CN106620964A - Emptying type syringe - Google Patents
Emptying type syringe Download PDFInfo
- Publication number
- CN106620964A CN106620964A CN201611075730.3A CN201611075730A CN106620964A CN 106620964 A CN106620964 A CN 106620964A CN 201611075730 A CN201611075730 A CN 201611075730A CN 106620964 A CN106620964 A CN 106620964A
- Authority
- CN
- China
- Prior art keywords
- main
- syringe
- piston
- main piston
- unicom
- 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
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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
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to an emptying type syringe. The emptying type syringe comprises a needle cylinder, a syringe needle and a main piston rod; a needle cylinder nipple used for installing the syringe needle is arranged at the front end of the syringe needle, a main temporary containing cavity of temporary containing liquid medicine is arranged inside the needle cylinder, and the main piston rod is composed of a main piston moving in the main temporary containing cavity in a sealed and sliding mode and a main rod body driving the main piston to move; the emptying type syringe further comprises an auxiliary piston rod, the main rod body is internally provided with an auxiliary temporary containing cavity, an auxiliary piston rod is composed of an auxiliary piston moving in an auxiliary temporary containing cavity in a sealed and sliding mode and an auxiliary rod body driving the auxiliary piston to move, a first communication opening communicated with the auxiliary temporary containing cavity is formed in the main rod body installed at the end of the main piston, a second communication opening communicated with a main temporary containing cavity is formed in the main piston rotatably arranged at the end of the main rod body, the main temporary containing cavity is internally provided with a limiting part limiting the main piston to perform circumferential rotation, and when a first communication opening is opposite to a second communication opening, the main temporary containing cavity is communicated with the auxiliary temporary containing cavity. According to the scheme, the emptying type syringe can inject the liquid medicine completely and is provided with the replaceable syringe needle.
Description
Technical field
The present invention relates to disposable syringe, and in particular to a kind of emptying type syringe.
Background technology
Disposable syringe is one of most widely used apparatus of current medical institutions, because it can efficiently reduce injection
During cross-infection generation, be article most commonly seen in nursery work.With the progress of medical industry, self-destructing safety
Syringe, needleless injector, retractable syringe, abandon in advance type syringe etc. a new generation syringe be pushed out in succession.
Traditional disposable syringe includes syringe, syringe needle and piston rod, be provided with syringe temporarily put liquid temporarily put chamber,
By sliding in the piston for temporarily putting chamber and the body of rod of driving piston movement, syringe front end is provided with the pin for installing syringe needle to piston rod
Cylinder nipple, when using, body of rod band piston is moved to back end of syringe, liquid suction is temporarily put into chamber using air pressure, then, by syringe needle
Penetrating human body needs injection position, body of rod band piston to move to syringe front end, the liquid for temporarily putting chamber is released from syringe needle and injected
In human body, so as to the function of realizing injecting, certain occupation mode is also applied for other live bodies.But though disposable syringe is wide
It is general to be applied to clinic, but because putting at syringe nipple and temporarily chamber front end and there is dead space, it is impossible to be emptied completely medicine, cause medicine
Thing is wasted, and especially special valuable drug does not empty injection, not only relatively significantly affects its curative effect, and increase patient's economy
Burden.
To solve the above problems, one kind is developed without dead space syringe, syringe needle and the syringe of the syringe are wholely set, because
And the syringe nipple for installing syringe needle is eliminated, thus then no longer existed by the dead space that syringe nipple is formed, so as to solve
Dead space causes the problem of drug waste and injection dosage deviation, but this syringe still suffers from following shortcoming：1. cannot be more
Needle exchange head, causes single syringe to be of limited application；2. this kind of syringe is only capable of small dose drug injection, for example, inject pancreas islet
Element, skin test etc.；3. temporarily put between chamber front end and piston and still suffer from dead space, the partial invalidity chamber cannot avoid.
To solve the above problems, and then a kind of improvement suction method for being suitable for ordinary syringe is worked out, in syringe suction
Aspirate air before liquid in advance, this partial air is remained in syringe in injection, then liquid can completely be excluded, but this
Plant suction method difficulty big, suction result has larger contingency, because air can not be injected in vivo in most cases, therefore
Intravenous injection is not particularly suited for, malpractice easily occurs.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide one kind completely injects liquid and replaceable
The emptying type syringe of syringe needle.
