CN100502967C - Needle head structure of syringe - Google Patents

Abstract

A needle head structure of injector comprises a base, a coil pipe, a base and a stop structure, wherein the base is equipped with a sleeve pipe in a protruding way, the front end of the sleeve pipe is inserted with an injection needle, the back end of the base is equipped with a sleeve part in a concave way, the base is connected with the base by the coil pipe, the back end of the base is equipped with a containing part in a concave way, the front end of the base is equipped with a containing hole connected with the containing part, the containing part is equipped with a convex ring in the outer edge of the containing hole, the side edge of the back end of the base is equipped with a buckle seat, the stop structure is composed of a front stop block, a back stop block and one or more than one bending plates, the bending plates are connected between the front stop block and the back stop block, the front end of the front stop block is equipped with a buckle part buckled with the buckle seat of the base, and the back end of the back stop block is propped against the front edge.

Description

The needle head structure of syringe

Technical field

The invention relates to a kind of needle head structure of syringe, be meant especially a kind of needle cover to be used in combination with syringe needle, and reduce the needle head structure of dangerous syringe.

Background technology

See also Figure 28, the needle head structure of conventional injector is to be extended with a sleeve pipe on a base, this sleeve pipe front end is inserted with an entry needle, and convex with most buttons in the side of this sleeved part and support element, and each button supports element and all extends to telescopic side, in addition, this syringe needle inside offers a sleeve part, this sleeve part is the front end that is sheathed on syringe cylinder, this syringe needle front end then with a needle cover cover cap outside entry needle, and the needle cover interior sidewall surface is supported element with button and is fastened; When desire is made extraction or action of injection, the needle head structure of conventional injector need thrust entry needle patient's affected part then with needle cover by taking off on the syringe needle, and does the action of injection or extraction with syringe cylinder, and when injection or extract finish after, abandon after again needle cover being covered back; Only, because the needle head structure of this kind conventional injector needs needle cover is taken off when doing to extract or inject, therefore, the as easy as rolling off a log needle cover that causes is lost, entry needle is exposed outside when causing syringe needle to abandon, and causes danger, and owing to after injection finishes, need needle cover is covered back, at this moment, if medical personnel because of carelessness then easily by injection acupuncture to and cause infection.

This shows that above-mentioned existing article still have many disappearances, real non-one perfect design, and demand urgently being improved.

The inventor is urgently to think to be improved innovation in view of the deutero-every shortcoming of needle head structure of above-mentioned existing syringe, and after concentrating on studies through taking great pains to attain one's goal for many years, and successfully the needle head structure of this part syringe is finished in research and development finally.

Summary of the invention

It is a kind of with the entry needle of syringe and the needle head structure of the bonded syringe of needle cover that purpose of the present invention promptly is to provide.

An of the present invention purpose is to be to provide a kind of avoiding to lose the needle head structure that causes dangerous syringe because of needle cover.

Can reach the needle head structure of the syringe of foregoing invention purpose, include:

One base convexes with a sleeve pipe on this base, and this sleeve pipe front end is inserted with an entry needle, and the rear end of base then is concaved with a sleeve part;

One coiled pipe, this coiled pipe are to be arranged between base and the pedestal;

One pedestal, this pedestal rear end is concaved with a holding part, and the front end of pedestal offers a containing hole that joins with holding part, and holding part is equipped with a bulge loop in the containing hole outer rim, and the side in the pedestal rear end is provided with a snap seats;

One Stop structure, this Stop structure is made of positive stop, backstop and one or more bending plate, this bending plate is to be connected between positive stop and the backstop, and can be provided with kink in the middle of the bending plate, and the snap seats that the front end of this positive stop is provided with a clamping part and pedestal articulates.

