CN2039970U

CN2039970U - Intravenous drip injector

Info

Publication number: CN2039970U
Application number: CN 88220492
Authority: CN
Inventors: 方正国; 郭保富
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-26
Filing date: 1988-11-26
Publication date: 1989-06-28

Abstract

The utility model provides an improved drop syringe. The main characteristic is that the inner portion of the plugging rod of a sharp shape of the syringe is provided with two paths respectively used for conducting the air and the circulation of the medicine liquid and cooperated with the air plug ring of the plugging rod of a sharp shape to enable the pressure inside and outside the bottle to be balanced. Thus the medicine liquid can be successfully injected into a drip cylinder without using two syringe needles and water leakage. The use is safe and convenient.

Description

Intravenous drip injector

This utility model is meant a kind of exempting from two syringe needles and safe in utilization, certain dropping syringe especially about a kind of improved dropping syringe.

Dropping syringe commonly used mostly as shown in Figure 1, shown in Figure 1 is the cutaway view of known dropping syringe, mainly comprise a drop tube 2, a floating drum 3 that places drop tube 2 inside, one is arranged at the packing ring 33 that its central authorities of drop tube 2 bottoms have perforation 331,4, one of a connection tube that are arranged on drop tube 2 bottoms places the control valve 5 and in the connection tube 4 to place elements such as drop tube 2 vertical pointed inserted links 25; Have hole 251 on the inserted link 25 and be communicated in the drop tube 2 with passage 21, so that medicinal liquid can inject in the drop tube 2 thus, the front end of control valve 5 can be stretched in the packing ring 33 that places drop tube 2 ends in addition, when floating drum 3 was placed through the perforation 331 of packing ring 33 central authorities, the polymerization of the pipe 4 that can be connected was upheld action and with control valve 5 tops floating drum 3 is pushed away packing ring 33.

During use pointed inserted link 25 is inserted in the medicine bottle 6, push drop tube 2 a little, messenger drug and 6 with the pressure state change of 2 in drop tube, medicinal liquid promptly injects in the drop tube 2 via hole 251 and passage 21, floating drum 3 descends at the beginning the time, the convex body 31 of its front end penetrates the perforation 331 of packing ring 33 central authorities, when the medicinal liquid in the drop tube 2 is stored to a certain amount of and when enough buoyancy is arranged, utilize the extension polymerization action of connection tube 4 drive control valve 5 upwards pushing and withstanding floating drum 3 leave packing ring 33 and oneself float messenger drug liquid and flow into carrier pipe and inject; When medicinal liquid had soon been injected, the floating drum 3 characteristic deadend perforation 331 that the convex body 31 that makes its front end borrows floating drum 3 gravity own and packing ring 33 to oppress that descends of go ahead of the rest because of buoyancy is not enough reached certain purpose that injection circulates of closing automatically; Certainly also can utilize control valve 5 to operate once more, make the injection residual quantity flow into carrier pipe residual quantity is minimized by leaving of floating drum 3.

Though the effect of dropping syringe commonly used is remarkable, some shortcoming still sees also the assembling that Figure 3 shows that known dropping syringe and uses axonometric chart in the use.When this syringe inserts medicine bottle 6 uses,, must insert in medicine bottles 6, can make medicine bottle 6 internal and external pressure balances, and medicinal liquid is delivered in the drop tube 2 smoothly glibly by another syringe needle 7 owing to be vacuum state in the medicine bottle 6.Yet syringe needle 7 inserts and in the bottle 6 medicinal liquid injected smoothly not only to increase in the drop tube 2 operational trouble and syringe needle 7 owing to insert that the hole that can not cause medicine bottle 6 at that time is excessive to leak outside the injection in the medicine bottle 6 whereby; When air enters in the medicine bottle 6 via syringe needle 7, have influence on the safety of use if having impurity or dustiness Gao Shihui that whole medicine bottle 6 interior medicinal liquids are polluted in the air in addition.

Floating drum 3 in the Chang Yong dropping syringe in addition, its design is to establish a lamellar body 32 at convex body 31 base portions, this lamellar body 32 keeps multiple spot to contact (as shown in Figure 2 with drop tube 2 inwalls, Fig. 2 is the cutaway view of " A-A ' " line among Fig. 1), floating drum 3 convex body 31 when the not enough decline of buoyancy can accurately be penetrated in the perforation 331 of packing ring 33.But such design makes floating drum 3 " top-heavy ", though can balance when descending, but when up pushing up it, control valve 5 is easy to floating drum 3 be tilted because of the design of " top-heavy ", when descending again, floating drum 3 also just can't accurately penetrate in the perforation 331 2 sealings of drop tube, and the square moulding of lamellar body 32 also quite expends on material, simultaneously in the connection tube 4 of dropping syringe a control valve 5 must be set also and floating drum 3 can be pushed away packing ring 33, make the part assembling of drop tube 2 very complicated and make trouble.

Therefore, main purpose of the present utility model provides a kind of dropping syringe of exempting from two syringe needles, in the hope of reaching easy to operate, safe effect.

Another purpose of the present utility model provides a kind of improved dropping syringe that simply can reach automatic sealing drop tube effect again really that assembles.

This utility model is a kind of improved dropping syringe, and it mainly includes a drop tube, and its inwall appropriate location is provided with bulge loop, and described drop tube inside is divided into two intervals that communicate up and down; One floating drum places in the interval of described drop tube lower end; One connection tube is arranged at the exit of described drop tube bottom; One pointed inserted link is to be installed in the vertical porch of described drop tube; One packing ring is fixedly arranged in the bottom of described drop tube, and its centre is provided with a perforation makes the described floating drum front end convex body that is positioned at described drop tube can penetrate described perforation and the outlet that closes described drop tube; Be provided with two passages in the described pointed inserted link, and offer a running-on in described pointed inserted link base side, described running-on and with a described channel connection, utilize an air plug ring set to be loaded on the described running-on in addition again, be a film seal that can insert for syringe needle in the described pore plug ring.When desire injection drop, can puncture sealing and make air enter the gas passage that is communicated with it and enter in the medicine bottle by the pore plug ring, make the medicine bottle internal and external pressure balance, injection can be injected in the drop tube by another passage smoothly glibly, and exempts to finish above-mentioned action with two syringe needles.

Relevant this utility model is to reach technological means and the effect thereof that above-mentioned purpose adopts, and now lifts a preferred embodiment of the present utility model, and the conjunction with figs. detailed description, and other advantages of the present utility model or characteristic can obtain better understanding thus.

Shown in Figure 1 is the cutaway view of known dropping syringe;

Shown in Figure 2 is the cutaway view of " A-A ' " line among Fig. 1;

Shown in Figure 3 is the use axonometric chart of known dropping syringe;

Shown in Figure 4 is the assembled sectional view of this utility model preferred embodiment;

Shown in Figure 5 is the cutaway view of " B-B ' " line among Fig. 4;

Shown in Figure 6 is subelement front view of the present utility model;

Shown in Figure 7 is subelement cutaway view of the present utility model.

Now referring to Fig. 1, Fig. 2 and Fig. 3,2 is drop tubes among the figure, the 21st, and passage, the 25th, pointed inserted link, the 251st, hole, the 3rd, floating drum, the 31st, convex body, the 32nd, lamellar body, the 33rd, packing ring, the 331st, perforation, the 4th, connection tube, the 5th, control valve, the 6th, medicine bottle, the 7th, syringe needle.The related content front was narrated.

At first see also Fig. 4, this utility model comprises that mainly a drop tube 7, places the floating drum 6 in the drop tube 7, and the last lower periphery of floating drum 6 is provided with several raised lines 61(as shown in Figure 5).And the internal face appropriate location of drop tube 7 is provided with bulge loop 71 drop tube 7 inside is divided into two intervals that communicate up and down, the scope that moves up and down with restriction floating drum 6; Install a packing ring 30 in the bottom of drop tube 7, packing ring 30 central authorities offer a perforation, and exit, drop tube 7 lower end is equiped with connection tube 40, and connection tube 40 is to make with elastomeric material, and its lower end connects carrier pipe 50; Install a pointed inserted link 20 on the top of drop tube 7.Pointed inserted link 20 is provided with a passage 22 and hole 221, makes medicinal liquid can inject in the drop tube 7 thus; Offer running-on 21a in a side of pointed inserted link 20 bases in addition, as shown in Figure 6, this running-on 21a also is communicated with device one pore plug ring 24 on the running-on 21a with another passage 21 and hole 211 in the pointed inserted link 20, its structure mainly is can to constitute for the arc film seal 23 that syringe needle inserts by one as shown in Figure 7.

When this utility model uses at first, floating drum 6 is to descending and the convex body 62 of its front end seals up perforation 301 on the packing ring 30, pointed inserted link 20 is inserted in the medicine bottle 6, and the arcuation film seal 23 on the pore plug ring 24 used punctures, make the vacuum in the bottle communicate with a bottle outer atmosphere via hole 211 passages 21 and pore plug ring 24, thereby the bottle internal and external pressure balance then extruded joint pipe 40 the vacuum gas pressure states in the drop tube 7 are changed, medicinal liquid promptly injects in the drop tube 7 smoothly glibly via hole 221 and passage 22.When medicinal liquid is stored into a certain amount of and enough buoyancy is arranged, drip the connection tube 40 of tube 7 lower ends with the hands extruding, air in the connection tube 40 are upwards clamp-oned in the drop tube 7 and pushing and withstanding floating drum 6 leaves packing ring 30 by the extruding of finger, medicinal liquid enters connection tube 40 to carrier pipe 50 via the perforation 301 of packing ring 30 central authorities, so successfully injects.

Because lower periphery is equipped with raised line 61 on the floating drum 6, so that still maintain the axis aspect after floating drum 6 vertical motion formerly evenly.When medicinal liquid is injected when finishing gradually, floating drum can descend gradually because of buoyancy is not enough, the convex body 62 of floating drum 6 front ends penetrates the perforation 301 of packing ring 30 central authorities exactly then, and with the exit seal of drop tube 7, avoids taking place because of the intact situation that air is injected human body of injecting liquid drug.If when still having more residual liquor this moment in the drop tube 7, but extruded joint pipe 40 utilizes the extension polymerization of connection tube 40 will manage medicinal liquids in 40 and upwards pushes and make floating drum 6 leave packing ring 30, debris promptly flows in connection tube 40 carrier pipes 50 in the moment that this floating drum 6 leaves, and so can make the residual quantity of medicinal liquid be reduced to minimum level.

The utility model has following advantages in use:

(1) when fluid infusion, need not use two syringe needles can avoid liquid medicine contamination and do not have the sorrow of leakage. Utilize hole 211, passage 21 and pore plug ring 24 on the pointed inserted link 20 to replace known Another required syringe needle, not only more convenient in operation, the soup that flows into simultaneously and riddle in the passage 21 can have airfiltering effect concurrently, making gas enter medicine bottle 6 can filter earlier in that passage 21 is interior before interior, filter airborne impurity or dust and enter again in the bottle, make the soup in the medicine bottle 6 not contaminated; In addition film seal 23 its designs that are arcuation in the pore plug ring 24 make gas can by in the sealing by in the pore admission passage 21 of punctures, but the soup in the passage 21 can't leak out outside the sealing soup because oppressing this arcuation face and then more sealing pore, thereby does not have the misgivings of soup seepage.

(2) device is simple, use is certain. The utility model can be upheld the flexible pipe 40 of polymerization and need not the known control valve of installing in the front end installing one of drop tube 7; Simultaneously the set raised line of the upper lower periphery of floating drum 6 61 is more known more can reach the effect of sealing really, so the utility model is more known more simple, certain in the use at Assembly of the parts.

The utility model more simple and direct facility on making as can be known in sum, indirectly reduce manufacturing cost, more utilize simultaneously special pore and channels designs to make the drop syringe operation more convenient, and can avoid the soup in the medicine bottle to be subjected to the pollution of air more to ensure the safety of use. The above only is preferred embodiment of the present utility model, also can multiplely change being same as under the technological means of the present utility model, and all this kind variation ought to be included in the patent category of the present utility model.

Claims

1, a kind of dropping syringe mainly includes:

One drop tube, its inwall appropriate location is provided with bulge loop, and described drop tube inside is divided into two intervals that communicate up and down;

One floating drum places in the interval of described drop tube lower end.

One connection tube is arranged at the exit of described drop tube bottom;

One pointed inserted link is to be installed in the vertical porch of described drop tube;

One packing ring is fixedly arranged in the bottom of described drop tube, and its centre is provided with a perforation makes the described floating drum front end convex body that is positioned at described drop tube can penetrate described perforation and the outlet that closes described drop tube;

It is characterized in that, be provided with two passages in the described pointed inserted link, and offer a running-on in described pointed inserted link base side, described running-on and with a described channel connection, utilizing an air plug ring set to be loaded on the described running-on in addition again, is a film seal that can supply syringe needle to insert in the described pore plug ring.

2, dropping syringe according to claim 1 is characterized in that, the intra-annular film seal of described air plug is to be an arc surfaced.

3, dropping syringe according to claim 1 is characterized in that, lower periphery can add several raised lines on the described floating drum, and described raised line almost contacts with drop tube inwall; When floating drum when floating and descend, the convex body of described raised line front end can penetrate in the perforation of described packing ring really.

4, dropping syringe according to claim 1 is characterized in that, described connection tube is to be made of the flexible material with elastic shrinkage polymerization.