CN215916013U

CN215916013U - Needleless injection gun

Info

Publication number: CN215916013U
Application number: CN202121031849.7U
Authority: CN
Inventors: 陈虹; 王营; 张昱
Original assignee: 980th Hospital of the Joint Logistics Support Force of PLA
Current assignee: 980th Hospital of the Joint Logistics Support Force of PLA
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-03-01
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a needleless injection gun, which belongs to the technical field of medical instruments and comprises a gun body embedded with a high-pressure gas cylinder and an injection tube for accommodating the medicine cylinder, wherein the rear part of the gun body is provided with a gas supply assembly for opening the high-pressure gas cylinder; the injection pipe front end is equipped with the jet, and the syringe is equipped with the injection subassembly that is used for propelling movement medicament with the rifle body juncture, and the injection subassembly passes through the air flue with gas cylinder and links to each other, and the injection subassembly can be under the high-pressure gas promotion with the interior high-speed propelling movement of medicament of medicine bottle, accomplish the injection. High-pressure gas in the high-pressure gas bottle acts on the injection assembly along the gas passage, and the medicine in the medicine bottle is pushed out at high speed through the injection assembly and injected into the machine body to complete needleless injection. The utility model is suitable for battlefield first aid or emergency rescue, and saves the operation of injecting liquid medicine; when in injection, the injector is contacted with the body, and the medicine bottle is discarded after use, so that the replacement is convenient. The utility model can save the battlefield first-aid operation process, is convenient to carry and can inject quickly, conveniently and quickly.

Description

Needleless injection gun

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a needleless injection gun.

Background

Currently, most drugs and biologics are injected subcutaneously and intramuscularly using needle syringes, a generally recognized safe and effective method of administering medication that requires drawing the medication into the syringe, is commonly available. However, when the first aid is carried out on the battlefield or in the field training process of troops, the injection mode has the defect of complex operation due to the time urgency, and is not suitable for the field or battlefield first aid battlefield. In view of the above, there is a need to develop an injection method that can save the battlefield emergency operation procedure, and is convenient to carry and rapid and convenient to inject.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a needle-free injection gun is provided, and aims to solve the technical problem that a needle injector in the prior art is not suitable for emergency treatment such as battlefield first aid.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a needleless injection gun comprises a gun body embedded with a high-pressure gas cylinder and an injection tube capable of containing the gas cylinder, wherein the rear part of the gun body is provided with a gas supply assembly for opening the high-pressure gas cylinder; the front end of the injection tube is provided with a jet orifice, an injection assembly for pushing the medicament is arranged at the junction of the injection tube and the gun body, the injection assembly is connected with the high-pressure gas cylinder through a gas passage, and the injection assembly can push out the medicament in the medicament bottle at high speed under the pushing of high-pressure gas to complete injection.

Preferably, the air supply assembly comprises a button and an exhaust valve, the exhaust valve is arranged at an air outlet of the high-pressure air bottle and connected with the air passage, the button is connected with the exhaust valve through a pressure spring, and a sliding groove matched with the button and the pressure spring is arranged at the rear end of the gun body; the bottom of the gun body is provided with a mounting groove for accommodating a high-pressure gas cylinder, and the sliding groove is communicated with the mounting groove.

Preferably, the open end of the mounting groove is clamped with a cover plate, and the cover plate is connected with the gun body through a clamping structure; the rear part of the gun body is also provided with a pressure gauge connected with the air passage.

Preferably, the injection assembly comprises a trigger, a return spring and a manual retraction lever, the trigger being disposed below the syringe; the other end of the air passage is connected with a return spring through a top push plate, and the tail end of the air passage is provided with an opening and closing mechanism connected with a trigger; the other end of the reset spring is connected with the manual retraction rod, and a piston rod which can be in sliding fit with the inner wall of the medicine bottle is fixed on the other side of the manual retraction rod.

Preferably, the front part of the injection tube is a drug tube bin for containing a drug bottle, and a window for taking and placing the drug bottle is arranged on the upper surface or the side surface of the drug tube bin; reset spring, manual withdrawal pole and piston rod all set up in the rear portion in medicine pipe storehouse.

Preferably, a shield is arranged at the opening window and connected with the side wall of the injection tube.

