CN1714875A - Medical self air exhausting transfusion filter - Google Patents
Medical self air exhausting transfusion filter Download PDFInfo
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- CN1714875A CN1714875A CN 200510075632 CN200510075632A CN1714875A CN 1714875 A CN1714875 A CN 1714875A CN 200510075632 CN200510075632 CN 200510075632 CN 200510075632 A CN200510075632 A CN 200510075632A CN 1714875 A CN1714875 A CN 1714875A
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- filter
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- transfusion
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Abstract
The medical self air exhausting transfusion filter consists of input pipe, liquid phase filter membrane, air phase filter membrane, air guiding membrane, filter chamber, inner dispersion air chamber, outer dispersion air chamber, air exhaust holes and output pipe. Under the action of gravitational force, when liquid containing air enters to the filter chamber of the filter, the liquid is filtered in the liquid phase filter membrane before entering to the output pipe, while the air under the common action of liquid mass and the front load resistance of static pressure is filtered in the air phase filter membrane before entering to the inner dispersion air chamber and the outer dispersion air chamber successively before dispersing via the air guiding membrane to atmosphere. The present invention has the features of reasonable structure, being simple and practical, infusion safety, etc.
Description
Technical field
The present invention relates to a kind of medical infusion filter, particularly a kind ofly be used for the filter that infusion process can be got rid of liquid hollow gas automatically.
Background technology
At present, the disposable infusion filter of clinical practice, mostly be to place the transfusion device pipe end to be connected in series with transfusion needle, its structure is to put a liquid phase filter membrane in the filter filter chamber that expands bottom, the macromolecular particle in the liquid (〉=15 μ m or 〉=5 μ m) filtering can not entered human body.But in use, liquid enters tube for transfusion numeration when dripping kettle in the liquid bottles, and the drop that is produced can be to dripping liquid level distribution bump in the kettle, and the liquid surface pressure of bump liquid level increases, gas solubility can increase, and the spray that splashes in addition also can be dissolved in gas molecule in the air in the liquid; During general the transfusion, every milliliters of liquid produces 20 drops, conventional transfusion then has the drop bump 10,000 times for 500 milliliters, after each dissolved minimum gas enters liquid-transport pipe-line with liquid, because of liquid recovers normal pressure, the gas effusion of can from water, dissociating, the gathering of a large amount of small gases forms bubble, be attached on the transfusion tube wall, along with the continuous gathering of numerous bubbles is merged, in liquid-transport pipe-line, can form one section gas, fill pipe, at the buoyancy of this bubble during less than the quality of this bubble epimere liquid, this section gas just moves down along with moving of liquid, enters filter at last, and might enter blood.So, in the clinical transfusion treatment, requiring the constantly touring observation of nurse, the artificial bubble that is produced by above-mentioned reason of getting rid of had both increased clinical medical and nursing personnel's work, also influenced the effect of infusion treatment, made infusion process have potential safety hazard.
Summary of the invention
Purpose of the present invention is constantly assembled the bubble that forms with regard to providing in a kind of filtering liquid-transport pipe-line automatically because of minimum gas, and the self-venting transfusion filter of filtering macromolecular particle, can prevent effectively that bubble from entering in the body, alleviate medical personnel's work, ensure that the safety of infusion treatment is carried out.
Technical scheme of the present invention is achieved in that filter is made up of last lower house and filter membrane; It is characterized in that: the upper shell by mold injection molding contains following structure: input pipe, the top of filter chamber and sidewall, (two) disperse air chamber, one with upper air-vent, lower house by mold injection molding contains the filter chamber bottom, the outlet tube structure, on, the lower house frit seal forms filter housings, at filter chamber sidewall and/or the welding of roof circumference liquid degassing (gas phase) filter membrane is arranged, in the opposite side of film has, outer two disperse air chambers with, have at least more than one steam vent that the two is connected, disperse air chamber upper surface covers welding outside the inducing QI film, is bonded with the liquid phase filter membrane in the bottom of filter chamber.In the infusion process, because of droplet impact liquid level (pressure increase) makes minimum gas constantly dissolve in liquid, in tube for transfusion, because of (static state) hypotension, the effusion of dissociating in the gas from liquid, small gas constantly be gathered into bubble, with the infusion of liquid, bubble enters filter chamber by the input pipe of filter, under action of gravity, liquid is passive to enter the film opposite side by liquid phase filter membrane one side, and macromolecular particle is by filtering; After air bubble enters filter chamber, bubble is adsorbed by the gas phase filter membrane, under the preload resistance combined effect of gravity and venous pressure, the passive disperse of bubble sees through liquid degassing (gas phase) filter membrane and enters interior disperse air chamber, and enter outer disperse air chamber with upper air-vent through one, pass the inducing QI film and enter airspace.The inducing QI film can prevent that dust from entering filter.