Description of drawings

See also the detailed description and the accompanying drawing thereof of following relevant a preferred embodiment of the present invention, can further understand technology contents of the present invention and purpose effect thereof; The accompanying drawing of relevant this embodiment is:

Fig. 1 is the stereo appearance figure of the needle head structure of syringe of the present invention;

Fig. 2 is the three-dimensional exploded view of the needle head structure of this syringe;

Fig. 3 is the user mode sketch map of the needle head structure of this syringe;

Fig. 4 is the side sectional view of the needle head structure of this syringe;

Fig. 5 is the lateral action sketch map () of the needle head structure of this syringe;

Fig. 6 is the lateral action sketch map (two) of the needle head structure of this syringe;

Fig. 7 is the lateral action sketch map (three) of the needle head structure of this syringe;

Fig. 8 is the lateral action sketch map (four) of the needle head structure of this syringe;

Fig. 9 is the stereo appearance figure of needle head structure first embodiment of this syringe;

Figure 10 is the needle head structure second real stereo appearance figure that drags example of this syringe;

Figure 11 is the side sectional view of needle head structure the 3rd embodiment of this syringe;

Figure 12 is the stereo appearance figure of needle head structure the 4th embodiment of this syringe;

Figure 13 is the stereo appearance figure of needle head structure the 5th embodiment of this syringe;

Figure 14 is the three-dimensional exploded view of needle head structure the 6th embodiment of this syringe;

Figure 15 is the three-dimensional exploded view of needle head structure the 7th embodiment of this syringe;

Figure 16 is the three-dimensional exploded view of needle head structure the 8th embodiment of this syringe;

Figure 17 is the side sectional view of needle head structure the 9th embodiment of this syringe;

Figure 18 is the three-dimensional exploded view of needle head structure the tenth embodiment of this syringe;

Figure 19 is the stereo appearance figure of needle head structure the 11 embodiment of this syringe;

Figure 19 (A) is the front view of needle head structure the 11 embodiment of this syringe;

Figure 19 (B) is the front action sketch map of needle head structure the 11 embodiment of this syringe;

Figure 20 is the stereo appearance figure of needle head structure the 12 embodiment of this syringe;

Figure 21 is the stereo appearance figure of needle head structure the 12 embodiment of this syringe;

Figure 22 is the stereo appearance figure of needle head structure the 12 embodiment of this syringe; And

The three-dimensional exploded view of the needle head structure of the existing syringe of Figure 23.

The specific embodiment

See also Fig. 1,2,3 and Fig. 4, the needle head structure of syringe provided by the present invention, mainly include: abase 1, convex with asleeve pipe 11 on thisbase 1, and thesesleeve pipe 11 front ends are inserted with anentry needle 12, and the rear end ofbase 1 then is concaved with asleeve part 13 and can joins withsyringe cylinder 5 ordrip bag 6;

One coiledpipe 2, thiscoiled pipe 2 are provided with most thering bodies 21 that are the oblique angle, and this coiledpipe 2 is to be arranged betweenbase 1 and thepedestal 3;

Onepedestal 3, thesepedestal 3 rear ends are concaved with aholding part 31, and the front end ofpedestal 3 offers a containinghole 32 that joins with holdingpart 31, and holdingpart 31 is equipped with abulge loop 33 in containinghole 32 outer rims, and then being concaved withmost slots 311 in the front end wall ofholding part 31, the side of thesepedestal 3 rear ends is provided with asnap seats 34 in addition;

OneStop structure 4, thisStop structure 4 is made ofpositive stop 41,backstop 42 and one or morebending plate 43, thisbending plate 43 is to be connected betweenpositive stop 41 and thebackstop 42, and be equipped withkink 431 in the middle of thebending plate 43, thesnap seats 34 that the front end of thispositive stop 41 is provided with aclamping part 44 andpedestal 3 fastens, and the rear end ofbackstop 42 then is resisted against the leading edge ofbase 1.

See also Fig. 1,2,4,5,6,7 and Fig. 8, when the needle head structure of syringe provided by the present invention uses, be thatfirst sleeve part 13 withbase 1 is sheathed onsyringe cylinder 5 or thedrip bag 6, and theStop structure 4 that will be fastened on thesnap seats 34 is that outwards dial in the axle center with clampingpart 44,backstop 42 trailing edges andbase 1 leading edge of thisStop structure 4 are broken away from, then the direction ofpedestal 3 tobase 1 pushed away, but folding characteristic by coiledpipe 2, cause coiledpipe 3 to be folded in theholding part 31 ofpedestal 3, and theentry needle 12 on thebase 1 is passed by the containinghole 32 ofpedestal 3, utilizekink 431 thatbending plate 43 is bent then downwards, cause the bottom ofbackstop 42 and the outer side surface of syringe cylinder to join, thisStop structure 4 disturbs operation of medical workers when avoiding injecting, and bring inconvenience, then, entry needle can be thrust patient's the action of affected part to extract or to inject, and after finishing the action of extracting or injecting,entry needle 12 is extracted by patient's affected part, thenpedestal 3 is released forward by coiledpipe 2, at this moment, owing to be thering body 21 at oblique angle on thiscoiled pipe 2, and make whenpedestal 3 is released forward, form an angle betweenpedestal 3 and theentry needle 12, andbulge loop 33 and 31 positions that are provided withslot 311 of storage tank are inserted in the tip of causingentry needle 12, and the tip ofentry needle 12 is for can be inserted in theslot 311, and makeentry needle 12 can't be again pass by the containinghole 32 ofpedestal 3, to avoid causing danger, in addition, theclamping part 44 of thisStop structure 4 can be separated with thesnap seats 34 ofpedestal 3, therefore, the needle head structure of syringe provided by the present invention in use, can be directly withStop structure 4 with afterpedestal 3 separates, againpedestal 3 is pulled back by coiledpipe 2.

See also Fig. 9,10 and Figure 11, in the needle head structure of syringe provided by the present invention, thebackstop 42 of thisStop structure 4 can also be butted on the rear side wall ofbase 1 by its leading edge wall button, moreover, the bottom,bending plate 43 rear ends of thisStop structure 4 then can be provided withsucker 45, therefore working aspedestal 3 retracts to the direction ofbase 1, and utilizekink 431 thatbending plate 43 is bent downwards, and the outer side surface that makes the bottom ofbackstop 42 andsyringe cylinder 5 can be adsorbed insyringe cylinder 5 outer side surfaces by thissucker 45 when joining.

See also Figure 12 and Figure 13, in the needle head structure of syringe provided by the present invention, on thisStop structure 4 for can not establishclamping part 44, and then do not establishsnap seats 34 on thepedestal 3, and directly be resisted againstpedestal 3 rear ends with the positive stop ofStop structure 4, and be resisted against the leading edge ofbase 1 with backstop, therefore when desire is used the needle head structure of syringe provided by the present invention, onlyStop structure 4 must be taken off,pedestal 3 can be pulled back by coiledpipe 2, and when injection or after extracting action and finishing, owing to bering body 21 guiding at oblique angle on the coiledpipe 2, make the tip ofentry needle 12insert bulge loop 33 and 31 positions that are provided withslot 311 of storage tank,entry needle 12 can't be again passed by the containing hole ofpedestal 3, therefore need not againStop structure 4 retainings be placed betweenpedestal 3 and thebase 1, and can directlyStop structure 4 be abandoned, in addition, thisStop structure 4 can also viscoseglue 10 or the material of other tool viscosity, andpositive stop 41 andpedestal 3 are pasted together.

See also Figure 14 and Figure 15, in the needle head structure of syringe provided by the present invention, thissnap seats 34 can also be provided with a drive-connecting shaft 8clamping part 44 ofStop structure 4 is articulated on thesnap seats 34; Or, be extended with aguide rod 341 on thesnap seats 34 of thispedestal 3, and on theclamping part 44 ofStop structure 4, offer aguide hole 443, when the needle head structure of syringe provided by the present invention before use, theguide hole 443 of this clampingpart 44 is that the free end by theguide rod 341 of clampingpart 34 penetrates, andsnap seats 34 is combined with clampingpart 44, and when the needle head structure desire of syringe provided by the present invention is used, only must be with clampingpart 44 by taking off on theguide rod 341,Stop structure 4 can be separated by 1 ofpedestal 3 and base, and makepedestal 3 be able to pull back by coiledpipe 2, with the action of injecting or extracting.

See also Figure 16, in the needle head structure of syringe provided by the present invention, containinghole 32 set on this pedestal also can be made as a strip, and the containinghole 32 of this long strip type is perpendicular with the needle head structure bottom of syringe provided by the present invention, therefore when the needle head structure desire of syringe provided by the present invention is used, only theStop structure 4 of 3 ofbase 1 and pedestals must be pushed away, thenpedestal 3 is butted on patient's the injection part, and withentry needle 12 by releasing in the containinghole 32, at this moment, but because the folding characteristic of coiledpipe 2, and makeentry needle 12 can instrip containing hole 32, adjust the angle of inserting patient infusion portion.

See also Figure 17,18 and Figure 19, the needle head structure of syringe provided by the present invention also can be integrally formed withsyringe cylinder 5; In addition, in the needle head structure of syringe provided by the present invention, the side outer rim of thispedestal 3 or the side ofStop structure 4Handheld Division 35 that all can stretch out, make the medical personnel can the HandheldDivision 35 whenpedestal 3 being pulled back or pushing away forward for the point of application, to make things convenient for medical personnel to operate, moreover, in the needle head structure of syringe provided by the present invention, the front end of thispedestal 3 is for can connect adisinfector 36, wherein thisdisinfector 36 is that anaseptic cotton 362 is set on aholder 361, and the leading edge of thisholder 361 then is sealed inaseptic cotton 362 in theholder 361 with athin film 363, when desiring to carry out intramuscular injection, thisentry needle 12 is that the injection part with the patient is vertical configuration, at this moment, thethin film 363 ofdisinfector 36 can be torn, injection part with 362 couples of patients of aseptic cotton carries out disinfection then, againpedestal 3 is drawn to the direction ofbase 1, makeentry needle 12pass containing hole 32 andaseptic cotton 362, with the action of injecting and extracting, wherein, thisaseptic cotton 362 can also the tool anaesthetic effect cotton body replace, and anaesthetize at patient's injection part.

See also Figure 20, in the needle head structure of syringe provided by the present invention, thisStop structure 4 is not for can establishbending plate 43, and thispositive stop 41 is integrally formed with 42 of backstops, and astyptic cotton 46 is set on the outer side surface of thisStop structure 4, thesestyptic cotton 46 outer rims then with athin film 363 with its sealing, in addition, also can establish an axostylus axostyle 342 on thissnap seats 34, clampingpart 44 is then offered an opening 441 and is socketed on the axostylus axostyle 342 for clampingpart 44, and most domes 442 are set in the inner edge of this opening 441, when the needle head structure of syringe provided by the present invention carries out intravascular injection, thisentry needle 12 is that the injection part with the patient is an oblique angle, therefore in injection or extract when finishing, earlierthin film 363 is torn, thenStop structure 4 is turn topedestal 3 front ends, and be pressed in the patient infusion portion that entry needle inserts with thestyptic cotton 46 ofStop structure 4,entry needle 12 is being extracted by patient's injection part, this moment, this axostylus axostyle 342 can be withdrawed from by opening 441 places of clampingpart 44, makingStop structure 4 andstyptic cotton 46 continue the compressing injection part stops blooding,pedestal 3 then separates withStop structure 4, moreover, this clampingpart 44 also can be done combination with aguide rod 341 and aguide hole 443 as shown in figure 15 withsnap seats 34.

See also Figure 21 and Figure 22, in the needle head structure of syringe provided by the present invention, the inner edge of thisbackstop 42 can be detained the catching groove 421 that is butted onbase 1 outer rim for being provided with one, again, the outer rim of thisbase 1 can be provided with most protrudingbuttons 14, and in theholding part 31 of thispedestal 3, offer protrudingbutton 14 quantity ofcorresponding base 1 and thebutton hole 312 of position, when the action of desiring to extract or inject and withpedestal 3 when the direction ofbase 1 pushes away, can fasten by theprotruding button 14 ofbase 1 and thebutton hole 312 ofpedestal 3, andpedestal 3 is fixed on thebase 1.

See also Figure 23,24,24 (A), 24 (B) and 25, in the needle head structure of syringe provided by the present invention, thesepedestal 3 one sides are for offering aperforation 37 that runs throughpedestal 3, and then be equipped with abaffle plate 371 in thisperforation 37, and the position of corresponding containinghole 32 is provided with aguide hole 372 on thisbaffle plate 371, the needle head structure of syringe provided by the present invention before use, after, can utilize thisbaffle plate 371 that containinghole 32 is sealed, to avoidentry needle 12 to cause dangerous the generation by passing in the containinghole 32, and when desire is used the needle head structure of syringe provided by the present invention, onlybaffle plate 371 must be pulled upwardly, makeguide hole 372 and containinghole 32 overlapping, can makeentry needle 12 pass action to extract or to inject by containinghole 32; In addition, also can not offerperforation 37 on thispedestal 3, thisbaffle plate 371 then joins with a pivoting point 38 andpedestal 3 front ends, by being that move in the axle center withbaffle plate 371 with pivoting point 38, and the containinghole 32 of pedestal is exposed, and makesentry needle 12 be able to be passed by containinghole 32; Moreover thesepedestal 3 front ends can also connect the containinghole 32 that a lid 9 blanketing are livedpedestal 3 by a flexible member 7, only lid 9 must be opened during use to get final product.

See also Figure 26 and Figure 27, also can not establishcoiled pipe 2 andStop structure 4 in the needle head structure of syringe provided by the present invention, and do not establishbulge loop 33 and slot 17, and theprotective sleeve 39 that extends back in the rear end ofpedestal 3, offer achute 391 on thisprotective sleeve 39, offermost button holes 392 on thischute 391, and extend back and run throughprotective sleeve 39 inbutton hole 392 sides ofchute 391 rearmost ends, thischute 391 is equipped withdome 393 with the joint of eachbutton hole 392, the outer rim of thisbase 1 then is provided with abent sheet 15, should then be provided with abutton piece 151 that can buckle in thebutton hole 392 in the curved then top ofsheet 15, before the needle head structure of syringe provided by the present invention uses, bebent sheet 15 to be run throughprotective sleeve 39 parts bybutton hole 392 rear ends penetrate and move in thechute 391, and makeprotective sleeve 39 be sheathed onbase 1 outer rim,button piece 151 withbent sheet 15 1 ends buckles in thebutton hole 392 ofchute 391 rearmost ends again, and replace with thedome 393 ofbutton hole 392 joints bychute 391 and tobuckle piece 151, replace and be fixed in thebutton hole 392 and will detainpiece 151, causeprotective sleeve 39 thatentry needle 12 is enveloped; And when the needle head structure of syringe provided by the present invention uses desire to use, only needbutton piece 151 is separated with thebutton hole 392 ofchute 391 rear ends, andprotective sleeve 39 pulled back, to detain thebutton hole 392 thatpiece 151 buckles into according to the required entry needle that exposes 12 length desires selection again, and will detainpiece 151 and buckle in thisbutton hole 392, and makeprotective sleeve 39 be fixed inbase 1 outer rim, and make entry needle wear 12 actions that go out to inject or to extract; In addition, thebutton hole 392 of thesechute 391 rearmost ends also can not run through thisprotective sleeve 39, and directlyprotective sleeve 39 is sheathed onbase 1 outer rim in processing procedure, and makes in thechute 391 ofbent sheet 15 byprotective sleeve 39 ofbase 1 edge and pass; In addition, thisbent sheet 15 can also replace by a blockedpiece 16, this blockedpiece 16 is provided with agrip part 161, and the bottom of blockedpiece 16 is extended with aslippage bar 162, and be provided with a circle button 163 in the end of thisslippage bar 162, thisbase 1 offers a slot 17 on then, the bottom of slot 17 has afixing hole 171, and offer a locatinghole 172 in the position, top of slot 17, before the needle head structure of syringe provided by the present invention uses, the position of thisprotective sleeve 39 is toenvelope entry needle 12 inbase 1 front end, and this blockedpiece 16 is to be inserted in thebutton hole 392 ofchute 391 rearmost ends, and replace blockedpiece 16 with thechute 391 and thedome 393 ofbutton hole 392 joints, at this moment, the circle button 163 of these blockedpiece 16 bottoms is to be placed in thefixing hole 171 of slot 17; And desire to extract or during action of injection when the needle head structure of syringe provided by the present invention, only blockedpiece 16 must be pulled upwardly, the circle button 163 of blockedpiece 16 bottoms is moved in the locatinghole 172 of slot 17, thenpedestal 3 is pulled back, makepedestal 3 bychute 391 slippage backward on theslippage bar 162 of blockedpiece 16 bottoms, at this moment, 163 on circle button with blockedpiece 16 belows is moved in thefixing hole 171 of slot 17 again, and blockedpiece 16 is inserted in the button hole of desiring to buckle on theprotective sleeve 39 392, makeprotective sleeve 39 be fixed in of the action ofbase 1 outer rim to inject or to extract; In addition; also can be convexly equipped with aslippage bar 162 on thisbase 1; and a circle button 163 is set in the top ofslippage bar 162; and offer a slot 17 in the bottom of blockedpiece 16; the bottom of this slot 17 is for offering afixing hole 171; and a locatinghole 172 is set in the upper position place of slot 17; moreover; the side of thisprotective sleeve 39 also can be established anadhesive tape 394; the front end of thisadhesive tape 394 is mutually bonding withpedestal 3; the outside trailing edge ofadhesive tape 394 then is provided with astyptic cotton 46; when the needle head structure of syringe provided by the present invention in injection or extract when finishing; onlyadhesive tape 394 must be turned over topedestal 3 front ends; and with styptic cotton set on theadhesive tape 394 46 compressing patients' injection part; thenentry needle 12 is extracted by patient's injection part; and whenentry needle 12 is extracted injection part; because thisadhesive tape 394 is the injection part of oppressing in the patient;entry needle 12 is then extracted backward; therefore produce rightabout strength between the two because of application of force direction is different; causeadhesive tape 394 to be separated, and makestyptic cotton 46 be continued the compressing injection part to carry out the hemostatic action withpedestal 3.

The needle head structure of syringe provided by the present invention with aforementioned case and other prior aries quoted as proof mutually relatively the time, has more following advantage:

One, the present invention connects a pedestal by the base outer rim with a coiled pipe, and connects a Stop structure that is resisted against on the base in the pedestal rear end, causes entry needle to be used in combination with needle cover.

Two, the needle head structure of syringe of the present invention is to utilize entry needle and needle cover are used in combination, and loses because of needle cover when injecting or extract avoiding, and causes the entry needle that abandons exposed outside, and then produce dangerous.

Three, the needle head structure of syringe of the present invention is to utilize entry needle and needle cover are used in combination, so cause danger can avoid medical personnel to operate the time.

Above-listed detailed description is specifying at a possible embodiments of the present invention; but this embodiment is not in order to limit scope of patent protection of the present invention; allly do not break away from the equivalence that skill spirit of the present invention does and implement or change, all should be contained in the claim of case of the present invention.

Claims (5)

1. the needle head structure of a syringe is characterized in that, comprising:

One base convexes with a sleeve pipe on this base, and this sleeve pipe front end is inserted with an entry needle, and the rear end of base then is concaved with a sleeve part, and this sleeve part and syringe cylinder or drip bag are joined;

One pedestal; this pedestal rear end is concaved with a holding part; and the front end of pedestal offers a containing hole that joins with holding part; and the protective sleeve that extends back in the rear end of pedestal offers a chute on this protective sleeve, offers most button holes on this chute; and the button hole side of chute rearmost end extends back and runs through protective sleeve; and the joint of this chute and each button hole is equipped with dome, and the outer rim of this base then is provided with a bent sheet, and the top of this bent sheet then is provided with a button piece that buckles in the button hole.

2. the needle head structure of syringe as claimed in claim 1; it is characterized in that; the button hole of described runner rear end one side does not also run through this protective sleeve, and directly protective sleeve is sheathed on the base outer rim in processing procedure, and makes in the chute of bent sheet by protective sleeve of base outer rim and pass.

3. the needle head structure of syringe as claimed in claim 2, it is characterized in that, described bent sheet also replaces with a blocked piece, this blocked piece is provided with a grip part, and the bottom of blocked piece is extended with a slippage bar, and is provided with a circle button in the end of this slippage bar, and this base offers a slot on then, the bottom of slot has a fixing hole, and offers a locating hole in the middle part of slot.

4. the needle head structure of syringe as claimed in claim 3, it is characterized in that, also be convexly equipped with a slippage bar on the described base, and a circle button is set in the top of slippage bar, and offer a slot in the bottom of blocked piece, the top of this slot is for offering a fixing hole, and in the place, centre position of slot one locating hole is set.

5. the needle head structure of syringe as claimed in claim 1 is characterized in that, the side of described this protective sleeve is also established an adhesive tape, and the front end of this adhesive tape is mutually bonding with pedestal, and the outside trailing edge of adhesive tape then is provided with a styptic cotton.

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