CN2555851Y - Precision liquid medicine filter for venous transfusion system - Google Patents
Precision liquid medicine filter for venous transfusion system Download PDFInfo
- Publication number
- CN2555851Y CN2555851Y CN 02265810 CN02265810U CN2555851Y CN 2555851 Y CN2555851 Y CN 2555851Y CN 02265810 CN02265810 CN 02265810 CN 02265810 U CN02265810 U CN 02265810U CN 2555851 Y CN2555851 Y CN 2555851Y
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- filter
- filter membrane
- membrane
- liquid medicine
- cavity
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Abstract
The utility model relates to an accurate medicinal liquid filter of an intravenous set. The current infusion set has defects in filtering. Therefore, the utility model provides the accurate medicinal filter of the intravenous set. A liquid feed hole (14) is arranged between the upper part of a liquid feed chamber (12) and a liquid feed inlet (1). The upper part of a medicinal liquid chamber (11) is provided with a wind-way (16). The middle part of the wind-way (16) is covered by a watertight film (15). The liquid feed inlet (1) and a return flow line (8) are connected with a pinhole channel (9). The return flow line is communicated with the liquid feed chamber (12) through a pinhole channel (9). A liquid outlet chamber (7) is provided with an underside (4). As the utility model adopts a novel structure, the utility model can overcome the defects existing in exhaust and filtering, which benefits patients and paramedics a lot.
Description
Technical field
This utility model relates to the filter technology field of using in the transfusion device, is specifically related to a kind of precision liquid medicine filter of intravenous transfusion device.
Background technology
In the process of transfusion, there are two problems to be difficult to solve at present, one is microgranule, one is bubble.Usually contain small not capacitive solid particle in the medicinal liquid,, can bring many untoward reaction, therefore must remove these impurity to patient as entering human body with transfusion.In existing technology, usually use fibrous membrane as filter medium, but the fibrous membrane of filter itself also might become pollutant with fibre shedding sometimes.Also have, before disposable infusion set uses, in pipeline, all there is air to exist, during use, transfusion 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, bubble is difficult to drain, also can produce small bubble in addition in infusion process is adsorbed on the tube wall, enter in the body with liquid incessantly, transfusion person works the mischief to quilt, and these insoluble problems 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 transfusion device middle filtrator that uses at present, and the more reasonably precision liquid medicine filter of intravenous transfusion device of a kind of structure is provided.
The precision liquid medicine filter of a kind of intravenous 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, and one be positioned at intermediary filter chamber, an admission chamber arranged side by side and 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.
Above the admission chamber of this utility model filter and be connected with into water aperture between the inlet, above described admission 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, in described fluid cavity, form liquid outlet channel and go out sap cavity by a bottom surface, will from the liquids and gases of admission chamber through circulation from top to bottom after outside the discharge filter.
Filter membrane at this utility model filter can be filter mediums such as microporous membrane, nucleopore membranes, nanometer film respectively, also can be overlapping use of ionic membrane and fibrous membrane or compound use, perhaps can use overlapping use of nucleopore membranes and fibrous membrane or compound use.
The precision liquid medicine filter of a kind of intravenous transfusion device that provides at this utility model 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.
Specific embodiments
As shown in Figure 1, the precision liquid medicine filter of a kind of intravenous transfusion device that this utility model provides comprises an inlet 1 that is positioned at the top, a liquid outlet 6 that is positioned at the below, reach one and be positioned at intermediary medicinal liquid cavity 11, an admission chamber 12 arranged side by side and one go out sap cavity 7 about having a filter membrane 13 that described medicinal liquid cavity 11 is divided in described medicinal liquid cavity 11, wherein, described inlet 1 links to each other with described admission chamber 12, and described liquid outlet 6 goes out sap cavity 7 and links to each other with described.
The precision liquid medicine filter that this utility model provides by about a relative filter membrane seat 5 and filter membrane lid 10 combine closely and constitute, place described filter membrane 13 at its 2 positions, junction, the system flow that this filter membrane 13 is placed in described filter medicinal liquid cavity 11 can effectively stop small insoluble solid particle, fiber, impurity etc. to pass through in passage.Described inlet 1 and liquid outlet 6 are positioned at a side of described filter membrane seat 5, can make things convenient for the operator to use like this, the situation of medicinal liquid in the time of can being convenient to again observe transfusion.
Shown in Fig. 1-2, be connected with feed liquor aperture 14 above this utility model admission chamber 12 and between the inlet 1, above described medicinal liquid cavity 11, have 2 air ducts 16, be coated with the film 15 that blocks water in the middle of the described air duct 16, the described film 15 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 15 that blocks water described in the utility model is placed on the top of the feed liquor aperture 14 of filter, and described 2 air duct 16 openings are upwards, like this, the gas in described filter just can happy ground discharge filter outside.
As shown in Figure 1, after transfusion device is started working, medicinal liquid and bubble enter filter from the inlet 1 of described filter, and liquid in the pipeline of filter upper end and residual air enter described admission chamber 12 from feed liquor aperture 14 together, enter out sap cavity 7 through filter membrane 13, molecule in the described liquid is blocked in the admission chamber 12, plays a role in filtering.Along with constantly entering of liquid, admission chamber 12 and the liquid that goes out in the sap cavity 7 constantly increase, wherein bubble is progressively arrived in the top, gas in the admission chamber 12 enters described air duct 16 back discharge filters by the above-mentioned film 15 that blocks water, and the air that goes out in the sap cavity 7 is rushed to outside liquid outlet 6 discharge filters.
Shown in Fig. 1-2, along with the filter intracavity liquid constantly increases, partially liq enters return flow line 8 by aperture passage 9, and this return flow line 8 has changed the flow direction of liquid, gas in the return flow line 8 is upwards caught up with, again through described air duct 16 discharge filters.Described return flow line 8 is to be made of the filter membrane seat 5 of transfusion device sidewall and filter membrane lid 10, it is the 2 filter membrane seats 5 and 10 sealings of filter membrane lid that filter membrane 13 and transfusion device sidewall arranged in the junction, like this, the return flow line that provides of this utility model 8 is the chamber of confluxing of gas and liquid.
As shown in Figure 1; one bottom surface 4 in going out sap cavity 7, this utility model filter is arranged; it mainly is to rely on gravity progressively will amass in the air that goes out sap cavity 7 bottoms the liquid from admission chamber 12 upwards to catch up with; enter outside the described air duct 16 back discharge filters by the above-mentioned film 15 that blocks water; in addition; described bottom surface 4 can faster under the situation, intercept impurity such as sedimentary antibacterial and insoluble granule on the described filter membrane 13 better at flow velocity, protects filter membrane 13 better.
Be the control leakage, filter membrane 13 described in the utility model leans on the filter membrane seat 5 of filter wall to cover 10 mutual concavo-convex fitted seal with filter membrane and fixes, and like this, can increase the intensity of described filter membrane 13, and making increases service life by not cracky of described filter membrane 13.The filter membrane seat 5 of the described also reliable filter wall of film 15 that blocks water is fixed with filter membrane lid 10 mutual tight seals, and methods such as also available burn or glue stickup are with described film 15 stickups that block water.
Shown in Fig. 1-2, the precision liquid medicine filter of a kind of transfusion device that this utility model provides can also have a kind of structure, be that described inlet 1, return flow line 8 link to each other with passage 9, when medicinal liquid and bubble from inlet 1 enter return flow line 8 through aperture passage 9, the sectional area of described return flow line 8 is advisable with the 0.5-4 square millimeter, again by described return flow line 8 in aperture passage 9 enters admission chamber 12, enter out sap cavity 7 through described filter membrane 13, molecule in the described liquid is blocked in the admission chamber 12, plays a role in filtering.Along with constantly entering of liquid, admission chamber 12 and the liquid that goes out in the sap cavity 7 constantly increase, wherein gas is progressively arrived in the top, gas in the admission chamber 12 enters described air duct 16 back discharge filters by the above-mentioned film 15 that blocks water, and the air that goes out in the sap cavity 7 is rushed to outside liquid outlet 6 discharge filters.
Claims (5)
1, a kind of precision liquid medicine filter of intravenous transfusion device, it is characterized in that this precision liquid medicine filter comprises an inlet (1) that is positioned at the top, a liquid outlet (6) that is positioned at the below, reach one and be positioned at intermediary medicinal liquid cavity (11), an admission chamber (12) arranged side by side and one go out sap cavity (7) about having a filter membrane (13) that described medicinal liquid cavity (11) is divided in described medicinal liquid cavity (11), wherein, described inlet (1) links to each other with described admission chamber (12), and described liquid outlet (6) goes out sap cavity (7) and links to each other with described; Be connected with feed liquor aperture (14) between the top of described admission chamber (12) and the inlet (1), have air duct (16), be coated with the film that blocks water (15) in the middle of the described air duct (16) in the top of described medicinal liquid cavity (11); Described inlet (1), return flow line (8) link to each other with little hole path (9), and described return flow line (8) communicate with admission chamber (12) through little hole path (9); Go out in the sap cavity (7) bottom surface (4) is arranged described.
2, the precision liquid medicine filter of a kind of intravenous transfusion device according to claim 1, it is characterized in that described precision liquid medicine filter by about a relative filter membrane seat (5) and filter membrane lid (10) formation of combining closely, place described filter membrane (13) at position, its junction (2), described filter membrane (13) is placed in the system flow of described filter medicinal liquid cavity (11) in passage, and described inlet (1) and liquid outlet (6) are positioned at a side of described filter membrane seat (5).
3, the precision liquid medicine filter of a kind of intravenous transfusion device according to claim 1 is characterized in that the top of described medicinal liquid cavity (11) has 2 air ducts (16), and described 2 air ducts (16) opening upwards.
4, the precision liquid medicine filter of a kind of intravenous transfusion device according to claim 1, it is characterized in that described filter membrane (13) leans on the filter membrane seat (5) of filter wall and filter membrane lid (10) mutual concavo-convex fitted seal to fix, the described film that blocks water (15) is also fixed with the mutual tight seal of filter membrane lid (10) by the filter membrane seat (5) of filter wall, perhaps can the described film that blocks water (15) be pasted with methods such as burn or glue stickups.
5, the precision liquid medicine filter of a kind of intravenous transfusion device according to claim 1, it is characterized in that described filter membrane (13) is respectively filter mediums such as ion microporous membrane, nucleopore membranes, nanometer film, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265810 CN2555851Y (en) | 2002-07-26 | 2002-07-26 | Precision liquid medicine filter for venous transfusion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265810 CN2555851Y (en) | 2002-07-26 | 2002-07-26 | Precision liquid medicine filter for venous transfusion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2555851Y true CN2555851Y (en) | 2003-06-18 |
Family
ID=33731762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02265810 Expired - Fee Related CN2555851Y (en) | 2002-07-26 | 2002-07-26 | Precision liquid medicine filter for venous transfusion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2555851Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157154A (en) * | 2013-01-16 | 2013-06-19 | 上海金塔医用器材有限公司 | Filter and infusion apparatus used for infusion apparatus fine filtration |
-
2002
- 2002-07-26 CN CN 02265810 patent/CN2555851Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157154A (en) * | 2013-01-16 | 2013-06-19 | 上海金塔医用器材有限公司 | Filter and infusion apparatus used for infusion apparatus fine filtration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |