CN115154764A - Gas spring type needleless injector and resetting device thereof - Google Patents
Gas spring type needleless injector and resetting device thereof Download PDFInfo
- Publication number
- CN115154764A CN115154764A CN202210926502.1A CN202210926502A CN115154764A CN 115154764 A CN115154764 A CN 115154764A CN 202210926502 A CN202210926502 A CN 202210926502A CN 115154764 A CN115154764 A CN 115154764A
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- gas spring
- ampoule
- shell
- groove
- needleless injector
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- 239000003708 ampul Substances 0.000 claims abstract description 39
- 239000003814 drug Substances 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 15
- 238000003756 stirring Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007920 subcutaneous administration Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010051837 Skin induration Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- A61M5/31—Details
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 utility model provides a gas spring formula needleless syringe, which comprises an outer shell, installation space has been seted up in the shell, first recess has been seted up on the shell, and first recess and installation space intercommunication, be equipped with trigger mechanism on the first recess, one side is equipped with the ampoule in the installation space, and it is used for pushing out the piston rod of liquid medicine in the ampoule to slide in the ampoule, one side of relative ampoule is equipped with the air spring casing in the installation space, it is equipped with first ejector pin to slide on the air spring casing, trigger mechanism can carry on spacingly to first ejector pin, stir trigger mechanism and can make first ejector pin outwards slide on the air spring casing, and first ejector pin promotes the piston rod and makes the liquid medicine in the ampoule jetted out. The gas spring is arranged in the shell, the trigger mechanism is buckled, so that the gas spring can inject the liquid medicine in the ampoule into the human body, the structure is simple, and the gas spring has smaller size and weight and better sealing property, so that the aim of reducing the volume of the pneumatic needleless injector is fulfilled.
Description
Technical Field
The invention belongs to the field of medical treatment, and particularly relates to a gas spring type needleless injector and a resetting device thereof.
Background
The needleless injector is different from the traditional needle injector, the needle is not used in the needleless injector, the liquid medicine is ejected from the orifice with the extremely small aperture at a high speed under the action of the high-pressure driving device, and the formed extremely fine high-speed medicine jet can instantly penetrate through the skin to finish injection.
Because the diameter of the liquid medicine jet flow is far smaller than that of the traditional needle, the pain caused by injection is very weak, and the conflict emotion of a patient on the injection can be reduced. In addition, because the needle head is not used in the needleless injection, the potential acupuncture injury can be avoided, the skin induration caused by repeatedly injecting the same part for a long time can also be avoided, and the needle is suitable for long-term injection and large-scale injection scenes.
The existing pneumatic needleless injector has a complex structure, the size of parts is often larger, the existing pneumatic needleless injector is not beneficial to carrying and moving, larger noise can be generated in the using process, the guarantee of air tightness is also more difficult, the factors enable the pneumatic needleless injector to have higher price, and the popularization and the use of the pneumatic needleless injector are limited. A gas spring needleless injector is therefore proposed to address the above problems.
Disclosure of Invention
The invention aims to provide a gas spring type needleless injector and a resetting device thereof, and aims to solve the technical problems that the traditional gas spring type needleless injector is overlarge in size and weight and difficult in ensuring air tightness.
In order to achieve the aim, the specific technical scheme of the gas spring type needleless injector and the resetting device thereof is as follows:
the utility model provides a gas spring formula needleless syringe and resetting means thereof, which comprises an outer shell, the installation space has been seted up in the shell, first recess has been seted up on the shell, and first recess and installation space intercommunication, be equipped with trigger mechanism on the first recess, be equipped with the ampoule in installation space one side, and slide in the ampoule and be equipped with the piston rod, one side relative the ampoule in the installation space is equipped with the air spring casing, and there is the closing cap in the afterbody threaded connection of shell, the closing cap can implement spacingly to the air spring casing, it is equipped with first ejector pin to slide on the air spring casing, trigger mechanism and first ejector pin cooperation work, trigger mechanism can make first ejector pin slide on the air spring casing, and make first ejector pin promote the piston rod.
The gas spring type needleless injector and the resetting device thereof have the following advantages that:
1. according to the invention, the gas spring is arranged in the shell, the trigger mechanism is buckled, so that the gas spring can inject the liquid medicine in the ampoule into the human body, the structure is simple, and the gas spring has smaller size and weight and better sealing property, so that the purpose of reducing the volume of the pneumatic needleless injector is achieved, and the gas spring is convenient to use and low in cost.
