CN112755333A - Needleless atomizing injector - Google Patents
Needleless atomizing injector Download PDFInfo
- Publication number
- CN112755333A CN112755333A CN202110017697.3A CN202110017697A CN112755333A CN 112755333 A CN112755333 A CN 112755333A CN 202110017697 A CN202110017697 A CN 202110017697A CN 112755333 A CN112755333 A CN 112755333A
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- injection
- injector
- spring
- injection switch
- switch
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- 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
-
- 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
- A61J1/2075—Venting means for external 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
- A61J1/22—Arrangements for transferring or mixing fluids, e.g. from vial to syringe with means for metering the amount of fluid
-
- 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
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
-
- 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
- A61M5/31—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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2006—Having specific accessories
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Anesthesiology (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a needleless atomizing injector, wherein an injection safety switch device is arranged on an injector shell, a rear cover is arranged at the rear end of the injector shell, a medicine suction device is arranged at the front end of the injector shell, an injection switch button provided with an injection switch button spring is arranged on the rear cover, one end of the injection switch button spring is connected with the outside of the injection switch button, the other end of the injection switch button spring is connected with a shaft sleeve, the inside of the injection switch button is connected with one end of the injection limit switch spring, the other end of the injection limit switch spring is connected with the injection switch cover, the injector shell is internally provided with the shaft sleeve, the shaft sleeve is connected with a ram through the ram spring, and a pressurization. The invention completes the pressurizing and medicine absorbing processes simultaneously through the medicine absorbing device, the pressurizing limiting device limits the pressurizing and pushes the medicine in the injection needle tube, the injection safety switch device plays a safety role, the safety, the reliability and the flexibility of the use of the needleless atomizing injector are ensured, and the operation process is simplified.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a needleless atomizing injector.
Background
Currently, two methods are adopted for injection in the market: the traditional syringe with needle is an injection mode for injecting medicine into human body through a stainless steel needle head, and the injection mode easily causes subcutaneous and muscle tissue damage, produces cyst and even infection, not only has strong pain and patient discomfort, but also causes most patients (especially infants) to have fear. The accident of accidental breakage of the needle head is easy to happen in the injection process, a large amount of medicines injected through the metal needle head are concentrated at one point, the medicines form a lump at the injection part and are not easy to absorb, 160 hundred million needle heads are treated every year all over the world, and the sharp metal needle head is combined with various components such as a rubber piston and a plastic material, so that the environment pollution and the resource waste are caused to the human being. Along with the improvement of living standard of people, people using the needleless injector are more and more, and the needleless injector does not need to use a needle head, is a medical apparatus for applying high pressure to liquid medicine so as to enable the liquid medicine to be injected to the subcutaneous part of a patient through micropores at the end part, and can avoid the pain of the patient caused by acupuncture. Needleless injectors generally comprise a drug tube and a pusher, the drug tube has the function of containing liquid medicines, a drug tube shell and a piston inside the drug tube seal liquid medicines, and when the pusher pushes the piston to move, the liquid medicines are pressurized and are ejected at a high speed through micropores prefabricated at the front end of the drug tube to be injected into a human body. The medicine tube is generally required to be sterilized and used for a single time; the pusher is a device for providing power for the movement of the piston in the cartridge. The pusher generally does not require sterilization and can be used once or repeatedly.
Most of needleless injectors on the market at present adopt springs as power sources, a small part also adopts compressed gas, electromagnetism is used as a power source, the needleless injectors adopting the springs as the power sources need to be manually rotated to pressurize the injectors, then pressure is released to give liquid medicines, the appearance of the product is often smooth, the use can be limited when the hands of individuals are weak, the product is undoubtedly a burden for women, old people and people with small child strength, the product adopting the gas as the power source has large working noise, the use cost of the product is high, the product cannot be widely used, the product adopting the electromagnetic power source has a complex structure and low reliability, and faults are easy to occur.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a needleless atomizing injector which has simple structure, stable process, safety and reliability.
The technical scheme for solving the technical problems is as follows: the injection safety switch device is arranged on the injector shell, the rear end of the injector shell is provided with a rear cover, the front end of the injector shell is provided with a medicine suction device, the rear cover is provided with an injection switch button spring, one end of the injection switch button spring is connected with the outside of the injection switch button, the other end of the injection switch button spring is connected with a shaft sleeve, the inside of the injection switch button is connected with one end of an injection limit switch spring, the other end of the injection limit switch spring is connected with the injection switch cover, the inside of the injector shell is provided with the shaft sleeve, the shaft sleeve is connected with a striker through a striker spring.
The injection safety switch device of the invention is as follows: the injection safety button is connected with the stop block, a cylinder is arranged on the upper side of the arc-shaped plate, a first groove which is lapped with the cylinder of the stop block is processed on the injection switch button, the injection safety button is connected with one end of an injection safety spring, and the other end of the injection safety spring is connected with the bottom of a second groove of the shaft sleeve.
The first groove of the invention is a U-shaped groove.
The medicine suction device of the invention is as follows: the syringe shell is internally provided with a threaded sleeve, the threaded sleeve is provided with a syringe needle tube shell, and the syringe needle tube shell is internally provided with a push rod connected with one end of a collision rod.
The outer surfaces of the syringe needle tube shell and the thread insert are respectively marked with scale marks.
The invention relates to a pressurizing limiting device, which comprises: the injection switch inner sleeve is connected with the injection switch cover, the injection switch outer sleeve is arranged on the outer side of the injection switch inner sleeve and connected with the injection switch button, an inclined plane is machined on the inner circumference of the injection switch outer sleeve, round holes which are symmetrical to each other and are in lap joint with the balls are machined on the circumference of the injection switch inner sleeve, and third grooves in which the symmetrical balls move horizontally are machined on the shaft sleeve.
The injection switch outer sleeve is connected with the shaft sleeve through a limit pin.
The invention has the beneficial effects that:
(1) the invention adopts the anticlockwise rotation screw sleeve to realize the pressurization of the needleless atomizing injector, and transmits larger moment with the minimum force; the invention has the advantages of simple structure, stable process, safety and reliability, and is suitable for women, old people, children and other people with small strength.
(2) The scale marks are respectively marked on the outer surfaces of the syringe needle tube shell and the screw sleeve, so that the medicine suction amount can be conveniently and accurately read, air bubbles and gaps are formed in the syringe needle tube shell in the medicine suction process, or medicines suction dosage exceeding the required dosage, the air bubbles and the gaps are discharged or redundant dosage is discharged by rotating the screw sleeve anticlockwise, the operation is convenient and fast, other external medicine suction equipment is not needed, and the syringe needle is suitable for the old or people with poor eyesight.
(3) After the needleless atomizing injector is pressed, the elastic force borne by the spring of the striking rod is the largest, and the tail part of the push rod is always in matched connection with the tail part of the striking rod, so that the spring of the striking rod transmits all the elastic force to the push rod through the striking rod in each injection process, the force for penetrating and accelerating the ejected liquid medicine through the skin is the largest instantaneously, a good atomizing effect is formed, and the liquid medicine quickly penetrates and diffuses through the skin and reaches the proper depth of the skin.
(4) The invention adopts the injection safety switch device, ensures the passing and blocking functions of the injection switch button by pressing and loosening the injection safety button, realizes the limiting and safety functions of the injection switch button, ensures the safety and the reliability of the use of the needleless atomizing injector and avoids the misoperation phenomenon.
(5) The invention adopts the pressurizing limiting device, so that the striker can be effectively limited and easily released, the false triggering is avoided, the structure is simpler and more flexible, and the reliability and the safety of the operation of the whole device are ensured.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a sectional view a-a of the embodiment of fig. 2 during pressurization.
Fig. 4 is a sectional view a-a of the embodiment of fig. 2 during inhalation.
Fig. 5 is a cross-sectional view a-a of the injection process of the embodiment of fig. 2.
Fig. 6 is a bottom view of fig. 2.
Fig. 7 is a B-B sectional view of the embodiment of fig. 6 during inhalation.
Fig. 8 is a schematic perspective view of the injection switch knob 1 of fig. 3.
Fig. 9 is a schematic perspective view of the stopper 3 in fig. 3.
Fig. 10 is a schematic view of the construction of the bushing 6 of fig. 3.
Fig. 11 is a schematic view of the inner housing 16 of the injection switch of fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 11, the needleless atomizing injector of the present embodiment is formed by connecting an injection switch button 1, an injection switch button spring 2, an injection safety switch device, a shaft sleeve 6, an injector housing 7, a plunger spring 8, a medicine suction device, a plunger 12, an injection switch sleeve spring 13, a pressurization limiting device, an injection switch cover 17, an injection limiting switch spring 18, a rear cover 19, and a limiting pin 20.
An injection safety switch device is arranged on the injector shell 7 and is formed by connecting a stop block 3, an injection safety button 4 and an injection safety spring 5, and the injection safety switch device is characterized in that: install injection safety button 4 with dog 3 hookup on syringe shell 7, dog 3 installs the cylinder for the arc upside, installs injection shift knob 1 on the back lid 19, and processing has first recess an on the injection shift knob 1, and first recess an and dog 3's cylinder overlap joint, and first recess an is the U-shaped groove, and first recess an cooperation dog 3's removal realizes pressing and recovering of injection shift knob 1, has simple structure, the obvious reliable advantage of effect. The injection safety button 4 is connected with one end of the injection safety spring 5, the other end of the injection safety spring 5 is connected with the bottom of the second groove b of the shaft sleeve 6, the injection safety button 4 is pressed and loosened to ensure the passing and blocking functions of the injection switch button 1, the limiting and safety effects on the injection switch button 1 are realized, the safety and the reliability of the use of the needleless atomization injector are ensured, and the misoperation phenomenon is avoided. One end of the injection switch button spring 2 is connected with the outside of the injection switch button 1, the other end is connected with the shaft sleeve 6, the inside of the injection switch button 1 is connected with one end of an injection limit switch spring 18, and the other end of the injection limit switch spring 18 is connected with an injection switch cover 17.
The rear end of the injector shell 7 is provided with a rear cover 19, the front end is provided with a medicine suction device, the medicine suction device is formed by connecting a threaded sleeve 9, a push rod 10 and an injection needle tube shell 11, and the medicine suction device is as follows: connect through the screw thread in syringe shell 7 has swivel nut 9, swivel nut 9 can remove in syringe shell 7, install syringe needle tube 11 on the swivel nut 9, syringe needle tube 11, the surface of swivel nut 9 is marked with the scale mark respectively, be convenient for accurately read and inhale the dose, inhale 11 the inside of medicine in-process syringe needle tube 11 and have air bubble and clearance, or the medicine absorbs the dose that exceeds needs, through anticlockwise rotation swivel nut 9, exhaust air bubble and clearance or discharge unnecessary dose, the simple operation, need not with the help of other external medicine equipments of inhaling. The push rod 10 is installed in the syringe shell 11, the convex block on the push rod 10 is lapped with the groove at one end of the striking rod 12, so that in each injection process, the striking rod spring 8 transmits all elastic force to the push rod 10 through the striking rod 12, the struck liquid medicine penetrates through the skin, a good atomization effect is formed, and the liquid medicine quickly penetrates through the skin and is diffused to reach the proper depth of the skin.
