CN110812230A - Disposable automatic exhaust syringe for dispensing - Google Patents
Disposable automatic exhaust syringe for dispensing Download PDFInfo
- Publication number
- CN110812230A CN110812230A CN201911254437.7A CN201911254437A CN110812230A CN 110812230 A CN110812230 A CN 110812230A CN 201911254437 A CN201911254437 A CN 201911254437A CN 110812230 A CN110812230 A CN 110812230A
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- CN
- China
- Prior art keywords
- exhaust
- outer sleeve
- piston
- automatic exhaust
- dispensing
- 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
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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
- A61J1/2096—Combination of a vial and a syringe for transferring or mixing their contents
-
- 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
- A61J1/2068—Venting 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 relates to the technical field of medical instruments, and particularly discloses a disposable automatic exhaust medicine dispensing injector which comprises an outer sleeve, a core rod, a piston and an automatic exhaust device, wherein the automatic exhaust device is arranged at one end of the outer sleeve, a medicine needle hole is also formed at one end of the outer sleeve, the piston is arranged in the outer sleeve, the core rod is arranged in the outer sleeve, and one end of the core rod is connected with the piston. The invention has the beneficial effects that: the invention solves the inconvenience of repeatedly pumping and exhausting air when dispensing the medicine in the existing medicine dispenser, has the characteristics of automatic exhaust of liquid pumping and liquid injecting, and has simple structure, simple and convenient operation and low cost.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable automatic exhaust syringe for dispensing.
Background
Syringes for dispensing are widely used clinically, and medical workers often use large-sized syringes and dispensing needles to dispense intravenous infusion medicines during work. The existing syringe usually has no exhaust function, gas is easy to generate and automatic exhaust cannot be realized after liquid medicine is extracted during conventional medicine dispensing, and when liquid is injected into a powder bottle or a mother liquid bottle, the pressure in the bottle is gradually increased.
Therefore, it is necessary to exhaust the gas while keeping the syringe vertical, which is troublesome and takes a long time. The whole process of dispensing needs close attention of medical care personnel, and brings great inconvenience to the work of the medical care personnel. To this end, we propose a disposable auto-exhaust dispensing syringe.
Disclosure of Invention
The invention aims to overcome the problems of the prior art and provide a disposable automatic exhaust gas dispensing syringe which is simple to operate and low in cost.
The invention adopts the technical scheme that the disposable automatic exhaust medicine dispensing injector comprises an outer sleeve, a core bar, a piston and an automatic exhaust device, wherein the automatic exhaust device is arranged at one end of the outer sleeve;
the automatic exhaust device comprises an exhaust hole and an exhaust water-blocking film, the exhaust hole is communicated with the inner cavity of the outer sleeve, and the exhaust water-blocking film is arranged in the exhaust hole.
Further, an air inlet plug is connected to the outer wall of one end, far away from the medicine needle hole, of the exhaust hole.
Further, the exhaust hole is movably connected with the air inlet plug, and the air inlet plug is in interference fit with the exhaust hole.
Furthermore, a convex block is arranged at one end, close to the piston, of the core rod, a groove matched with the convex block is formed in the piston, and the piston and the core rod are both arranged in the outer sleeve in a sliding mode.
Further, one end of the core rod, which is far away from the piston, extends to the outside of the outer sleeve.
Furthermore, the surface of the air-exhausting water-blocking film has hydrophobicity, the film material is made of PTFE (polytetrafluoroethylene), the average pore diameter of the film material is not more than 0.55um, and the air-exhausting water-blocking film has the function of allowing air to freely pass but preventing liquid from passing.
The working principle of the invention is as follows: when the automatic air exhaust device is used, the air inlet plug is closed, the dispensing needle punctures an infusion bottle, liquid is extracted to enter the outer sleeve of the injector, residual gas is left in the outer sleeve, the air inlet plug is opened, the liquid is discharged and injected, the gas in the outer sleeve is automatically discharged through the air exhaust water-blocking film of the automatic air exhaust device, and the liquid enters the dispensing device through the medicine needle hole.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention solves the inconvenience of repeatedly pumping and exhausting air when dispensing the medicine in the existing medicine dispenser, has the characteristics of automatic exhaust of liquid pumping and liquid injecting, and has simple structure, simple and convenient operation and low cost.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Description of the drawings: 1-an air inlet plug; 2-air exhaust holes; 3-medicine needle hole; 4-a bump; 5-a piston; 6-exhausting and water blocking film; 7-coating; 8-core bar.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A disposable automatic exhaust syringe for medicine preparation comprises an outer sleeve 7, a core rod 8, a piston 5 and an automatic exhaust device.
As shown in fig. 1, an automatic exhaust device is arranged at one end of an outer sleeve 7, a medicine needle hole 3 is further arranged at one end of the outer sleeve 7, a piston 5 is arranged in the outer sleeve 7, a core rod 8 is arranged in the outer sleeve 7, and one end of the core rod 8 is connected with the piston 5. The end of the core rod 8 close to the piston 5 is provided with a convex block 4, the piston 5 is provided with a groove matched with the convex block 4, and the piston 5 and the core rod 8 are both arranged in the outer sleeve 7 in a sliding manner. The end of the core rod 8 remote from the piston extends outside the outer jacket 7.
The automatic exhaust device comprises an exhaust hole 2, an air inlet plug 1 and an exhaust water-blocking film 6, the exhaust hole 2 is communicated with the inner cavity of the outer sleeve 7, the exhaust water-blocking film 6 is arranged in the exhaust hole 2, and the outer wall of one end, far away from the medicine needle hole 3, of the exhaust hole 2 is connected with the air inlet plug 1. The surface of the exhaust water-blocking film 6 has hydrophobicity, the average pore diameter of the film material is not more than 0.55um, and the exhaust water-blocking film has the function that gas can freely pass through but liquid cannot pass through. Exhaust hole 2 and air inlet plug 1 swing joint, air inlet plug 1 and exhaust hole 2 interference fit.
The working principle of the invention is as follows: during the use, close air inlet plug 1, be equipped with the dispensing needle on medicine needle hole 3, the dispensing needle puncture infusion bottle, in the overcoat 7 of extraction liquid entering syringe, leave residual gas in the overcoat 7, open air inlet plug 1, through medicine needle hole 3 row notes liquid, the gas is discharged through automatic exhaust apparatus's exhaust water-blocking film 6 is automatic in overcoat 7, and liquid gets into dispensing device through medicine needle hole 3.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. Disposable automatic exhaust syringe for dispensing medicine, its characterized in that: the automatic exhaust device is arranged at one end of the outer sleeve (7), a medicine needle hole (3) is further formed in one end, provided with the automatic exhaust device, of the outer sleeve (7), the piston (5) is arranged in the outer sleeve (7), the core rod (8) is arranged in the outer sleeve (7), and one end of the core rod (8) is connected with the piston (5);
the automatic exhaust device comprises an exhaust hole (2) and an exhaust water-blocking film (6), the exhaust hole (2) is communicated with the inner cavity of the outer sleeve (7), and the exhaust water-blocking film (6) is arranged in the exhaust hole (2).
2. The disposable automatic exhaust dispensing syringe of claim 1, wherein: an air inlet plug (1) is connected to the outer wall of one end of the exhaust hole (2) far away from the medicine needle hole (3).
3. The disposable automatic exhaust dispensing syringe of claim 2, wherein: the exhaust hole (2) is movably connected with the air inlet plug (1), and the air inlet plug (1) is in interference fit with the exhaust hole (2).
4. The disposable automatic exhaust dispensing syringe of claim 1, wherein: a convex block (4) is arranged at one end, close to the piston (5), of the core rod (8), a groove matched with the convex block (4) is formed in the piston (5), and the piston (5) and the core rod (8) are arranged in the outer sleeve (7) in a sliding mode.
5. The disposable automatic exhaust dispensing syringe of claim 1, wherein: one end of the core rod (8) far away from the piston (5) extends to the outside of the outer sleeve (7).
6. The disposable automatic exhaust dispensing syringe of claim 1, wherein: the membrane material of the exhaust water-blocking membrane (6) adopts PTFE, and the average pore diameter of the membrane material is not more than 0.55 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254437.7A CN110812230A (en) | 2019-12-08 | 2019-12-08 | Disposable automatic exhaust syringe for dispensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254437.7A CN110812230A (en) | 2019-12-08 | 2019-12-08 | Disposable automatic exhaust syringe for dispensing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110812230A true CN110812230A (en) | 2020-02-21 |
Family
ID=69544232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911254437.7A Pending CN110812230A (en) | 2019-12-08 | 2019-12-08 | Disposable automatic exhaust syringe for dispensing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110812230A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203898851U (en) * | 2014-06-09 | 2014-10-29 | 徐海英 | Injection syringe with needle cylinder capable of automatically discharging air |
| CN104436360A (en) * | 2014-12-30 | 2015-03-25 | 北京伏尔特技术有限公司 | Automatic exhaust and automatic liquid stopping dropping bucket and automatic exhaust and automatic liquid stopping method thereof |
| CN104606748A (en) * | 2015-02-10 | 2015-05-13 | 山东大学齐鲁医院 | Pressure reduction injection syringe capable of exhausting |
-
2019
- 2019-12-08 CN CN201911254437.7A patent/CN110812230A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203898851U (en) * | 2014-06-09 | 2014-10-29 | 徐海英 | Injection syringe with needle cylinder capable of automatically discharging air |
| CN104436360A (en) * | 2014-12-30 | 2015-03-25 | 北京伏尔特技术有限公司 | Automatic exhaust and automatic liquid stopping dropping bucket and automatic exhaust and automatic liquid stopping method thereof |
| CN104606748A (en) * | 2015-02-10 | 2015-05-13 | 山东大学齐鲁医院 | Pressure reduction injection syringe capable of exhausting |
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Legal Events
| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200221 |
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| WD01 | Invention patent application deemed withdrawn after publication |