CN106823072B - Large dosage of needleless injector of medicine can independently be taken - Google Patents
Large dosage of needleless injector of medicine can independently be taken Download PDFInfo
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- CN106823072B CN106823072B CN201710064022.8A CN201710064022A CN106823072B CN 106823072 B CN106823072 B CN 106823072B CN 201710064022 A CN201710064022 A CN 201710064022A CN 106823072 B CN106823072 B CN 106823072B
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- medicine
- component
- hammer body
- seat
- shock
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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
- A61M5/31—Details
-
- 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
- A61M5/31525—Dosing
- A61M5/31531—Microsyringes, e.g. having piston bore diameter close or equal to needle shaft diameter
-
- 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
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- 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 present invention relates to medical instruments, disclose a kind of large dosage of needleless injector that can independently take medicine, pull component, trigger component, terminal injecting assembly by gun body, striker assembly, circulation, medicine locked component, medicine taking amount assignment component and conduit tube component is taken to constitute；It can overcome the deficiency that previous needleless injector is simply possible to use in drug dose injection by the purpose that is cumulative and realizing drug bolus infusion of multiple micro-injection；It, which is integrated with, independently takes medicine function, takes medicine by taking medicine locked component, medicine taking amount assignment component and conduit tube component that can easily realize, and medicine taking amount can flexibly be preset, and operation is simple, save trouble and labor, and efficiency is higher；Which reduce the acquisition cost of user, it is also beneficial to improve the portability of needleless injector, is provided a great convenience for user.
Description
Technical field
A kind of for drug bolus infusion and the nothing of medicine can be taken the present invention relates to a kind of medical instrument more particularly to independently
Needle injection.
Background technique
Needleless injection is a kind of punctures without syringe needle and reaches drug injection purpose novel injection technology, and having can subtract
The pain and fear of few drug injection reduce bacterium infection risk, avoid syringe needle from the generations of accidents such as scratching and fracture, drug
It absorbs fastly, many advantages, such as subcutaneously not playing scleroma and high injection efficiency is used for a long time, and then have in future clinical medical treatment
Broad application prospect.But the pre- preceding operation before traditional needleless injector per injection is relatively complicated, time-consuming and laborious, can not
Continuity injection is efficiently carried out, and injection dosage is made to become the short slab of existing needleless injector, can typically be only used to pancreas islet
The low dose of clinical injection of the drugs such as element, and it is not used to the clinical injection of the drugs such as the slightly larger antibiotic of dosage, interferon, this
Reason hinders needleless injector in the widespread adoption in clinical injection field.Application No. is 2016109677793 invention is special
Benefit discloses a kind of needleless injector, pulls component, trigger component and terminal injecting assembly by gun body, striker assembly, circulation
It constitutes, circulation can be driven to pull component circular flow by trigger component, and circulation can drive during pulling component circular flow
Make striker assembly efficiently gradually reciprocal completion " loading " and " excitation " movement, and realize terminal injecting assembly can quickly
Multiple micro-injection, by the cumulative large bolus injection for realizing drug of multiple micro-injection, which overcome previous tradition
The deficiency of product has expanded needleless injector in the application range in clinical medicine injection field, and then with wide before
Scape.
Disclosed in the patent of invention application No. is 2016109677793 in needleless injector, terminal injecting assembly is used for
Storage and release drug, are the important composition parts of needleless injector, in needleless injector before use, terminal injecting assembly is completed
Taking medicine is necessary operation；From the point of view of structure by terminal injecting assembly, prescription formula is taken using traditional needle-free injectors, that is, removes end
After holding injecting assembly, push rod being pulled back manually, piston being driven to move back, make to generate negative pressure at injection orifice, theoretical realize takes medicine whereby
Have no difficulty.But in general, in order to realize that preferable injection effect, the injection orifice of existing terminal injecting assembly mostly use micro-
(micron order) is designed in hole, and inflow velocity of the drug into medicine-storing tube is slow, and negative pressure needed for realization takes medicine is larger, using traditional manual
When mode carries out taking medicine, operation is time-consuming and laborious, and efficiency is lower, has big inconvenience；During taking medicine, medicine is taken in order to improve
Efficiency and often pull push rod backward with sudden force, be easy between push rod and piston connection and piston and medicine-storing tube between
Leakproofness damages, and reduces the job stability and service life of terminal injecting assembly；In addition, since aforementioned patent discloses
The advance of needleless injector be that the large bolus injection of drug, the capacity of medicine-storing tube and the dose prestored are all relatively previous
It is big, using taking the inconvenience showed during medicine more prominent manually.In conclusion the needleless injector can not be autonomous complete
At taking medicine to operate, terminal injecting assembly is carried out that medical instrument is taken to have inconvenience manually, wants guaranteeing terminal injecting assembly structure
Realize that efficient quick takes medicine in the case where stability, it is necessary to take medicine auxiliary device by matched, and it is matched can be preferable
That realizes said effect takes medicine auxiliary device not occur in the prior art.
For backward, though have terminal injecting assembly can be cooperated to use take medicine auxiliary device occur, and can gram
Take previous manual take medicine operate in deficiency, but there are still many defects in clinical application: on the one hand, take during medicine operates,
Terminal injecting assembly need to be removed from needleless injector main body, then be assembled in and take on medicine auxiliary device, process is cumbersome, operation
Inconvenience, influence take drug effect rate；On the other hand, while purchasing needleless injector, need in addition purchase it is matched use take medicine
Auxiliary device increases acquisition cost, and certain financial burden is brought to user；In addition, such as diabetes patient, is equipped with nothing
It often needs to carry after needle injection, therefore needleless injector has good portability and is of great significance, and must such as configure
In addition take medicine auxiliary tool just can normal use, certainly will have a greatly reduced quality in portable performance.
Summary of the invention
It is convenient and efficient, it can be achieved that large dosage of drug injection the purpose of the present invention is to provide a kind of easy to operate, especially without
The needleless injector that need to take the completion that medicine auxiliary device can be fast and simple that medicine is taken to operate by other.