Description of drawings
Fig. 1 is specific embodiment 1 structural representation of this medical self air exhausting transfusion filter;
Fig. 2 is specific embodiment 2 structural representations of this medical self air exhausting transfusion filter;
Fig. 3 is specific embodiment 3 structural representations of this medical self air exhausting transfusion filter;
Specific embodiment
Be described in detail below in conjunction with the specific embodiment of accompanying drawing invention.
Specific embodiment 1: as shown in Figure 1, the input pipe (1) of filter of the present invention is connected in series with liquid-transport pipe-line end (1a), transfusion needle joint (2a) is connected in series with filter outlet tube (2); Liquid enters filter chamber (3) by filter input pipe (1), and under action of gravity, liquid enters infusion connector (2a) by the passive film opposite side of shifting to of liquid phase filter membrane (6) one sides through outlet tube (2), and macromolecular particle is blocked in the filter chamber (3); Gas in the liquid or bubble, under the combined effect of fluid pressure and venous pressure preload resistance, sidesway disperse air chamber (3a) in opposite side enters by gas phase filter membrane (4), and enter outer disperse air chamber (3b) by the steam vent (3c) that at least 6 diameters are not less than 1.5mm, pass inducing QI film (5) and enter airspace, finish filtering discharging bubble in the liquid.
Specific embodiment 2: Fig. 2 is an another kind of implementation of the present invention: loam cake (1) inwall at cylindrical filter for transfusion is tight with liquid degassing film (4) welding with ultrasonic power, one circular hole (4a) that is not less than 2.0mm is arranged in the center of this film body, liquid and mist enter filter filter chamber (3) by this hole (4a), and liquid is filtered by liquid phase filter membrane (6) and enter human body behind the transfusion device pipeline; Gas then under the preload resistance combined effect of liquid quality and venous pressure, is absorbed by liquid degassing film (4), permeates into the offside of film, and the steam vent (3c) that is not less than 2.0mm by at least four diameters enters airspace.
Specific embodiment 3: Fig. 3 is another implementation of the present invention: in the flat filtration device structure, liquid degassing film (4) has a steam vent (3c) that is not less than 3.0mm on the inwall of the fluid side of loam cake (a 1) side, the bottom margin in this hole with ultrasonic power with liquid degassing film (4) tight weld on loam cake housing 1 inwall, cover steam vent (3c) fully, during use, liquid enters filter chamber (3) by filter one side 2a, in plane slipstream mode, liquid is filtered after the opposite side 2b of filter enters human body by liquid phase film (6); Gas is positioned at loam cake (1) and absorbs near the liquid degassing film (4) of tapping side and permeate into airspace through steam vent (3c) then under the combined effect of the preload resistance of liquid quality and venous pressure in filter filter chamber (3).
Because the present invention has adopted liquid degassing (gas phase) filter membrane (4) and liquid phase filter membrane (6) combined effect in the structure of air containing fluid, make it when finishing to the macromolecular particle filtering, also can get rid of automatically because of the droplet impact liquid level makes gas dissolve in liquid and also assemble the bubble that forms gradually, thereby alleviate medical personnel's work, prevent that effectively gas from entering human body, improve the quality of infusion treatment, ensure its process safety.
Because the present invention has adopted in the sticking structure of applying inducing QI film (5) in disperse air chamber (3b) surface, make it in effective filtering liquid, in the gas, can prevent to enter filter after the dust granule accident from wearing out liquid degassing film.
