CN2522084Y

CN2522084Y - New-type transfusion system filter

Info

Publication number: CN2522084Y
Application number: CN 02215930
Authority: CN
Inventors: 徐玉峰
Original assignee: YINGHAO BOPU MEDICAL APPARATUS CO Ltd SHANGHAI
Current assignee: YINGHAO BOPU MEDICAL APPARATUS CO Ltd SHANGHAI
Priority date: 2002-02-28
Filing date: 2002-02-28
Publication date: 2002-11-27
Anticipated expiration: 2012-02-28

Abstract

The utility model relates to the art of medical equipment technology, in particular to a novel infusion filter. The infusion products currently used have some difficulties in exhaust and filtration, thus bringing inconvenience to patients and medical staff in use. The utility model provides a novel infusion filter, including an inlet (7) above, an outlet (15) below and a filter cavity (20) in the middle. The inside of the filter cavity (20) is provided with a filter membrane (2) which divides the filter cavity (20) into an inlet cavity (11) on left and an outlet cavity (12) on right in parallel; wherein, the inlet (7) is connected with the inlet cavity (11) and the outlet (15) is connected with the outlet cavity (12). The utility model basically overcomes the defects of the prior infusion products, thus having significant economical and social benefits.

Description

A kind of filter of novel transfusion device

Technical field

This utility model relates to technical field of medical instruments, is specifically related to a kind of filter of novel transfusion device.

Background technology

In the process of transfusion, usually contain small insoluble solid granule in the medicinal liquid, as entering human body, can bring many untoward reaction to patient with transfusion, therefore must remove these impurity.In existing technology, usually use fibrous membrane as filter medium, but the fibrous membrane of filter itself also may become pollutant with fibre shedding sometimes.Also have, before disposable infusion set uses, in pipeline, all there is air to exist, during use, entry needle could be entered the human vein blood vessel after bubble must being drained, but because the product that uses all exists some defectives in this respect at present, aerofluxus is some difficulty all, and these make patient and medical personnel that inconvenience all be arranged in use.

Summary of the invention

The purpose of this utility model is exactly the deficiency that changes the disposable transfusion device middle filtrator that uses at present, and a kind of filter of novel transfusion device rational in infrastructure is provided.

The filter of a kind of novel transfusion device that this utility model provides comprises an inlet that is positioned at the top, a liquid outlet that is positioned at the below, reach one and be positioned at intermediary filter chamber, an admission chamber arranged side by side and one go out sap cavity about having a filter membrane that described filter chamber is divided in described filter chamber, wherein, described inlet links to each other with described admission chamber, and described liquid outlet goes out sap cavity and links to each other with described.

Be connected with into water aperture above this utility model admission chamber and between the inlet, above described filter chamber, have several air ducts, be coated with the film that blocks water in the middle of the air duct, the described film that blocks water can stop the liquid in the described filter to flow out, but can allow the unnecessary gas in the filter from then on discharge, the film that blocks water described in the utility model is placed on the top of the feed liquor aperture of filter, form liquid outlet channel and go out sap cavity by a bottom surface at described fluid intracavity, will from the liquids and gases of admission chamber through circulation from bottom to top after outside the discharge filter.

Filter membrane described in the utility model can be filter mediums such as ion microporous membrane, nucleopore membranes, nanometer film, also can be overlapping use of ionic membrane and fibrous membrane or compound use, also can use overlapping use of nucleopore membranes and fibrous membrane or compound use.

The filter of a kind of novel transfusion device that this utility model provides is owing to adopted a kind of novel structure, it has overcome the deficiency that existing infusion apparatus product exists basically aspect aerofluxus, filtration, can bring great benefit for patient and medical personnel, so it have very remarkable economic efficiency and social benefit.

Below, with embodiment this utility model is further described in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 be Fig. 1 A-A to generalized section.

Fig. 3 for the B-B of figure to section show view.

Fig. 4 is the sketch map of another kind of structure of the present utility model.

Fig. 5 be Fig. 4 C-C to generalized section.

The specific embodiment

Embodiment 1

As Figure 1-3, the filter of a kind of novel transfusion device that this utility model provides comprises an inlet 7 that is positioned at the top, a liquid outlet 15 that is positioned at the below, reach one and be positioned at intermediary filter chamber 20, an admission chamber 11 arranged side by side and one go out sap cavity 12 about having a filter membrane 2 that described filter chamber 20 is divided in described filter chamber 20, wherein, described inlet 7 links to each other with described admission chamber 11, and described liquid outlet 15 goes out sap cavity 12 and links to each other with described; This filter membrane 2 is placed in the system channel of described filter, can stop small insoluble solid particle, fiber, impurity etc. to pass through effectively.

As shown in Figure 3, be connected with feed liquor aperture 8 above this utility model admission chamber 11 and between the inlet 7, above described filter chamber 20, have several air ducts 13, be coated with the film 1 that blocks water in the middle of the described air duct 13, the described film 1 that blocks water can stop the liquid in the described filter to flow out, but can allow the unnecessary gas in the filter from then on discharge.The film 1 that blocks water described in the utility model is placed on the top of the feed liquor aperture 8 of filter, and described several air duct 13 openings are upwards, like this, the gas in described filter just can happy ground discharge filter outside.

As shown in Figure 3, after transfusion device is started working, liquid enters filter from the inlet 7 of described filter, and liquid in the pipeline of transfusion device upper end and residual air enter described admission chamber 11 from feed liquor aperture 8 together and enter out sap cavity 12 through filter membranes 2, molecule in the described liquid is blocked in the admission chamber 11, plays a role in filtering.Along with constantly entering of liquid, admission chamber 11 and the liquid that goes out in the sap cavity 12 constantly increase, wherein gas is progressively arrived in the top, gas in the admission chamber 11 enters described air duct 13 back discharge filters by the above-mentioned film 1 that blocks water, and the air that goes out in the sap cavity 12 is rushed to outside liquid outlet 15 discharge filters.

Along with the filter intracavity liquid constantly increases, partially liq is by aperture 10 admission passages 9, gas in the passage 9 is upwards caught up with, again through described air duct 13 discharge filters, described passage 9 is to be surrounded by

transfusion device sidewall

3 and 4, it 5 has filter membrane 2 and

transfusion device sidewall

3 and 4 sealings in the junction, and 6 by

transfusion device sidewall

3 and 4 sealings in the junction, and the sectional area of the passage 9 that this utility model provides is advisable with 0.5～4 square millimeter.

As shown in Figure 3, of the present utility modelly go out in the sap cavity 12 bottom surface 14 is arranged, it mainly is to rely on gravity progressively will amass in the air that goes out sap cavity 12 bottoms the liquid from admission chamber 11 upwards to catch up with, and enters outside the described air duct 13 back discharge filters by the above-mentioned film 1 that blocks water.

Be the control leakage, filter membrane 2 described in the utility model is fixed by

transfusion device sidewall

3 and 4 mutual concavo-convex fitted seal, also reliable transfusion device sidewall 3 of the described film 1 that blocks water and 4 mutual tight seals are fixed, and also available burn or glue are pasted the described film 1 that blocks water is pasted.

Filter membrane 2 described in the utility model can be filter mediums such as ion microporous membrane, nucleopore membranes, nanometer film, also can be overlapping use of ionic membrane and fibrous membrane or compound use, also can use overlapping use of nucleopore membranes and fibrous membrane or compound use.

Embodiment 2

Shown in Fig. 4-5, the inlet 7 of the filter of a kind of novel transfusion device that this utility model provides, passage 9 link to each other with passage 19, when from the liquid of inlet 7 through passage 19 admission passages 9, the sectional area of described passage 9 is advisable with 0.5～4 square millimeter, again by described passage 9 in aperture 10 enters admission chamber 11, enter out sap cavity 12 through described filter membrane 2, the molecule in the described liquid is blocked in the admission chamber 11, plays a role in filtering.Along with constantly entering of liquid, admission chamber 11 and the liquid that goes out in the sap cavity 12 constantly increase, wherein gas is progressively arrived in the top, gas in the admission chamber 11 enters described air duct 13 back discharge filters by the above-mentioned film 1 that blocks water, and the air that goes out in the sap cavity 12 is rushed to outside liquid outlet 15 discharge filters.

Claims

1, a kind of filter of novel transfusion device, comprise an inlet (7) that is positioned at the top, a liquid outlet (15) that is positioned at the below, reach one and be positioned at intermediary filter chamber (20), an admission chamber (11) arranged side by side and one go out sap cavity (12) it is characterized in that having a filter membrane (2) that described filter chamber (20) is divided in described filter chamber (20) about, wherein, described inlet (7) links to each other with described admission chamber (11), and described liquid outlet (15) goes out sap cavity (12) and links to each other with described; Between the top of described admission chamber (11) and inlet (7), be connected with feed liquor aperture (8), have air duct (13), be coated with the film that blocks water (1) in the middle of the air duct (13) in the top of described filter chamber (20).

2, the filter of a kind of novel transfusion device according to claim 1 is characterized in that described inlet (7) links to each other with passage (9), passage (19), and described passage (9) links to each other with admission chamber (11) through aperture (10).

3, the filter of a kind of novel transfusion device according to claim 1 is characterized in that describedly going out in the sap cavity (12) bottom surface (14) is arranged.

4, the filter of a kind of novel transfusion device according to claim 1 is characterized in that the described film that blocks water (1) is placed on the top of the feed liquor aperture (8) of filter, and described air duct (13) opening upwards.

5, the filter of a kind of novel transfusion device according to claim 1, it is characterized in that the passage (9) that the both sides of feed liquor aperture (8) has transfusion device sidewall (3) and (4) to surround in the described filter, (5) have filter membrane (2) and transfusion device sidewall (3) and (4) sealing in the junction for it, (6) are sealed by transfusion device sidewall (3) and (4) in the junction, and the sectional area of described passage (9) is 0.5～4 square millimeter.

6, the filter of a kind of novel transfusion device according to claim 1 is characterized in that the described film that blocks water (1) can rely on transfusion device sidewall (3) and (4) tight seal mutually, perhaps pastes with burn or glue the described film that blocks water (1) is pasted.

7, the filter of a kind of novel transfusion device according to claim 1, it is characterized in that described filter membrane (2) is respectively ion microporous membrane, nucleopore membranes, nano-film filtration medium, or ionic membrane and overlapping use of fibrous membrane or compound use, perhaps use overlapping use of nucleopore membranes and fibrous membrane or compound use.