CN105816325B - It is mostly used anti-vacuum injector and its application method - Google Patents
It is mostly used anti-vacuum injector and its application method Download PDFInfo
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- CN105816325B CN105816325B CN201610176028.XA CN201610176028A CN105816325B CN 105816325 B CN105816325 B CN 105816325B CN 201610176028 A CN201610176028 A CN 201610176028A CN 105816325 B CN105816325 B CN 105816325B
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- needle
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- hollow pipe
- short tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2006—Piercing means
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- Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses multi-purpose anti-vacuum injector and its application methods, including syringe body, syringe body front end to be equipped with syringe needle, it is characterized in that：It further include the anti-negative pressure device of Y-shaped structure, anti- negative pressure device includes trunk hollow pipe and side hollow short tube, trunk hollow pipe is connected with side hollow short tube, the rear end of trunk hollow pipe removably seals and is set in syringe body front end, trunk hollow pipe front end is equipped with thread a needle hole and venthole, and needle tip is pierced by from hole of threading a needle, and needle housing is removably arranged with outside the front end of trunk hollow pipe, needle housing covers syringe needle, and the front end of needle housing is provided with through-hole；The outer end of side hollow short tube connects conversion valve, and conversion valve can seal side hollow short tube when closing.The present invention has the advantages that apply on curved neck easy breaking ampule and negative-pressure vacuum ampoule, is not easy to accidentally injure finger, is easy to operate.
Description
Technical field
The invention belongs to the field of medical instrument technology, more particularly to are mostly used anti-vacuum injector and its application method.
Background technology
Currently, syringe is to be used to acquire, dilute, configure liquid drug, reagent etc. in medical institutions, laboratory to use
Common instrument.Ampoule inner liquid medicine is acquired, common operation method is that makers-up's left hand holds ampoule, and right hand syringes are bent when extracting
When neck easy cut ampule inner liquid medicine, after needle tip is directed at ampoule bottleneck, it is placed in needle body, and aspiration medicinal liquid；When extracting, negative pressure is true
When empty ampoule inner liquid medicine, then aspirated after needle tip being directly pierced into bottle stopper.Since curved neck easy breaking ampule bottleneck diameter is logical
It is often smaller, when being placed in syringe needle, once direction is deviated, it is easy to accidentally injure finger.And negative-pressure vacuum ampoule external and internal pressure
For it is interior it is negative outer just and pressure gradient is larger, usually suction is very difficult, considerably increases the time of acquisition liquid, while also making
At the fatigue of operator's hand, skin damage even tendon chronic strain can be caused for a long time.
Before making the present invention, operator is when acquiring curved neck easy breaking ampule inner liquid medicine, it is necessary to concentrate, and be placed in syringe needle
When slow down, reduce picking rate while safety is ensured to avoid needle stick injuries, easily cause visual fatigue.
And when acquiring negative-pressure vacuum ampoule inner liquid medicine, for this problem of solution extraction difficult, usually first noted into negative-pressure vacuum ampoule
Enter appropriate air, neutralizes in bottle after negative pressure, then liquid is slowly extracted out.When injecting air to negative-pressure vacuum ampoule, such as inject
Air capacity is very few, fails complete neutralization negative pressure, and suction remains unchanged difficult；Such as inject that air is excessive, although difficulty when reducing suction
Degree, but due to so that pressure is much higher than outside ampoule in ampoule, can have liquid from syringe needle and bottle stopper gap water clock even
A large amount of sprinkling outflows, cause the loss and waste of liquid.
Invention content
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of can apply to pacify in curved neck easy breaking
On small jar and negative-pressure vacuum ampoule, it is not easy to accidentally injure finger, easy to operate multi-purpose anti-vacuum injector and its application method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
It is mostly used anti-vacuum injector, including syringe body, syringe body front end are equipped with syringe needle, it is characterized in that：Also
Anti- negative pressure device including Y-shaped structure, anti-negative pressure device include trunk hollow pipe and side hollow short tube, trunk hollow pipe and
Side hollow short tube is connected, and the rear end of trunk hollow pipe, which removably seals, is set in syringe body front end, and trunk is hollow
Pipe front end is equipped with thread a needle hole and venthole, and needle tip is pierced by from hole of threading a needle, is removably covered outside the front end of trunk hollow pipe
Equipped with needle housing, needle housing covers syringe needle, and the front end of needle housing is provided with through-hole；The outer end of side hollow short tube connects conversion valve, turns
Side hollow short tube can be sealed by changing when valve is closed.
