CN200942225Y

CN200942225Y - Safety syringe improved structure

Info

Publication number: CN200942225Y
Application number: CN 200620124184
Authority: CN
Inventors: 蔡锦绸
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-10
Filing date: 2006-08-10
Publication date: 2007-09-05
Anticipated expiration: 2016-08-10

Abstract

The utility model is an improved structure of a security syringe. The utility model comprises a syringe; a needle seat. The needle seat group is arranged at the marginal hole of the end of the syringe, the positioning circular rim of the needle seat is positioned at the positioning circular groove in the front end hole of the syringe, and the a buckling hole is formed at the inner end of the seat needle seat; an injection pushing rod, which is penetrated in the syringe. At least a group of axial track grooves are arranged on the rod body of the injection pushing rod; and a reverse drawing positioning element, which is arranged in the front end hole of the injection pushing rod. A clipping head part formed by a plurality of elastic prong hooks is formed at the front end, the clipping head part is clipped with the clipping hole of the needle seat, and elastic hooks of the corresponding number of the track grooves of the injection pushing rod are arranged on the circumference of the other end of the reverse drawing positioning element. After the injection is finished, and the injection pushing rod is pulled out of the syringe for a certain distance, the injection pushing rod is pushed inside the syringe again, and the needle can be concealed into the injection pushing rod.

Description

The structural improvement of safety syringe-drum

Technical field

This utility model relates to a kind of structure of safety syringe-drum.

Background technology

Human in recent years keeping pouring in because of various communicate illnesss, caused human fear as frightening communicate illnesss such as AIDS and various hepatitis, and the in a single day infected safety that mostly will endanger with life of these a little fearful communicate illnesss, even yield to no remedy (as AIDS) at all, and the route of infection of more described disease are except the infection of body fluid, and the infection of blood (as blood transfusion) also is a main path.Just because of this, great majority directly with have this most direct and the closest people of a little communicate illnesss, except patient's family members, the medical personnel that promptly look after the more described patient of medical treatment have not belonged to, usually can hear after certain medical personnel helps certain sufferer to inject in the past, the needle sting that careless hand has been injected, thereby suffered from the disease identical with sufferer, therefore, present most medical personnel fear quite that all this kind situation occurs on one's body, and then influence medical personnel's work morale, and therefore plant cause, the design of safety syringe-drum is promptly arranged.

And the safety syringe-drum of existing patent design at present is of a great variety, it mostly is after injection finishes, the injection putter of pulling back is taken in syringe needle in the syringe, and described injection putter fractureed to separate by set broken part abandon, though this kind design tool safe effect, it all must carry out action that injection putter is fractureed after per injection finishes, cause the inconvenience in the use, and the injection putter after fractureing separates with syringe and abandons, and then the volume of garbage is significantly increased.

This utility model designer is because above-mentioned existing safety syringe-drum design still has the problem of practical difficulty in use, expect the design that an improvement can be provided, to solve this a little problems, be to grind think of, the real work of design with great concentration, it is engaged in the specialized technical knowledge and the practical experience of relevant equipment design, production and marketing for many years and grinds the achievement that the think of designing institute gets to combine collection, work out the structural improvement of a kind of safety syringe-drum of this utility model eventually, to provide safer and to use easily.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is: a kind of structural improvement of safety syringe-drum is provided, makes it safer, more convenient.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of structural improvement of safety syringe-drum is characterized in that: it comprises:

One syringe forms a peristoma in the syringe end, in the syringe of nearly described peristoma, is formed with positioning ring groove;

One needle holder, one end forms a group cover end for group cover syringe needle, periphery in needle holder, then be provided with locating ring edge and leak-proof gasket, the needle holder group is gone in the peristoma hole, aforementioned syringe end, and the locating ring edge of needle holder is positioned the positioning ring groove place in the syringe front aperture, forms a snapping hole at the place, the inner of described needle holder;

One injection putter is into hollow form, wears group in aforementioned syringe, on the body of rod of described injection putter, is provided with at least one group and is axial rail groove; With

One keeper of pulling back, be that group is located in the injection putter front aperture, at its front end is to be formed with a discount portion that is made of most elasticity claw hooks, the snapping hole snapping of described discount portion and aforementioned needle holder, other end periphery at the described keeper of pulling back, be provided with the elastic hook that is relative populations with the set rail groove of injection putter, and every group of elastic hook all passes rail groove set on the injection putter and described elastic hook end, and to expose injection putter outer and produce sliding-contact with the syringe inwall.

On the described keeper of pulling back, be provided with a locating ring protuberance,, respectively be provided with a location annular groove at forward and backward two places of injection putter endoporus.

Set each rail groove outer rim all is formed with one group of floor on injection putter.

Establish a broken part at the end of injection putter.

For achieving the above object, the technical solution adopted in the utility model also comprises:

One injection putter is to wear group in aforementioned syringe, and described injection putter is constituted by being axial rib more than at least one, and is provided with a hollow bulb in described injection putter;

One keeper of pulling back, be that group is located in the injection putter front aperture, at its front end is to be formed with a discount portion that is made of most elasticity claw hooks, the snapping hole snapping of described discount portion and aforementioned needle holder, other end periphery at the described keeper of pulling back, be provided with at least more than one elastic hook, and every group of elastic hook passes all between rib set on the aforementioned injection putter and to expose aforementioned injection putter outer and produce sliding-contact with the syringe inwall in described elastic hook end.

On injection putter, outside set each rail groove, be formed with one group of floor.

Establish a broken part at the end of injection putter.

The periphery of the keeper of pulling back be provided with aforementioned injection putter on set rib be corresponding groove, the rib when the described keeper group of pulling back is gone into aforementioned injection putter endoporus on it embeds in each groove.

The external diameter of the described keeper of pulling back is the aperture less than the injection putter endoporus.

Advantage of the present utility model:

This utility model needle cylinder injection finish injection putter pulled back stretch out the syringe certain-length after, again injection putter is pushed in syringe, syringe needle can be placed and conceal in the injection putter, and the injection putter that need not fracture, to reach easy and simple to handle and purpose fast.

The injection putter that need not fracture when this utility model needle cylinder injection finishes is captured in the syringe injection putter and syringe needle simultaneously, and then reaches the volume that does not increase Biohazard Waste, and the expense of handling Biohazard Waste is significantly reduced.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the present utility model;

Cut-away view when Fig. 2 is this utility model injection putter and syringe combination;

To be this utility model with injection putter pull back Fig. 3 draws in needle holder in the syringe and make the elastic hook of the keeper of pulling back skid off the solid embodiment cut-away view when the syringe end aperture outer rim place of the outer and hook of syringe;

Fig. 4 is that shown in Figure 3 injection putter is passed enters in the syringe and then make syringe needle and injection putter reaches embodiment cut-away view when concealing in the syringe simultaneously;

Fig. 5 is shown in Figure 1ly establishing the rail groove that is axial more than at least one group and is being provided with another embodiment three-dimensional exploded view of elastic hook corresponding more than at least one group at the described keeper periphery of pulling back on the injection putter;

Fig. 6 is that this utility model is being provided with one group of embodiment three-dimensional exploded view that is axial rail groove and is formed with one group of floor outside each rail groove on the injection putter;

Fig. 7-the 1st shown in Figure 6ly is being provided with rail groove that is axial more than a group and the embodiment three-dimensional exploded view that is formed with one group of floor outside each rail groove on the injection putter;

Fig. 7-the 2nd, the embodiment partial cutaway diagrammatic sketch of injection putter shown in Fig. 7-1;

Fig. 8 is that this utility model is being provided with the embodiment three-dimensional exploded view of the rib that is axial more than at least one on the injection putter

Cut-away view when Fig. 9 is injection putter shown in Figure 8 and syringe combination;

Figure 10 is that shown in Figure 9 injection putter is pulled back drawn in needle holder in the syringe and made the elastic hook of the keeper of pulling back skid off the solid embodiment cut-away view when the syringe end aperture outer rim place of the outer and hook of syringe;

Figure 11 is that shown in Figure 10 injection putter is passed enters in the syringe and then make syringe needle and injection putter reaches embodiment cut-away view when concealing in the syringe simultaneously;

