CN203556016U - Needle cap for injector and injector assembly - Google Patents

Abstract

The utility model discloses a needle cap for an injector and an injector assembly with the needle cap. The needle cap comprises a cap body with an opening, an extrusion part is arranged on the outer wall of the cap body, a sliding chute which axially stretches is formed in the outer wall of the cap body, one end of the extrusion part is connected to the cap body, and the other end of the extrusion part moves along the sliding chute. The extrusion part is provided with a pressing part which moves in the radial direction of the cap body, and the pressing part is provided with a released position and a pressing position; at the released position, the other end of the cap body is away from the opening, and the pressing part is away from the cap body; at the pressing position, the pressing part is close to the cap body, and the other end of the extrusion part is close to the opening and abuts against the injector. By the arrangement of the extrusion part on the outer wall of the cap body, when the needle cap needs to retract from the injector, a user only needs to apply radial pressing force to the pressing part of the extrusion part, the extrusion part can apply axial extrusion force to the injector, and then the needle cap safely and conveniently retracts from the injector through opposite acting force of the injector on the needle cap.

Description

Pin cap and injector assembly for syringe

Technical field

This utility model relates to medical instruments field, particularly, relates to the injector assembly of a kind of pin cap for syringe and this pin cap of use.

Background technology

Syringe is widely used at medical field as common medical apparatus and instruments, and wherein, under off working state, the syringe needle of syringe is arranged with pin cap outward conventionally can syringe needle being sealed, to prevent the accidental injury to user.In prior art, the pin cap of syringe adopts close-fitting mode to be enclosed within the syringe needle root of syringe conventionally, needs in use user with hands, pin cap to be exited from syringe.

Yet, user is when being used syringe and biological fluid extracting pipe, especially nurse needs one hand to operate syringe conventionally, and this just requires nurse's finger coordinate and firmly appropriately could smoothly pin cap be exited, if any accidentally causing syringe needle to accidentally injure the problem of hand.Therefore, provide a kind of technology that can remove pin cap to there is positive effect safe ready.

Utility model content

An object of the present utility model is to provide a kind of pin cap for syringe, and this pin cap can exit from syringe safe ready.

Another object of the present utility model is to provide a kind of injector assembly, the pin cap that this injector assembly is used this utility model to provide.

To achieve these goals, according to an aspect of the present utility model, a kind of pin cap for syringe is provided, comprise the cap body with opening, on the outer wall of described cap body, be provided with extrusion, and on this outer wall, be formed with the axially extended chute along described cap body, one end of described extrusion is connected on described cap body, the other end moves along described chute, wherein said extrusion has the press section moving radially along described cap body, described press section has release position and pressing position, in described release position, the described other end of described cap body is away from described opening, and described press section is away from described cap body, at described pressing position, described press section approaches described cap body, and the described other end of described extrusion approaches described opening and supports described syringe.

Preferably, described extrusion comprises the first bar and the second bar, the first end of described the first bar is hinged on described cap body, the second end of described the first bar and the first end of described the second bar are hinged, the second end of described the second bar slides along described chute, and described press section is formed on the pin joint place between described the first bar and described the second bar.

Preferably, the described first end of described the first bar is hinged in the end of described chute, and at described pressing position, described the first bar and described the second bar are all contained in described chute.

Preferably, described chute comprises the groove section of the sidewall that connects described cap body, and described cap body inside is provided for supporting the impeller of described syringe, and described second end of described the second bar is hinged through impeller described in described groove Duan Bingyu.

Preferably, described impeller is circulus, and the inwall of the outer wall of this circulus and described cap body is fitted slidably, and in described release position, groove section described in the closed front of described impeller.

Preferably, described extrusion and described chute are two covers the both sides that are arranged on symmetrically described cap body, and described the second end that is positioned at described second bar of both sides is connected with described impeller respectively.

Preferably, described pin cap also comprises the elastic component towards extrusion described in described release position bias voltage.

Preferably, described pin cap also comprises that this elastic component is the extension spring that is positioned at the below of described press section towards the elastic component of extrusion described in described release position bias voltage, and the two ends of this extension spring connect respectively described the first bar and described the second bar.

Preferably, described extrusion and described chute are two covers the both sides that are arranged on symmetrically described cap body.

According on the other hand of the present utility model, a kind of injector assembly is provided, comprise syringe and pin cap, the pin cap that described pin cap provides for this utility model.