Claims (4)
1, a kind of medical self air exhausting transfusion filter is made up of upper and lower casing and filter membrane; It is characterized in that: the upper shell by mold injection molding contains following structure: input pipe (1), the top and the sidewall of filter chamber (3), (two) disperse air chamber (3a) and (3b), more than one steam vent (3c), lower house by mold injection molding contains filter chamber (3) bottom, outlet tube (2) structure, upper shell (1) forms filter body with lower house (2) frit seal, filter body can be cylindrical, also the sidewall and/or the welding of roof circumference at filter chamber (3) of flat have liquid degassing (gas phase) filter membrane (4), the opposite side of film (4) has (two) disperse air chamber (3a) and (3b), is bonded with liquid phase filter membrane (6) in the bottom of filter chamber (3).
2, according to the said medical self air exhausting transfusion filter of claim 1, it is characterized in that: the opposite side of liquid degassing (gas phase) filter membrane (4) has two disperse air chambers (3a) and (3b), having at least six diameters to be not less than the steam vent of 1.5mm (3c) connects two disperse air chambers, enter the upper surface at disperse air chamber (3B), welding has inducing QI film (5).
3, according to the said medical self air exhausting transfusion filter of claim 1, it is characterized in that: the inner roof wall of the upper shell (1) of said liquid degassing film (4) and cylindrical filter housing is with the ultrasonic power welding, and uniform at least 4 diameters are not less than the steam vent (3c) of 2.0mm on roof;
4, according to the said medical self air exhausting transfusion filter of claim 1, it is characterized in that: said liquid degassing film (4) is positioned on the proximal edge inner roof wall of upper shell (1) of flat filter for transfusion, is connected with ultrasonic power melting welding with upper shell (1); Upper shell has a steam vent at least, and the aperture is not less than 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510075632 CN1714875A (en) | 2005-06-03 | 2005-06-03 | Medical self air exhausting transfusion filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510075632 CN1714875A (en) | 2005-06-03 | 2005-06-03 | Medical self air exhausting transfusion filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1714875A true CN1714875A (en) | 2006-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510075632 Pending CN1714875A (en) | 2005-06-03 | 2005-06-03 | Medical self air exhausting transfusion filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN1714875A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463698C (en) * | 2006-07-12 | 2009-02-25 | 贾宇东 | Versatile exhausting box for blood transfusion |
| CN101972503A (en) * | 2010-11-04 | 2011-02-16 | 杭州科诺过滤器材有限公司 | Hopper dripping filter of high-flux infusion apparatus |
| CN105056350A (en) * | 2015-08-27 | 2015-11-18 | 浙江康康医疗器械有限公司 | Bubble-preventing automatic-air-exhausting liquid medicine filter for infusion apparatus |
| CN105479733A (en) * | 2015-12-31 | 2016-04-13 | 山东中保康医疗器具有限公司 | Torque welding method of precise medicine liquid filter liquid-phase film |
| CN104288874B (en) * | 2013-07-19 | 2017-09-26 | 广东龙心医疗器械有限公司 | Disposable automatic exhaust stops liquid transfusion device and method |
| WO2021093055A1 (en) * | 2019-11-11 | 2021-05-20 | 惠州海卓科赛医疗有限公司 | Medical liquid inlet assembly, medical flushing device, and medical water jet cutter |
-
2005
- 2005-06-03 CN CN 200510075632 patent/CN1714875A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463698C (en) * | 2006-07-12 | 2009-02-25 | 贾宇东 | Versatile exhausting box for blood transfusion |
| CN101972503A (en) * | 2010-11-04 | 2011-02-16 | 杭州科诺过滤器材有限公司 | Hopper dripping filter of high-flux infusion apparatus |
| CN101972503B (en) * | 2010-11-04 | 2012-07-25 | 杭州科诺过滤器材有限公司 | Hopper dripping filter of high-flux infusion apparatus |
| CN104288874B (en) * | 2013-07-19 | 2017-09-26 | 广东龙心医疗器械有限公司 | Disposable automatic exhaust stops liquid transfusion device and method |
| CN105056350A (en) * | 2015-08-27 | 2015-11-18 | 浙江康康医疗器械有限公司 | Bubble-preventing automatic-air-exhausting liquid medicine filter for infusion apparatus |
| CN105479733A (en) * | 2015-12-31 | 2016-04-13 | 山东中保康医疗器具有限公司 | Torque welding method of precise medicine liquid filter liquid-phase film |
| WO2021093055A1 (en) * | 2019-11-11 | 2021-05-20 | 惠州海卓科赛医疗有限公司 | Medical liquid inlet assembly, medical flushing device, and medical water jet cutter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |