CN111714369A - Medicine dissolving injector with air pressure balancing function - Google Patents
Medicine dissolving injector with air pressure balancing function Download PDFInfo
- Publication number
- CN111714369A CN111714369A CN202010592127.2A CN202010592127A CN111714369A CN 111714369 A CN111714369 A CN 111714369A CN 202010592127 A CN202010592127 A CN 202010592127A CN 111714369 A CN111714369 A CN 111714369A
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- Prior art keywords
- liquid
- passage
- injection tube
- medicine
- piston
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- 239000003814 drug Substances 0.000 title claims abstract description 81
- 229940079593 drug Drugs 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- 238000005086 pumping Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- A61J1/2048—Connecting means
- A61J1/2051—Connecting means having tap means, e.g. tap means activated by sliding
-
- 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
- A61J1/2072—Venting means for internal 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
- A61J1/2096—Combination of a vial and a syringe for transferring or mixing their contents
Landscapes
- 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 belongs to the field of medical treatment, and particularly relates to a medicine dissolving injector with an air pressure balancing function, which comprises an injection tube, wherein the upper end and the lower end of the injection tube are sealed, a piston is hermetically and slidably connected in the injection tube, a vertically arranged push rod is fixedly connected to the lower side wall of the piston, the other end of the push rod extends to the outside of the injection tube and is fixedly connected with a push block, the injection tube is divided into a liquid cavity and a gas cavity by the piston, a vertically arranged guide rod is fixedly connected in the injection tube, and one end of the guide rod is fixedly connected with the inner side wall of the gas cavity. When the needle head is pricked into the sealed medicine bottle to suck the liquid medicine from the medicine bottle, the gas in the gas cavity flows into the medicine bottle to balance the air pressure in the medicine bottle in the process that the liquid medicine enters the liquid cavity, and when the liquid medicine is injected into the medicine bottle, the extruded gas in the medicine bottle also flows into the gas cavity in the process that the liquid medicine enters the medicine bottle, so that the air pressure is not overcome to do work in the process of pumping and sending, and the use is convenient.
Description
Technical Field
The invention belongs to the field of medical treatment, and particularly relates to a medicine dissolving injector with an air pressure balancing function.
Background
The medical appliances are various, and the injector is one of the important ones, and the injector includes a veterinary injector, a disposable injector, a medicine dissolving injector and the like, and different kinds of injectors are used according to different use scenes.
When carrying out the configuration of liquid medicine, often will follow in the airtight medicine bottle with liquid medicine suction or inject into airtight medicine bottle with the liquid medicine in, and most traditional medicine dissolving syringe can only carry out simple suction, it is difficult to balance the atmospheric pressure in the medicine bottle, need use great power to accomplish the configuration of liquid medicine when extracting the medicine, it is comparatively inconvenient during the use, and most traditional syringes very easily just can inhale gas in the injection tube in the use, thereby it can only extrude gas wherein with the syringe needle handstand generally to get rid of the bubble, nevertheless liquid medicine is also extruded along with gas together easily in this process, cause the waste of liquid medicine.
To this end, we propose a drug dissolving syringe with air pressure balancing function to solve the above problems.
Disclosure of Invention
The invention aims to provide a medicine dissolving injector with an air pressure balancing function, which is convenient to use and aims to solve the problem that most of traditional medicine dissolving injectors are difficult to balance air pressure in a medicine bottle.
In order to achieve the purpose, the invention adopts the following technical scheme: a medicine dissolving injector with air pressure balancing function comprises an injection tube, wherein the upper end and the lower end of the injection tube are sealed and arranged, a piston is connected in the injection tube in a sealing and sliding manner, a vertically arranged push rod is fixedly connected to the lower side wall of the piston, the other end of the push rod extends to the outside of the injection tube and is fixedly connected with a push block, the injection tube is divided into a liquid cavity and a gas cavity by the piston, a vertically arranged guide rod is fixedly connected in the injection tube, one end of the guide rod is fixedly connected with the inner side wall of the gas cavity, the other end of the guide rod penetrates through the liquid cavity and extends to the outside of the injection tube, a lower liquid channel communicated with the liquid cavity and a lower air channel communicated with the gas cavity are arranged in the guide rod, a needle head is fixedly installed at one end, which is positioned outside the injection tube, the upper liquid channel is communicated with the lower liquid channel, and the upper air channel is communicated with the lower air channel.
The invention has the beneficial effects that:
when pricking sealed medicine bottle in the follow and absorbing the liquid medicine with the syringe needle, gaseous in the gaseous intracavity of in-process that the liquid medicine got into the liquid chamber also can flow the atmospheric pressure in the medicine bottle internal balance medicine bottle, when pouring into the liquid medicine into the medicine bottle, at the in-process that the liquid medicine got into the medicine bottle, gaseous intracavity also can flow to by extruded gas in the medicine bottle, send out the in-process at the suction and need not overcome atmospheric pressure and do work, it is comparatively convenient during the use.
In the dissolved medicine injector with the air pressure balancing function, the push rod is connected with the side wall of the injection cylinder in a sealing and sliding manner, the piston is connected with the guide rod in a sealing and sliding manner, and sealing layers are arranged at the joint of the injection cylinder and the push rod and the joint of the piston and the guide rod.
The air tightness between the push rod and the piston and between the injection tube and the guide rod in the sliding process is better, the air tightness of the whole injector is ensured, and the precision of the injector is improved.
In the medicine dissolving injector with the air pressure balancing function, the upper liquid passage and the communicating ports of the upper air passage and the outside are respectively positioned at the two ends of the needle head, so that the mixed flow of the gas and the liquid at the needle head can be effectively prevented.
In the above drug dissolving syringe with the function of balancing air pressure, the lower liquid channel includes an upper channel and a lower channel, the inner diameter of the lower channel is smaller than the inner diameter of the upper channel, and a floating block with an outer diameter smaller than the inner diameter of the upper channel and larger than the inner diameter of the lower channel is arranged in the upper channel.
When liquid medicine flows in the upper liquid channel, the floating block can float in the liquid medicine under the action of buoyancy, in the process that the liquid medicine flows from top to bottom, the liquid medicine can flow into the lower channel from a gap between the floating block and the upper channel, when gas is sucked into the upper channel, the floating block can float on the gas-liquid separation surface, the floating block can plug the inlet of the lower channel along with the descending of the liquid level, the gas is prevented from moving downwards, and the gas can be effectively prevented from being sucked into the injection tube.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a drug dissolving syringe with an air pressure balancing function according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural diagram of an embodiment 2 of a drug dissolving syringe with an air pressure balancing function according to the present invention;
fig. 4 is an enlarged schematic view of B in fig. 3.
In the figure, 1 injection cylinder, 2 pistons, 3 push rods, 4 push blocks, 5 liquid cavities, 6 gas cavities, 7 guide rods, 8 lower liquid channels, 9 lower air channels, 10 needles, 11 upper liquid channels, 12 upper air channels, 13 sealing layers, 14 upper channels, 15 lower channels and 16 floating blocks.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1-3, a medicine dissolving injector with air pressure balancing function includes an injection tube 1, the upper and lower ends of the injection tube 1 are sealed, a piston 2 is hermetically and slidably connected in the injection tube 1, a vertically arranged push rod 3 is fixedly connected to the lower sidewall of the piston 2, and the other end of the push rod 3 extends to the outside of the injection tube 1 and is fixedly connected with a push block 4.
The piston 2 divides the syringe 1 into a liquid chamber 5 and a gas chamber 6, liquid medicine is stored in the liquid chamber 5, gas is contained in the gas chamber 6, a vertically arranged guide rod 7 is fixedly connected in the syringe 1, one end of the guide rod 7 is fixedly connected with the inner side wall of the gas chamber 6, and the other end of the guide rod 7 penetrates through the liquid chamber 5 and extends to the outside of the syringe 1 (as shown in fig. 1).
It should be noted that the push rod 3 is connected with the side wall of the injection tube 1 in a sealing and sliding manner, the piston 2 is connected with the guide rod 7 in a sealing and sliding manner, and the sealing layers 13 are arranged at the joint of the injection tube 1 and the push rod 3 and the joint of the piston 2 and the guide rod 7, so that the airtightness of the whole medicine dissolving injector can be ensured, and the precision of the injector can be improved.
A lower liquid channel 8 communicated with the liquid cavity 5 and a lower air channel 9 communicated with the gas cavity 6 are arranged in the guide rod 7, a needle 10 is fixedly arranged at one end of the guide rod 7 positioned outside the injection tube 1, an upper liquid channel 11 and an upper air channel 12 (shown in figure 2) communicated with the outside are arranged in the needle 10, the upper liquid channel 11 is communicated with the lower liquid channel 8, and the upper air channel 12 is communicated with the lower air channel 9.
It is worth mentioning that the communicating ports of the upper liquid passage 11 and the upper air passage 12 and the outside are respectively located at two ends of the needle 10, which can effectively prevent the gas and the liquid from mixing at the needle 10, so that the gas appears in the liquid chamber 5 and the liquid appears in the gas chamber 6.
The invention can be illustrated by the following operating modes:
when the medicine bottle is used, when medicine liquid needs to be extracted from the sealed bottle, the medicine bottle is inverted, the needle 10 is upwards pricked into the medicine bottle, the push block 4 is outwards pulled, the piston 2 is driven to downwards move through the push rod 3, the air pressure in the liquid cavity 5 is reduced, and the medicine liquid can be sucked into the liquid cavity 5 through the upper liquid channel 11 on the needle 10 and the lower liquid channel 8 in the guide rod 7.
The air pressure in the medicine bottle is gradually reduced in the process of the liquid medicine entering the liquid cavity 5, meanwhile, the air pressure in the air cavity 6 is continuously increased in the process of the piston 2 moving downwards, so that the air in the air cavity 6 is discharged into the medicine bottle through the lower air passage 9 in the guide rod 7 and the upper air passage 12 in the needle 10, and the air pressure in the medicine bottle is balanced.
When needs pour into sealed medicine bottle with the liquid medicine in, just putting the medicine bottle, in syringe needle 10 pricks into the medicine bottle downwards, promote ejector pad 4 downwards and drive piston 2 and slide downwards, in the liquid medicine in the liquid chamber 5 can be crowded the medicine bottle, atmospheric pressure in the medicine bottle can increase, and meanwhile the pressure in the gas chamber 6 reduces, can inhale gas chamber 6 with the gas in the medicine bottle in, atmospheric pressure in the medicine bottle is balanced again.
When the liquid medicine in the sealed bottle is sucked, the air pressure does not need to be overcome to do work, and the use is convenient and labor-saving.
Example 2
As shown in fig. 4, the present embodiment is different from embodiment 1 in that: the lower liquid channel 8 comprises an upper channel 14 and a lower channel 15, the inner diameter of the lower channel 15 is smaller than the inner diameter of the upper channel 14, and a floating block 16 (shown in fig. 4) with the outer diameter smaller than the inner diameter of the upper channel 14 and larger than the inner diameter of the lower channel 15 is arranged in the upper channel 14.
In this embodiment, when the liquid medicine flows in the upper channel 14, the floating block 16 floats in the liquid medicine under the action of buoyancy, and in the process of the liquid medicine flowing from top to bottom, the liquid medicine flows into the lower channel 15 from the gap between the floating block 16 and the upper channel 14, and when the gas is sucked into the upper channel 14, the floating block 16 floats on the gas-liquid separation surface, and the floating block 16 blocks the inlet of the lower channel 15 along with the descending of the liquid level, so as to prevent the gas from moving downwards, and effectively prevent the gas from being sucked into the injection cylinder 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a dissolve medicine syringe with balanced atmospheric pressure function, includes injection tube (1), its characterized in that, the upper and lower extreme of injection tube (1) all seals the setting, sealed sliding connection has piston (2) in injection tube (1), the lower lateral wall fixedly connected with of piston (2) push rod (3) of vertical setting, the other end of push rod (3) extends to injection tube (1) outside and sets up and fixedly connected with ejector pad (4), piston (2) divide into liquid chamber (5) and gas chamber (6) with injection tube (1), fixedly connected with guide arm (7) of vertical setting in injection tube (1), the one end of guide arm (7) and the inside wall fixed connection of gas chamber (6), the other end of guide arm (7) runs through liquid chamber (5) and extends to injection tube (1) outside and sets up, be equipped with lower liquid channel (8) and the intercommunication of gas chamber (6) in guide arm (7) with liquid chamber (5) The syringe is characterized in that the lower air passage (9), one end, located outside the injection cylinder (1), of the guide rod (7) is fixedly provided with a needle (10), an upper liquid passage (11) and an upper air passage (12) which are communicated with the outside are arranged in the needle (10), the upper liquid passage (11) is communicated with the lower liquid passage (8), and the upper air passage (12) is communicated with the lower air passage (9).
2. The drug dissolving injector with the function of balancing air pressure according to claim 1, characterized in that the push rod (3) is connected with the side wall of the injection cylinder (1) in a sealing and sliding manner, the piston (2) is connected with the guide rod (7) in a sealing and sliding manner, and the sealing layer (13) is arranged at the joint of the injection cylinder (1) and the push rod (3) and the joint of the piston (2) and the guide rod (7).
3. The drug dissolving injector with the air pressure balancing function according to claim 2, wherein the communication ports of the upper liquid passage (11) and the upper air passage (12) with the outside are respectively located at two ends of the needle (10).
4. The drug dissolving syringe with air pressure balancing function according to claim 3, wherein the lower fluid passage (8) comprises an upper passage (14) and a lower passage (15), the inner diameter of the lower passage (15) is smaller than the inner diameter of the upper passage (14), and a floating block (16) with an outer diameter smaller than the inner diameter of the upper passage (14) and larger than the inner diameter of the lower passage (15) is arranged in the upper passage (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010592127.2A CN111714369A (en) | 2020-06-25 | 2020-06-25 | Medicine dissolving injector with air pressure balancing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010592127.2A CN111714369A (en) | 2020-06-25 | 2020-06-25 | Medicine dissolving injector with air pressure balancing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111714369A true CN111714369A (en) | 2020-09-29 |
Family
ID=72570061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010592127.2A Withdrawn CN111714369A (en) | 2020-06-25 | 2020-06-25 | Medicine dissolving injector with air pressure balancing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111714369A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114288181A (en) * | 2021-12-15 | 2022-04-08 | 北京伏尔特技术有限公司 | Closed drug transfer device capable of realizing air pressure balance drug transfer in closed environment |
| CN115607444A (en) * | 2022-09-30 | 2023-01-17 | 湛江健力源医疗用品有限公司 | Closed liquid medicine transfer device and liquid medicine transfer system with double indoor circulation |
-
2020
- 2020-06-25 CN CN202010592127.2A patent/CN111714369A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114288181A (en) * | 2021-12-15 | 2022-04-08 | 北京伏尔特技术有限公司 | Closed drug transfer device capable of realizing air pressure balance drug transfer in closed environment |
| CN115607444A (en) * | 2022-09-30 | 2023-01-17 | 湛江健力源医疗用品有限公司 | Closed liquid medicine transfer device and liquid medicine transfer system with double indoor circulation |
| CN115607444B (en) * | 2022-09-30 | 2023-05-02 | 湛江健力源医疗用品有限公司 | Double-indoor circulation closed type liquid medicine transfer device and liquid medicine transfer system |
| US12274673B1 (en) | 2022-09-30 | 2025-04-15 | Guangdong Jianliyuan Medical Technology Co., Ltd. | Closed type medicine liquid transfer device and system with double-chamber internal circulation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200929 |