2. The inner safety is arranged on the shell in a sliding mode, and the outer safety is arranged on the inner safety, so that the safety of the gas spring type needleless injector is improved, and the problem of preventing the trigger of the gas spring type needleless injector from being triggered by mistake when the gas spring type needleless injector is carried is solved.
Drawings
FIG. 1 is a schematic structural view of a gas spring type needleless injector and a reset device thereof according to the present invention;
FIG. 2 is a schematic half-sectional view of the gas spring-type needleless injector of the present invention;
FIG. 3 is a schematic structural view of a resetting device of a gas spring type needleless injector of the present invention;
FIG. 4 is a schematic half-sectional view of a reset device of the gas spring type needleless injector of the present invention;
the notation in the figure is:
1. a housing; 101. a front section; 1011. a threaded segment; 1012. a first chute; 1013. a first groove; 1014. a second groove; 102. a middle section; 103. a tail section; 2. internal insurance; 201. a protrusion; 3. external insurance; 4. a gasket; 5. an ampoule; 6. a piston rod; 7. fastening a screw rod; 8. a trigger; 801. a stopper; 802. a third groove; 9. an elastic member; 10. a first baffle plate; 11. a first lumen; 12. a second lumen; 13. a gas spring housing; 14. a first ejector rod; 15. a protective shell; 16. sealing the cover; 17. a base plate; 18. loading a cartridge; 19. a second baffle; 20. a second chute; 21. a connecting frame; 22. a support arm; 23. a connecting rod; 24. a second ejector rod; 25. and (7) a supporting block.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
A gas spring-type needleless injector and a reset device thereof according to some embodiments of the present invention will now be described with reference to fig. 1 to 4.
Referring to fig. 1 and 2, according to some embodiments of the present invention, there is provided a gas spring type needleless injector, which includes a housing 1, a mounting space is formed in the housing 1, a first recess 1013 communicating with the mounting space is formed in the housing 1, and a trigger mechanism is disposed on the first recess 1013. Installation space left end is equipped with ampoule 5, and the left side of ampoule 5 slides and is equipped with piston rod 6, and the right side that is located installation space is equipped with air spring housing 13 to slide in air spring housing 13 right side and be equipped with first ejector pin 14, trigger device implements spacingly to first ejector pin 14.
The ampoule 5 is used for storing liquid medicine in a cavity at the left end of the piston rod 6, the gas spring shell 13 is used for storing high-pressure nitrogen in a cavity at the right end of the first ejector rod 14, an opening at the left end of the ampoule 5 is aligned to a position needing to be injected with the liquid medicine, under the action of the high-pressure nitrogen, when the trigger device releases the limit on the first ejector rod 14, the high-pressure nitrogen can eject the first ejector rod 14 at a high speed, then the first ejector rod 14 is in contact with the piston rod 6 and ejects the piston rod 6 at a high speed, so that the liquid medicine in the ampoule 5 is ejected at a high speed and penetrates through the skin to enter the subcutaneous part, the liquid medicine is in spherical diffusion, and the injection is completed at the moment.
It should be noted that the installation space is composed of a first inner chamber 11 on the left side in the housing 1 and a second inner chamber 12 on the right side in the housing 1, and the first recess 1013 is communicated with the first inner chamber 11. The diameter of first inner chamber 11 is greater than the diameter of second inner chamber 12, and first inner chamber 11 and second inner chamber 12 intercommunication, and slidable mounting has gas spring housing 13 in second inner chamber 12, and the left end of gas spring housing 13 contacts with the left end face of second inner chamber 12 to make the left end face of second inner chamber 12 implement spacingly to gas spring housing 13. A first ram 14 within the gas spring housing 13 is extendable into the first interior chamber 11 and is movable from side-to-side within the first interior chamber 11.
