CN105079917A - Automatic anti-bubble liquid-stopping filter - Google Patents
Automatic anti-bubble liquid-stopping filter Download PDFInfo
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- CN105079917A CN105079917A CN201510585354.1A CN201510585354A CN105079917A CN 105079917 A CN105079917 A CN 105079917A CN 201510585354 A CN201510585354 A CN 201510585354A CN 105079917 A CN105079917 A CN 105079917A
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Abstract
An existing medical infusion apparatus, before carrying out puncture on a human body, is subject to an exhaust operation, so as to avoid adverse effects caused bubbles which are generated from an infusion pipeline and enter the human body along with medicine liquid. Later, to reduce the operation of nursing staff and to save nursing time, the invention provides an automatic exhaust device, but bubbles still enter the lower cavity of a medicine liquid filter and enter into a human body along with medicine liquid even through the medicine liquid is subject to exhausting through the upper cavity of the medicine liquid filter; therefore, an effect of preventing bubble cannot be actually achieved. As for the exiting medical infusion apparatus, blood return is caused as medicine liquid in the infusion apparatus runs out if the nursing staff fails to turn off the infusion apparatus or remove a needle in real time before the medicine liquid is completely consumed during the process of infusion. The invention provides an automatic anti-bubble liquid-stopping filter and an infusion apparatus comprising the filter, wherein the filter comprises a filter upper cover, a filter base and a filtering membrane; the filter upper cover is connected to the filter base to form an inner cavity; by virtue of the filtering membrane, the inner cavity is divided into an upper cavity and a lower cavity; a liquid inlet and a liquid outlet are respectively fixedly arranged on the filter upper cover and the filter base; the liquid inlet is arranged on the filter upper cover and is perpendicular to the filter upper cover; the liquid outlet is arranged on the filter base and is perpendicular to the filter base; a valley is fixedly arranged in the filter base; a columnar body is fixedly arranged inside the valley; a slender opening is fixedly arranged in the side face of the columnar body; and the opening is communicated with the liquid outlet. The filter disclosed by the invention can be used for stopping bubbles wider than opening by virtue of the opening, so as to prevent the bubbles from entering a pipeline at the lower end of the filter along with the medicine liquid, therefore achieving the effect of preventing bubbles actually.
Description
Technical field
The present invention relates to a kind of technical field of medical instruments, be specifically related to a kind of Anti-bubble automatic liquid-stopping filter.
Background technology
Existing medical Transfusion device all will be exhausted operation before carrying out human body puncture, to prevent from producing bubble in infusion pipeline, enters human body, cause harmful effect with medicinal liquid.Afterwards, in order to reduce nursing staff's operation, save the nursing time, invented automatic exhaust device, automatic exhaust device was generally arranged in dropping funnel or liquid medicine filter epicoele.Be configured with the transfusion device of automatic exhaust device, do not need nursing staff to be manually exhausted operation, bubble in pipeline can be discharged by transfusion device automatically.But fact proved, the most easily one of position producing bubble---in liquid medicine filter, even if medicinal liquid is through the aerofluxus of liquid medicine filter epicoele, still bubble is had to enter liquid medicine filter cavity of resorption, and together enter human body with medicinal liquid, really cannot reach the effect of Anti-bubble, this is one.
Its two be the transfusion of existing medical Transfusion device when medicinal liquid will be totally lost, the medicinal liquid in transfusion device can flow down always, if now nursing staff's close transfusion device or pull out syringe needle not in time, the medicinal liquid in transfusion device will flow sky.In infusion pipeline after medicinal liquid stream sky, atmospheric pressure is less than human vein pressure, and at this moment, intravenous blood will enter into transfusion device by intravenous needle, causes blood back.
Summary of the invention
The invention provides a kind of Anti-bubble automatic liquid-stopping liquid medicine filter, be mainly used in existing transfusion device, solve transfusion device in prior art can not realize filter cavity of resorption filter bubble, can not the problem of automatic liquid-stopping.
In order to reach above object, the technical scheme taked is:
The invention provides a kind of Anti-bubble automatic liquid-stopping liquid medicine filter, comprise filter cover, filter base and filter membrane, described filter cover and filter base are joined together to form an inner chamber, described inner chamber is separated into epicoele and cavity of resorption by filter membrane, described filter cover and filter base set firmly inlet and liquid outlet respectively, inlet is positioned on filter cover, vertical with filter cover, liquid outlet is positioned on filter base, vertical with filter base, described filter base sets firmly trench, cylinder is set firmly in trench, column side face sets firmly elongated open, opening is communicated with liquid outlet.
