CN111419705A - Negative pressure suction injector - Google Patents
Negative pressure suction injector Download PDFInfo
- Publication number
- CN111419705A CN111419705A CN202010357724.7A CN202010357724A CN111419705A CN 111419705 A CN111419705 A CN 111419705A CN 202010357724 A CN202010357724 A CN 202010357724A CN 111419705 A CN111419705 A CN 111419705A
- Authority
- CN
- China
- Prior art keywords
- injection tube
- syringe
- plunger
- sealing plug
- negative pressure
- 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
Links
- 238000002347 injection Methods 0.000 claims abstract description 54
- 239000007924 injection Substances 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 239000011521 glass Substances 0.000 claims abstract description 18
- 210000003437 trachea Anatomy 0.000 claims 2
- 239000003814 drug Substances 0.000 description 26
- 239000007788 liquid Substances 0.000 description 20
- 238000005086 pumping Methods 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010050031 Muscle strain Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 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
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a negative pressure suction injector, which relates to the technical field of medical appliances and comprises an injection tube, wherein a plunger is arranged in the injection tube, the lower side of the plunger is fixedly connected with a rubber plug, the rubber plug is in sliding connection with the injection tube, the upper end of the injection tube is provided with a sealing plug, and the sealing plug is fixedly connected with the injection tube; the automatic suction device comprises a sealing plug, a glass tube, a plunger, an air pump, a rubber plug and a sealing plug, wherein the sealing plug is fixedly connected with the glass tube, the plunger is in sliding connection with the glass tube, the upper end of the glass tube is fixedly connected with the air tube, the air tube is fixedly connected with the air pump, and the lower end of the plunger is provided with an air hole.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a negative pressure suction injector.
Background
The syringe is a common medical appliance, and as early as the 15 th century, katini in italian has proposed the principle of the syringe, and mainly uses a needle to extract or inject gas or liquid, the syringe can also be used for medical equipment, containers and scientific instruments such as those in chromatography to inject through a rubber diaphragm, and the syringe is widely used in daily medical treatment, and is generally used for injecting medicines, proportioning liquid medicines, detecting blood drawing and the like to patients.
At infusion room or quiet center of joining in marriage, join in marriage liquid nurse and need pass through many bottles of liquid medicine of syringe configuration every day, current syringe needs the nurse to hold respectively through both hands and gets syringe and medicine bottle and draw liquid medicine, because the work frequency is great, causes muscle strain and finger wound swelling easily, has seriously influenced liquid medicine configuration efficiency simultaneously, consequently, we propose a negative pressure suction syringe.
Disclosure of Invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide a vacuum aspiration syringe to solve the above problems in the background art.
The purpose of the invention can be realized by the following technical scheme: a negative pressure suction injector comprises an injection tube, wherein a plunger is arranged in the injection tube, the lower side of the plunger is fixedly connected with a rubber plug, the rubber plug is slidably connected with the injection tube, a sealing plug is arranged at the upper end of the injection tube, and the sealing plug is fixedly connected with the injection tube;
the sealing plug is provided with a glass tube, the glass tube is fixedly connected with the sealing plug, the plunger is in sliding connection with the glass tube, the upper end of the glass tube is fixedly connected with an air tube, the air tube is fixedly connected with an air pump, and the lower end of the plunger is provided with an air hole.
As a further scheme of the invention, the outer side of the injection cylinder is provided with an air outlet pipe, the air outlet pipe is fixedly connected with the injection cylinder, and the outer end of the air outlet pipe is fixedly connected with the air pipe plug.
As a further scheme of the invention, the upper end of the injection cylinder is provided with an end cover, and the end cover is connected with the injection cylinder in a sliding manner.
As a further scheme of the invention, a limit groove is arranged on the inner side surface of the end cover, limit blocks are symmetrically arranged at the upper end of the injection tube, and the injection tube is tightly contacted with the end cover when the limit blocks and the limit groove are installed in a matched manner.
As a further scheme of the invention, a spring is arranged between the end cover and the sealing plug, and the upper side of the spring is fixedly connected with the bottom surface in the end cover.
As a further scheme of the invention, the upper end of the injection tube is provided with a tapered wide-mouth shape, and the taper is consistent with that of the sealing plug.
As a further scheme of the invention, the plunger is provided with a pressure sensor, and the pressure sensor is embedded and installed inside the plunger.
As a further scheme of the invention, a support is arranged on the injection cylinder and is in sliding connection with the injection cylinder.
As a further scheme of the invention, a display screen, an adjusting button and a switch are arranged outside the air pump.
The invention has the beneficial effects that:
1. syringe inner chamber and the rubber buffer of setting in its inside to and the sealing plug that the upper end set up becomes airtight space jointly, start air pump work and bleed in to airtight space, thereby form the negative pressure in the airtight space, order about the rubber buffer upward movement, the syringe sucks the liquid medicine in the medicine bottle, realize the automatic function of sucking promptly, reduced nurse's the frequency of extraction syringe, reduced nurse's fatigue strength, also improved liquid medicine ratio efficiency simultaneously.
2. According to the invention, the pressure sensor is arranged, so that fixed-dose liquid medicine can be extracted, and the base is arranged below the injector, so that the injector can be fixed on a medicine bottle, hands of a nurse are released, and the working efficiency is improved.
3. The design of the invention can realize convenient switching between automatic and manual extraction of the injector, and has wide applicability.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of the end cap of the present invention;
FIG. 4 is a schematic view of the syringe of the present invention;
in the figure: the device comprises a support seat-1, an injection tube-2, an end cover-3, a plunger-4, an air tube-5, an air pump-6, an air outlet tube-7, an air tube plug-8, a spring-9, a sealing plug-10, an air hole-11, a pressure sensor-12, a rubber plug-13, a limiting block-14, a glass tube-15 and a limiting groove-31.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 4, in an embodiment of the present invention, a negative pressure suction syringe includes a syringe barrel 2, a plunger 4 is disposed in the syringe barrel 2, a lower side of the plunger 4 is fixedly connected to a rubber plug 13, the rubber plug 13 is slidably connected to the syringe barrel 2, an upper end of the syringe barrel 2 is provided with a sealing plug 10, the sealing plug 10 is fixedly connected to the syringe barrel 2, the sealing plug 10 is provided with a glass tube 15, the glass tube 15 is fixedly connected to the sealing plug 10, the plunger 4 is slidably connected to the glass tube 15, an upper end of the plunger 4 is fixedly connected to an air tube 5, the air tube 5 is fixedly connected to an air pump 6, and a lower end of the plunger 4 is provided with an.
The outer side of the injection tube 2 is provided with an air outlet tube 7, the air outlet tube 7 is fixedly connected with the injection tube 2, the outer end of the air outlet tube 7 is fixedly connected with an air tube plug 8, when the automatic liquid medicine pumping is carried out, the air tube plug 8 and the air outlet tube 7 are fixed, the inner cavity of the injection tube 2 and a rubber plug 13 arranged in the inner cavity of the injection tube and a sealing plug 10 arranged at the upper end form a closed space together, the air pump 6 is started to work to pump air in the closed space, so that negative pressure is formed in the closed space, the rubber plug 13 is driven to move upwards, the injection tube 2 pumps the liquid medicine in the medicine bottle, namely, the automatic pumping function is realized, the frequency of the pumping;
when micro-dosage liquid medicine needs to be extracted, the automatic suction precision is poor, the air pipe plug 8 can be taken down from the air outlet pipe 7, the air pipe 5 above the glass pipe 15 is pulled out, the air pipe plug 8 is installed on the plunger 4, the liquid medicine can be manually sucked, the operation is convenient and fast, the disassembly and the assembly are convenient, and the applicability of the micro-dosage liquid medicine sucking device is improved.
The upper end of the injection tube 2 is provided with an end cover 3, and the end cover 3 is movably connected with the injection tube 2; the injection tube 2 is symmetrically provided with limiting blocks 14 at the upper end, the end cover 3 is provided with limiting grooves 31, when the limiting grooves 31 are matched and connected with the limiting blocks 14, the injection tube 2 and the end cover 3 can be fixed, circular holes are formed in the end cover 3, the end cover 3 penetrates through the glass tube 15 and is installed on the injection tube 2, the limiting grooves 31 formed in the end cover 3 and the limiting blocks 14 formed in the injection tube 2 are firstly avoided during installation, when the end cover 3 cannot be pressed, the limiting grooves 31 are screwed in clockwise, so that the limiting grooves 31 and 4 are matched, the injection tube 2 and the end cover 3 are fixed, meanwhile, the end cover 3 presses and fixes the sealing plug 10, and the sealing plug 10; the spring 9 is arranged between the end cover 3 and the sealing plug 10, the upper side of the spring 9 is fixedly connected with the inner bottom surface of the end cover 3, the limiting groove 31 is in close contact with the limiting block 14 under the action of the elastic force of the spring 9, the limiting groove 31 and the limiting block 14 are prevented from being loosened and separated, so that the end cover 3 is separated from the injection tube 2, the connection stability of the end cover 3 and the injection tube 2 is improved, and the air tightness of the whole structure is guaranteed.
Further, 2 upper ends of injection tube set up the toper wide-mouth shape, and the tapering is unanimous with sealing plug 10, the rubber buffer 13 installation of being convenient for of this design, the area of contact of sealing plug 10 with injection tube 2 has been increased simultaneously, sealing performance has been improved, and the conical surface length of sealing plug 10 is unanimous with the conical surface length of injection tube 2, sealing plug 10 straight cylindrical surface length is greater than end cover 3 and the mobile clearance length of injection tube 2, consequently, when sealing plug 10 receives inside pressure to outwards move, sealing plug 10 straight cylindrical surface still closely laminates with injection tube 2, holistic gas tightness has been guaranteed.
The automatic quantitative liquid medicine sucking device is characterized in that a pressure sensor 12 is arranged on the plunger piston 4, the pressure sensor 12 is embedded and installed in the plunger piston 4, the pressure sensor 12 is connected with a control module, the pressure is converted into no-space allowance, the work of the air pump 6 is controlled through P L C, the function of sucking liquid medicine quantitatively is achieved, a display screen, an adjusting button and a switch are arranged on the air pump 6, the sucking capacity of the injector can be set in advance according to different sucked doses, the injector can automatically stop sucking when the sucked dose reaches a set value, and the injector can be prevented from being damaged due to the fact that the air pump 6 continuously works.
Be provided with support 1 on injection tube 2, support 1 and injection tube 2 sliding connection, when advancing suction liquid medicine, with 1 covers of support in the medicine bottle top, insert injection tube 2 behind the medicine bottle with 1 downstream of support make its and table surface contact, support 1 plays the fixed action to injection tube 2, does not need the user to support with the hand, has liberated user's both hands, has improved work efficiency.
The working principle of the invention is as follows: the inner cavity of the injection tube 2, the rubber plug 13 arranged in the injection tube and the sealing plug 10 arranged at the upper end form a closed space together, the air pump 6 is started to work to pump air in the closed space, so that negative pressure is formed in the closed space, the rubber plug 13 is driven to move upwards, the injection tube 2 sucks liquid medicine in the medicine bottle, the automatic suction function is realized, the frequency of the suction syringe of a nurse is reduced, the fatigue strength of the nurse is reduced, and meanwhile, the liquid medicine proportioning efficiency is also improved; an air outlet pipe 7 is arranged on the injection tube 2, an air pipe plug 8 on the air outlet pipe 7 is taken down, the injector can manually extract liquid medicine, and the applicability of the injector is improved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "bottom", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the method is simple. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the spirit and scope of the invention, and any equivalents thereto, such as those skilled in the art, are intended to be embraced therein.
Claims (9)
1. The negative pressure suction injector comprises an injection tube (2), and is characterized in that a plunger (4) is arranged in the injection tube (2), the lower side of the plunger (4) is fixedly connected with a rubber plug (13), the rubber plug (13) is in sliding connection with the injection tube (2), a sealing plug (10) is arranged at the upper end of the injection tube (2), and the sealing plug (10) is fixedly connected with the injection tube (2);
be provided with glass pipe (15) on sealing plug (10), glass pipe (15) and sealing plug (10) fixed connection, plunger (4) and glass pipe (15) sliding connection, glass pipe (15) upper end and trachea (5) fixed connection, trachea (5) and air pump (6) fixed connection, plunger (4) lower extreme is provided with gas pocket (11).
2. The negative-pressure suction syringe as claimed in claim 1, wherein an air outlet pipe (7) is arranged on the outer side of the syringe barrel (2), the air outlet pipe (7) is fixedly connected with the syringe barrel (2), and the outer end of the air outlet pipe (7) is fixedly connected with an air pipe plug (8).
3. The negative pressure suction syringe as claimed in claim 1, wherein the top end of the syringe barrel (2) is provided with a cap (3), and the cap (3) is slidably connected with the syringe barrel (2).
4. The negative pressure suction injector according to claim 3, wherein the inner side surface of the end cap (3) is provided with a limiting groove (31), the upper end of the injection tube (2) is symmetrically provided with limiting blocks (14), and when the limiting blocks (14) and the limiting groove (31) are installed in a matching manner, the injection tube (2) is in close contact with the end cap (3).
5. A vacuum suction syringe according to claim 3, characterized in that a spring (9) is arranged between the end cap (3) and the sealing plug (10), and the upper side of the spring (9) is fixedly connected with the inner bottom surface of the end cap (3).
6. The negative pressure aspiration syringe of claim 1, wherein the upper end of the barrel (2) is tapered to a wide-mouth shape, and the taper and the tapered length are the same as those of the sealing plug (10).
7. The negative pressure aspiration syringe of claim 1, wherein the plunger (4) is provided with a pressure sensor (12), and the pressure sensor (12) is embedded in the plunger (4).
8. The negative pressure aspiration syringe of claim 1, wherein the barrel (2) is provided with a support (1), and the support (1) is slidably connected with the barrel (2).
9. The negative pressure suction syringe as claimed in claim 1, wherein a display screen, an adjusting button and a switch are provided outside the air pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357724.7A CN111419705A (en) | 2020-04-29 | 2020-04-29 | Negative pressure suction injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357724.7A CN111419705A (en) | 2020-04-29 | 2020-04-29 | Negative pressure suction injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111419705A true CN111419705A (en) | 2020-07-17 |
Family
ID=71554921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010357724.7A Pending CN111419705A (en) | 2020-04-29 | 2020-04-29 | Negative pressure suction injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111419705A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250022A (en) * | 2020-08-31 | 2021-01-22 | 深圳供电局有限公司 | Oil discharge recovery device for injector |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2179142Y (en) * | 1993-04-02 | 1994-10-12 | 南京市第一医院 | Intravenous injection liquid negative pressure distributor |
| CN101695593A (en) * | 2009-10-26 | 2010-04-21 | 吕海洋 | Core bar-free power injector |
| CN202589701U (en) * | 2012-04-25 | 2012-12-12 | 中国人民解放军第四军医大学 | Electrically-controlled piston type medicament injector |
| US20140288408A1 (en) * | 2011-10-11 | 2014-09-25 | Hospitech Respiration Ltd. | Pressure regulating syringe and method therefor |
| CN107519018A (en) * | 2017-09-30 | 2017-12-29 | 浙江华福医用器材有限公司 | A kind of portable dispenser |
| CN110025486A (en) * | 2018-01-12 | 2019-07-19 | 贝克顿·迪金森公司 | Pharmaceutical Dispensing System |
| WO2019243853A1 (en) * | 2018-06-22 | 2019-12-26 | Medovate Limited | Fluid delivery system |
| US20200069880A1 (en) * | 2017-05-19 | 2020-03-05 | Advcare Medical, Inc. | Sealed Medication Dispensing and Administering Device |
| CN110946759A (en) * | 2019-12-31 | 2020-04-03 | 王美娟 | Suction and spitting type intravenous medicine dispenser |
| CN212395397U (en) * | 2020-04-29 | 2021-01-26 | 南京市第一医院 | Negative pressure suction injector |
-
2020
- 2020-04-29 CN CN202010357724.7A patent/CN111419705A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2179142Y (en) * | 1993-04-02 | 1994-10-12 | 南京市第一医院 | Intravenous injection liquid negative pressure distributor |
| CN101695593A (en) * | 2009-10-26 | 2010-04-21 | 吕海洋 | Core bar-free power injector |
| US20140288408A1 (en) * | 2011-10-11 | 2014-09-25 | Hospitech Respiration Ltd. | Pressure regulating syringe and method therefor |
| CN202589701U (en) * | 2012-04-25 | 2012-12-12 | 中国人民解放军第四军医大学 | Electrically-controlled piston type medicament injector |
| US20200069880A1 (en) * | 2017-05-19 | 2020-03-05 | Advcare Medical, Inc. | Sealed Medication Dispensing and Administering Device |
| CN107519018A (en) * | 2017-09-30 | 2017-12-29 | 浙江华福医用器材有限公司 | A kind of portable dispenser |
| CN110025486A (en) * | 2018-01-12 | 2019-07-19 | 贝克顿·迪金森公司 | Pharmaceutical Dispensing System |
| WO2019243853A1 (en) * | 2018-06-22 | 2019-12-26 | Medovate Limited | Fluid delivery system |
| CN110946759A (en) * | 2019-12-31 | 2020-04-03 | 王美娟 | Suction and spitting type intravenous medicine dispenser |
| CN212395397U (en) * | 2020-04-29 | 2021-01-26 | 南京市第一医院 | Negative pressure suction injector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250022A (en) * | 2020-08-31 | 2021-01-22 | 深圳供电局有限公司 | Oil discharge recovery device for injector |
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