And shell 1 includes anterior segment 101, middle section 102 and tail section 103, still is equipped with screw thread section 1011 on the anterior segment 101, and screw thread section 1011 inner wall is equipped with the internal thread, and ampoule 5 outside is equipped with the screw thread, and ampoule 5 is threaded connection with screw thread section 1011 to ensure the installation stability of ampoule 5 on shell 1. The gas spring housing 13 is detachable in the second inner cavity 12, and the end section 103 is provided with a sealing cover 16 to limit the gas spring housing 13, so that the gas spring housing 13 and the end section 103 of the housing 1 are relatively independent, and the gas spring housing is convenient to detach and install. Specifically, the outer diameter of the threaded section 1011 is smaller than the outer diameter of the front section 101, the outer diameter of the front section 101 is smaller than the outer diameter of the middle section 102, and the outer diameter of the middle section 102 is smaller than the outer diameter of the tail section 103, so that the housing 1 is stepped. The first recess 1013 is formed in the middle section 102, and the triggering mechanism includes first baffle plates 10 symmetrically arranged front and back on the first recess 1013, a trigger 8 rotatably arranged between the two first baffle plates 10 through a pin, a third recess 802 formed on the left side of the bottom surface of the trigger 8, and a stopper 801 arranged on the right bottom surface of the trigger 8, wherein the first push rod 14 is located at the right end of the stopper 801, so that the stopper 801 limits the first push rod 14.
The middle gas spring shell 13 is detachably arranged in the second inner cavity 12, the tail part of the shell 1 is in threaded connection with a sealing cover 16, and the left end of the sealing cover 16 is in contact with the right end of the gas spring, so that the gas spring shell 13 is limited in the second inner cavity 12. In order to prevent the first push rod 14 from being damaged and worn on the stopper 801 due to long-time clamping, a protective shell 15 is connected to the left end of the first push rod 14 through a screw, and the upper side of the left end of the protective shell 15 is in contact with the lower side of the right end of the stopper 801, so that the stopper 801 limits the first push rod 14 through the protective shell 15, and the protective effect on the first push rod 14 is achieved. The left end of the trigger 8 is pressed, the trigger 8 rotates around the pin shaft, the block 801 on the trigger 8 is lifted upwards, the lower side of the right end of the block 801 is separated from the upper side of the left end of the protective shell 15, the first ejector rod 14 and the protective shell 15 are ejected leftwards at high speed by high-pressure nitrogen in the gas spring shell 13, then the first ejector rod 14 ejects the piston rod 6 into the ampoule 5 leftwards at high speed through the protective shell 15, and liquid medicine in the ampoule 5 can be ejected from the outlet of the left end of the ampoule 5 at high speed.
Preferably, the inner fuse 2 is slidably disposed on the outer periphery of the front section 101, the right side of the inner fuse 2 is disposed with a protrusion 201, the protrusion 201 is specifically shaped as an annular protrusion connected to the right end of the inner fuse 2, and the annular protrusion can slide into a third groove 802 formed on the bottom surface of the trigger 8, when the inner fuse 2 slides to the right in the front section 101 and slides the protrusion 201 into the third groove 802, the left end of the trigger 8 can be pressed downward. Meanwhile, the outer fuse 3 is arranged on the outer circle of the inner fuse 2 in a sliding mode, the outer fuse 3 is cylindrical in specific shape, the outer fuse 3 slides to the right side of the inner fuse 2 and is located on the trigger 8 to be contacted, and therefore the limitation of the outer fuse 3 to the trigger 8 is achieved. The trigger 8 is triggered by sliding the protrusion 201 of the inner fuse 2 into the range of the third groove 802 and sliding the outer fuse 3 on the upper inner fuse 2 to the left end of the upper inner fuse 2, so that the trigger 8 can be triggered, and the trigger 8 can be triggered to achieve a double-protection effect, so that the gas spring needle-free injector can be protected from being touched by mistake in the carrying process.
The upper end of the left side of the inner fuse 2 is provided with a threaded hole, the front section 101 is provided with a first sliding groove 1012, the threaded hole is internally connected with a fastening screw rod 7 in a threaded manner, and the fastening screw rod 7 penetrates through the threaded hole and can extend into the first sliding groove 1012, so that the outer fuse 3 can only move within the range of the first sliding groove 1012 at the front end, and the outer fuse 3 is prevented from falling out of the range of the front section 101. Specifically, when the inner fuse 2 moves rightwards on the front section 101 and the protrusion 201 moves into the range of the third groove 802, the inner fuse 2 stops moving and the fastening screw 7 rotates in the inner fuse 2, so that the bottom surface of the fastening screw 7 is in contact with and screwed to the first sliding groove 1012, and the inner fuse 2 can be fixed on the front section 101.
The right end of the front section 101 is further sleeved with a washer 4, the right end of the protrusion 201 contacts with the washer 4, and the right end face of the washer 4 contacts with the left end face of the middle section 102, so that the washer 4 is confined between the right end face of the protrusion 201 and the left end face of the middle section 102. And the gasket 4 is a reset gasket, the gasket 4 can push the protrusion 201 to move leftwards on the front section 101 and move the protrusion 201 to an effective range of the depression of the third groove 802, so that the trigger 8 cannot be pressed continuously.
Because ampoule 5 is threaded connection with screw thread section 1011, can be when ampoule 5 installs into screw thread section 1011, when rotatory on screw thread section 1011 through ampoule 5, the left end face contact of the head right-hand member face of ampoule 5 with inner insurance 2. When the right end face of the head of the ampoule 5 contacts with the left end face of the thread section 1011, the protrusion 201 on the inner fuse 2 enters the effective range of the third groove 802, and the operation is simple and the use is convenient.
The protrusion 201 may be a protrusion or other shapes protruding outward from the inner fuse 2, besides the annular protrusion 201, and is not limited herein.
In order to realize the automatic reset after the trigger 8 is pressed, a second groove 1014 is formed at the right end of the upper side of the middle section 102, an elastic piece 9 is arranged in the second groove 1014, and the upper end of the elastic piece 9 is contacted with the trigger 8. Specifically, the elastic member 9 is a spring or a spring plate, etc., the upper end of the elastic member 9 is connected to the lower end of the trigger 8, and the lower end of the elastic member 9 is connected to the bottom surface of the second recess 1014.
The ampoule 5 is screwed into the thread section 1011 and screwed, the ampoule 5 drives the inner fuse 2 to move rightwards, so that the protrusion 201 on the inner fuse 2 moves to the effective working range of the third groove 802, then the outer fuse 3 slides leftwards and is separated from the effective working range when the trigger 8 presses, the outlet at the left end of the ampoule 5 is aligned to the position where liquid medicine needs to be injected, the trigger 8 is pressed, the protective shell 15 is separated from the stop 801 on the trigger 8, the first push rod 14 is ejected out from the air spring shell 13 at a high speed, the protective shell 15 on the first push rod 14 pushes the piston rod 6, the piston rod 6 can push out the liquid medicine in the ampoule 5 at a high speed and penetrates through the skin to enter the subcutaneous space, the liquid medicine is spread spherically, and the injection is completed at this moment.
As shown in fig. 3 and 4, the resetting device of a gas spring type needleless injector comprises a rectangular bottom plate 17, a loading cassette 18 is arranged at the right side of the top surface of the bottom plate 17, a supporting block 25 is arranged at the left side of the top surface of the bottom plate 17, a supporting arm 22 is rotatably arranged on the supporting block 25, and a connecting rod 23 is symmetrically and rotatably arranged at the right side of the supporting arm 22. The connecting frame 21 is arranged on the left side of the top surface of the bottom plate 17 in a sliding mode, the connecting frame 21 is U-shaped in specific shape, a rotating shaft is fixedly arranged at the right end of the connecting frame 21, and the right end of the connecting rod 23 is rotatably connected with the right end of the connecting frame 21 through the rotating shaft, so that the connecting rod 23 can rotate on the connecting frame 21 conveniently. The connecting rod 23, the connecting frame 21 and the support arm 22 are combined to form a crank-link mechanism, and the operation is simple. A second top bar 24 facing to the right is arranged on a transverse plate at the left end of the connecting frame 21, and the second top bar 24 penetrates through the left end surface of the loading box 18 and slides on the loading box 18. And the gas spring needleless injector and the resetting device are both made of aluminum alloy, so that the weight is light and the carrying is convenient.
Specifically, two second baffles 19 are symmetrically arranged on the bottom plate 17, a second sliding groove 20 is formed below the first baffles, a rotating shaft arranged on the connecting frame 21 penetrates through the multiple connecting rods 23 and extends outwards, and the extending end of the rotating shaft is slidably arranged in the second sliding groove 20. After the ampoule 5 is removed from the gas spring type needleless injector, the inner fuse 2 on the front section 101 is slid until the protrusion 201 is positioned in the third groove 802, then the fastening screw 7 is rotated to be fixed with the first sliding, the protrusion 201 is positioned in the working range of the third groove 802, and then the outer fuse 3 is slid to the left side of the inner fuse 2 to the left end far away from the trigger 8. The trigger mechanism of the gas spring type needleless injector with the ampoule 5 removed faces upwards and is placed in the loading box 18, the support arm 22 is pressed towards the lower right, the second ejector rod 24 slides towards the right under the action of the connecting rod 23 mechanism, the second ejector rod 24 firstly passes through the threaded section 1011 and extends into the middle section 102, and the support arm 22 is continuously pressed after the right end of the second ejector rod 24 is contacted with the protective shell 15, so that the first ejector rod 14 moves rightwards under the action of the second ejector rod 24. In the moving process, the upper end of the protective shell 15 starts to contact with the stopper 801, the trigger 8 starts to rotate counterclockwise around the pin shaft, and the third groove 802 is formed in the protrusion 201 in an opening mode. When the protective case 15 moves to the right end of the stopper 801, the trigger 8 is reset by the elastic member 9, and the protective case 15 is stopped and limited. And then, stopping pressing the support arm 22 and opening the support arm to complete the reset operation of the gas spring type needleless injector, taking out the gas spring type needleless injector, unscrewing the fastening screw 7, pushing the inner fuse 2 leftwards by the gasket 4 to enable the protrusion 201 to be separated from the effective working range of the third groove 802, sliding the outer fuse 3 to the right side of the inner fuse 2, and completing the limit operation of the trigger 8.
In the present invention, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance: the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A gas spring type needleless injector is characterized by comprising a shell (1), wherein an installation space is formed in the shell (1), a first groove (1013) is formed in the shell (1), the first groove (1013) is communicated with the installation space, a trigger mechanism is arranged on the first groove (1013), an ampoule (5) is arranged on one side in the installation space, a piston rod (6) used for pushing liquid medicine in the ampoule (5) is arranged in the ampoule (5) in a sliding mode, a gas spring shell (13) is arranged on one side, opposite to the ampoule (5), in the installation space, a first ejector rod (14) is arranged on the gas spring shell (13) in a sliding mode, the trigger mechanism can limit the first ejector rod (14), the trigger mechanism can enable the first ejector rod (14) to slide outwards on the gas spring shell (13) when being stirred, and the first ejector rod (14) pushes the piston rod (6) to enable the liquid medicine in the ampoule (5) to be ejected.
2. The gas spring type needleless injector of claim 1, wherein: the trigger mechanism comprises first baffle plates (10) symmetrically arranged on the first groove (1013), a trigger (8) is arranged between the two first baffle plates (10) in a rotating manner through a pin shaft, a stop block (801) is arranged on the bottom surface of the trigger (8), and one side of the bottom end of the stop block (801) is in contact with the first ejector rod (14) and limits the position of the first ejector rod;
the shell (1) comprises a front section (101), a middle section (102) and a tail section (103), a threaded section (1011) is arranged on the front section (101), an internal thread is arranged on the inner wall of the threaded section (1011), and the ampoule (5) is in threaded connection with the threaded section (1011);
a gas spring shell (13) is arranged in the installation space in a sliding mode, a sealing cover (16) is connected to the tail section (103) in a threaded mode, and the sealing cover (16) can limit the gas spring shell (13).
3. The gas spring type needleless injector according to claim 2, characterized in that the front section (101) is provided with an inner fuse (2) in a sliding manner, one side of the inner fuse (2) is provided with a protrusion (201), a gasket (4) is sleeved on the front section (101) between the protrusion (201) and the middle section (102), the protrusion (201) is in contact with the gasket (4), and the inner fuse (2) is provided with an outer fuse (3) in a sliding manner;
a third groove (802) is formed in one side, opposite to the stop block (801), of the trigger (8), and the protrusion (201) and the third groove (802) are matched to work.
4. The gas spring type needleless injector according to claim 3, characterized in that a threaded hole is formed at the top end of one side of the inner safety catch (2), a first sliding groove (1012) is formed on the front section (101), a fastening screw (7) is connected with the threaded hole in an internal thread manner, the fastening screw (7) penetrates through the threaded hole and can extend into the first sliding groove (1012), and the fastening screw (7) can slide in the first sliding groove (1012).
5. The gas spring type needleless injector and the reset device thereof according to claim 4, wherein a second groove (1014) is formed at one end of the upper side of the middle section (102), an elastic member (9) is arranged in the second groove (1014), and the upper end of the elastic member (9) is in contact with the trigger (8).
6. A gas spring type needleless injector as claimed in claim 1, characterized in that the first plunger (14) is connected to the side of the rear of the gas spring housing (13) by means of a screw to form a protective housing (15).
7. A resetting device comprises the resetting device of the gas spring type needleless injector in claims 1 to 6, and is characterized in that the resetting device comprises a bottom plate (17), a loading box (18) is arranged on the bottom plate (17), the injector can be placed in the loading box (18), the bottom plate (17) is provided with a connection in a sliding manner, a second ejector rod (24) is arranged on a connecting frame (21), the second ejector rod (24) penetrates through the loading box (18), a supporting block (25) is rotatably arranged on the bottom plate (17) relative to one end of the loading box (18), a supporting arm (22) is rotatably arranged on the supporting block (25), a connecting rod (23) is symmetrically rotatably arranged on the supporting arm (22), and one end, far away from the supporting arm (22), of the connecting rod (23) is movably connected with one end, close to the loading box (18), of the connecting frame (21);
the loading box (18) is provided with a small hole for the second mandril (24) to pass through.
8. The resetting device of the gas spring type needleless injector according to claim 7, characterized in that the bottom plate (17) is symmetrically provided with second baffles (19), each second baffle (19) is provided with a second chute (20);
the connecting rod (23) is rotatably connected with the connecting frame (21) through a rotating shaft, the rotating shaft is fixedly connected with the connecting frame (21), and each rotating shaft is arranged in each second sliding groove (20) corresponding to the rotating shaft in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926502.1A CN115154764A (en) | 2022-08-03 | 2022-08-03 | Gas spring type needleless injector and resetting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926502.1A CN115154764A (en) | 2022-08-03 | 2022-08-03 | Gas spring type needleless injector and resetting device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115154764A true CN115154764A (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210926502.1A Pending CN115154764A (en) | 2022-08-03 | 2022-08-03 | Gas spring type needleless injector and resetting device thereof |
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| CN (1) | CN115154764A (en) |
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| US4913699A (en) * | 1988-03-14 | 1990-04-03 | Parsons James S | Disposable needleless injection system |
| US5704911A (en) * | 1992-09-28 | 1998-01-06 | Equidyne Systems, Inc. | Needleless hypodermic jet injector |
| CN1455688A (en) * | 2000-04-07 | 2003-11-12 | 埃奎蒂恩系统公司 | Low-cost disposable needleless injector system for variable and fixed dose applications |
| CN205108596U (en) * | 2015-11-13 | 2016-03-30 | 苏州肯美威机械制造有限公司 | Loader for needleless injector |
| CN109453444A (en) * | 2018-12-04 | 2019-03-12 | 上海漾亮生物科技有限公司 | A kind of controllable needleless introducing apparatus component of importing depth |
| CN209564470U (en) * | 2018-12-04 | 2019-11-01 | 上海漾亮生物科技有限公司 | A kind of pneumatic type needleless introducing apparatus |
| CN111068147A (en) * | 2019-12-30 | 2020-04-28 | 江苏万泓医疗器械有限公司 | Needleless injector and method of use |
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2022
- 2022-08-03 CN CN202210926502.1A patent/CN115154764A/en active Pending
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| US4913699A (en) * | 1988-03-14 | 1990-04-03 | Parsons James S | Disposable needleless injection system |
| US5704911A (en) * | 1992-09-28 | 1998-01-06 | Equidyne Systems, Inc. | Needleless hypodermic jet injector |
| CN1455688A (en) * | 2000-04-07 | 2003-11-12 | 埃奎蒂恩系统公司 | Low-cost disposable needleless injector system for variable and fixed dose applications |
| CN205108596U (en) * | 2015-11-13 | 2016-03-30 | 苏州肯美威机械制造有限公司 | Loader for needleless injector |
| CN109453444A (en) * | 2018-12-04 | 2019-03-12 | 上海漾亮生物科技有限公司 | A kind of controllable needleless introducing apparatus component of importing depth |
| CN209564470U (en) * | 2018-12-04 | 2019-11-01 | 上海漾亮生物科技有限公司 | A kind of pneumatic type needleless introducing apparatus |
| CN111068147A (en) * | 2019-12-30 | 2020-04-28 | 江苏万泓医疗器械有限公司 | Needleless injector and method of use |
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Application publication date: 20221011 |
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