CN104888298A - Blood return prevention device and medical infusion apparatus - Google Patents
Blood return prevention device and medical infusion apparatus Download PDFInfo
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- CN104888298A CN104888298A CN201510130905.5A CN201510130905A CN104888298A CN 104888298 A CN104888298 A CN 104888298A CN 201510130905 A CN201510130905 A CN 201510130905A CN 104888298 A CN104888298 A CN 104888298A
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- blood return
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Abstract
The invention relates to a blood return prevention device and a medical infusion apparatus. The blood return prevention device comprises a cavity. An exhaust hole, a liquid inlet and a liquid outlet are formed in the cavity. A liquid storage tank and a siphon channel are arranged in the cavity. A ventilation hydrophobic water stop film is arranged at the exhaust hole. The liquid storage tank is relatively located above the siphon channel. A hydrophilic liquid stop medicine liquid filter film is arranged on a tank mouth of the liquid storage tank to form a liquid storage chamber. The liquid outlet is formed in the liquid storage chamber. The liquid inlet is formed outside the liquid storage chamber. The siphon channel is provided with a first gap and connected with the outer surface of the hydrophilic liquid stop medicine liquid filter film through the first gap. The blood return prevention device has the advantages of being simple in structure, controllable in time, practical, effective and the like.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to a kind of blood return preventer that can be used for playing in medical Transfusion device blood return prevention effect, also relate to a kind of medical Transfusion device with this anti-blood return device simultaneously.
Background technology
Existing most of medical Transfusion device is in infusion process, and the medicinal liquid in transfusion device flows down always, until medicinal liquid just stops during the gravitational equilibrium of the venous pressure of human body and transfusion device Chinese medicine.After medicinal liquid stops, due to the diffusion of liquid, blood in human body can be back in the conduit of transfusion device, this phenomenon not only can cause that patient's is terrified, need nurse to take time and order about blood flowing human body, but also there is the probability that thrombosis occurs patient, even cause the generation of malpractice.For addressing these problems, existing relevant blood return prevention infusion set both at home and abroad, it mainly adopts following two schemes:
Wherein scheme is: adopt the structure such as ball float or buoy, in infusion process, ball float floats, and medicinal liquid is under the slit flow of ball float or buoy and tube for transfusion; During stopping infusion, ball float sinks, and is blocked in the gap between itself and tube for transfusion, makes the medicinal liquid in tube for transfusion be in weightlessness, reach blood return prevention function with this.If application number is the Chinese patent such as " 200720186093.7 ", " 201120565710.0 ".But, because the effect of human vein pressure and liquid have the effect of phase counterdiffusion, cause blood to flow back in transfusion device, so the effect of blood return prevention cannot be reached, more easily can cause thrombosis like this, more easily cause malpractice.
Another kind of scheme is: close to when having infused, there is a components and block discharging tube front end, or uses flow slowing device to slow down the flow velocity of medicinal liquid, and medicinal liquid is within the longer time, and its flow velocity is less, thus can reach the effect of blood return prevention.If application number is the Chinese patent such as " 201210103462.7 ", " 201210189228.0 ".In current embodiment, discharging tube is all only provided with an inlet, the flow velocity of medicinal liquid is controlled by the structure of the assembly or flow slowing device of partly blocking discharging tube front end, because medicinal liquid flow velocity and pressure, aperture are relevant, process of producing product is made to be difficult to control, complex process, production cost is high, is difficult to the blood return prevention effect reaching expection.
Summary of the invention
The object of the present invention is to provide a kind of structure more simple and more can the blood return preventer of effective blood return prevention, simultaneously also a kind of medical Transfusion device with this anti-blood return device of corresponding proposition.
A kind of blood return preventer that the present invention proposes, it comprises cavity, described cavity is provided with steam vent, inlet and leakage fluid dram, and its inside is provided with reservoir and siphon canal; Described steam vent place is provided with air-permeable, hydrophobic and blocks water film; Described reservoir is positioned at the top of described siphon canal relatively, and is sealed with hydrophilic above its notch and stops liquid liquid medicine filtering membrane, makes it form fluid reservoir; Described leakage fluid dram is arranged in described fluid reservoir, and described inlet is arranged on outside described fluid reservoir; Described siphon canal is provided with the first breach, and it stops liquid medical filtration film outer surface by described first breach with described hydrophilic and connects.
Preferably, described leakage fluid dram is arranged on the top in described fluid reservoir.
Preferably, the canal face of described siphon canal is provided with barrier film.
Preferably, described barrier film is hydrophilic film.
Preferably, the cross section of described siphon canal is V-type.
Preferably, the canal face width degree of described siphon canal is greater than 0mm and is not more than 5mm.
A kind of medical Transfusion device of the corresponding proposition of the present invention, it comprises the blood return preventer of above-mentioned either a program.
Preferably, described medical Transfusion device also comprises bottle plug puncture unit, Murphy pipe, tube for transfusion, venoclysis needle and flow regulator; Described bottle plug puncture unit and Murphy pipe are interconnected; Described blood return preventer is communicated with tube for transfusion with described Murphy pipe respectively; Described tube for transfusion and venoclysis needle are interconnected; Flow regulator is installed on described tube for transfusion outer wall, for controlling the flow velocity of liquid in described tube for transfusion.
Beneficial effect: the blood return preventer that the present invention proposes, its inlet can be communicated with the Murphy pipe of medical Transfusion device, leakage fluid dram is communicated with the tube for transfusion of medical Transfusion device; During use, can instill in described cavity by the medicinal liquid of Murphy pipe by described inlet, medicinal liquid will enter in described reservoir (and fluid reservoir) and siphon canal and also slowly go up; Air in cavity will be discharged from described steam vent through the described air-permeable, hydrophobic film that blocks water on the one hand, on the other hand by described leakage fluid dram discharge (when described hydrophilic stops after liquid liquid medicine filtering membrane soaked completely by medicinal liquid, air cannot be through, namely cannot enter described fluid reservoir, therefore no longer discharge from described leakage fluid dram); When the liquid level of described medicinal liquid exceedes described leakage fluid dram, the medicinal liquid of fluid reservoir inside can be discharged to tube for transfusion (simultaneously from described leakage fluid dram, the medicinal liquid of fluid reservoir outside can stop liquid liquid medicine filtering membrane through described hydrophilic and enter described fluid reservoir inside, and be discharged to tube for transfusion from described leakage fluid dram), now just can start to infuse; When transfusion is near completion, along with the medicinal liquid of the described cavity of instillation reduces, siphonage will be produced, the medicinal liquid that inside cavity remains is siphoned in fluid reservoir along siphon canal, leakage fluid dram is arrived through fluid reservoir, and slowly enter tube for transfusion from described leakage fluid dram, make the malleation that still can keep the long period in tube for transfusion, anti-return blood.The present invention possesses the beneficial effects such as structure is simple, the time is controlled, practical, effective.
Accompanying drawing explanation
Fig. 1 is the perspective view of a kind of blood return preventer embodiment that the present invention proposes.
Fig. 2 is the main TV structure schematic diagram of a kind of blood return preventer embodiment that the present invention proposes.
Fig. 3 is the perspective structure schematic diagram of Fig. 2.
Fig. 4 is the backsight structural representation of Fig. 2.
Fig. 5 is the A-A sectional structure schematic diagram of Fig. 2.
Fig. 6 is the B-B sectional structure schematic diagram of Fig. 2.
Fig. 7 is the structural representation of a kind of medical Transfusion device embodiment that the present invention proposes.
In figure: 10-steam vent, 15-air-permeable, hydrophobic blocks water film, 20-inlet, 30-leakage fluid dram, 40-reservoir, 43-fluid reservoir, 45-hydrophilic stops liquid liquid medicine filtering membrane, 50-siphon canal, 51-first breach, 52-second breach, 55-barrier film, 100-cavity, 200-bottle plug puncture unit, 300-Murphy pipe, 400-tube for transfusion, 500-venoclysis needle, 600-flow regulator.
Detailed description of the invention
For the ease of it will be appreciated by those skilled in the art that the present invention is described further below in conjunction with accompanying drawing and embodiment.
See also Fig. 1 to Fig. 6, a kind of blood return preventer embodiment that the present invention proposes, it comprises cavity 100, described cavity 100 is provided with steam vent 10, inlet 20 and leakage fluid dram 30, and its inside is provided with reservoir 40 and siphon canal 50; Described steam vent 10 place is provided with air-permeable, hydrophobic and blocks water film 15 (this air-permeable, hydrophobic blocks water film 15 can only by air permeable, can not by penetration by liquid); Described reservoir 40 is positioned at the top of described siphon canal 50 relatively, and be sealed with hydrophilic above its notch and stop liquid liquid medicine filtering membrane 45 (this hydrophilic stops liquid liquid medicine filtering membrane 45 can only by penetration by liquid after soaking, can not by air permeable), make it form fluid reservoir 43; Described leakage fluid dram 30 is arranged in described fluid reservoir 43, and described inlet 20 is arranged on outside described fluid reservoir 43; Described siphon canal 50 is provided with the first breach 51, it stops liquid liquid medicine filtering membrane 45 outer surface (in the present embodiment, hydrophilic stops the surface that liquid liquid medicine filtering membrane 45 is positioned at fluid reservoir 43 is inner surface, and the surface be positioned at outside fluid reservoir 43 is outer surface) by described first breach 51 with described hydrophilic and connects.
The blood return preventer that the present embodiment proposes is applicable to (certainly also be applicable in blood exchange transfusion set) in medical Transfusion device, and its inlet 20 can be communicated with the Murphy pipe of medical Transfusion device, leakage fluid dram 30 is communicated with the tube for transfusion of medical Transfusion device; During use, can instill in described cavity 100 by the medicinal liquid of Murphy pipe by described inlet 20, medicinal liquid will enter in described reservoir 40 (and fluid reservoir 43) and siphon canal 50 and also slowly go up; Air in cavity 100 will be discharged from described steam vent 10 through the described air-permeable, hydrophobic film 15 that blocks water on the one hand, on the other hand discharge (when described hydrophilic stops after liquid liquid medicine filtering membrane 45 soaked completely by medicinal liquid by described leakage fluid dram 30, air cannot be through, namely cannot enter described fluid reservoir 43, therefore no longer discharge from described leakage fluid dram 30); When the liquid level of described medicinal liquid exceedes described leakage fluid dram 30, the medicinal liquid of fluid reservoir 43 inside can be discharged to tube for transfusion (simultaneously from described leakage fluid dram 30, the medicinal liquid of fluid reservoir 43 outside can stop liquid liquid medicine filtering membrane 45 through described hydrophilic and enter described fluid reservoir 43 inside, and be discharged to tube for transfusion from described leakage fluid dram 30), now just can start to infuse; When transfusion is near completion, along with the medicinal liquid of the described cavity 100 of instillation reduces, siphonage will be produced, the medicinal liquid of cavity 100 internal residual is siphoned in fluid reservoir 43 along siphon canal 50, leakage fluid dram 30 is arrived through fluid reservoir 43, and slowly enter tube for transfusion from described leakage fluid dram 30, make the malleation that still can keep the long period in tube for transfusion, anti-return blood.The present embodiment possesses the beneficial effects such as structure is simple, the time is controlled (stopped liquid liquid medicine filtering membrane 45 aperture etc. can be changed the blood return prevention time by change cavity 100 bottom volume, hydrophilic), practical, effective.
In order to realize the object of the present embodiment better, the present embodiment is also further optimized to described siphon canal 50.
Concrete, described leakage fluid dram 30 is preferably arranged on the top in described fluid reservoir 43, certainly also can be arranged on the middle part in fluid reservoir 43 or bottom, but the present embodiment is preferably arranged on top, to reach optimum efficiency.
Further, the canal face of described siphon canal 50 is provided with barrier film 55.
The Main Function of described barrier film 55 is to become to close or semi-closed state by described siphon canal 50 capping, described its is made to form one " suction pipe " structure, more effectively medicinal liquid residual bottom described cavity 100 is drained in fluid reservoir 43 by siphonage, and discharges from leakage fluid dram 30.Therefore, the material of the present embodiment to barrier film 55 does not make particular determination, and it can be hydrophilic film also can be hydrophobic membrane.The present embodiment is preferably hydrophilic film.
The cross section of described siphon canal 50 is preferably V-type, more effectively to realize the drain to residual liquor bottom described cavity 100, meanwhile, its canal face width degree is preferably greater than 0mm and is not more than 5mm.
In the present embodiment, in order to enable the residual liquor bottom cavity 100 enter in described siphon canal 50 smoothly, described siphon canal is also provided with the second breach 52; And described second breach 52 is positioned at the bottom of described cavity 100 relatively.
Accordingly, the invention allows for a kind of medical Transfusion device embodiment, it comprises arbitrary possibility in above-mentioned blood return preventer embodiment.
Further, refer to Fig. 7, described medical Transfusion device embodiment its also comprise bottle plug puncture unit 200, Murphy pipe 300, tube for transfusion 400, venoclysis needle 500 and flow regulator 600; Described bottle plug puncture unit 200 and Murphy pipe 300 are interconnected; Above-mentioned blood return preventer is communicated with tube for transfusion 400 with described Murphy pipe 300 respectively; Described tube for transfusion 400 and venoclysis needle 500 are interconnected; Flow regulator 600 is installed on described tube for transfusion 400 outer wall, for controlling the flow velocity of liquid in described tube for transfusion 400.
Be understandable that, the medical Transfusion device embodiment that the present invention proposes possesses the beneficial effect corresponding to above-mentioned blood return preventer embodiment equally, repeats no more here.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a blood return preventer, is characterized in that, comprises cavity, described cavity is provided with steam vent, inlet and leakage fluid dram, and its inside is provided with reservoir and siphon canal; Described steam vent place is provided with air-permeable, hydrophobic and blocks water film; Described reservoir is positioned at the top of described siphon canal relatively, and is sealed with hydrophilic above its notch and stops liquid liquid medicine filtering membrane, makes it form fluid reservoir; Described leakage fluid dram is arranged in described fluid reservoir, and described inlet is arranged on outside described fluid reservoir; Described siphon canal is provided with the first breach, and it stops liquid medical filtration film outer surface by described first breach with described hydrophilic and connects.
2. blood return preventer according to claim 1, is characterized in that, described leakage fluid dram is arranged on the top in described fluid reservoir.
3. blood return preventer according to claim 1, is characterized in that, the canal face of described siphon canal is provided with barrier film.
4. blood return preventer according to claim 3, is characterized in that, described barrier film is hydrophilic film.
5. blood return preventer according to claim 1, is characterized in that, the cross section of described siphon canal is V-type.
6. blood return preventer according to claim 1, is characterized in that, the canal face width degree of described siphon canal is greater than 0mm and is not more than 5mm.
7. blood return preventer according to claim 1, is characterized in that, described siphon canal is also provided with the second breach, and described second breach is positioned at the bottom of described cavity relatively.
8. a medical Transfusion device, is characterized in that, comprises the arbitrary described blood return preventer of claim 1 to 7.
9. medical Transfusion device according to claim 8, is characterized in that, also comprises bottle plug puncture unit, Murphy pipe, tube for transfusion, venoclysis needle and flow regulator; Described bottle plug puncture unit and Murphy pipe are interconnected; Described blood return preventer is communicated with tube for transfusion with described Murphy pipe respectively; Described tube for transfusion and venoclysis needle are interconnected; Flow regulator is installed on described tube for transfusion outer wall, for controlling the flow velocity of liquid in described tube for transfusion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130905.5A CN104888298A (en) | 2015-03-24 | 2015-03-24 | Blood return prevention device and medical infusion apparatus |
| PCT/CN2016/076383 WO2016150319A2 (en) | 2015-03-24 | 2016-03-15 | Device preventing backflow of blood, and medical infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130905.5A CN104888298A (en) | 2015-03-24 | 2015-03-24 | Blood return prevention device and medical infusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104888298A true CN104888298A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510130905.5A Pending CN104888298A (en) | 2015-03-24 | 2015-03-24 | Blood return prevention device and medical infusion apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104888298A (en) |
| WO (1) | WO2016150319A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016150319A2 (en) * | 2015-03-24 | 2016-09-29 | 广州友安医疗科技有限公司 | Device preventing backflow of blood, and medical infusion device |
| JP2021534774A (en) * | 2018-08-31 | 2021-12-16 | フジフイルム アーバイン サイエンティフィック， インコーポレイテッド | Ventilation system for mixers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117186B (en) * | 2019-12-31 | 2023-06-30 | 杭州科百特科技有限公司 | Infusion filter |
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| KR101027081B1 (en) * | 2009-08-18 | 2011-04-05 | 김우진 | Blood backflow prevention device of infusion set |
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| CN102908696A (en) * | 2011-08-01 | 2013-02-06 | 谢世庚 | Backflow liquid medicine filter for preventing blood return |
| CN203598308U (en) * | 2013-11-28 | 2014-05-21 | 电白县康尔美生物科技有限公司 | Anti-backflow precision filtering infusion apparatus |
| CN104107470A (en) * | 2014-07-25 | 2014-10-22 | 广州永创生物科技有限公司 | Transfusion device having automatic filtering, exhausting, automatic stopping and retarding blood return functions |
| CN204543085U (en) * | 2015-03-24 | 2015-08-12 | 广州友安医疗科技有限公司 | Blood return preventer and medical Transfusion device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888298A (en) * | 2015-03-24 | 2015-09-09 | 广州友安医疗科技有限公司 | Blood return prevention device and medical infusion apparatus |
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2015
- 2015-03-24 CN CN201510130905.5A patent/CN104888298A/en active Pending
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2016
- 2016-03-15 WO PCT/CN2016/076383 patent/WO2016150319A2/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101027081B1 (en) * | 2009-08-18 | 2011-04-05 | 김우진 | Blood backflow prevention device of infusion set |
| CN201814935U (en) * | 2010-10-16 | 2011-05-04 | 谢世庚 | Bubble-free drainage blood backflow prevention infusion set |
| CN201969108U (en) * | 2011-01-16 | 2011-09-14 | 谢世庚 | Automatic blood backflow prevention infusion apparatus |
| CN102908696A (en) * | 2011-08-01 | 2013-02-06 | 谢世庚 | Backflow liquid medicine filter for preventing blood return |
| CN203598308U (en) * | 2013-11-28 | 2014-05-21 | 电白县康尔美生物科技有限公司 | Anti-backflow precision filtering infusion apparatus |
| CN104107470A (en) * | 2014-07-25 | 2014-10-22 | 广州永创生物科技有限公司 | Transfusion device having automatic filtering, exhausting, automatic stopping and retarding blood return functions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016150319A2 (en) * | 2015-03-24 | 2016-09-29 | 广州友安医疗科技有限公司 | Device preventing backflow of blood, and medical infusion device |
| WO2016150319A3 (en) * | 2015-03-24 | 2017-02-09 | 广州友安医疗科技有限公司 | Device preventing backflow of blood, and medical infusion device |
| JP2021534774A (en) * | 2018-08-31 | 2021-12-16 | フジフイルム アーバイン サイエンティフィック， インコーポレイテッド | Ventilation system for mixers |
| JP7405835B2 (en) | 2018-08-31 | 2023-12-26 | フジフイルム アーバイン サイエンティフィック， インコーポレイテッド | Filter unit for mixing equipment and method for filtering solutions |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016150319A2 (en) | 2016-09-29 |
| WO2016150319A3 (en) | 2017-02-09 |
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Application publication date: 20150909 |