CN101337098A - Automatic vent intravenous transfusion device for medical purpose - Google Patents
Automatic vent intravenous transfusion device for medical purpose Download PDFInfo
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- CN101337098A CN101337098A CNA2008100715507A CN200810071550A CN101337098A CN 101337098 A CN101337098 A CN 101337098A CN A2008100715507 A CNA2008100715507 A CN A2008100715507A CN 200810071550 A CN200810071550 A CN 200810071550A CN 101337098 A CN101337098 A CN 101337098A
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- exhaustor
- fei shi
- transfusion
- exhaust
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Abstract
The invention provides a medical automatic-exhaust intravenous infusion set and relates to the medical intravenous infusion apparatus. The medical automatic-exhaust intravenous infusion set is characterized that an exhaust pipe is mounted on a Murphy's dropper, one end of the exhaust pipe extends into the middle part of the inner cavity of the Murphy's dropper, and an exhaust cap discharging air instead of liquid is mounted at the other end of the exhaust pipe. The medical automatic-exhaust intravenous infusion set has the advantage of simple and convenient operation, for example, the liquid level automatically rises to the end of the exhaust pipe while the air is automatically discharged from the exhaust pipe without turning the Murphy's dropper over when a medicinal solution enters the Murphy's dropper.
Description
Technical field:
The present invention relates to the medical intravenous infusion set tool.
Background technology:
Intravenous transfusion device is connected in sequence by feed liquor syringe needle, upper tubing, black Fei Shi pipe, following tube for transfusion, liquid medicine filter, scalp acupuncture, and infra tube for transfusion bottom is equipped with flow regulator; With the middle part of the tube for transfusion at present liquid medicine filter of pegging graft, the liquid medicine filter below is connected with the nipple interface by pegging graft, and connects silica gel hose and scalp acupuncture under the nipple interface.The feed liquor syringe needle has the air inlet and the fluid dual pathways, also is communicated with air filter on the air intake duct, and air filter is made up of air inlet medicated cap and medical air filter membrane.
In the time of the intravenous transfusion device transfusion, inventory of gas in tube for transfusion and the black Fei Shi pipe, when the main effect of black Fei Shi pipe was transfusion, people can be by observing the speed that speed is judged medicinal liquid input human body of dripping of medicinal liquid.Medical intravenous infusion set is simple in structure, be easy to use, but also there is inconvenient problem: need before the transfusion earlier tube for transfusion and black Fei Shi pipe to be carried out artificial aerofluxus, in the time of aerofluxus, need earlier the upset of black Fei Shi pipe to be stood upside down, promptly descend the upper end of tube for transfusion to be positioned at top, upper tubing bottom, medicinal liquid injects a black Fei Shi pipe part, after tube for transfusion was discharged under the part air in the black Fei Shi pipe was passed through, again that black Fei Shi pipe is upright, derive by tube for transfusion until medicinal liquid.This method for exhausting is because therefore unsuccessful the or inadequate phenomenon of aerofluxus appears in turning operation often.
Summary of the invention:
The objective of the invention is to overcome above-mentioned defective, a kind of automatic vent intravenous transfusion device for medical purpose is provided.
The solution of the present invention is: at black Fei Shi pipe exhaustor is installed, exhaustor one end stretches into black Fei Shi tube cavity middle part, and the other end is installed with the exhaust cap of not discharge opeing of aerofluxus.
The invention has the advantages that liquid level is raised to the aerofluxus pipe end automatically when medicinal liquid enters black Fei Shi pipe, simultaneously air is discharged by exhaustor automatically, the black Fei Shi pipe that need not to overturn, convenience simple to operation.
Description of drawings:
Accompanying drawing 1 is the present invention's China ink Fei Shi tubular construction sketch map.
Accompanying drawing 2 is a nipple interface structure sketch map.
The specific embodiment:
The present invention is connected in sequence by feed liquor syringe needle, upper tubing (6), black Fei Shi pipe (4), following tube for transfusion (5), liquid medicine filter (9), scalp acupuncture, and infra tube for transfusion (5) middle part is equipped with flow regulator; With the liquid medicine filter (9) of tube for transfusion (5) bottom grafting at present, liquid medicine filter (9) below is connected with nipple interface (7) by pegging graft, and connects silica gel hose (10) and scalp acupuncture under the nipple interface (7).The feed liquor syringe needle has the air inlet and the fluid dual pathways, also is communicated with air filter on the air intake duct, and air filter is made up of air inlet medicated cap and medical air filter membrane (2).
At black Fei Shi pipe (4) exhaustor (3) is installed, exhaustor (3) one ends stretch into black Fei Shi pipe (4) inner chamber middle part, and the other end is installed with the exhaust cap of not discharge opeing of aerofluxus.
China ink Fei Shi pipe (4) upper end or bottom are provided with a circular hole, circular hole internal diameter and exhaustor (3) external diameter interference fit, exhaust cap is made up of air exhaust loop (1) and medical air filter membrane (2), be covered with medical air filter membrane (2) on the exhaust end plane of exhaustor (3), this filter membrane upper surface has air exhaust loop (1) gland of porous capping, and this air exhaust loop (1) driving fit fixed cover is combined on the edge cap seat of exhaustor (3).
Medical air filter membrane (2) is to have hydrophobicity medical micro porouse filter membrane, make by materials such as medical polypropylene, glass fibre because its micropore size is tiny, thus filtering accuracy from 0.05 μ m to 0.5 μ m, block-water performance is from 30kpa to 150kpa.Its performance is then for crossing only liquid of gas.The effect of exhaust cap is to prevent that dust from entering black Fei Shi pipe (4).
Exhaustor (3) material and upper and lower tube for transfusion (5) are similarly plastic tube, have elasticity, and therefore very convenient and black Fei Shi pipe (4) steam vent is realized interference fit and fixed.
During the intravenous transfusion device aerofluxus, the feed liquor syringe needle inserts medicinal fluid bag or medicinal liquid bottle, medicinal liquid flows into upper tubing (6) and enters black Fei Shi pipe (4) inner chamber, because this moment, medicinal liquid continued gravitate, flow into tube for transfusion (5) down, because the density of gas is significantly less than the density of medicinal liquid, gas in black Fei Shi pipe this moment (4) is promptly discharged by exhaust cap by the action of gravity of upper tubing inner liquid medicine, the medicinal liquid that enters down tube for transfusion (5) is owing to relative the slowing down of surface tension effects flow velocity that is subjected to down tube for transfusion (5) tube wall with medicinal liquid, so the gas in the black Fei Shi pipe (4) by the exhaustor rate of discharge obviously faster than tube for transfusion (5) deflation rate down, medicinal liquid was managed (4) inner chamber liquid level at black Fei Shi and was risen rapidly this moment, when liquid level rises to exhaustor (3) and is positioned at the opening of black Fei Shi pipe (4), pressure in black Fei Shi pipe this moment (4) is still greater than atmospheric pressure, and the pressure in the exhaustor still is atmospheric pressure, because the both sides gas of medical air filter membrane (2) can freely communicate, so medicinal liquid liquid level in exhaustor (3) rises, gas is discharged, when liquid level in the exhaustor rises to medical air filter membrane (2) when locating, because medical air filter membrane (2) has water preventing ability, therefore medicinal liquid is sealed, and can not continue to flow out; This moment, black Fei Shi pipe (4) interior residual gas can not continue to discharge, and the liquid level in the simultaneously black Fei Shi pipe (4) can not continue to rise.That is to say atmospheric pressure and the upper tubing fluid column high sum of the pressure of black Fei Shi pipe (4) interior liquid level this moment for the conduction of feed liquor syringe needle, the pressure that exhaustor (3) is positioned at black Fei Shi pipe (4) inner opening place is the atmospheric pressure of exhaust cap conduction and exhaustor (3) fluid column height and the filter membrane power sum that blocks water, and both reach poised state.Promptly realized the automatic vent before the transfusion.
This principle makes intravenous transfusion device avoid the operation sequence of the black Fei Shi pipe of upset (4).
This structure another feature is the liquid outlet channel aperture of internal channel (8) aperture of nipple interface (7) less than the feed liquor syringe needle.
When unconventional transfusion state such as first aid, medicinal liquid is because of needs of medical treatment heavy caliber scalp acupuncture messenger drug flow velocity when too fast, can make the interior negative pressure that produces of black Fei Shi pipe (4) that the liquid level burst is descended, to making the medicinal liquid fluid column suck-back that keeps in the exhaustor (3) enter black Fei Shi pipe (4), cause air to enter thereupon, for avoiding this unconventional state, the liquid outlet channel internal diameter of nipple interface (7) internal channel (8) internal diameter less than the feed liquor syringe needle is set, make the bottom flow less than the top flow, it is too fast to suppress flow velocity, and air suck-back phenomenon can not take place.
