CN113413515A - Painless injection system of paediatrics - Google Patents
Painless injection system of paediatrics Download PDFInfo
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- CN113413515A CN113413515A CN202110787393.5A CN202110787393A CN113413515A CN 113413515 A CN113413515 A CN 113413515A CN 202110787393 A CN202110787393 A CN 202110787393A CN 113413515 A CN113413515 A CN 113413515A
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- 238000002347 injection Methods 0.000 title claims abstract description 43
- 239000007924 injection Substances 0.000 title claims abstract description 43
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 27
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 239000003814 drug Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 6
- 238000010521 absorption reaction Methods 0.000 claims 2
- 238000005213 imbibition Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010033675 panniculitis Diseases 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 210000004304 subcutaneous tissue Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
- A61M5/30—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
-
- 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
- A61M5/3129—Syringe barrels
-
- 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
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
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 pediatric painless injection system which comprises an aluminum alloy cylinder, a piston, a shell, a trigger switch, an air valve and a compressed air storage bottle, wherein the main body of the shell is a cylinder, one end of the shell is opened, the middle part in the shell is clamped with the aluminum alloy cylinder through a positioning reinforcing rib, one end of the aluminum alloy cylinder facing the outside of the shell is integrally formed with an end cover, a threaded hole is formed in the end cover and used for being connected with an air outlet A of the trigger switch, an air inlet A of the trigger switch is inwards concave and horn-shaped and used for being matched with an air outlet B inserted with the air valve to protrude outwards, and a thread is arranged in an air inlet B of the air valve and connected with a port of the compressed air storage bottle in a threaded manner. The needleless injection structure used in the department of pediatrics can realize painless injection, and the needleless structure can reduce the fear of children and infants, so that the injection is smoother, and the pain of adults and children is reduced.
Description
Technical Field
The invention relates to an injector, in particular to a pediatric painless injection system.
Background
The main purpose of painless injection is to reduce the fear of people to the needle, and when carrying out medical measure, the fear of injecing can be overcome to most adult, but because the infant can't control self mood at the paediatrics, so will cry greatly when seeing doctor or nurse and take the needle, and the head of a family needs the fixed child of compulsory, is all an injury to child and head of a family in many times, so the paediatrics especially needs painless injection technique.
The existing painless injection device is a needleless injector, which is also called jet injection, and the instantaneous high pressure generated by a power source is mainly utilized to enable the medicine in the injector to form a high-speed and high-pressure jet flow (the flow rate is generally more than 100m/s) through a nozzle, so that the medicine penetrates through the outer layer of the skin to the tissue layers such as the subcutaneous tissue and the intradermal tissue to release the medicine effect.
Most of the existing painless injection systems, namely needleless injectors, adopt springs to accumulate and release pressure, and the equipment needs larger pressure, so that labor is wasted when the equipment is manually pressed; in addition, the spring needs to be matched with a release mechanism to realize energy release, and in the process, the spring has large acting pressure on a locking piece in the release mechanism after energy storage, has large friction during release, is easy to wear and damage after long-time use, so that the needle-free injectors on the market are provided with service times or service lives.
And the pneumatic structure is adopted, the structure can be relatively simplified, the service life of the structure can be better prolonged, and most of the pneumatic painless injection systems on the market adopt disposable air storage tanks, so that the cost is higher.
Disclosure of Invention
The invention aims to provide a novel painless pediatric injection system which is pneumatically driven and can recycle a gas storage structure, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a pediatric painless injection system comprises an aluminum alloy barrel, a piston, a shell, a trigger switch, an air valve and a compressed air storage bottle, wherein the main body of the shell is a cylinder, one end of the shell is opened, the middle part of the shell is clamped with the aluminum alloy barrel through a positioning reinforcing rib, one end of the aluminum alloy barrel, which faces the outer part of the shell, is integrally formed with an end cover, a threaded hole is formed in the end cover and is used for being connected with an air outlet A of the trigger switch, an air inlet A of the trigger switch is inwards concave in a horn shape and is used for being matched with an air outlet B inserted with the air valve to protrude outwards, and a thread is formed in an air inlet B of the air valve and is in threaded connection with a port of the compressed air storage bottle; the air valve and the compressed air storage bottle are clamped in a bottle groove formed in the rear half part of the shell in a matched manner, and meanwhile, a round hole for the air outlet A to extend out is formed in one end, facing the trigger switch, of the bottle groove; the aluminum alloy cylinder is connected with a piston in a sliding manner, the piston is connected with one end of a piston rod, and the other end of the piston rod extends out of the other end of the aluminum alloy cylinder and extends into a through hole formed in the center of the end; the end head is in threaded connection with the front end port of the shell, the main body of the piston rod is a stainless steel metal rod with a square cross section, the other end of the piston rod is provided with a section of cylindrical structure, and the surface of the cylindrical structure is provided with an annular groove for clamping one end of the piston rod in the medicine tube; two liquid suction sliding grooves which are arranged along the axial direction of the shell are formed in the shell between the aluminum alloy barrel and the end head in a stacking mode, the liquid suction sliding grooves are concave and accommodate sliding buttons, a metal rod is connected between the two sliding buttons, and the metal rod penetrates through the corresponding insertion holes formed in the piston rod.
As a further scheme of the invention: the other end of the bottle groove is bonded with rubber.
As a further scheme of the invention: the trigger switch comprises a trigger switch shell, a thimble is arranged in the trigger switch shell, the thimble is a metal rod with a cross-shaped cross section, one end of the thimble is integrally connected with a baffle, the other end of the thimble is inserted into an air inlet hole A formed in the trigger switch shell, a spring A is arranged between the baffle and the inner wall of the trigger switch shell corresponding to one side of the air inlet hole A, and the spring A is used for ensuring that the thimble is contracted in the trigger switch shell under the condition of no external force; a sliding hole is formed in the coplanar position of the trigger switch shell and the air outlet hole A, a pull rod is slidably connected to the sliding hole, one end of the pull rod is connected with the baffle, the pull rod is located outside and is rotatably connected with one end of the lever A through a pin, the other end of the lever A is rotatably connected with one end of a connecting rod, the other end of the connecting rod is connected with a switch button located at the tail end of the shell, a sliding groove is formed in the middle of the lever A, the sliding groove is connected with a sliding shaft in a sliding mode, and the two ends of the sliding shaft are welded to the surface of the trigger switch shell through supports.
As a further scheme of the invention: the air valve comprises an air valve shell, a valve needle is arranged in an air outlet B of the trigger switch shell, the valve needle is also a metal rod with a cross-shaped cross section, one end, located in the trigger switch shell, of the valve needle is integrally formed and connected with a valve plate, another spring in a pre-compression state is arranged between the valve plate and the air inlet B, and the valve plate is tightly pressed on the inner side of the air outlet B through the spring.
As a further scheme of the invention: the air valve shell is provided with an inflation hole perpendicular to the axial surface of the air outlet hole B, the inner path of the inflation hole is in threaded connection with an air inlet one-way valve, and the inflation hole of the air valve shell protrudes outwards and is inserted into the inflation slot.
As a further scheme of the invention: the inflation slot is located in the bottle slot and connected with one end of the inflation tube, the other end of the inflation tube is connected with the inflation nozzle, the inflation nozzle is used for being connected with an inflator or a high-pressure air pump, and the air pump can be provided with a pressure gauge to obtain a required pressure value in actual impact. The gas-filled tube and the connecting rod are positioned in the space between the bottle groove and the inner wall of the shell.
As a further scheme of the invention: and an anti-deflection piece is arranged in the shell between the aluminum alloy cylinder body and the end head, the anti-deflection piece is a metal cylinder, a middle hole position is square, the piston rod is in sliding connection with the anti-deflection piece, and the anti-deflection piece is fixedly connected to the inner wall of the shell through a support.
As a further scheme of the invention: the surface of the deflection preventing piece is provided with a through hole and penetrates through the inner square hole, meanwhile, one side of a piston rod positioned in the sliding part of the deflection preventing piece is provided with a jack corresponding to the square hole, the jack is used for inserting one end of a positioning pin, the positioning pin is rotatably connected with one end of a lever B, the other end of the lever B is rotatably connected with one end of a pressing rod, and the other end of the pressing rod is slidably connected in the through hole formed in the shell; the middle part of the lever B is provided with a sliding chute and is connected with another pin shaft in a sliding way, and the pin shaft is connected on the shell through a bracket; and a pre-compression spring B is connected between the other end of the positioning pin and the inner wall of the shell.
