CN201091716Y

CN201091716Y - Air prevention liquid drug filter

Info

Publication number: CN201091716Y
Application number: CNU2007200236166U
Authority: CN
Inventors: 张新文; 蒋子豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-15
Filing date: 2007-06-15
Publication date: 2008-07-30
Anticipated expiration: 2017-06-15

Abstract

An air-proof drug solution filter belongs to the filtering fittings of the instrument for introducing media into the body by means of hypodermic injection, intravenous injection or intramuscular injection. The air-proof drug solution filter is characterized in that a drug solution inlet cavity is full filled with sponge filtering layers arranged in the cavity. The utility model can exclude the possibility that air may enter the solution outlet cavity via the solution inlet cavity and ensures that air does not enter the human body during the transfusion process. In addition, the sponge filtering layers of the utility model can block most of particulates, thus not only prolonging the service life of the drug solution filtering membrane but also improving transfusion safety. The air-proof drug solution filter is especially applicable to critical patients requiring long transfusion time.

Description

Anti-air liquid medicine filter

Technical field

This utility model belongs in the mode of subcutaneous injection, intravenous injection or intramuscular injection introduces the filter assemblies of intravital apparatus with medium, is specifically related to a kind of anti-air liquid medicine filter that is used to infuse.

Background technology

Transfusion is the large bolus injection liquid that is splashed into human body by vein, and it directly enters the blood circulation of human body, is the important means of disease preventing and treating.Typical infusion process is that the medicinal liquid in the infusion bottle enters human vein behind horse Venturi tube, control folder and liquid medicine filter.The effect of liquid medicine filter is pollutant and the air admission human body such as microgranule that prevents in the medicinal liquid.

Notification number is that the Chinese patent of CN2549986Y discloses a kind of transfusion device liquid medicine filter, contain loam cake, lower cover, loam cake, cover and have liquid inlet and outlet down, loam cake, lower cover all have inner chamber, between loam cake and lower cover, filter membrane is housed, on the lower cover contact surface that contacts with filter membrane, is provided with the muscle that supports filter membrane, it is characterized in that: described muscle is a plurality of arc pieces of dispersing arrangement, and the arc piece surrounds delivery hole.

Mainly there is following problem in the liquid medicine filter of prior art: 1) before the transfusion, the gas of admission chamber can not be discharged effectively fully; 2) in the infusion process, because the diameter of inlet is less than the diameter of admission chamber, in addition, tube for transfusion, filter may change by occurrence positions, may cause like this to enter gas or gassing in the admission chamber, may cause the gas permeation filter membrane to enter the malpractice of human body.

The content of utility model

This utility model provides a kind of anti-air to prevent the air liquid medicine filter at problems of the prior art, by the means of sponge filter course are set in admission chamber, has stopped the possibility of admission chamber residual air, has solved the problems of the prior art.

The purpose of this utility model specifically is to adopt following technical scheme to realize, that is:

A kind of anti-air liquid medicine filter, comprise upper casing, lower casing, inlet is set on the upper casing, liquid outlet is set on the lower casing, be provided with liquid medicine filtering membrane between upper casing and the lower casing, the inner chamber that liquid medicine filtering membrane forms upper and lower shell is divided into admission chamber and goes out sap cavity, admission chamber and go out sap cavity and be connected with inlet, liquid outlet respectively, liquid medicine filtering membrane is set on the lower casing to be supported, it is described that to go out sap cavity be to support the through hole that surrounds by liquid medicine filtering membrane, it is characterized in that also be provided with the sponge filter course in admission chamber, the sponge filter course is full of admission chamber.

The sponge that this utility model adopts is medical, its difficult drop-off sponge bits or microgranule, and this sponge is easy to obtain in the commercial goods.

This utility model is disposable products, is specially adapted to the long patient with severe symptoms of transfusion time.

The beneficial effect that the utlity model has is:

When 1) this utility model used front exhaust, when medicinal liquid is full of whole admission chamber, all gas in the sponge was got rid of by medicinal liquid; When normal infusion, because the adsorption of sponge is all occupied by medicinal liquid in all spaces of sponge, so just blocked air by the probability that admission chamber enters out sap cavity, guaranteed that air can not enter human body in infusion process;

2) sponge filter course of the present utility model can stop most microgranule, has reduced the chance that microgranule blocks liquid medicine filtering membrane like this, has prolonged the service life of liquid medicine filtering membrane, has further improved the safety of transfusion simultaneously.

Description of drawings

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the upward view of embodiment 1.

The specific embodiment

Among the figure, 1 is upper casing, and 2 is lower casing, and 3 is inlet, and 4 is liquid outlet, and 5 is liquid medicine filtering membrane, and 6 is the sponge filter course, and 7 for going out sap cavity, and 8 are the filter membrane support.

Embodiment

As shown in Figure 1, a kind of anti-air liquid medicine filter, comprise upper casing 1, lower casing 2, inlet 3 is set on the upper casing 1, liquid outlet 4 is set on the lower casing 2, is provided with liquid medicine filtering membrane 5 between upper casing 1 and the lower casing 2, the inner chamber that liquid medicine filtering membrane 5 forms upper and lower shell is divided into admission chamber and goes out sap cavity 7, admission chamber and go out sap cavity 7 and be connected with inlet 3, liquid outlet 4 respectively is provided with liquid medicine filtering membrane and supports 8 on the lower casing 2; Also be provided with sponge filter course 6 in admission chamber, sponge filter course 6 is full of admission chamber.It is as shown in Figure 2, described that to go out sap cavity 7 be to support 8 through holes that surround by liquid medicine filtering membrane.This utility model material can adopt suitable materials such as medical plastic, can adopt lower casing in the mould molding manufacturing, and liquid medicine filtering membrane, sponge filter course can adopt the method for prior aries such as ultrasonic bonding, last lower casing clamping to make.

Claims

1. anti-air liquid medicine filter, comprise upper casing, lower casing, inlet is set on the upper casing, liquid outlet is set on the lower casing, be provided with liquid medicine filtering membrane between upper casing and the lower casing, the inner chamber that liquid medicine filtering membrane forms upper and lower shell is divided into admission chamber and goes out sap cavity, admission chamber and go out sap cavity and be connected with inlet, liquid outlet respectively, liquid medicine filtering membrane is set on the lower casing to be supported, it is described that to go out sap cavity be to support the through hole that surrounds by liquid medicine filtering membrane, it is characterized in that also be provided with the sponge filter course in admission chamber, the sponge filter course is full of admission chamber.