For achieving the above object, the invention provides following technical scheme：It is described including syringe, syringe needle and main piston rod
Syringe front end be provided with syringe nipple for installing syringe needle, be provided with syringe and temporarily put the master of liquid and temporarily put chamber, it is described
Main piston rod is constituted by sliding is sealed in the main rod body that master temporarily puts the main piston in chamber and driving main piston movement, it is characterised in that：
Also include auxiliary piston bar, be provided with described mobile jib body and temporarily put the pair of emptying liquid and temporarily put chamber, described auxiliary piston bar is by sealing
Sliding is temporarily put the auxiliary piston in chamber and drives the secondary bar body composition of auxiliary piston movement, described main rod body to install the end of main piston in pair
Portion is provided with first UNICOM's mouth with Fu Zanzhi chambers UNICOM, described main piston rotate be arranged at main rod body end and be provided with
Second UNICOM's mouth of Zhu Zanzhi chambers UNICOM, described master temporarily puts and arrange in chamber the locating part that restricted main piston is circumferentially rotated, institute
Master temporarily puts chamber and temporarily puts chamber and be connected with pair when the first UNICOM's mouth stated is relative with second UNICOM's mouth position.
By adopting above-mentioned technical proposal, in use, main piston rod is promoted, be first pushed into the main piston of main rod body
Main accommodating cavity end, master temporarily puts in chamber most injecting liquid drug to human body, before in needle cavity, at syringe nipple and temporarily putting chamber
The a certain amount of liquid that cannot be released is still suffered between end and main piston, now, main rod body is rotated, because main piston is subject to locating part
Circumference it is spacing, main rod body end and main piston produce axial dipole field, until first UNICOM's mouth is relative with second UNICOM's mouth position
Seasonable master temporarily puts chamber and temporarily puts chamber with pair and is connected, that is, empty liquid and flow into master and temporarily puts chamber, then, promotes auxiliary piston bar, temporarily puts secondary
The emptying liquid in chamber pushes master and temporarily puts chamber, and extruding residues in that master temporarily puts chamber and syringe nipple all liquids continue to inject originally, until medicine
Liquid is all injected in patient's body, realizes the injection completely of liquid.There is advantages below in the syringe of this kind of structure：1. it is economical real
With, the injection completely due to realizing liquid increased the total injection volume of medicine, that is, increase the curative effect of medicine, at the same time, due to
The drug price of unit volume is identical, is injected into more liquids and also mitigates patient economy burden；2. safely and effectively, the back of the body is compared
What is referred in scape technology is suitable for the improvement suction method of ordinary syringe, is not in air in this kind of method syringe, that is, avoid
Due to reserving the series of problems that bubble is brought, the probability of liquid extravasation is also reduced, reduce complication of injection；3. range of application
Extensively, compare refer in background technology without dead space syringe, the syringe of this kind of structure remains the syringe nipple for installing syringe needle,
Single syringe can be applied to various injection systems, secondly, can't be limited by volume, can manufacture the pin of all size
Cylinder, meets the needs of various dose drug injection；4. it is with low cost, syringe with plastics, rubber as primary raw material, low cost
It is honest and clean, there are preferable market prospects；Conventional syringes can be upgraded by changing main piston rod；5. it is simple to operate, compare general
The step of normal injection method of cleansing pin cylinder, increase, is limited, is easy to promote and imparts knowledge to students.
The present invention is further arranged to：Described locating part is the bar blocks along main piston glide direction, described main work
Beyond the Great Wall side face is correspondingly arranged on the bar-shaped trough being adapted block-shaped with bar shaped with bar blocks.
Stretched into after bar-shaped trough by adopting above-mentioned technical proposal, bar blocks, when primary piston body turns with the relative syringe of main rod body
When dynamic, bar shaped cell wall offsets with bar blocks and prevents its primary piston body from circumferentially rotating, and then first UNICOM's mouth and second UNICOM's mouth week
Skew is produced to position, can be corresponding or staggered by both.
The present invention is further arranged to：The end of described main rod body installation main piston is provided with and is rotatably assorted with main piston
Seal, first described UNICOM's mouth is arranged on the seal.