As a further scheme of the invention: the surface of the shell is rotatably connected with a rotary drum, an annular groove is formed in the inner wall of the rotary drum and is clamped on an annular convex ridge formed on the outer surface of the shell, and the rotation of the rotary drum is not influenced; the inner wall of the rotary drum is provided with a groove with gradually changed depth along the axial direction; when the medicine tube is full of medicine, when the other end of the compression bar is located the deep position of the gradual change groove, the spring B has no external force and the positioning pin is inserted into the jack on the piston rod, when the other end of the compression bar is located the shallow position of the gradual change groove, the spring B receives external force compression and enables the positioning pin to be separated from the jack on the piston rod, and the injection state is to be treated at the moment.
As a further scheme of the invention: the logical groove that is used for corresponding with the imbibition spout is offered on the rotary drum surface, and when the pencil internal system was full of the medicine, and the rotary drum turned to the depression bar and is located the dark position of gradual change recess, led to the groove and crisscross with the imbibition spout, when the rotary drum rotated the depression bar and is located the shallow position of gradual change recess, led to the groove and overlapped with the imbibition spout.
Compared with the prior art, the invention has the beneficial effects that:
the needleless injection structure used in the department of pediatrics can realize painless injection, and the needleless structure can reduce the fear of children and infants, so that the injection is smoother, and the pain of adults and children is reduced.
The invention provides a brand-new painless injection system capable of replacing a gas cylinder, the service life of equipment is prolonged through a pneumatic design, the function mode of a compressed gas storage cylinder is easier, the injection system is suitable for pediatric nurses and other nurses, and the cost is lower.
Drawings
Fig. 1 is a front view of a pediatric painless injection system.
Fig. 2 is a top view of a pediatric painless injection system.
Fig. 3 is a schematic sectional view along the direction a-a in fig. 1.
Fig. 4 is a schematic structural diagram of a trigger switch in a pediatric painless injection system.
Fig. 5 is a schematic structural diagram of a thimble in a pediatric painless injection system.
Fig. 6 is a schematic diagram of the structure of a gas valve and a compressed gas storage bottle in a pediatric painless injection system.
Fig. 7 is a schematic view of the structure of the drum in the pediatric painless injection system.
In the figure: the device comprises a tip 1, a metal rod 2, a sliding button 3, a liquid suction chute 4, a rotary drum 5, a piston rod 6, an aluminum alloy cylinder 7, a piston 8, a shell 9, a lever A10, a pull rod 11, a trigger switch 12, an air valve 13, a connecting rod 14, a compressed air storage bottle 15, a switch button 16, an anti-deflection piece 17, a medicine tube 18, an inflation slot 19, an inflation tube 20, an inflation nozzle 21, a cover 22, a bottle groove 23, a pressure rod 24, a gradual change groove 25, a lever B26, a spring B27, a positioning pin 28, a through groove 29, an air outlet A30, a spring A31, a thimble 32, an air inlet A33, an air outlet B34, a valve plate 35, a one-way valve 36 and an air inlet B37.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, a pediatric painless injection system includes an aluminum alloy cylinder 7, a piston 8, a housing 9, a trigger switch 12, an air valve 13, and a compressed air storage bottle 15, where a main body of the housing 9 is a cylinder and one end of the housing is open, the housing is specifically formed by injection molding into two half shells matching with each other and fixed by a counter bore screw, and a plurality of reinforcing ribs are formed at an inner portion of the housing for positioning and increasing strength.
The middle part in the shell 9 is clamped with the aluminum alloy barrel 7 through a positioning reinforcing rib, one end of the aluminum alloy barrel 7 facing the outside of the shell is integrally formed with an end cover, a threaded hole is formed in the end cover and is used for being connected with an air outlet A30 of the trigger switch 12, an air inlet A33 of the trigger switch 12 is concave inwards and is horn-shaped and is used for being matched with an air outlet B34 of the plug-in air valve 13, and a thread is arranged in an air inlet B37 of the plug-in air valve 13 and is in threaded connection with a port of the compressed air storage bottle 15; the air valve 13 and the compressed gas storage bottle 15 are matched and clamped in a bottle groove 23 formed in the rear half part of the shell 9, meanwhile, a round hole for the air outlet A30 to extend out is formed in one end, facing the trigger switch 12, of the bottle groove 23, only the air outlet B34 of a component formed by combining the air valve 13 and the compressed gas storage bottle 15 needs to be aligned with the air outlet A30 and inserted in the air outlet A in actual manual operation, then the compressed gas storage bottle 15 is pressed to be fixedly clamped in the bottle groove 23, and rubber can be bonded to the other end of the bottle groove 23 to assist in extruding the compressed gas storage bottle 15; when the compressed air storage bottle 15 is disassembled, the tail part of the compressed air storage bottle is buckled by fingers;
the air outlet B34, the air outlet A30, the air inlet A33 and the air inlet B37 are all defaulted to be round holes.
It should be noted that, this design is based on the power that the explosion of compressed gas produced promotes the liquid medicine in the medicine pipe to enter into the subcutaneous tissue, this design adopts compressed gas storage bottle 15 of storage compressed gas can recycle also can purchase disposable compressed gas storage bottle 15 (compressed gas storage bottle 15 and pneumatic valve 13 cooperation are sold), can adopt inflatable pneumatic valve cooperation air pump secondary punching press during recycle, recycle can be used for long-term use in the paediatrics, reduce the waste of consumptive material, and disposable compressed gas storage bottle 15 can be used to special environment such as outside the hospital disposable emergency use.
The trigger switch 12 comprises a trigger switch shell, the trigger switch shell is formed by integrally molding and processing copper alloy, a thimble 32 is arranged in the trigger switch shell, the thimble 32 is a metal rod with a cross-shaped cross section, one end of the thimble is integrally connected with a baffle (the diameter of the baffle is smaller than the inner diameter of the trigger switch shell), the other end of the thimble 32 is inserted into an air inlet hole A33 formed in the trigger switch shell, a spring A31 is arranged between the baffle and the inner wall of the trigger switch shell corresponding to one side of the air inlet hole A33, and the spring A31 is used for ensuring that the thimble 32 is contracted in the trigger switch shell under the state of no external force action (a small part of the thimble 32 is positioned in the air inlet hole A33 generally); the coplanar position of the trigger switch shell and the air outlet A30 is provided with a sliding hole, the sliding hole is connected with a pull rod 11 in a sliding manner, one end of the pull rod 11 is connected with a baffle, the pull rod 11 is positioned outside and is rotationally connected with one end of a lever A10 through a pin, the other end of the lever A10 is rotationally connected with one end of a connecting rod 14, the other end of the connecting rod 14 is connected with a switch button 16 positioned at the tail end of the shell 9, the middle part of the lever A10 is provided with a sliding groove and is connected with a sliding shaft in a sliding manner, the two ends of the sliding shaft are welded on the surface of the trigger switch shell through a bracket, namely, the switch button is manually pressed, and the thimble 32 moves into the air outlet B34 of the air valve 13 through the transmission of the lever B and triggers the air valve 13 to release pressure.
The air valve 13 comprises an air valve shell, the air valve shell is also formed by integrally forming and processing copper alloy, a valve needle is arranged in an air outlet B34 of the trigger switch shell, the valve needle is also a metal rod with a cross-shaped cross section, one end of the valve needle, which is positioned in the trigger switch shell, is integrally formed and connected with a valve plate 35 (one surface of the valve plate, which is contacted with the inner wall of the air valve shell, is bonded with a rubber layer, the diameter of the valve plate is also smaller than the inner diameter of the air valve shell by default), another spring in a pre-compression state is arranged between the valve plate 35 and the air inlet B37, and the valve plate 35 is tightly pressed on the inner side of an air outlet B34 through the spring; when the thimble 32 extends into the outlet hole B34 and pushes the valve needle inward, the sealing state of the valve plate 35 is canceled, and the gas in the compressed gas storage bottle 15 is explosively output.
The one side that the air valve shell is perpendicular to venthole B34 axial is seted up and is aerifyd the hole and aerify the hole internal path threaded connection and have the check valve 36 that admits air, the inflation hole evagination and the plug-in of air valve shell are in aerifing slot 19, aerifing slot 19 and lie in bottle groove 23, aerify the one end of slot connection gas tube 20, the charging connector 21 is connected to the other end of gas tube 20, and the charging connector 21 is used for connecting inflator or high pressure air pump, can give the air pump during actual impact and be equipped with the manometer in order to obtain required pressure value. The gas-filled tube 20 and the connecting rod 14 are located in the space between the bottle groove 23 and the inner wall of the housing 9.
The opening of the bottle groove 23 is positioned on the surface of the shell 9 and is clamped with the cover 22.
The utility model discloses a medicine injection device, including aluminum alloy cylinder 7, sliding connection piston 8, piston 8 connects the one end of piston rod 6, the other end of piston rod 6 stretches out and extends to in the through-hole that end 1 center was seted up from the other end of aluminum alloy cylinder 7 (the central through-hole of this end 1 also can let the piston rod in the pencil pass through), end 1 threaded connection is in shell 9 front end port, the main part of this piston rod 6 is the stainless steel metal pole that the cross section is the square and its other end sets up one section cylindrical structure, cylindrical structure surface sets up the ring channel and is used for the piston rod one end in the pencil 18 of joint, the head of pencil 18 is used for aiming at and artifical extrusion injection site, the pressure that explodes through inside air current promotes piston 8 and moves and transmits the piston rod department of pencil 18, make the liquid medicine in the pencil 18 by high-speed jet out in order to enter into human skin.
Pile up on the shell 9 between aluminum alloy barrel 7 and the end 1 and set up two imbibition spouts 4 along the shell axial setting, imbibition spout 4 indent and hold slide button 3 (slide button 3 is not higher than the top edge of imbibition spout 4), connect between two slide buttons 3 metal pole 2 and metal pole 2 pass the jack that corresponds on the piston rod 6 and set up, the motion of sliding button 3 control piston and piston rod through the manual work is used for inhaling the medicine during in the in-service use.
The utility model discloses a deflection-proof device, including aluminum alloy cylinder 7 and end 1, be provided with in the shell 9 between aluminum alloy cylinder 7 and the end 1 and prevent deflecting piece 17, it is square that prevent deflecting piece 17 is metal drum and middle hole site, piston rod 6 and prevent deflecting piece 17 sliding connection, prevent deflecting piece 17 through support fixed connection on the inner wall of shell 9, prevent deflecting piece 17's surface set up the through-hole and pass inside square hole department, the jack that corresponds with the square hole is seted up to the piston rod 6 one side that lies in the sliding part in preventing deflecting piece 17 simultaneously, this jack is used for pegging graft the one end of locating pin 28, locating pin 28 rotates the one end of connecting lever B26, the other end of lever B26 rotates the one end of connecting depression bar 24, the other end sliding connection of depression bar 24 is in the through-hole of seting up on shell 9. The middle part of the lever B26 is provided with a sliding groove and is connected with another pin shaft in a sliding way, and the pin shaft is connected on the shell 9 through a bracket.
A spring B27 in a pre-compressed state is connected between the other end of the detent pin 28 and the inner wall of the housing.
The surface of the shell 9 is rotatably connected with a rotary drum 5, the inner wall of the rotary drum 5 is provided with an annular groove and clamped on an annular convex ridge formed on the outer surface of the shell 9, and the rotation of the rotary drum 5 is not influenced; the inner wall of the rotary drum 5 is provided with a groove 25 with gradually changed depth along the axial direction; when the medicine tube is full of medicine, and the other end of the pressure lever 24 is located at the deep position of the gradual change groove 25, the spring B27 has no external force and the positioning pin 28 is inserted into the jack on the piston rod 6, and when the other end of the pressure lever 24 is located at the shallow position of the gradual change groove 25, the spring B27 is compressed by external force and enables the positioning pin 28 to be separated from the jack on the piston rod 6, and the medicine tube is in a state of waiting for injection. After the injection is finished, the positioning pin is required to be reset so as to be matched with a safety mechanism formed by the insertion hole on the piston rod.
The through groove 29 that is used for corresponding with imbibition spout 4 is seted up on the rotary drum 5 surface, and when the medicine pipe internal suction was full of medicine, and when rotary drum 5 arrived depression bar 24 and is located the deep position of gradual change recess 25, the through groove was crisscross with imbibition spout 4, when rotary drum 5 arrived depression bar 24 and is located the shallow position of gradual change recess 25, through groove 29 and imbibition spout 4 overlapped. The device is used for preparation after washing liquid is finished, and the drug is prevented from being inefficiently released due to misoperation.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The pediatric painless injection system comprises an aluminum alloy barrel (7), a piston (8), a shell (9), a trigger switch (12), an air valve (13) and a compressed air storage bottle (15), and is characterized in that the main body of the shell (9) is a cylinder and is provided with an opening at one end, the middle part in the shell (9) is clamped with the aluminum alloy barrel (7) through a positioning reinforcing rib, the end cover is integrally formed at one end, facing the outside of the shell, of the aluminum alloy barrel (7), a threaded hole is formed in the end cover and used for being connected with an air outlet A (30) of the trigger switch (12), an air inlet A (33) of the trigger switch (12) is in a horn shape and used for being matched with an air outlet B (34) of an inserting air valve (13) which protrudes outwards, and a thread is arranged in an air inlet B (37) of the air valve (13) and is in threaded connection with a port of the compressed air storage bottle (15); the air valve (13) and the compressed air storage bottle (15) are matched and clamped in a bottle groove (23) formed in the rear half part of the shell (9), and meanwhile, a round hole for the air outlet hole A (30) to extend out is formed in one end, facing the trigger switch (12), of the bottle groove (23); the aluminum alloy cylinder (7) is connected with a piston (8) in a sliding manner, the piston (8) is connected with one end of a piston rod (6), and the other end of the piston rod (6) extends out of the other end of the aluminum alloy cylinder (7) and extends into a through hole formed in the center of the end head (1); the end (1) is in threaded connection with the front end port of the shell (9), the main body of the piston rod (6) is a stainless steel metal rod with a square cross section, the other end of the piston rod is provided with a section of cylindrical structure, and the surface of the cylindrical structure is provided with an annular groove for clamping one end of the piston rod in the medicine tube (18); the aluminum alloy barrel is characterized in that two liquid absorption sliding grooves (4) which are axially arranged along the shell are formed in a stacking mode on the shell (9) between the aluminum alloy barrel body (7) and the end head (1), the liquid absorption sliding grooves (4) are concave inwards and accommodate sliding buttons (3), and a metal rod (2) is connected between the two sliding buttons (3) and penetrates through corresponding insertion holes formed in the piston rod (6).
2. Pediatric painless injection system according to claim 1, characterized in that the other end of the bottle groove (23) is glued with rubber.
3. The pediatric painless injection system of claim 1, wherein the trigger switch (12) comprises a trigger switch housing, a thimble (32) is arranged in the trigger switch housing, the thimble (32) is a metal rod with a cross-shaped cross section, one end of the thimble (32) is integrally connected with a baffle, the other end of the thimble (32) is inserted into an air inlet hole A (33) formed in the trigger switch housing, a spring A (31) is arranged between the baffle and the inner wall of the trigger switch housing corresponding to one side of the air inlet hole A (33), and the spring A (31) is used for ensuring that the thimble (32) is retracted in the trigger switch housing when no external force acts on the trigger switch housing; the trigger switch shell is provided with a sliding hole in the coplanar position with the air outlet hole A (30), the sliding hole is connected with a pull rod (11) in a sliding mode, one end of the pull rod (11) is connected with a baffle, the pull rod (11) is located outside and is connected with one end of a lever A (10) in a rotating mode through a pin, the other end of the lever A (10) is connected with one end of a connecting rod (14) in a rotating mode, the other end of the connecting rod (14) is connected with a switch button (16) located at the tail end of the shell (9), the middle of the lever A (10) is provided with a sliding groove, the sliding groove is connected with a sliding shaft in the sliding mode, and the two ends of the sliding shaft are welded on the surface of the trigger switch shell through supports.
4. The pediatric painless injection system of claim 1, wherein the air valve (13) comprises an air valve housing, a valve needle is arranged in an air outlet hole B (34) of the trigger switch housing, the valve needle is also a metal rod with a cross-shaped cross section, one end of the valve needle in the trigger switch housing is integrally formed and connected with a valve plate (35), and another spring in a pre-compression state is arranged between the valve plate (35) and an air inlet hole B (37), and the valve plate (35) is pressed on the inner side of the air outlet hole B (34) through the spring.
5. The pediatric painless injection system of claim 4, wherein an inflation hole is formed in one surface of the air valve housing perpendicular to the axial direction of the air outlet hole B (34), an air inlet one-way valve (36) is connected to the inner path of the inflation hole in a threaded manner, and the inflation hole of the air valve housing protrudes outwards and is inserted into the inflation insertion groove (19).
6. Pediatric painless injection system according to claim 5, characterized in that the inflation socket (19) is located in the bottle groove (23) and is connected to one end of the inflation tube (20), the other end of the inflation tube (20) is connected to the inflation nozzle (21), and the inflation tube (20) and the connecting rod (14) are located in the space between the bottle groove (23) and the inner wall of the housing (9).
7. Pediatric painless injection system according to any of claims 1 to 6, wherein a deflection prevention element (17) is arranged in the housing (9) between the aluminum alloy cylinder (7) and the tip (1), the deflection prevention element (17) is a metal cylinder with a square central hole, the piston rod (6) is slidably connected with the deflection prevention element (17), and the deflection prevention element (17) is fixedly connected to the inner wall of the housing (9) through a bracket.
8. The pediatric painless injection system of claim 7, wherein the surface of the deflection prevention member (17) is provided with a through hole and penetrates through the inner square hole, and one side of the piston rod (6) positioned in the sliding part of the deflection prevention member (17) is provided with a jack corresponding to the square hole, the jack is used for inserting one end of a positioning pin (28), the positioning pin (28) is rotatably connected with one end of a lever B (26), the other end of the lever B (26) is rotatably connected with one end of a compression rod (24), and the other end of the compression rod (24) is slidably connected in the through hole formed in the housing (9); the middle part of the lever B (26) is provided with a sliding chute and is connected with another pin shaft in a sliding way, and the pin shaft is connected to the shell (9) through a bracket; and a spring B (27) in a pre-compression state is connected between the other end of the positioning pin (28) and the inner wall of the shell.
9. Pediatric painless injection system according to claim 8, characterized in that a rotating drum (5) is rotatably connected to the surface of the housing (9), and the inner wall of the rotating drum (5) is provided with an annular groove and is clamped on an annular ridge formed on the outer surface of the housing (9) without affecting the rotation of the rotating drum (5); the inner wall of the rotary drum (5) is provided with a groove (25) with gradually changed depth along the axial direction; when the medicine tube is full of medicine, the other end of the pressure lever (24) is located at the deep position of the gradual change groove (25), the spring B (27) has no external force and the positioning pin (28) is inserted into the jack on the piston rod (6), when the other end of the pressure lever (24) is located at the shallow position of the gradual change groove (25), the spring B (27) absorbs the external force to compress and enables the positioning pin (28) to be separated from the jack on the piston rod (6), and the medicine tube is in a state of waiting for injection.
10. The pediatric painless injection system of claim 9, wherein the surface of the rotary drum (5) is provided with a through groove (29) corresponding to the liquid suction chute (4), when the drug tube is filled with the drug and the rotary drum (5) rotates to a position where the pressing rod (24) is located at a deep position of the gradual change groove (25), the through groove and the liquid suction chute (4) are staggered, and when the rotary drum (5) rotates to a position where the pressing rod (24) is located at a shallow position of the gradual change groove (25), the through groove (29) and the liquid suction chute (4) are overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787393.5A CN113413515B (en) | 2021-07-13 | 2021-07-13 | Painless injection system of paediatrics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787393.5A CN113413515B (en) | 2021-07-13 | 2021-07-13 | Painless injection system of paediatrics |
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| Publication Number | Publication Date |
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| CN113413515A true CN113413515A (en) | 2021-09-21 |
| CN113413515B CN113413515B (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110787393.5A Expired - Fee Related CN113413515B (en) | 2021-07-13 | 2021-07-13 | Painless injection system of paediatrics |
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| CN113413515B (en) | 2022-08-26 |
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