CN208405597U - Disposable two-piece type syringe - Google Patents

Abstract

The utility model relates to the field of medical instrument technology, specifically a kind of disposable two-piece type syringe, including the push rod being moved forward and backward in syringe barrel chamber, the push rod front end is equipped with round push plate, the diameter of push plate matches with the aperture of syringe, the push plate edge is disposed at least one indentation, the inner wall of the indentation and syringe is slidably matched along the raised line composition that tube length direction is arranged, the push rod, which closes on, is equipped with breakpoint easy to break at round push plate, and push rod fractures when push rod is rotated using its own as axis, two-piece type syringe provided by the utility model, the marginal position of push plate is equipped with indentation, indentation is slidably matched with the raised line being arranged on syringe inner wall, improve lubricity when push rod is moved forward and backward in syringe in two-piece type syringe, simultaneously, push rod is equipped with breakpoint easy to break, it is needing to report When useless, push rod is screwed, indentation and raised line limit, force mandrel to fracture, realize the self-destruction of syringe, simple and convenient.

Description

Disposable two-piece type syringe

Technical field

The utility model relates to the field of medical instrument technology, specifically a kind of disposable two-piece type injection Device.

Background technique

Syringe is a kind of common medical instruments, is divided into three-member type and two-piece type, the main structure of three-member type syringe For core bar, rubber plug and housing, but when needing to inject oiliness drug due to clinical application, there is certain probability to make medical fluid and rubber plug rubber The phenomenon that glue reacts and leads to patient of hypersensitivity has developed the syringe of two-piece type thus, i.e., eliminates in main structure Rubber plug, only core bar and housing, replace rubber plug is the spherical nose that core bar front end is arranged in, which needs and syringe inner wall It is fitted close, it is ensured that air-tightness.Due to having lacked rubber plug, the lubricity of two-piece type syringe is slightly worse than three-member type syringe, makes It is slightly poor that used time pushes away medicine sense.

Investigated according to the World Health Organization with regard to reusing the ratio of syringe or needle all over the world, African Territories, China, Because of poor and material want, long-term someone recycles Biohazard Waste regeneration and uses for the country such as India, and syringe is caused to repeat abuse ratio Rate is up to 50%, even reusing syringe in developed countries such as Europe and being also up to 15%, at present in national anthem syringe really There are serious the problem of reusing, currently, common disposable sterilized injector is after use, structure and shape do not have Any change is easy to be reused by people, causes to infect.A kind of facilitate self-destruction, disposable two-piece type note for this purpose, designing Emitter becomes those skilled in the art's technical problem urgently to be solved.

Utility model content

For the problems of the prior art, facilitate self-destruction and easy to use the purpose of this utility model is to provide a kind of Two-piece type syringe improves the lubricity of two-piece type syringe.

To achieve the goals above, a kind of the technical solution adopted in the utility model are as follows: disposable two-piece type note Emitter, including the push rod being moved forward and backward in syringe barrel chamber, the push rod front end is equipped with round push plate, the diameter and needle of push plate The aperture of cylinder matches, and the push plate edge is disposed at least one indentation, the inner wall edge of the indentation and syringe The raised line composition of tube length direction arrangement is slidably matched, and the push rod, which closes on, is equipped with breakpoint easy to break at round push plate, and in push rod Push rod fractures when being rotated using its own as axis.

Preferably, the push rod includes the mandrel along tube length direction arrangement, the front end of mandrel is connected with circle push plate, after End is connected with push handle, and the mandrel has radially extended at least two blocks of flabellum plates, the flabellum plate include long and short blade and The crosspoint of long and short blade is the breakpoint easy to break of mandrel.

Preferably, the push handle is discoid, and the side edge of disk is serrated or the push handle is prism Shape.

Preferably, the bevel edge of the long and short blade adjacent is at opposite diagonally disposed.

Preferably, the push plate edge arranged for interval is there are three indentation, the indentation with it is right on syringe inner wall The raised line composition that should be arranged is slidably matched.

Preferably, the indentation is dovetail channel-shaped.

Preferably, the push rod is made of medical grade PE material.

Compared with prior art, the marginal position of two-piece type syringe provided by the utility model, push plate is equipped with indentation, Indentation is slidably matched with the raised line being arranged on syringe inner wall, improves push rod front and back in syringe in two-piece type syringe and moves Lubricity when dynamic, meanwhile, push rod provided by the utility model is equipped with breakpoint easy to break and screws push rod when needing to scrap, recessed The portion of lacking and raised line limit, and force mandrel to fracture, realize the self-destruction of syringe, simple and convenient.

Detailed description of the invention

Fig. 1 is the cross-sectional view of disposable two-piece type syringe provided by the utility model；

Fig. 2 is the schematic diagram of push rod and push plate；

Fig. 3 be Fig. 2 in A-A to cross-sectional view；

Figure label explanation: 10- syringe, 11- raised line, 20- push rod, 21- push plate, 211- indentation, 22- breakpoint easy to break, 23- mandrel, 24- push handle, 25- flabellum plate, 251- linear leaf, 252- short blade.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and furthers elucidate the utility model.

As shown in Figure 1, 2, the utility model provides a kind of disposable two-piece type syringe, is included in syringe 10 The push rod 20 being moved forward and backward in barrel chamber, 20 front end of push rod are equipped with round push plate 21, diameter and the syringe 10 of push plate 21 Aperture matches, and 21 edge of push plate is disposed at least one indentation 211, the indentation 211 and syringe 10 Inner wall is slidably matched along the composition of raised line 11 that tube length direction is arranged, the push rod 20, which closes on, is equipped with frangibility at round push plate 21 Point 22, and push rod 20 fractures when push rod 20 is rotated using its own as axis.

The working principle of the utility model are as follows: the edge of the round push plate 21 is equipped with indentation 211, and described is recessed It lacks the composition of raised line 11 being arranged on portion 211 and the inner wall of syringe 10 to be slidably matched, push plate 21 is moved forward and backward in syringe 10 with convex Item 11 is guiding, improves existing two-piece type syringe because of the reduction of lubricity caused by lacking rubber plug, is supplied to medical matters people Member preferably pushes away medicine feel；The push rod 20 is equipped with breakpoint 22 easy to break, when needing to carry out scrapping processing to syringe, rotation Push rod 20 is twisted, indentation 211 and raised line 11 at this time is in limit state, and it screws push rod 20 and is broken to mandrel from frangibility point, Because push rod 20 is broken, can not be used again naturally.Two-piece type syringe provided by the utility model, structure is simple, user Just, the work load of medical worker is alleviated, the self-destruction of syringe is quickly and easily realized, syringe is avoided and is repeated by people The problem of utilizing, leading to infection.

Further, as shown in connection with fig. 3, according to the utility model, the push rod 20 includes arranging along tube length direction Mandrel 23, the front end of mandrel 23 is connected with round push plate 21, rear end is connected with push handle 24, and the mandrel 23 has radially extended At least two blocks of flabellum plates 25, the flabellum plate 25 include the crosspoint of long and short blade 251,252 and long and short blade 251,252 For the breakpoint easy to break 22 of mandrel 23, that is to say, that in addition to the mandrel 23 at 22 position of breakpoint easy to break is without the flabellum plate 25 extended, During screwing push rod 20, which is easier to be broken off.

Further, in order to facilitate the operation of medical worker, the push handle 24 is discoid, and the side edge of disk is in Zigzag, frictional force or the push handle 24 when can so increase torquing operations are prism-shaped, the push handle of the unique texture 24 not only facilitate torquing operations, but also are easier that medical worker is allowed to recognize the syringe to be type self-destroyed.

Further, the bevel edge of the long and short blade 251,252 adjacents is at opposite diagonally disposed, in other words, The structure of concane gap is formed on push rod 20, it is ensured that mandrel 23 is easier to be broken off when screwing.

Setting not special requirement of the utility model for the quantity of the indentation 211 in push plate 21, in general, If the quantity setting of indentation 211 is excessive, the quantity of matched raised line is necessarily increased, and necessarily causes syringe 10 that can contain medicine The reduction of liquid product；Preferably, there are three indentations 211 for the 21 edge arranged for interval of push plate, in this way, push plate may be implemented 21 back-and-forth motions stable in syringe 10, the indentation 211 are constituted with the raised line 11 of corresponding arrangement on 10 inner wall of syringe It is slidably matched.

Further, indentation 211 described in the utility model is dovetail channel-shaped.

Further, push rod 20 described in the utility model is made of medical grade PE material.

The characteristics of basic principles and main features and the utility model of the utility model have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these changes and improvements are both fallen in the range of claimed invention.This is practical new The claimed range of type is defined by the appending claims and its equivalent thereof.

Claims (7)

1. a kind of disposable two-piece type syringe, is included in the push rod (20) being moved forward and backward in syringe (10) barrel chamber, Be characterized in that: push rod (20) front end is equipped with round push plate (21), the aperture phase of the diameter and syringe (10) of push plate (21) It coincide, described push plate (21) edge is disposed at least one indentation (211), the indentation (211) and syringe (10) Inner wall arranged along tube length direction raised line (11) composition be slidably matched, the push rod (20), which closes at round push plate (21), to be set Have breakpoint easy to break (22), and push rod (20) fractures when push rod (20) is rotated using its own as axis.

2. disposable two-piece type syringe according to claim 1, it is characterised in that: push rod (20) packet Include the mandrel (23) along tube length direction arrangement, the front end of mandrel (23) is connected with circle push plate (21), rear end and push handle (24) phase Even, the mandrel (23) has radially extended at least two pieces of flabellum plates (25), and the flabellum plate (25) includes long and short blade The crosspoint of (251,252) and long and short blade (251,252) is the breakpoint easy to break (22) of mandrel (23).

3. disposable two-piece type syringe according to claim 2, it is characterised in that: the push handle (24) is It is discoid, and the side edge of disk is serrated or the push handle (24) is prism-shaped.

4. disposable two-piece type syringe according to claim 2, it is characterised in that: the long and short blade The bevel edge of (251,252) adjacent is at opposite diagonally disposed.

5. disposable two-piece type syringe according to claim 1, it is characterised in that: described push plate (21) side It is intermarginal that every arrangement, there are three indentation (211), the raised lines of the indentation (211) and corresponding arrangement on syringe (10) inner wall (11) it constitutes and is slidably matched.

6. disposable two-piece type syringe according to claim 1 or 5, it is characterised in that: the indentation It (211) is dovetail channel-shaped.

7. disposable two-piece type syringe according to claim 1, it is characterised in that: the push rod (20) is adopted It is made of medical grade PE material.