To optimize above-mentioned technical proposal, the concrete measure taken further includes：
Check valve is additionally provided in above-mentioned anti-negative pressure device, check valve allows air to flow to trunk sky from conversion valve
Heart pipe front end, it is on the contrary then do not allow.
Above-mentioned conversion valve is fixedly connected with side hollow short tube by thread seal.
Above-mentioned conversion valve includes converting valve seat and the conversion spool on conversion valve seat, and conversion spool is equipped with
Venting channels convert Spool rotating, and when venting channels being made not to be connected to side hollow short tube, conversion valve is in off state, and turn
Spool rotating is changed, when venting channels being made to be connected to side hollow short tube, conversion valve is open state.
The front end of above-mentioned trunk hollow pipe is sharp.
Above-mentioned check valve includes one-way valve seat and inner elements of check valve, and inner elements of check valve can be opened and closed to cover in one-way valve
In the perforation at seat middle part, inner elements of check valve is located at side of the one-way valve seat close to trunk hollow pipe front end.
Above-mentioned check valve is fixed in the hollow short tube of side.
Above-mentioned needle housing front end round blunt is soft.
The material of above-mentioned needle housing is silica gel.
A kind of application method being mostly used anti-vacuum injector, includes the following steps：
Step a：Acquire curved neck easy breaking ampule inner liquid medicine：It is easy that the syringe needle for being equipped with needle housing is entirely inserted into the bent neck opened
It rolls in ampoule, the liquid in curved neck easy breaking ampule is made to be diffused in needle housing through through-hole, and liquid submerges needle tip, keep conversion
Valve is closed, and is twitched syringe body, is made syringe needle aspiration medicinal liquid, after the completion of suction, will be equipped with the syringe needle of needle housing
It is exited out of curved neck easy breaking ampule, then needle housing and anti-negative pressure device is removed from syringe body；
Step b：Acquire negative-pressure vacuum ampoule inner liquid medicine：Needle housing is removed from the front end of trunk hollow pipe, then by syringe needle
It is inserted into negative-pressure vacuum ampoule and trunk hollow pipe fore-end enters in negative-pressure vacuum ampoule, needle tip is made to be submerged by liquid,
Venthole accesses in negative-pressure vacuum ampoule, while not touching liquid；Conversion valve is opened, makes air through side hollow short tube, list
To after valve, trunk hollow pipe, enter in negative-pressure vacuum ampoule from venthole, negative-pressure vacuum ampoule air pressure inside rises to and the external world
After consistent, syringe body is twitched, makes syringe needle aspiration medicinal liquid, in suction process, air continues into negative-pressure vacuum ampoule, makes to bear
Press vacuum ampoule in stable gas pressure, after the completion of suction, syringe needle is exited out of curved neck easy breaking ampule, then by anti-negative pressure device from
It is removed in syringe body.
Advantages of the present invention and effect be to be suitable for curved neck easy breaking ampule and negative pressure of vacuum ampoule simultaneously, when use according to
Acquisition liquid ampoule type difference is assembled, easy to operate, need not specially or special training and experience.The letter of its structure
It is single, at low cost, easy to use, reliable.When disposing silica gel needle housing, for aspirating curved neck easy breaking ampule inner liquid medicine；It is mini turn open
When changing valve and removing needle housing, it is used for suction vacuum ampoule inner liquid medicine, solves the current most common peace of world's both the above
The problem of the safety and simplification of the acquisition of small jar inner liquid medicine.
Description of the drawings
Fig. 1 is the external structure schematic diagram of the present invention；
Fig. 2 is the internal structure sectional view of the present invention；
Fig. 3 is the portions the A schematic enlarged-scale view of Fig. 2；
Fig. 4 and Fig. 5 is the schematic diagram for acquiring negative-pressure vacuum ampoule inner liquid medicine.
Reference numeral therein is：Syringe body 1, syringe needle 2, anti-negative pressure device 3, trunk hollow pipe 31, venthole
31a, side hollow short tube 32, needle housing 4, through-hole 41, conversion valve 5, conversion valve seat 51, conversion spool 52, venting channels 52a,
Check valve 6.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to technical scheme of the present invention.
The present invention's is mostly used anti-vacuum injector, including syringe body 1,1 front end of syringe body are equipped with syringe needle 2,
It is characterized in that：Further include the anti-negative pressure device 3 of Y-shaped structure, anti-negative pressure device 3 includes that trunk hollow pipe 31 and side hollow are short
Pipe 32, long 4-6 centimetres of trunk hollow pipe 31, the present embodiment take 5 centimetres, and hollow short tube 32 length in side takes 1 centimetre, and internal diameter takes
0.2 centimetre, outer diameter takes 0.4 centimetre；Trunk hollow pipe 31 is connected with side hollow short tube 32, and trunk hollow pipe 31 and side are empty
Angle between core short tube 32 is 70 °, and the rear end of trunk hollow pipe 31, which removably seals, is set in 1 front end of syringe body,
31 front end of trunk hollow pipe is equipped with thread a needle hole and venthole 31a, and 2 front end of syringe needle is pierced by from hole of threading a needle, before trunk hollow pipe 31
End is external to be removably arranged with needle housing 4, and needle housing 4 covers syringe needle 2, and 4 front end of needle housing grows about 0.3 centimetre of syringe needle 2, needle housing 4
Front end be provided with through-hole 41；The outer end of side hollow short tube 32 connects conversion valve 5, can sealed sides when conversion valve 5 is closed
Side hollow short tube 32.Conversion valve 5 is the mini conversion valve of detachable plastic, 2 centimetres of mini conversion valve length in this example.
In embodiment, check valve 6 is additionally provided in anti-negative pressure device 3, check valve 6 allows air to be flowed from conversion valve 5
It is on the contrary then do not allow to 31 front end of trunk hollow pipe.
In embodiment, conversion valve 5 is fixedly connected with side hollow short tube 32 by thread seal.
In embodiment, conversion valve 5 includes conversion valve seat 51 and the conversion spool 52 on conversion valve seat 51, conversion
Spool 52 is equipped with venting channels 52a, and conversion spool 52 rotates, when venting channels 52a being made not to be connected to side hollow short tube 32,
Conversion valve 5 is in off state, and conversion spool 52 rotates, when venting channels 52a being made to be connected to side hollow short tube 32, switching valve
Door 5 is open state.
In embodiment, the front end of trunk hollow pipe 31 is sharp.
In embodiment, check valve 6 includes one-way valve seat and inner elements of check valve, and inner elements of check valve can be opened and closed to cover unidirectional
In perforation in the middle part of valve base, inner elements of check valve is located at side of the one-way valve seat close to 31 front end of trunk hollow pipe.
In embodiment, check valve 6 is fixed in side hollow short tube 32.
In embodiment, 4 front end round blunt of needle housing is soft.
In embodiment, the material of needle housing 4 is silica gel.
A kind of application method being mostly used anti-vacuum injector, includes the following steps：
Step a：Acquire curved neck easy breaking ampule inner liquid medicine：The syringe needle 2 for being equipped with needle housing 4 is entirely inserted into the bent neck opened
In easy cut ampule, the liquid in curved neck easy breaking ampule is made to be diffused in needle housing 4 through through-hole 41, and 2 front end of liquid submergence syringe needle, protected
It holds conversion valve 5 to be closed, twitches syringe body 1, make 2 aspiration medicinal liquid of syringe needle, after the completion of suction, needle will be installed
The syringe needle 2 of cover 4 is exited out of curved neck easy breaking ampule, then needle housing 4 and anti-negative pressure device 3 are removed from syringe body 1；
When acquiring curved neck easy breaking ampule inner liquid medicine, the syringe needle 2 that outer wall is cased with silica gel needle housing 4 can easily be inserted into ampoule bottom
It is aspirated, and front end round blunt is soft, even if be directed at ampoule rapidly, deviation occurs, be not easy to that needle thorn is caused to accidentally injure, and according to
Ampoule bottle height is short, and the syringe needle 2 that different length may be selected is matched.
Step b：Acquire negative-pressure vacuum ampoule inner liquid medicine：By 5 upper end of conversion valve dismounting cap removal, by needle housing 4 from trunk
The front end of hollow pipe 31 removes, and syringe needle 2 is then inserted into negative-pressure vacuum ampoule and 31 fore-end of trunk hollow pipe enters negative pressure
In vacuum ampoule, 2 front end of syringe needle is made to be submerged by liquid, in venthole 31a access negative-pressure vacuum ampoules, while not touching liquid；
Conversion valve 5 is opened, makes air after side hollow short tube 32, check valve 6, trunk hollow pipe 31, is entered from venthole 31a negative
Press in vacuum ampoule, negative-pressure vacuum ampoule air pressure inside rise to it is extraneous consistent after, twitch syringe body 1, syringe needle 2 made to take out
Liquid is inhaled, in suction process, air continues into negative-pressure vacuum ampoule, and stable gas pressure in negative-pressure vacuum ampoule, suction is made to complete
Afterwards, syringe needle 2 is exited out of curved neck easy breaking ampule, then anti-negative pressure device 3 is removed from syringe body 1.The present invention's
Silica gel needle housing 4 is bonded appropriately with syringe needle 2, is also matched between conversion valve 5 and hollow short tube 4 closely, is given each method aspiration medicinal liquid
Shi Junwu dead space capacities are detained or water clock.Clinical test results are shown：Syringe inner liquid medicine capacity=ampoule mark after acquisition
Liquid capacity.
The current size of syringe of the present invention is applicable in most of curved neck easy breaking ampules and negative-pressure vacuum ampoule.With with it is common
The almost the same advantage of injector operations method, and overcome many unfavorable disadvantages possessed by different syringes.The present invention
In application, its acquisition liquid is accurate, and it is easy to operate, it is not easy to accidentally injure operator.The statistic analysis result prompt of clinical application causes
Needle thorn sharp weapon are hindered incidence and are decreased obviously.Acquisition negative pressure of vacuum ampoule inner liquid medicine speed significantly improves, and acquires liquid dose essence
Standard, it is consistent with ampoule mark capacity.When being particularly suitable for promptly configuring liquid, the suction of negative-pressure vacuum ampoule inner liquid medicine.No matter
Ward, outpatient service, operating room, no matter healthcare structure or R＆D institution, the syringe can be used.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Range.
Claims (8)
1. being mostly used the application method of anti-vacuum injector, wherein it is mostly used anti-vacuum injector, including syringe body (1), it is described
Syringe body (1) front end syringe needle (2) is installed, it is characterized in that：Further include the anti-negative pressure device (3) of Y-shaped structure, it is described
Anti- negative pressure device (3) include trunk hollow pipe (31) and side hollow short tube (32), the trunk hollow pipe (31) and side
Side hollow short tube (32) is connected, and the rear end of the trunk hollow pipe (31), which removably seals, is set in syringe body
(1) front end, described trunk hollow pipe (31) front end are equipped with and thread a needle hole and venthole (31a), and the syringe needle (2) front end is from wearing
Pin hole is pierced by, and needle housing (4), the needle housing (4) cover are removably arranged with outside the front end of the trunk hollow pipe (31)
The front end of firmly syringe needle (2), the needle housing (4) is provided with through-hole (41)；The outer end of the side hollow short tube (32) connects
Conversion valve (5), the conversion valve (5) can seal side hollow short tube (32) when closing；The anti-negative pressure device (3)
It is inside additionally provided with check valve (6), the check valve (6) allows air to flow to trunk hollow pipe (31) at conversion valve (5)
Front end, on the contrary then do not allow, the application method for being mostly used anti-vacuum injector includes the following steps：
Step a：Acquire curved neck easy breaking ampule inner liquid medicine：The syringe needle (2) for being equipped with needle housing (4) is entirely inserted into the bent neck opened
In easy cut ampule, the liquid in curved neck easy breaking ampule is made to be diffused in needle housing (4) through through-hole (41), and liquid submergence syringe needle (2)
Front end keeps conversion valve (5) to be closed, and twitches syringe body (1), and syringe needle (2) aspiration medicinal liquid, suction is made to complete
Afterwards, the syringe needle (2) for being equipped with needle housing (4) is exited out of curved neck easy breaking ampule, then by needle housing (4) and anti-negative pressure device (3)
Removed from syringe body (1)；
Step b：Acquire negative-pressure vacuum ampoule inner liquid medicine：Needle housing (4) is removed from the front end of trunk hollow pipe (31), then by needle
Head (2) is inserted into negative-pressure vacuum ampoule and trunk hollow pipe (31) fore-end enters in negative-pressure vacuum ampoule, before making syringe needle (2)
End is submerged by liquid, and venthole (31a) accesses in negative-pressure vacuum ampoule, while not touching liquid；Conversion valve (5) is opened, is made
Air is pacified after side hollow short tube (32), check valve (6), trunk hollow pipe (31) from venthole (31a) into negative-pressure vacuum
In small jar, negative-pressure vacuum ampoule air pressure inside rise to it is extraneous consistent after, twitch syringe body (1), syringe needle (2) made to aspirate medicine
Liquid, in suction process, air continues into negative-pressure vacuum ampoule, makes stable gas pressure in negative-pressure vacuum ampoule, will after the completion of suction
Syringe needle (2) is exited out of negative-pressure vacuum ampoule, then anti-negative pressure device (3) is removed from syringe body (1).
2. the application method according to claim 1 for being mostly used anti-vacuum injector, it is characterized in that：The conversion valve
(5) it is fixedly connected by thread seal with side hollow short tube (32).
3. the application method according to claim 2 for being mostly used anti-vacuum injector, it is characterized in that：The conversion valve
(5) include converting valve seat (51) and the conversion spool (52) on conversion valve seat (51), on the conversion spool (52)
Equipped with venting channels (52a), the conversion spool (52) rotation makes venting channels (52a) and side hollow short tube (32) no
When connection, conversion valve (5) is in off state, and conversion spool (52) rotates, and makes venting channels (52a) and side hollow short tube
(32) when being connected to, conversion valve (5) is open state.
4. the application method according to claim 3 for being mostly used anti-vacuum injector, it is characterized in that：The trunk hollow pipe
(31) front end is sharp.
5. the application method according to claim 4 for being mostly used anti-vacuum injector, it is characterized in that：The check valve (6)
Including one-way valve seat and inner elements of check valve, the inner elements of check valve can be opened and closed to cover the perforation in the middle part of one-way valve seat
On, the inner elements of check valve is located at side of the one-way valve seat close to trunk hollow pipe (31) front end.
6. the application method according to claim 5 for being mostly used anti-vacuum injector, it is characterized in that：The check valve (6)
It is fixed in side hollow short tube (32).
7. the application method according to claim 6 for being mostly used anti-vacuum injector, it is characterized in that：Before the needle housing (4)
Hold round blunt soft.
8. the application method according to claim 7 for being mostly used anti-vacuum injector, it is characterized in that：The needle housing (4)
Material is silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176028.XA CN105816325B (en) | 2016-03-25 | 2016-03-25 | It is mostly used anti-vacuum injector and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176028.XA CN105816325B (en) | 2016-03-25 | 2016-03-25 | It is mostly used anti-vacuum injector and its application method |
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| Publication Number | Publication Date |
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| CN105816325A CN105816325A (en) | 2016-08-03 |
| CN105816325B true CN105816325B (en) | 2018-09-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755709A (en) * | 1996-04-25 | 1998-05-26 | Cuppy; Michael J. | Catheter system for percutaneously introducing a liquid |
| CN101229400A (en) * | 2008-01-29 | 2008-07-30 | 王维文 | Medicine feeder |
| CN201283133Y (en) * | 2008-11-17 | 2009-08-05 | 徐百香 | Needle for dispensing |
| CN204864016U (en) * | 2015-08-27 | 2015-12-16 | 郑州人民医院 | Syringe |
| CN206007723U (en) * | 2016-03-25 | 2017-03-15 | 南京大学医学院附属鼓楼医院 | Multiplex anti-vacuum injector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2335163T3 (en) * | 1997-07-30 | 2010-03-22 | Cook Incorporated | FLOW CONTROL VALVE FOR MEDICAL FLUIDS. |
-
2016
- 2016-03-25 CN CN201610176028.XA patent/CN105816325B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755709A (en) * | 1996-04-25 | 1998-05-26 | Cuppy; Michael J. | Catheter system for percutaneously introducing a liquid |
| CN101229400A (en) * | 2008-01-29 | 2008-07-30 | 王维文 | Medicine feeder |
| CN201283133Y (en) * | 2008-11-17 | 2009-08-05 | 徐百香 | Needle for dispensing |
| CN204864016U (en) * | 2015-08-27 | 2015-12-16 | 郑州人民医院 | Syringe |
| CN206007723U (en) * | 2016-03-25 | 2017-03-15 | 南京大学医学院附属鼓楼医院 | Multiplex anti-vacuum injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105816325A (en) | 2016-08-03 |
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