Exhaustor (3) by black Fei Shi (4) the upper, middle and lower portion of managing stretch into all can, principle is same.
Can also a clamping switch be set at the middle part of the flexible pipe outside exhaustor (3) are positioned at black Fei Shi pipe (4), on-off action is: after aerofluxus is finished or in transfusion, shut switch, exhaustor (3) is not circulated, can avoid under unexpected discounting of upper tubing or stopping state, gas occurring and sucking in the black Fei Shi pipe (4) by exhaust cap; The medicinal liquid that also can avoid by near the exhaust cap place of closing of switch produces possibility of pollution because of convection current simultaneously.
Claims (3)
1, automatic vent intravenous transfusion device for medical purpose is connected in sequence by feed liquor syringe needle, upper tubing (6), black Fei Shi pipe (4), following tube for transfusion (5), liquid medicine filter (9), scalp acupuncture, and infra tube for transfusion (5) middle part is equipped with flow regulator; With the liquid medicine filter (9) of tube for transfusion (5) bottom grafting at present, liquid medicine filter (9) below is connected with nipple interface (7) by pegging graft, connect silica gel hose (10) and scalp acupuncture under the nipple interface (7), it is characterized in that exhaustor (3) being installed at black Fei Shi pipe (4), exhaustor (3) one ends stretch into black Fei Shi pipe (4) inner chamber middle part, and the other end is installed with the exhaust cap of not discharge opeing of aerofluxus.
2, automatic vent intravenous transfusion device for medical purpose according to claim 1, it is characterized in that black Fei Shi pipe (4) upper end or bottom are provided with a circular hole, circular hole internal diameter and exhaustor (3) external diameter interference fit, exhaust cap is made up of air exhaust loop (1) and medical air filter membrane (2), be covered with medical air filter membrane (2) on the exhaust end plane of exhaustor (3), this filter membrane upper surface has air exhaust loop (1) gland of porous capping, and this air exhaust loop (1) driving fit fixed cover is combined on the edge cap seat of exhaustor (3).
3, automatic vent intravenous transfusion device for medical purpose according to claim 1 and 2 is characterized in that the liquid outlet channel aperture of internal channel (8) aperture of nipple interface (7) less than the feed liquor syringe needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100715507A CN101337098A (en) | 2008-08-11 | 2008-08-11 | Automatic vent intravenous transfusion device for medical purpose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100715507A CN101337098A (en) | 2008-08-11 | 2008-08-11 | Automatic vent intravenous transfusion device for medical purpose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101337098A true CN101337098A (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100715507A Pending CN101337098A (en) | 2008-08-11 | 2008-08-11 | Automatic vent intravenous transfusion device for medical purpose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101337098A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228724A (en) * | 2011-06-11 | 2011-11-02 | 李林风 | Safety infusion set with improved discharge tube structure |
| CN110422460A (en) * | 2019-08-15 | 2019-11-08 | 东莞市博晨塑料科技有限公司 | A kind of water proof bag and preparation method thereof |
| CN110975049A (en) * | 2019-11-18 | 2020-04-10 | 湖南宽为医疗科技有限公司 | Dropping funnel and infusion apparatus with same |
| CN112007238A (en) * | 2020-09-22 | 2020-12-01 | 周莉娅 | Novel nursing infusion pump for general department |
-
2008
- 2008-08-11 CN CNA2008100715507A patent/CN101337098A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228724A (en) * | 2011-06-11 | 2011-11-02 | 李林风 | Safety infusion set with improved discharge tube structure |
| CN110422460A (en) * | 2019-08-15 | 2019-11-08 | 东莞市博晨塑料科技有限公司 | A kind of water proof bag and preparation method thereof |
| CN110422460B (en) * | 2019-08-15 | 2023-11-28 | 东莞市博晨塑料科技有限公司 | Water-proof bag and preparation method thereof |
| CN110975049A (en) * | 2019-11-18 | 2020-04-10 | 湖南宽为医疗科技有限公司 | Dropping funnel and infusion apparatus with same |
| CN112007238A (en) * | 2020-09-22 | 2020-12-01 | 周莉娅 | Novel nursing infusion pump for general department |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |