CN111481774B - Needleless syringe for trace medicine - Google Patents
Needleless syringe for trace medicine Download PDFInfo
- Publication number
- CN111481774B CN111481774B CN201910072278.2A CN201910072278A CN111481774B CN 111481774 B CN111481774 B CN 111481774B CN 201910072278 A CN201910072278 A CN 201910072278A CN 111481774 B CN111481774 B CN 111481774B
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- magnetic core
- main cylinder
- main
- barrel
- 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.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31525—Dosing
- A61M5/31531—Microsyringes, e.g. having piston bore diameter close or equal to needle shaft diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2026—Semi-automatic, e.g. user activated piston is assisted by additional source of energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (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 micro-drug needleless injector which comprises a main cylinder body, an auxiliary cylinder body and an ampoule seat, wherein the ampoule seat is arranged at the head end of the main cylinder body, a fixed cover is arranged at the tail end of the main cylinder body, the auxiliary cylinder body is fixedly arranged on the fixed cover, the main cylinder body and the auxiliary cylinder body are respectively provided with a hollow inner cavity, the two inner cavities are mutually communicated through a movable channel, a magnetic core is arranged in the inner cavity of the main cylinder body, and the upper end of the magnetic core is connected with a first connecting piece. The invention can make the magnetic core obtain very high initial acceleration through two-stage energy storage acceleration, shorten the stroke and reduce the whole volume; the invention takes spring driving as the main part and high-pressure gas driving as the auxiliary part, and can be normally used in a low-pressure environment, thereby having strong universality; meanwhile, the reset energy storage or the energy release of the spring is realized by controlling the electrifying or discharging of the magnetic core, and the operation is simple.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a micro-drug needleless injector.
Background
The needleless injection technology is that when the medicine is injected, the liquid medicine directly enters the organism tissue in a mode of jetting high-pressure jet flow in a superfine, high-speed and straight line way without the help of a needle, so that a series of problems caused by the penetration of the needle into the organism in the traditional injection are solved, such as: pain, bleeding, infection, tissue damage, psychological stress in the patient, etc.; meanwhile, the medicine injected by the needleless injection is more dispersed in the tissue, so that the medicine is easy to absorb, and the skin is not easy to harden after long-time injection. Therefore, the needleless injection technology has wide application prospect, and is especially suitable for children vaccination and diabetics. A step of
In the prior art, the power device of the needleless injector is generally divided into three types of spring mechanical driving, high-pressure gas driving and electromagnetic power driving, and the spring mechanical type has the defects that the spring is inconvenient to reset and operate, an additional fastening structure is required to be added, the high-pressure gas driving is inconvenient to use in a plateau area, the applicability is low, and the electromagnetic power driving needs a longer stroke for acceleration, so that the equipment volume is larger.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a micropharmaceutical needleless injector with a simple structure, convenient resetting operation and a wide application range
In order to achieve the above and other related objects, the present invention provides a micro-drug needleless injector, comprising a main cylinder, an auxiliary cylinder and an ampoule seat, wherein the head end of the main cylinder is provided with the ampoule seat, the tail end of the main cylinder is provided with a fixed cover, the auxiliary cylinder is fixedly arranged on the fixed cover, the main cylinder and the auxiliary cylinder are both provided with hollow inner cavities and are mutually communicated through a movable channel, a magnetic core is arranged in the inner cavity of the main cylinder, the upper end of the magnetic core is connected with a first connecting piece, the upper end of the magnetic core is connected with the inner cavity wall at the top of the main cylinder through a first spring, the first spring is sleeved outside the first connecting piece, the inner cavity of the auxiliary cylinder is provided with a piston block, the bottom of the piston block is connected with a second connecting piece, and the first connecting piece and the second connecting piece are movably inserted in the movable channel and are elastically connected through a second spring; the coil is arranged on the side wall of the inner cavity of the main cylinder body in a surrounding mode around the magnetic core, and the coil is electrified or powered off through a control button arranged on the outer side of the main cylinder body.
Preferably, a through groove is formed in the outer side of the auxiliary cylinder body, an elastic piston is arranged in the through groove, and the elastic piston moves in the through groove through a compression bar with one end hinged to the fixed cover.
Preferably, the tail end of the auxiliary cylinder body is also provided with an air inlet one-way valve and an air outlet plug.
Preferably, a medicine cavity is arranged in the ampoule seat, a piston rod is inserted in the medicine cavity, and the piston rod extends into the inner cavity of the main cylinder body and is coaxially arranged with the magnetic core.
Preferably, when the coil is electrified, the magnetic core moves up to the top of the inner cavity of the main cylinder body and keeps a distance from the piston rod; when the coil is powered off, the magnetic core moves downwards to the bottom of the inner cavity of the main cylinder body to push the piston rod to move in the medicine cavity.
Preferably, the auxiliary cylinder body is provided with a sealing ring at the installation part of the fixed cover.
Compared with the prior art, the invention has the beneficial effects that: the magnetic core and the first spring are arranged on the main cylinder body to form a first-stage acceleration mechanism, an auxiliary cylinder body for compressed air is additionally arranged, the piston block and the second spring form a second-stage acceleration mechanism, the magnetic core can obtain high initial acceleration through two-stage energy storage acceleration, the stroke is shortened, and the whole volume is reduced; the invention takes spring driving as the main part and high-pressure gas driving as the auxiliary part, and can be normally used in a low-pressure environment, thereby having strong universality; meanwhile, the coil is arranged on the periphery of the magnetic core, and reset energy storage or energy release of the spring is realized by controlling the electrifying or discharging of the magnetic core, so that the operation is simple.
Drawings
The invention will be described in further detail with reference to the drawings and the specific embodiments.
Fig. 1 is a schematic structural view of a micropharmaceutical needleless injector provided by the invention.
Wherein, the reference numerals specifically explain as follows: the ampoule holder comprises a main cylinder body 1, a secondary cylinder body 2, an ampoule holder 3, a fixed cover 4, a magnetic core 5, a first connecting piece 6, a first spring 7, a piston block 8, a second connecting piece 9, a second spring 10, a coil 11, a control button 12, an elastic piston 13, a compression rod 14, an air inlet one-way valve 15, an air outlet plug 16 and a piston rod 17.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or adjustments of size, which would otherwise be used in the practice of the present invention, would be apparent to those skilled in the art without departing from the spirit and scope of the present invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
As shown in fig. 1, the invention provides a micro-drug needleless injector, which comprises a main cylinder body 1, an auxiliary cylinder body 2 and an ampoule seat 3, wherein the ampoule seat 3 is arranged at the head end of the main cylinder body 1, a fixed cover 4 is arranged at the tail end of the main cylinder body 1, the auxiliary cylinder body 2 is fixedly arranged on the fixed cover 4, a drug cavity is arranged in the ampoule seat 3, a piston rod 17 is inserted in the drug cavity, and the piston rod 17 extends into the inner cavity of the main cylinder body 1 and is coaxially arranged with a magnetic core 5. When the magnetic core 5 pushes the piston rod 17 to move forwards, the medicine in the medicine cavity can be extruded for injection.
The main cylinder body 1 and the auxiliary cylinder body 2 are provided with hollow inner cavities, the two inner cavities are mutually communicated through a movable channel, a magnetic core 5 is arranged in the inner cavity of the main cylinder body 1, the upper end of the magnetic core 5 is connected with a first connecting piece 6, the upper end of the magnetic core 5 is connected with the inner cavity wall at the top of the main cylinder body 1 through a first spring 7, the first spring 7 is sleeved on the outer side of the first connecting piece 6, and when the magnetic core 5 moves up to the top of the inner cavity of the main cylinder body 1, the first spring 7 is compressed to form primary acceleration energy storage; the inner cavity of the auxiliary cylinder body 2 is internally provided with a piston block 8, the bottom of the piston block 8 is connected with a second connecting piece 9, the first connecting piece 6 and the second connecting piece 9 are movably inserted in the movable channel and are elastically connected through a second spring 10, the outer side of the auxiliary cylinder body 2 is provided with a through groove, an elastic piston 13 is arranged in the through groove, the elastic piston 13 is hinged to a compression rod 14 on the fixed cover 4 through one end to move in the through groove, the compression plate 14 is continuously pressed to charge compressed air into the inner cavity of the auxiliary cylinder body 2, at the moment, the piston block 8 moves downwards under the action of gas pressure, and the second spring 10 is compressed to form secondary acceleration energy storage.
The coil 11 is circularly arranged on the side wall of the inner cavity of the main cylinder body 1 around the magnetic core 5, the coil 11 is electrified or powered off through the control button 12 arranged on the outer side of the main cylinder body 1, and when the coil 11 is electrified, the magnetic core 5 moves upwards to the top of the inner cavity of the main cylinder body 1 under the action of electromagnetic force to keep a distance from the piston rod 17; when the coil 11 is powered off, the magnetic core 5 is instantly moved downwards to the bottom of the inner cavity of the main cylinder 1 by the elastic force of the two-stage power accumulating spring so as to push the piston rod 17 to move in the medicine cavity.
The tail end of the auxiliary cylinder body 2 is also provided with an air inlet one-way valve 15 and an air outlet plug 16.
The auxiliary cylinder body 2 is provided with a sealing ring at the installation part of the fixed cover 4 to ensure the air tightness.
In specific implementation, the control button 12 is pressed down, the coil 11 is electrified, the magnetic core 5 is upwards moved to the top of the inner cavity of the main cylinder body 1 under the action of electromagnetic force to keep a distance from the piston rod 17, at the moment, the first spring 7 is compressed to start primary acceleration energy storage, then the pressing plate 14 is continuously pressed, compressed air is continuously filled into the inner cavity of the auxiliary cylinder body 2, at the moment, the piston block 8 is downwards moved under the action of gas pressure, the second spring 10 is compressed to start secondary acceleration energy storage, after the energy storage is completed, the control button 12 is pressed down again, the coil 11 is powered off, the magnetic core 5 is not subjected to electromagnetic resistance, the first spring 7 and the second spring 10 simultaneously release elastic potential energy to jointly act on the magnetic core 5, and the magnetic core falls to the bottom of the inner cavity of the main cylinder body 1 at a high speed to drag the piston rod 17, so that medicine in the medicine cavity is sprayed out at a high speed to realize injection.
In conclusion, the magnetic core can obtain very high initial acceleration through two-stage energy storage acceleration, the stroke is shortened, and the whole volume is reduced; the invention takes spring driving as the main part and high-pressure gas driving as the auxiliary part, and can be normally used in a low-pressure environment, thereby having strong universality; meanwhile, the reset energy storage or the energy release of the spring is realized by controlling the electrifying or discharging of the magnetic core, and the operation is simple. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (2)
1. The utility model provides a micro-drug needleless injector, its characterized in that includes main barrel (1), vice barrel (2) and ampoule seat (3), install the head end of main barrel (1) ampoule seat (3), the end of main barrel (1) is equipped with fixed cover (4), vice barrel (2) fixed mounting in on fixed cover (4), main barrel (1) and vice barrel (2) all have cavity inner chamber and two inner chambers are through seting up the mutual intercommunication of movable passageway, be equipped with magnetic core (5) in the inner chamber of main barrel (1), the upper end of magnetic core (5) is connected with first connecting piece (6), the upper end of magnetic core (5) is connected with the inner chamber wall at main barrel (1) top through first spring (7) just first spring (7) cover is located the outside of first connecting piece (6), be equipped with piston block (8) in the inner chamber of vice barrel (2), the bottom of piston block (8) is connected with second connecting piece (9), first connecting piece (6) and second connecting piece (10) are located through the movable connection between two in the second movable passageway; a coil (11) is arranged on the side wall of the inner cavity of the main cylinder body (1) in a surrounding way around the magnetic core (5), and the coil (11) is electrified or powered off through a control button (12) arranged on the outer side of the main cylinder body (1); the outer side of the auxiliary cylinder body (2) is provided with a through groove, an elastic piston (13) is arranged in the through groove, and the elastic piston (13) moves in the through groove through a pressing rod (14) with one end hinged on the fixed cover (4); the tail end of the auxiliary cylinder body (2) is also provided with an air inlet one-way valve (15) and an air outlet plug (16); a medicine cavity is arranged in the ampoule seat (3), a piston rod (17) is inserted in the medicine cavity, and the piston rod (17) stretches into the inner cavity of the main cylinder body (1) and is coaxially arranged with the magnetic core (5); when the coil (11) is electrified, the magnetic core (5) moves upwards to the top of the inner cavity of the main cylinder (1) and keeps a distance from the piston rod (17); when the coil (11) is powered off, the magnetic core (5) moves downwards to the bottom of the inner cavity of the main cylinder body (1) to push the piston rod (17) to move in the medicine cavity.
2. A micro-drug needleless injector as in claim 1, in which: the auxiliary cylinder body (2) is provided with a sealing ring at the installation part of the fixed cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072278.2A CN111481774B (en) | 2019-01-25 | 2019-01-25 | Needleless syringe for trace medicine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072278.2A CN111481774B (en) | 2019-01-25 | 2019-01-25 | Needleless syringe for trace medicine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111481774A CN111481774A (en) | 2020-08-04 |
| CN111481774B true CN111481774B (en) | 2023-06-09 |
Family
ID=71796223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910072278.2A Active CN111481774B (en) | 2019-01-25 | 2019-01-25 | Needleless syringe for trace medicine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111481774B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113082393B (en) * | 2021-04-14 | 2022-07-22 | 郑州万辉医疗设备有限公司 | Automatic needle inserting and assisting device for injection needle |
| CN114870163B (en) * | 2022-06-06 | 2023-12-19 | 江苏乐聚医药科技有限公司 | Air spring mixed needleless injector |
| CN115154765B (en) * | 2022-06-17 | 2023-10-20 | 江苏乐聚医药科技有限公司 | Pedal energy storage device for needleless injector |
| CN115154766B (en) * | 2022-06-21 | 2023-10-20 | 江苏乐聚医药科技有限公司 | Self-energizing device for needleless injector |
| CN119280573A (en) * | 2024-10-22 | 2025-01-10 | 卓优医疗(苏州)有限公司 | A method, device, injection equipment and medium based on multi-phase capacitor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB798826A (en) * | 1954-08-27 | 1958-07-30 | Z & W Machine Products Inc | Improvements in needle-less hypodermic injectors |
| US2921582A (en) * | 1953-02-11 | 1960-01-19 | Nat Res Dev | Hypodermic injection apparatus |
| EP0406778A1 (en) * | 1989-07-05 | 1991-01-09 | Erdélyi Dr. Dipl.-Ing. Gyula | Needleless inoculator |
| US5599302A (en) * | 1995-01-09 | 1997-02-04 | Medi-Ject Corporation | Medical injection system and method, gas spring thereof and launching device using gas spring |
| WO1998015307A1 (en) * | 1996-10-09 | 1998-04-16 | Equidyne Systems,Inc. | Hypodermic jet injector |
| WO2004101025A2 (en) * | 2003-05-09 | 2004-11-25 | Intravacc, Inc. | Needle free hypodermic injector and ampule for intradermal, subcutaneous and intramuscular injection |
| JP2008086689A (en) * | 2006-10-05 | 2008-04-17 | Shimadzu Corp | Needleless syringe |
| CN101690834A (en) * | 2009-10-29 | 2010-04-07 | 陈凯 | Continuous needleless injection system driven by electromagnetic force |
| CN103977483A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Electromagnetic energy storage type needleless injector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006057636A1 (en) * | 2004-11-22 | 2006-06-01 | Intelliject, Llc | Devices, systems, and methods for medicament delivery |
| US8616474B2 (en) * | 2011-09-09 | 2013-12-31 | Continental Automotive Systems, Inc. | High flow outward opening gaseous injector for automotive applications |
| CN103977484A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Pneumatic magnetic energy storage needleless syringe |
| CN103977480B (en) * | 2014-05-14 | 2016-06-15 | 苏州大学张家港工业技术研究院 | A kind of manually driven energy-storage type needleless injector |
| CN206621620U (en) * | 2016-07-29 | 2017-11-10 | 沈良骐 | Pneumatic needle-free injection device |
-
2019
- 2019-01-25 CN CN201910072278.2A patent/CN111481774B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2921582A (en) * | 1953-02-11 | 1960-01-19 | Nat Res Dev | Hypodermic injection apparatus |
| GB798826A (en) * | 1954-08-27 | 1958-07-30 | Z & W Machine Products Inc | Improvements in needle-less hypodermic injectors |
| EP0406778A1 (en) * | 1989-07-05 | 1991-01-09 | Erdélyi Dr. Dipl.-Ing. Gyula | Needleless inoculator |
| US5599302A (en) * | 1995-01-09 | 1997-02-04 | Medi-Ject Corporation | Medical injection system and method, gas spring thereof and launching device using gas spring |
| WO1998015307A1 (en) * | 1996-10-09 | 1998-04-16 | Equidyne Systems,Inc. | Hypodermic jet injector |
| WO2004101025A2 (en) * | 2003-05-09 | 2004-11-25 | Intravacc, Inc. | Needle free hypodermic injector and ampule for intradermal, subcutaneous and intramuscular injection |
| JP2008086689A (en) * | 2006-10-05 | 2008-04-17 | Shimadzu Corp | Needleless syringe |
| CN101690834A (en) * | 2009-10-29 | 2010-04-07 | 陈凯 | Continuous needleless injection system driven by electromagnetic force |
| CN103977483A (en) * | 2014-05-14 | 2014-08-13 | 苏州大学张家港工业技术研究院 | Electromagnetic energy storage type needleless injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111481774A (en) | 2020-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111481774B (en) | Needleless syringe for trace medicine | |
| CN110292684B (en) | Double-pressure needleless injector capable of filling medicine once and injecting multiple times | |
| CN101554498B (en) | Needleless injection system used for continuously injecting animals | |
| WO2003068296A3 (en) | Needleless injector | |
| CN104399155B (en) | The pneumatic continuous needleless syringe of gas control sliding spool valve control | |
| PL1715903T3 (en) | Injection device | |
| CN110279914B (en) | Needleless injector capable of filling medicine once and injecting multiple times | |
| CN203861700U (en) | Pneumatic magnetic energy storage type needleless injector | |
| CN211157851U (en) | Double-pressure needleless injector with one-time charging and multiple times of injection | |
| CN103977484A (en) | Pneumatic magnetic energy storage needleless syringe | |
| GB991894A (en) | Hypodermic injector | |
| CN117504053B (en) | Medicine tube for needle-free injection and needle-free injection including the medicine tube | |
| CN210494792U (en) | A syringe for painless plastic | |
| CN203861698U (en) | Pneumatic energy storage type needleless injector | |
| CN105709311A (en) | Needleless injector based on piezoelectric conversion and using method of needleless injector | |
| CN214762656U (en) | Reduce remaining syringe piston structure | |
| CN211157852U (en) | Needle-free syringe for multiple injections with one charge | |
| CN103977481A (en) | Pneumatic energy storage needleless syringe | |
| CN103191494A (en) | Pneumatic impact system with digital display screen | |
| CN117379643A (en) | Deoxycholic acid injection device | |
| CN106362250B (en) | Micro-array injector | |
| CN202740611U (en) | Gun-shaped cervix applicator | |
| CN203043169U (en) | Medical pressure injection syringe | |
| WO2012092715A1 (en) | Magnetic damping pneumatic impact type needless injector | |
| CN111803763A (en) | Capacitive high voltage energy storage medical electromagnetic injector |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |