CN2569811Y

CN2569811Y - Improved safety syringe

Info

Publication number: CN2569811Y
Application number: CN 02253763
Authority: CN
Inventors: 洪明甘; 谢忠杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-10
Filing date: 2002-09-10
Publication date: 2003-09-03
Anticipated expiration: 2012-09-10

Abstract

The utility model discloses an improved safety syringe. A central column overlapped and provided with a cock body is convexly extended on the front end of a rod body, and the front end of the interior of a barrel body is fixedly provided with a retaining ring, wherein, the front end of which is connected with a needle seat for positioning a needle head. After medicament is injected, the central column of the rod body can be mutually penetrated, extended and buckled with the retaining ring, the retaining ring, the needle seat and the needle head can be pulled and collected following the rod body to be contained and collected in the barrel body, and thus the needle head is smoothly recovered after injection is finished by the utility model. The utility model has the characteristic of one time use and simultaneously has the efficiency of simple and quick safe recovery. The breaking off design of the rod body is matched, and thus material occupation can be reduced, which is favorable for recovery.

Description

The safety syringe-drum of improvement

Technical field

This utility model relates to a kind of high-safety injection tube, be meant that especially a kind of injection finishes after, syringe needle can with the body of rod retract the income inner barrel safety syringe-drum, belong to medical instruments field.

Background technology

The route of infection of source of disease generally all are not quite similar, and some is by droplet infection, and some then is to infect via contact skin, and other then is to be subjected to needle cylinder injection to infect, and for different infections or route of infection, the different methods of preventing and treating is arranged.

What deserves to be explained is, the people who infects by syringe is except because medical personnel injected due to the bad or carelessness of custom, the syringe duplicate injection was used and can be caused source of disease to infect too, therefore modern hospital generally adopts disposable deserted syringe, to avoid the reusable phenomenon of syringe.But, after common deserted syringe was finished using at present, syringe needle was still exposed outside, in discard processing and removal process, still might be stabbed by syringe needle, cause infecting source of disease, therefore need be very careful on handling, yet, but there is not effective solution, use and the safety of handling to improve, so, necessity of improvement is arranged urgently at having defective and the drawback that syringe cylinder structure exists now.

The utility model content

Main purpose of the present utility model is to provide a kind of safety syringe-drum of improvement, after needle cylinder injection is finished, the syringe needle recovery of being taken advantage of a situation, not only has the characteristic that once use is promptly abandoned, have simple and easy, the effect of safety recovery fast simultaneously, take place to prevent that the syringe mistake from pricking human body or therefore infecting morbific situation.

Secondary objective of the present utility model is to provide a kind of safety syringe-drum of improvement, makes syringe after injection finishes, and can take advantage of a situation is converted into two-stage nitration, reduces taking of material with this, is beneficial to recovery simultaneously.

The purpose of this utility model is achieved through the following technical solutions:

A kind of safety syringe-drum of improvement, its formation comprise that one has room and stretches in the cylindrical shell room for the body of rod of pushing medicament, a syringe needle and a needle guard that is sheathed on the syringe needle outside that is positioned barrel front end for the cylindrical shell that holds medicament, an appearance; Wherein this lever front end is connected with a cock body, push medicament in the just salable room that is slidedly arranged on cylindrical shell, the lever front end projection has a newel that supplies cock body to set up, in addition, this inner barrel front end is installed with a clasp that supplies newel to stretch through and fasten, and this clasp front end slide fastener is positioned with one for the localized needle stand of syringe needle.

Form by above member, when user is pushed body of rod injection, and when injection finishes, this body of rod newel can be simultaneously and the clasp fastening that stretches through mutually, and making the body of rod toward the post-tensioning time receiving, this clasp, needle stand and syringe needle drive to hold just thereupon and close at inner barrel, and outside can not being exposed to, reach use and once promptly abandon, and use the safer purpose of recycling.

Lever front end newel bottom be concaved with one can nested fixedly cock body caulking groove, the newel front end then is extended with a needle stand and push the stick harness of medicament of being used to stretch through, and stick harness rear end external diameter is formed with one and can colludes edge with the overhead kick shape that clasp fastens mutually.

Clasp has the bigger end of a diameter, and be extended with the less teat of a diameter, and this teat front end external diameter edge convexes with edge clipping, fovea centralis is provided with a tank, tank central authorities are through with a bellmouth, the clasp end just can be set be positioned in the locating slot that barrel front end internal diameter edge appropriate location ring establishes, and the groove bottom of tank is after body of rod newel stick harness stretches through, it colludes edge can be snapped in the bottom land edge, make the clasp can be with its interlock, and clasp end and teat joint form the thin-walled of bent distortion, make the clasp end break away from the locating slot of cylindrical shell.

Needle stand one end central part projection has the reference column of a tool runner, and be formed with a clip annular groove in the reference column periphery, make that syringe needle is sheathed respectively to be snapped on reference column and the clip annular groove, the needle stand other end then is formed with a slippage annular groove, and in the notch inner wall edge convex with one the button edge, the teat of this clasp just can be slidedly arranged in the slippage annular groove of needle stand, and the edge clipping that makes the teat front end is backward during slippage, can with the mutual buckle of button edge of slippage annular groove, draw narrowing seat for drive, and the runner rear end also can with the sealing that stretches through mutually of body of rod newel.

Lever front end external diameter edge and the internal diameter edge appropriate location of the nearly rear end of cylindrical shell be formed with respectively can relative buckle embedding edge and caulking groove, the body of rod was accurately located toward the post-tensioning time receiving.

The lever front end appropriate location can be arranged with a folding ditch, and this folding ditch is received toward post-tensioning at the body of rod, when being in the snaps into position state, just can being exposed to outer and fractureing, and is beneficial to the syringe recycling.

The utlity model has following effect by above technical scheme:

1, have disposable use and the deserted effect that reclaims safely concurrently: because the projection of this utility model lever front end has newel, can be when injection finishes, the clasp that sets firmly with the inner barrel front end fastens mutually, and there is one for the localized needle stand of syringe needle by this clasp binding, make the body of rod when drug injection finishes, can pull back the moving clasp of take-up, needle stand and syringe needle, syringe needle just can be held close at inner barrel, not only can reach disposable purpose, after simultaneously can guaranteeing that needle cylinder injection finishes, can be convenient, take in inner barrel apace, stab the people to prevent syringe, cause situation about catching, thereby reach safe handling, the effect that reclaims.

2, processing ease, recycling is convenient: because the relative snaps into position structure that is formed with inner barrel opening appropriate location of lever front end of the present utility model, so when the past post-tensioning time receiving of the body of rod, clasp, needle stand and syringe needle are held exactly close at inner barrel, operation accurately fast, and because this body of rod appropriate location is concaved with the structure that fractures of a tool folding ditch, after making the body of rod draw the receipts location, can take advantage of a situation the body of rod is converted into two-stage nitration at folding ditch place, reduce the length of the body of rod with this, make it take less space, also help simultaneously reclaiming.

In sum, after this utility model needle injection finishes, can retract the income inner barrel with the body of rod, not only has the disposable characteristic of abandoning, and Da Jianyi, safety operation fast and recovery effect, simultaneously by the broken formula structure of the body of rod, the material that has reduced when reclaiming takies, be beneficial to reclaim, thereby make integral body have industrial applicibility and cost benefit.

Description of drawings

Fig. 1 is a side-looking section constitutional diagram of the present utility model;

Fig. 2 is a plane exploded view of the present utility model;

Fig. 3 is one of action diagram of the present utility model;

Fig. 4 is two of an action diagram of the present utility model;

Fig. 5 is three of an action diagram of the present utility model;

Fig. 6 is four of an action diagram of the present utility model;

Configuration status figure when Fig. 7 finishes for this utility model injection between each member of lever front end;

Fig. 8 finishes the body of rod toward the configuration status figure between each member of post-tensioning time receiving for this utility model injection.

The specific embodiment:

Below in conjunction with the drawings and specific embodiments this utility model is elaborated:

As shown in Figure 1 and Figure 2, this utility model is a safety syringe-drum, mainly comprises: one has room 11 and stretches in the room 11 for the body of rod 20 of pushing medicament, a syringe needle 30 and a needle guard 40 that is sheathed on syringe needle 30 outsides that is positioned cylindrical shell 10 front ends for the cylindrical shell 10 that holds medicament, appearance; Wherein, the body of rod 20 front ends are connected with a cock body 50, and just salable being slidedly arranged in the room 11 is beneficial to pushing of medicament.

As Fig. 3-shown in Figure 8, main improvement of the present utility model is: the above-mentioned body of rod 20 front end projections have a newel 21 that cock body 50 is connected, in addition, these cylindrical shell 10 interior forward end are installed with a clasp 60 that supplies newel 21 to stretch through and fasten, and these clasp 60 front end slide fasteners are positioned with one for syringe needle 30 localized needle stands 70; Form by above member, when user is pushed the body of rod 20 injections, and when injection finishes, newel 21 just can with clasp 60 fastening that stretches through mutually, the body of rod 20, clasp 60, needle stand 70 and syringe needle 30 are linked are one, so work as user with the 20 past post-tensioning time receivings of the body of rod, this clasp 60, needle stand 70 and syringe needle 30 all can be with its interlocks backward, and income cylindrical shell 10 inside, and the syringe needle 30 that injection is finished can not stayed outside the syringe, avoided stabbing human body, even the probability of communicate illness.

Composition that it should be noted that above-mentioned newel 21 comprises: the bottom is arranged with a caulking groove 211, and front end extends a stick harness 212, and what stick harness 212 rear end external diameters were formed with the overhead kick shape colludes edge 213, and cock body 50 just can sheathed build-in in caulking groove 211.

Secondly, the composition of clasp 60 comprises: a larger-diameter end 61 is extended with a teat 62 than minor diameter, and convexes with edge clipping 621 at teat 62 front end external diameter edge, and fovea centralis is provided with a tank 622, and tank 622 central authorities are penetrated with a bellmouth 611; This clasp 60 can be set by end 61 to be positioned in the locating slot 111 that cylindrical shell 10 front inner diameter appropriate location rings establish, simultaneously when the body of rod 20 is passed to cylindrical shell 10 front ends forward, stick harness 212 can stretch through just and be placed in the tank 622, and make colluding edge 213 and can fastening the formation clamping structure of interlock backward mutually of overhead kick shape with the groove bottom 622A of tank 622, wherein this clasp 60 utilizes the design of bellmouth 611, can make the end 61 and the joint of teat 62 form a thin-walled, so after clasp 60 tensions are pulled the power effect, can make end 61 break away from the locating slot 111 of cylindrical shell 10 by the bending distortion at this thin-walled place.

Once more, the composition of needle stand 70 comprises: the reference column 71 of an end central part projection one tool runner 711, the reference column 71 peripheral clip annular grooves 72 that form, and the other end forms a slippage annular groove 73, and the notch inner wall edge be convexly equipped with one the button edge 731, make syringe needle 30 just simultaneously sheathed clip on reference column 71 and clip annular groove 72,62 of the teats of clasp 60 can be slidedly arranged in the slippage annular groove 73, and the teat 62 front end edge clippings 621 that make embedding are when the Hou slippage, just can with button edge 731 mutual buckles, so that clasp 60 can pull back the moving needle stand 70 of take-up, and the stick harness 212 of the body of rod 20 front end newels 21 is when injection finishes, and the rear portion of the blocking runner 711 that can stretch through makes medicament be pushed in the needle stand 70 by stick harness 212, to reduce the residual quantity of medicament, avoid waste.

In addition, this body of rod 20 forms one at newel 21 rear appropriate locations and has larger-diameter embedding edge 22, the internal diameter edge appropriate location of cylindrical shell 10 close open rearward end then forms one relatively just can be for the caulking groove 112 of embedding edge 22 buckles, make the body of rod 20 pull back receipts before break away from cylindrical shell 10, can be by the caulking groove 112 clips location of embedding edge 22 with cylindrical shell 10, and design guarantees that syringe needle 30 accurately reclaims the location in proper order, can establish a folding ditch 23 by the body of rod 20 appropriate locations more simultaneously, make this body of rod 20 be converted into two sections at folding ditch 23 places, with the minimizing salvage material, and be beneficial to recovery.

It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although this utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1, a kind of safety syringe-drum of improvement, its formation comprise that one has room and stretches in the cylindrical shell room for the body of rod of pushing medicament, a syringe needle and a needle guard that is sheathed on the syringe needle outside that is positioned barrel front end for the cylindrical shell that holds medicament, an appearance; Wherein this lever front end is connected with a cock body, push medicament in the just salable room that is slidedly arranged on cylindrical shell, it is characterized in that: described lever front end projection has a newel that supplies cock body to set up, in addition, this inner barrel front end is installed with a clasp that supplies newel to stretch through and fasten, and this clasp front end slide fastener is positioned with one for the localized needle stand of syringe needle.

2, the safety syringe-drum of improvement according to claim 1, it is characterized in that: described lever front end newel bottom be concaved with one can nested fixedly cock body caulking groove, the newel front end then is extended with a needle stand and push the stick harness of medicament of being used to stretch through, and stick harness rear end external diameter is formed with one and can colludes edge with the overhead kick shape that clasp fastens mutually.

3, the safety syringe-drum of improvement according to claim 1 and 2, it is characterized in that: described clasp has the bigger end of a diameter, and be extended with the less teat of a diameter, and this teat front end external diameter edge convexes with edge clipping, fovea centralis is provided with a tank, tank central authorities are through with a bellmouth, the clasp end is set and is positioned in the locating slot that barrel front end internal diameter edge ring establishes, the groove bottom of tank is after body of rod newel stick harness stretches through, it colludes edge and is snapped in the bottom land edge, and clasp end and teat joint form the thin-walled of bent distortion.

4, safety syringe-drum according to claim 3 a described improvement, it is characterized in that: described needle stand one end central part projection has the reference column of a tool runner, and be formed with a clip annular groove in the reference column periphery, make the sheathed respectively location that is snapped in of syringe needle reach on the clip annular groove in vain, the needle stand other end then is formed with a slippage annular groove, and in the notch inner wall edge convex with one the button edge, the teat of this clasp just can be slidedly arranged in the slippage annular groove of needle stand, the slippage backward of the edge clipping of teat front end, the mutual buckle of button edge with the slippage annular groove, narrowing seat is drawn in drive, and the runner rear end stretches through mutually to seal with body of rod newel and supports.

5, the safety syringe-drum of improvement according to claim 1 is characterized in that: described lever front end external diameter edge and the internal diameter edge of the nearly rear end of cylindrical shell be formed with respectively can relative buckle embedding edge and caulking groove.

6, the safety syringe-drum of improvement according to claim 1 is characterized in that: described lever front end is arranged with a folding ditch.