Preferably, the opening and closing mechanism comprises a blocking plate, a tension spring and a pull wire, two ends of the tension spring are respectively connected with the blocking plate and the pull wire, the other end of the pull wire is connected with a slider at the rear end of the trigger, and a sliding groove for installing a return spring, the slider and the trigger is formed in the side wall of the gun body; the inside of the rifle body is equipped with and is used for with closure plate assorted lift slide, the lift of closure plate is used for the shutoff and opens the air flue.

Preferably, the rear end of the medicine bottle is provided with a bottle plug, and the front end of the medicine bottle is provided with a sealing head for plugging the outlet of the medicine bottle.

Preferably, the medicine bottle is a plastic bottle, a cap is arranged at the rear end of the medicine bottle, a groove matched with the tail of the medicine bottle is formed in one end of the cap, and the cap is tightly matched with the outer wall of the tail of the medicine bottle.

Preferably, the medicine bottle is the medicine material, head and medicine bottle injection moulding as an organic whole, the head can be twisted off and the plastic bottle separation.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model has the advantages that the high-pressure gas cylinder is opened, the high-pressure gas acts on the injection assembly along the gas passage in the gun body, and the medicine in the medicine bottle is pushed out at high speed through the injection assembly and injected into the machine body to finish the needleless injection. The utility model can realize quick injection without extracting the traditional Chinese medicine in the medicine bottle; meanwhile, the injection is carried out by utilizing the utility model, the injector is contacted with a human body, and the medicine bottle is discarded after being used up, so that the replacement is convenient, and the safety of administration is ensured. In addition, the utility model can save the battlefield first-aid operation process, is convenient to carry and inject, and has convenient maintenance and long service life.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a needleless injection gun in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a vial used in the present invention;

in the figure: 1-high pressure gas cylinder, 2-gun body, 3-medicine bottle, 4-injection tube, 5-injection port, 6-air passage, 7-button, 8-exhaust valve, 9-compression spring, 10-installation groove, 11-cover plate, 12-trigger, 13-reset spring, 14-manual retraction rod, 15-pushing plate, 16-piston rod, 17-shield, 18-blocking plate, 19-tension spring, 20-pull wire, 21-slide block, 22-bottle plug, 23-seal head, 24-cap and 25-pressure gauge.

Detailed Description

The technical solutions in the embodiments of the present invention are 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.

The needleless injection gun as shown in fig. 1 comprises a gun body 2 embedded with a high-pressure gas cylinder 1 and an injection tube 4 capable of containing a medicine bottle 3, wherein the rear part of the gun body 2 is provided with an air supply assembly for opening the high-pressure gas cylinder 1, and the high-pressure gas cylinder 1 is arranged in the gun body 2; the front end of the injection tube 4 is provided with a medical injection port 5 contacting with the skin, an injection assembly used for pushing the medicament is arranged at the junction of the injection tube 4 and the gun body 2, the injection assembly is connected with the high-pressure gas bottle 1 through a gas passage 6, and the injection assembly can push out the medicament in the medicine bottle 3 at a high speed under the pushing of high-pressure gas to complete injection. Wherein, the gas in the high-pressure gas cylinder is high-pressure carbon dioxide gas, and compressed nitrogen can also be selected. By adopting the scheme, the injection pain can be reduced, the medicament injection can be completed quickly and effectively, the treatment time is saved, and the device is suitable for battlefield first aid. During injection, only the injection port of the injector is in contact with the body, and nothing can enter the skin, so that the safety of administration is ensured; the medicine bottle is discarded after being used up, and the medicine bottle is convenient to replace.

In an embodiment of the present invention, as shown in fig. 1, the air feeding assembly includes a button 7 and an exhaust valve 8, the exhaust valve 8 is disposed at an air outlet of the high pressure gas cylinder 1 and connected to the air passage 6, the button 7 is connected to the exhaust valve 8 through a compression spring 9, and a sliding groove for matching the button 7 and the compression spring 9 is disposed at a rear end of the gun body 2; the bottom of the gun body 2 is provided with a mounting groove 10 for accommodating the high-pressure gas bottle 1, and the sliding groove is communicated with the mounting groove 10; the rear part of the gun body 2 is also provided with a pressure gauge 25 connected with the air passage 6. The longitudinal section of the button 7 is T-shaped, and the protruding end of the button is arranged outside the sliding groove, so that the operation is convenient.

