticity mantle casing (40) is closed and is set between conehead (21) and piston (30) far from the other end of plug (11).
2. the anti-pollution injector improved according to claim 1, which is characterized in that the push rod (20) is close to conehead
(21) position is equipped with expanding plate (22)；The expanding plate (22) is hindered to be located at expansion for strutting elastic mantle casing (40)
Elastic mantle casing (40) the pipeline section elastic deformation of piece (22) two sides is transmitted.
3. the anti-pollution injector improved according to claim 2, which is characterized in that expanding plate (22) outer diameter is greater than bullet
Property mantle casing (40) internal diameter and it is slightly less than syringe (10) internal diameter.
4. the anti-pollution injector improved according to claim 2, which is characterized in that the elastic mantle casing (40) exists
Expanding plate (22) is equipped with breeze way close to the side of conehead (21).
5. the anti-pollution injector improved according to claim 1, which is characterized in that the length of the elasticity mantle casing (40)
Degree and the length ratio of push rod (20) are 1/2~3/4.
6. the anti-pollution injector improved according to claim 1, which is characterized in that the plug (11) is concave station knot
Structure, concave station are caught in syringe (10) and fix, and the air film valve (12) is arranged in concave station bottom.
7. the anti-pollution injector improved according to claim 1, which is characterized in that the plug (11) and push rod (20)
Extended segment is extended into syringe (10) in the position of connection, and the extension segment length is slightly less than elastic ring (41) outer diameter, is extending
Section is equipped with connecting plate (13) far from the one end of plug (11), and the connecting plate (13) is used for radial dilatation elasticity mantle casing (40)
Corresponding position, the opposite face of the connecting plate (13) and plug (11) is for clamping elastic ring (41).
8. the anti-pollution injector of improvement described according to claim 6 or 7, which is characterized in that the elastic ring (41) is close
Extended segment, elastic mantle casing (40) pipeline section between connecting plate (13) and plug (11) bottom surface are equipped with plug (11) bottom surface
Gap, the air film valve (12) are connected to the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942939.8A CN108904926B (en) | 2018-08-17 | Improved anti-pollution injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942939.8A CN108904926B (en) | 2018-08-17 | Improved anti-pollution injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108904926A true CN108904926A (en) | 2018-11-30 |
| CN108904926B CN108904926B (en) | 2024-05-17 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529824A (en) * | 2020-05-15 | 2020-08-14 | 邢雪芳 | Liquid medicine syringe for hospital |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200966820Y (en) * | 2006-11-08 | 2007-10-31 | 汪鹏 | Compulsive type self-destroyed disposable syringe |
| CN101264359A (en) * | 2008-04-29 | 2008-09-17 | 陈庆强 | Automatic resorption type antipollution medicine adding syringe |
| CN201394247Y (en) * | 2009-05-19 | 2010-02-03 | 陈庆强 | Automatic resorption anti-pollution dosing injector |
| CN202426971U (en) * | 2012-01-05 | 2012-09-12 | 胡荣 | Anti-contamination syringe |
| CN103736178A (en) * | 2014-01-26 | 2014-04-23 | 陈庆强 | Anti-pollution injection syringe easy to assemble |
| CN209301903U (en) * | 2018-08-17 | 2019-08-27 | 陈庆强 | A kind of anti-pollution injector of improvement |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200966820Y (en) * | 2006-11-08 | 2007-10-31 | 汪鹏 | Compulsive type self-destroyed disposable syringe |
| CN101264359A (en) * | 2008-04-29 | 2008-09-17 | 陈庆强 | Automatic resorption type antipollution medicine adding syringe |
| CN201394247Y (en) * | 2009-05-19 | 2010-02-03 | 陈庆强 | Automatic resorption anti-pollution dosing injector |
| CN202426971U (en) * | 2012-01-05 | 2012-09-12 | 胡荣 | Anti-contamination syringe |
| CN103736178A (en) * | 2014-01-26 | 2014-04-23 | 陈庆强 | Anti-pollution injection syringe easy to assemble |
| CN209301903U (en) * | 2018-08-17 | 2019-08-27 | 陈庆强 | A kind of anti-pollution injector of improvement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529824A (en) * | 2020-05-15 | 2020-08-14 | 邢雪芳 | Liquid medicine syringe for hospital |
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