CN2226947Y

CN2226947Y - Control device for intravenous drop injector

Info

Publication number: CN2226947Y
Application number: CN 95216442
Authority: CN
Inventors: 方正国
Original assignee: HONG JINHE
Current assignee: HONG JINHE
Priority date: 1995-07-19
Filing date: 1995-07-19
Publication date: 1996-05-15
Anticipated expiration: 2005-07-19

Abstract

The utility model relates to a control device for intravenous drip injector, which is characterized in that the utility model is composed of a control rod and a diaphragming sheet. A separation distance exists between the diaphragming sheet and the bottom of the control rod. The top end of the control rod is provided with an empty groove which leads the control rod flexibly float in injection in a drip barrel. Residual injection can be respectively stored in the empty groove and the end face of the diaphragming sheet when the injection is almost exhausted. The downward pressing force of the control rod and the diaphragming sheet is increased to ensure that the diaphragming sheet can seal the output port of the drip barrel and can play the role of safety.

Description

The control device of dropping syringe

This utility model relates to a kind of control device of dropping syringe.

At present, the dropping syringe of using in the hospital is not generally controlled injection device automatically, promptly can not block or seal the delivery outlet of drop tube safely; There is a kind of improved dropping syringe to come out, its structure is to insert a floating drum 2 that can float in drop tube 1 in drop tube 1 inside (Fig. 1), as the control device of choke point drip path, when will using up, the injection in dropping syringe can stop injection voluntarily.But the problem that this spar structures exists is: the weight of floating drum is difficult to determine: if when floating drum weight is too heavy, be unfavorable in the drop tube, floating, can descend, the output of blocking-up drop tube because of buoyancy is not enough, cause and retain too much injection in the drop tube, and the waste of formation medicinal liquid; If the floating drum shortage in weight can make its suppressing action power lighten, the perforation that causes floating drum can't seal pad, influence be the effect of blocking-up injection automatically.

The purpose of this utility model is the control device that a kind of simple in structure, dropping syringe that barrier effect is good will be provided.

The purpose of this utility model is achieved in that the control device of dropping syringe is can insert the barrier flaps that the control rod and in the drop tube of dropping syringe is connected with below control rod by one to form; There is dead slot on the control rod top, and the control rod bottom upwards has connecting hole, and connecting hole is not communicated with dead slot; Barrier flaps is the sheet of a film like, and there is the connecting rod that protrudes out in its end face central authorities, and connecting rod is mounted in the connecting hole of control rod, and barrier flaps and control rod end have spacing.Control rod has and is convexly equipped with the several balance ribs that are symmetry shape on its external annulus.Another kind of structure is the hollow cylinder that can insert the drop tube inside of dropping syringe by one, and a control rod and that can float in hollow cylinder is connected with the barrier flaps below control rod; The hollow top is opening-like, can overlap a ring cowling that through hole arranged, and there is a cone-shaped plug its bottom, one duct that is connected with cylindrical shell is arranged in the plug, its inner bottom surface is the convergence mouth, and has several openings on the ring wall of hollow cylinder Lower Half, and opening connects the inside to hollow cylinder; There is dead slot on the control rod top, and the control rod bottom upwards has connecting hole, and connecting hole is not communicated with dead slot; Barrier flaps is a film like lamellar body, and its end face central authorities set firmly a connecting rod that protrudes out, and connecting rod is mounted in the connecting hole of control rod, between barrier flaps and control rod end spacing is arranged.Have on the control rod and be convexly equipped with the several balance ribs that on its external annulus, are symmetry shape.

Owing to adopt such scheme, this utility model by control rod dead slot and barrier flaps and control rod end between retain the downforce that has spacing to make barrier flaps and improve, automatically block airtight effect thereby can promote, and cooperate a hollow cylinder that cone-shaped plug arranged again, make control device directly be installed in the drop tube dropping syringe of applicable different size.

Below by accompanying drawing and embodiment this utility model is further described.

Fig. 1 is known dropping syringe structure chart.

Fig. 2 is the cutaway view that this utility model embodiment 1 uses.

Fig. 3 is Fig. 2 III-III line cutaway view.

Fig. 4 is the user mode cutaway view of this utility model embodiment 1 sealing output.

Cutaway view when Fig. 5 is this utility model embodiment 2 uses.

Fig. 6 is the user mode cutaway view of this utility model embodiment 2 sealing outputs.

Among the figure: 3,3A control device, 4 drop buckets, 31 control rods, 32 barrier flaps, 33 spacings, 34 ring cowlings, 35 cylindrical shells, 40 deliveries, 41 tapers convergence mouth, 341,42 passages, 44 outlet tubes, 45 end caps, 311 dead slots, 312 connecting holes, 313 balance ribs, 321 connecting rods, 351 openings, 352 convergence mouths, 353 through holes, 354 plugs, 441 arrival ends.

Referring to Fig. 2; The control device 3 of this utility model embodiment 1 includes the control rod 31 that can insert in drop tube 4, and a barrier flaps 32 that is connected with below control rod 31; The top of control rod 31 has a dead slot 311 downwards, and upwards opens a connecting hole 312 in its bottom, and connecting hole 312 is not connected state with dead slot 311; On the excellent body external annulus of control rod 31, be convexly equipped with four balance ribs 313 that are symmetry shape.

Shown in Fig. 2,3; In the time of in control rod 31 places drop tube 4, the protruding end of balance rib 313 all can littlely be touched in drop tube 4 and be floated; Barrier flaps 32 is a flexible film like lamellar body, set firmly a connecting rod that protrudes out 321 in its end face central authorities, can be mounted in the connecting hole 312 of control rod 31, behind the build-in, leave a spacing 33 between barrier flaps 32 and control rod 31 ends, the external diameter of barrier flaps 32 is greater than the diameter of control rod 31, but less than the distance between the protruding end of symmetrical balance rib 313, in order to avoid influence the unsteady smoothness of control rod 31.

As shown in Figure 2; There is a delivery 40 bottom of drop tube 4, it can be connected on the outlet tube 44, and the passage 42 in the delivery 40 is communicated on the outlet tube 44, and the passage 42 in the delivery 40 is communicated on the outlet tube 44, and the passage 42 in the delivery 40 is communicated in the duct 441 of outlet tube 44, thereby cause injection in the drop tube 4 can flow into via the passage 42 of delivery 40 in the duct 441 of outlet tubes 44 and export, simultaneously, the inner bottom surface of drop tube 4 forms taper convergence mouth 41, makes injection output from the passage 42 of delivery 40 swimmingly; During assembling, the control rod 31 and the barrier flaps 32 that are combined into are directly put into drop tube 4 get final product, make barrier flaps 32 be positioned at the below of control rod 31, seal with end cap 45.Inject injection in drop tube 4 after, control rod upwards floats, and drives barrier flaps 32 and upwards move together, and leaves the taper convergence mouthfuls 41 of drop tube 4 bottom surfaces, makes injection 441 outputs from the duct; When injection will be used up, control rod 31 is being with barrier flaps 32 to move down, when buoyancy that injection produced during less than the point of the injection weight in the weight of control rod 31 and the dead slot 311 that is stored in control rod 31 and gravity, control rod 31 can be with barrier flaps 32 to move down rapidly, up to bumping resistance in the taper of drop tube 4 convergence mouthfuls 41 and stop, still remaining in this moment drop tube 4 have a small amount of injection, in their spacings 33 between barrier flaps 32 and control rod 31 ends (Fig. 4).This moment, barrier flaps 32 was controlled the suppressing action power of excellent 31 own wts, add simultaneously the liquid of the injection that stores in the dead slot 311 and remaining injection etc. heavy and downforce, thereby make barrier flaps 32 closely connected fully at taper convergence mouthful 41 places with good characteristics of flexibility film like, reach and stop the effect of injecting automatically.

As shown in Figure 5 among the embodiment 2; The structure of control device 3A is same as embodiment 1 substantially; Difference is to add one can supply control rod 31 and barrier flaps 32 to put into its hollow cylinder 35, its top is opening-like, there is a cone-shaped plug 354 bottom, have in the plug 354 one with the through hole road 353 of cylindrical shell 35 internal communication, there is a convergence mouth 352 bottom surface in cylindrical shell 35, and on the outer wall of cylindrical shell Lower Half, having most openings 351, opening 351 is communicated to the inside of cylindrical shell 35, again; Control rod 31 can sheathed one has the ring cowling 34 of through hole 341 at the opening of cylinder top, so that can not break away from the inside of cylindrical shell 35.

When assembling is used, can be with the plug 354 of cylindrical shell 35 directly via the inside intercalation of drop tube 4 arrival end 441 at output channel 44, and the through hole road 353 of plug 354 is communicated with outlet tube 44, again end cap 45 is enclosed in admittedly the opening of drop tube 4.

As shown in Figure 6; When storing in control rod 31 dead slots the summation of 311 injection weight, control rod can be with barrier flaps 32 to move down rapidly to the buoyancy that injection produced in the cylindrical shell 35 less than the deadweight of control rod 31, and mouthful 352 places stop in convergence.The effect that adds a cylindrical shell is to borrow its cone-shaped plug, and control device can directly be plugged on the outlet tube via drop tube inside, to be applicable to the dropping syringe of multiple different size size.

Claims

1, a kind of control device of dropping syringe is characterized in that it is can insert the barrier flaps that the control rod and in the drop tube of dropping syringe is connected with below control rod by one to form; There is dead slot on the control rod top, and the control rod bottom upwards has connecting hole, and connecting hole is not communicated with dead slot; Barrier flaps is the sheet of a film like, and there is the connecting rod that protrudes out in its end face central authorities, and connecting rod is mounted in the connecting hole of control rod, and barrier flaps and control rod end have spacing.

2, the control device of dropping syringe as claimed in claim 1 is characterized in that control rod has to be convexly equipped with the several balance ribs that are symmetry shape on its external annulus.

3, a kind of control device of dropping syringe is characterized in that it is the hollow cylinder that can insert the drop tube inside of dropping syringe by one, and the barrier flaps that a control rod and that can float in hollow cylinder is connected with below control rod is formed; The hollow top is opening-like, can overlap a ring cowling that through hole arranged, and there is a cone-shaped plug its bottom, one duct that is connected with cylindrical shell is arranged in the plug, its inner bottom surface is the convergence mouth, and has several openings on the ring wall of hollow cylinder Lower Half, and opening connects the inside to hollow cylinder; There is dead slot on the control rod top, and the control rod bottom upwards has connecting hole, and connecting hole is not communicated with dead slot; Barrier flaps is a film like lamellar body, and its end face central authorities set firmly a connecting rod that protrudes out, and connecting rod is mounted in the connecting hole of control rod, between barrier flaps and control rod end spacing is arranged.

4, the control device of dropping syringe as claimed in claim 3 is characterized in that having on the control rod being convexly equipped with the several balance ribs that are symmetry shape on its external annulus.