Install axle sleeve 6 in the syringe shell 7, axle sleeve 6 is linked through lance spring 8 and lance 12, installs pressurization stop device on the axle sleeve 6, and pressurization stop device comprises injection switch overcoat 14, ball 15, the 16 hookups of injection switch endotheca, and pressurization stop device is: be provided with the injection switch endotheca 16 with injection switch lid 17 hookup on axle sleeve 6, injection switch endotheca 16 outside cover is equipped with injection switch overcoat 14, injection switch overcoat 14 is hookup with injection shift knob 1, injection switch overcoat 14 internal circumference processing has the inclined plane, 2 round holes d of mutual symmetry have evenly distributed processing on the injection switch endotheca 16 circumference, 2 round holes d overlap joint with 2 ball 15 respectively, processing has 2 third recess c of mutual symmetry on the axle sleeve 6, 2 ball 15 can be respectively at 2 third recess c horizontal migration, make and hit pole 12 can effectually by spacing and light release, the spurious triggering has been avoided, make the structure simpler and more nimble, the reliability and the security of whole device operation have been guaranteed. The injection switch outer sleeve 14 is movably connected with the shaft sleeve 6 through a limit pin 20.
The operation steps of this embodiment are as follows:
(1) pressurizing:
the screw sleeve 9 is rotated counterclockwise to drive the push rod 10 and the injection needle tube shell 11 to rotate leftwards and drive the ram 12 to move leftwards, when the head conical surface of the ram 12 is contacted with the ball 15, the head conical surface of the ram 12 pushes the ball 15 to move leftwards and drives the injection switch inner sleeve 16 and the injection switch cover 17 to move leftwards, the injection limit switch spring 18 is in a compressed state, when the ball 15 moves to the inner inclined surface of the injection switch outer sleeve 14, 2 balls 15 respectively move upwards and downwards along the inclined surface through the round hole d on the injection switch inner sleeve 16, the ram 12 passes through the ball 15 to continue moving leftwards, after the pressurization is stopped, because the ball 15 is not subjected to other external forces, the injection switch cover 17 and the injection switch inner sleeve 16 move rightwards under the thrust of the injection limit switch spring 18, the ball 15 leaves the inclined surface of the injection switch outer sleeve 14, and 2 round holes d on, The upper part is contacted with the inner end surface of the head part of the plunger 12, the head part of the plunger 12 is hung by the ball 15, the injection switch cover 17 is restored, the plunger spring 8 is in a compressed state under the action of the plunger 12, and the pressurizing process is completed.
(2) Medicine suction:
one end of a push rod 10 is connected with a collision rod 12, a medicine bottle is arranged at the head of a syringe needle tube shell 11 through an adapter, a screw sleeve 9 is rotated clockwise to drive the syringe needle tube shell 11 to move rightwards to suck medicine, and the scale marks on the syringe needle tube shell 11 are observed to suck the needed medicine dose.
(3) And (3) injection:
the injection safety button 4 is pressed downwards to drive the stop block 3 to move downwards, the injection switch button 1 is pressed rightwards, a cylinder of the stop block 3 is in lap joint with a first groove a of the injection switch button 1, the injection switch outer sleeve 14 moves rightwards, the injection switch sleeve spring 13 is in a compressed state, 2 balls 15 move upwards and downwards along an inclined plane through a round hole d in an injection switch inner sleeve 16 respectively, the impact rod 12 is not blocked by the balls 15 to move rightwards, the impact rod 12 pops rightwards under the elastic force of the impact rod spring 8 to push the push rod 10 to move rightwards, medicine in the injection needle tube shell 11 is pushed out completely instantly, the injected liquid medicine penetrates through the skin to complete injection, and the injection switch button 1 and the injection safety button 4 are restored under respective spring acting forces after injection is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (7)
1. A needleless atomizing injector characterized by: an injection safety switch device is arranged on an injector shell (7), a rear cover (19) is arranged at the rear end of the injector shell (7), a medicine suction device is arranged at the front end of the injector shell, an injection switch button (1) provided with an injection switch button spring (2) is arranged on the rear cover (19), one end of the injection switch button spring (2) is connected with the outside of the injection switch button (1), the other end of the injection switch button spring is connected with a shaft sleeve (6), the inside of the injection switch button (1) is connected with one end of an injection limit switch spring (18), the other end of the injection limit switch spring (18) is connected with an injection switch cover (17), the shaft sleeve (6) is arranged in the injector shell (7), the shaft sleeve (6) is connected with a collision rod (12) through a collision rod spring (8), and a pressurization limit device is arranged on the shaft.
2. The needleless atomizing injector of claim 1, wherein said safety injection switch means is: an injection safety button (4) connected with the stop block (3) is arranged on the injector shell (7), a cylinder is arranged on the upper side of the arc-shaped plate of the stop block (3), a first groove (a) lapped with the cylinder of the stop block (3) is processed on the injection switch button (1), the injection safety button (4) is connected with one end of an injection safety spring (5), and the other end of the injection safety spring (5) is connected with the bottom of a second groove (b) of the shaft sleeve (6).
3. The needleless atomizing injector of claim 2, wherein said first recess (a) is a U-shaped groove.
4. The needleless atomizing injector of claim 1, wherein said drug delivery device is: a screw sleeve (9) is arranged in the injector shell (7), a syringe needle tube shell (11) is arranged on the screw sleeve (9), and a push rod (10) connected with one end of a striking rod (12) is arranged in the syringe needle tube shell (11).
5. The needle-free atomizing injector in accordance with claim 4, wherein: the outer surfaces of the injection needle tube shell (11) and the thread sleeve (9) are respectively marked with scale marks.
6. The needleless atomizing injector of claim 1, wherein said pressurizing and position-limiting means is: an injection switch inner sleeve (16) connected with an injection switch cover (17) is arranged on the shaft sleeve (6), an injection switch outer sleeve (14) is arranged on the outer side of the injection switch inner sleeve (16), the injection switch outer sleeve (14) is connected with an injection switch button (1), an inclined plane is processed on the inner circumference of the injection switch outer sleeve (14), round holes (d) which are mutually symmetrical and lapped with the balls (15) are processed on the circumference of the injection switch inner sleeve (16), and third grooves (c) which are mutually symmetrical and enable the balls (15) to horizontally move are processed on the shaft sleeve (6).
7. The needle-free atomizing injector in accordance with claim 6, wherein: the injection switch outer sleeve (14) is connected with the shaft sleeve (6) through a limit pin (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017697.3A CN112755333B (en) | 2021-01-07 | 2021-01-07 | Needleless atomizing injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017697.3A CN112755333B (en) | 2021-01-07 | 2021-01-07 | Needleless atomizing injector |
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| Publication Number | Publication Date |
|---|---|
| CN112755333A true CN112755333A (en) | 2021-05-07 |
| CN112755333B CN112755333B (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110017697.3A Active CN112755333B (en) | 2021-01-07 | 2021-01-07 | Needleless atomizing injector |
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| CN (1) | CN112755333B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114917431A (en) * | 2022-05-17 | 2022-08-19 | 北京快舒尔医疗技术有限公司 | Syringe body and syringe having the same |
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| CN103285500A (en) * | 2008-09-23 | 2013-09-11 | 麦克内尔-Ppc股份有限公司 | Pre-filled applicator device |
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| CN105498044A (en) * | 2016-01-13 | 2016-04-20 | 北京步腾医学科技有限公司 | Disposable pneumatic needleless injector and using method thereof |
| CN211272891U (en) * | 2019-09-30 | 2020-08-18 | 陕西安信医学技术开发有限公司 | Intelligent painless injection hand-held machine |
| CN212214316U (en) * | 2020-04-28 | 2020-12-25 | 温州大学 | Pulse type needleless injector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114917431A (en) * | 2022-05-17 | 2022-08-19 | 北京快舒尔医疗技术有限公司 | Syringe body and syringe having the same |
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| CN112755333B (en) | 2022-05-31 |
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