CN208958950U - A kind of infusion apparatus - Google Patents
A kind of infusion apparatus Download PDFInfo
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- CN208958950U CN208958950U CN201820616845.7U CN201820616845U CN208958950U CN 208958950 U CN208958950 U CN 208958950U CN 201820616845 U CN201820616845 U CN 201820616845U CN 208958950 U CN208958950 U CN 208958950U
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- valve
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Abstract
The utility model discloses a kind of infusion apparatuses, including puncture outfit, check valve, upper conduit, dropper, dropping funnel, downcomer, flow regulator, emulsion tube, liquid medicine filter and transfusion needle, mutually isolated two accesses of medicine liquid channel and inlet channel are equipped in infusion apparatus, check valve includes check valve body, nonreturn valve core, air-filtering membrane and inlet valve, and the knife notch of one of channel-shaped is equipped on the side wall of the valve end of nonreturn valve core；Venting cavity is in horn-like, and the aperture of the venting cavity of nearly valve end is small, and the aperture of the venting cavity of nearly sealed end is big.It is respectively provided with the sealing bar of the high 0.02mm--0.2mm of a circle, on the outer end face and inner face of sealed end to guarantee the leakproofness of nonreturn valve core.The utility model has the advantages that structure is simple, implements easy, reliable performance, efficiently solve the problems, such as the blocking of infusion apparatus inlet channel, leakage in the prior art, product quality is improved, patient fluid infusion's safety is ensure that, there is important clinical meaning and social value.
Description
Technical field
The utility model relates to medical instruments, more particularly, to a kind of infusion apparatus.
Background technique
Infusion apparatus is a kind of clinically common medical supplies, is equipped with medicine liquid channel, air inlet in currently known infusion apparatus
Two, channel access.Medical fluid flows into human body through medicine liquid channel when infusion, while air enters in medical liquid container through inlet channel, mends
The negative pressure generated in medical liquid container because medical fluid reduces is filled, guarantees continuing for infusion.
However, clinically often there is the accident of the air-filtering membrane blocking or inlet channel leakage in inlet channel, master
After reason is wanted first is that medical staff injects medical fluid into medical liquid container when making up a prescription or dosing, non-back suction goes out in medical liquid container empty
Gas causes to generate positive pressure in medical liquid container, and medical fluid flows into inlet channel, and positive pressure forces medical fluid to infiltrate air-filtering membrane；Mainly
Reason is second is that due to just starting to be infused, and without negative pressure in infusion vessel, part medical fluid can be flowed into inlet channel, while inlet channel
In the hydrophobicity of air-filtering membrane be difficult to control because of production technology, some air-filtering membrane hydrophobicitys are poor, when medical fluid contact it is empty
Direct invasion air-filtering membrane when gas filter membrane.
Two above main cause is all to cause extraneous air that can not wear after infiltrating due to air-filtering membrane by medical fluid
Air permeable filter membrane enters in medical liquid container through inlet channel, thus make infusion apparatus can not normal air inlet, formed blocking, even
Medical fluid can leak out instead through air-filtering membrane.Therefore, clinically highly desirable to have a kind of simple and row and be effectively infused
Device solves the problems, such as in existing infusion apparatus inlet channel blocking, liquid medicine spill.
Summary of the invention
The purpose of this utility model is to provide one kind can effectively solve the blocking of infusion apparatus inlet channel, leakage in the prior art
The problem of liquid, the infusion apparatus for improving product quality, guaranteeing patient fluid infusion's safety.
Purpose of the utility model is realized as follows:
A kind of infusion apparatus, including puncture outfit, check valve, upper conduit, dropper, dropping funnel, downcomer, flow regulator, latex
Pipe, liquid medicine filter and transfusion needle are equipped with mutually isolated two accesses of medicine liquid channel and inlet channel, unidirectionally in infusion apparatus
Valve includes check valve body, nonreturn valve core, air-filtering membrane and inlet valve, and check valve body is located on the side wall of inlet channel bottom end,
The check valve intracorporal valve chamber connection external world and inlet channel are equipped with sealing station close to the check valve body inner wall of inlet channel in valve chamber
Rank, step-like nonreturn valve core by valve end, excessively end, sealed end form, valve end, excessively end, sealed end outer diameter by small
To being greatly successively in step-like connection, nonreturn valve core and sealed step tight fit, air-filtering membrane are fitted tightly over check valve
On the outer end face of the sealed end of core, the outer wall of the inlet valve of tubulose matches with the inner wall of valve chamber, sets in the centre of nonreturn valve core
There are the extraneous venting cavity with inlet channel of connection, inlet valve and the intracorporal valve chamber of check valve in interference fit, and the court of inlet valve
Inner end edge chokes the outer end face edge of air-filtering membrane, is characterized in: being equipped with together on the side wall of the valve end of nonreturn valve core
The knife notch of channel-shaped；Venting cavity is in horn-like, and the aperture of the venting cavity of nearly valve end is small, the aperture of the venting cavity of nearly sealed end
Greatly.
Circle height is respectively provided on outer end face, sealed end inner face towards air-filtering membrane of the sealed end towards puncture outfit
The sealing bar of 0.02mm--0.2mm, to guarantee the leakproofness of nonreturn valve core.
It is equipped with limit hole in the bottom end of the inlet channel of puncture outfit, the outer diameter of limit hole wraps up the valve end of nonreturn valve core,
The opening size of the knife notch at the depth energy limiter valve end of limit hole causes knife incision when preventing knife notch from opening excessive
Fracture.
The folding nut cap that can freely open or close plunger cavity is equipped in the edge of inlet valve.
Air-filtering membrane uses hydrophobic, and medical fluid is difficult to infiltrate air-filtering membrane, it is more difficult to penetrate air-filtering membrane
And flow out, resistance effect is played, while air-filtering membrane can filter out various particles, bacterium in air, guarantees nothing inside infusion apparatus
Bacterium.The utility model includes puncture outfit, check valve, upper conduit, dropper, dropping funnel, downcomer, flow regulator, emulsion tube, medical fluid
Filter and transfusion needle are that one of knife notch is equipped on the side wall of the valve end of the nonreturn valve core in conventional one-way valve, due to
Nonreturn valve core is made of soft material (such as rubber, silica gel, latex), therefore atmosphere pressure energy offsets the bullet of check valve material itself
Power struts knife notch, and air can pass freely through inlet valve, air-filtering membrane, nonreturn valve core, guarantees that air inlet is unobstructed.Work as medical fluid
When reaching at nonreturn valve core, medical fluid pressure conversion fastens power at valve, adds nonreturn valve core material own resilient, knife notch
It is fastened, medical fluid can not pass through nonreturn valve core.The venting cavity of the utility model is in horn-like, the aperture of the venting cavity of nearly valve end
Less than the aperture of the venting cavity of nearly sealed end, since sealed end need to be bonded air-filtering membrane, the aperture of the venting cavity of nearly sealed end
Greatly, it can guarantee that air-filtering membrane effective filtration area is sufficiently large.Inlet valve and the intracorporal valve chamber of check valve are in interference fit, assembly
When nonreturn valve core, air-filtering membrane successively put to sealed step, inlet valve is pressed into valve chamber after picking glue, the court of inlet valve
Inner end compresses air-filtering membrane and nonreturn valve core.
Therefore, the beneficial effects of the utility model are:
1, air-filtering membrane infiltrated by medical fluid, lead to inlet channel blockage problem: check valve only allows air into,
Medical fluid is not allowed to flow out, therefore, medical fluid can not touch air-filtering membrane, and also just there is no blocked air-filtering membrane by infiltration
The problem of.Even if check valve is just in case there is slight leakage, due to the blocking of check valve, the medical fluid of leakage does not have pressure, air mistake
Filter membrane has hydrophobicity, touches the medical fluid of no pressure, will not be infiltrated；
2, the problem of leaking for medical fluid from inlet channel, the utility model provides triple effective protection means: the first weight:
Check valve only allows air into, and does not allow medical fluid to flow out；Second weight: air-filtering membrane has hydrophobicity, even if check valve ten thousand
One has slight leakage, can also be stopped by air-filtering membrane, plays the second protective effect again, while air-filtering membrane can filter out sky
The various particles of gas, bacterium；Third weight: inlet valve can be opened freely, be closed, and infusion apparatus makes air inlet in use, inlet valve can be closed
Channel is in closed state, plays third protective effect again.
In conclusion the utility model has the advantages that structure is simple, implements easy, reliable performance, efficiently solve
The blocking of infusion apparatus inlet channel, leakage problem in the prior art, improve product quality, ensure that patient fluid infusion's safety, there is weight
The clinical meaning and social value wanted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
Fig. 3 is the cut away view of check valve.
Fig. 4 is the structural schematic diagram of nonreturn valve core；
Fig. 5 is that the structural schematic diagram after 180 degree is rotated in Fig. 4.
Specific embodiment
Below with reference to embodiment and compares attached drawing the utility model is described in further detail.
A kind of infusion apparatus, including puncture outfit 1, check valve 13, upper conduit 5, dropper 6, dropping funnel 7, downcomer 8, flow are adjusted
Device 9, emulsion tube 10, liquid medicine filter 11 and transfusion needle 12 are equipped with mutually isolated medicine liquid channel 15 and air inlet in infusion apparatus 1
14 two, channel access, check valve 13 include check valve body 17, nonreturn valve core 2, air-filtering membrane 3 and inlet valve 4, check valve body
17 are located on the side wall of 14 bottom end of inlet channel, and the valve chamber 18 in check valve body 17 is connected to extraneous and inlet channel 14, in valve chamber
18 close to inlet channel 14 17 inner wall of check valve body be equipped with sealed step 16, step-like nonreturn valve core 2 is by valve end 26, mistake
End 27, the composition of sealed end 23 are spent, valve end 26, excessively end 27, the outer diameter of sealed end 23 are ascending successively in step-like company
It connects, nonreturn valve core 2 and sealed step 16 are fitted close, and air-filtering membrane 3 is fitted tightly over the outer of the sealed end 23 of nonreturn valve core 2
On end face, the outer wall of the inlet valve 4 of tubulose matches with the inner wall of valve chamber 18, and it is extraneous to be equipped with connection in the centre of nonreturn valve core 2
With the venting cavity 22 of inlet channel 14, valve chamber 18 in inlet valve 4 and check valve body 17 is in interference fit, and the court of inlet valve 4
Inner end edge chokes the outer end face edge of air-filtering membrane 3, and one of channel-shaped is equipped on the side wall of the valve end 26 of nonreturn valve core 2
Knife notch 24；Venting cavity 22 is in horn-like, and the aperture of the venting cavity 22 of nearly valve end 26 is small, the venting cavity 21 of nearly sealed end 23
Aperture it is big.
It is respectively provided on outer end face, sealed end 23 inner face towards air-filtering membrane 3 of the sealed end 23 towards puncture outfit 1
The sealing bar 25 of the one high 0.02mm--0.2mm of circle, to guarantee the leakproofness of nonreturn valve core 2.
It is equipped with limit hole 19 in the bottom end of the inlet channel 14 of puncture outfit 1, the outer diameter package nonreturn valve core 2 of limit hole 19
Valve end 26, the opening size of the knife notch 24 at the depth energy limiter valve end 26 of limit hole 19, prevents knife notch 24 opened
When big, cause to be broken at knife notch 24.
The folding nut cap 20 that can freely open or close plunger cavity 21 is equipped in the edge of inlet valve 4.
Air-filtering membrane uses hydrophobic, and medical fluid is difficult to infiltrate air-filtering membrane, it is more difficult to penetrate air-filtering membrane
And flow out, resistance effect is played, while air-filtering membrane can filter out various particles, bacterium in air, guarantees nothing inside infusion apparatus
Bacterium.
Claims (4)
1. a kind of infusion apparatus, including puncture outfit, check valve, upper conduit, dropper, dropping funnel, downcomer, flow regulator, emulsion tube,
Liquid medicine filter and transfusion needle are equipped with mutually isolated two accesses of medicine liquid channel and inlet channel, check valve in infusion apparatus
Including check valve body, nonreturn valve core, air-filtering membrane and inlet valve, check valve body is located on the side wall of inlet channel bottom end, single
To the valve intracorporal valve chamber connection external world and inlet channel, sealing station is equipped with close to the check valve body inner wall of inlet channel in valve chamber
Rank, step-like nonreturn valve core by valve end, excessively end, sealed end form, valve end, excessively end, sealed end outer diameter by small
To being greatly successively in step-like connection, nonreturn valve core and sealed step tight fit, air-filtering membrane are fitted tightly over check valve
On the outer end face of the sealed end of core, the outer wall of the inlet valve of tubulose matches with the inner wall of valve chamber, sets in the centre of nonreturn valve core
There are the extraneous venting cavity with inlet channel of connection, inlet valve and the intracorporal valve chamber of check valve in interference fit, and the court of inlet valve
Inner end edge chokes the outer end face edge of air-filtering membrane, it is characterised in that: is equipped on the side wall of the valve end of nonreturn valve core
The knife notch of one of channel-shaped；Venting cavity is in horn-like, and the aperture of the venting cavity of nearly valve end is small, the hole of the venting cavity of nearly sealed end
Diameter is big.
2. infusion apparatus according to claim 1, it is characterised in that: in outer end face, sealed end of the sealed end towards puncture outfit
The sealing bar of the high 0.02mm--0.2mm of a circle is respectively provided on towards the inner face of air-filtering membrane.
3. infusion apparatus according to claim 1, it is characterised in that: be equipped with limit in the bottom end of the inlet channel of puncture outfit
Hole, the valve end of the outer diameter package nonreturn valve core of limit hole, the opening of the knife notch at the depth energy limiter valve end of limit hole are big
It is small.
4. infusion apparatus according to claim 1, it is characterised in that: on or off can freely be played by being equipped in the edge of inlet valve
Close the folding nut cap of plunger cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820616845.7U CN208958950U (en) | 2018-04-27 | 2018-04-27 | A kind of infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820616845.7U CN208958950U (en) | 2018-04-27 | 2018-04-27 | A kind of infusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208958950U true CN208958950U (en) | 2019-06-11 |
Family
ID=66747060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820616845.7U Active CN208958950U (en) | 2018-04-27 | 2018-04-27 | A kind of infusion apparatus |
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|---|---|
| CN (1) | CN208958950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111870765A (en) * | 2020-07-15 | 2020-11-03 | 中国科学院大学宁波华美医院 | Communicating pipe for color identification transfusion |
-
2018
- 2018-04-27 CN CN201820616845.7U patent/CN208958950U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111870765A (en) * | 2020-07-15 | 2020-11-03 | 中国科学院大学宁波华美医院 | Communicating pipe for color identification transfusion |
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