CN206675783U - 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
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- CN206675783U CN206675783U CN201621374144.4U CN201621374144U CN206675783U CN 206675783 U CN206675783 U CN 206675783U CN 201621374144 U CN201621374144 U CN 201621374144U CN 206675783 U CN206675783 U CN 206675783U
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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 interlinked with intracoelomic cavity on dropping funnel,Drain pipe is sealingly fixed to dropping funnel lower body bottom and interlinked with the fluid chamber of dropping funnel lower body,Guide sleeve 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,Moving up and down be sleeved on of buoy valve element is oriented in 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 backflow in human vein blood vessel, simple in construction, easy to use.
Description
Technical field:
The utility model 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 decoction 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 is all that a device for being similar to check valve, but this kind are set in Murphy's tube bottom
Check valve has been verified the effect for having no expected anti-blood back, easily causes thrombosis all the better；More also due to stopping liquid
It is height-limited cause only liquid it is ineffective, complex manufacturing technology, manufacturing cost it is high-leveled and difficult with large-scale production etc. reason 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, the tight bung covered on staving, water inlet pipe, outlet pipe, the vertical position-limited rack of both ends open, buoy, elastic membrane
Piece；The water inlet pipe connects through bung with staving, and the outlet pipe connects through staving bottom with staving；Opened on the bung
There is at least one steam vent, closely covered with the hydrophobic filter film that blocks water on 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 automatically to be come, and is born caused by the decoction below device
Pulling force is pressed to stretch 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 function that phase counterdiffusion, contact plane is bigger, and pressure is bigger, so as to cause the flexible sheet of buoy bottom with going out
The water inlet of water pipe can not be fully sealed, and still suffer from tiny gap under pressure, and cause buoy both sides residual
A small amount of decoction flowed slowly into from gap, maintain slow transfusion state, be unable 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, reaches the effect for stopping liquid blood back completely, perfectly solves existing technical problem.
Utility model content
The purpose of this utility model is to provide for a kind of transfusion device liquid and closes anti-blood back automatic stop valve only, and it can be defeated
It is automatic after liquid device liquid is net to close, at the same can prevent dropping liquid it is defeated it is net after blood back, simple in construction, dependable performance, make 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, stock, top position-limited rack, only buoy valve element, liquid cone and buffer sealing part are oriented to, 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 the lower end of dropping funnel lower body in annular groove
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 in the feed liquor adapter of dropping funnel upper body upper end and with the inner chamber of dropping funnel upper body
Interlinking, 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,
Guide sleeve 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
Holding the top surface of position-limited rack, buoy valve core housing is in guiding stock, buoy valve element by spacing ring axial limiting internal on dropping funnel
Can freely up and down it 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 by axial ribs and radially circle bar and formed, and axial ribs are circumferentially uniformly divided
Cloth, the quantity of axial ribs are more than or equal to, and radially enclose the quantity that bar is axially distributed, and radial direction encloses bar and are more than or equal to, radially enclose bar
Internal diameter size be 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 in the prior art and be changed to floating cone seals structure, that is, it is fixed on
The only liquid cone and buffering seal combination physical efficiency of buoy valve element lower end and the identical sealing of liquid-tight envelope taper hole that goes out of dropping funnel lower body fall
Sit, when the liquid level in the fluid chamber of dropping funnel lower body is less than 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 be sitting in out liquid-tight envelope taper hole
In, so as to reach the purpose that liquid closes out liquid-tight envelope taper hole automatically only, 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 present utility model；
Fig. 2 is to remove the structural representation behind dropping funnel upper body；
Fig. 3 is structural representation of the dropping funnel lower body with 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.
Embodiment
Specific embodiment of the present utility model 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 formed, 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, and the upper surface for going out liquid-tight envelope taper hole 25 is higher than bottom surface 24, and water inlet pipe 3 is close
Feud is fixed in the feed liquor adapter of the upper end of dropping funnel upper body 1 and 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 sets
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
The top surface of frame 6 is by the axial limiting of spacing ring 12 in dropping funnel upper body 1, and buoy valve element 7, which is sleeved on, to be oriented in stock 5, buoy valve element 7
Can freely up and down it 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 the quantity for radially enclosing 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 sealed silicon glue-line.
Embodiment 3：Difference from Example 1 is that the guiding stock 5 is combined into one with dropping funnel lower body 2, that is, leads
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) is gentle
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 is higher than bottom surface (24), feed tube (3) be sealingly fixed to dropping funnel upper body (1) upper end feed liquor 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 (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 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), which is sleeved on, to be oriented in stock (5), and buoy valve element (7) is in guide sleeve
Can freely up and down it 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 the quantity for radially enclosing bar (52) is more than or equal to 2, radially circle
The internal diameter size of bar (52) is more than the internal diameter size of 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) to be oriented to stock (5), axial ribs
(51) it is fixed on the madial wall of fluid chamber (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621374144.4U CN206675783U (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 |
|---|---|---|---|
| CN201621374144.4U CN206675783U (en) | 2016-12-14 | 2016-12-14 | Transfusion device liquid closes anti-blood back automatic stop valve only |
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| Publication Number | Publication Date |
|---|---|
| CN206675783U true CN206675783U (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621374144.4U Active CN206675783U (en) | 2016-12-14 | 2016-12-14 | Transfusion device liquid closes anti-blood back automatic stop valve only |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730167A (en) * | 2016-12-14 | 2017-05-31 | 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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2016
- 2016-12-14 CN CN201621374144.4U patent/CN206675783U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730167A (en) * | 2016-12-14 | 2017-05-31 | 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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