CN203090103U - Metering type injector - Google Patents
Metering type injector Download PDFInfo
- Publication number
- CN203090103U CN203090103U CN 201320008548 CN201320008548U CN203090103U CN 203090103 U CN203090103 U CN 203090103U CN 201320008548 CN201320008548 CN 201320008548 CN 201320008548 U CN201320008548 U CN 201320008548U CN 203090103 U CN203090103 U CN 203090103U
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- China
- Prior art keywords
- injection
- liquid
- metering
- compression chamber
- measuring device
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- Expired - Fee Related
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Abstract
The utility model relates to a metering type injector. The air is utilized to push liquid in a compressing bag to flow so as to drive a piston to move in an injection cavity body to push liquid medicine in the injection cavity body to be injected through an injection outlet. After the injection is finished, new liquid medicine is injected to the injection cavity body from a liquid medicine compensating port to push the piston to return, the liquid enters the compressing bag again through a flow metering device, the compressing bag is restored from deformation, primary injection is finished, injection is carried out repeatedly, and the purpose of accurately and continuously injecting medicine in a timing and quantitative mode can be achieved. The metering type injector is simple in structure, safe, reliable, long in service life, low in manufacturing cost and capable of effectively reducing market price and widening using range.
Description
Technical field
This utility model relates to the injection device that medicine is injected in a kind of accurate measurement automatically.
Background technology
At present, many clinical diseases are to inject by medicine to treat, as diabetes, the injection of medicine needs to inject at regular time and quantity according to the physiological law of the occurrence regularity of disease and human body is round-the-clock, guarantee the homergy balance of body, reduce the outbreak probability of complication, Given this, a kind of can be regularly, quantitative and portable syringe just becomes the key of injection of drug.
The injection instrument that occurs on the world, the domestic market, it normally directly promotes injection ram by spring mechanical power and motor power as power source and injects, and the instrument preparation cost is higher, complex structure, volume is unsuitable for greatly carrying, and injected dose control inaccuracy.
The utility model content
In order to overcome the existing deficiency of syringe of the prior art, this utility model provides a kind of drug dose control accurate, simple in structure, the metering-type syringe that cost is less.
This utility model solves the problems of the technologies described above the technical scheme that is adopted: be provided with the effusion meter measuring device between liquid compression chamber and liquid infusion chamber;
The liquid compression chamber is that the end at compression chamber has air inlet, is provided with the compressed bag of carrying liquid in the compression chamber, and the liquid outlet of compressed bag links by the inlet of conduit and effusion meter measuring device;
The liquid infusion chamber is to have injection outlet and medicinal liquid compensating port on the injection cavity, being provided with in the injection cavity can be along cavity inner wall reciprocating injection ram in the injection cavity, one side of injection ram is provided with the hollow piston bar, and the liquid outlet of the other end of hollow piston bar and effusion meter measuring device links.
Above-mentioned compressed bag is a rubber bag.
The edge of above-mentioned injection ram is provided with sealing ring.
Metering-type syringe of the present utility model is by the liquid flow in the gas promotion compressed bag, drive piston motion in the injection cavity and promote the intravital medicinal liquid of injecting cavity by injection outlet injection, medicinal liquid new after injection finishes enters in the injection cavity from the medicinal liquid compensating port, promote the piston return, liquid is thought highly of by flow measurement and is newly entered in the compressed bag, compressed bag is recovered distortion, finish a shot, duplicate injection, can realize at regular time and quantity precisely, continuous injectable drug, this utility model is simple in structure, safe and reliable, long service life, preparation cost is little, can effectively reduce the market price, enlarge the scope of application.
Description of drawings
Fig. 1 is the structural representation of metering-type syringe.
The specific embodiment
Now in conjunction with the accompanying drawings the technical solution of the utility model is further specified, but this utility model is not limited only to following embodiment situation.
Referring to Fig. 1, the metering-type syringe of present embodiment is to be connected by compression chamber 1, compressed bag 2, conduit 3, effusion meter measuring device 4, hollow piston bar 5, injection ram 6, sealing ring 7 and injection cavity 8 to constitute.
The liquid compression chamber of present embodiment is made up of compression chamber 1 and compressed bag 2, end at compression chamber 1 has air inlet, air inlet is provided with control valve, be provided with compressed bag 2 in the compression chamber 1, compressed bag 2 is made by elastomeric material, can resilience reset, be filled with water in the compressed bag 2, the liquid outlet of compressed bag 2 is by the inlet UNICOM of conduit 3 with effusion meter measuring device 4, effusion meter measuring device 4 is to adopt common effusion meter, can push compressed bag 2 distortion when air inlet has gas to enter, the water that promotes in the compressed bag 2 flows in the effusion meter measuring device 4 by conduit 3, by effusion meter measuring device 4 record monitoring discharges.
The other end of effusion meter measuring device 4 is provided with the liquid infusion chamber, and the liquid infusion chamber is to be connected by injection cavity 8, injection ram 6 and hollow piston bar 5 to constitute.End at injection cavity 8 is processed with injection outlet a and medicinal liquid compensating port b, is respectively arranged with one-way control valve on injection outlet a and medicinal liquid compensating port b, and medicinal liquid is gone out injecting liquid drug by injection outlet a, by the new medicinal liquid of medicinal liquid compensating port b compensation.In injection cavity 8, be provided with injection ram 6, injection ram 6 forms an enclosed space with injection cavity 8 and holds medicinal liquid, injection ram 6 can be along the 8 inwall activities of injection cavity, at the edge of injection ram 6 rubber seal 7 is set, prevent that medicinal liquid from leaking, the opposite side middle part welding of injection ram 6 is connected with hollow piston bar 5, and the arrival end of hollow piston bar 5 connects with the liquid outlet welding of effusion meter measuring device 4.
During use, open the air inlet of liquid compression chamber, feeding gas promotes compressed bag 2 distortion and the water in the compressed bag 2 is squeezed into inbound traffics quantifier 4 as power source, effusion meter measuring device 4 liquid outlets of flowing through are discharged and are entered in the hollow piston bar 5, form impulsive force at hollow piston bar 5 and promote injection ram 6 motions, injection ram 6 motions, the confined space internal gas pressure that holds medicinal liquid is increased, open the one-way control valve of injection outlet, medicinal liquid is injected into into human body by the injection outlet, after finishing, injection closes the one-way control valve in injection exit, pressure in the compressed bag 2 diminishes, and compressed bag 2 resiliences suck water in the compressed bag 2 again, piston reset, simultaneously, open the one-way control valve at medicinal liquid compensating port place, compensation medicinal liquid loss in injection cavity 8, the flow of effusion meter measuring device 4 record water is the injection volume of medicinal liquid, thereby realizes precisely injection.
Claims (3)
1. a metering-type syringe is characterized in that: be provided with effusion meter measuring device (4) between liquid compression chamber and liquid infusion chamber;
The liquid compression chamber is that the end at compression chamber (1) has air inlet, is provided with the compressed bag (2) of carrying liquid in the compression chamber (1), and the liquid outlet of compressed bag (2) links by the inlet of conduit (3) with effusion meter measuring device (4);
The liquid infusion chamber is to have injection outlet and medicinal liquid compensating port on injection cavity (8), being provided with in injection cavity (8) can be along cavity inner wall reciprocating injection ram (6) in injection cavity (8), one side of injection ram (6) is provided with hollow piston bar (5), and the liquid outlet of the other end of hollow piston bar (5) and effusion meter measuring device (4) links.
2. metering-type syringe according to claim 1 is characterized in that: described compressed bag (2) is a rubber bag.
3. metering-type syringe according to claim 1 is characterized in that: the edge of described injection ram (6) is provided with sealing ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008548 CN203090103U (en) | 2013-01-08 | 2013-01-08 | Metering type injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008548 CN203090103U (en) | 2013-01-08 | 2013-01-08 | Metering type injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203090103U true CN203090103U (en) | 2013-07-31 |
Family
ID=48841553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320008548 Expired - Fee Related CN203090103U (en) | 2013-01-08 | 2013-01-08 | Metering type injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203090103U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106620966A (en) * | 2016-11-28 | 2017-05-10 | 合肥讯创信息科技有限公司 | Needleless injector achieving automatic resetting |
| CN110115789A (en) * | 2018-02-07 | 2019-08-13 | 株式会社Ptech | Painless injection device |
| CN111068173A (en) * | 2020-01-03 | 2020-04-28 | 上海旭润医学科技有限责任公司 | Disposable wearable micro-flow continuous drug delivery system |
-
2013
- 2013-01-08 CN CN 201320008548 patent/CN203090103U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106620966A (en) * | 2016-11-28 | 2017-05-10 | 合肥讯创信息科技有限公司 | Needleless injector achieving automatic resetting |
| CN106620966B (en) * | 2016-11-28 | 2019-12-27 | 杨延萍 | Automatic reset needleless injector |
| CN110115789A (en) * | 2018-02-07 | 2019-08-13 | 株式会社Ptech | Painless injection device |
| CN110115789B (en) * | 2018-02-07 | 2021-11-30 | 株式会社Ptech | Painless injection device |
| CN111068173A (en) * | 2020-01-03 | 2020-04-28 | 上海旭润医学科技有限责任公司 | Disposable wearable micro-flow continuous drug delivery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20160108 |