CN109908434A - A kind of replaceable drug is prefilled with automatic injector and its working method - Google Patents
A kind of replaceable drug is prefilled with automatic injector and its working method Download PDFInfo
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- CN109908434A CN109908434A CN201910359784.XA CN201910359784A CN109908434A CN 109908434 A CN109908434 A CN 109908434A CN 201910359784 A CN201910359784 A CN 201910359784A CN 109908434 A CN109908434 A CN 109908434A
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- Prior art keywords
- spring
- injection
- drug
- prefilled
- shell
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- 239000003814 drug Substances 0.000 title claims abstract description 70
- 229940079593 drug Drugs 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 73
- 238000002347 injection Methods 0.000 claims abstract description 73
- 238000009527 percussion Methods 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000003491 array Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229960001866 silicon dioxide Drugs 0.000 claims description 5
- 206010033675 panniculitis Diseases 0.000 claims description 4
- 210000004304 subcutaneous tissue Anatomy 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 210000001015 abdomen Anatomy 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000008058 pain sensation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
What the present invention disclosed a kind of replaceable drug is prefilled with automatic injector and its working method, include safety device, percussion lock and drug storage device, it includes injection rod shells, injection rod, injection spring groove (2), one end of the spring wraping plate is fixedly connected with extruding spring, and the other end for squeezing spring is fixed on groove, spring wraping plate, the injection rod interior of shell is equipped with annular lug, there are two being set on the outside of the injection rod in opposite protrusion (2), the injection rod spring pocket is on the injection rod, the injection rod low side is equipped with downwardly convex push rod；Drug storage device is equipped with piston in the cylindrantherae it includes cylindrantherae, cylindrantherae bottom connecting needle, and the syringe needle is replaceable；The percussion lock lower end is to be threadedly coupled with the drug storage device, and the safety device is snapped connection with the percussion lock upper end.
Description
Technical field
The present invention relates to field of medical technology, and in particular to a kind of replaceable drug is prefilled with automatic injector and its work
Make method.
Background technique
The composed structure of common injector for medical purpose currently on the market, the injection tube comprising storing drug, injection tube one end
Inside is equipped with injection putter, and the injection tube other end is equipped with syringe needle, pinhead sleeve protective sleeve of syringe needle.Such syringe when in use,
Protective sleeve of syringe needle need to be removed, and preprepared drug is filled into injection tube, and injection needs that medical worker is asked to come
It is injected, such syringe injection non-medical staff is unable to complete, and drug needs the later period to fill to injection tube, at such syringe needle
In ambient non-sterile, in emergency circumstances, many and diverse operating process has delayed valuable time, and syringe use is very inconvenient.
Summary of the invention
Goal of the invention: present invention aims in view of the deficiencies of the prior art, provide a kind of preliminary filling of replaceable drug
Automatic injector and its working method are filled out, in case of emergency, according to preprepared different pharmaceutical, is mounted directly injection.
Technical solution: a kind of replaceable drug is prefilled with automatic injector, it is characterised in that:
One safety device, it includes a top cover, an ejection rod, a shell, the cap base is equipped with one 270 degree of fan
Shape card slot, the card fan groove are equipped with a pair of opposite groove (1), and one of groove (1) is in the end of card slot；It is described outer
It is set at the top of shell there are two opposite buckle, it is one of to be stuck in one end that fan-shaped card slot is not provided with groove (1), described outer
Shell top center is equipped with groove (1), and described ejection rod one end is placed in groove (1), and the other end of the ejection rod is set
There is annulus, the annulus raises upward for centre, and the annulus is fixed inside the housing, sets between the annulus and cover top portion
There is spring, the ejection rod passes through spring；
One percussion lock, it includes injection rod shell, injection rod, injection spring, spring wraping plate, in the injection rod shell
Portion is equipped with annular lug, is set on the injection rod outside there are two opposite convex groove (2), one end of the spring wraping plate is solid
Fixed connection squeezes spring, and the other end for squeezing spring is fixed in groove (2), and the injection rod spring pocket is in the injection
On bar, the injection rod low side is equipped with downwardly convex injection putter；
One drug storage device is equipped with piston, cylindrantherae bottom connecting needle it includes cylindrantherae in the cylindrantherae；
The percussion lock lower end is to be threadedly coupled with the drug storage device, and the safety device and the percussion fill
Upper end is set to snap connection.
Above-mentioned technical proposal is further improved, the syringe needle uses hollow microneedle arrays structure.
Further, drug storage device side is equipped with medicament form, for observing drug in drug storage device
Surplus.
Further, the drug storage device is marked using multiple color, according to the difference of color, is packed into different medicines
Object.
Further, the syringe needle is distributed on the circle that diameter is 1cm according to circular distribution 4-8 root syringe needle.
Further, the needle length is in 0.2mm-4mm.
Further, the syringe needle thickness is 27G-34G.
Further, the drug storage device is equipped with micropin protective case, and the micropin protective case and the drug store
Device snaps connection.
Further, silicagel pad is equipped in the micropin protective case.
The utility model has the advantages that compared with the prior art, the advantages of the present invention are as follows: according to the difference of situation instantly, selection is opposite
The drug storage device answered, which is directly installed in percussion lock, to be injected, and using multichannel micropin syringe needle, the wounded are in complicated ring
In border, can by one-handed performance, the positions such as abdomen, arm, thigh, buttocks quickly, it is no leakage, painless, safe and convenient
First aid medicine is injected perpendicularly into subcutaneous tissue, realization is saved oneself.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram for being prefilled with automatic injector of replaceable drug of the present invention；
Fig. 2 is the structural schematic diagram for being prefilled with automatic injector of replaceable drug of the present invention；
Fig. 3 is the structural schematic diagram of replaceable drug of the present invention being prefilled with after automatic injector injection；
Fig. 4 is the structural representation before the safety device starting for being prefilled with automatic injector of replaceable drug of the present invention
Figure；
Fig. 5 is the structural representation after the safety device starting for being prefilled with automatic injector of replaceable drug of the present invention
Figure；
Fig. 6 is the structural representation before the safety device starting for being prefilled with automatic injector of replaceable drug of the present invention
Figure；
Fig. 7 is the structural representation after the safety device starting for being prefilled with automatic injector of replaceable drug of the present invention
Figure；
Fig. 8 is the structural representation before the percussion lock starting for being prefilled with automatic injector of replaceable drug of the present invention
Figure；
Fig. 9 is the structure before the drug storage device starting for being prefilled with automatic injector of replaceable drug of the present invention
Schematic diagram；
Figure 10 is the micropin protective cover structure diagram for being prefilled with automatic injector of replaceable drug of the present invention；
Figure 11 is the microneedle array structural schematic diagram for being prefilled with automatic injector of replaceable drug of the present invention；
Figure 12 is the microneedle array superstructure schematic diagram for being prefilled with automatic injector of replaceable drug of the present invention；
Figure 13 is that replaceable drug of the present invention is prefilled with automatic injector external structure schematic diagram.
In figure: 1, safety device, 2, percussion lock, 3, drug storage device, 4, micropin protective case；
1-1, buckle, 1-2 groove, 1-3, shell, 1-4 sector card slot, 1-5, top cover, 1-6 groove, 1-7, push rod, 1-8 bullet
Spring, 1-9, annulus；
2-1 injection spring, 2-2 injection rod, 2-3, seesaw spring, 2-4 convex groove, 2-5 spring, 2-6 convex block, 2-7 note
Penetrate push rod；
3-1 piston, 3-2, cylindrantherae shell, 3-3, cylindrantherae, 3-4 microneedle array syringe needle；
4-1 micropin protective case, 4-2, silicagel pad.
Specific embodiment
Technical solution of the present invention is described in detail below by attached drawing, but protection scope of the present invention is not limited to
The embodiment.
Embodiment 1: as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13
Replaceable drug be prefilled with automatic injector, include safety device, percussion lock, drug storage device and micropin protection
Set, safety device are to snap connection with percussion lock, and percussion lock is to be threadedly coupled with drug storage device, drug storage device
It is to snap connection with micropin protective case；
Its safety device contains shell 1-3 and top cover 1-5, the shell 1-3 and top cover 1-5 using being threadedly coupled, outside
A pair of opposite buckle 1-1 is equipped at the top of shell 1-3, the lower end top cover 1-5 is equipped with 270 ° of fan-shaped card slot 1-4, fan-shaped card slot 1-4
Inside is set there are two the top that opposite groove 1-2, one of groove 1-2 are located at fan-shaped card slot 1-4, at the top of shell 1-3 in
Heart position is additionally provided with a groove 1-6, placed a push rod 1-7 in groove 1-6, and the other end connection of push rod 1-7 is provided with
One annulus 1-9, annulus 1-9 are fixed on shell 1-3 inner wall, placed a spring between annulus 1-9 and top cover 1-5
1-8, push rod 1-7 pass through spring 1-8, and push rod 1-7 is extended to inside injection rod 2-2, are equipped at injection rod 2-2 upper port to four
The panel that Zhou Pinghang extends, panel withstand on the lower end annulus 1-9, are equipped with injection spring 2-1 inside injection rod 2-2, push rod 1-7's is low
End is contacted with injection spring 2-1 without any inside injection spring 2-1, sets that there are two opposite convexes on the outside of injection rod 2-2
Spring 2-5 is respectively fixedly connected in convex groove 2-4 out, convex groove 2-4, the spring 2-5 other end is respectively fixedly connected with
The one end this seesaw spring 2-3, the fulcrum of seesaw spring 2-3 are fitted on injection rod 2-2 outer wall, are additionally provided at the top of injection rod 2-2
Downwardly projecting injection putter 2-7, shell 1-3 are upper coarse and lower fine annulus, and the lower part shell 1-3 is upper injection rod 2-2 shell
On the inside of portion, injection putter 2-7 withstands on the upper end piston 3-1, and piston 3-1 is arranged inside the upper end cylindrantherae 3-3, the lower end of cylindrantherae 3-3
Equipped with downwardly projecting liquor piping, pipeline connects hollow microneedle arrays, and micropin protective case 4-1 covers outside drug storage device
Side, and hollow microneedle arrays penetrate in the silicagel pad 4-2 in micropin protective case 4-1；
The bottom cylindrantherae 3-3 in drug storage device is equipped with syringe needle, and syringe needle uses hollow microneedle arrays structure, and needle is distributed in
One diameter is on 1cm disc, to guarantee to guarantee that medical fluid enters skin in the positions such as abdomen, arm, thigh, buttocks injection confidence
The depth desired of undertissue rather than musculature, as far as possible the mitigation pain sensation, therefore be selected between 0.2~4mm；It adopts on syringe needle top
It is to be equipped with medical fluid among plane to flow through pipeline with bottom, uses arc groove in the lower part of pipeline, reserve medical fluid parking space, needle
Head uses 27G-34G, is calculated using hydrodynamics Bernoulli equation and 0.5ml medical fluid is injected subcutaneous tissue, bullet in 4 seconds
The ideal thrust provided needed for spring:
Wherein, the unit of parameters is:
T:s；L:m；P:kg/m3；S:m2
34G syringe needle calculated result is as follows:
The calculated result of 31G syringe needle is as follows:
27G syringe needle calculated result is as follows:
In view of the friction between transmission device, the thrust that practical upper spring needs also needs precise measurement, and is guaranteeing
Redundancy is reserved under the premise of equipment safety is reliable.
After the drug storage device for installing needs；
When safety device is in locking state, one of buckle 1-1 is in the fan-shaped card slot for being not provided with the end groove 1-2
At 1-4, spring 1-8 is in compressive state at this time, is equipped with the panel to extend in parallel around, panel at injection rod 2-2 upper port
Withstand on the lower end annulus 1-9, injection spring 2-1 be equipped with inside injection rod 2-2, the low side of push rod 1-7 inside injection spring 2-1,
It contacts, sets on the outside of injection rod 2-2 there are two the opposite convex groove 2-4 outwardly protruded without any with injection spring 2-1, it is raised
Spring 2-5 is respectively fixedly connected in groove 2-4, the spring 2-5 other end is respectively fixedly connected with the one end seesaw spring 2-3, sticks up
The fulcrum of flat spring 2-3 is fitted on injection rod 2-2 outer wall, and one end of seesaw spring 2-3 connecting spring 2-5 withstands on injection shell
The internal top convex block 2-6, the seesaw spring 2-3 other end are withstood in the outwardly extending panel at the top of injection rod 2-2, injection rod
Downwardly projecting injection putter 2-7 is additionally provided at the top of 2-2, shell 1-3 is upper coarse and lower fine annulus, and the lower part shell 1-3 is being injected
The upper inner of bar 2-2 shell, injection putter 2-7 withstands on the upper end piston 3-1, and piston 3-1 is located at the top of cylindrantherae 3-3, medicine
Cylinder is arranged inside cylindrantherae shell 3-2, and hollow microneedle arrays are fixed in the silicagel pad 4-2 in micropin protective case 4-1.
When rotating clockwise shell 1-3 to 90 °, safety device is in the unlocked state, and one of buckle 1-1, which is in, to be equipped with
At the fan-shaped card slot 1-4 at the end groove 1-2, spring 1-8 drives shell 1-3 to pop up at this time, until push rod 1-7 low side to annulus
1-9 is blocked position, removes micropin protective case 4-1, and micropin one end is placed on skin surface, top cover 1-5 is pressed, is pierced into syringe needle
Skin, while shell 1-3 being driven to move downward, the lower end shell 1-3 squeezes the lower part seesaw spring 2-3, makes the lower end seesaw spring 2-3
The spring 2-5 of inside is inwardly compressed, when seesaw spring 2-3 low side leaves the convex block 2-6 of injection interior of shell, injection rod 2-2
Internal injection spring 2-1 pop-up, is pushed away using the push rod that the lower end dynamic injection rod 2-2 is pushed in pop-up and is arranged in cylindrantherae shell 3-2
The piston on the cylindrantherae top in portion, pressure piston 3-1 is moved downward, by injecting liquid drug to subcutaneous tissue.
As described above, must not be explained although the present invention has been indicated and described referring to specific preferred embodiment
For the limitation to invention itself.It without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
Various changes can be made in the form and details for it.
Claims (10)
1. a kind of replaceable drug is prefilled with automatic injector, it is characterised in that:
One safety device, it includes a top cover, an ejection rod, a shell, the cap base is equipped with one 270 ° of fan-deck card
Slot, the card fan groove are equipped with a pair of opposite groove (1), and one of groove (1) is in the end of card slot；The shell top
Portion is set there are two opposite buckle, one of to be stuck in one end that fan-shaped card slot is not provided with groove (1), on the shell top
Portion center is equipped with groove (1), and described ejection rod one end is placed in groove (1), and the other end of the ejection rod is equipped with circle
Ring, the annulus raise upward for centre, and the annulus is fixed inside the housing, and bullet is equipped between the annulus and cover top portion
Spring, the ejection rod pass through spring；
One percussion lock, it includes injection rod shell, injection rod, injection spring groove (2), one end of the spring wraping plate is fixed
Connection squeezes spring, and the other end for squeezing spring is fixed on groove, spring wraping plate, and the injection rod interior of shell is equipped with annular
Convex block, on the outside of the injection rod on set there are two in opposite protrusion (2), the injection rod spring pocket is in the injection rod
On, the injection rod low side is equipped with downwardly convex push rod；
One drug storage device is equipped with piston, cylindrantherae bottom connecting needle, the syringe needle can it includes cylindrantherae in the cylindrantherae
Replacement；
The percussion lock lower end is to be threadedly coupled with the drug storage device, on the safety device and the percussion lock
End snaps connection.
2. a kind of replaceable drug according to claim 1 is prefilled with automatic injector, which is characterized in that the syringe needle
Using hollow microneedle arrays structure.
3. a kind of replaceable drug according to claim 1 is prefilled with automatic injector, which is characterized in that the drug
Storage device side is equipped with medicament form, for observing the surplus of drug in drug storage device.
4. according to claim 1 or a kind of replaceable drug as claimed in claim 3 is prefilled with automatic injector, feature exists
In the drug storage device is packed into different drugs according to the difference of color using multiple color.
5. a kind of replaceable drug according to claim 2 is prefilled with automatic injector, which is characterized in that the syringe needle
According to circular distribution 4-8 root syringe needle, it is distributed on the circle that diameter is 1cm.
6. a kind of replaceable drug according to claim 2 or 5 is prefilled with automatic injector, which is characterized in that described
Needle length is in 0.2mm-4mm.
7. a kind of replaceable drug according to claim 2 or 5 is prefilled with automatic injector, which is characterized in that described
Syringe needle thickness is 27G-34G.
8. a kind of replaceable drug described in -7 any one is prefilled with automatic injector according to claim 1, feature exists
In the drug storage device is equipped with micropin protective case, and the micropin protective case is snapped connection with the drug storage device.
9. a kind of replaceable drug according to claim 8 is prefilled with automatic injector, which is characterized in that the micropin
Silicagel pad is equipped in protective case.
10. a kind of replaceable drug described in -9 any one is prefilled with automatic injector and its work according to claim 1
Method, which comprises the steps of:
(1) drug storage device is installed: rotating clockwise drug storage device, it is tightened with the screw thread on the inside of percussion lock；
(2) safety device: rotating clockwise shell, is moved to the buckle on fan-shaped card slot in the groove on fan-shaped card slot, pushes away
Spring pop-up on bar, drives shell to pop up outward；
(3) percussion lock: after safety device is opened, and removing micropin protective case, and micropin is placed on to the surface of skin, and pressing is protected
The top cover of dangerous device drives shell to move downward, and shell bottom end squeezes seesaw spring lower part, the inside sidesway in seesaw spring lower end
Dynamic, when the convex block of injection interior of shell is left in seesaw spring lower end, the injection spring inside injection rod pops up outward, injects
Bar is moved down using injection spring pop-up power, and the injection putter of injection rod lower end pushes piston, and the medical fluid in cylindrantherae is downward
It squeezes, passes through microneedle injection to subcutaneous tissue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910359784.XA CN109908434A (en) | 2019-04-29 | 2019-04-29 | A kind of replaceable drug is prefilled with automatic injector and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910359784.XA CN109908434A (en) | 2019-04-29 | 2019-04-29 | A kind of replaceable drug is prefilled with automatic injector and its working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109908434A true CN109908434A (en) | 2019-06-21 |
Family
ID=66978951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910359784.XA Pending CN109908434A (en) | 2019-04-29 | 2019-04-29 | A kind of replaceable drug is prefilled with automatic injector and its working method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109908434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110946633A (en) * | 2019-11-26 | 2020-04-03 | 杭州电子科技大学 | Portable quick extrusion device |
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|---|---|---|---|---|
| WO1994011041A1 (en) * | 1992-11-19 | 1994-05-26 | R G S.A.S. Di Rosaria Galli & C. | Disposable auto-injector for prefilled syringes |
| WO2016060908A1 (en) * | 2014-10-12 | 2016-04-21 | Min Wei | Automatic injection device for multiple dosing |
| CN106492313A (en) * | 2016-12-27 | 2017-03-15 | 甘肃成纪生物药业有限公司 | A kind of cassette full-automatic injecting pen |
| CN107530506A (en) * | 2015-04-28 | 2018-01-02 | 诺和诺德股份有限公司 | A kind of medication injections device with adjustable movable needle shield with the wash chamber for pin |
| CN108495672A (en) * | 2015-11-27 | 2018-09-04 | 赛诺菲-安万特德国有限公司 | medicament injection apparatus |
| CN211272886U (en) * | 2019-04-29 | 2020-08-18 | 中国人民解放军东部战区总医院 | Pre-filled automatic injector capable of replacing medicine |
-
2019
- 2019-04-29 CN CN201910359784.XA patent/CN109908434A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994011041A1 (en) * | 1992-11-19 | 1994-05-26 | R G S.A.S. Di Rosaria Galli & C. | Disposable auto-injector for prefilled syringes |
| WO2016060908A1 (en) * | 2014-10-12 | 2016-04-21 | Min Wei | Automatic injection device for multiple dosing |
| CN107530506A (en) * | 2015-04-28 | 2018-01-02 | 诺和诺德股份有限公司 | A kind of medication injections device with adjustable movable needle shield with the wash chamber for pin |
| CN108495672A (en) * | 2015-11-27 | 2018-09-04 | 赛诺菲-安万特德国有限公司 | medicament injection apparatus |
| CN106492313A (en) * | 2016-12-27 | 2017-03-15 | 甘肃成纪生物药业有限公司 | A kind of cassette full-automatic injecting pen |
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| Title |
|---|
| 张雷;邬义杰;李佳琪;张胜芝;: "剂量和深度可调式无针注射器的研究", 中国机械工程, no. 04, 25 February 2011 (2011-02-25) * |
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| CN110946633A (en) * | 2019-11-26 | 2020-04-03 | 杭州电子科技大学 | Portable quick extrusion device |
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