Further optimize above-mentioned technical scheme, as shown in fig. 1, the open end joint of mounting groove 10 has apron 11, apron 11 passes through the joint structure and links to each other with the rifle body 2. The clamping structure can be a clamping fixing structure which is similar to a battery cover on an electric appliance and is provided with a bulge on the side surface of the cover plate and a clamping groove on the side wall of the mounting groove. Or, the one end of apron is articulated with the mounting groove lateral wall, and the other end passes through buckle and another lateral wall joint of mounting groove. By adopting the structure, the cover plate is convenient to open and the high-pressure gas cylinder is convenient to replace. In addition, the spring is installed on the inner wall of the installation groove, so that the high-pressure gas cylinder can be clamped in the installation groove, and the stability of the high-pressure gas cylinder is ensured.

In one embodiment of the present invention, as shown in FIG. 1, the injection assembly includes a trigger 12, a return spring 13 and a manual retraction lever 14, the trigger 12 being disposed below the syringe 4; the other end of the air passage 6 is connected with a return spring 13 through a push plate 15, and the tail end of the air passage 6 is provided with an opening and closing mechanism connected with a trigger 12; the other end of the return spring 13 is connected with a manual retraction rod 14, and a piston rod 16 which can be in sliding fit with the inner wall of the medicine bottle 3 is fixed on the other side of the manual retraction rod 14. The front part of the injection tube 4 is a medicine tube bin for accommodating the medicine bottle 3, and a window for taking and placing the medicine bottle 3 is arranged on the upper surface or the side surface of the medicine tube bin; the return spring 13, the manual retraction rod 14 and the piston rod 16 are all arranged at the rear part of the medicine tube bin. The high-pressure gas compresses the reset spring through the pushing plate, the manual retraction rod is pushed forwards, and then the medicine in the medicine bottle is pushed to be sprayed forwards through the piston rod. After injection, the manual retraction rod can be pulled backwards to drive the piston rod to retract, so that the medicine bottle is convenient to replace.

In the injection process, in order to ensure that the medicine bottle is firmly fixed in the medicine tube bin and prevent the medicine bottle from being polluted by the outside, a protective cover 17 is arranged at the opening, and the protective cover 17 is connected with the side wall of the injection tube 4. The protective cover can be hinged with the side wall of the injection tube, or an arc chute is arranged on the side wall of the injection tube and is in rotating sliding fit with the injection tube. The protective cover is opened, and the medicine bottle can be taken and placed from the opening window, so that the medicine bottle taking device is convenient and fast.

In a specific embodiment of the present invention, as shown in fig. 1, the opening and closing mechanism includes a blocking plate 18, a tension spring 19 and a pull wire 20, two ends of the tension spring 19 are respectively connected to the blocking plate 18 and the pull wire 20, the other end of the pull wire 20 is connected to a slider 21 at the rear end of the trigger 12, and a sliding slot for installing a return spring, the slider 21 and the trigger 12 is arranged on the side wall of the gun body 2; the inside of the gun body 2 is provided with a lifting slide way matched with the blocking plate 18, and the lifting of the blocking plate 18 is used for blocking and opening the air passage 6. Pulling the trigger can make the slider compress the reset spring and slide inwards along the slide way, and then pulling the closure plate downwards through the acting line, can open the air flue, and high-pressure gas spouts, realizes the high-speed injection of medicament through promoting the piston rod.

During specific manufacturing, the air passage 6 can be arranged inside the gun body 2, and the trigger 12 is arranged at the lower corner of the junction of the injection tube 4 and the gun body 2. When the button is pressed by the thumb during injection, the front forefinger or middle finger pulls the trigger, so that the injection operation can be conveniently finished by one hand, and the treatment time is saved.

In one embodiment of the present invention, as shown in fig. 2, the rear end of the medicine bottle 3 is provided with a bottle stopper 22, and the front end is provided with a closure 23 for closing the outlet of the medicine bottle 3. The medicine bottle 3 is a plastic bottle, the rear end of the medicine bottle is provided with a cap 24, one end of the cap 24 is provided with a groove matched with the tail of the medicine bottle, and the cap 24 is tightly matched with the outer wall of the tail of the medicine bottle. By adopting the structure, the safe storage of the medicine bottle can be ensured, and the use safety of the medicine is ensured.

During specific manufacturing, the medicine bottle can be designed into various specifications according to actual needs. The medicine bottle adopts the preparation of medicine, head 23 and medicine bottle injection moulding as an organic whole, head 23 can be twisted off before the injection, and with the medicine bottle separation, expose the medicament export of front end, arrange the medicine bottle in the injection tube again. Note that the drug outlet end of the vial is disposed inside the injection port 5. The wall thickness around the injection port is larger than the thickness of other parts of the injection pipe, so that the strength is improved, and the caliber of the injection port is conveniently reduced to increase the injection speed.

In conclusion, the utility model has the advantages of simple and compact structure, convenient and fast operation, can reduce the injection time and effectively improve the treatment efficiency, and is particularly suitable for battlefield or field first aid. By utilizing the injection medicament, the medicament bottle is disposable, cross infection cannot be generated, and the safety performance is good; the carbon dioxide high-pressure gas is pollution-free, safe and environment-friendly. The utility model is of a pure mechanical structure, can be checked regularly, is convenient to maintain and has long service life.

In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.

Claims

1. A needleless injection gun, comprising: the injection gun comprises a gun body embedded with a high-pressure gas cylinder and an injection tube capable of containing the medicine bottle, wherein an air supply assembly for opening the high-pressure gas cylinder is arranged at the rear part of the gun body; the front end of the injection tube is provided with a jet orifice, an injection assembly for pushing the medicament is arranged at the junction of the injection tube and the gun body, and the injection assembly is connected with the high-pressure gas cylinder through a gas passage.

2. The needleless injection gun of claim 1, wherein: the air supply assembly comprises a button and an exhaust valve, the exhaust valve is arranged at an air outlet of the high-pressure air bottle and is connected with the air passage, the button is connected with the exhaust valve through a pressure spring, and a sliding groove matched with the button and the pressure spring is arranged at the rear end of the gun body; the bottom of the gun body is provided with a mounting groove for accommodating a high-pressure gas cylinder, and the sliding groove is communicated with the mounting groove; the rear part of the gun body is also provided with a pressure gauge connected with the air passage.

3. The needleless injection gun of claim 2, wherein: the open end joint of mounting groove has the apron, the apron passes through the joint structure and links to each other with the rifle body.

4. The needleless injection gun of claim 1, wherein: the injection assembly comprises a trigger, a return spring and a manual retraction rod, and the trigger is arranged below the injection tube; the other end of the air passage is connected with a return spring through a top push plate, and the tail end of the air passage is provided with an opening and closing mechanism connected with a trigger; the other end of the reset spring is connected with the manual retraction rod, and a piston rod which can be in sliding fit with the inner wall of the medicine bottle is fixed on the other side of the manual retraction rod.

5. The needleless injection gun of claim 4, wherein: the front part of the injection tube is provided with a drug tube bin for containing a drug bottle, and a window for taking and placing the drug bottle is arranged on the upper surface or the side surface of the drug tube bin; reset spring, manual withdrawal pole and piston rod all set up in the rear portion in medicine pipe storehouse.

6. The needleless injection gun of claim 5, wherein: and a shield is arranged at the opening and connected with the side wall of the injection tube.

7. The needleless injection gun of claim 4, wherein: the opening and closing mechanism comprises a blocking plate, a tension spring and a pull wire, wherein two ends of the tension spring are respectively connected with the blocking plate and the pull wire, the other end of the pull wire is connected with a slider at the rear end of a trigger, and a sliding groove for mounting a return spring, the slider and the trigger is arranged on the side wall of the gun body; the inside of the rifle body is equipped with and is used for with closure plate assorted lift slide, the lift of closure plate is used for the shutoff and opens the air flue.

8. The needleless injection gun of any one of claims 1 to 7, wherein: the rear end of the medicine bottle is provided with a bottle plug, and the front end of the medicine bottle is provided with a sealing head for sealing the outlet of the medicine bottle.

9. The needleless injection gun of claim 8, wherein: the medicine bottle is a plastic bottle, the rear end of the medicine bottle is provided with a cap, one end of the cap is provided with a groove matched with the tail of the medicine bottle, and the cap is tightly matched with the outer wall of the tail of the medicine bottle.

10. The needleless injection gun of claim 8, wherein: the medicine bottle is medicinal material matter, head and medicine bottle be injection moulding as an organic whole, the head can be twisted off and the medicine bottle separation.