By adopting above-mentioned technical proposal, smooth main rod body end is replaced by seal, it is to avoid first UNICOM's mouth with
Second UNICOM's mouth does not enter secondary accommodating cavity to liquid during correspondence from main accommodating cavity reverse osmosis, and so as to increase sealing property, the seal can be
The existing part with sealing function replaces, the plug commonly used in preferred medical science in the present invention.
The present invention is further arranged to：First described UNICOM's mouth is with second UNICOM's mouth in concentric with main piston center of rotation
The fan shape of setting.
By adopting above-mentioned technical proposal, first UNICOM's mouth and second UNICOM's mouth are set to into sector, are made in unit angle
The sectional area of first UNICOM's mouth and second UNICOM's mouth reaches maximum, be easy to empty liquid from secondary accommodating cavity quickly export while significantly
Increase avoids opening by mistake the rotational angle for opening.
With reference to the accompanying drawings and detailed description the invention will be further described.
Description of the drawings
Fig. 1 is the stereogram of the specific embodiment of the invention；
Fig. 2 is the sectional block diagram of the specific embodiment of the invention；
Fig. 3 is the enlarged drawing of A in Fig. 2.
Specific embodiment
As shown in Fig. 1-Fig. 3, the invention discloses a kind of emptying type syringe, including syringe 1, syringe needle 3 and main piston rod
2, the front end of syringe 1 is provided with the syringe nipple 12 for installing syringe needle, is provided with syringe 1 and temporarily puts the master of liquid and temporarily put chamber 11,
Main piston rod 2 temporarily puts the main piston 21 in chamber 11 and drives the main rod body 22 that main piston 21 is moved to constitute by sealing sliding in master, also
Including auxiliary piston bar 23, be provided with main rod body 22 and temporarily put the pair of emptying liquid and temporarily put chamber 221, auxiliary piston bar 23 by sealing sliding in
Pair is temporarily put the auxiliary piston 231 in chamber 221 and drives the secondary bar body 232 of the movement of auxiliary piston 231 to constitute, and main rod body 22 installs main piston 21
End be provided with first UNICOM's mouth 222 with the UNICOMs of Fu Zanzhiqiang 221, main piston 21 is rotated and is arranged at the end of main rod body 22 simultaneously
Second UNICOM's mouth 211 with the UNICOMs of Zhu Zanzhiqiang 11 is provided with, master temporarily puts the restricted main piston 21 of setting in chamber 11 and circumferentially rotates
Locating part, master temporarily puts chamber 11 and temporarily puts chamber 221 and be connected with pair when first UNICOM's mouth 222 is relative with the position of second UNICOM's mouth 211,
In use, the bar 2 of main piston 21 is promoted, first the main piston 21 of main rod body 22 main accommodating cavity end is pushed into into, master temporarily puts chamber
Most injecting liquid drug is to human body in 11, puts in needle cavity, at the nipple of syringe 1 and temporarily between chamber front end and main piston 21 still
There is a certain amount of liquid that cannot be released, now, rotate main rod body 22, because main piston 21 is subject to the circumference of locating part spacing,
The end of main rod body 22 produces axial dipole field with main piston 21, until first UNICOM's mouth 222 is corresponding with the position of second UNICOM's mouth 211
When master temporarily put chamber 11 and temporarily put chamber 221 and be connected with pair, that is, empty liquid and flow into master and temporarily puts chamber 11, then, promote the bar of auxiliary piston 231
23, the emptying liquid that pair temporarily puts chamber 221 is pushed into master and temporarily puts chamber 11, extruding residues in master and temporarily puts chamber 11 and the nipple of syringe 1 all originally
Liquid continues to inject, until liquid is all injected in patient's body, realizes the injection completely of liquid.The syringe of this kind of structure is deposited
In advantages below：1. economical and practical, due to realizing liquid injection completely, increased the total injection volume of medicine, that is, increase medicine
Curative effect, at the same time, because the drug price of unit volume is identical, be injected into more liquids also mitigate patient's economy bear
Load；2. safely and effectively, the improvement suction method for being suitable for ordinary syringe referred in background technology, this kind of method syringe 1 are compared
Be not in inside air, that is, avoid due to reserving the series of problems that bubble is brought, also reduce the probability of liquid extravasation, reduce
Complication of injection；3. applied range, compare refer in background technology without dead space syringe, the syringe of this kind of structure retains
Syringe 1 nipple of syringe needle is installed, single syringe 1 can be applied to various injection systems, secondly, can't be limited by volume
System, can manufacture the syringe 1 of all size, meet the needs of various dose drug injection；4. it is with low cost, syringe with plastics,
Rubber is primary raw material, with low cost, there is preferable market prospects；Conventional syringes 1 can be entered by changing the bar 2 of main piston 21
Row upgrading；5. simple to operate, it is limited to compare the step of normal injection method of common syringe 1, increase, is easy to promote and imparts knowledge to students.
Locating part is the bar blocks 111 along the glide direction of main piston 21, and the outer peripheral face of main piston 21 is corresponding with bar blocks 111 to be set
Be equipped with the bar-shaped trough 212 being adapted with the shape of bar blocks 111, bar blocks 111 are stretched into after bar-shaped trough 212, when the body of main piston 21 with
Main rod body 22 relative to syringe 1 rotate when, offset prevention its body of main piston 21 of the wall of bar-shaped trough 212 and bar blocks 111 is circumferentially rotated, and is entered
And first UNICOM's mouth 222 and the circumferential position of second UNICOM's mouth 211 produce skew, can be corresponding or staggered by both.
Main rod body 22 installs the end of main piston 21 and is provided with the seal 223 being rotatably assorted with main piston 21, and first
Port 222 is arranged on the seal 223, replaces the smooth end of main rod body 22 by seal 223, it is to avoid in first UNICOM's mouth
222 with second UNICOM's mouth 211 not to it is corresponding when liquid enter secondary accommodating cavity from main accommodating cavity reverse osmosis, so as to increase sealing property, this is close
Sealing 223 can be that the existing part with sealing function replaces, and the plug commonly used in preferred medical science in the present invention is above-mentioned
Main piston and auxiliary piston may also be employed plug.
First UNICOM's mouth 222 and second UNICOM's mouth 211 in the fan shape being arranged concentrically with the center of rotation of main piston 21, by the
One UNICOM's mouth 222 and second UNICOM's mouth 211 are set to sector, make first UNICOM's mouth 222 and second UNICOM's mouth 211 in unit angle
Sectional area reach maximum, be easy to empty liquid greatly increase while quickly export from secondary accommodating cavity and avoid opening by mistake the angle of rotation for opening
Degree.
Claims (4)
1. a kind of emptying type syringe, including syringe, syringe needle and main piston rod, described syringe front end is provided with for installing pin
The syringe nipple of head, is provided with syringe and temporarily puts the master of liquid and temporarily put chamber, and described main piston rod is temporarily put by sliding is sealed in master
The main piston in chamber and the main rod body composition of driving main piston movement, it is characterised in that：Also include auxiliary piston bar, described main rod body
Inside it is provided with and temporarily puts the pair of emptying liquid and temporarily put chamber, described auxiliary piston bar is temporarily put auxiliary piston and the driving in chamber by sliding is sealed in pair
The secondary bar body composition of auxiliary piston movement, the end of described main rod body installation main piston is provided with Fu Zanzhi chambers UNICOM first
UNICOM's mouth, described main piston rotates and is arranged at main rod body end and is provided with second UNICOM's mouth with Zhu Zanzhi chambers UNICOM, institute
The master for stating temporarily puts and arrange in chamber the locating part that restricted main piston is circumferentially rotated, described first UNICOM's mouth and second UNICOM's mouth position
Master temporarily puts chamber and temporarily puts chamber and be connected with pair when putting relative.
2. emptying type syringe according to claim 1, it is characterised in that：Described locating part is along main piston sliding side
To bar blocks, described main piston outer peripheral face is correspondingly arranged on the bar-shaped trough being adapted block-shaped with bar shaped with bar blocks.
3. emptying type syringe according to claim 1 and 2, it is characterised in that：Described main rod body installs main piston
End is provided with the seal being rotatably assorted with main piston, and first described UNICOM's mouth is arranged on the seal.
4. emptying type syringe according to claim 1 and 2, it is characterised in that：Described first UNICOM's mouth and second
Port is in the fan shape being arranged concentrically with main piston center of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075730.3A CN106620964A (en) | 2016-11-29 | 2016-11-29 | Emptying type syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075730.3A CN106620964A (en) | 2016-11-29 | 2016-11-29 | Emptying type syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106620964A true CN106620964A (en) | 2017-05-10 |
Family
ID=58814322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611075730.3A Pending CN106620964A (en) | 2016-11-29 | 2016-11-29 | Emptying type syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106620964A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875484A (en) * | 2017-11-27 | 2018-04-06 | 高玉霞 | A kind of syringe for reducing decoction residual volume |
| CN108313541A (en) * | 2018-03-22 | 2018-07-24 | 深圳捷创电子科技有限公司 | A kind of automatic syringe-type propeller and its application method |
| CN110694144A (en) * | 2019-11-19 | 2020-01-17 | 湘南学院 | Syringe with a needle |
| CN111991624A (en) * | 2018-05-03 | 2020-11-27 | 张琦 | Function conversion module for injection medical device |
| CN113413513A (en) * | 2021-05-07 | 2021-09-21 | 任楚宇 | Medical syringe with harmless treatment function |
| CN116328102A (en) * | 2023-05-31 | 2023-06-27 | 四川省医学科学院·四川省人民医院 | Injection device for diabetes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1044697A1 (en) * | 1999-04-15 | 2000-10-18 | Mac Clay, Fernando, Horacio | Disposable syringe |
| CN202505898U (en) * | 2012-03-14 | 2012-10-31 | 徐州医学院 | Injector capable of effectively reducing medicine residues |
| CN104645458A (en) * | 2015-03-06 | 2015-05-27 | 苏州贝尔一锋医疗器械有限公司 | Medicament-mixing syringe |
| CN105797241A (en) * | 2014-12-28 | 2016-07-27 | 胡春华 | A multi-cavity syringe |
| CN206499731U (en) * | 2016-11-29 | 2017-09-19 | 温州医科大学 | A kind of emptying type syringe |
-
2016
- 2016-11-29 CN CN201611075730.3A patent/CN106620964A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1044697A1 (en) * | 1999-04-15 | 2000-10-18 | Mac Clay, Fernando, Horacio | Disposable syringe |
| CN202505898U (en) * | 2012-03-14 | 2012-10-31 | 徐州医学院 | Injector capable of effectively reducing medicine residues |
| CN105797241A (en) * | 2014-12-28 | 2016-07-27 | 胡春华 | A multi-cavity syringe |
| CN104645458A (en) * | 2015-03-06 | 2015-05-27 | 苏州贝尔一锋医疗器械有限公司 | Medicament-mixing syringe |
| CN206499731U (en) * | 2016-11-29 | 2017-09-19 | 温州医科大学 | A kind of emptying type syringe |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875484A (en) * | 2017-11-27 | 2018-04-06 | 高玉霞 | A kind of syringe for reducing decoction residual volume |
| CN108313541A (en) * | 2018-03-22 | 2018-07-24 | 深圳捷创电子科技有限公司 | A kind of automatic syringe-type propeller and its application method |
| CN108313541B (en) * | 2018-03-22 | 2023-05-12 | 深圳捷创电子科技有限公司 | Automatic needle cylinder type propeller and using method thereof |
| CN111991624A (en) * | 2018-05-03 | 2020-11-27 | 张琦 | Function conversion module for injection medical device |
| CN111991624B (en) * | 2018-05-03 | 2024-01-30 | 张琦 | Function conversion module for injection medical device |
| CN110694144A (en) * | 2019-11-19 | 2020-01-17 | 湘南学院 | Syringe with a needle |
| CN113413513A (en) * | 2021-05-07 | 2021-09-21 | 任楚宇 | Medical syringe with harmless treatment function |
| CN116328102A (en) * | 2023-05-31 | 2023-06-27 | 四川省医学科学院·四川省人民医院 | Injection device for diabetes |
| CN116328102B (en) * | 2023-05-31 | 2023-08-01 | 四川省医学科学院·四川省人民医院 | Injection device for diabetes |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |