CN106730167A - Transfusion device liquid closes anti-blood back automatic stop valve only - Google Patents
Transfusion device liquid closes anti-blood back automatic stop valve only Download PDFInfo
- Publication number
- CN106730167A CN106730167A CN201611150096.5A CN201611150096A CN106730167A CN 106730167 A CN106730167 A CN 106730167A CN 201611150096 A CN201611150096 A CN 201611150096A CN 106730167 A CN106730167 A CN 106730167A
- Authority
- CN
- China
- Prior art keywords
- dropping funnel
- liquid
- lower body
- cone
- fluid chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000007788 liquid Substances 0.000 title claims abstract description 60
- 239000008280 blood Substances 0.000 title claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 210000004369 blood Anatomy 0.000 abstract description 6
- 210000003462 vein Anatomy 0.000 abstract description 3
- 210000001124 body fluid Anatomy 0.000 abstract 1
- 239000010839 body fluid Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003814 drug Substances 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
- A61M5/16881—Regulating valves
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- External Artificial Organs (AREA)
Abstract
A kind of transfusion device liquid closes anti-blood back automatic stop valve only,Including dropping funnel upper body,Dropping funnel lower body,Feed tube,Drain pipe,It is oriented to stock,Top position-limited rack,Buoy valve element,Only liquid cone and buffer sealing part,Liquid-tight envelope taper hole is provided with out in the bottom surface of dropping funnel lower body,Feed tube is sealingly fixed to dropping funnel upper body upper end and is interlinked with intracoelomic cavity on dropping funnel,Drain pipe is sealingly fixed to dropping funnel lower body bottom and is interlinked with the fluid chamber of dropping funnel lower body,Fairlead frame is arranged in the fluid chamber of dropping funnel lower body,Top position-limited rack is sleeved on the end suitable for reading of dropping funnel lower body fluid chamber,Buoy valve element is moving up and down to be sleeved in guiding stock,The upper end of buoy valve element is spacing by top position-limited rack,Only the combination of liquid cone and buffer sealing part is fixed on the lower end of buoy valve element by fixed cover,Only the taper of liquid cone lower end cone is identical with the taper for going out liquid-tight envelope taper hole.This automatic stop valve can reliablely and stablely prevent the blood in human vein blood vessel from flowing back, and simple structure is easy to use.
Description
Technical field:
The invention belongs to medical instruments field, and in particular to a kind of net automatic stop valve of the liquid of medical Transfusion device.
Background technology：
Transfusion is accepted extensively as a kind of conventional treatment means by doctor and patient.Work as medicine when clinically infusing
When liquid in bottle is finished or medicine bottle is less than infusion unit titrimeter, according to P=ρ gh, the pressure of whole transfusion device inner liquid medicine diminishes, directly
During to the blood pressure for being less than human body, the phenomenon of blood backflow just occurs.Many automatic liquid-stopping anti-blood backs are disclosed both at home and abroad
Transfusion device patent, wherein most be all Murphy bottom of the tube set a device similar to check valve, but this kind
Check valve has been verified the effect for having no expected anti-blood back, and thrombosis is easily caused all the better；More also due to stopping liquid
It is height-limited to cause only liquid effect on driving birds is not good, complex manufacturing technology, it is more expensive to manufacture and the reason such as is difficult to mass produce not by market
Accreditation.A kind of automatic exhausting anti-blood backflow infusion device and its medical Transfusion device are disclosed in Chinese patent 201220277966.6,
Including staving, tight bung, water inlet pipe, outlet pipe, the vertical position-limited rack of both ends open, buoy, the elastic membrane covered on staving
Piece；The water inlet pipe is connected through bung with staving, and the outlet pipe is connected through staving bottom with staving；Opened on the bung
There is at least one steam vent, closely the hydrophobic filter film that blocks water is coated with steam vent；The vertical position-limited rack is fixed on staving
On, and gap is formed between inner wall of barrel；The buoy is just stuck in vertical position-limited rack, can only be up and down, elastic membrane
Piece is closely pasted onto buoy bottom, and after staving inner liquid medicine stream is complete, buoy avales and automatically, and it is negative that the liquid below device is produced
Pressure pulling force stretches the flexible sheet of buoy bottom, until blocking the water inlet of outlet pipe so that all medicines below the present apparatus
Liquid complete agravity, so as to reach the effect of automatic liquid-stopping anti-blood back.But find in actual use, due to flexible sheet with it is defeated
Contact surface between the water inlet of liquid device outlet pipe is plane, after staving inner liquid medicine stream is complete, due to the effect of human vein pressure
And liquid has the effect of phase counterdiffusion, contact plane is bigger, and pressure is bigger, so as to cause the flexible sheet of buoy bottom and go out
The water inlet of water pipe can not be fully sealed, and tiny gap be still suffered under pressure, and cause buoy both sides residual
A small amount of liquid flowed slowly into from gap, maintain slow transfusion state, it is impossible to reach completely stop liquid blood back effect.
For drawbacks described above, applicant will stop liquid-tight diaphragm by transfusion device planar-type in the prior art by studying for a long period of time
Floating cone seals structure is changed to, the effect for stopping liquid blood back completely is reached, existing technical problem is perfectly solved.
The content of the invention
Anti-blood back automatic stop valve is closed only the invention aims to provide a kind of transfusion device liquid, and it can be in transfusion device
Be automatically switched off after liquid is net, at the same can prevent dropping liquid it is defeated it is net after blood back, simple structure, dependable performance makes easy to use.
A kind of transfusion device liquid closes anti-blood back automatic stop valve only, it is characterized in that：Including dropping funnel upper body, dropping funnel lower body, enter
Liquid pipe, drain pipe, guiding stock, top position-limited rack, only buoy valve element, liquid cone and buffer sealing part, in the upper of dropping funnel lower body
End is provided with annular groove, and the lower end sealing fixing card of dropping funnel upper body is provided with out liquid adapter, drop in annular groove in the lower end of dropping funnel lower body
The inner chamber of bucket lower body is fluid chamber, and liquid-tight envelope taper hole is provided with out on the bottom surface of the fluid chamber of dropping funnel lower body, goes out liquid-tight envelope taper hole
Upper surface be higher than bottom surface, feed tube be sealingly fixed to the feed liquor of dropping funnel upper body upper end adapter in and with the inner chamber of dropping funnel upper body
Interlink, drain pipe is sealingly fixed to going out in liquid adapter and being interlinked with the fluid chamber of dropping funnel lower body for dropping funnel lower body bottom,
Fairlead frame is arranged in the fluid chamber of dropping funnel lower body, and top position-limited rack is sleeved on the end suitable for reading of the fluid chamber of dropping funnel lower body, top
Hold the top surface of position-limited rack by spacing ring axial limiting internal on dropping funnel, buoy valve core housing is mounted in and is oriented in stock, buoy valve element
Can freely up and down be moved being oriented in stock, the upper end of buoy valve element is spacing by top position-limited rack, and only liquid cone is sleeved on buffering
In seal, only the combination of liquid cone and buffer sealing part is fixed on the lower end of buoy valve element by fixed cover, only under liquid cone
The taper of end cone body is identical with the taper for going out liquid-tight envelope taper hole.
Further, only liquid cone and buffer sealing part are combined into one.
Further, steam vent is provided with dropping funnel upper body, steam vent is arranged on dropping funnel on the side of intracoelomic cavity upper end.
Further, the guiding stock encloses structure and forms by axial ribs and radially circle bar, and axial ribs are circumferentially uniformly divided
Cloth, the quantity of axial ribs is more than or equal to, and radially circle bar is axially distributed, and radially the quantity of circle bar is more than or equal to, radially circle bar
Internal diameter size more than axial ribs internal diameter size.
Further, the guiding stock is combined into one with dropping funnel lower body, that is, it is more than three uniform axles to be oriented to stock
To rib, axial ribs are fixed on the madial wall of fluid chamber.
Due to that transfusion device planar-type will stop liquid-tight diaphragm and be changed to floating cone seals structure in the prior art, that is, it is fixed on
The only liquid cone and buffering seal combination physical efficiency of buoy valve element lower end fall with the identical sealing of liquid-tight envelope taper hole that goes out of dropping funnel lower body
Sit, when the liquid level in the fluid chamber of dropping funnel lower body is less than out the upper surface of liquid-tight envelope taper hole, buoy valve element, only liquid cone
The assembly of body, buffer sealing part and fixed cover falls automatically by its own gravity, hermetically falls to being sitting in out liquid-tight envelope taper hole
In, so as to reach the net purpose for being automatically switched off out liquid-tight envelope taper hole of liquid, simultaneously as buoy valve element, only liquid cone, cushion seal
The deadweight of the assembly of part and fixed cover and the collective effect of external atmosphere pressure can be prevented reliablely and stablely in human vein blood vessel
Blood backflow.
Brief description of the drawings：
Fig. 1 is structural representation of the invention；
Fig. 2 is to remove the structural representation behind dropping funnel upper body；
Fig. 3 is dropping funnel lower body and the structural representation for being oriented to stock combination；
Fig. 4 is A-A sectional views in Fig. 3；
In figure：1- dropping funnels upper body；2- dropping funnel lower bodies；3- feed tubes；4- drain pipes；5- is oriented to stock；6- tops position-limited rack；
7- buoy valve elements；8- stops liquid cone；9- buffer sealing parts；10- fixed covers；11- inner chambers；12- spacing rings；13- steam vents；21-
Annular groove；22- goes out liquid adapter；23- fluid chambers；24- bottom surfaces；25- goes out liquid-tight envelope taper hole；51- axial ribs；52- radially encloses bar.
Specific embodiment
Specific embodiment of the invention is exemplified below：
A kind of transfusion device liquid closes anti-blood back automatic stop valve only, and as shown in Figure 1 to 4, it is by dropping funnel upper body 1, dropping funnel
Lower body 2, feed tube 3, drain pipe 4, guiding stock 5, top position-limited rack 6, only buoy valve element 7, liquid cone 8, the and of buffer sealing part 9
Fixed cover 10 is constituted, and annular groove 21 is provided with the upper end of dropping funnel lower body 2, and the lower end sealing fixing card of dropping funnel upper body 1 is mounted in annular groove 21
It is interior, liquid adapter 22 is provided with out in the lower end of dropping funnel lower body 2, the inner chamber of dropping funnel lower body 2 is fluid chamber 23, in the appearance of dropping funnel lower body 2
The bottom surface 24 of sap cavity 23 is provided with out liquid-tight envelope taper hole 25, goes out the upper surface of liquid-tight envelope taper hole 25 higher than bottom surface 24, and water inlet pipe 3 is close
Feud is fixed in the adapter of the feed liquor of the upper end of dropping funnel upper body 1 and is interlinked with the inner chamber 11 of dropping funnel upper body 1, and outlet pipe 4 is hermetically
Going out in liquid adapter 22 and being interlinked with the fluid chamber 23 of dropping funnel lower body 2 for the bottom of dropping funnel lower body 2 is fixed on, stock 5 is oriented to and is set
In the fluid chamber 23 of dropping funnel lower body 2, top position-limited rack 6 is sleeved on the end suitable for reading of the fluid chamber 23 of dropping funnel lower body 2, and top is spacing
By the axial limiting of spacing ring 12 in dropping funnel upper body 1, buoy valve element 7 is sleeved in guiding stock 5 top surface of frame 6, buoy valve element 7
Can freely up and down be moved being oriented in stock 5, the upper end of buoy valve element 7 is spacing by the bottom surface of top position-limited rack 6, only liquid cone 8
It is sleeved in buffer sealing part 9, only the combination of liquid cone 8 and buffer sealing part 9 is fixed on buoy valve element 7 by fixed cover 10
Lower end, only the taper of the lower end cone of liquid cone 8 is identical with the taper for going out liquid-tight envelope taper hole 25, in this example the guiding stock 5
Structure is enclosed by axial ribs 51 and radially circle bar 52 to form, axial ribs 51 are uniformly distributed circumferentially, and the quantity of axial ribs 51 is big
In equal to 3, radially circle bar 52 is axially distributed, and radially the quantity of circle bar 52 is more than or equal to 2, and radially the internal diameter size of circle bar 52 is big
In the internal diameter size of axial ribs 51.
Embodiment 2：Difference from Example 1 is that only liquid cone 8 and buffer sealing part 9 are combined into one, i.e., only
The lower end exposed face of liquid cone 8 is provided with one layer of sealing layer of silica gel.
Embodiment 3：Difference from Example 1 is that the guiding stock 5 is combined into one with dropping funnel lower body 2, that is, lead
It is more than three uniform axial ribs 51 to stock 5, axial ribs 51 are fixed on the madial wall of fluid chamber 23.
Claims (5)
1. a kind of transfusion device liquid closes anti-blood back automatic stop valve only, it is characterized in that：Including dropping funnel upper body (1), dropping funnel lower body
(2), feed tube (3), drain pipe (4), be oriented to stock (5), top position-limited rack (6), buoy valve element (7), only liquid cone (8) ease up
Seal (9) is rushed, annular groove (21) is provided with the upper end of dropping funnel lower body (2), the lower end sealing fixing card of dropping funnel upper body (1) is mounted in ring
In groove (21), liquid adapter (22) is provided with out in the lower end of dropping funnel lower body (2), the inner chamber of dropping funnel lower body (2) is fluid chamber (23),
The bottom surface (24) of the fluid chamber (23) of dropping funnel lower body (2) is provided with out liquid-tight envelope taper hole (25), goes out the upper of liquid-tight envelope taper hole (25)
End face be higher than bottom surface (24), feed tube (3) be sealingly fixed to the feed liquor of dropping funnel upper body (1) upper end adapter in and with dropping funnel upper body
(1) inner chamber (11) interlinks, drain pipe (4) be sealingly fixed to dropping funnel lower body (2) bottom go out liquid adapter (22) in and with
The fluid chamber (23) of dropping funnel lower body (2) interlinks, and is oriented to stock (5) and is arranged in the fluid chamber of dropping funnel lower body (2) (23), top
Position-limited rack (6) is sleeved on the end suitable for reading of the fluid chamber (23) of dropping funnel lower body (2), and the top surface of top position-limited rack (6) is by dropping funnel upper body
(1) spacing ring (12) axial limiting in, buoy valve element (7) is sleeved in guiding stock (5), and buoy valve element (7) is in fairlead
Can freely up and down be moved in frame (5), the upper end of buoy valve element (7) is spacing by top position-limited rack (6), and only liquid cone (8) is sleeved on
In buffer sealing part (9), only the combination of liquid cone (8) and buffer sealing part (9) is fixed on buoy valve element by fixed cover (10)
(7) lower end, only the taper of liquid cone (8) lower end cone is identical with the taper for going out liquid-tight envelope taper hole (25).
2. transfusion device liquid according to claim 1 closes anti-blood back automatic stop valve only, it is characterized in that：Only liquid cone (8)
It is combined into one with buffer sealing part (9).
3. transfusion device liquid according to claim 1 closes anti-blood back automatic stop valve only, it is characterized in that：In dropping funnel upper body
(1) steam vent (13) is provided with, steam vent (13) is arranged on the side of dropping funnel upper body (1) inner chamber upper end.
4. transfusion device liquid according to claim 1 closes anti-blood back automatic stop valve only, it is characterized in that：The guiding stock
(5) enclose structure by axial ribs (51) and radially circle bar (52) to form, axial ribs (51) are uniformly distributed circumferentially, axial ribs
(51) quantity is more than or equal to 3, and radially circle bar (52) is axially distributed, and radially the quantity of circle bar (52) is more than or equal to 2, radially encloses
Internal diameter size of the internal diameter size of bar (52) more than axial ribs (51).
5. transfusion device liquid according to claim 1 closes anti-blood back automatic stop valve only, it is characterized in that：The guiding stock
(5) it is combined into one with dropping funnel lower body (2), that is, it is more than three uniform axial ribs (51), axial ribs to be oriented to stock (5)
(51) it is fixed on the madial wall of fluid chamber (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150096.5A CN106730167A (en) | 2016-12-14 | 2016-12-14 | Transfusion device liquid closes anti-blood back automatic stop valve only |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150096.5A CN106730167A (en) | 2016-12-14 | 2016-12-14 | Transfusion device liquid closes anti-blood back automatic stop valve only |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106730167A true CN106730167A (en) | 2017-05-31 |
Family
ID=58881114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611150096.5A Pending CN106730167A (en) | 2016-12-14 | 2016-12-14 | Transfusion device liquid closes anti-blood back automatic stop valve only |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106730167A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203619973U (en) * | 2013-07-17 | 2014-06-04 | 魏颖德 | Bubble-proof and anti-blood-return infusion dripping bucket |
| CN104826190A (en) * | 2015-05-25 | 2015-08-12 | 祁健 | Light shading and liquid stopping infusion apparatus dropping hopper |
| CN206675783U (en) * | 2016-12-14 | 2017-11-28 | 江苏康友医用器械有限公司 | Transfusion device liquid closes anti-blood back automatic stop valve only |
-
2016
- 2016-12-14 CN CN201611150096.5A patent/CN106730167A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203619973U (en) * | 2013-07-17 | 2014-06-04 | 魏颖德 | Bubble-proof and anti-blood-return infusion dripping bucket |
| CN104826190A (en) * | 2015-05-25 | 2015-08-12 | 祁健 | Light shading and liquid stopping infusion apparatus dropping hopper |
| CN206675783U (en) * | 2016-12-14 | 2017-11-28 | 江苏康友医用器械有限公司 | Transfusion device liquid closes anti-blood back automatic stop valve only |
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