CN109731186A - Adjustable dosage needleless continuous syringe - Google Patents

Adjustable dosage needleless continuous syringe Download PDF

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Publication number
CN109731186A
CN109731186A CN201910142880.9A CN201910142880A CN109731186A CN 109731186 A CN109731186 A CN 109731186A CN 201910142880 A CN201910142880 A CN 201910142880A CN 109731186 A CN109731186 A CN 109731186A
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CN
China
Prior art keywords
drug
dosage
control valve
needleless
spanner
Prior art date
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Pending
Application number
CN201910142880.9A
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Chinese (zh)
Inventor
钱金龙
李杰峰
郑捷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Haozheng Medical Technology Co Ltd
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Shanghai Haozheng Medical Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Haozheng Medical Technology Co Ltd filed Critical Shanghai Haozheng Medical Technology Co Ltd
Priority to CN201910142880.9A priority Critical patent/CN109731186A/en
Publication of CN109731186A publication Critical patent/CN109731186A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of adjustable dosage needleless continuous syringes.It includes shell, nozzle component, pushing component and reset assembly;The nozzle component includes that spray head, the drug being connected with spray head enter channel, enter drug control valve and the center push rod in channel positioned at the drug, the front end of the center push rod is connected with the drug control valve, when the drug control valve slides backward, medical fluid accommodating chamber is formed in the front end of the drug control valve;The pushing component includes connector, compressed spring, elastic trigger member, dosage control assembly and spanner;Drive the center push rod that the drug control valve is pushed to move forward by the pushing component, under compressed spring and the synergistic effect of drug control valve, a high pressure kinetic energy is generated in medical fluid accommodating chamber, the spray head for pushing medical fluid high speed to pass through nozzle component generates one high-pressure jet, moment penetrates dermal layer of the skin, into subcutaneous tissue, injection is completed.

Description

Adjustable dosage needleless continuous syringe
Technical field
The present invention discloses a kind of adjustable dosage needleless continuous syringe, belongs to the field of medical instrument technology.
Background technique
There are many needleless injector product, majorities to be confined to the insulin therapy side of diabetes patient for overseas enterprise's production at present Face, in terms of also having part to apply to the injection of poultry class epidemic preventing vaccine, what device structure used is substantially the small micro- dosage of passivity Needleless injector or active property needleless injector, the shortcoming of these products be that service speed is slow, every injection is primary to be needed Adjustment is primary, and injection dosage is small, and adjustable extent is small, and low efficiency, service life are short, does not depend on the needleless of small micro- dosage of additional kinetic energy source Syringe price is expensive, and rely on power source special controller, air pressure pump, air compression tank active property Needleless injection Device price is with regard to very expensive, and there is bulky, inconvenient to carry, high failure rate, the high disadvantages of standing charges.
Country's syringe products active or passive there are also the needleless that enterprise produces, be essentially all imitation or it is high External product is copied, function is limited, expensive.The passivity needleless injector of comparative maturity is also only limited to beat insulin Utilization, operating efficiency is low, and price is really also close to external product, at present the inferior position of these equipment, it will be apparent that limits The utilization of needleless injector in other respects.
The equipment for thering is a kind of drug electrophoresis to import in the past, with the energy charge species among direct current positive and negative electrode to negative The principle of pole electrophoresis makes drug electrification enter human body, this itself will be carried out by a kind of electrically charged medium, the pole of drug Property and polar size be all the factor for influencing administration success or not, time long speed is slow, the denaturation of the ingredient of drug ionization It is a problem, the property that most importantly drug imports subcutaneous rear medium changes, and the depth that drug imports can not just be grasped.
The equipment of supersonic medicine introduction method, it is huge that there is also equipment, and the environmental requirement that drug imports is special, importing Amount and speed are undesirable, and depth and amount can not all be grasped, and it is also brighter that the Cavitation effect of ultrasonic wave generates uncomfortable influence to body It is aobvious, it is not suitable with flexible use condition.
Application No. is 201720237476.6 patent applications, disclose a kind of novel hair needleless injector, master Wanting structure includes the injecting assembly being arranged in syringe, the pressure-applying unit being arranged in outside syringe, the dosage that syringe front end is arranged in Adjuster, wherein the amount adjustor is the cylindrical body for the inside hollow out being socketed in outside Syringe injector front end, the injection Component includes striker, pressing spring and biased switch, and main working process is: by the pressure-applying unit to the injection group The pressing spring of part is pressurizeed, and is made injection and is prepared, then pressing spring pressure is discharged by pressing the biased switch, to push away Dynamic striker impact pencil is injected;The wherein control method of liquid volume are as follows: the amount adjustor and Syringe injector front end It is threadedly coupled, the relative position between pencil and Syringe injector is driven by rotation, makes the injection volume of each medical fluid in striker Stroke range in, complete calibrated shot.The advantages of syringe is to may be implemented the medical fluid in pencil being divided into fixed quantity Injection, to realize after once filling pencil, continuous fixed quantity injection.But its defect is: firstly, pressure-applying unit and injection group The biased switch of part is provided separately, and is needed in addition to press biased switch after the pressurizing and be injected, it usually needs both hands operation, It is not convenient enough in operation.Secondly, pencil needs to draw medical fluid in ampoule bottle by manual operation, it then will be filled medical fluid again Pencil is connect by amount adjustor with Syringe injector front end, since pencil is adjusted by the removably and dosage of spiral Device is connected, since spiral is respectively adopted between amount adjustor and Syringe injector front end, between pencil and amount adjustor Structure, during striker impact pencil, it is easy to which recurring structure loosens, and structural instability is caused, to influence medical fluid The precision of dosage and the service life of equipment;Operationally, the structure is not only cumbersome, while increasing drug secondary pollution Risk;Third, since the injection volume of medical fluid is determined by the stroke range of the striker, and in the syringe, the stroke of striker It is fixed, it can not be adjusted, therefore, the liquid volume of per injection is only this fixed value, although realizing the continuous of drug Injection, but per injection amount all can only be a kind of fixed dosage injection, limit its use scope, and for adjustable injection The multiple mode continuously injected of dosage, the syringe are then unable to complete.
Summary of the invention
In order to solve the above problems existing in the present technology, it is an object of that present invention to provide a kind of drug doses accurately to control System, easy to operate, long service life, adjustable dosage needleless continuous syringe at low cost.
In order to achieve the above object, the technical scheme adopted by the invention is as follows: a kind of adjustable dosage needleless continuous syringe, Including shell, nozzle component, pushing component and reset assembly;
The nozzle component includes that spray head, the drug being connected with spray head enter channel, enter in channel positioned at the drug Drug control valve and center push rod, the front end of the center push rod be connected with the drug control valve, the drug control valve It is driven by the center push rod and is entered in channel in the drug and slid back and forth;When the drug control valve slides backward, Medical fluid accommodating chamber is formed in the front end of the drug control valve;
The pushing component includes connector, compressed spring, elastic trigger member, dosage control assembly and spanner;
The front end of the connector is connected with the rear end of the center push rod, and the center of the connector is equipped with for accommodating One end of the trigger port of dosage control assembly front, the elasticity trigger member is fixed on the connector, the bullet Property trigger member the other end be triggering end, the triggering end is located in the trigger port, the middle part of the spanner and the bullet The preceding end in contact of property trigger member;The compressed spring is located between the rear end and the dosage control assembly of the connector;Institute State dosage control assembly front end be the triggering end can be made to leave the trigger port open end;The dosage control assembly The distance between front end and triggering end of the elastic trigger member are directlyed proportional to the length of the medical fluid accommodating chamber;
The spanner is connected or contacts with the reset assembly.
Further, the dosage control assembly includes quantitative control-rod, adjusts screw rod and dose knob, described fixed The front for measuring control-rod is the body of rod protruded into the trigger port, and the rear portion of the quantitative control-rod is equipped with for described in fixed The firm banking of compressed spring, the posterior center of the quantitative control-rod are equipped with screw thread and adjust channel, before the adjusting screw rod Portion adjusts channel with the screw thread and is connected, and the rear end for adjusting screw rod is connected with the dose knob.
Further, the rear portion of the quantitative control-rod is equipped with the ring wall being connected with the firm banking, the ring wall Outer surface is equipped with scale, and the shell is equipped with the dosage display window for showing the scale.
Further, the dose knob is located at outside the shell, and the main body for adjusting screw rod is closed by rear cover Flange is limited in the shell, is equipped with anti-slip steel ball between the dose knob and rear cover closing flange.
Further, the drug, which enters, is equipped with leakproof close membrane between channel and the spray head.
Further, the drug enters channel equipped with medical liquid container connector;The drug control valve is single-direction balls Valve.
Further, the drug control valve includes that valve body, medical fluid guiding tube, ball, ball accommodating chamber and drug spray Mouthful, the drug ejiction opening is located at the front end of the ball accommodating chamber, and one end of the medical fluid guiding tube and the ball accommodate Chamber is connected, and the other end of the medical fluid guiding tube enters channel with the drug and is connected, and the ceramics ball is located at described In ball accommodating chamber.
Further, in the spray head or side of the leakproof close membrane is equipped with strainer.
Further, the reset assembly includes spanner restorer and spanner reset spring, and the shell, which is equipped with, to be resetted Spring installation cavity, the spanner restorer are connected with reset spring installation cavity sliding, and the spanner reset spring is located at institute It states in spanner restorer and the reset spring installation cavity, one end of the spanner restorer contacts or is connected with the spanner.
Further, the drug, which enters, is equipped with sliding seal between the rear end in channel and the center push rod;It is described The preferred sealing ring of sliding seal.
The invention has the benefit that the present invention is made of mechanical structure, when work, relies on manual actuation spanner, thus band Dynamic pushing component movement generates a high pressure kinetic energy under compressed spring and the synergistic effect of reset assembly, pushes liquid-type medicine The spray head that agent high speed passes through nozzle component generates one high-pressure jet, and moment penetrates dermal layer of the skin, into subcutaneous tissue, completes Injection.Movement solenoid valve, the air pressure pump, compression that the present invention without in addition configuration power source special power supply, has saved highly energy-consuming true Gas tank etc. it is miscellaneous and and loop additional power source, the drug dose of injection can be adjusted in user's setting range, only with one hand Behaviour can continuously inject.By the dosage control assembly, the range that drug dose is adjusted is big.Operation of the present invention is simple, It is sturdy and durable, it is easy to carry, it adapts to normally be worked in the environment of very severe, plays safe and efficient function. When work can rapidly and also continuously injection figure medicament, medical staff only need to be by the requirements of sterile working, in syringe Liquid-type medicament is added in cavity or loads onto the corresponding apothecary jar of large dosage, is equipped with injection dosage tune at the rear portion of needleless injector Save knob, need to inject the dosage of drug by reading in the dosage display window on shell, so as to be suitable for different pharmaceutical and The requirement of object, operator only need one hand to hold needleless injector alignment skin part and pull spanner i.e. injectable, unclamp Spanner repeats to pull the multiple continuously injection different parts that just can be carried out second, third time etc., and injection is primary only to be needed Several seconds time of zero point is distributed in diffusivity disperse state since medical liquid jet enters after skin corium, is not easy to generate in injection site Lump tubercle.
The scope of application of the present invention:
1, in terms of the subcutaneous administration treatment of the more acupuncture point points of tcm clinical practice, needleless injector can be improved subcutaneous medicament injection Effect, for many shortcomings of other medications, the medication of adjustable dosage needleless continuous syringe can make More acupuncture point point dosing techniques of clinical medicine medical treatment become to be simple and efficient, accurate quick, securely and reliably.
2 or when having war and disastrous occurrence to occur, medical staff faces the large batch of disable person, rescue work amount Very big, which can be readily used for emergency hemostasis, the analgesic, anti-wound infection, cleaning of disable person's wound site The new tool of more effects such as the surface of a wound, needleless injector do not have to frequent exchange syringe needle, can rapidly replace different works Apothecary jar can promptly put effect to good use to wound face, can with most fast speed, the smallest damage, reach hemostasis, analgesic, Anti-infective, the cleaning surface of a wound the rescue purpose.
3, in terms of the vaccinoprophylaxis of high-volume crowd or poultry kinesin-like protein, the needleless injector is easy to carry, Simple and direct safety, is greatly lowered the labor intensity of health epidemic prevention personnel, and adjustable dosage needleless continuous syringe has extensively Prospect of the application.
4, certain to need subcutaneous or submucosal administration occasion, it can using adjustable dosage needleless continuous syringe dosage size The characteristics of tune, is more applicable for the insulin therapy of diabetes, scar tissue repairing and treating, and local organization wellability is anaesthetized, shallowly Table neoplasm targeted therapy, stem cell, creotoxin, the injection of sheep placenta part modified etc., accurate positioning is easy to operate, pain Feel small.
5, the present invention can enter disinfection treatment in high-temperature high-pressure apparatus, when injection skin contactable be also close to skin into Row, injection time is short, only can be completed within zero point several seconds, and conventional syringe needle set is avoided to cause the probably needle sense, obvious of many patients Mitigate sensation of pain when injection, reduces the Probability of hospital-acquired infection and intercrossing infection.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is structural schematic diagram when connector of the present invention moves backward.
Fig. 3 is the structural schematic diagram of overlook direction when pushing component of the present invention resets.
Fig. 4 be pushing component of the present invention elastic trigger member by dosage control assembly eject trigger port when overlook direction Structural schematic diagram.
Fig. 5 is the structural schematic diagram of nozzle component when pushing component of the present invention resets.
Fig. 6 is the structural schematic diagram of nozzle component when center push rod of the present invention moves backward.
In figure: 1, shell;101, dosage display window;
201, spray head;202, drug enters channel;203, drug control valve;204, center push rod;205, medical fluid accommodating chamber; 206, leakproof close membrane;207, strainer;208, medical liquid container connector;209, sliding seal;
211, valve body;212, medical fluid guiding tube;213, ball;214, ball accommodating chamber;215, drug ejiction opening;
301, connector;302, compressed spring;303, elastic trigger member;304, dosage control assembly;305, spanner;
311, trigger port;331, triggering end;
341, end is opened;342, quantitative control-rod;343, screw rod is adjusted;344, dose knob;345, firm banking; 346, screw thread adjusts channel;347, ring wall;
4, apothecary jar;5, rear cover closes flange;6, anti-slip steel ball;
701, spanner restorer;702, spanner reset spring;703, reset spring installation cavity;
8, handle.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without making creative work, all should belong to guarantor of the present invention The range of shield.
According to Fig. 1-Fig. 6, a kind of adjustable dosage needleless continuous syringe of the present invention, including shell 1, nozzle component, promotion Component and reset assembly.
The nozzle component include spray head 201, the drug being connected with spray head 201 enter channel 202, be located at the drug into Enter the drug control valve 203 and center push rod 204 in channel 202.The drug enters between channel 202 and the spray head 201 Equipped with leakproof close membrane 206 and strainer 207, the preferred stainless steel filtering net of the strainer 207.The outer diameter of the center push rod 204 is small Enter the internal diameter in channel 202 in the drug, enters in channel 202 in the main body of the center push rod 204 and the drug The gap area for flowing into drug is formed between wall.The front end of the center push rod 204 and 203 phase of drug control valve Even.The drug, which enters, is equipped with sliding seal 209 between the rear end in channel 202 and the center push rod 204, the sliding is close The preferred sealing ring of sealing 209.The drug enters channel 202 equipped with medical liquid container connector 208, the medical liquid container connection Mouth 208 is for connecting apothecary jar 4;Medicament in the apothecary jar 4 enters the drug by medical liquid container connector 208 and enters Channel 202.The preferably unidirectional ball valve of the drug control valve 203.
The drug control valve 203 includes valve body 211, medical fluid guiding tube 212, ball 213, ball accommodating chamber 214 and medicine Object ejiction opening 215, the drug ejiction opening 215 are located at the front end of the ball accommodating chamber 214, the medical fluid guiding tube 212 One end is connected with the ball accommodating chamber 214, and the other end and the drug of the medical fluid guiding tube 212 enter channel 202 It is connected, the ball 213 is located in the ball accommodating chamber 214, and the ball 213 is for blocking the medical fluid guiding tube 212 or for open and connection described in drug ejiction opening 215, ball accommodating chamber 214 and medical fluid guiding tube 212.The ball 213 It is preferred that corrosion resistant hard ball, such as ceramic ball, stainless steel ball.
The drug control valve 203 is driven by the center push rod 204 and enters front and back in channel 202 in the drug Sliding;When the drug control valve 203 slides backward, medical fluid accommodating chamber 205 is formed in the front end of the drug control valve 203. The reset state of the drug control valve 203 are as follows: the drug control valve 203 is located at the front end that the drug enters channel 202, The ball 213 closes the medical fluid guiding tube 212.When the drug control valve 203 moves backward, drug enters channel Medical fluid in 202 flows to ball accommodating chamber 214 by the medical fluid guiding tube 212, and the ball 213 is opened, medical fluid guides Pipe 212 is opened, before medical fluid enters drug control valve 203 by the drug ejiction opening 215 outflow after ball accommodating chamber 214 The medical fluid accommodating chamber 205 at end is kept in, and the leakproof close membrane 206 is for stopping medical fluid to flow out naturally from spray head 201.
The pushing component includes connector 301, compressed spring 302, elastic trigger member 303,304 and of dosage control assembly Spanner 305.
The front end of the connector 301 is connected with the rear end of the center push rod 204, and the center of the connector 301 is set There is the trigger port 311 for accommodating 304 front of dosage control assembly, one end of the elasticity trigger member 303 is fixed on On the connector 301, the other end of the elasticity trigger member 303 is triggering end 331, and the triggering end 331 is located at the touching It sends out in channel 311, the preceding end in contact at the middle part of the spanner 305 and the elastic trigger member 303;The upper end of the spanner 305 It is hinged on the shell 1, the lower end of the spanner 305 passes through the lower part of the trigger port 311 and shell 1;The spanner 305 middle and lower part is connected or contacts with the reset assembly.The compressed spring 302 be located at the rear end of the connector 301 with Between the dosage control assembly 304.
304 front end of dosage control assembly is that the triggering end 331 can be made to leave opening for the trigger port 311 End 341;The distance between triggering end 331 of 304 front end of dosage control assembly and the elastic trigger member 303, with it is described The length of medical fluid accommodating chamber 205 is directly proportional, the triggering end of 304 front end of dosage control assembly and the elastic trigger member 303 The distance between 331, it determines the liquid dose in the medical fluid accommodating chamber 205, is adjusted by the dosage control assembly 304 The distance between the triggering end 331 of 304 front end of dosage control assembly and the elastic trigger member 303, to change the medical fluid The length of accommodating chamber 205 realizes the adjusting of liquid medicine injection dosage.
The dosage control assembly 304 includes quantitative control-rod 342, adjusts screw rod 343 and dose knob 344, institute The front for stating quantitative control-rod 342 is the body of rod protruded into the trigger port 311, and the front end of the body of rod is described opens End 341, the rear portion of the quantitative control-rod 342 is equipped with the firm banking 345 for fixing the compressed spring 302, described fixed The posterior center for measuring control-rod 342 is equipped with screw thread and adjusts channel 346, and the front for adjusting screw rod 343 and the screw thread are adjusted Channel 346 is connected, and the rear end for adjusting screw rod 343 is connected with the dose knob 344.As preferred embodiment party Formula, the rear portion of the quantitative control-rod 342 are equipped with the ring wall 347 being connected with the firm banking 345, the ring wall 347 outside Side surface is equipped with scale, and the shell 1 is equipped with the dosage display window 101 for showing the scale.The dosage adjusts rotation Button 344 is located at outside the shell 1, and the main body for adjusting screw rod 343 is limited in the shell 1 by rear cover closing flange 5, institute It states and is equipped with anti-slip steel ball 6 between dose knob 344 and rear cover closing flange 5.
The reset assembly includes spanner restorer 701 and spanner reset spring 702, and the shell 1, which is equipped with, resets bullet Spring installation cavity 703, the spanner restorer 701 are connected with the reset spring installation cavity 703 sliding, the spanner reset spring 702 are located in the spanner restorer 701 and the reset spring installation cavity 703, one end of the spanner restorer 702 and institute It states the contact of spanner 305 or is connected.
The lower right of the shell 1 is equipped with handle 8, applies when the handle 8 is convenient hand-held and injects to the spanner 305 Power.
The present invention is in use, the spanner 305 is in reset state under the action of reset assembly, by the apothecary jar 4 Enter channel 202 with the drug by the medical liquid container connector 208 to connect, medical fluid enters drug and enters channel 202, uses Hand pulls the spanner 305 backward, and the spanner 305 generates thrust, elasticity to the triggering end 331 of the elastic trigger member 303 Trigger member 303 drives the connector 301 to slide backward, to drive the center push rod 204 and drug control valve 203 backward It is mobile, it is moved forward in medical fluid with respect to valve body 211, pushes the ball 213 to move forward and open the medical fluid guiding tube 212, while medical fluid continues to flow into the medical fluid accommodating chamber 205, under the action of leakproof close membrane 206, the medical fluid is temporary It stays in the medical fluid accommodating chamber 205, when the triggering end 331 of the elastic trigger member 303 is moved to the quantitative control-rod 342 When opening end 341, the end that opens 341 opens the triggering end under the active force that elastic trigger member 303 continues backward 331, so that triggering end 331 is left the trigger port 311, the spanner 305 is contacted with the end 341 that opens, and prevents spanner 305 continue to move backward, and medical fluid enters the medical fluid accommodating chamber 205 and is full of the medical fluid accommodating chamber 205 at this time;Then automatic The spanner 305 is discharged, under the action of compressed spring 302, compressed spring 302 pushes rapidly the connector 301 to Forward It is dynamic, and drive the center push rod 204 to move forward, while driving the drug control valve 203 to move forward rapidly, ball The 213 closing medical fluid guiding tubes 212 force in the medical fluid accommodating chamber 205 during the drug control valve 203 Forward Medical fluid it is spouting from spray head 201, complete injection.Medical liquid spraying speed of the invention is 350~400m/s.
After the completion of one injection, continue to pull the spanner 305, repeat the above steps, continuous several times note may be implemented It penetrates.Meanwhile driving the adjusting screw rod 343 to rotate by rotating the dose knob 344, under threaded function, so that The quantitative control-rod 342 of 304 front of dosage control assembly is moved forward and backward, to adjust the distance of the trigger port 311, from And the capacity of the medical fluid accommodating chamber 205 is adjusted to control the amount of injection of medicament;In quantitative 342 moving in rotation of control-rod Meanwhile the ring wall 347 follows quantitative 342 moving in rotation of control-rod, to be shown in the dosage display window 101 Different scale value, to facilitate observation and regulating agent injection volume.
Dose of the present invention control is accurate, flexible and convenient operation, long service life, at low cost, be applicable to a variety of occasions into It exercises and uses.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed A part of subject matter.

Claims (10)

1. a kind of adjustable dosage needleless continuous syringe, including shell, it is characterised in that: further include nozzle component, pushing component And reset assembly;
The nozzle component includes that spray head, the drug being connected with spray head enter channel, enter the medicine in channel positioned at the drug Object control valve and center push rod, the front end of the center push rod are connected with the drug control valve, and the drug control valve passes through The center push rod drives and enters in channel in the drug and slides back and forth;When the drug control valve slides backward, in institute The front end for stating drug control valve forms medical fluid accommodating chamber;
The pushing component includes connector, compressed spring, elastic trigger member, dosage control assembly and spanner;
The front end of the connector is connected with the rear end of the center push rod, and the center of the connector is equipped with described for accommodating One end of the trigger port of dosage control assembly front, the elasticity trigger member is fixed on the connector, the elasticity touching The other end of outbox is triggering end, and the triggering end is located in the trigger port, and the middle part of the spanner and the elasticity are touched The preceding end in contact of outbox;The compressed spring is located between the rear end and the dosage control assembly of the connector;Described dose Amount control assembly front end be the triggering end can be made to leave the trigger port open end;Dosage control assembly front end The distance between triggering end of the elastic trigger member is directlyed proportional to the length of the medical fluid accommodating chamber;
The spanner is connected or contacts with the reset assembly.
2. adjustable dosage needleless continuous syringe according to claim 1, it is characterised in that: the dosage control assembly packet It includes quantitative control-rod, adjust screw rod and dose knob, the front of the quantitative control-rod is to protrude into the trigger port The body of rod, the rear portion of the quantitative control-rod is equipped with the firm banking for fixing the compressed spring, the quantitative control-rod Posterior center be equipped with screw thread and adjust channel, front and the screw thread adjusting channel for adjusting screw rod is connected, the adjusting The rear end of screw rod is connected with the dose knob.
3. adjustable dosage needleless continuous syringe according to claim 2, it is characterised in that: after the quantitative control-rod Portion is equipped with the ring wall being connected with the firm banking, and the outer surface of the ring wall is equipped with scale, and the shell is equipped with aobvious Show the dosage display window of the scale.
4. adjustable dosage needleless continuous syringe according to claim 2 or 3, it is characterised in that: the dosage adjusts rotation Button is located at outside the shell, and the main body for adjusting screw rod is limited in the shell by rear cover closing flange, the dosage tune It saves and is equipped with anti-slip steel ball between knob and rear cover closing flange.
5. adjustable dosage needleless continuous syringe according to claim 1, it is characterised in that: the drug enter channel with Leakproof close membrane is equipped between the spray head.
6. adjustable dosage needleless continuous syringe according to claim 1, it is characterised in that: the drug enters on channel Equipped with medical liquid container connector;The drug control valve is non-return valve.
7. adjustable dosage needleless continuous syringe according to claim 1 or 6, it is characterised in that: the drug control valve Including valve body, medical fluid guiding tube, ball, ball accommodating chamber and drug ejiction opening, the drug ejiction opening is located at ball appearance Receive the front end of chamber, one end of the medical fluid guiding tube is connected with the ball accommodating chamber, the other end of the medical fluid guiding tube Enter channel with the drug to be connected, the ball is located in the ball accommodating chamber.
8. adjustable dosage needleless continuous syringe according to claim 5, it is characterised in that: in the spray head or described anti- The side for leaking close membrane is equipped with strainer.
9. adjustable dosage needleless continuous syringe according to claim 1, it is characterised in that: the reset assembly includes pulling Hand restorer and spanner reset spring, the shell are equipped with reset spring installation cavity, the spanner restorer and the reset The sliding of spring installation cavity is connected, and the spanner reset spring is located in the spanner restorer and the reset spring installation cavity, One end of the spanner restorer contacts or is connected with the spanner.
10. adjustable dosage needleless continuous syringe according to claim 1, it is characterised in that: the drug enters channel Rear end and the center push rod between be equipped with sliding seal.
CN201910142880.9A 2019-02-26 2019-02-26 Adjustable dosage needleless continuous syringe Pending CN109731186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910142880.9A CN109731186A (en) 2019-02-26 2019-02-26 Adjustable dosage needleless continuous syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910142880.9A CN109731186A (en) 2019-02-26 2019-02-26 Adjustable dosage needleless continuous syringe

Publications (1)

Publication Number Publication Date
CN109731186A true CN109731186A (en) 2019-05-10

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CN201910142880.9A Pending CN109731186A (en) 2019-02-26 2019-02-26 Adjustable dosage needleless continuous syringe

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111544706A (en) * 2020-05-11 2020-08-18 易舒康(山东)生物科技有限公司 Accurate portable needleless injector of dosage
CN111773525A (en) * 2020-06-10 2020-10-16 谢月平 Medicine spraying device for respiratory medicine
CN113599638A (en) * 2021-08-10 2021-11-05 南方医科大学珠江医院 Intelligent high-pressure jet analgesia instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111544706A (en) * 2020-05-11 2020-08-18 易舒康(山东)生物科技有限公司 Accurate portable needleless injector of dosage
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
CN111773525A (en) * 2020-06-10 2020-10-16 谢月平 Medicine spraying device for respiratory medicine
CN113599638A (en) * 2021-08-10 2021-11-05 南方医科大学珠江医院 Intelligent high-pressure jet analgesia instrument

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