CN202637636U - Blood return prevention liquid medicine filter and automatic venting infusion device with same - Google Patents
Blood return prevention liquid medicine filter and automatic venting infusion device with same Download PDFInfo
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- CN202637636U CN202637636U CN 201220102934 CN201220102934U CN202637636U CN 202637636 U CN202637636 U CN 202637636U CN 201220102934 CN201220102934 CN 201220102934 CN 201220102934 U CN201220102934 U CN 201220102934U CN 202637636 U CN202637636 U CN 202637636U
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- filter
- blood return
- return prevention
- support
- liquid medicine
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Abstract
The utility model discloses a blood return prevention liquid medicine filter and an automatic venting infusion device with the same. The blood return prevention liquid medicine filter comprises a filter upper cover, a water storage tank, a filter lower cover and a base, wherein the base fixedly connected with the filter upper cover and the filter lower cover, a layer of liquid stop filter membrane is installed in the base and is positioned between the filter lower cover and the filter upper cover, a support with a groove cavity is arranged above the liquid stop filter membrane, a leakage hole is formed in the middle of the bottom of the groove cavity of the support, the support is connected with the base, a water leakage hole is formed on the bottom of the water storage tank, the liquid stop filter membrane is put on the bottom of the groove cavity of the support, the water storage tank is put on the groove cavity of the support to clamp the liquid stop filter membrane, a main water inlet is formed on the exterior of the groove cavity, an upper adapter tube is arranged on the filter upper cover, a lower adapter tube is arranged on the filter lower cover, and a vent hole is formed on the filter upper cover, and a drainage air filter membrane is fixed on the vent hole. The blood return prevention liquid medicine filter is simple in process, is convenient to use, has reliable functions, and can be used for improving the working efficiency of medical personnel.
Description
Technical field
This utility model relates to technical field of medical instruments, is the blood return prevention liquid medicine filter in a kind of infusion apparatus having automatic exhaust specifically.
Background technology
At present, the liquid medicine filter of existing transfusion device has two kinds, a kind of is the filter of disposable infusion set, is directly to filter, and upper connecting tube is perpendicular to filter cover, lower linking tube is perpendicular to the filter lower cover, generally be placed on the place ahead of transfusion device intravenous needle, can only filter the microgranule more than 15 microns, filter membrane is circular, diameter is generally all smaller, generally is not more than 12.5mm; Another kind is accurate filter, can filter the microgranule more than 5 microns, the General Requirements filter area is enough large, generally greater than 350mm2, because area is excessive, for the ease of assembling, so accurate filter is difficult for for directly to filter, therefore all use tray type structure, namely upper connecting tube is all parallel with the upper and lower covers of filter with lower linking tube; In addition, the filter of international standard transfusion device generally all is placed on black Fei Shi pipe bottom; The liquid medicine filter of existing transfusion device is generally at the front end of transfusion vein pin; filter be directly to; medical personnel are difficult for discharging owing to misoperation often can cause existing in the filter cover bubble in use procedure; in order to solve the alveolate problem of depositing in the loam cake; present domestic precision transfusion major part is covered this face in the water inlet of filter; open at least more than one the exhausting window with the hydrophobicity filter membrane, thereby solved the bubble that exists in the loam cake.
At present, existing transfusion device is after the infusion bottle medicinal liquid has flowed, medicinal liquid in the transfusion device just flows down always, until medicinal liquid just stops during the gravitational equilibrium of the venous pressure of human body and transfusion device Chinese medicine, because diffusion, the effect that blood of human body is subject to venous pressure flows in the conduit of transfusion device at once, and this phenomenon causes that not only patient's is terrified, and so that the nurse spends the again aerofluxus etc. of a lot of times, even cause fast formation of thrombosis to cause doctor-patient dispute etc.; For addressing the above problem, Chinese patent CN202113398U, CN201939817U, CN201912530U, CN201871070U, CN201759918U, CN201727806U, CN201727789U, CN201701561U, CN201668789U, CN201643241U, CN201643132U, CN201625277U, CN201414971Y, CN201414966Y, CN201414965Y, CN2666453Y, CN102309798A, CN101927041A, CN202151451U, CN202010326U, the similar patent such as CN102294065A, itself otherwise be the principle of stopping up with buoy, it is the principle with medicinal liquid filter membrane surface tension force and gravitational equilibrium, with the self-closed on a certain position of transfusion device of the medicinal liquid in the transfusion device, so that after the medicinal liquid of below, this position stops to flow, thereby reach the effect of automatic liquid-stopping, the gravity that takes for the medicinal liquid of below, this position can produce the effect of malleation and reach the function of blood return prevention vessel inner blood, actually this is not so, behind this position self-closed, the medicinal liquid of its below has been in the state of complete agravity (losing gravity), " diffusion " that blood exists liquid itself to possess in this moment and the human vas that tube for transfusion communicates, add the effect of venous pressure, cause blood to be back to very soon in the tube for transfusion, therefore, these patented products not possess the blood return prevention function, cause the doctor-patient dispute problem thereby fail really to solve blood back; Recent years, Chinese patent CN201814935U is arranged again, CN202061163U, CN201949451U, CN20187010U, CN101985054A, the similar patent such as CN201930309U, to have adopted the method for a drainage strip that black Fei Shi is managed interior a small amount of debris reaches blood return prevention by the front end of the method introducing scalp acupuncture of syphon drainage effect, be exactly by the minor leakage hole slowly seepage flow into the effect that blood vessel reaches blood return prevention, but, in actual the use, there is following problem in the effect that comes drain to reach blood return prevention with drainage thread, the one, the processing technology more complicated, and drainage thread is foreign body, using at transfusion device is objection, the 2nd, by drain because be medicinal liquid by drainage thread from lower toward eminence stream, because drainage thread is uncontrollable, so the poor effect of drain, qualification rate is not high, and the 3rd, the negative pressure that produces siphonage is to form by the liquid gravity after the sealing, so can't help sometimes desirable, the success rate of product is not high; The product that reaches the blood return prevention function with direct weepage holes seepage simultaneously in actual use, because the control in aperture and making all can not accurately be accomplished, so that the flow velocity of leakage drug is uncontrollable, and because the very little overtension that causes liquid in aperture of weepage holes, so that residual liquid stream gets is very fast, so that debris do not flow, therefore cause product can't reach truly blood return prevention effect.In sum, the product of these two kinds of blood return preventions all is difficult to reliably.
Summary of the invention
The purpose of this utility model provides a kind of simplifying procedures, and can realize repeatedly automatic vent, and blood return prevention is safe and reliable, the blood return prevention liquid medicine filter in the infusion apparatus having automatic exhaust of low cost of manufacture.
The purpose of this utility model is to be achieved through the following technical solutions:
Blood return prevention liquid medicine filter in a kind of infusion apparatus having automatic exhaust, it is characterized in that: described blood return prevention liquid medicine filter comprises filter cover, aqua storage tank, filter lower cover and base, filter cover is fixedly connected with the base upper end, the filter lower cover is fixedly connected with the base bottom, the only liquid filter membrane that one deck can intercept air and automatic liquid-stopping is installed in base and between filter lower cover and filter cover, end the liquid filter membrane above be provided with one with the support of vallecular cavity, centre at the bottom of the support vallecular cavity is provided with weepage holes, support is connected with base, the end of aqua storage tank, be provided with leaking hole, at the bottom of the vallecular cavity of support, be placed with the blood return prevention filter membrane, and be placed on the aqua storage tank of leaking hole on the vallecular cavity of support the blood return prevention filter membrane is blocked, the outside at the vallecular cavity of base inner support is provided with water main inlet port, described filter cover is provided with the upper connecting tube perpendicular to filter cover, cover the lower linking tube that is provided with perpendicular to the filter lower cover under the filter, be provided with at least one steam vent and on steam vent, be fixed with a hydrophobic air-filtering membrane by an air cap at filter cover.
Described base is provided with circular upper cavity and rounded lower portion cavity, connected by support between upper chamber and the lower cavity, support and base integral production form, and the vallecular cavity of support becomes taper type, its medium-height trestle by vallecular cavity with vallecular cavity is consisted of with the rib that base connects.
The diameter of described weepage holes is greater than 0.8mm, and is close to only liquid filter membrane.
Aperture 〉=the 1mm of the leaking hole in the described aqua storage tank.
A kind of infusion apparatus having automatic exhaust, comprise the bottle plug puncture unit with sheath that connects successively, upper conduit, China ink Fei Shi pipe and with the downcomer of actuator, one end of the gas outlet of bottle plug puncture unit is provided with air filter, be connected with female Luer on the downcomer, the other end of female Luer connects the vein scalp acupuncture, it is characterized in that: described blood return prevention liquid medicine filter is installed in the top of described black Fei Shi pipe, upper conduit is connected with the blood return prevention liquid medicine filter, perhaps described blood return prevention liquid medicine filter is installed in the below of described black Fei Shi pipe, and downcomer is connected with the blood return prevention liquid medicine filter.
