CN2235817Y

CN2235817Y - Sterilized infusion device

Info

Publication number: CN2235817Y
Application number: CN 95239611
Authority: CN
Inventors: 赵秋霞
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-20
Filing date: 1995-04-20
Publication date: 1996-09-25
Anticipated expiration: 2005-04-20

Abstract

The utility model relates to a sterilized infusion device which comprises an infusion device and an air inlet pipe. The utility model is characterized in that the tail end of the air inlet pipe is a plastic pipe in which a filter screen is arranged, the front end of the air inlet pipe is an air exhaust pipe of which the top is an oval oblique cross section and the air exhaust pipe can directly reach out of the liquid level at the bottom of an infusion bottle. The utility model has the advantages that the contact of germ-carrying air exhausted into the bottle by the air inlet pipe with physic liquor can be effectively blocked, and accordingly, the infusion reaction caused by harmful bacteria entering a human body in infusion can be avoided.

Description

Aseptic infusion device

The utility model relates to a kind of improvement of infusion set.

At present, China's infusion set of being used for medical transfusion generally uses disposable transfusion device.Though stopped the infusion reaction that causes owing to cross infection that carrying disease germs of transfusion device forms.But, still be difficult to avoid the bacterial cross-infection in the infusion process and cause infusion reaction because the air inlet pipe in this infusion set is lacked (as shown in Figure 1) very much.In Fig. 1, the 1st, infusion bottle, the 8th, transfusion device, the 5th, bottle stopper, the 6th, air inlet pipe, the 4th, air inlet pipe syringe needle.Because the syringe needle 4 of this air inlet pipe is too short, the air 3 that carries out the band antibacterial in the infusion bottle 1 in infusion process is when needle point enters in the infusion bottle, and this air that carries disease germs need be by arriving the bottle end behind the liquid 2 in the infusion bottle, to keep the pressure in the bottle.Thereby the liquid 2 in the infusion bottle just become the filter of air that enters in the bottle, makes airborne antibacterial and grit dissolve in transfusion, plays infusion reaction thus.Though be provided with one deck sponge drainage screen 7 in the air inlet pipe 6 in the present infusion set, but because the pressure in the bottle is higher after the air inlet, liquid is also owing to the effect of its gravity enters in the air inlet pipe in the bottle, along with the increase pressure of the inside of a bottle Bu Duan Minus of amount of infusion is little, liquid return in the air inlet pipe is in bottle, thereby after filtering out airborne big grain dust by sponge drainage screen 7, antibacterial and granule dust are still brought in the transfusion in the bottle by backflow, can't be removed.This has just caused the pollution of transfusion in the bottle, thereby causes patient's infusion reaction.

The purpose of this utility model provides a kind of infusion set at the bottom of air inlet in the air inlet pipe is not directly entered by transfusion bottle.

Technical solution of the present utility model is as follows:

Transfusion device and air inlet pipe are set on the bottle stopper of infusion bottle, the afterbody that it is characterized in that air inlet pipe is the plastic tube that has drainage screen in, its front end is an exhaustor, this exhaustor passes outside the bottle end liquid level of the through infusion bottle of bottle stopper, and the end that this exhaustor contacted with the bottle end is that a cross section is the oblique section of ellipse garden shape.

Below in conjunction with accompanying drawing the technical solution of the utility model is described further:

What Fig. 2 provided is structural representation of the present utility model.In the drawings, the 11st, infusion bottle, the 15th, bottle stopper, the 17th, transfusion device, the 16th, air inlet pipe.Be provided with a drainage screen 18 (as sponge drainage screen etc.) in the tail end plastic tube of this air inlet pipe 16, in order to remove airborne grit.Its front end is an exhaustor 14.The top of this exhaustor is a shape oblique section, ellipse garden (19), and its top stretches out at the bottom of the infusion bottle bottle outside the liquid level, when transfusion, inserts transfusion device earlier in bottle stopper 15, inserts the exhaustor of air inlet pipe 16 front ends then.Exhaustor enters transfusion 12 wherein when inserting, after discharging by the plastic tube of afterbody, be bent upwards the afterbody plastic tube fixing.When then infusing, because the bottle end is down, part is left in its bottle bottom does not have liquid layer, carrying out along with transfusion, pressure of the inside of a bottle reduces gradually, when less than ambient pressure, outside air 13 by air inlet pipe 16 behind the big grain of wherein drainage screen 17 filterings dust by exhaustor directly enter infusion bottle the top and without transfusion.Because the proportion of air is more much smaller than transfusion, therefore is suspended in airborne dust and antibacterial and also will keeps being suspended in the air always and can't dissolve in the transfusion.This has just been avoided airborne dust and antibacterial to enter transfusion patient through transfusion, thereby reaches the purpose of aseptic transfusion, avoids causing infusion reaction.

The utility model has the advantages that airborne being harmful to of having avoided extraneous in the infusion process Bacterium passes to patient through transfusion, introduces cross-infection thereby reduced because of transfusion Chance greatly reduces the generation of infusion reaction. And structure is very simple, is particularly suitable for The usefulness of the transfusion under the high environmental condition of air-borne bacteria and dirt content.

Claims

1. aseptic infusion device, comprise a transfusion device and an air inlet pipe, the afterbody that it is characterized in that air inlet pipe is the plastic tube that has drainage screen in, its front end is an exhaustor, this exhaustor passes outside the bottle end liquid level of the through infusion bottle of infusion bottle bottle stopper, and this exhaustor stretch out bottle at the bottom of the outer end of liquid level be that a cross section is the oblique section of ellipse garden shape.