CN109731186B - Adjustable dose needleless continuous injector - Google Patents
Adjustable dose needleless continuous injector Download PDFInfo
- Publication number
- CN109731186B CN109731186B CN201910142880.9A CN201910142880A CN109731186B CN 109731186 B CN109731186 B CN 109731186B CN 201910142880 A CN201910142880 A CN 201910142880A CN 109731186 B CN109731186 B CN 109731186B
- Authority
- CN
- China
- Prior art keywords
- medicine
- dose
- control valve
- spray head
- needleless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003814 drug Substances 0.000 claims abstract description 181
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 229940079593 drug Drugs 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims abstract description 29
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 35
- 239000007924 injection Substances 0.000 abstract description 35
- 210000003491 skin Anatomy 0.000 abstract description 6
- 210000004207 dermis Anatomy 0.000 abstract description 2
- 206010033675 panniculitis Diseases 0.000 abstract description 2
- 210000004304 subcutaneous tissue Anatomy 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 12
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000012377 drug delivery Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000036407 pain Effects 0.000 description 4
- 102000004877 Insulin Human genes 0.000 description 3
- 108090001061 Insulin Proteins 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 229940125396 insulin Drugs 0.000 description 3
- 238000007920 subcutaneous administration Methods 0.000 description 3
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 230000023597 hemostasis Effects 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229960005486 vaccine Drugs 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 108030001720 Bontoxilysin Proteins 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010064091 Iatrogenic infection Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 206010048038 Wound infection Diseases 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940053031 botulinum toxin Drugs 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000001161 mammalian embryo Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000000130 stem cell Anatomy 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000017423 tissue regeneration Effects 0.000 description 1
- 238000002255 vaccination Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a needleless continuous injector with adjustable dose. The spray head comprises a shell, a spray head assembly, a pushing assembly and a resetting assembly; the spray head assembly comprises a spray head, a medicine inlet channel connected with the spray head, a medicine control valve and a central push rod, wherein the medicine control valve and the central push rod are positioned in the medicine inlet channel, the front end of the central push rod is connected with the medicine control valve, and when the medicine control valve slides backwards, a medicine liquid accommodating cavity is formed at the front end of the medicine control valve; the pushing component comprises a connecting body, a compression spring, an elastic trigger piece, a dose control component and a spanner; the pushing component drives the central push rod to push the drug control valve to move forwards, under the synergistic effect of the compression spring and the drug control valve, high-pressure kinetic energy is generated in the liquid medicine accommodating cavity, the liquid medicine is pushed to pass through the spray head of the spray head component at a high speed to generate a high-pressure jet flow, the jet flow instantaneously penetrates through the dermis layer of the skin and enters subcutaneous tissue, and injection is completed.
Description
Technical Field
The invention discloses a dose-adjustable needleless continuous injector, and belongs to the technical field of medical appliances.
Background
At present, foreign enterprises produce a plurality of needleless injector products, most of the products are limited in the aspect of insulin treatment of diabetics, and the products are also partially applied to the aspect of injection of livestock epidemic prevention vaccines, the equipment structure adopts basically passive needleless injectors with small micro dose or active needleless injectors, the products have the defects of low operation speed, small injection dose which needs to be regulated once for every injection, small adjustable range, low efficiency and short service life, the price of the needleless injectors with small micro dose which does not depend on external kinetic energy sources is very high, and the price of the active needleless injectors which depend on a special power supply controller, an air compression pump and an air compression tank is very high, and the defects of huge volume, inconvenience in carrying, high fault rate and high maintenance cost exist.
There are also some needleless active or passive syringe products produced by enterprises in China, which are basically imitation or highly imitation foreign products, and have limited functions and high price. The relatively mature passive needleless injector is also limited to the application of insulin, has low operation efficiency, and the price is close to foreign products, and the disadvantage state of the devices at present obviously limits the application of the needleless injector in other aspects.
In the past, a device for introducing medicine through electrophoresis has been known, the principle that a chargeable substance between a positive electrode and a negative electrode of direct current is used for electrophoresis is applied to enable the medicine to enter a human body through electrification, the polarity and the polarity of the medicine are factors influencing the success or failure of the administration, the time is long and the speed is low, the component denaturation of ionization of the medicine is a problem, and the main thing is that the property of the medium is changed after the medicine is introduced into the skin, and the introduction depth of the medicine cannot be known.
The device for introducing the ultrasonic medicine also has huge device, special requirement on the environment of introducing the medicine, unsatisfactory introduced quantity and speed, incapability of mastering depth and quantity, obvious influence of cavitation effect of the ultrasonic on organism generation discomfort and inadaptability to flexible and motorized use conditions.
The utility model provides a patent application of application number 201720237476.6 discloses a novel but concurrent needleless injector, its major structure including set up injection subassembly in the cylinder, set up outside the cylinder pressurization subassembly, set up the dose adjuster in the cylinder front end, wherein the dose adjuster is cup jointed the cylinder of the inside fretwork outside the cylinder syringe front end, injection subassembly includes firing pin, compression spring and pressurization switch, and its main working process is: pressurizing a pressurizing spring of the injection assembly through the pressurizing assembly to prepare for injection, and then releasing the pressure of the pressurizing spring by pressing the pressurizing switch so as to push a firing pin to strike the medicine tube for injection; the control method of the traditional Chinese medicine liquid amount comprises the following steps: the dose regulator is in threaded connection with the front end of the syringe injector, and the relative position between the medicine tube and the syringe injector is driven by rotation, so that the injection quantity of each medicine liquid is in the stroke range of the firing pin, and the quantitative injection is completed. The syringe has the advantages that the liquid medicine in the medicine tube can be divided into a plurality of times of quantitative injection, so that the continuous and repeated quantitative injection is realized after the medicine tube is filled once. But the defects are: first, the pressurizing unit is provided separately from the pressurizing switch of the injection unit, and after the pressurizing, the pressurizing switch is additionally pressed to perform injection, and generally, two hands are required to operate, which is not convenient in operation. Secondly, the medicine tube is required to suck the medicine liquid in the ampoule bottle through manual operation, and then the medicine tube full of the medicine liquid is connected with the front end of the syringe injector through the dose regulator; in terms of operation, the structure is not only tedious, but also increases the risk of secondary pollution of the medicine; thirdly, since the injection amount of the medicine is determined by the stroke range of the striker, and in this syringe, the stroke of the striker is fixed and cannot be adjusted, so that the medicine amount per injection is only a fixed value, and although continuous injection of medicine is realized, the injection amount per injection can only be fixed, which limits the use range of the syringe, and the syringe cannot be completed in a mode of multiple continuous injections of adjustable injection dosage.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the adjustable dose needleless continuous injector which has the advantages of accurate control of medicine dosage, convenient operation, long service life and low cost.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an adjustable dose needleless continuous injector comprises a shell, a spray head component, a pushing component and a resetting component;
the spray head assembly comprises a spray head, a medicine inlet channel connected with the spray head, a medicine control valve and a central push rod, wherein the medicine control valve and the central push rod are positioned in the medicine inlet channel, the front end of the central push rod is connected with the medicine control valve, and the medicine control valve is driven by the central push rod and slides back and forth in the medicine inlet channel; when the drug control valve slides backwards, a drug solution accommodating cavity is formed at the front end of the drug control valve;
the pushing component comprises a connecting body, a compression spring, an elastic trigger piece, a dose control component and a spanner;
the front end of the connector is connected with the rear end of the central push rod, a trigger channel for accommodating the front part of the dose control assembly is arranged in the center of the connector, one end of the elastic trigger piece is fixed on the connector, the other end of the elastic trigger piece is a trigger end, the trigger end is positioned in the trigger channel, and the middle part of the wrench is in contact with the front end of the elastic trigger piece; the compression spring is positioned between the rear end of the connector and the dose control assembly; the front end of the dose control assembly is a top opening end which can enable the trigger end to leave the trigger channel; the distance between the front end of the dose control assembly and the triggering end of the elastic triggering piece is in direct proportion to the length of the liquid medicine accommodating cavity;
the wrench is connected with or in contact with the reset assembly.
Further, the dose control assembly comprises a quantitative control rod, an adjusting screw rod and a dose adjusting knob, wherein the front part of the quantitative control rod extends into the rod body in the trigger channel, a fixed base used for fixing the compression spring is arranged at the rear part of the quantitative control rod, a thread adjusting channel is arranged at the center of the rear part of the quantitative control rod, the front part of the adjusting screw rod is connected with the thread adjusting channel, and the rear end of the adjusting screw rod is connected with the dose adjusting knob.
Further, the rear part of the quantitative control rod is provided with a ring wall connected with the fixed base, the outer side surface of the ring wall is provided with scales, and the shell is provided with a dose display window for displaying the scales.
Further, the dose adjusting knob is located outside the shell, the main body of the adjusting screw rod is limited in the shell by a rear cover sealing flange, and an anti-sliding steel ball is arranged between the dose adjusting knob and the rear cover sealing flange.
Further, a leak-proof sealing film is arranged between the medicine inlet channel and the spray head.
Further, a liquid medicine container connection port is arranged on the medicine inlet channel; the medicine control valve is a one-way ball valve.
Further, the medicine control valve comprises a valve body, a medicine liquid guiding pipe, a ball accommodating cavity and a medicine ejection port, the medicine ejection port is positioned at the front end of the ball accommodating cavity, one end of the medicine liquid guiding pipe is communicated with the ball accommodating cavity, the other end of the medicine liquid guiding pipe is communicated with the medicine entering channel, and the ceramic ball is positioned in the ball accommodating cavity.
Further, a filter screen is arranged in the spray head or at one side of the leak-proof sealing film.
Further, the reset assembly comprises a spanner reset device and a spanner reset spring, a reset spring installation cavity is formed in the shell, the spanner reset device is connected with the reset spring installation cavity in a sliding mode, the spanner reset spring is located in the spanner reset device and the reset spring installation cavity, and one end of the spanner reset device is in contact with or is connected with the spanner.
Further, a sliding sealing piece is arranged between the rear end of the medicine inlet channel and the center push rod; the sliding seal is preferably a sealing ring.
The beneficial effects of the invention are as follows: the invention is composed of a mechanical structure, and the manual driving spanner is used for driving the pushing component to act when in operation, and under the synergistic effect of the compression spring and the resetting component, a high-pressure kinetic energy is generated to push the liquid medicament to pass through the spray head of the spray head component at a high speed to generate a high-pressure jet flow, so that the liquid medicament instantaneously penetrates through the dermis of the skin and enters subcutaneous tissues to complete injection. The invention does not need to be additionally provided with a special power supply for supplying power, saves the complicated and loop-attached power sources such as an action electromagnetic valve, an air compression pump, a compressed air tank and the like with high energy consumption, can adjust the dosage of the injected medicine within the setting range of a user, and can be used for continuous injection by single-hand operation. By means of the dose control assembly, the range of adjustable drug doses is large. The invention has simple operation, is firm and durable, is convenient to carry, can adapt to normal work under very severe environment, and plays a safe and efficient function. The medical staff can rapidly and continuously inject the liquid medicament according to the requirement of aseptic operation, the liquid medicament is added into the cavity of the injector or a medicament bottle with corresponding large dosage is arranged at the rear part of the needleless injector, the dosage of the medicament to be injected is read out through a dosage display window on the shell, so that the medical staff can inject the medicament according to the use requirement of different medicaments and objects by holding the needleless injector with one hand to aim at the skin part and pulling a spanner, the spanner is released and repeated pulling is carried out to continuously inject different parts for the second time, the third time and the like for the repeated pulling, and the injection only needs a few seconds for the time.
The application range of the invention is as follows:
1. in the aspect of subcutaneous drug delivery treatment of multiple-point sites in clinical medicine of traditional Chinese medicine, the needleless injector can improve the effect of subcutaneous drug injection, and aiming at a plurality of defects of other drug delivery methods, the drug delivery method of the needleless continuous injector with adjustable dose can enable the drug delivery operation of the multiple-point sites in clinical medicine of traditional Chinese medicine to be simple, efficient, accurate, rapid, safe and reliable.
2. Or when the war and disaster events occur, medical staff face a large number of disabled people, the rescue workload is large, the needleless injector can be rapidly used for novel tools with multiple functions such as emergency hemostasis, pain relieving, wound infection resisting, wound surface cleaning and the like on the wounded parts of the disabled people, the needleless injector does not need to frequently exchange injector needles, the medicine bottles with different functions can be rapidly replaced to rapidly play roles on the wounded surfaces, and the rescue purposes of hemostasis, pain relieving, infection resisting and wound surface cleaning can be achieved at the fastest speed and with the minimum damage.
3. In the aspect of vaccine vaccination of large-batch crowd or livestock zoon, the needleless injector is convenient to carry, simple, convenient and safe, greatly reduces the labor intensity of health epidemic prevention staff, and the adjustable dose needleless continuous injector has wide application prospect.
4. In some occasions requiring subcutaneous or submucosal administration, the method utilizes the characteristic of adjustable dosage of the needleless continuous injector, is more suitable for insulin treatment of diabetes mellitus, scar tissue repair treatment, local tissue infiltration anesthesia, superficial tumor targeted treatment, stem cell, botulinum toxin, sheep embryo extract local modification injection and the like, and has accurate positioning, simple and convenient operation and small pain sense.
5. The invention can enter high-temperature high-pressure equipment for disinfection treatment, can be contacted with skin or be close to the skin for injection, has short injection time, can be completed in a few tenths of a second, avoids the terrible needle feel of a plurality of patients caused by the traditional injector needle, obviously reduces the pain feel during injection, and reduces the occurrence probability of iatrogenic infection and cross infection.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of the structure of the connector of the present invention when it moves backward.
Fig. 3 is a schematic top view of the push assembly of the present invention in a reset position.
Fig. 4 is a schematic top view of the resilient trigger member of the push assembly of the present invention as it is ejected from the trigger channel by the dose control assembly.
FIG. 5 is a schematic view of the configuration of the spray head assembly of the present invention with the push assembly reset.
FIG. 6 is a schematic view of the structure of the showerhead assembly of the present invention when the center pushrod is moved rearward.
In the figure: 1. a housing; 101. a dose display window;
201. a spray head; 202. a drug entry channel; 203. a drug control valve; 204. a center push rod; 205. a liquid medicine accommodating chamber; 206. a leak-proof sealing membrane; 207. a filter screen; 208. a liquid medicine container connection port; 209. a sliding seal;
211. a valve body; 212. a liquid medicine guiding tube; 213. a ball; 214. a ball receiving cavity; 215. a drug ejection port;
301. a connecting body; 302. a compression spring; 303. an elastic trigger; 304. a dose control assembly; 305. a wrench;
311. triggering a channel; 331. a trigger end;
341. a top end; 342. a quantitative control lever; 343. adjusting a screw rod; 344. a dose knob; 345. a fixed base; 346. a thread adjusting passage; 347. an annular wall;
4. a drug vial; 5. the rear cover seals the flange; 6. anti-slip steel balls;
701. a wrench restorer; 702. a spanner reset spring; 703. a return spring mounting cavity;
8. a handle.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.
According to fig. 1-6, an adjustable dose needleless continuous injector of the present invention comprises a housing 1, a spray head assembly, a push assembly, and a reset assembly.
The spray head assembly includes a spray head 201, a medication intake channel 202 connected to the spray head 201, a medication control valve 203 located within the medication intake channel 202, and a center pushrod 204. A leak-proof sealing membrane 206 and a filter screen 207 are arranged between the medicine inlet channel 202 and the spray head 201, and the filter screen 207 is preferably a stainless steel filter screen. The outer diameter of the center pushrod 204 is smaller than the inner diameter of the medicine inlet passageway 202, and a gap area for inflow of medicine is formed between the main body of the center pushrod 204 and the inner wall of the medicine inlet passageway 202. The front end of the center push rod 204 is connected to the medicine control valve 203. A sliding seal 209 is provided between the rear end of the medication intake channel 202 and the central pushrod 204, the sliding seal 209 preferably being a sealing ring. A liquid medicine container connection port 208 is arranged on the medicine inlet channel 202, and the liquid medicine container connection port 208 is used for connecting a medicine bottle 4; the medicine in the medicine bottle 4 enters the medicine inlet path 202 through the medicine container connection port 208. The medication control valve 203 is preferably a one-way ball valve.