Figure 12 is that this utility model is provided with one group of embodiment three-dimensional exploded view again that is axial rectangular slotted eye on the body of rod of injection putter;

Cut-away view when Figure 13 is injection putter shown in Figure 12 and syringe combination;

Figure 14 is that shown in Figure 13 injection putter is pulled back drawn in needle holder in the syringe and made solid the passing in syringe end aperture outer rim and with injection putter of the elastic hook hook of the keeper of pulling back enter in the syringe and then make syringe needle and injection putter reaches embodiment cut-away view when concealing in the syringe simultaneously;

Figure 15 is shown in Figure 12 at an embodiment three-dimensional exploded view again that is provided with the rectangular slotted eye that is axial more than a group on the body of rod of injection putter.

Description of reference numerals: 1-syringe; 11,412,511,611-positioning ring groove; The 12-outer rim; The 2-needle holder; 21-locating ring protuberance; 22,434-leak-proof gasket; 23-snapping hole; The 3-syringe needle; 4,5,6-injection putter; 41, the 61-body of rod; 411-rail groove; 413,512,612-broken part; The 42-floor; 43, the 63-keeper of pulling back; 431,631-elasticity claw hook; 432,632-elastic hook; 433,633-locating ring protuberance; The 435-groove; The 44-piston head; The 51-rib; The 52-hollow bulb; The rectangular slotted eye of 62-.

The specific embodiment

See also Fig. 1 and shown in Figure 2, this utility model mainly is in syringe 1, be provided with an injection putter 4 that is hollow rod shape, on the body of rod 41 of described injection putter 4, be provided with at least one group and be axial rail groove 411, in injection putter 4 front ends, group is provided with a front end tool elasticity claw hook 431 and makes its elasticity claw hook 431 pass the pull back keeper 43 of cover group at injection putter 4 front end piston heads 44, on the described keeper 43 of pulling back, be provided with a locating ring protuberance 433 that matches with the set positioning ring groove 412 of injection putter 4 front end endoporus, group is provided with leak-proof gasket 434 to reach the effect of leakproof simultaneously, other end periphery at the described keeper 43 of pulling back, be provided with at least two elastic hook 432, every group of elastic hook all passes rail groove 411 set and corresponding on the injection putter 4 and makes elastic hook 432 ends expose injection putter 4 and produce sliding-contact with syringe 1 inwall outward, in syringe 1 front aperture, be formed with positioning ring groove 11, being provided with a periphery tool locating ring protuberance 21 in described place group can be for the needle holder 2 of cover group syringe needle 3 with leak-proof gasket 22, and make the set locating ring protuberance 21 of needle holder 2 peripheries be positioned to be formed with in syringe 1 front aperture positioning ring groove 11 places, and make needle holder 2 be positioned the front end of syringe 1, place, the inner in described needle holder 2 forms the bonded snapping of elasticity claw hook 431 an embedding groups hole 23 for keeper 43 front ends of pulling back, when push injection push rod 4 makes it be advanced into the bottom in syringe 1 when injection, described injection putter 4 ends pull back that 431 of the elasticity claw hooks of keeper 43 front ends enter in the snapping hole 23 of needle holder 2 and the solid one of hook, draw injection putter 4 and move this moment outside syringe 1, needle holder 2 and syringe needle 3 will be drawn in the lump move and conceal in the syringe 1, continuation with injection putter 4 outside syringe 1, draw move and make the elastic hook 432 of the keeper 43 of pulling back skid off outside the syringe 1 and hook solid at syringe 1 end aperture outer rim 12 places, therefore the described keeper 43 of pulling back was located by fastener and can't be pushed again and move up in the syringe 1 (as shown in Figure 3) this moment, again injection putter 4 is passed and entered in the syringe 1, and then syringe needle 3 and injection putter 4 are reached conceal simultaneously in the syringe, and the described injection putter 4 that need not fracture again can reach purpose of safety (as shown in Figure 4), outside injection putter 4, can establish floor 42 in addition, and this utility model can be established the rail groove 411 that is axial more than at least one group at injection putter 4, and be provided with more than at least one group corresponding elastic hook 432 (as shown in Figure 5) at described keeper 43 peripheries of pulling back, wherein on the described keeper 43 of pulling back, be provided with a locating ring protuberance 433, before injection putter 4 endoporus, locate, be provided with a location annular groove 412, and can make the described keeper of pulling back be located at injection putter 4 front aperture Nei Shida location purpose for 43 groups.

See also Fig. 6, Fig. 7-1 with shown in Fig. 7-2, this utility model is on injection putter 4, be provided with at least one group and be axial rail groove 411, and outside each rail groove 411, be formed with one group of floor 42, the gap that relies on floor 42 to reduce injection putter 4 and syringe 1 endoporus except that tool make injection putter 4 when passing more firm, also therefore increased the degree of depth of each rail groove 411, and made 432 ones of the elastic hooks of the keeper 43 of pulling back to obtain more firm holding state.

See also Fig. 8 again, Fig. 9, Figure 10 and shown in Figure 11, be another embodiment of the present utility model, it mainly is on injection putter 5, be provided with the rib 51 that is axial more than at least one, and in described injection putter 5, be a hollow bulb 52, in described hollow bulb 52, group is established a front end tool elasticity claw hook 431 and is made its elasticity claw hook 431 pass the pull back keeper 43 of cover group at injection putter 5 front end piston heads 44, at the other end periphery of keeper 43 of pulling back, be provided with at least two elastic hook 432, each elastic hook 432 all passes 51 on per two ribs on aforementioned injection putter 5, when push injection push rod 5 makes it be advanced into the bottom in syringe 1 when injection, 431 of the elasticity claw hooks of described keeper 43 front ends of pulling back are entered in the snapping hole 23 of needle holder 2 and the solid one of hook, draw injection putter 5 and move this moment outside syringe 1, needle holder 2 and syringe needle 3 will be drawn in the lump move and conceal in the syringe 1, continuation with injection putter 5 outside syringe 1, draw move and make the elastic hook 432 of the keeper 43 of pulling back skid off outside the syringe 1 and hook solid at syringe 1 end aperture outer rim 12 places, therefore the described keeper 43 of pulling back was located by fastener and can't be pushed again and move up in the syringe 1 this moment, again injection putter 5 is passed and entered in the syringe 1, and then syringe needle 3 and injection putter 5 are reached conceal simultaneously in the syringe 1, and the described injection putter 5 that need not fracture again can reach purpose of safety, moreover, described periphery of pulling back keeper 43 be provided with injection putter 5 on set rib 51 be corresponding groove 435, and the rib 51 on it is embedded in each groove 435 when making 43 groups of the keepers of pulling back go into injection putter 5 endoporus, and make the keeper 43 of pulling back in injection putter 5, to produce more stable moving, in addition, also can establish a broken part 512 at the end of injection putter 5, injection putter 5 ends can be fractureed, and described broken part 512 volumes are little, also can not increase the volume of garbage after abandoning, wherein on the described keeper 43 of pulling back, be provided with a locating ring protuberance 433, in injection putter 5 hollow bulbs 52 before each rib 51, two inner edge places, back, respectively be provided with a location annular groove 511, and can make described 43 groups of the keepers of pulling back be located in injection putter 5 front aperture with when keeper 43 hooks of pulling back solid at syringe 1 end aperture outer rim, 12 places and injection putter 5 passing when entering in the syringe 1, before all will making the described keeper 43 locating ring protuberances 433 of pulling back be positioned injection putter 5 hollow bulbs 52 interior each rib 51 respectively, annular groove 511 places, position are set in two inner edge places, back, and reach the location purpose.

See also Figure 12 at last, Figure 13 and Figure 14, be an embodiment more of the present utility model, it mainly is on the body of rod 61 of injection putter 6, be provided with the rectangular slotted eye 62 that is axial more than a group, and be a hollow bulb in the described injection putter 6, in injection putter 6 described hollow bulbs, group is established a front end tool elasticity claw hook 631 and is made its elasticity claw hook 631 pass the pull back keeper 63 of cover group at injection putter 6 front end piston heads 44, at the other end periphery of keeper 63 of pulling back, be provided with one group of elastic hook 632, and in each the rectangular slotted eye 62 that each elastic hook 632 is all embedded be engaged on the aforementioned injection putter 6 and elastic hook 632 can be slided by rectangular within it slotted eye 62, when push injection push rod 6 makes it be advanced into the bottom in syringe 1 when injection, 631 of the elasticity claw hooks of described keeper 63 front ends of pulling back are entered in the snapping hole 23 of needle holder 2 and the solid one of hook, draw injection putter 6 and move this moment outside syringe 1, needle holder 2 and syringe needle 3 will be drawn in the lump move and conceal in the syringe 1, continuation with injection putter 6 outside syringe 1, draw move and make the elastic hook 632 of the keeper 63 of pulling back skid off outside the syringe 1 and hook solid at syringe 1 end aperture outer rim 12 places, therefore the described keeper 63 of pulling back was located by fastener and can't be pushed again and move up in the syringe 1 this moment, again injection putter 6 is passed and entered in the syringe 1, and then syringe needle 3 and injection putter 6 are reached conceal simultaneously in the syringe, and the described injection putter 6 that need not fracture again can reach purpose of safety, in addition, also can establish a broken part 612 at the end of injection putter 6, injection putter 6 ends can be fractureed, and on the body of rod 61 of injection putter 6, can comply with the required rectangular slotted eye 62 that is axial more than a group that is provided with, and at the other end periphery of keeper 63 of pulling back, be provided with one group of above elastic hook 632 as shown in figure 15, wherein on the described keeper 63 of pulling back, be provided with a locating ring protuberance 633, before in injection putter 6 hollow bulbs, two inner edge places, back, respectively be provided with a location annular groove 611, and can make described 63 groups of the keepers of pulling back be located in injection putter 6 front aperture with when keeper 63 hooks of pulling back solid at syringe 1 end aperture outer rim, 12 places and injection putter 6 passing when entering in the syringe 1, before all will making the described keeper 63 locating ring protuberances 633 of pulling back be positioned in injection putter 6 hollow bulbs respectively, annular groove 611 places, position are set in two inner edge places, back, and reach the location purpose.

In sum, this utility model tool easy to use, can significantly dwindle effects such as volume after discarded and the splendid safety of tool.

More than explanation is just illustrative for this utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.

Claims

1. the structural improvement of a safety syringe-drum, it is characterized in that: it comprises:

2. according to the structural improvement of the described safety syringe-drum of claim 1, it is characterized in that: on the described keeper of pulling back, be provided with a locating ring protuberance,, respectively be provided with a location annular groove at forward and backward two places of injection putter endoporus.

3. according to the structural improvement of the described safety syringe-drum of claim 1, it is characterized in that: set each rail groove outer rim on described injection putter all is formed with one group of floor.

4. according to the structural improvement of the described safety syringe-drum of claim 1, it is characterized in that: establish a broken part at the end of described injection putter.

5. the structural improvement of a safety syringe-drum, it is characterized in that: it comprises:

6. according to the structural improvement of the described safety syringe-drum of claim 5, it is characterized in that: on the described keeper of pulling back, be provided with a locating ring protuberance,, respectively be provided with a location annular groove at forward and backward two places of injection putter endoporus.

7. according to the structural improvement of the described safety syringe-drum of claim 5, it is characterized in that: on described injection putter, outside set each rail groove, be formed with one group of floor.

8. according to the structural improvement of the described safety syringe-drum of claim 5, it is characterized in that: establish a broken part at the end of described injection putter.

9. according to the structural improvement of the described safety syringe-drum of claim 5, it is characterized in that: the periphery of the described keeper of pulling back be provided with aforementioned injection putter on set rib be corresponding groove, the rib when the described keeper group of pulling back is gone into aforementioned injection putter endoporus on it embeds in each groove.

10. according to the structural improvement of the described safety syringe-drum of claim 5, it is characterized in that: the external diameter of the described keeper of pulling back is the aperture less than the injection putter endoporus.