Pass through technique scheme, by being arranged on the extrusion on the external wall of cap, needs by pin cap when syringe exits, the pressing force that only needs user to apply radial direction to the press section of extrusion can apply the extruding force on axial direction to syringe by the other end of extrusion, thus make by syringe to the counteracting force of pin cap by pin cap safe ready from syringe, exit.

Other feature and advantage of the present utility model partly in detail are described the specific embodiment subsequently.

Accompanying drawing explanation

Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for description, is used from explanation this utility model, but does not form restriction of the present utility model with the specific embodiment one below.In the accompanying drawings:

Fig. 1 is the side-looking structural representation (band broken section) of the injector assembly that provides of this utility model preferred implementation;

Fig. 2 is the plan structure schematic diagram of the pin cap that provides of this utility model preferred implementation;

Fig. 3 is the side-looking structural representation (band broken section) of the biological fluid extracting pipe that provides of this utility model the first embodiment;

Fig. 4 is the side-looking structural representation (band broken section) of the biological fluid extracting pipe that provides of this utility model the second embodiment;

Fig. 5 is the plan structure schematic diagram of the biological fluid extracting pipe that provides of this utility model the first embodiment.

Description of reference numerals

1 cap body 2,7 chutes

3,8 extrusion 4 syringes

5,9 impeller 6 bodys

10 pipe caps

11,61 opening 21,71 groove sections

22,72 groove section 31,81 first bars

32,82 second bar 33,83 elastic components

41 syringe needles

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation this utility model, is not limited to this utility model.

In this utility model, in the situation that not doing contrary explanation, the noun of locality of use is " axially " as " axially, radially " normally take the length direction of pin cap, body, perpendicular to this axial direction, is " radially ", in addition, " inside and outside " typically refer to respective objects profile inside and outside.It should be noted that, these nouns of locality are only for illustrating that this utility model is not limited to this utility model.

It should be noted that, adopt in this utility model be contemplated that the cap body 1 of pin cap to exit required axially firmly the changing into of syringe 4 user is more maneuverable radially exerted oneself.Wherein related mechanism is preferably the mechanism that is similar to slider-crank mechanism; therefore; this mechanism can also depart from for the pipe cap 10 of biological fluid extracting pipe the operation of body 6; and the feed liquor syringe needle of infusion pipeline exits operation of transfusion bag etc.; therefore for convenience of description in utility model; the pin cap and the biological fluid extracting pipe that this utility model are provided at this illustrate simultaneously; be applied in each feature on these two kinds of devices combination replacement or be used in combination mutually, for these distortion, all drop in protection domain of the present utility model.

First as Fig. 1 and Fig. 2, this utility model provides a kind of pin cap for syringe, syringe 4 comprises syringe body and is connected to the syringe needle 41 on syringe body, syringe needle 41 is socketed in the exit of syringe body conventionally by its root, wherein pin cap comprises the cap body 1 with opening 11, in order to guarantee the sealing of syringe needle 41, in use, the syringe needle of syringe 4 41 is penetrated in cap body 1 by opening 11, and just the root of syringe needle 41 is filled in opening 11, to play the sealing function to syringe needle 41.Wherein, in order to realize the purpose of this utility model, on the outer wall of the cap body 1 in this utility model, extrusion 3 is set, and on this outer wall, be formed with the axially extended chute 2 along cap body 1, one end of extrusion 3 is connected on cap body 1, the other end moves along chute 2, wherein extrusion 3 has the press section a moving radially along cap body 1, press section a has release position and pressing position, in release position, the other end of cap body 1 is away from opening 11, and press section a is away from cap body 1, at pressing position, press section a approaches cap body 1, and the other end of extrusion 3 approaches opening 11 and supports syringe 4, so that cap body 1 exits the syringe needle 41 of syringe 4 smoothly.

Therefore, can pass through by press section a being applied to radial force the other end axial compression syringe 4 of extrusion 3, can be particularly the root lugs position of syringe needle 11, thereby by the counteracting force of 4 pairs of cap bodies 1 of syringe, make smoothly cap body 1 overcome with the frictional force of syringe 4 and axially exit syringe 4.This process only needs user to apply radially pressing force to cap body 1, thereby avoids exerting oneself problem excessive and the needle sting hand that causes.And in the preferred implementation providing at this utility model, extrusion 3 and chute 21 are two covers the both sides that are arranged on symmetrically cap body 2, such configuration is particularly useful for nurse and carries out one-handed performance, only need thumb and forefinger jointly press section a to be carried out to the operation of exiting that pressing operation can complete pin cap simultaneously, practical.

It should be noted that, this structure and mode of operation are equally applicable to the biological fluid extracting pipe that this utility model provides, blood taking tube for example, thus pipe cap 10 can be exited from body 6 safe ready.In addition, the embodiment that can complete the above-mentioned design of this utility model has multiple, for example the concrete structure of extrusion 3, its other end are supported structure of syringe etc., this utility model is in this introduction preferred implementation wherein for convenience of description, this preferred implementation, only for this utility model is described, is not limited to this utility model.

As shown in Figures 1 to 5, the extrusion 3 that this utility model is applied in pin cap is preferably the structure that is similar to slider-crank mechanism, particularly, extrusion 3 comprises the first bar 31 and the second bar 32, the first end of the first bar 31 is hinged on cap body 1, the second end of the first bar 31 and the first end of the second bar 32 are hinged, and the second end of the second bar 32 slides along chute 2, and press section a is formed on the pin joint place between the first bar 31 and the second bar 32.Therefore, by cooperatively interacting between two bars, can realize radial force is converted into axial force, by the second end of the second bar 32, support syringe 4.Wherein rod member mentioned herein can also can have any shape for being not limited to straight-bar the rod members such as bow of design, in addition in this utility model mentioned hinged be connection means known in this field, specifically can carry out the hinged of two adjacent objects by pin, for this type of mode, not do too much and repeat.In addition, the structure of the direction of other change power well known in the art also can be used in this utility model, for this mode of texturing, all should drop in protection domain of the present utility model.

Wherein, the set-up mode of the chute 2 in this utility model also has multiple, wherein in preferred implementation of the present utility model, the first end of the first bar 31 is hinged in the end of chute 2, at pressing position, the first bar 31 and the second bar 32 are all contained in chute 2, the length that is chute 2 at least should equal the first bar 31 and the length of the second bar 32 when linear position, and its degree of depth at least should equal the thickness of two bars, thereby facilitate cap body 1 the depositing of non-working condition, and can not occupy a large amount of memory spaces because of the existence of extrusion 3.

In addition, the structure of chute is also relevant with the abutting structure of the described other end of extrusion 3, first in the pin cap providing in this utility model preferred implementation, as depicted in figs. 1 and 2, chute 2 comprises the groove section 21 that connects cap body 1 sidewall, cap body 2 inside are provided for supporting the impeller 5 of syringe 4, and the second end of the second bar 32 is through groove section 21 hinged with impeller 5.The described other end that is extrusion 3 is the promotion to syringe 4 realizing by being positioned at the impeller 5 of cap body 1 inside.This mainly has to being applicable to syringe 4 structure that enters cap body 1, is in particular the root projection of the syringe needle 41 of syringe 4.In addition, shown in the accompanying drawing 4 of the second embodiment of the biological fluid extracting pipe that can provide with reference to this utility model, chute 2 can also not need to form groove section 21, and directly on the outer wall of cap body 1 or body 6, form groove structure, and 5 of impellers need on outer wall to move along chute 2 radial protrusion of the syringe 4 that can promote to be positioned at pin cap outside.For this mode, should drop in protection domain of the present utility model equally.

In the built-in mode of impeller 5, illustrate this utility model below, wherein, preferably, built-in impeller 5 is circulus, the inwall of the outer wall of this circulus and cap body 2 is fitted slidably, and because impeller 5 is the circuluses with hollow channel, can not hinder syringe needle 41 to insert.And due to the existence of groove section 21, preferably, and in release position, the outer wall of impeller 5, in inner side sealing groove section 21, therefore can guarantee at non-working condition the sealing of syringe needle.Wherein when impeller 5 is circulus, preferably, extrusion 3 and chute 21 are two covers be arranged on symmetrically the both sides of cap body 2, and the second end that is positioned at the second bar 32 of both sides is connected with impeller 5 respectively, thereby reposefully pin cap are exited by the common effect in both sides.In addition, in other embodiments, impeller 5 can also not be complete ring-shaped article, and be only designed to part circulus, now in order to guarantee the Stable sliding of impeller 5, can can embed the chute of impeller 5 in the sidewall design of cap body 1, thereby when user carries out pressing operation to press section a, guarantee the successfully axially-movable of impeller 5.

In preferred implementation of the present utility model, due to the two-stage structure that chute 2 is designed to be interconnected, comprise the groove section 21 for the slip of the described other end of extrusion 3, and at pressing position, hold the groove section 22 of the rod member of extrusion 3, thereby facilitate the preservation of pin cap.

In preferred implementation of the present utility model, for extrusion 3 can be set back automatically, preferably, pin cap also comprises the elastic component 33 making towards described release position bias voltage extrusion 3.Therefore, when user unclamps after extrusion 3, under the effect of elastic component 33, extrusion 3 can automatically restore to initial release position, thereby conveniently exits operation next time.Particularly, this elastic component 33 is for being positioned at the extension spring of the below of press section a, and the two ends of this extension spring connect respectively the first bar 31 and the second bar 32.To realize the first bar 31 by the elastic pulling force of extension spring and the second bar 32 returns to release position.In addition; this elastic component 33 can also be the stage clip that is positioned at press section a below, and this stage clip one end is against press section a, and the other end is against cap body 1; this also can realize the effect that extrusion 3 is automatically restored to release position, for this type of distortion, all should drop in protection domain of the present utility model.

Above-mentioned article the pin cap that provides of this utility model, except pin cap itself, apply it to the injector assembly forming on syringe 4 and drop on equally in protection domain of the present utility model.In addition, it should be noted that, the biological fluid extracting pipe that this utility model provides can be provided by identical feature or the characteristics combination of pin cap providing with this utility model, for fear of repetition, simply introduce the biological fluid extracting pipe that this utility model provides below, the other end that the difference is that its extrusion 8 is for against pipe cap 10.

As shown in Figures 3 to 5, this utility model provides a kind of biological fluid extracting pipe, blood taking tube for example, it comprises having the body 6 of opening 61 and the pipe cap 10 of sealing opening 61, and on the outer wall of body 6, be provided with the identical extrusion 8 of extrusion 3 structures in the pin cap providing with this utility model, and on the outer wall of body 6, be also formed with the axially extended chute 7 along body 6, chute 2 structures in the pin cap that this chute 7 provides with this utility model are identical, therefore, similarly, one end of extrusion 8 is connected on body 6, the other end moves along chute 7, wherein extrusion 8 has the press section b moving radially along body 6, press section b has release position and pressing position, in release position, the other end of body 6 is away from opening 61, and press section b is away from body 6, at pressing position, press section b approaches body 6, and the other end of extrusion 3 approaches opening 61 and supports pipe cap 10, thereby can exit pipe cap 10 safe ready.

Wherein in the first embodiment and the second embodiment, preferably, extrusion 8 comprises the first bar 81 and the second bar 82, the first end of the first bar 81 is hinged on body 6, the second end of the first bar 81 and the first end of the second bar 82 are hinged, the second end of the second bar 82 slides along chute 7, and press section b is formed on the pin joint place between the first bar 81 and the second bar 82.And preferably, the first end of the first bar 81 is hinged in the end of chute 7, at pressing position, the first bar 81 and the second bar 82 are all contained in chute 7, to facilitate depositing of body 6.

As shown in Figure 3 and Figure 5, in the first embodiment, chute 7 comprises groove section 71 and the groove section 72 being interconnected, groove section 71 connects the sidewall of body 6, and body 6 inside are provided for supporting the impeller 9 of pipe cap 10, and the second end of the second bar 82 is hinged through groove section 71 and impeller 9.More preferably, described impeller 9 is circulus, and the inwall of the outer wall of this circulus and described body 6 is fitted slidably, and in release position, the closed front groove section 71 of impeller 9, to guarantee the sealing of body fluid.Now, when pipe cap 10 plugs are on opening 61, be that pipe cap 10 is while having the axial projection of filling in body 6, preferably, extrusion 8 and chute 71 are two covers the both sides that are arranged on symmetrically body 6, the second end of the second bar 82 that is positioned at both sides is hinged with impeller 9 respectively, so that the stable of pipe cap 10 exits.Therefore, symmetrical two cover extrusions 8 and chute 7 are set and can be convenient to exiting of the pipe cap of plug on opening 61.

And in the second embodiment, as shown in Figure 4, pipe cap 10 is hinged in first side of end of body 6, this pipe cap 10 is the form of renovating, now preferably extrusion 8 and chute 7 for a set of and be arranged on body 6 in contrast to the second side of the pipe cap 10 of the first side.And due to the pipe cap 10 of the form of renovating have extend into body 6 inside axial projection seldom, therefore for the ease of promoting this pipe cap 10, preferably, impeller 9 is arranged on the outside of body 6, and endwisely slip along body 6, opening this pipe cap of renovating form 10 by supporting the radially projection of pipe cap 10 easily.Wherein as shown in Figure 4, chute 7 forms groove structure, and in groove structure, hold slidably the mode of impeller 9, also can fill in the structure of the biological fluid extracting pipe on body 6 for pipe cap 10, two cover extrusions 8, chute 7 and impeller 9 are now preferably set, so that the exiting of pipe cap 10.In the pin cap providing at this utility model in addition, which can be suitable for equally.

In addition, preferably, biological fluid extracting pipe also comprises the elastic component 83 towards release position bias voltage extrusion 8.Elastic component 33 in the pin cap that the structure of this elastic component 83 also provides with this utility model is identical.Particularly, this elastic component 83 is for being positioned at the extension spring of the below of press section b, and the two ends of this extension spring connect respectively the first bar 81 and the second bar 82.Thereby after pipe cap 10 is opened, under the effect of elastic component 83, extrusion 8 automatically restores to release position, in order to using next time.

To sum up, the pin cap that this utility model provides and the pipe cap of biological fluid extracting pipe all can be realized and exit operation safe ready, have stronger practicality and promotional value.

Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; this utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.

It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, this utility model is to the explanation no longer separately of various possible compound modes.

In addition, between various embodiment of the present utility model, also can carry out combination in any, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (10)

1. the pin cap for syringe, comprise the there is opening cap body (1) of (11), it is characterized in that, on the outer wall of described cap body (1), be provided with extrusion (3), and on this outer wall, be formed with the axially extended chute (2) along described cap body (1), one end of described extrusion (3) is connected on described cap body (1), the other end is mobile along described chute (2), wherein said extrusion (3) has the press section moving radially (a) along described cap body (1), (a) has release position and pressing position in described press section, in described release position, the described other end of described cap body (1) is away from described opening (11), and described press section (a) is away from described cap body (1), at described pressing position, described press section (a) approaches described cap body (1), and the described other end of described extrusion (3) approaches described opening (11) and supports described syringe (4).

2. pin cap according to claim 1, it is characterized in that, described extrusion (3) comprises the first bar (31) and the second bar (32), the first end of described the first bar (31) is hinged on described cap body (1), the first end of the second end of described the first bar (31) and described the second bar (32) is hinged, the second end of described the second bar (32) slides along described chute (2), and described press section (a) is formed on the pin joint place between described the first bar (31) and described the second bar (32).

3. pin cap according to claim 2, it is characterized in that, the described first end of described the first bar (31) is hinged in the end of described chute (2), and at described pressing position, described the first bar (31) and described the second bar (32) are all contained in described chute (2).

4. pin cap according to claim 2, it is characterized in that, described chute (2) comprises the groove section (21) of the sidewall that connects described cap body (1), described cap body (2) inside is provided for supporting the impeller (5) of described syringe (4), and described second end of described the second bar (32) is through described groove section (21) hinged with described impeller (5).

5. pin cap according to claim 4, it is characterized in that, described impeller (5) is circulus, and the inwall of the outer wall of this circulus and described cap body (2) is fitted slidably, and in described release position, groove section (21) described in the closed front of described impeller (5).

6. according to the pin cap of claim 4 or 5, it is characterized in that, described extrusion (3) and described chute (21) are two covers the both sides that are arranged on symmetrically described cap body (2), and described the second end that is positioned at described second bar (32) of both sides is connected with described impeller (5) respectively.

7. pin cap according to claim 1, is characterized in that, described pin cap also comprises the elastic component (33) towards extrusion (3) described in described release position bias voltage.

8. pin cap according to claim 2, it is characterized in that, described pin cap also comprises the elastic component (33) towards extrusion (3) described in described release position bias voltage, this elastic component (33) is for being positioned at the extension spring of the below of described press section (a), and the two ends of this extension spring connect respectively described the first bar (31) and described the second bar (32).

9. pin cap according to claim 1, is characterized in that, described extrusion (3) and described chute (21) are two covers the both sides that are arranged on symmetrically described cap body (2).

10. an injector assembly, comprises syringe (4) and pin cap, it is characterized in that, described pin cap is according to the pin cap described in any one in claim 1-9.

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