This utility model compared with prior art has following beneficial effect:
All can not be that the main cause that truly reaches the blood return prevention function is not keep a slow transfusion state when transfusion soon finishes at the automatic liquid-stopping transfusion apparatus described in the background technology, thereby fail to reach the effect of human vas being kept for a long time a malleation, by technical scheme described in the utility model, the automatic exhausting anti-blood backflow function is to realize like this, behind the medicinal liquid inflow filter, because after only the liquid liquid medicine filtering membrane soaks, the air that has intercepted in the filter cover flows in the lower cover, cause the air in the loam cake to pass through steam vent, hydrophobic air-filtering membrane and air cap are drained, thereby reach the self-bleeding function of device; When transfusion soon finishes, after the water main inlet port of most of medicinal liquid in the filter cover by the support periphery flowed, after only liquid wants the most of medicinal liquid of filter membrane to flow, after the gravity of moist filter membrane generation surface tension and the medicinal liquid of below is reached balance, the below medicinal liquid stops to flow, at this moment, medicinal liquid in the aqua storage tank is through leaking hole, blood return prevention filter membrane and weepage holes slowly flow into ends on the liquid filter membrane, speed flows so that below liquid continues to keep slowly, enter in the human vas, reach barotropic state of human vas generation, namely keep a slowly normal infusion state, thereby reach blood return prevention effect in the certain hour; The complete whole process required time of aqua storage tank Chinese medicine liquid stream namely is the blood return prevention time, and this time can prolong by reducing flow velocity and increasing moisture storage capacity two aspects; This utility model technique is simple, and is easy to use, and reliable in function can improve medical personnel's work efficiency greatly.
Description of drawings
Fig. 1 is the structural representation of the blood return prevention liquid medicine filter in this utility model infusion apparatus having automatic exhaust;
Fig. 2 is the structural representation of base in the blood return prevention liquid medicine filter in this utility model infusion apparatus having automatic exhaust;
Fig. 3 is the structural representation of the embodiment one when using of the blood return prevention liquid medicine filter in this utility model infusion apparatus having automatic exhaust;
Fig. 4 is the structural representation () of the embodiment two when using of the blood return prevention liquid medicine filter in this utility model infusion apparatus having automatic exhaust;
Fig. 5 is the structural representation (two) of the embodiment two when using of the blood return prevention liquid medicine filter in this utility model infusion apparatus having automatic exhaust.
The specific embodiment
The below is described in further detail this utility model with reference to the accompanying drawings.
Shown in Fig. 1-2, blood return prevention liquid medicine filter in this utility model infusion apparatus having automatic exhaust, comprise filter cover 1, aqua storage tank 2, filter lower cover 3 and base 9, filter cover 1 is fixedly connected with base 9 upper ends, filter lower cover 3 is fixedly connected with base 9 bottoms, the only liquid filter membrane 4 that one deck can intercept air and automatic liquid-stopping is installed in base 9 and between filter lower cover 3 and filter cover 1, end liquid filter membrane 4 above be provided with one with the support 8 of vallecular cavity, centre at the bottom of support 8 vallecular cavities is provided with weepage holes 10, support 8 is connected with base 9, the end of aqua storage tank 2, be provided with leaking hole 15, at the bottom of the vallecular cavity of support 8, be placed with blood return prevention filter membrane 11, and be placed on the aqua storage tank 2 of leaking hole 15 on the vallecular cavity of support 8 blood return prevention filter membrane 11 is blocked, the outside at the vallecular cavity of base 9 inner supports 8 is provided with water main inlet port 12, described filter cover 1 is provided with the upper connecting tube 13 perpendicular to filter cover 1, filter lower cover 3 is provided with the lower linking tube 14 perpendicular to filter lower cover 3, is provided with at least one steam vent 5 and is fixed with a hydrophobic air-filtering membrane 6 by an air cap 7 on steam vent 5 at filter cover 1.Wherein base 9 is provided with circular upper cavity and rounded lower portion cavity, connected by support 8 between upper chamber and the lower cavity, support 8 forms with base 9 integral productions, and the vallecular cavity of support 8 becomes taper type, its medium-height trestle 8 by vallecular cavity with vallecular cavity is consisted of with the rib that base 9 connects.The diameter of weepage holes 10 is greater than 0.8mm, and is close to only liquid filter membrane 4, the aperture 〉=1mm of the leaking hole 15 in the aqua storage tank 2.
This utility model infusion apparatus having automatic exhaust, comprise successively the bottle plug puncture unit 18 with sheath that connects, upper conduit 17, black Fei Shi pipe 16 and with the downcomer 19 of actuator 23, one end of the gas outlet of bottle plug puncture unit is provided with air filter 20, be connected with female Luer 21 on the downcomer 19, the other end of female Luer 21 connects vein scalp acupuncture 22, above black Fei Shi pipe 16 described blood return prevention liquid medicine filter is installed, upper conduit 17 is connected with the blood return prevention liquid medicine filter, such as Fig. 4-5; Perhaps described blood return prevention liquid medicine filter below black Fei Shi pipe, downcomer 19 is connected with the blood return prevention liquid medicine filter, realizes the automatic exhausting anti-blood backflow function with this, such as Fig. 3.
Operation principle is: after medicinal liquid is in upper connection tube 13 inflow filters of apparatus of the present invention, medicinal liquid flows into from water main inlet port 12 and ends on the liquid filter membrane 4, owing to ending liquid filter membrane 4 effect that intercepts air and the surface tension effects of ending liquid filter membrane 4 are arranged, so that loam cake 1 interior unnecessary air is from steam vent 5, hole on hydrophobic air-filtering membrane 6 and the air cap 7 discharges, after medicinal liquid is full of whole loam cake 1, medicinal liquid is only broken through, and liquid filter membrane 4 enters filter lower cover 3, enter in the tube for transfusion from lower connection tube 14 at last, until the inflow human body, the automatic ventilating function of filter is realized like this; After in last drip enters this filter infusion set, along with after the most of medicinal liquid in the loam cake 1 flowed from water main inlet port 12,2 medicinal liquid progressively slowly flows to by leaking hole 15, blood return prevention filter membrane 11 and weepage holes 10 and ends on the liquid filter membrane in the aqua storage tank, then the inflow filter lower cover 3, until inflow human vas, human vas is produced a positive pressure, thereby reach blood return prevention effect in the certain hour; After all medicinal liquids in the filter loam cake have flowed, owing to ending the effect of the obstruct air of liquid filter membrane 4, add capillary effect so that medicinal liquid stops automatically, thereby realize the effect of automatic liquid-stopping.Because the effect that human vein is pressed, so the infusion set of this filter wants the blood return prevention effect that reaches desirable, just must be placed on above any position of the above vertical height of venous pressure, be difficult for being placed on the terminal location of transfusion device, consider clinical multiple operating position, so that transfusion is safer, this device is placed on black Fei Shi pipe top for best.
Claims (5)
1. the blood return prevention liquid medicine filter in the infusion apparatus having automatic exhaust, it is characterized in that: described blood return prevention liquid medicine filter comprises filter cover (1), aqua storage tank (2), filter lower cover (3) and base (9), filter cover (1) is fixedly connected with base (9) upper end, filter lower cover (3) is fixedly connected with base (9) bottom, the only liquid filter membrane (4) that one deck can intercept air and automatic liquid-stopping is installed in base (9) and between filter lower cover (3) and filter cover (1), be provided with a support with vallecular cavity (8) in the top of ending liquid filter membrane (4), centre at the bottom of support (8) vallecular cavity is provided with weepage holes (10), support (8) is connected with base (9), the end of aqua storage tank (2), be provided with leaking hole (15), at the bottom of the vallecular cavity of support (8), be placed with blood return prevention filter membrane (11), and be placed on the aqua storage tank (2) of leaking hole (15) on the vallecular cavity of support (8) blood return prevention filter membrane (11) is blocked, the outside at the vallecular cavity of base (9) inner support (8) is provided with water main inlet port (12), described filter cover (1) is provided with the upper connecting tube (13) perpendicular to filter cover (1), filter lower cover (3) is provided with the lower linking tube (14) perpendicular to filter lower cover (3), is provided with at least one steam vent (5) and is fixed with a hydrophobic air-filtering membrane (6) at steam vent (5) by an air cap (7) at filter cover (1).