The medicine control valve 203 comprises a valve body 211, a medicine liquid guiding tube 212, a ball 213, a ball accommodating cavity 214 and a medicine ejection outlet 215, the medicine ejection outlet 215 is positioned at the front end of the ball accommodating cavity 214, one end of the medicine liquid guiding tube 212 is communicated with the ball accommodating cavity 214, the other end of the medicine liquid guiding tube 212 is communicated with the medicine inlet channel 202, the ball 213 is positioned in the ball accommodating cavity 214, and the ball 213 is used for blocking the medicine liquid guiding tube 212 or is used for opening and communicating the medicine ejection outlet 215, the ball accommodating cavity 214 and the medicine liquid guiding tube 212. The beads 213 are preferably corrosion resistant hard beads such as ceramic beads, stainless steel beads, etc.
The medicine control valve 203 is driven by the central push rod 204 and slides back and forth in the medicine inlet channel 202; when the medicine control valve 203 slides backward, a medicine liquid receiving chamber 205 is formed at the front end of the medicine control valve 203. The reset state of the drug control valve 203 is: the medicine control valve 203 is located at the front end of the medicine inlet passage 202, and the ball 213 closes the medicine liquid guiding tube 212. When the drug control valve 203 moves backward, the drug solution in the drug inlet channel 202 flows to the ball accommodating chamber 214 through the drug solution guiding tube 212, the ball 213 is pushed open, the drug solution guiding tube 212 is opened, the drug solution flows out into the drug solution accommodating chamber 205 at the front end of the drug control valve 203 through the drug ejection port 215 for temporary storage after passing through the ball accommodating chamber 214, and the leak-proof sealing membrane 206 is used for blocking the drug solution from naturally flowing out of the spray head 201.
The push assembly comprises a connecting body 301, a compression spring 302, a resilient trigger 303, a dose control assembly 304 and a wrench 305.
The front end of the connector 301 is connected with the rear end of the center push rod 204, a trigger channel 311 for accommodating the front part of the dose control assembly 304 is arranged in the center of the connector 301, one end of the elastic trigger piece 303 is fixed on the connector 301, the other end of the elastic trigger piece 303 is a trigger end 331, the trigger end 331 is positioned in the trigger channel 311, and the middle part of the wrench 305 is in contact with the front end of the elastic trigger piece 303; the upper end of the wrench 305 is hinged on the shell 1, and the lower end of the wrench 305 passes through the trigger channel 311 and the lower part of the shell 1; the lower middle portion of the wrench 305 is connected to or in contact with the reset assembly. The compression spring 302 is located between the rear end of the connecting body 301 and the dose control assembly 304.
The front end of the dose control assembly 304 is a top open end 341 that enables the trigger end 331 to be moved away from the trigger channel 311; the distance between the front end of the dose control assembly 304 and the trigger end 331 of the elastic trigger 303 is proportional to the length of the liquid medicine accommodating cavity 205, the distance between the front end of the dose control assembly 304 and the trigger end 331 of the elastic trigger 303 determines the dosage of the liquid medicine in the liquid medicine accommodating cavity 205, and the distance between the front end of the dose control assembly 304 and the trigger end 331 of the elastic trigger 303 is adjusted by the dose control assembly 304, so that the length of the liquid medicine accommodating cavity 205 is changed, and the adjustment of the dosage of the injected liquid medicine is realized.
The dose control assembly 304 comprises a quantitative control rod 342, an adjusting screw 343 and a dose adjusting knob 344, wherein the front part of the quantitative control rod 342 extends into the triggering channel 311, the front end of the rod body is the top opening end 341, a fixing base 345 for fixing the compression spring 302 is arranged at the rear part of the quantitative control rod 342, a threaded adjusting channel 346 is arranged at the center of the rear part of the quantitative control rod 342, the front part of the adjusting screw 343 is connected with the threaded adjusting channel 346, and the rear end of the adjusting screw 343 is connected with the dose adjusting knob 344. As a preferred embodiment, the rear portion of the quantitative control lever 342 is provided with a circumferential wall 347 connected to the fixing base 345, the outer side surface of the circumferential wall 347 is provided with graduations, and the housing 1 is provided with a dose display window 101 for displaying the graduations. The dose knob 344 is located outside the housing 1, the main body of the adjusting screw 343 is limited in the housing 1 by the rear cover sealing flange 5, and an anti-sliding steel ball 6 is arranged between the dose knob 344 and the rear cover sealing flange 5.
The reset assembly comprises a spanner reset device 701 and a spanner reset spring 702, wherein a reset spring mounting cavity 703 is formed in the shell 1, the spanner reset device 701 is slidably connected with the reset spring mounting cavity 703, the spanner reset spring 702 is located in the spanner reset device 701 and the reset spring mounting cavity 703, and one end of the spanner reset device 702 is in contact with or connected with the spanner 305.
A handle 8 is arranged at the right lower part of the shell 1, and the handle 8 is convenient for holding and applying force to the wrench 305 during injection.
When the wrench is used, the wrench 305 is in a reset state under the action of the reset component, the medicine bottle 4 is connected with the medicine inlet channel 202 through the medicine container connection port 208, medicine enters the medicine inlet channel 202, the wrench 305 is pulled backwards by hand, the wrench 305 generates thrust to the trigger end 331 of the elastic trigger piece 303, the elastic trigger piece 303 drives the connecting body 301 to slide backwards, so that the central push rod 204 and the medicine control valve 203 are driven to move backwards, when the medicine moves forwards relative to the valve body 211, the ball 213 is pushed to move forwards and open the medicine guide pipe 212, meanwhile, the medicine continuously flows into the medicine containing cavity 205, under the action of the leak-proof sealing membrane 206, the medicine is reserved in the medicine containing cavity 205, when the trigger end 331 of the elastic trigger piece 303 moves to the top end 341 of the quantitative control rod 342, the top end 331 is opened under the continuous backward acting force of the elastic trigger piece 303, so that the trigger end 311 leaves the trigger channel 205, the top end 205 and the wrench 305 are kept full of the medicine containing cavity 205, and the medicine is prevented from continuously moving into the medicine containing cavity 205; then automatically releasing the wrench 305, under the action of the compression spring 302, the compression spring 302 rapidly pushes the connector 301 to move forward, and drives the central push rod 204 to move forward, and simultaneously drives the drug control valve 203 to move forward rapidly, the ball 213 seals the drug solution guiding tube 212, and the drug solution in the drug solution accommodating cavity 205 is forced to be ejected from the nozzle 201 in the forward movement process of the drug control valve 203, so as to complete the injection. The liquid medicine spraying speed of the invention is 350-400 m/s.
After one injection is completed, the wrench 305 is continuously pulled, and the steps are repeated, so that continuous multiple injections can be realized. Meanwhile, the dose adjusting knob 344 is rotated to drive the adjusting screw 343 to rotate, so that the quantitative control rod 342 at the front part of the dose control assembly 304 moves back and forth under the action of the screw thread to adjust the distance of the trigger channel 311, thereby adjusting the capacity of the liquid medicine accommodating cavity 205 to control the injection quantity of the medicine; simultaneously with the rotational movement of the dosing rod 342, the annular wall 347 follows the rotational movement of the dosing rod 342, thereby displaying different scale values within the dose display window 101 for facilitating viewing and adjusting the dose of medicament.
The invention has the advantages of accurate dosage control, flexible and convenient operation, long service life and low cost, and can be suitable for various occasions.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the inventors regard such subject matter as not be considered to be part of the disclosed subject matter.
Claims (9)
1. An adjustable dose needleless continuous injector comprising a housing, characterized in that: the device also comprises a spray head assembly, a pushing assembly and a resetting assembly;
the spray head assembly comprises a spray head, a medicine inlet channel connected with the spray head, a medicine control valve and a central push rod, wherein the medicine control valve and the central push rod are positioned in the medicine inlet channel, the front end of the central push rod is connected with the medicine control valve, and the medicine control valve is driven by the central push rod and slides back and forth in the medicine inlet channel; when the drug control valve slides backwards, a drug solution accommodating cavity is formed at the front end of the drug control valve;
the pushing component comprises a connecting body, a compression spring, an elastic trigger piece, a dose control component and a spanner;
the front end of the connector is connected with the rear end of the central push rod, a trigger channel for accommodating the front part of the dose control assembly is arranged in the center of the connector, one end of the elastic trigger piece is fixed on the connector, the other end of the elastic trigger piece is a trigger end, the trigger end is positioned in the trigger channel, and the middle part of the wrench is in contact with the front end of the elastic trigger piece; the compression spring is positioned between the rear end of the connector and the dose control assembly; the front end of the dose control assembly is a top opening end which can enable the trigger end to leave the trigger channel; the distance between the front end of the dose control assembly and the triggering end of the elastic triggering piece is in direct proportion to the length of the liquid medicine accommodating cavity;
the wrench is connected with or contacted with the reset component;
the dose control assembly comprises a quantitative control rod, an adjusting screw rod and a dose adjusting knob, wherein the front part of the quantitative control rod extends into a rod body in the trigger channel, a fixed base used for fixing the compression spring is arranged at the rear part of the quantitative control rod, a threaded adjusting channel is arranged at the center of the rear part of the quantitative control rod, the front part of the adjusting screw rod is connected with the threaded adjusting channel, and the rear end of the adjusting screw rod is connected with the dose adjusting knob.
2. The adjustable dose needleless continuous injector of claim 1, wherein: the rear part of the quantitative control rod is provided with a ring wall connected with the fixed base, the outer side surface of the ring wall is provided with scales, and the shell is provided with a dose display window for displaying the scales.
3. The adjustable dose needleless continuous injector of claim 1 or 2, wherein: the dose adjusting knob is located outside the shell, the main body of the adjusting screw rod is limited in the shell by a rear cover sealing flange, and an anti-sliding steel ball is arranged between the dose adjusting knob and the rear cover sealing flange.
4. The adjustable dose needleless continuous injector of claim 1, wherein: a leak-proof sealing film is arranged between the medicine inlet channel and the spray head.
5. The adjustable dose needleless continuous injector of claim 1, wherein: a liquid medicine container connection port is arranged on the medicine inlet channel; the medicine control valve is a one-way ball valve.
6. The adjustable dose needleless continuous injector of claim 1 or 5, wherein: the medicine control valve comprises a valve body, a medicine liquid guiding pipe, a ball accommodating cavity and a medicine ejection port, wherein the medicine ejection port is positioned at the front end of the ball accommodating cavity, one end of the medicine liquid guiding pipe is communicated with the ball accommodating cavity, the other end of the medicine liquid guiding pipe is communicated with the medicine entering channel, and the ball is positioned in the ball accommodating cavity.
7. The adjustable dose needleless continuous injector of claim 4, wherein: a filter screen is arranged in the spray head or at one side of the leak-proof sealing film.
8. The adjustable dose needleless continuous injector of claim 1, wherein: the reset assembly comprises a spanner reset device and a spanner reset spring, wherein a reset spring installation cavity is formed in the shell, the spanner reset device is connected with the reset spring installation cavity in a sliding mode, the spanner reset spring is located in the spanner reset device and the reset spring installation cavity, and one end of the spanner reset device is in contact with or is connected with the spanner.
9. The adjustable dose needleless continuous injector of claim 1, wherein: a sliding sealing piece is arranged between the rear end of the medicine inlet channel and the central push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142880.9A CN109731186B (en) | 2019-02-26 | 2019-02-26 | Adjustable dose needleless continuous injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142880.9A CN109731186B (en) | 2019-02-26 | 2019-02-26 | Adjustable dose needleless continuous injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109731186A CN109731186A (en) | 2019-05-10 |
| CN109731186B true CN109731186B (en) | 2023-11-03 |
Family
ID=66368406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910142880.9A Active CN109731186B (en) | 2019-02-26 | 2019-02-26 | Adjustable dose needleless continuous injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109731186B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544706B (en) * | 2020-05-11 | 2022-03-18 | 易舒康(山东)生物科技有限公司 | Accurate portable needleless injector of dosage |
| CN111773525B (en) * | 2020-06-10 | 2022-03-01 | 许云霞 | Medicine spraying device for respiratory medicine |
| CN113456289B (en) * | 2021-07-15 | 2024-03-01 | 武汉市正华精机技术发展有限公司 | Multi-nozzle device of needleless injector for animals |
| CN113599638A (en) * | 2021-08-10 | 2021-11-05 | 南方医科大学珠江医院 | Intelligent high-pressure jet analgesia instrument |
| CN114870163B (en) * | 2022-06-06 | 2023-12-19 | 江苏乐聚医药科技有限公司 | Air spring mixed needleless injector |
| CN115591055B (en) * | 2022-08-24 | 2023-11-07 | 江苏乐聚医药科技有限公司 | Differential needleless injector |
| CN115463289B (en) * | 2022-09-07 | 2024-04-02 | 北京快舒尔医疗技术有限公司 | Needleless injector |
| CN117771483A (en) * | 2023-06-21 | 2024-03-29 | 卓优医疗(苏州)有限公司 | Needleless injection device capable of continuously and automatically injecting and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120103859A (en) * | 2011-03-11 | 2012-09-20 | (주)송암유엔시 | Needleless injection device |
| CN202844263U (en) * | 2012-11-02 | 2013-04-03 | 江苏丞宇米特医疗科技有限公司 | Low pressure needleless injector for people |
| CN104470578A (en) * | 2012-07-19 | 2015-03-25 | 株式会社爱茉莉太平洋 | Nozzle device and minimally invasive injection device comprising same |
| CN207237050U (en) * | 2017-03-10 | 2018-04-17 | 潘锦霞 | One kind is new can running fire needleless injector |
| CN209864894U (en) * | 2019-02-26 | 2019-12-31 | 上海昊正医疗科技有限公司 | Adjustable dose needleless continuous injector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6689101B2 (en) * | 2000-05-22 | 2004-02-10 | Pharmacia Ab | Medical arrangement |
| US20140039409A1 (en) * | 2010-12-29 | 2014-02-06 | Novo Nordisk A/S | Device for Injecting Adjustable Doses of Liquid Drug |
| TWI532511B (en) * | 2013-08-16 | 2016-05-11 | 京華堂實業股份有限公司 | A needleless drug-injecting system and a drug-injecting method thereof |
-
2019
- 2019-02-26 CN CN201910142880.9A patent/CN109731186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120103859A (en) * | 2011-03-11 | 2012-09-20 | (주)송암유엔시 | Needleless injection device |
| CN104470578A (en) * | 2012-07-19 | 2015-03-25 | 株式会社爱茉莉太平洋 | Nozzle device and minimally invasive injection device comprising same |
| CN202844263U (en) * | 2012-11-02 | 2013-04-03 | 江苏丞宇米特医疗科技有限公司 | Low pressure needleless injector for people |
| CN207237050U (en) * | 2017-03-10 | 2018-04-17 | 潘锦霞 | One kind is new can running fire needleless injector |
| CN209864894U (en) * | 2019-02-26 | 2019-12-31 | 上海昊正医疗科技有限公司 | Adjustable dose needleless continuous injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109731186A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109731186B (en) | Adjustable dose needleless continuous injector | |
| JP3257794B2 (en) | Needleless syringe | |
| RU2179864C2 (en) | Needleless injector | |
| CN209864894U (en) | Adjustable dose needleless continuous injector | |
| US4592742A (en) | Pressure hypodermic syringe | |
| US9662449B2 (en) | Needle-free injectors and design parameters thereof that optimize injection performance | |
| US4447225A (en) | Multidose jet injector | |
| US6939319B1 (en) | Process and device for single use, needle-free intradermal, subcutaneous, or intramuscular injections | |
| EP1474192B1 (en) | Needleless injector | |
| CN102499787B (en) | Split type needle-free injection system used for animal injection | |
| CN106512149B (en) | Pneumatic needleless injector | |
| JP2007518460A (en) | Needleless syringes and ampoules for intradermal, subcutaneous and intramuscular injection | |
| KR20120103859A (en) | Needleless injection device | |
| WO2021027738A1 (en) | Single-charge multiple-injection needleless injector | |
| KR101397129B1 (en) | Medication injection device | |
| CN202459643U (en) | Needless injector | |
| CN105879159A (en) | Reusable injector and working method thereof | |
| CN105498047A (en) | Low-pressure needle-free injection device | |
| CN211301530U (en) | Intelligent painless injector control box | |
| Lindmayer et al. | Development of new jet injector for insulin therapy | |
| CN104096299B (en) | Therapeutic equipment for the injection of human body medicine trace | |
| CN203861699U (en) | Manpower-driven energy storage type needleless injector | |
| CN206548948U (en) | The nozzle that a kind of atomizing syringe is used | |
| CN116271341A (en) | Pneumatic semiautomatic needleless injector | |
| KR101859735B1 (en) | Painless injection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qian Jinlong Inventor after: Li Jiefeng Inventor before: Qian Jinlong Inventor before: Li Jiefeng Inventor before: Zheng Jie |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |