CN103830807B - Safe excitation apparatus in a kind of safe syringe - Google Patents
Safe excitation apparatus in a kind of safe syringe Download PDFInfo
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- CN103830807B CN103830807B CN201410025398.4A CN201410025398A CN103830807B CN 103830807 B CN103830807 B CN 103830807B CN 201410025398 A CN201410025398 A CN 201410025398A CN 103830807 B CN103830807 B CN 103830807B
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Abstract
The invention provides the safe excitation apparatus in a kind of safe syringe, belong to medical apparatus field. when it has solved existing syringe use, controllability is low, the problems such as operation requirements height. in safe excitation apparatus in safety formula syringe, syringe comprises syringe, core bar, needle holder and flexible plug, needle holder is connected in syringe end, core bar the inner and plug are all positioned at syringe, plug is tubular and is enclosed within on core bar, between core bar the inner and needle holder, there is the fastening structure that can make both be connected, this device comprises the pallet that is positioned at core bar the inner, on pallet, there is the plush copper that excites of some protrusions, plug end is resisted against and excites in plush copper, when apply external force promote core bar make above-mentioned excite plush copper to insert in plug after, fastening structure can make needle holder be connected with core bar. it is high that safe excitation apparatus in safety formula syringe has controllability, low to operation requirements, advantages of simple structure and simple.
Description
Technical field
The invention belongs to medical apparatus field, relate to a kind of syringe, particularly the safety in a kind of safe syringeExcitation apparatus.
Background technology
Syringe is a kind of common medical instruments, mainly in order to liquid medicine injection or drawing liquid. The syringe of use is most nowUse plastics manufacture, with once throwing away, the danger infecting occurs while having greatly reduced injection. Have in the market many withThe syringe of self-destroying function, this kind of syringe can reduce the reusable danger of syringe.
For example Chinese patent literature data discloses self-destruction syringe [application number 201010139857.3; Granted publicationNumber: CN101804228A], this self-destruction syringe comprises core bar, overcoat, needle tubing and needle tube sheath, overcoat front end is provided with conehead,Core bar is placed in overcoat, and needle tubing is assemblied on the conehead of overcoat front end, and needle tubing is furnished with sheath, conehead and overcoat concentric, coneheadThe wall of endoporus is provided with pawl groove; Core bar front end face is provided with the small plunger matching with the conehead endoporus of overcoat front end, pillarPlug and core bar concentric, small plunger is provided with the pawl mating with pawl groove; Core bar rear portion is provided with fracture belt, before and after fracture beltCore bar connects by contact point; The end of core bar is provided with handle.
In this injector to inject process, promote core bar until core bar is positioned at the end of overcoat, after injection, small plunger withThe engaging of pawl groove, the protruding weir of sealing that is positioned at core bar front end face also falls into the closed loop cannelure of outer casing inner wall front end root, jointly realExisting self-locking, pulls back core bar if continue, handle will rupture, and core bar will be positioned at overcoat completely, thereby forms self-destruction, avoidsThe harm that reuses of syringe, arrive jacket bottom but this syringe promotes core bar in the time of the air of getting rid of in overcoat,Now thereby operator is very easy to cause syringe also not use and just scrap, controllability because undue force triggers self-locking mechanismLow, high to operating personnel's operation requirements. In addition, this syringe is after self-destruction, and its syringe needle is still exposed to outside, still depositsStab people's possibility at syringe needle.
Summary of the invention
The object of the invention is for the above-mentioned problems in the prior art, provide in a kind of safe syringeSafe excitation apparatus, the safe excitation apparatus controllability in this safe syringe is high, low to operation requirements, simple in structure, separatesWhen the existing syringe of having determined uses, controllability is low, the problems such as operation requirements height.
Object of the present invention can realize by following technical proposal: the safety in a kind of safe syringe excites dressPut, syringe comprises syringe, core bar, needle holder and flexible plug, and described needle holder is connected in syringe end, described coreInner and the plug of bar is all positioned at syringe, and above-mentioned plug is tubular and is enclosed within on core bar, the inner and needle holder of described core bar itBetween there is the fastening structure that can make both be connected, it is characterized in that, this device comprises the pallet that is positioned at core bar the inner, describedOn pallet, have the plush copper that excites of some protrusions, above-mentioned plug end is resisted against and excites in plush copper, promotes core bar when applying external forceMake above-mentioned excite plush copper to insert in plug after, above-mentioned fastening structure can make needle holder be connected with core bar.
Syringe is realized disposable aspiration needle retraction, the safety device that fastening structure is syringe by safe excitation apparatus.Plug has elasticity, before extraction liquid, needs to get rid of air in syringe, promotes core bar, and the inner plug of core bar arrives the bottom of syringeRepresent air in cylinder to be got rid of clean, now apply one and larger try hard to recommend moving core bar, plug distortion, activates the peace of syringeGlobal function, triggers fastening structure, and needle holder is connected with core bar, pulls core bar that needle holder is easily bounced back, and guarantees to have pollutedSyringe needle can not work the mischief. This syringe rubber plug can be shifted syringe bottom onto can not make syringe scrap, by user voluntarilyDetermine when excite safety device, there is controllability high, simple structure, advantage with low cost.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described pallet is in the form of annular discs, above-mentioned sharpSend out plush copper taking pallet center as benchmark is circumferentially distributed on pallet side.
While exciting plush copper to be evenly distributed on to make to excite plush copper effect plug on the end face of pallet stressed evenly, promote easilyCore bar triggers fastening structure.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described in to excite the quantity of plush copper be 2-5Individual.
On pallet, having 4 and excite plush copper, in practice, can be 2 to 5 according to actual conditions quantity.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described in excite plush copper to be cuboid.
In actual production, exciting plush copper can be cylinder, cone and other curved body shapes.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described in excite plush copper total in the projection of palletThe Area Ratio of area and pallet is 1:10-30.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described in excite plush copper total in the projection of palletThe Area Ratio of area and pallet is 1:13-18.
When both Area Ratios are that the security function result of use of this syringe is good between 1:13 to 1:18 time.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described core bar the inner also has the glue of stretching outThe fastening rod of plug, above-mentioned fastening structure is between fastening rod and needle holder.
One end of fastening rod through plug be connected in core bar the inner on.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described fastening structure comprises in needle holderThe fastening pawl of the bulge loop that side is protruded ringwise and fastening rod sides tapered, described fastening pawl is crossed the end energy that fastens pawl after bulge loopBe buckled on bulge loop.
The other end sidepiece that fastens pawl has the fastening pawl of inclination, fastens pawl and has elasticity, promotes core bar, fastens pawl and crossesBulge loop, because flexible effect is buckled on the end face of bulge loop, completes snap action, and this structure has simple in structure, easy to operate provinceThe advantage of power.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described fastening structure comprises and is fixed on pinThe snap ring of the claw that headstock is tilted and fastening rod end, described snap ring is crossed the end of snap ring after claw and can be buckled on claw.
The snap ring of fastening rod forms the groove entering for claw, promotes core bar and completes snap action.
In safe excitation apparatus in above-mentioned a kind of safe syringe, excite plush copper to be resisted against described in before excitingPlug end, now being reserved with between above-mentioned bulge loop and fastening pawl end excites distance, and this reserved distance that excites is slightly less thanExcite the height of plush copper.
In practical operation, while triggering security function, excite the actual displacement amount of plush copper less than default ideal value,Bulge loop and fasten distance between pawl end and be slightly less than and excite the height of plush copper just can make to fasten pawl to cross bulge loop and button completelyThereby on bulge loop, realize lock jointing function.
In safe excitation apparatus in above-mentioned a kind of safe syringe, between described fastening rod and pallet, also haveSecondary pallet, above-mentioned plug is enclosed within on secondary pallet, and described plug end has the forced section protruding to its inner side, described forced section oneSide is resisted against on secondary pallet, and the opposite side of described forced section and the above-mentioned plush copper that excites lean.
Plug is enclosed within on the secondary pallet of core bar by forced section, causes plug come off and misplace while preventing from promoting core bar. SwashSend out plush copper and trigger fastening structure by acting on forced section and entering forced section.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described plug sidepiece has recessed distortionGroove.
Need to excite safety device time, promote core bar, the existence of distortion groove easily deforms plug, promotes core bar energyEnough laborsaving.
In safe excitation apparatus in above-mentioned a kind of safe syringe, described syringe outside has scale and indicates,0 graduation mark that the upper edge of plug is marked with scale after plug is pushed through syringe front end aligns.
Scale indicates person easy to use determines the position of core bar, confirms whether the air in syringe has been got rid of totally, separatelyTo trigger safety device if can remind user now to continue to promote core bar outward.
Compared with prior art, the safe excitation apparatus in a kind of safe syringe provided by the invention has following excellentPoint:
1, syringe is realized disposable aspiration needle retraction by safety excitation apparatus, can before extraction liquid medicine, enter syringeRow exhaust and do not cause safety device to be triggered, after having injected, user can decide when activate safety device in its sole discretion,Controllability is high.
2, on the core bar of syringe, cover has plug, the sidepiece of plug to have distortion groove and to be resisted against exciting of core bar pallet protrudingOn head, simple structure, the core bar that uses less excitation force just can make to be positioned at syringe bottom continue to move forward certain distance fromAnd activating safety device, user can laborsaving operation like a cork.
3, the syringe of syringe outside has scale and indicates, and scale indicates person easy to use determines the position of core bar, confirmsWhether the air in syringe has been got rid of totally, will trigger safety dress if can remind in addition user now to continue to promote core barPut, practicality is high.
4, after the safe excitation apparatus in safety formula syringe triggers, pull core bar by needle retractable inserting needle cylinder, fromFundamentally solve the exposed problem that contaminated syringe needle damages people outside.
Brief description of the drawings
Fig. 1 is that syringe is in the complete structural representation of exhaust;
Fig. 2 is the structural representation of the safe excitation apparatus in safety formula syringe while being excited;
Fig. 3 is the syringe cutaway view of syringe;
Fig. 4 is the needle holder cutaway view of syringe;
Fig. 5 is the core bar structure schematic diagram of syringe;
Fig. 6 is the support holder structure schematic diagram of the safe excitation apparatus in safety formula syringe;
Fig. 7 is the plug structural representation of syringe.
Fig. 8 excites plush copper to be of a size of length 2mm, height 1mm, displacement when width 0.5mm and the relation of axial forceFigure.
Fig. 9 excites plush copper to be of a size of length 2mm, height 1mm, displacement when width 0.8mm and the relation of axial forceFigure.
Figure 10 excites plush copper to be of a size of length 2mm, height 1mm, displacement when width 1mm and the relation of axial forceFigure.
In figure, 1, syringe; 2, needle holder; 2a, bulge loop; 3, core bar; 3a, pallet; 3a1, excite plush copper; 3b, fastening rod;3b1, fastening pawl; 3c, secondary pallet; 4, plug; 4a, forced section; 4b, distortion groove; 5,0 graduation mark.
Detailed description of the invention
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention be further described,But the present invention is not limited to these embodiment.
Embodiment mono-
As shown in Figure 1, syringe is disposable aspiration needle retractable safety injector, comprises syringe 1, needle holder 2, core bar 3With there is flexible plug 4. Syringe 1 front end sleeve in needle holder 2 and both tight fits, as shown in Figure 4, needle holder 2 inner side toolsThere is the bulge loop 2a protruding ringwise. Core bar 3 the inners and plug 4 are all positioned at syringe 1, and plug 4 is tubular and is enclosed within on core bar 3,Syringe 1 rear end is stretched out in core bar 3 outer ends.
As shown in Figure 5 and Figure 6, core bar 3 the inners are fixed with pallet 3a in the form of annular discs, on pallet 3a, are fixed with pallet 3aCenter be benchmark 4 protrusions being circumferentially distributed on pallet 3a side excite plush copper 3a1, the equally distributed plush copper 3a1 that excites doesStressed even during with plug 4. In actual production, the quantity that excites plush copper 3a1 can be defined as to 2 to 5 according to actual conditions.Core bar 3 the inners also have the fastening rod 3b that stretches out plug 4, have the fastening pawl 3b1 of inclination on the sidepiece of fastening rod 3b, fasten pawl3b1 has elasticity, fastens pawl 3b1 and can cross like a cork bulge loop 2a, and the end that fastens pawl 3b1 can be buckled on bulge loop 2a. Fasten pawl3b1 and bulge loop 2a form the fastening structure of syringe, and the safety device that fastening structure is syringe need to trigger the peace of syringeWhen full device, only need to promote core bar 3 and arrive syringe 1 bottom and continue afterwards applied thrust and can trigger the safety device of this syringe,Simple in structure, easy to operate. In actual production, can fastening structure be fabricated to and comprise and be fixed on syringe needle according to actual conditionsSeat 2 tilted claws and the snap ring of fastening rod 3b end, promote core bar 3, and snap ring is crossed the end of snap ring after claw and can be buckled inOn claw, can trigger safety device, simple in structure, easy to operate. Between fastening rod 3b and pallet 3a, also have in the form of annular discsSecondary pallet 3c, secondary pallet 3c is for fixing plug 4.
In the time not triggering safety device, while exciting plush copper 3a1 to be resisted against plug 4 end, bulge loop 2a and fastening pawl 3b1 endBetween distance be slightly less than the height that excites plush copper 3a1. In practical operation, while triggering security function, excite plush copper 3a1'sActual displacement amount is less than default ideal value, bulge loop 2a and fasten distance between pawl 3b1 end and be slightly less than and excite plush copperThereby highly just can make to fasten pawl 3b1 crosses bulge loop 2a completely and is buckled in the upper lock jointing function of realizing of bulge loop 2a.
As shown in Figure 7, plug 4 ends have the forced section 4a protruding to its inner side, and forced section 4a mono-side is resisted against secondary holderDish 3c is upper, and secondary pallet 3c causes plug 4 come off and misplace while preventing from promoting core bar 3. The opposite side of forced section 4a with excite plush copper3a1 leans, and excites plush copper 3a1 to trigger fastening structure by acting on forced section 4a and entering forced section 4a, and plug 4 sidepieces alsoThere is recessed distortion groove 4b. When the existence of distortion groove 4b makes to promote core bar 3 and need excite fastening structure, plug easily deforms,Can laborsavingly easily excite.
As shown in Figure 3, syringe 1 outside has scale and indicates, the upper edge of plug 4 after plug 4 is pushed through syringe 1 front end0 graduation mark 5 being marked with scale aligns. Scale indicates person easy to use determines the position of core bar 3, confirms the sky in syringe 1Whether gas has been got rid of totally, will trigger safety device if can remind in addition user now to continue to promote core bar 3.
As shown in Figure 2, Fig. 2 is safe excitation apparatus in the safety formula syringe structural representation while being excited. CrossJourney is as follows: promote core bar 3, while alignment with 0 graduation mark 5 in the bottom that the inner plug 4 of core bar 3 arrives syringe, show now syringe 1Interior air has been got rid of only, can extract liquid medicine and injection work, after injection, applies one and larger tries hard to recommend moving coreBar 3, now plug 4 is out of shape, and fastens pawl 3b1 and continues to advance to bulge loop 2a, excites safety device, triggers fastening structure, fastensPawl 3b1 is buckled in bulge loop 2a, pulls core bar 3 that needle holder 2 is easily bounced back, and guarantees that polluted syringe needle can not work the mischief. NoteEmitter plug 4 can be shifted syringe bottom onto and can not make syringe scrap, and decides when excite safety in its sole discretion by userDevice, has controllability high, simple structure, advantage with low cost.
In addition, the plush copper 3a1 that excites of syringe is cuboid, and in actual production, exciting plush copper 3a1 can be cylinderBody, cone and other curved body shapes. Excite plush copper 3a1 at the projection gross area of pallet 3a and the Area Ratio of pallet 3a to be1:15, this ratio is optimal proportion, excites plush copper 3a1 along the axial pressure maximum of core bar 3, in actual production, excites plush copper3a1 can be between 1:10-30 at the projection gross area of pallet and the Area Ratio of pallet.
In the present embodiment, exciting plush copper 3a1 quantity is 4, is of a size of length 2mm, height 1mm, width 0.5mm.
Below for exciting the relation table of plush copper 3a1 displacement and axial force. In order to observe and to excite plush copper 3a1 more intuitivelyThe relation of displacement and axial force, as shown in Figure 8.
Embodiment bis-
The present embodiment is basic identical with structure and the principle of embodiment mono-, and different places are, in the present embodiment, excitePlush copper 3a1 is of a size of length 2mm, height 1mm, width 0.8mm.
Below for exciting the relation table of plush copper 3a1 displacement and axial force. In order to observe and to excite plush copper 3a1 more intuitivelyThe relation of displacement and axial force, as shown in Figure 9.
Embodiment tri-
The present embodiment is basic identical with structure and the principle of embodiment mono-, and different places are, in the present embodiment, excitePlush copper 3a1 is of a size of length 2mm, height 1mm, width 1mm.
Below for exciting the relation table of plush copper 3a1 displacement and axial force. In order to observe and to excite plush copper 3a1 more intuitivelyThe relation of displacement and axial force, as shown in figure 10.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit. Technology neck under the present inventionThe technical staff in territory can make various amendments or supplements or adopt similar mode to replace described specific embodimentGeneration, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used syringe 1, needle holder 2, bulge loop 2a, core bar 3, pallet 3a herein, excited plush copper 3a1, buckledClose the terms such as bar 3b, fastening pawl 3b1, secondary pallet 3c, plug 4, forced section 4a, distortion groove 4b, 0 graduation mark 5, but do not get rid of and makeBy the possibility of other term. Use these terms to be only used to describe more easily and explain essence of the present invention; ItTo be construed to any additional restriction be all contrary with spirit of the present invention.
Claims (9)
1. the safe excitation apparatus in safe syringe, syringe comprise syringe (1), core bar (3), needle holder (2) andFlexible plug (4), described needle holder (2) is connected in syringe (1) end, described core bar (3) the inner and all positions of plug (4)In syringe (1), above-mentioned plug (4) is tubular and is enclosed within core bar (3) above, between described core bar (3) the inner and needle holder (2)Have the fastening structure that can make both be connected, it is characterized in that, this device comprises the pallet (3a) that is positioned at core bar (3) the inner,What on described pallet (3a), have some protrusions excites plush copper (3a1), and above-mentioned plug (4) end is resisted against and excites plush copper(3a1) upper, when apply external force promote core bar (3) make above-mentioned excite plush copper (3a1) to insert in plug (4) after, above-mentioned fastening structureCan make needle holder (2) be connected with core bar (3); Described pallet (3a) is in the form of annular discs, and the above-mentioned plush copper (3a1) that excites is with pallet(3a) center is that benchmark is circumferentially distributed on pallet (3a) side; Described plug (4) sidepiece also has recessed distortion groove (4b).
2. the safe excitation apparatus in a kind of safe syringe according to claim 1, is characterized in that, above-mentioned oneIn kind of safe syringe, described in excite the quantity of plush copper (3a1) to be 2-5.
3. according to the safe excitation apparatus in a kind of safe syringe described in claim 1 or 2, it is characterized in that, described sharpSend out plush copper (3a1) and be cuboid.
4. according to the safe excitation apparatus in a kind of safe syringe described in claim 1 or 2, it is characterized in that, described sharpSending out plush copper (3a1) is 1:10-30 at the projection gross area of pallet (3a) and the Area Ratio of pallet (3a).
5. according to the safe excitation apparatus in a kind of safe syringe described in claim 1 or 2, it is characterized in that, described sharpSending out plush copper (3a1) is 1:13-18 at the projection gross area of pallet (3a) and the Area Ratio of pallet (3a).
6. according to the safe excitation apparatus in a kind of safe syringe described in claim 1 or 2, it is characterized in that, describedCore bar (3) the inner also has the fastening rod (3b) of stretching out plug (4), and above-mentioned fastening structure is positioned at fastening rod (3b) and needle holder(2) between.
7. according to the safe excitation apparatus in a kind of safe syringe described in claim 1 or 2, it is characterized in that, describedFastening structure comprises the bulge loop (2a) that protrudes ringwise needle holder (2) inner side and the fastening pawl of fastening rod (3b) sides tapered(3b1), only after exciting, described fastening pawl (3b1) just can be crossed bulge loop (2a), and the end that now fastens pawl (3b1) can be buckled inOn bulge loop (2a).
8. according to the safe excitation apparatus in a kind of safe syringe described in claim 1 or 2, it is characterized in that, describedFastening structure comprises the snap ring that is fixed on the tilted claw of needle holder (2) and fastening rod (3b) end, and described snap ring is crossed cardAfter pawl, the end of snap ring can be buckled on claw.
9. the safe excitation apparatus in a kind of safe syringe according to claim 7, is characterized in that institute before excitingState and excite plush copper (3a1) to be resisted against plug (4) end, now reserving between above-mentioned bulge loop (2a) and fastening pawl (3b1) endExcite distance, and this reserved distance that excites is slightly less than the height that excites plush copper (3a1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025398.4A CN103830807B (en) | 2014-01-21 | 2014-01-21 | Safe excitation apparatus in a kind of safe syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025398.4A CN103830807B (en) | 2014-01-21 | 2014-01-21 | Safe excitation apparatus in a kind of safe syringe |
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| Publication Number | Publication Date |
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| CN103830807A CN103830807A (en) | 2014-06-04 |
| CN103830807B true CN103830807B (en) | 2016-05-25 |
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| CN201410025398.4A Active CN103830807B (en) | 2014-01-21 | 2014-01-21 | Safe excitation apparatus in a kind of safe syringe |
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| CN111658895A (en) * | 2020-06-16 | 2020-09-15 | 徐立 | Retractable safety syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862490B (en) * | 2010-06-21 | 2012-07-11 | 温岭市千禧光医疗器械有限公司 | Self-destruction insulin syringe capable of replacing needle |
| CN103463713B (en) * | 2012-06-06 | 2019-09-13 | 千禧光医疗科技(上海)有限公司 | Disposable syringe and push rod for disposable syringe |
| CN203724565U (en) * | 2014-01-21 | 2014-07-23 | 玉环县正日塑机有限公司 | Safe excitation device in safety type injector |
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Application publication date: 20140604 Assignee: HUNAN LUZHOU HUIKANG DEVELOPMENT CO., LTD. Assignor: Yuhuan Zhengri Plastic Machine Co., Ltd. Contract record no.: 2017430000009 Denomination of invention: Safe activating device in safety injector Granted publication date: 20160525 License type: Exclusive License Record date: 20170524 |