2. the blood return prevention liquid medicine filter in the infusion apparatus having automatic exhaust according to claim 1, it is characterized in that: described base (9) is provided with circular upper cavity and rounded lower portion cavity, connected by support (8) between upper chamber and the lower cavity, support (8) forms with base (9) integral production, the vallecular cavity of support (8) becomes taper type, its medium-height trestle (8) by vallecular cavity with vallecular cavity is consisted of with the rib that base (9) connects.
3. the blood return prevention liquid medicine filter in the described infusion apparatus having automatic exhaust according to claim 1 is characterized in that: the diameter of described weepage holes (10) is greater than 0.8mm, and is close to only liquid filter membrane (4).
4. the blood return prevention liquid medicine filter in the described infusion apparatus having automatic exhaust according to claim 1 is characterized in that: the aperture 〉=1mm of the leaking hole (15) in the described aqua storage tank (2).
5. infusion apparatus having automatic exhaust, comprise the bottle plug puncture unit with sheath (18) that connects successively, upper conduit (17), China ink Fei Shi pipe (16) and with the downcomer (19) of actuator, one end of the gas outlet of bottle plug puncture unit is provided with air filter (20), be connected with female Luer (21) on the downcomer (19), the other end of female Luer (21) connects vein scalp acupuncture (22), it is characterized in that: claim 1 or 2 or 3 or 4 described blood return prevention liquid medicine filters are installed in the top of described black Fei Shi pipe, upper conduit (17) is connected with the blood return prevention liquid medicine filter, perhaps claim 1 or 2 or 3 or 4 described blood return prevention liquid medicine filters are installed in the below of described black Fei Shi pipe, and downcomer (19) is connected with the blood return prevention liquid medicine filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220102934 CN202637636U (en) | 2012-03-16 | 2012-03-16 | Blood return prevention liquid medicine filter and automatic venting infusion device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220102934 CN202637636U (en) | 2012-03-16 | 2012-03-16 | Blood return prevention liquid medicine filter and automatic venting infusion device with same |
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| Publication Number | Publication Date |
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| CN202637636U true CN202637636U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220102934 Expired - Fee Related CN202637636U (en) | 2012-03-16 | 2012-03-16 | Blood return prevention liquid medicine filter and automatic venting infusion device with same |
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| CN (1) | CN202637636U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103301536A (en) * | 2012-03-16 | 2013-09-18 | 魏安 | Automatic exhaust and transfusion device and special blood-return-preventing liquid filter thereof |
| CN103977486A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Blood return prevention time-controllable filter for medical infusion apparatus and medical infusion apparatus |
| CN104324439A (en) * | 2013-07-23 | 2015-02-04 | 郑州昊能科技有限公司 | Automatic stopping acoustic conductance dropping hopper |
| CN104338191A (en) * | 2013-07-24 | 2015-02-11 | 河南忱诺科技有限公司 | Automatic cut-off sound-conduction dripping bucket |
| CN104399141A (en) * | 2014-12-16 | 2015-03-11 | 山东新华安得医疗用品有限公司 | Multi-functional slow-emptying and exhausting infusion apparatus |
| CN105079917A (en) * | 2015-09-16 | 2015-11-25 | 武汉智迅创源科技发展股份有限公司 | Automatic anti-bubble liquid-stopping filter |
| 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 |
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2012
- 2012-03-16 CN CN 201220102934 patent/CN202637636U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301536A (en) * | 2012-03-16 | 2013-09-18 | 魏安 | Automatic exhaust and transfusion device and special blood-return-preventing liquid filter thereof |
| 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 |
| CN103272313B (en) * | 2013-05-28 | 2015-03-04 | 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 |
| 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 |
| CN104324439A (en) * | 2013-07-23 | 2015-02-04 | 郑州昊能科技有限公司 | Automatic stopping acoustic conductance dropping hopper |
| CN104338191A (en) * | 2013-07-24 | 2015-02-11 | 河南忱诺科技有限公司 | Automatic cut-off sound-conduction dripping bucket |
| CN103977486A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Blood return prevention time-controllable filter for medical infusion apparatus and medical infusion apparatus |
| CN104399141A (en) * | 2014-12-16 | 2015-03-11 | 山东新华安得医疗用品有限公司 | Multi-functional slow-emptying and exhausting infusion apparatus |
| CN105079917A (en) * | 2015-09-16 | 2015-11-25 | 武汉智迅创源科技发展股份有限公司 | Automatic anti-bubble liquid-stopping filter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150316 |
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| EXPY | Termination of patent right or utility model |