Filter of the present invention is provided with described opening, and opening is communicated with liquid outlet, and when filter cavity of resorption produces bubble, bubble will not enter liquid outlet by described opening, flows in the pipeline of lower end, so just can play Anti-bubble effect truly with medicinal liquid.
Between filter cover and filter base, filter membrane is set, described filter membrane has hydrophilic, bubbling point is more than or equal to 5kpa, is less than or equal to 50kpa, after being soaked by medicinal liquid, gas cannot pass through face, medicinal liquid conveying is complete, and under human vein pressure, film tension and face, the gravity of fluid column reaches balance, and medicinal liquid will rest on the position of described filter membrane, and do not continue, toward current downflow, to reach the function of automatic liquid-stopping.
As concrete technical scheme one of, filter cover and filter base are closely cooperated by the mode of bonding, welding or buckle.
As concrete technical scheme three, described filter base also comprises a circle and puts film platform, and the distance of putting between film platform and filter base baseplane is more than or equal to 0.1mm, is less than or equal to 5mm.
As concrete technical scheme four, can propping film muscle on described filter base baseplane.
As concrete technical scheme five, described filter base comprises at least one trench, at least arranges a cylinder in trench.
Preferably, the described trench degree of depth is more than or equal to 1mm, is less than or equal to 20mm.
Preferably, the gap of described trench and cylinder was greater than and equaled 1mm, was less than or equal to 15mm.
Preferably, described cylinder comprises at least one opening, and all openings are all communicated with liquid outlet.
Preferably, described A/F is more than or equal to 0.1mm, is less than or equal to 1mm.
Because described opening is comparatively thin, the bubble that diameter is greater than described A/F will not enter liquid outlet by described opening, enters lower end pipeline immediately, therefore plays the effect of Anti-bubble.
The object of the invention is to also provide a kind of transfusion device, its feature is, comprise described Anti-bubble and stop liquid liquid medicine filter, filter cover is connected with dropping funnel bucket cylinder lower end or conduit, and dropping funnel bucket tube inner chamber or conduit cavity are directly communicated with filter inner chamber.Described transfusion device also comprises the conventional fitment such as bottle plug puncture unit, transfusion catheter, flow regulator, intravenous needle, does not repeat them here.
One of above-mentioned transfusion device, owing to adopting dropping funnel-filter integral structure, removes the transfusion catheter between existing dropping funnel and filter, can be effectively cost-saving.In addition, the connection reducing transfusion catheter just decreases the connecting portion of transfusion device, decreases the probability that bubble produces to a certain extent.
Beneficial effect of the present invention is:
(1) when filter upper end pipeline herb liquid stream is empty, because the gas that soaks cannot by filter membrane, and there is hydrophilic due to filter membrane, therefore, it is possible to hold medicinal liquid in the month, make it can not continue, toward current downflow, to reach the effect of automatic liquid-stopping.During Clinical practice, nursing staff can pull out pin operation to patient the reasonable arrangement time, alleviates the present situation that current medicinal liquid stream sky must pull out pin at once.
(2) special construction of filter base can filter out the bubble of certain diameter, solves the problem that current filter cavity of resorption generation bubble cannot be got rid of, the real object of medicinal liquid containing harm bubble realizing flowing in patient body.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of filter cover of the present invention, only liquid type filter and filter base.
Fig. 2 is the profile of filter base of the present invention.
Fig. 3 is the structural representation of transfusion device described in the embodiment of the present invention one.
Fig. 4 is the structural representation of filter cover described in the embodiment of the present invention three.
Fig. 5 is the structural representation of transfusion device described in the embodiment of the present invention three.
With reference to Fig. 1, wherein 1, filter cover, 2, filter membrane, 3, filter base, 13, inlet.
With reference to Fig. 2, wherein 32, trench, 33, cylinder, 34, opening, 35, liquid outlet, 36, put film platform, 37, baseplane.
With reference to Fig. 3, wherein 41, dropping funnel bucket cylinder, 42, bottle plug puncture unit, 43, transfusion catheter, 44, flow regulator, 45, intravenous needle.
With reference to Fig. 4, wherein 51, inlet.
With reference to Fig. 5, wherein 61, bottle plug puncture unit, 62, dropping funnel, 63, Anti-bubble stops liquid liquid medicine filter, 64, flow regulator, 65, intravenous needle.
Detailed description of the invention
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one:
See figures.1.and.2, Anti-bubble on transfusion device of the present invention stops liquid liquid medicine filter and comprises filter cover 1, filter base 3 and filter membrane 2, described filter cover 1 and filter base 3 are joined together to form an inner chamber, described inner chamber is separated into epicoele and cavity of resorption by filter membrane 2, described filter cover 1 and filter base 3 set firmly inlet 13 and liquid outlet 35 respectively, inlet 13 is positioned on filter cover 1, vertical with filter cover 1, liquid outlet 35 is positioned on filter base 35, vertical with filter base 3, described filter base 3 sets firmly trench 32, a cylinder 33 is set firmly in trench 32, cylinder 33 side sets firmly elongated open 34, opening 34 is communicated with liquid outlet 35.
With reference to Fig. 3, described filter cover 1 is directly communicated with described infusion unit titrimeter bucket cylinder 41 lower end, and dropping funnel bucket cylinder 41 inner chamber is directly communicated with described filter inner chamber.Described transfusion device also comprises bottle stopper puncture, 42, transfusion catheter 43, flow regulator 44, intravenous needle 45.
Filter cover 1 and filter base 3 are closely cooperated by the mode of bonding, welding or buckle.
Described filter base 1 also comprises a circle and puts film platform 36, and the distance of putting between film platform 36 and filter base 3 baseplane 37 is more than or equal to 0.1mm, is less than or equal to 5mm.
Described filter base 3 baseplane 37 sets firmly support film muscle.
The above-mentioned support film muscle putting distance between film platform 37 and filter base 3 baseplane 37 and setting can ensure that filter membrane 2 is unlikely to be affixed on baseplane 37 after being subject to the impulsive force of medicinal liquid, and can ensure again has abundant space to be used for storing medicinal liquid between filter membrane 2 and baseplane 37.
Described filter base 1 comprises at least one trench 32 and at least one cylinder 33.
Preferably, described trench 32 degree of depth is more than or equal to 1mm, is less than or equal to 20mm.
Preferably, described trench 32 was greater than with the gap of cylinder 33 and equaled 1mm, was less than or equal to 15mm.
Preferably, described cylinder 33 comprises at least one opening 34, and all openings 34 are all communicated with liquid outlet 35.
The depth design of described trench 32, the gap design between trench 32 and cylinder 33 have concrete effect, and they can ensure that medicinal liquid has enough bufferings after entering trench, and bubble can better be stopped by the opening 34 on cylinder 33.
Preferably, described opening 34 width is more than or equal to 0.1mm, is less than or equal to 1mm.
Trench 32 has certain height, and medicinal liquid is by after filter membrane 2 inflow filter cavity of resorption, and flow in trench 32 and have an effect cushioned, bubble is easily gathered in trench 32.Simultaneously because described opening 34 is comparatively thin, the bubble that diameter is greater than described opening 34 width will not enter liquid outlet by described opening 34, can not arrive described transfusion device lower end pipeline, therefore play the effect of Anti-bubble.
Embodiment two:
The difference of the present embodiment and embodiment one is filter base 3 baseplane 37 is not arranged to support film muscle.Filter membrane is cut into the filter membrane 2 of suitable size, and be placed on film platform 36, certain width itself is had owing to putting film platform 36, add to put between film platform 36 and baseplane 37 and have certain distance, even if therefore do not arrange support film muscle, in infusion process, filter membrane 2 is the same can not be attached on baseplane 37, flow velocity therefore also can not be caused to reduce or do not descend the situation of liquid.
Embodiment three:
As Fig. 4 and Fig. 5, the difference of the present embodiment and embodiment one is: the diameter of inlet 13 is less than 7mm, is connected with one end of described catheter of transfusion system, and the other end of catheter of transfusion system connects dropping funnel bucket cylinder.
Although the foregoing describe the specific embodiment of the present invention, those skilled in the art should be appreciated that these only illustrate, the scope of protection of the invention is as defined in appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make numerous variations or amendment to these embodiments, but these change and amendment all falls into protection scope of the present invention.
Claims (11)
1. an Anti-bubble automatic liquid-stopping liquid medicine filter, comprise filter cover (1), filter membrane (2) and filter base (3), described filter cover (1) and filter base (3) are joined together to form an inner chamber, described inner chamber is separated into epicoele and cavity of resorption by filter membrane (2), described filter cover (1) and filter base (3) set firmly inlet (13) and liquid outlet (35) respectively, inlet (13) is positioned on filter cover (1), vertical with filter cover (1), liquid outlet (35) is positioned on filter base (3), vertical with filter base (3), described filter base (3) sets firmly trench (32), a cylinder (33) is set firmly in trench (32), cylinder (33) side sets firmly elongated open (34), opening (34) is communicated with liquid outlet (35).
2. filter according to claim 1, it is characterized in that described filter membrane (2) has hydrophilic, bubbling point is more than or equal to 5kpa, is less than or equal to 50kpa, and after being soaked by medicinal liquid, gas cannot pass through face.
3. filter according to claim 1, it is characterized in that described filter base (3) and filter cover (1) by bonding, to weld or the mode of buckle closely cooperates.
4. filter according to claim 1, it is characterized in that described filter base (3) also comprises a circle and puts film platform (36), the distance of putting between film platform (36) and filter base (3) baseplane (37) is more than or equal to 0.1mm, is less than or equal to 5mm.
5. filter according to claim 1, is characterized in that described filter base (3) baseplane (37) structure one there is support film muscle, structure two does not support film muscle.
6. filter according to claim 1, is characterized in that described filter base (3) comprises at least one trench (32) and at least one cylinder (33).
7. filter according to claim 1, is characterized in that described trench (32) is more than or equal to 1mm with the gap of cylinder (33), is less than or equal to 15mm.
8. filter according to claim 1, its feature is more than or equal to 1mm in the degree of depth of described trench (32), is less than or equal to 20mm.
9. filter according to claim 1, it is characterized in that described cylinder (33) comprises at least one opening (34), all openings (34) are all communicated with liquid outlet (35).
10. filter according to claim 1, is characterized in that described opening (34) width is more than or equal to 0.1mm, is less than or equal to 1mm.
11. 1 kinds of transfusion devices, it is characterized in that, comprise filter described in any one in claim 1-12, filter cover (1) is connected with dropping funnel bucket cylinder (41) lower end or transfusion catheter (66), dropping funnel bucket tube inner chamber or conduit cavity are directly communicated with filter inner chamber, and described transfusion device also comprises bottle plug puncture unit (42) or (61), transfusion catheter (43) or (66), flow regulator (44) or (64), intravenous needle (45) or (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585354.1A CN105079917A (en) | 2015-09-16 | 2015-09-16 | Automatic anti-bubble liquid-stopping filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585354.1A CN105079917A (en) | 2015-09-16 | 2015-09-16 | Automatic anti-bubble liquid-stopping filter |
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| Publication Number | Publication Date |
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| CN105079917A true CN105079917A (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510585354.1A Pending CN105079917A (en) | 2015-09-16 | 2015-09-16 | Automatic anti-bubble liquid-stopping filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108114349A (en) * | 2016-11-30 | 2018-06-05 | 武汉智迅创源科技发展股份有限公司 | One kind is protected from light liquid medicine filter and its manufacturing method |
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| CN103272313A (en) * | 2013-05-28 | 2013-09-04 | 上海金塔医用器材有限公司 | Filter with blood return preventing time controllable on medical infusion set and medical infusion set |
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| CN205084116U (en) * | 2015-09-16 | 2016-03-16 | 武汉智迅创源科技发展股份有限公司 | Gas -tight bubble automatic liquid -stopping filter |
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2015
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Patent Citations (5)
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| CN201930309U (en) * | 2010-12-06 | 2011-08-17 | 江西洪达医疗器械集团有限公司 | Bubble-free anti-bleed-return infusion set |
| CN202637636U (en) * | 2012-03-16 | 2013-01-02 | 魏安 | Blood return prevention liquid medicine filter and automatic venting infusion device with same |
| CN103272313A (en) * | 2013-05-28 | 2013-09-04 | 上海金塔医用器材有限公司 | Filter with blood return preventing time controllable on medical infusion set and medical infusion set |
| CN104001227A (en) * | 2014-06-14 | 2014-08-27 | 山东新华安得医疗用品有限公司 | Self-exhausting bubble prevention precise filtering automatic liquid stopping infusion apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108114349A (en) * | 2016-11-30 | 2018-06-05 | 武汉智迅创源科技发展股份有限公司 | One kind is protected from light liquid medicine filter and its manufacturing method |
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Application publication date: 20151125 |
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