To realize the above-mentioned technical purpose, the present invention adopts the following technical scheme:
A kind of large dosage of needleless injector that can independently take medicine comprising:
Gun body is made of the gun rack and gun barrel being fixedly connected；Cylindrical bore is equipped in gun barrel, the front end of gun barrel passes through
Neck tube is fixed with thread head, and neck tube side wall is equipped with an observation window for being labeled with injection dosage scale, bore, neck tube and thread head three
Person is coaxial；
Striker assembly is made of hammer body, elastic string and push type alarm；Hammer body is limited in bore and only can be axial
Mobile, the front end of hammer body is equipped with a tup small compared with its outer diameter, and the front end of tup is provided with the shock seat in blind hole shape, before hitting seat
A locking hole is provided on the side wall at end, the downside of hammer body is equipped with towing mechanism；Hammer body, tup and shock seat are coaxial with bore；
Elastic string is equipped with two, and elastic string and push type alarm are placed in gun body, when hammer body, which is moved rearwardly into, loads state, presses
Pressure type alarm issues alarm, and two elastic strings are in tensional state；Hammer body excitation after, will by two elastic strings drive and quickly before
It moves, hits seat and shock is generated to front side member；
Circulation pulls component, be placed in gun body and only can one-way circulation operating, during cycle operation, can drive
The state of loading that reaches for keeping striker assembly reciprocal is then excited, and recycles striker assembly with this, and gradually to front side portion
Part generates shock；
Trigger component is supported by gun body, taking human as external force as inputting, circulation can be driven to pull component one-way circulation
Operating；
Terminal injecting assembly comprising drive rod and the medicine-storing tube and piston for being slidingly sealed cooperation；Medicine-storing tube front end is set
There is injection orifice, rear end is equipped with thread bush；Drive rod can be stretched and can automatic retracted to shortest initial length, front end and work
Plug is fixedly connected, and rear end is equipped with the shock portion big compared with driving shank diameter, the retraction force foot that drive rod has in a stretched state
To drive piston to move backward in medicine-storing tube；Drive rod is equipped with one and constant and big compared with the tup outer diameter limit of plunger distance
Bolt, limited bolt outer wall are equipped with position mark；After terminal injecting assembly is combined with gun body, drive rod, shock portion and limited bolt are equal
And limited bolt and shock portion coaxial with seat is hit extend back through neck tube；Shock portion can protrude into the bottom for hitting in seat and being knocked seat
Portion is hit, and piston Forward is then driven to realize injection；The corresponding relationship of position mark and injection dosage scale can reflect shock portion
Axial position, and then clearly preset injection dosage；
Take medicine locked component comprising the first sliding groove that opens up on gun barrel along axial direction is fixed on outside gun barrel and with first
The parallel guide rail of sliding slot, the sliding block that is limited by first sliding groove and guide rail and can be only moved forward and backward are fixed with axial position on sliding block
Adjustable locking pin；Locking pin inner end can be protruded into through locking hole hits in seat and is locked in shock portion and hits in seat, thus slides
Block, shock portion can be moved back with tup；Locking pin inner end is after bore removal, not to the fortune of striker assembly and terminal injecting assembly
Row constitutes obstacle；
Medicine taking amount assignment component comprising the second sliding slot that opens up on gun barrel along axial direction is fixed on outside gun barrel and with
The parallel screw rod of two sliding slots can be only moved forward and backward with the adjusting nut of screw rod cooperation, by adjusting nut driving along second sliding slot
Travelling arm；The inner end of travelling arm is fixedly connected with the block arc being located in bore, and block arc is coaxial with tup；Arc gear
Block internal diameter is greater than the outer diameter of tup, and hammer body side wall is provided with the recessing groove for preventing that block arc is hindered to be moved forward and backward, thus arc
Block and striker assembly will not constitute the interruption of service between each other；Block arc internal diameter be less than limited bolt outer diameter, limited bolt with
It can not continue to move backward after supporting；The side of second sliding slot is equipped with medicine taking amount scale, adjusting nut and medicine taking amount scale
Corresponding relationship can reflect block arc axial position；
Conduit tube component comprising one conduit of bottom of a Capsule, Capsule is connected with syringe needle, and Capsule is salable to be nested with
Medicine-storing tube front end and be connected to injection orifice only with syringe needle.
Working principle when large dosage of needleless injector of medicine originally can independently be taken to inject are as follows:
It combines the terminal injecting assembly for being stored with medicament in gun body, position mark and injection is observed by observation window
The corresponding numerical value of dose calibration, and be adjusted by way of rotating terminal injecting assembly, thus complete the pre- of injection dosage
If；Terminal injecting assembly front end is supported in patient body-surface, drives circulation to pull component circular flow, circulation using trigger component
Dragging component drags hammer body first and moves backward, and when striker assembly reaches and loads state, push type alarm issues alarm, behaviour
Author becomes clear, and circulation, which will pull when component continues to run, to promote striker assembly to excite, after striker assembly excitation excitation, hammer body
It is driven by two elastic strings and is quickly moved forward, the final bottom for hitting seat implements to hit to shock portion, and piston, which is pushed, to move forward and make
Terminal injecting assembly complete a micro-injection, circulation pull component cycle operation, and then make terminal injecting assembly efficiently into
The multiple micro-injection of row, until striker assembly can not continue to drive piston Forward, the drug for so far completing preset dose is infused
It penetrates.
Working principle when originally large dosage of needleless injector of medicine can independently be taken to take medicine are as follows:
By the combination of terminal injecting assembly in gun body, and its position is adjusted by rotating terminal injecting assembly, it is ensured that driving
The shock portion of bar tail end, which protrudes into, to be hit in seat and supports with the bottom for hitting seat, is adjusted the position of locking pin, is made in locking pin
End is protruded into bore and is inserted into locking hole and is locked in shock portion and hits in seat, and thus shock portion and shock seat realize solid
Fixed connection；Rotating adjusting nut adjusts the corresponding relationship of itself and medicine taking amount scale, i.e., default medicine taking amount；It will be in conduit tube component
Capsule is buckled in the front end of medicine-storing tube, and syringe needle is put into the medicine container for filling medical fluid, and thus conduit tube component is terminal injection
Component and medicine container establish a medical fluid transfer passage, drive circulation to pull assembly operating using trigger component, circulation is dragged
It drags component and is moved backward hammer body is dragged, while shock portion, sliding block synchronize with tup and move backward, and can produce in medicine-storing tube at this time
Negative pressure is given birth to, the medical fluid in medicine container enters in medicine-storing tube through conduit tube component, but since the negative pressure in medicine-storing tube cannot be timely
Removal, as shock portion moves backward, drive rod will be stretched, and stop after striker assembly reaches the state of loading to trigger component
Operation, the portion of shock at this time is locked in constant position with tup, and drive rod leans on the retraction force itself having to piston reality
Steady and sustained tractive force is applied, the medical fluid in medicine container is gentle to be entered in medicine-storing tube, is moved rearwardly into limited bolt and arc
After shape block is supported, piston can not continue to move backward, and the medical fluid in terminal injecting assembly, which has had reached, this moment preset takes medicine
Amount；Locking pin is pulled out, shock portion is released and hits the locking between seat, drive rod bounces back to initial length, by conduit group
Part removes, that is, completes and entirely medicine is taken to operate.
Furthermore, the upper side wall of the bore is provided with an axially extending guide groove, and the upside of hammer body be equipped with
The guiding rib that sliding slot is slidably matched, one side guide groove and guiding rib cooperate, make hammer body be only axially movable in bore without
It can relatively rotate, on the other hand, guide groove and guiding rib cooperate, and hammer body is limited in preset stroke.
Furthermore, the gun body, striker assembly and terminal injecting assembly should have following relationship:
1. when the drug in terminal injecting assembly is in specified maximum reserves and hammer body is in its stroke front end, screw thread
Set and thread head can be combined in the case where shock portion does not support and hits seat bottom and connect, and guarantee terminal injecting assembly and
Gun body firm combination；
2. when thread bush is rotated, to reaching with thread head, minimum distance, medical fluid is emptied completely in medicine-storing tube and hammer body is in it
When stroke front end, shock portion is supported with shock seat bottom just.
Furthermore, the striker assembly, terminal injecting assembly, take medicine locked component and medicine taking amount assignment component to answer
With following relationship:
1. when hammer body and when the sliding block in medicine locked component being taken to be respectively positioned on the front end of respective stroke, locking pin and locking hole
The two center overlapping of axles；After in locking pin insertion locking hole, sliding block can with moving hammer until hammer body to reach its stroke last
End；
2. such as being driven when hammer body, adjusting nut are respectively positioned on respective stroke front end and shock portion is locked in shock seat
Bar is in initial length, then limited bolt is supported with block arc；When adjusting nut is located at its stroke rearmost end, as limited bolt with
Block arc is supported, then the pharmaceutical quantities in medicine-storing tube reach specified maximum reserves；
3. when shock portion move back to striker assembly with tup reach load state after, drive rod is in stretching and not complete always
Full tensional state.
Furthermore, an axis hole is provided on the sliding block, axis hole intersects with the central axis for hitting both seats, axis
Hole is parallel with the central axis of both locking holes, and locking pin is supported and is axially movable by axis hole, and the diameter of locking pin is less than locking
The outer end of the internal diameter in hole, locking pin is equipped with shank.
Furthermore, be fixed in the axis hole for locking pin apply resistance damping cushion rubber A, locking pin with
Damp cushion rubber A cooperation and can not automatic axial it is mobile.
Furthermore, the drive rod is made of front bar, rear bar and elastic component, and front bar is equal with the outer diameter of rear bar；
The front end of front bar is fixedly connected with the piston, and rear end is provided with the grafting chamber of blind hole shape, middle and back be fixed be overlapped with central shaft and
The limited bolt big compared with its diameter；The rear end of rear bar is connected with to be overlapped and the shock portion big compared with its diameter, front end are solid with central shaft
Surely there is the core bar being overlapped with central shaft, core bar is inserted into the grafting chamber of front bar and the two axial sliding fit, the front end of core bar
It is provided with the containing cavities of blind hole shape backward；Elastic component uses rubber rope or tension spring, and front end is fixedly connected with grafting chamber bottom, rear end
It is fixedly connected with containing cavities bottom, when drive rod is in initial length, that is, front bar and rear bar is supported, elastic component is still in stretching
State.
Furthermore, the adjusting nut is fixedly arranged at the front end with an axle bed being overlapped with central shaft, travelling arm it is outer
End is equipped with and one is nested with the axle sleeve on axle bed, the axle sleeve and axle bed can relative rotation, but can not axially opposing movement.
Furthermore, the front end outer wall of the adjusting nut is equipped with the secondary scale being distributed along its outer circle, and medicine taking amount is set
Determine the pointer that component is fixed equipped with a position and is used to cooperate with secondary scale, adjusting nut rotates a circle along screw rod, produces
Raw axial displacement is a scale unit of medicine taking amount scale.
Compared with prior art, the present invention it has the following beneficial effects: due to that circulation can be driven to drag using trigger component
The work of component one-way circulation is dragged, and then the state of loading that reaches for driving striker assembly reciprocal then excites, and makes terminal injecting assembly
Multiple micro-injection is efficiently carried out, by the purpose that is cumulative and realizing drug bolus infusion of multiple micro-injection, is overcome
Previous needleless injector is simply possible to use in the deficiency of drug dose injection, has expanded needleless injector in clinical injection field
Application range, and it is easy to operate；Originally it can independently take large dosage of needleless injector of medicine to be integrated with and independently take medicine function, through letter
It can carry out taking medicine after single operation setting, and medicine taking amount can flexibly be preset, medicine is taken to be not necessarily to remove terminal injecting assembly in the process,
Medical fluid enters the slow of terminal injecting assembly and operates simply, save trouble and labor in the process without artificial interference, and efficiency is higher；It is infusing
During the operation for penetrating and taking medicine, it is by trigger component, dragging component and striker assembly offer power is provided, not only structure
Simply, element usage is high, and overall cost is low, and reduces the difficulty of operation；Due to taking medicine in the process mainly by drive rod
Retraction power drive piston moves back, and the tractive force that piston is subject to is lasting, stables, gently, will not structure to terminal injecting assembly and
Performance, which is constituted, to be destroyed；Due to originally can independently take large dosage of needleless injector of medicine without taking the realization of medicine auxiliary device to take medicine,
The acquisition cost for reducing user is also beneficial to improve the portability of needleless injector, provide greatly just for user
Benefit.
Detailed description of the invention
Fig. 1 is one of the overall structure diagram that originally can independently take large dosage of needleless injector of medicine.
Fig. 2 be originally can independently take large dosage of needleless injector of medicine overall structure diagram two.
Fig. 3 is that originally can independently take the structural schematic diagram after large dosage of needleless injector cross-section of medicine.
Fig. 4 is gun barrel, striker assembly, terminal injecting assembly, medicine locked component and the decomposition of medicine taking amount assignment component is taken to show
It is intended to.
Fig. 5 is one of gun barrel and the structural schematic diagram that component is firmly connected with it.
Fig. 6 is gun barrel and the second structural representation that component is firmly connected with it.
Fig. 7 is the structural schematic diagram of striker assembly.
Fig. 8 is the structural schematic diagram of terminal injecting assembly.
Fig. 9 is to take the structural schematic diagram of sliding block and locking pin in medicine locked component.
Figure 10 is the cooperation schematic diagram of screw rod in medicine taking amount assignment component, adjusting nut, travelling arm and block arc.
Figure 11 be gun barrel, striker assembly, terminal injecting assembly, take medicine locked component and medicine taking amount assignment component to combine after
One of schematic diagram.
Figure 12 be gun barrel, striker assembly, terminal injecting assembly, take medicine locked component and medicine taking amount assignment component to combine after
The two of schematic diagram.
Figure 13 is one of the structural schematic diagram that originally can independently take large dosage of needleless injector of medicine to take the medicine initial stage.
Figure 14 is the second structural representation that originally can independently take large dosage of needleless injector of medicine to take the medicine initial stage.
Figure 15 is the cooperation schematic diagram that medicine locked component, terminal injecting assembly and striker assembly are taken during taking medicine.
Figure 16 is structural schematic diagram when originally large dosage of needleless injector of medicine can independently be taken to reach default medicine taking amount.
Figure 17 is the structural schematic diagram of drive rod.
Figure 18 is that adjusting nut adds the structural schematic diagram after secondary scale.
Figure 19 is the structural schematic diagram after drive rod is further improved
In figure, 1, gun barrel, 2, medicine taking amount assignment component, 3, take medicine locked component, 4, neck tube, 5, thread head, 6, thread bush,
7, medicine-storing tube, 8, Capsule, 9, conduit, 10, syringe needle, 11, gun rack, 12, trigger component, 13, observation window, 14, injection dosage scale,
15, push type alarm, 16, circulation dragging component, 17, drive rod, 18, shock portion, 19, sliding block, 20, locking pin, 21, first
Sliding slot, 22, guide rail, 23, elastic string, 24, shock seat, 25, locking hole, 26, tup, 27, hammer body, 28, recessing groove, 29, guiding
Muscle, 30, screw rod, 31, second sliding slot, 32, adjusting nut, 33, travelling arm, 34, block arc, 35, medicine taking amount scale, 36, position
Tagging, 37, limited bolt, 38, bore, 39, piston, 40, shank, 41, damping cushion rubber A, 42, towing mechanism, 43, axle bed, 44,
Axle sleeve, 45, guide groove, 46, grafting chamber, 47, containing cavities, 48, front bar, 49, elastic component, 50, rear bar, 51, core bar, 52, secondary
Scale, 53, pointer, 54, damping cushion rubber B.
Specific embodiment
Referring to shown in Fig. 1-3, one kind disclosed in this invention can independently take large dosage of needleless injector of medicine, by rifle
Body, striker assembly, circulation pull component 16, trigger component 12, terminal injecting assembly, take medicine locked component 3, medicine taking amount setting group
Part 2 and 9 component of conduit are constituted.
Wherein, referring to shown in Fig. 1,4,5,6, the gun body is made of the gun rack 11 being fixedly connected with gun barrel 1；Gun barrel 1
Interior to be equipped with cylindrical bore 38, the front end of gun barrel 1 is fixed with thread head 5 through neck tube 4, and 4 side wall of neck tube is provided with an observation window 13,
13 side of observation window is labeled with injection dosage scale 14,5 three center overlapping of axles of bore 38, neck tube 4 and thread head；Gun body is used for
Placement or support other component, and have convenient for hand-held characteristic.
Wherein, referring to Fig. 3, shown in 4,7,11,13, the striker assembly is by hammer body 27, elastic string 23 and push type report
Alert device 15 is constituted；Hammer body 27 is limited in bore 38 and is only axially movable, and hammer body 27 is fixedly arranged at the front end with tup 26, tup 26
Outer diameter be less than 27 outer diameter of hammer body, the front end of tup 26 be provided with one be in blind hole shape shock seat 24, hit seat 24 front end be provided with
One locking hole 25 for piercing side wall, the downside of hammer body 27 are equipped with towing mechanism 42, which is used to pull with circulation
Component 16 cooperates；Hammer body 27, tup 26, the center overlapping of axles for hitting seat 24 and bore 38 4；Elastic string 23 is equipped with two,
For providing the driving force resetted forward for tup 26；Elastic string 23 and push type alarm 15 are placed in gun body, work as hammer
Body 27 is moved rearwardly into when loading state, and push type alarm 15 will be issued and be alarmed, and two elastic strings 23 are in tensional state and have
Flexible potential energy；After hammer body 27 excites, it will be driven by two elastic strings 23 and quickly be moved forward, and hit 24 pairs of front side members of seat and generate
It hits.
Wherein, shown in referring to Fig. 3, the circulation pulls component 16 and is placed in gun body, only can one-way circulation operating,
It can drive the hammer body 27 in striker assembly to move backward in bore 38, then be excited, made during cycle operation
Striker assembly is recycled with this, and generating to front side member gradually is hit, and is thus provided required for injection for terminal injecting assembly
Power.
Wherein, shown in referring to Fig. 3, the trigger component 12 is supported by gun body, taking human as external force as inputting, can be driven
Dynamic circulation pulls the operating of 16 one-way circulation of component.
Wherein, referring to shown in Fig. 2,3,4,8,11, the terminal injecting assembly includes drive rod 17, medicine-storing tube 7 and lives
Plug 39, piston 39 is located in medicine-storing tube 7 and the two is slidingly sealed cooperation；7 front end of medicine-storing tube is equipped with injection orifice, and rear end is equipped with screw thread
Set 6, thread bush 6 can combine with thread head 5 and realize terminal injecting assembly with gun body and combine connection；Drive rod 17 can be stretched
And can automatic retracted to shortest initial length, can not can not continue to shorten when drive rod 17 is in initial length, drive rod 17
Front end is fixedly connected with piston 39, and rear end is fixed with a shock portion 18, and shock portion 18 is big compared with the diameter of drive rod 17, drive rod 17
The retraction force having in a stretched state is enough that piston 39 is driven to move backward in medicine-storing tube 7；Drive rod 17 is equipped with one
With the limited bolt 37 of 39 constant distance of piston, between limited bolt 37 and shock portion 18 are still kept when drive rod 17 is in initial length
Away from limited bolt 37 is big compared with the outer diameter of tup 26, and 37 outer wall of limited bolt is equipped with position mark 36；When terminal injecting assembly and gun body group
After conjunction, drive rod 17, shock portion 18, limited bolt 37, the center overlapping of axles for hitting seat 24 4, limited bolt 37 and shock portion 18 are passed through
Neck tube 4 extends back；Shock portion 18 can protrude into the bottom shock for hitting in seat 24 and being knocked seat 24, before then driving piston 39
It moves and realizes injection；The corresponding relationship of position mark 36 and injection dosage scale 14 can reflect shock portion under 17 initial length of drive rod
18 axial position, and then clearly preset injection dosage.
Wherein, referring to Fig. 3, shown in 4,5,9,11,12,13,15, it is described take medicine locked component 3 include first sliding groove 21,
Guide rail 22 and sliding block 19, first sliding groove 21 axially extend on gun barrel 1 and pierce the side wall of gun barrel 1, and guide rail 22 is fixed on rifle
Pipe 1 is outer and parallel with first sliding groove 21, and sliding block 19 is limited by first sliding groove 21 with guide rail 22 and can be only moved forward and backward；On sliding block 19
It is fixed with the adjustable locking pin 20 of axial position；20 inner end of locking pin can be protruded into through locking hole 25 hits in seat 24 and will hit portion
18 are locked in shock seat 24, and thus sliding block 19, shock portion 18 can be moved backward with tup 26；20 inner end of locking pin is from bore 38
After removal, obstacle is not constituted to the operation of striker assembly and terminal injecting assembly.
Wherein, referring to shown in Fig. 4,6,10,12,13,15, the medicine taking amount assignment component 2 includes second sliding slot 31, spiral shell
Bar 30, adjusting nut 32 and travelling arm 33, second sliding slot 31 axially extend on gun barrel 1 and pierce the side wall of gun barrel 1, screw rod
30 are fixed on that gun barrel 1 is outer and parallel with second sliding slot 31, and adjusting nut 32 and screw rod 30 are threadedly engaged and then pass through and rotate and can produce
Raw axial displacement, travelling arm 33 are driven by adjusting nut 32 and can and can be only moved forward and backward along second sliding slot 31；Travelling arm 33
Inner end passes through second sliding slot 31 and enters in bore 38, and is fixedly connected with the block arc 34 being located in bore 38, the arc
The center overlapping of axles of 26 the two of shape block 34 and tup；The internal diameter of block arc 34 is greater than the outer diameter of tup 26, and 27 side of hammer body
Wall is provided with the recessing groove 28 for preventing that block arc 34 is hindered to be moved forward and backward, and thus block arc 34 and striker assembly be not between each other
The interruption of service can be constituted；The internal diameter of block arc 34 be less than limited bolt 37 outer diameter, limited bolt 37 with its support after can not continue
It moves backward, thus block arc 34 can limit the terminal location of limited bolt 37；It is carved equipped with medicine taking amount the side of second sliding slot 31
The corresponding relationship of degree 35, adjusting nut 32 and medicine taking amount scale 35 can reflect 34 axial position of block arc, and then whereby can be pre-
If medicine taking amount.
Wherein, referring to shown in Fig. 1,2,9 component of conduit includes a Capsule 8, one conduit 9 of bottom of Capsule 8 with
Syringe needle 10 is connected, and salable be nested with of Capsule 8 is connected to injection orifice only with syringe needle 10 in 7 front end of medicine-storing tube.
As shown in Figure 1, 2, 3, in the above-mentioned large dosage of needleless injector that can independently take medicine, the specific structure of gun rack 11
And the matching relationship with gun barrel 1, the matching relationship of 15 three of hammer body 27, elastic string 23 and push type alarm, elastic string 23 are pressed
The matching relationship of pressure type alarm 15 and gun body, circulation pull the specific structure of component 16, trigger component 12, and circulation pulls component
16, trigger component 12, hammer body 27 and gun body respectively between matching relationship, it is special in the invention application No. is 2016109677793
In a kind of needleless injector disclosed in benefit, has description in detail, be considered as the prior art, so there is no need to repeat.
Referring to shown in Fig. 2,4,8,11, in the above-mentioned large dosage of needleless injector that can independently take medicine, hammer body 27 is limited
It is scheduled in bore 38, therefore the stroke foremost position of hammer body 27 is fixed and invariable, when hammer body 27 reaches the front end of its stroke
When, it can not continue to move forward and can not continue that shock portion 18 is implemented to hit, then complete entire injection, i.e. per injection is complete
Final position at rear shock portion 18 is clear and invariable；After terminal injecting assembly is combined with gun body, before the injection, drive
The shock portion 18 of 17 rear end of lever not will receive tractive force backward, therefore drive rod 17 keeps initial length, shock portion 18, limit
Bolt 37 and piston 39 keep relatively fixed, pass through the injection dosage scale at the position mark 36 and observation window 13 on limited bolt 37
Cooperation between 14 is able to reflect the relative axial position in shock portion 18 and gun barrel 1 when injecting initial, i.e., clearly hits before injection
The initial point position in portion 18；From this point of view, before the injection, can be reflected by position mark 36 and the cooperation of injection dosage scale 14
The displacement that shock portion 18 can generate in next injection process, the i.e. producible displacement of piston 39, based on above-mentioned
Relationship is calculated quantization when designing injection dosage scale 14, the corresponding injection dosage scale of position mark 36 when making default
14 numerical value is exactly injection dosage and is easily achieved.
Referring to shown in Fig. 4,8,16, in the above-mentioned large dosage of needleless injector that can independently take medicine, before taking medicine to operate,
Hammer body 27 is located at the front end of its stroke, and after terminal injecting assembly is combined with gun body, shock portion 18 is taken medicine locked component 3 and hit
Seat 24 is hit to be attached, axial position locating for the portion of shock at this time 18 is specific, simultaneously because hit seat 24 be also not affected by
Tractive force afterwards, drive rod 17 is in initial length, therefore the axial position of limited bolt 37 is also explicitly, i.e., to take medicine to operate every time
In, the initial point position of limited bolt 37 is clear and constant；In medicine taking amount assignment component 2, adjusting nut 32, travelling arm 33 and
The axial position of block arc 34 is relatively fixed always, can be reflected by adjusting nut 32 and the corresponding relationship of medicine taking amount scale 35
The axial position of block arc 34, due in taking medicine operating process, limited bolt 37 with the retraction of drive rod 17 and gradually to
After move, can not continue to move back after it is supported with block arc 34, that is, complete and entirely medicine is taken to operate, i.e., by adjust spiral shell
Mother 32 can be reflected with the corresponding relationship of medicine taking amount scale 35 take medicine every time after the completion of limited bolt 37 final position；From this point of view,
It can be reflected by the corresponding relationship of adjusting nut 32 and medicine taking amount scale 35 and next take limited bolt 37 in medicine operating process
The displacement that generated displacement, i.e. piston 39 generate is based on above-mentioned relation, is calculated when designing medicine taking amount scale 35
Quantization, the numerical value of the corresponding medicine taking amount scale 35 of adjusting nut 32 is exactly the medicine taking amount of terminal injecting assembly acquisition when making default
It is easily achieved.
Referring to shown in Fig. 4,13,14, in the above-mentioned large dosage of needleless injector that can independently take medicine, hammer body 27 is compared with tup
26 outer diameters are big, are on the one hand intended to, so that hammer body 27 is easier to realize with being slidably matched for bore 38, are on the other hand intended to, have
Conducive to the volume for improving hammer body 27, its quality is promoted indirectly, guaranteeing that hammer body 27 and tup 26 are enough to drive by inertia can be autonomous
Large dosage of needleless injector of medicine is taken to complete each micro-injection.
Working principle when large dosage of needleless injector of medicine originally can independently be taken to inject are as follows:
Referring to Fig. 3, it shown in 4,11,12, combines the terminal injecting assembly for being stored with medicament in gun body, passes through observation window
13 to observe the numerical value corresponding with injection dosage scale 14 of position mark 36, and is carried out by way of rotating terminal injecting assembly
It adjusts, thus completes the default of injection dosage；Terminal injecting assembly front end is supported in patient body-surface, is driven using trigger component 12
Dynamic circulation pulls 16 circular flow of component, and circulation dragging component 16 drags hammer body 27 first and moves backward, reaches to striker assembly
When state of loading, push type alarm 15 issues alarm, and operator becomes clear, and circulation pulls will promote when component 16 continues to run
Excite striker assembly, after striker assembly excitation excitation, hammer body 27 is driven by two elastic strings 23 and quickly moved forward, and finally hits seat
24 bottom implements to hit to shock portion 18, and piston 39, which is pushed, to move forward and terminal injecting assembly is made to complete a micro-injection,
Circulation pulls 16 cycle operation of component, and then terminal injecting assembly is made efficiently to carry out multiple micro-injection, until striker assembly
It can not continue that piston 39 is driven to move forward, so far complete the drug injection of preset dose.
Working principle when originally large dosage of needleless injector of medicine can independently be taken to take medicine are as follows:
Referring to shown in Fig. 2,3,11,13,14,15,16, by the combination of terminal injecting assembly in gun body, and pass through rotation eventually
End injecting assembly adjusts its position, it is ensured that the shock portion 18 of 17 tail end of drive rod protrudes into the bottom hit in seat 24 and with shock seat 24
Portion supports, and adjusts the position of locking pin 20, protrudes into the inner end of locking pin 20 in bore 38 and is inserted into locking hole 25 and will hit
It hits portion 18 and is locked in and hit in seat 24, thus shock portion 18 realizes with shock seat 24 and is fixedly connected；Rotating adjusting nut 32 makes
It drives block arc 34 that axial displacement occurs, and is completed by observation adjusting nut 32 and the corresponding relationship of medicine taking amount scale 35
Medicine taking amount is default；Capsule 8 in 9 component of conduit is buckled in the front end of medicine-storing tube 7, syringe needle 10 is put into the medicament for filling medical fluid
In container, thus 9 component of conduit is that terminal injecting assembly and medicine container establish a medical fluid transfer passage；Utilize trigger group
The driving circulation of part 12 pulls component 16 and runs, and circulation pulls component 16 and moves backward hammer body 27 is dragged, while shock portion 18, sliding
Block 19 is synchronized with tup 26 and is moved backward, and can generate negative pressure in medicine-storing tube 7 at this time, and the medical fluid in medicine container is through 9 groups of conduit
Part enters in medicine-storing tube 7, but due to the negative pressure in medicine-storing tube 7 cannot timely removal, as shock portion 18 moves backward, driving
Bar 17 will be stretched, and stop the operation to trigger component 12 after striker assembly reaches the state of loading, the portion 18 of shock at this time is with hammer
First 26 are locked in constant position, and drive rod 17 leans on the retraction force itself having to implement steady and sustained traction to piston 39
Power, medical fluid in medicine container is gentle to be entered in medicine-storing tube 7, is moved rearwardly into limited bolt 37 and is supported with block arc 34
Afterwards, piston 39 can not continue to move backward, and the medical fluid in terminal injecting assembly has had reached preset medicine taking amount this moment, adjust lock
The position of tight pin 20 releases the locking to shock portion 18, shock portion 18 and hits seat 24 and is detached from, and 17 automatic retracted of drive rod is extremely
Initial length removes 9 component of conduit, that is, completes and entirely medicine is taken to operate.
In the large dosage of needleless injector that originally can independently take medicine, since circulation dragging group can be driven using trigger component 12
The work of 16 one-way circulation of part, and then the state of loading that reaches for driving striker assembly reciprocal then excites, and keeps terminal injecting assembly fast
The prompt multiple micro-injection of carry out, by the purpose that is cumulative and realizing drug bolus infusion of multiple micro-injection.
Have in the large dosage of needleless injector that originally can independently take medicine, and take medicine locked component 3 by adding from
Master takes medicine function, has medicine taking amount preset function and adding medicine taking amount assignment component 2, thus after simple operations are arranged
It can carry out taking medicine, and medicine taking amount can flexibly be preset, easy to operate, save trouble and labor；In the mistake for the operation for injecting and taking medicine
Cheng Zhong is that component 16 and striker assembly offer power are pulled by trigger component 12, circulation, and element usage is high, overall cost
It is low；During taking medicine, piston 39 mainly by the retraction power drive of drive rod 17, the tractive force that piston 39 is subject to is lasting, it is stable,
Gently, will not structure to terminal injecting assembly and performance constitute and destroy；Medicine is taken without additional when due to taking medicine to operate
Auxiliary device reduces acquisition cost, improves the portable performance of needleless injector.
Furthermore, it referring to shown in Fig. 4,7,11,13, in the large dosage of needleless injector that originally can independently take medicine, hammers into shape
Body 27 is limited in bore 38 and is only axially movable, which has numerous embodiments, such as in the upside of bore 38
Wall is provided with an axially extending guide groove 45, and the upside of hammer body 27 is equipped with the guiding rib 29 being in sliding fit with the sliding chute, on the one hand
Guide groove 45 and guiding rib 29 cooperate, and are axially movable hammer body 27 only in bore 38 without relatively rotating, another
Aspect, guide groove 45 and guiding rib 29 cooperate, and hammer body 27 is limited in preset stroke.
Furthermore, referring to shown in Fig. 4,8,11,12, in the large dosage of needleless injector that originally can independently take medicine, it is
Ensure its can safety and stability completion injection work, the gun body, striker assembly and terminal injecting assembly should have as follows
Relationship:
1. when the drug in terminal injecting assembly is in specified maximum reserves and hammer body 27 is in its stroke front end, spiral shell
Line set 6 can be combined in the case where shock portion 18 does not support and hits 24 bottom of seat with thread head 5 and connect, and guarantee that terminal is infused
Component and gun body firm combination are penetrated, thus one, it is ensured that terminal injecting assembly can be combined in specified maximum reserves with gun body,
And any adjusting of injection dosage can be carried out, while also assuring that terminal injecting assembly can be not in the state of loading in striker assembly
When combined with gun body, improve the portable performance that originally can independently take large dosage of needleless injector of medicine.
2. when to reaching with thread head 5, minimum distance, medical fluid is emptied completely and hammer body 27 rotation of thread bush 6 in medicine-storing tube 7
When in its stroke front end, shock portion 18 is supported with shock 24 bottom of seat just；Even if striker assembly works on, seat is hit
24 can not also drive shock portion 18 to move forward；Thus one, it on the one hand ensure that the large dosage of needleless injector that originally can independently take medicine
When work, the drug in medicine-storing tube 7 can be completely injected, and on the other hand then ensure that the drug injection in medicine-storing tube 7 finishes
Afterwards, even if striker assembly works on, the impact force generated will not damage terminal injecting assembly.
Furthermore, referring to shown in Fig. 4,13,14,16, in the large dosage of needleless injector that originally can independently take medicine, it is
Ensure its can efficient and convenient completion take medicine to work, the striker assembly, terminal injecting assembly, take medicine locked component 3 and
Medicine taking amount assignment component 2 should have following relationship:
1. when hammer body 27 and when the sliding block 19 in medicine locked component 3 being taken to be respectively positioned on the front end of respective stroke, locking pin 20
Locking hole 25 efficiently can be inserted into 20 inner end of locking pin thus when carrying out taking medicine with both locking hole 25 center overlapping of axles
In, and then shock portion 18 is locked in and is hit in seat 24；After being inserted into locking hole 25 such as locking pin 20, sliding block 19 can be with tup 26
Movement is until hammer body 27 reaches its stroke rearmost end.
2. when hammer body 27, adjusting nut 32 be respectively positioned on respective stroke front end and shock portion 18 be locked in hit seat 24 in
When, if drive rod 17 is in initial length, then limited bolt 37 is supported with block arc 34；When adjusting nut 32 is located at its stroke most
When rear end, if limited bolt 37 and block arc 34 are supported, then the pharmaceutical quantities in medicine-storing tube 7 reach specified maximum reserves；Thus one
Come, medicine taking amount assignment component 2 can meet zero to the default of any medicine taking amount between the specified maximum reserves of medicine-storing tube 7, simultaneously also
It can avoid piston 39 excessively to move back and the dose in medicine-storing tube 7 is made to be more than specified maximum reserves.
3. when shock portion 18 move back to striker assembly with tup 26 reach load state after, drive rod 17 is always in stretching
And it is not completely stretched state, and thus one, drive rod 17 is that tractive force provided by piston 39 can meet the dynamic of any medicine taking amount
Force request.
Furthermore, it referring to shown in Fig. 9,13,14,15, in the large dosage of needleless injector that originally can independently take medicine, locks
Tight pin 20 is supported by sliding block 19, and 20 inner end of locking pin can be protruded into through locking hole 25 hits in seat 24 and be locked in shock portion 18 and hit
It hits in seat 24, and 20 inner end of locking pin is not constituted the operation of striker assembly and terminal injecting assembly after the removal of bore 38
Obstacle；Based on this technical purpose, the fit form of locking pin 20 and sliding block 19 has various structures, can such as be provided on sliding block 19
One axis hole, axis hole intersect with the central axis for hitting both seats 24, and axis hole is parallel with the central axis of both locking holes 25, locking
Pin 20 is supported and is axially movable by axis hole, and the diameter of locking pin 20 is less than the internal diameter of locking hole 25, and the outer end of locking pin 20 is set
Pelmatozoa 40, thus one, technical purpose above-mentioned can be realized.
Meanwhile as shown in figure 15, it originally can independently take large dosage of needleless injector of medicine during injecting and taking medicine, lock
Tight pin 20 must be adjusted to and maintain corresponding axial position, can ensure that injects and take medicine to operate goes on smoothly, therefore lock
Tight pin 20 should have certain lock function, after artificially being adjusted to its position, be able to maintain that in the position and cannot be automatic
It is mobile, for this purpose, the damping cushion rubber A41 for applying resistance to locking pin 20 is fixed in the axis hole, locking pin 20 and resistance
Buddhist nun's cushion rubber A41 cooperation and can not automatic axial it is mobile.
Furthermore, referring to shown in Fig. 4,8,13, in the large dosage of needleless injector that originally can independently take medicine, drive rod
17 have dual function be initial length in injection process, can not continue to shorten, thus shock portion 18 can be subject to
Impact force passes to piston 39 and promotes terminal injecting assembly implementing injection；It during taking medicine, is first stretched, by percussion hammer group
Part is stored as the potential energy of itself to the tractive force that it is generated, and the retraction force then having in a stretched state by it is to piston
39 implement stable, gentle traction, and realization takes medicine；Based on this technical purpose, drive rod 17 is relatively easy to reality using the prior art
It is existing.But meanwhile it originally can independently take large dosage of needleless injector of medicine to the also other technical requirements of drive rod 17, such as drive rod
17 initial length is unsuitable too long, so as to originally can independently take the structure of large dosage of needleless injector of medicine more compact；And due to
During entirely taking medicine, shock portion 18 need to be moved backward with tup 26 until striker assembly reaches the state of loading, shock portion 18
The displacement of generation is larger, i.e., drive rod 17 should have biggish telescopic extensions again；And in order to guarantee that drive rod 17 is stretching shape
Gentle to the tractive force of the application of piston 39, stable under state, retraction force should tend to be balanced；Preferably to reach above-mentioned technology effect
Fruit, in the present invention, drive rod 17 is using such as flowering structure:
Referring to shown in Fig. 8,13,14,17, drive rod 17 is made of front bar 48, rear bar 50 and elastic component 49, and front bar 48 is with after
The outer diameter of bar 50 is equal；The front end of front bar 48 is fixedly connected with piston 39, and rear end is provided with the grafting chamber 46 of blind hole shape, and middle and back is solid
Surely have and be overlapped with central shaft and the limited bolt 37 big compared with its diameter；The rear end of rear bar 50 be connected be overlapped with central shaft and compared with
The big shock portion 18 of its diameter, is fixedly arranged at the front end with the core bar 51 being overlapped with central shaft, and core bar 51 is inserted into the grafting chamber of front bar 48
In 46 and the two axial sliding fit, the front end of core bar 51 are provided with the containing cavities 47 of blind hole shape backward；Elastic component 49 uses rubber
Rope or tension spring, front end are fixedly connected with 46 bottom of grafting chamber, and rear end is fixedly connected with 47 bottom of containing cavities, at drive rod 17
When initial length, that is, front bar 48 and rear bar 50 are supported, elastic component 49 is still in tensional state.Drive rod 17 is using the above structure
Afterwards, can be stretched and can automatic retracted to initial length, and its initial length will not be too long, but has biggish telescopic extensions,
Simultaneously because elastic component 49 is located in grafting chamber 46 and containing cavities 47, it ensure that elastic component 49 has biggish length, it is ensured that drive
The retraction force equalization stable that lever 17 has in a stretched state.
Furthermore, it referring to shown in Figure 10,13,14, in the large dosage of needleless injector that originally can independently take medicine, adjusts
Nut 32 is threadedly engaged with screw rod 30, can produce axial displacement by rotation, and then travelling arm 33 can be driven sliding along second
Slot 31 is moved forward and backward, and plays the purpose of adjustment 34 axial position of block arc, the cooperation of adjusting nut 32 and travelling arm 33 indirectly
Structure can be realized using the prior art, sliding such as the axle bed 43 being overlapped with central shaft that is fixedly arranged at the front end with of adjusting nut 32
The outer end of swing arm 33 is equipped with and one is nested with the axle sleeve 44 on axle bed 43, the axle sleeve 44 and axle bed 43 can relative rotation, but can not axis
To relative movement.
Furthermore, referring to shown in Figure 13,14,16, in the large dosage of needleless injector that originally can independently take medicine, second
The side of sliding slot 31 is equipped with medicine taking amount scale 35, and adjusting nut 32 and the corresponding relationship of medicine taking amount scale 35 can reflect block arc
34 axial positions, and then medicine taking amount can be preset before taking medicine operation, it realizes the mechanism that this function is based on, has in front
Detailed discussion.But since the internal diameter of medicine-storing tube 7 is larger, the lesser axial displacement of piston 39 can make medicine taking amount generate biggish change
Change, therefore, it is default such as only to carry out medicine taking amount by the corresponding relationship of adjusting nut 32 and medicine taking amount scale 35, the precision that is bound to compared with
It is low, and error is larger, for this purpose, the present invention also has following improvement:
Furthermore, show referring to Figure 18, the front end outer wall of the adjusting nut 32 is equipped be distributed along its outer circle two
Secondary scale 52, medicine taking amount assignment component is equipped with the pointer 53 that a position is fixed and is used to cooperate with secondary scale 52, such as pointer
52 can be labeled on axle sleeve 44, and adjusting nut 32 rotates a circle along screw rod 30, and the axial displacement generated is medicine taking amount scale
35 scale unit can carry out medicine taking amount by adjusting nut 32 and medicine taking amount scale 35 rough thus before taking medicine
It is default, the cooperation of secondary scale 52 and pointer 53 is then recycled, medicine taking amount is finely preset.
Furthermore, referring to shown in Figure 16, in taking medicine operating process, when the medical fluid in terminal injecting assembly has reached
Preset medicine taking amount adjusts the position of locking pin 20 to release the locking to shock portion 18, since drive rod 17 is still in drawing
State is stretched, such as rear bar 50 moves forward too fast in retraction process, certain shock will certainly be generated to front bar 48, and make piston
39 generate micro Forward, on the one hand will affect the accuracy of the final medicine taking amount of terminal injecting assembly, are on the other hand also easy to cause
Medical fluid oozes out from injection orifice and causes drug waste, to prevent the hair of above situation from occurring, knot of the present invention to drive rod 17
Structure also has following improvement:
I.e. referring to a damping cushion rubber B54 shown in Figure 19, is fixed in the grafting chamber 46 of the front bar 48, cushion rubber is damped
B54 can generate resistance to the axial movement of core bar 51, guarantee in 17 retraction process of drive rod, and rear bar 50 and core bar 51 are slow forward
It is mobile, to reduce the shock generated to front bar 48.
Claims (5)
1. large dosage of needleless injector that one kind can independently take medicine, characterized in that it comprises:
Gun body is made of the gun rack and gun barrel being fixedly connected；Cylindrical bore is equipped in gun barrel, the front end of gun barrel is through neck tube
It is fixed with thread head, neck tube side wall is equipped with an observation window for being labeled with injection dosage scale, and bore, neck tube and thread head three are same
Axis；
Striker assembly is made of hammer body, elastic string and push type alarm；Hammer body is limited in bore and only can axially move
Dynamic, the front end of hammer body is equipped with a tup small compared with its outer diameter, and the front end of tup is provided with the shock seat in blind hole shape, hits seat front end
Side wall on be provided with a locking hole, the downside of hammer body is equipped with towing mechanism；Hammer body, tup and shock seat are coaxial with bore；Bullet
Property rope be equipped with two, elastic string and push type alarm are placed in gun body, when hammer body, which is moved rearwardly into, loads state, pressing
Formula alarm issues alarm, and two elastic strings are in tensional state；After hammer body excitation, it will be driven by two elastic strings and quickly be moved forward,
It hits seat and shock is generated to front side member；
Circulation pulls component, be placed in gun body and only can one-way circulation operating, during cycle operation, can drive and hit
The reciprocal state of loading that reaches of hammer component is then excited, and recycles striker assembly with this, and producing to front side member gradually
It is raw to hit；
Trigger component is supported by gun body, taking human as external force as inputting, circulation can be driven to pull component one-way circulation fortune
Turn；
Terminal injecting assembly comprising drive rod and the medicine-storing tube and piston for being slidingly sealed cooperation；Medicine-storing tube front end is equipped with note
Perforation, rear end are equipped with thread bush；Drive rod can be stretched and can automatic retracted to shortest initial length, front end and piston are solid
Fixed connection, rear end are equipped with the shock portion big compared with driving shank diameter, and the retraction force that drive rod has in a stretched state is enough to drive
Piston moves backward in medicine-storing tube；Drive rod is equipped with one and constant and big compared with the tup outer diameter limited bolt of plunger distance,
Limited bolt outer wall is equipped with position mark；After terminal injecting assembly is combined with gun body, drive rod, shock portion and limited bolt with hit
It hits coaxial seat and limited bolt and shock portion extends back through neck tube；Shock portion, which can protrude into, to be hit in seat and is knocked the bottom of seat and hit
It hits, piston Forward is then driven to realize injection；The corresponding relationship of position mark and injection dosage scale can reflect the axis in shock portion
To position, and then clearly preset injection dosage；
Take medicine locked component comprising the first sliding groove that opens up on gun barrel along axial direction, be fixed on outside gun barrel and and first sliding groove
It is adjustable to be fixed with axial position on sliding block for parallel guide rail, the sliding block that is limited by first sliding groove and guide rail and can be only moved forward and backward
Locking pin；Locking pin inner end can be protruded into through locking hole hit seat in and by shock portion be locked in hit seat in, thus sliding block, hit
The portion of hitting can be moved back with tup；Locking pin inner end is after bore removal, not to the operation structure of striker assembly and terminal injecting assembly
At obstacle；
Medicine taking amount assignment component comprising the second sliding slot that opens up on gun barrel along axial direction, be fixed on outside gun barrel and with it is second sliding
The parallel screw rod of slot, the cunning that can be only moved forward and backward along second sliding slot with the adjusting nut of screw rod cooperation, by adjusting nut driving
Swing arm；The inner end of travelling arm is fixedly connected with the block arc being located in bore, and block arc is coaxial with tup；In block arc
Diameter is greater than the outer diameter of tup, and hammer body side wall is provided with the recessing groove for preventing that block arc is hindered to be moved forward and backward, thus block arc
The interruption of service will not be constituted between each other with striker assembly；Block arc internal diameter is less than the outer diameter of limited bolt, and limited bolt is supported with it
It can not continue to move backward behind top；The side of second sliding slot is equipped with medicine taking amount scale, and adjusting nut is corresponding with medicine taking amount scale
Relationship can reflect block arc axial position；
Conduit tube component comprising one conduit of bottom of a Capsule, Capsule is connected with syringe needle, and Capsule is salable to be nested in drug storage
Cylinder front end and be connected to injection orifice only with syringe needle.
2. large dosage of needleless injector that one kind according to claim 1 can independently take medicine, it is characterised in that: the bore
Upper side wall be provided with an axially extending guide groove, and the upside of hammer body is equipped with the guiding rib being in sliding fit with the sliding chute, on the one hand
Guide groove and guiding rib cooperate, and are axially movable hammer body only in bore without relatively rotating, on the other hand, guiding
Slot and guiding rib cooperate, and hammer body is limited in preset stroke.
3. large dosage of needleless injector that one kind according to claim 1 can independently take medicine, it is characterised in that: the rifle
Body, striker assembly and terminal injecting assembly should have following relationship:
A. when the drug in terminal injecting assembly is in specified maximum reserves and hammer body is in its stroke front end, thread bush with
Thread head can be combined connection in the case where shock portion does not support and hits seat bottom, and guarantee terminal injecting assembly and gun body
Firm combination；
B. when thread bush is rotated, to reaching with thread head, minimum distance, medical fluid is emptied completely in medicine-storing tube and hammer body is in its stroke
When front end, shock portion is supported with shock seat bottom just.
4. large dosage of needleless injector that one kind according to claim 1 can independently take medicine, it is characterised in that: described hits
Hammer component, terminal injecting assembly take medicine locked component and medicine taking amount assignment component that should have following relationship:
A. when hammer body and when the sliding block in medicine locked component being taken to be respectively positioned on the front end of respective stroke, both locking pin and locking hole
Center overlapping of axles；After in locking pin insertion locking hole, sliding block can be with moving hammer until hammer body reaches its stroke rearmost end；
B. when hammer body, adjusting nut are respectively positioned on respective stroke front end and shock portion is locked in when hitting in seat, at drive rod
In initial length, then limited bolt is supported with block arc；When adjusting nut is located at its stroke rearmost end, such as limited bolt and arc
Block is supported, then the pharmaceutical quantities in medicine-storing tube reach specified maximum reserves；
C. it moves back with tup to striker assembly and reaches after load state when shock portion, drive rod is in stretching always and does not draw completely
Stretch state.
5. large dosage of needleless injector that one kind according to claim 1 can independently take medicine, it is characterised in that: adjusting nut
Be fixedly arranged at the front end with an axle bed being overlapped with central shaft, the outer end of travelling arm is equipped with one and is nested with the axle sleeve on axle bed, the axis
Set and axle bed can relative rotation, but can not axially opposing movement.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064022.8A CN106823072B (en) | 2017-02-04 | 2017-02-04 | Large dosage of needleless injector of medicine can independently be taken |
| CN201910383171.XA CN109966593B (en) | 2017-02-04 | 2017-02-04 | Needleless injector capable of automatically taking medicine |
| CN201910383166.9A CN109966592A (en) | 2017-02-04 | 2017-02-04 | A kind of large dosage of needleless injector that can independently take medicine |
| CN201910383164.XA CN109966591B (en) | 2017-02-04 | 2017-02-04 | Large-dose needleless injector capable of automatically taking medicine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064022.8A CN106823072B (en) | 2017-02-04 | 2017-02-04 | Large dosage of needleless injector of medicine can independently be taken |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910383164.XA Division CN109966591B (en) | 2017-02-04 | 2017-02-04 | Large-dose needleless injector capable of automatically taking medicine |
| CN201910383166.9A Division CN109966592A (en) | 2017-02-04 | 2017-02-04 | A kind of large dosage of needleless injector that can independently take medicine |
| CN201910383171.XA Division CN109966593B (en) | 2017-02-04 | 2017-02-04 | Needleless injector capable of automatically taking medicine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106823072A CN106823072A (en) | 2017-06-13 |
| CN106823072B true CN106823072B (en) | 2019-10-25 |
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| CN201910383171.XA Active CN109966593B (en) | 2017-02-04 | 2017-02-04 | Needleless injector capable of automatically taking medicine |
| CN201910383164.XA Active CN109966591B (en) | 2017-02-04 | 2017-02-04 | Large-dose needleless injector capable of automatically taking medicine |
| CN201710064022.8A Expired - Fee Related CN106823072B (en) | 2017-02-04 | 2017-02-04 | Large dosage of needleless injector of medicine can independently be taken |
| CN201910383166.9A Withdrawn CN109966592A (en) | 2017-02-04 | 2017-02-04 | A kind of large dosage of needleless injector that can independently take medicine |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910383171.XA Active CN109966593B (en) | 2017-02-04 | 2017-02-04 | Needleless injector capable of automatically taking medicine |
| CN201910383164.XA Active CN109966591B (en) | 2017-02-04 | 2017-02-04 | Large-dose needleless injector capable of automatically taking medicine |
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| CN201910383166.9A Withdrawn CN109966592A (en) | 2017-02-04 | 2017-02-04 | A kind of large dosage of needleless injector that can independently take medicine |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107822898B (en) * | 2017-11-24 | 2024-02-20 | 宁波大学 | Power assisting device of nasal feeding device |
| CN108853648B (en) * | 2018-08-10 | 2023-11-21 | 北京快舒尔医疗技术有限公司 | Needleless injector locking mechanism and needleless injector |
| CN110694142A (en) * | 2019-10-24 | 2020-01-17 | 艾诺克医美科技(珠海)有限公司 | User-customized subcutaneous electronic injection system and injection customization method |
| CN115038480A (en) * | 2019-11-14 | 2022-09-09 | 和谐医疗解决方案有限责任公司 | Variable dose syringe |
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- 2017-02-04 CN CN201910383164.XA patent/CN109966591B/en active Active
- 2017-02-04 CN CN201710064022.8A patent/CN106823072B/en not_active Expired - Fee Related
- 2017-02-04 CN CN201910383166.9A patent/CN109966592A/en not_active Withdrawn
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109966593A (en) | 2019-07-05 |
| CN109966592A (en) | 2019-07-05 |
| CN106823072A (en) | 2017-06-13 |
| CN109966591B (en) | 2021-06-22 |
| CN109966593B (en) | 2021-07-20 |
| CN109966591A (en) | 2019-07-05 |
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