Liquid injection/the sampling device that needle stand can bounce back automatically
Technical field
The utility model is relevant with safety injector, is meant the liquid injection/sampling device that a kind of needle stand can bounce back automatically especially.
Background technology
General syringe or hemostix have plenty of with finger with its needle stand or syringe needle dismounting, to reach the purpose of replacing; Yet this mode may cause the user to be subjected to pricking wound easily.In addition, the mode that has some to have the replacing syringe needle of convenience again, as utilize a control gear that this syringe needle control card is ended and come off, to reach the purpose of replacing, the shortcoming of this mode is that its syringe needle must be with the installing of container, otherwise also has same problem.
Moreover general project organization can't satisfy the demand of syringe and hemostix usually simultaneously, so also inequality in its design, and causes problems such as various complexity such as design and processing.
Because of must be again with manual manipulation, therefore cause the inconvenience in the use, perhaps the operator has forgotten to pull back, and may produce dangerous situation, thereby remains the syringe of the formula of withdrawing automatically and produce.
The inventor is because above-mentioned disappearance, therefore pains research and development the utility model needle stand liquid injection/sampling device that can bounce back automatically in addition.
The utility model content
Fundamental purpose of the present utility model, promptly at the liquid injection/sampling device that provides a kind of needle stand to bounce back automatically, it can make syringe needle bounce back automatically and have security in the use.
A time purpose of the present utility model, more at the liquid injection/sampling device that provides a kind of needle stand to bounce back automatically, whether movable it can conveniently control needle stand positioning action.
A purpose more of the present utility model, at the liquid injection/sampling device that provides a kind of needle stand to bounce back automatically, it can make its designs simplification again and can reach normal start again.
For reaching aforementioned purpose, liquid injection/the sampling device that needle stand that the utility model provides can bounce back automatically, it can be established for connecing of a syringe needle, this device includes: a syringe has the stack shell of a straight-tube shape, it has provided a containing hole, one collude calvus be elastically deformable be arranged in this stack shell, each is formed with a latch to inner edge in colluding calvus; It is rounded that one application cylinder has a ring body, and it is provided with an axial trepanning is the stack shell that can be sheathed on this syringe, and this application cylinder is to operate the calvus that colludes that makes the restriction or do not limit this syringe; One needle stand has a pedestal can fill in slippage in the containing hole of being located at this syringe, and a stop ring ditch is located at this pedestal periphery and established by the calvus card that colludes of this syringe; One elasticity support member is to be installed between this syringe and this needle stand, but in this application cylinder do not limit this syringe collude calvus the time pushing tow this needle stand to the containing hole displacement of needle stand.
Best, this plugs part is to can be a push rod, and can make this device become a syringe.
Moreover this plugs part is to can be a heparin tube, and can make this device become a hemostix.
Liquid injection/the sampling device that a kind of needle stand can bounce back automatically, it can be established for connecing of a syringe needle, and this device includes: a syringe, stack shell with a straight-tube shape, it has provided a containing hole, one collude calvus be elastically deformable be arranged in this stack shell, be formed with a latch in colluding calvus to inner edge; One application cylinder, it is rounded to have a ring body, and it is provided with an axial trepanning is the stack shell that can be sheathed on this syringe, and this application cylinder is to operate the calvus that colludes that makes the restriction or do not limit this syringe; One needle stand has a pedestal and can fill in slippage in the containing hole of being located at this syringe, and a stop ring ditch is located at this pedestal periphery and established by the calvus card that colludes of this syringe; One elasticity support member is to be installed between this syringe and this needle stand, but in this application cylinder do not limit this syringe collude calvus the time pushing tow this needle stand to the containing hole displacement of needle stand.
Liquid injection/the sampling device that described needle stand can bounce back automatically more includes the movable containing hole that is inserted in this syringe of a push rod, uses and can be a syringe.
Liquid injection/the sampling device that described needle stand can bounce back automatically, this push rod have more a needle stand containing hole, can be ccontaining for the retraction of needle stand and syringe needle.
Liquid injection/the sampling device that described needle stand can bounce back automatically, this needle stand has more one or two syringe needle, uses and can become a hemostix.
Liquid injection/the sampling device that described needle stand can bounce back automatically, this needle stand have more a falling stop portion, can not drop out for being limited to the needle stand position-arresting groove of this syringe.
Liquid injection/the sampling device that described needle stand can bounce back automatically, this application cylinder are the structures for a rear pull type.
Liquid injection/the sampling device that described needle stand can bounce back automatically, this application cylinder are the structures for a revolving ring type.
Liquid injection/the sampling device that described needle stand can bounce back automatically, this needle stand have the needle stand position-arresting part that one position-arresting part can be limited to this syringe.
Liquid injection/the sampling device that described needle stand can bounce back automatically, syringe have more an elastic component portion of setting firmly can be for the precalculated position that sets firmly this elastic component.
Liquid injection/the sampling device that described needle stand can bounce back automatically, the plug of this push rod is an opening of being located at its needle stand containing hole, and can be subjected to the bursting of this needle stand.
The description of drawings explanation
Fig. 1 is the exploded perspective view of the utility model one preferred embodiment;
Fig. 2 is the side-looking combination section of the utility model one preferred embodiment;
Fig. 3 is that the push rod that is same as last figure retracts constitutional diagram;
Fig. 4 is that the push rod that is same as last figure pushes away only constitutional diagram forward;
Fig. 5 is that the application cylinder that is same as last figure pulls back constitutional diagram;
Fig. 6 is the automatic resilience constitutional diagram of needle stand that is same as last figure;
Fig. 7 is the exploded perspective view of another preferred embodiment of the utility model;
Fig. 8 is the side-looking combination section of another preferred embodiment of the utility model;
Fig. 9 is that the heparin tube that is same as last figure pushes away only constitutional diagram forward;
Figure 10 is that the application cylinder that is same as last figure pulls back constitutional diagram relatively;
Figure 11 is the automatic resilience state of needle stand that is same as last figure, shows that heparin tube does not take out as yet;
Figure 12 is the automatic resilience state of needle stand that is same as last figure, shows that heparin tube takes out;
Three-dimensional cutaway view when Figure 13 is the 12 figure state shows the state that its needle stand engages;
Figure 14 is the utility model exploded perspective view of a preferred embodiment again.
Embodiment
For more understanding characteristics of the present utility model and effect, lift following examples now and cooperate graphic being described as follows, wherein:
See also Fig. 1 to Fig. 6, liquid injection/the sampling device that the utility model one preferred embodiment needle stand can bounce back automatically, be to be a syringe, can be for the sleeve of a syringe needle 80, this syringe includes: a syringe 10, stack shell 11 with a straight-tube shape, it has provided a containing hole 12, two collude calvus 13 is formed by other direction of syringe needle 80 side direction, this respectively colludes calvus 13 is elastically deformables, be formed with 14, one butted 15 inner edges that just are formed at this each latch 14 of a latch in respectively colluding calvus 13 to inner edge, two hole clippings 16 are located on the stack shell 11 relatively that this respectively colludes the end in addition of calvus 13.One application cylinder 20, it is rounded to have a ring body 21, it is provided with an axial trepanning 22 is the stack shells 11 that can be sheathed on this syringe 10, one restriction edge 23 is formed at front end, one pulling edge 24 is formed at this ring body 21 peripheries, be arranged in this ring body 21, this each fastener 25 also inwardly is formed with the hole clipping 16 that a stops 26 can be arranged in this syringe 10 with its deformable end two fasteners, 25 elastically deformables.
One needle stand 30, have a pedestal 31 be provided with outer circular groove 32 can for a sealing ring 70 sheathed, and can fill in slippage in the containing hole 12 of being located at this syringe 10, one butted 33, one stop ring ditch 37 is located at these pedestal 31 peripheries and established by calvus 13 cards that collude of this syringe 10, and its front end is to connect in every way for this syringe needle 80 to establish.
One compression spring 40 is aforesaid this elasticity support member, is butted 15 and butted 33 of this needle stand 30 that are installed in this syringe 10, but makes containing hole 12 displacements of this needle stand 30 of pushing tow to syringe 10.
One push rod 50, have a shaft 51 and be the stock body, one supports cover portion 52 is located at the precalculated position, and a solid piston part 53 is arranged in its front end, the leading portion that one needle stand containing hole 55 is formed at this shaft 51 supplies being installed with of this needle stand 30, and a push-and-pull portion 57 is located at the pushing and pressing usefulness of its rear end for finger.
One plug 60, it is the solid piston part 53 of being located at this push rod 50, having one first cock body, 61 its periphery bulge loops and be containing hole 12, one second cock bodys 62 that are sealed in this syringe 10 is needle stand containing hole 55 openings that are arranged in this first cock body 61 separably and are covered on this push rod 50.
The operation start situation of relevant present embodiment is described as follows: as shown in Figure 2, being the position that its combination is finished, promptly is the assembled state before the utility model does not use, and is the user mode that it extracts soup, perhaps is the user mode of its injection; At this moment, its push rod 50 retracted to extract soup, as shown in Figure 3.
At this moment, this needle stand 30 promptly must end fixing state for card, that is cooperate shown in Figure 2 again, the restriction edge 23 of this application cylinder 20 is that the calvus 13 that colludes that is sheathed on this syringe 10 makes this collude calvus 13 can't to open distortion outward, and then make its each latch 14 keep being arranged in the stop ring ditch 37 of this needle stand 30, this needle stand 30 promptly can't displacement, has the stable and security when using to keep not rocking.
In addition, as shown in Figure 4, be the constitutional diagram that the utility model injection ends, wherein, this plug 60 is to push against on earth, second cock body 62 of this plug 60 is inserted by the pedestal 31 of this needle stand 30 promptly to support and is separated with this first cock body 61 and to break.And as shown in Figure 5, retract this application cylinder 20 make no longer be limited to this syringe 10 collude calvus 13 peripheries, and this needle stand 30 promptly is subjected to the elastic force of this compression spring 40 with its resilience, this syringe 10 collude calvus 13 then distortion make its latch 14 break away from the stop ring ditch 37 of needle stands 30, this needle stand 30 rebounds in the needle stand containing hole 55 of this push rod 50, promptly as shown in Figure 6.
Push rod among the above embodiment of the utility model, its structure that also can be general pulling-back type is not shown in the figures, and the endoporus that does not have leading portion is the push rod of directly pulling back backward for ccontaining needle stand, this needle stand 30 can directly recoil to the containing hole 12 of this syringe 10, and can reach the purpose of this utility model equally.
Another preferred embodiment of the present utility model, shown in Fig. 7 to figure, it is not include a push rod, but plugs use for a heparin tube 50A, therefore promptly constitute a hemostix for the usefulness of taking blood, wherein: its structure substantially is identical with last embodiment, includes a syringe 10A equally, an application cylinder 20A, one needle stand 30A, its difference has again and does not include push rod, and the structure of this needle stand 30A is inequality, and cooperates a heparin tube 50A to use in addition.
This syringe 10A has more two needle stand position-arresting groove 18A to be opened in its stack shell precalculated position.The fastener 25A of this application cylinder 20A is that shape is comparatively little, and can make this heparin tube 50A be easy to wear and do not have the situation of interference.
This needle stand 30A has a pedestal 31A, difference is that its syringe needle 80A is that one is installed in this pedestal 31A, and its be formed with one first 81A of pin portion and one second 82A of pin portion corresponding respectively export-oriented and in side direction, and a 38A of falling stop portion is forked confession and is limited to the two needle stand position-arresting groove 18A of this syringe 10A and can drop out.
Embodiment of the present utility model, this application cylinder do not limit the structure of using rear pull type among aforementioned two embodiment, and it also can use the structure of revolving ring type; As shown in figure 14; Wherein, this application cylinder is to change a pivoted housing 20B into and rotatable operation, and it is provided with equally escapes the calvus that colludes that the hole can correspond to this syringe and make outwards elastic deformation, and reaches the purpose of this utility model and effect equally.By above each embodiment explanation, it is as follows to conclude characteristics of the present utility model:
1. the utility model needle stand liquid injection/sampling device that can bounce back automatically, whether movable it utilize application cylinder control needle stand positioning action, and the elasticity support member supports to arrive in the effect of needle stand, can automatically this needle stand be recoiled in the syringe.
2. the utility model needle stand liquid injection/sampling device that can bounce back automatically, its elasticity support member cooperates the combination and the card of application cylinder and syringe to establish needle stand, can make its designs simplification again and can reach normal start.