CN104382738A - Injector capable of realizing quantitative and fast suction - Google Patents
Injector capable of realizing quantitative and fast suction Download PDFInfo
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- CN104382738A CN104382738A CN201410570422.2A CN201410570422A CN104382738A CN 104382738 A CN104382738 A CN 104382738A CN 201410570422 A CN201410570422 A CN 201410570422A CN 104382738 A CN104382738 A CN 104382738A
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- piston rod
- syringe
- air bag
- suction
- air
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Abstract
The invention relates to an injector capable of realizing quantitative and fast suction. The injector comprises a needle cylinder provided with a needle head and a piston rod, wherein the end part of the piston rod is provided with a piston rod press handle, a retainer ring which is vertical to the needle cylinder and outwards extends is arranged around the needle cylinder, the retainer ring surrounds the needle cylinder for a circle, the piston rod press handle is in a round shape by using the piston rod as the circle center, an air bag is arranged between the piston rod press handle and the retainer ring, each of the two ends of the air bag is fixed with the one opposite side of the piston rod press handle and the retainer ring, the air bag surrounds the periphery of the piston rod, and is provided with an air inlet pipe and an air outlet pipe which extend to the outside, a positive-installation reverse valve is arranged in the air inlet pipe, an opposite-installation reverse valve is arranged in the air outlet pipe, the air inlet pipe only allows air to flow into the air bag, and the air outlet only allows the air to flow out of the air bag. The injector has the advantages that the air is inflated into the air bag, the effect of pushing the piston rod to move is achieved, further, the effect of sucking liquid by the needle head is achieved, the automatic control is realized, in addition, the suction speed is controlled through controlling the air inflating speed, the structure is light, ingenious and simple, and natural damage is avoided during storage.
Description
Technical field
The present invention relates to a kind of syringe of quantitatively suction fast, belong to medical instruments field.
Background technology
Syringe is a kind of common medical instruments, and syringe is made up of the foraminate syringe of front end band and the piston core bar that matches.Syringe is used for a small amount of liquid or its to be injected into region that other method cannot be close or locally extracts out from those.When core bar is extracted, liquid or gas suck from syringe front end aperture, liquid or gas are extruded when core bar pushes.Injection is called by this process of syringe and syringe needle extraction or injecting gas or liquid.
Meanwhile, syringe also has pumping function, and the most frequently used in medical matters is exactly with syringe blood drawing, for the diagnosis of disease.In the allotment of micro-medicament, use syringe pump liquid preparation, realize the transfer of liquid preparation.In a lot of experiment, first use syringe pump containing bacterium liquid or chemical agent, be then injected in solvent solution to be deployed accordingly.
Traditional syringe is all the speed of manually control and suck and injection, and artificial operating experience seems very important, and the speed of suction or injection is determined by the experience of people completely, is unfavorable for standardization control that is quantitative, constant speed completely.Such as in the allocation process of liquid preparation, directly use traditional syringe pump liquid preparation manually, be easy to careless suction excessive, processing by the liquid preparation that excessive suction comes may be a troublesome problem, consider that injection goes back to depollute to original liquid preparation band again, direct injection is lost, consider whether this liquid preparation can to environment, whether sewer pipe can be injected directly into, if not all right, also need to carry out safe handling, visible, very large use drawback is existed for the syringe that accurately cannot control the aspiration of syringe, aspirate under a lot of service condition and excessively can there is serious consequence.Such as: when aspirating blood of human body for use syringe, be used for the diagnosis of disease, it is excessive to aspirate, and for patient, is also a kind of waste of blood, does not take into full account the spirit impression of patient.
Such as in antibacterial culturing process, during transfer antibacterial, pumping velocity is too fast may affect the uniform distribution situation of antibacterial in culture fluid, and excessive velocities, local produces temperature and raises, and causes bacterial death, visible, effectively controlling the pumping velocity of syringe, is also very important.For the simple syringe of tradition, artificial experience can only be relied on, and be easy to produce error or deviation, and in antibacterial culturing, cause this error or deviation, many times be not easy to be found, and very serious consequence can be caused.
The patent No. is 201080047273.1, patent name is a kind of automatic injector, open one comprises housing (10) to hold needle tubing (14), and driving mechanism, described driving mechanism comprises the first and second springs (30,32), described spring one in front and one in back acts on plunger (42) via intermediate member (34).The plunger device that is triggered remains on latched position.Push pin pipe to parking a little before the release of trigger causes the first spring, and after this second spring stretches with discharge dosage in needle tubing.This patent discloses a kind of injection can relatively automatically discharged in accommodation needle tubing, but, wherein use two sections of springs, spring has certain use fatigue process, in actual use, use each time all can have the change of trace, cause the syringe of this patent, although achieve automatic injection, but cannot calibrated shot be realized, quantitative problem described above can not be solved, and this patent be for injection, do not provide automatic control and the fixing quantity of suction, the drawback of above-mentioned present syringe can not be solved.
Application number is 201420100766.2, patent name is automatic injector, disclose a kind of automatic injector, comprise syringe and the syringe needle being arranged on syringe front end, piston rod is provided with in described syringe, described piston rod front end is provided with piston, described syringe outer wall is provided with secondary cylinder, push pedal is provided with in described secondary cylinder, the push pedal back side is provided with spring, described push pedal is provided with push rod, described push rod is connected with piston rod by interlinked mechanism, syringe top end is provided with lock pin, described piston rod is provided with lockhole, lock pin mates with lockhole through needle cylinder wall and is connected, syringe before the use, medicinal liquid is prepared in syringe, spring in secondary cylinder is in compressive state, lock pin inserts in lockhole, during injection, syringe needle is thrust injection position, finger stirs lock pin, lock pin skids off in lockhole, under the effect of Compress Spring elastic force, push rod drives piston rod slowly evenly to advance, realize automatic injection, save manpower, improve injection efficiency.The technical problem that this patent solves does not need to press piston-rod end manually, the power transmission of being upheld by spring is to piston rod, piston rod is driven to move towards needle portion, realize not needing Manual press piston rod, but still can't resolve quantitative problem, and this patent disclose only the structure for injection, be not openly used for the syringe aspirated, can reach the function of auto-pumping and quantitatively suction yet.
Visible, solve syringe when being applied in suction, how to realize auto-pumping and quantitative suction and be still one and be not solved and disclosed problem.And in actual applications, the use utilizing syringe to carry out pumping liquid is very frequently, experience simply by virtue of user uses traditional syringe under the service condition of a lot of suction, very serious consequence can be caused, and when using traditional syringe to realize pumping function for babe in the wood, more serious afterwards, be not only the waste of raw material, the safe handling of the raw material pumped out, or even the failure of experiment more, the death etc. of bacterial strain.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention discloses a kind of syringe of quantitatively suction fast, this syringe is mainly used in the quantitative suction of liquor sample or medicament, and the blood suction of human body or other live bodies, simple to operate, practical, application is wide.
A kind of syringe of quantitatively suction fast, comprise the syringe that end winding support is provided with syringe needle, piston rod is provided with in syringe, the end being positioned at the piston rod of syringe is provided with piston, the end extending in the piston rod outside syringe is provided with piston rod pressure handle, syringe surrounding towards piston rod pressure handle one end is provided with the outward extending back-up ring vertical with syringe, it is characterized in that described back-up ring is around syringe one circle, and the width that back-up ring extends to surrounding is consistent, described piston rod pressure handle take piston rod as the round-shaped of the center of circle, air bag is provided with between described piston rod pressure handle and back-up ring, the two ends of air bag are fixed with piston rod pressure handle and back-up ring side in opposite directions respectively, described air bag is centered around piston rod surrounding, described air bag is provided with two air inlet pipe and escape pipe extended out near the part of back-up ring, the reverse valve of a formal dress is provided with in described air inlet pipe, a reverse valve instead filled is provided with in described escape pipe, described air inlet pipe only allows in gas flow air bag, described escape pipe only allows gas flow to go out air bag.
Described air bag is that HDPE material after 0.3-3mm is made by thickness.
Described air inlet pipe is consistent with air bag with the material of escape pipe, and the end of air inlet pipe and escape pipe is respectively arranged with suction nozzle and outlet nozzle, arranges a reverse valve of formal dress in described suction nozzle, arranges one and instead fill reverse valve in described outlet nozzle.
The surrounding of described suction nozzle and outlet nozzle is provided with screw thread.
Described suction nozzle and outlet nozzle are respectively arranged with lid, and lid is threaded fixing with suction nozzle and outlet nozzle.
Described airbag aeration struts the acutangulate angle of inclination of shape between rear and piston rod.
Described piston rod pressure handle equals the width of air bag at the width that piston rod surrounding extends.
Operation principle of the present invention is:
1. piston rod presses down: piston rod presses down, and piston moves near syringe needle direction, and the gas of carrying in air bag is discharged by outlet nozzle, and final air bag is empty flat state, and piston is pressed onto the end of syringe.
2. syringe needle inserts in liquid: syringe needle is inserted the degree of depth suitable in liquid, guarantee in pumping liquid process of the present invention, syringe needle can not spill from liquid, avoid in aspiration procedure, liquid level reduces, syringe needle spills from liquid, causes withdrawing air, does not reach application target of the present invention.
3. give airbag aeration: by the aerating device of a constant speed, such as small-sized gasing tank, inflated in air bag by charging connector, air bag slowly swells, air bag swells in process, to piston rod pressure handle produce thrust, piston rod slowly from syringe by pull out, syringe needle just can pumping liquid in liquid again, and liquid enters in syringe.
4. stop inflation: after air bag is inflated and heaves, piston rod moves suitable distance, and air bag is heaved completely, and the distance that piston rod is pushed movement reaches capacity, and completes pumping function, and the amount of liquid of suction is determined by the height of air bag.
Beneficial effect of the present invention is:
(1), simple to operate: realize controlling personal experience can only be relied on to complete the problem of pumping liquid in medical treatment or experiment at ordinary times by the simple means of inflating and exit, allow the suction of syringe realize the control that quantizes, it is more accurate to control.
(2), fixing quantity: the present invention is easy to just can realize fixing quantity, different syringes, and syringe in different applications, need the amount of the liquid aspirating not identical, according to different height, different air bag height can be designed, after ensureing airbag aeration, after heaving completely, the height that can promote piston rod movement equals the mobile height needing to aspirate quantitative liquid needs.
(3), compact structure: in the present invention, piston rod pressure handle equals the width of air bag at the width that piston rod surrounding extends, and air bag is fixed between piston rod pressure handle and back-up ring, air bag and piston rod relative tilt.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 is the A place enlarged drawing of Fig. 1,
Reference numerals list: 1-syringe needle, 2-syringe, 3-piston rod, 4-piston, 5-back-up ring, 6-piston rod pressure handle, 7-air bag, 8-air inlet pipe, 9-escape pipe, 10-suction nozzle, 11-outlet nozzle.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.Following detailed description of the invention should be understood only be not used in for illustration of the present invention and limit the scope of the invention.It should be noted that, the word "front", "rear" of use is described below, "left", "right", "up" and "down" refer to direction in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometric center respectively.
Fig. 1 is structural representation of the present invention, visible by reference to the accompanying drawings, this syringe quantitatively aspirated fast, comprise the syringe 2 that end winding support is provided with syringe needle 1, piston rod 3 is provided with in syringe 2, the end being positioned at the piston rod 3 of syringe 2 is provided with piston 4, the end extending in the piston rod 3 outside syringe 2 is provided with piston rod pressure handle 6, syringe surrounding towards piston rod pressure handle 6 one end is provided with the outward extending back-up ring 5 vertical with syringe 2, described back-up ring 5 encloses around syringe 2 one, and the width that back-up ring 5 extends to surrounding is consistent, described piston rod pressure handle 6 is, and to be the center of circle with piston rod 3 round-shaped, air bag 7 is provided with between described piston rod pressure handle 6 and back-up ring 5, the two ends of air bag 7 are fixed with piston rod pressure handle 6 and back-up ring 5 side in opposite directions respectively, described air bag 7 is centered around piston rod 3 surrounding, described air bag 7 is provided with two air inlet pipe extended out 8 and escape pipe 9 near the part of back-up ring 5, the reverse valve of a formal dress is provided with in described air inlet pipe 8, a reverse valve instead filled is provided with in described escape pipe 9, described air inlet pipe 8 allows in gas flow air bag 7, described escape pipe 9 allows gas flow to go out air bag 7.Air inlet pipe 8 and escape pipe 9 control uniaxially respectively and inflate in air bag 7 or exit, and are realized the one-way flow of gas by formal dress and the anti-dress of reverse valve.
Described air bag 7 is that HDPE material after 0.3-3mm is made by thickness.The present invention it is possible to Free Transform for the requirement of air bag 7, and after in air bag 7, gas runs out, air bag 7 is empty flat, and piston rod 3 can move towards syringe needle 1 direction in syringe 2, not by the impact of air bag 7.After air bag 7 is inflated, air bag 7 pairs of piston rod pressure handles 6 have powerful thrust, and air bag 7 can not contain gas and elastic deformation because of therein, affects the thrust of air bag 7 pairs of piston rod pressure handles 6.
Air inlet pipe 8 is consistent with air bag 7 with the material of escape pipe 9, and can effectively prevent in inflation or deflation course, suction nozzle 10 and outlet nozzle 11 pairs of air bags 7 produce fretting wear; The end of air inlet pipe 8 and escape pipe 9 is respectively arranged with suction nozzle 10 and outlet nozzle 11, a reverse valve of formal dress is set in described suction nozzle 10, the reverse valve of formal dress only allows in gas flow air bag 7, arranges one and instead fill reverse valve in outlet nozzle 11, instead fills reverse valve and only allows gas flow to go out air bag 7; Thus realization inflation and venting in air bag 7 are all independent controls.
The surrounding of described suction nozzle 10 and outlet nozzle 11 is provided with screw thread, and suction nozzle 10 and outlet nozzle 11 are respectively arranged with lid, and lid is threaded fixing with suction nozzle 10 and outlet nozzle 11.The present invention, under not using state, by lid suction nozzle 10 and outlet nozzle 11, effectively prevents magazine blocking suction nozzle 10 and the outlet nozzles 11 such as dust, also avoids the reverse valve of air corrosion.
Described air bag 7 inflation struts the acutangulate angle of inclination of shape between rear and piston rod 3, and piston rod pressure handle 6 equals the width of air bag 7 at the width that piston rod 3 surrounding extends.Save the material of piston rod pressure handle 6, reduce thrust piston bar 3 when moving, need the power overcome, thus alleviate air bag 7 to promotion piston rod pressure handle 6 drive piston rod 3 together with piston 4 mobile constantly, need the thrust provided, the resistance that the work alleviating air bag 7 overcomes.
The present invention as required syringe needs the amount of quantitatively suction, can promote the distance of piston rod movement after design an inflation, and realize after each air bag is full of gas, the distance of air bag promotion piston rod movement is fixing, realizes syringe and quantitatively aspirates.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic combination in any.
Claims (7)
1. the syringe quantitatively aspirated fast, comprise the syringe that end winding support is provided with syringe needle, piston rod is provided with in syringe, the end being positioned at the piston rod of syringe is provided with piston, the end extending in the piston rod outside syringe is provided with piston rod pressure handle, syringe surrounding towards piston rod pressure handle one end is provided with the outward extending back-up ring vertical with syringe, it is characterized in that described back-up ring is around syringe one circle, and the width that back-up ring extends to surrounding is consistent, described piston rod pressure handle take piston rod as the round-shaped of the center of circle, air bag is provided with between described piston rod pressure handle and back-up ring, the two ends of air bag are fixed with piston rod pressure handle and back-up ring side in opposite directions respectively, described air bag is centered around piston rod surrounding, described air bag is provided with two air inlet pipe and escape pipe extended out near the part of back-up ring, the reverse valve of a formal dress is provided with in described air inlet pipe, a reverse valve instead filled is provided with in described escape pipe, described air inlet pipe only allows in gas flow air bag, described escape pipe only allows gas flow to go out air bag.
2. the syringe of a kind of quantitatively fast suction according to claim 1, is characterized in that described air bag is that HDPE material after 0.3-3mm is made by thickness.
3. the syringe of a kind of quantitatively suction fast according to claim 2, it is characterized in that described air inlet pipe is consistent with air bag with the material of escape pipe, the end of air inlet pipe and escape pipe is respectively arranged with suction nozzle and outlet nozzle, a reverse valve of formal dress is set in described suction nozzle, arranges one in described outlet nozzle and instead fill reverse valve.
4. the syringe of a kind of quantitatively suction fast according to claim 3, is characterized in that the surrounding of described suction nozzle and outlet nozzle is provided with screw thread.
5. the syringe of a kind of quantitatively suction fast according to claim 4, it is characterized in that described suction nozzle and outlet nozzle are respectively arranged with lid, lid is threaded fixing with suction nozzle and outlet nozzle.
6. the syringe of a kind of quantitatively suction fast according to claim 1, is characterized in that described airbag aeration struts the acutangulate angle of inclination of shape between rear and piston rod.
7. the syringe of a kind of quantitatively suction fast according to claim 1, is characterized in that described piston rod pressure handle equals the width of air bag at the width that piston rod surrounding extends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570422.2A CN104382738B (en) | 2014-10-24 | 2014-10-24 | Injector capable of realizing quantitative and fast suction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570422.2A CN104382738B (en) | 2014-10-24 | 2014-10-24 | Injector capable of realizing quantitative and fast suction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104382738A true CN104382738A (en) | 2015-03-04 |
| CN104382738B CN104382738B (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410570422.2A Expired - Fee Related CN104382738B (en) | 2014-10-24 | 2014-10-24 | Injector capable of realizing quantitative and fast suction |
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| CN (1) | CN104382738B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108542436A (en) * | 2018-05-21 | 2018-09-18 | 北京大学 | A kind of aspirating syringe and its control method of quantitative pumping liquid |
| CN111904856A (en) * | 2020-08-06 | 2020-11-10 | 浙江灵洋医疗器械有限公司 | Medical medicine dispenser |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0689847A1 (en) * | 1994-07-01 | 1996-01-03 | Becton, Dickinson and Company | Syringe assembly |
| CN2496468Y (en) * | 2001-04-09 | 2002-06-26 | 孙刚 | Air-bag type boosting device |
| CN1226057C (en) * | 2002-11-01 | 2005-11-09 | 杨章民 | Syringe injector |
| CN201070484Y (en) * | 2007-06-19 | 2008-06-11 | 李长玲 | Air-intake preventing injector |
| CN101264359B (en) * | 2008-04-29 | 2012-02-01 | 陈庆强 | Automatic resorption type antipollution medicine adding syringe |
| CN201182799Y (en) * | 2008-04-07 | 2009-01-21 | 魏陶军 | Assistor for intravenous injection |
| CN201537291U (en) * | 2009-12-04 | 2010-08-04 | 薛红 | Injector |
| CN201684249U (en) * | 2010-01-29 | 2010-12-29 | 亓仲亮 | Air pressure boosting liquid medicine injector |
| CN201710753U (en) * | 2010-06-24 | 2011-01-19 | 西南石油大学 | Novel medical injector |
| CN203861697U (en) * | 2014-03-06 | 2014-10-08 | 中国人民解放军第三军医大学第一附属医院 | Automatic injector |
-
2014
- 2014-10-24 CN CN201410570422.2A patent/CN104382738B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108542436A (en) * | 2018-05-21 | 2018-09-18 | 北京大学 | A kind of aspirating syringe and its control method of quantitative pumping liquid |
| CN108542436B (en) * | 2018-05-21 | 2023-04-28 | 北京大学 | Suction injector for quantitatively sucking liquid and control method thereof |
| CN111904856A (en) * | 2020-08-06 | 2020-11-10 | 浙江灵洋医疗器械有限公司 | Medical medicine dispenser |
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| Publication number | Publication date |
|---|---|
| CN104382738B (en) | 2017-02-15 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Feng Weiming Inventor after: Wei Bingqing Inventor after: Yang Shibin Inventor after: Zhou Yueming Inventor after: Zou Menbing Inventor after: Fan Zhihua Inventor after: Zheng Xiang Inventor after: Qin Huarong Inventor after: Wei Anji Inventor after: Pang Liping Inventor after: Chen Nianen Inventor after: Qin Man Inventor after: Long Yi Inventor after: Luo Fangjie Inventor after: Chen Mengjie Inventor after: Ning Youli Inventor after: Liang Bo Inventor after: Liang Yi Inventor after: Tan Bitong Inventor before: Luo Xianjun |
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Effective date of registration: 20170113 Address after: 537000 the Guangxi Zhuang Autonomous Region Yulin Second People''s Hospital Applicant after: Feng Weiming Applicant after: Wei Bingqing Applicant after: Yang Shibin Applicant after: Zhou Yueming Applicant after: Zou Menbing Applicant after: Fan Zhihua Applicant after: Zheng Xiang Applicant after: Qin Huarong Applicant after: Wei Anji Applicant after: Pang Liping Applicant after: Chen Nianen Applicant after: Qin Man Applicant after: Long Yi Applicant after: Luo Fangjie Applicant after: Chen Mengjie Applicant after: Ning Youli Applicant after: Liang Bo Applicant after: Liang Yi Applicant after: Tan Bitong Address before: Zhongshan road Wuzhong District Mudu town of Suzhou city in Jiangsu province 215100 No. 70 room 3610 Applicant before: SUZHOU RENJIERUI AUTOMATION TECHNOLOGY CO., LTD. |
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Granted publication date: 20170215 Termination date: 20171024 |