CN105597229A - Check valve for infusion - Google Patents
Check valve for infusion Download PDFInfo
- Publication number
- CN105597229A CN105597229A CN201510980151.2A CN201510980151A CN105597229A CN 105597229 A CN105597229 A CN 105597229A CN 201510980151 A CN201510980151 A CN 201510980151A CN 105597229 A CN105597229 A CN 105597229A
- Authority
- CN
- China
- Prior art keywords
- transfusion
- limited block
- upper shell
- infusion
- movable piston
- 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
Links
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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/242—Check- or non-return valves designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2433—Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a check valve for infusion. The check valve comprises an upper shell and a lower shell which are connected into a cylindrical inner cavity. An infusion inlet is formed in the upper shell, an infusion outlet is formed in the lower shell, an annular limiting block is arranged in the upper shell, and the portion, between the limiting block and the infusion inlet, of the shell inner cavity forms a liquid collecting area. A partition board is arranged in the lower shell, and the portion, between the partition board and the infusion outlet, of the shell inner cavity forms an infusion buffering area. A plurality of through holes are formed in the circumferential direction of the partition board, a movable piston is disposed between the partition board and the limiting block, a protruding block is arranged in the center of the partition board and sleeved with a return spring, and when the return spring is in a free state, the limiting block abuts against the movable piston so that the check valve can be in a sealed state. The check valve can prevent backflow of medicine liquid, and the problem that if a traditional infusion pipe is not pulled out from a patient body in time, blood will flows back is effectively solved.
Description
Technical field
The check-valves technical field that the present invention relates to infuse, is specially a kind of transfusion check-valves.
Background technology
In infusion process, requirement, by infusion bottle in higher position, makes transfusion with height fallLiquid medicine in pin obtains the pressure that is greater than vein blood vessel, and liquid medicine is flowed into blood vessel, butIn the time of liquid in infusion bottle drug depletion, the liquid medicine pressure drop in transfusion needle with underFall, in the time that liquid medicine pressure is less than vascular pressure, the blood in blood vessel can flow out in woven hose,As not in time by blood backflow in blood vessel, there will be the phenomenon of blood clotting, so can give sickPeople brings unnecessary risk. For this reason, we propose a kind of transfusion check-valves.
Summary of the invention
The object of the present invention is to provide a kind of transfusion check-valves, to solve above-mentioned background technologyThe problem of middle proposition.
For achieving the above object, the invention provides following technical scheme:
A kind of transfusion check-valves, comprises upper shell and lower house, and upper shell is connected with lower houseForm tubular inner chamber, upper shell is provided with transfusion import, and lower house is provided with transfusion outlet, onIn housing, be provided with circular limited block, the shell inner cavity between limited block and transfusion import forms collectionLiquid zone, is provided with dividing plate in lower house, the shell inner cavity between dividing plate and transfusion outlet forms transfusionBuffering area along the multiple through holes of being circumferentially with of dividing plate, is provided with between dividing plate and limited blockMovable piston, is provided with projection in dividing plate center, and is set with back-moving spring on projection, works as resetSpring is in the time of free state, and limited block and movable piston offset and make check-valves in sealing shapeState.
Preferably, the internal diameter of described back-moving spring is less than the diameter of projection.
Preferably, between described limited block and movable piston for taper surface contacts.
Preferably, the taper surface that described limited block and movable piston offset is provided with ring packingCircle.
Preferably, described limited block and the upper shell structure that is formed in one.
Preferably, between described upper shell and lower house, be threaded connection.
Of the present invention being connected in use in liquid-transport pipe-line, liquid medicine flows in shell, whenWhen liquid medicine reaches preset capacity, due to the reason movable piston of fluid pressure and spacingPiece separates automatically, in the time that transfusion finishes, due to take in sail piston and the limited block of fluid pressureAutomatically closed, prevent the backflow of liquid medicine, effectively solve traditional infusion pipe as not in timeBe topic from extracting what cause blood backflow in patient body.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
In figure: 1, upper shell, 2, movable piston, 3, back-moving spring, 4, dividing plate, 5,Limited block, 6, transfusion buffering area, 7, liquid collecting zone, 8, lower house.
Detailed description of the invention
As shown in Figure 1, Fig. 1 is structural representation of the present invention.
With reference to Fig. 1, a kind of transfusion check-valves, comprises upper shell 1 and lower house 8, upper casingBody 1 and lower house 8 are threaded connection and form tubular inner chamber, upper shell 1 be provided with infuse intoMouthful, lower house 8 is provided with transfusion outlet, is provided with circular limited block 5 in upper shell 1, limitPosition piece 5 and upper shell 1 structure that is formed in one, the shell between limited block 5 and transfusion importInner chamber forms liquid collecting zone 7, and liquid collecting zone 7 can be assembled the liquid flowing to from transfusion import to activityPiston 2 produces pressure, is provided with dividing plate 4 in lower house 8, between dividing plate 4 and transfusion outletShell 1 inner chamber forms transfusion buffering area 6, and transfusion buffering area 6 can enter the liquid medicine flowing downRow cache, prevents from causing discomfort to patient, along the multiple through holes of being circumferentially with of dividing plate 4,Wherein through hole rounded distribution centered by projection is used for the circulation of liquid medicine, at dividing plate 4And between limited block 5, be provided with movable piston 2, be provided with projection in dividing plate 4 centers, and projectionUpper suit back-moving spring 3, the diameter that the internal diameter of back-moving spring 3 is less than projection makes back-moving spring3 be socketed on projection more fastening, when back-moving spring 3 is during in free state, limited block 5Offset and make check-valves in sealing state with movable piston 2, limited block 5 and movable piston 2Between be taper surface contact, allow between limited block 5 and movable piston 2, contact closelyr, limitPosition piece 5 is provided with O-ring seal with the taper surface that movable piston 2 offsets.
In specific embodiment, can shell 1 and woven hose be connected by infusion connector and woven hoseConnect, at this moment liquid medicine flows in liquid collecting zone 7, in the time that liquid medicine reaches preset capacity byReason movable piston 2 in fluid pressure separates automatically with limited block 5, in the time that transfusion finishes,Because the piston 2 that takes in sail of fluid pressure is automatically closed with limited block 5, prevent liquid medicineBackflow.
The above, be only preferably detailed description of the invention of the present invention, but protection model of the present inventionEnclose and be not limited to this, any be familiar with those skilled in the art the present invention disclose skillWithin the scope of art, be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereofBecome, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. a transfusion check-valves, is characterized in that, comprises upper shell (1) and lower house(8), upper shell (1) and lower house (8) are connected to form tubular inner chamber, upper shell (1)Be provided with transfusion import, lower house (8) is provided with transfusion outlet, and upper shell is provided with in (1)Circular limited block (5), the shell inner cavity between limited block (5) and transfusion import forms collectionLiquid zone (7), is provided with dividing plate (4) in lower house (8), between dividing plate (4) and transfusion outletShell (1) inner chamber form transfusion buffering area (6), many along being circumferentially with of dividing plate (4)Individual through hole is provided with movable piston (2) between dividing plate (4) and limited block (5), everyPlate (4) center is provided with projection, and on projection, is set with back-moving spring (3), works as back-moving spring(3), in the time of free state, limited block (5) offsets and makes non-return with movable piston (2)Valve is in sealing state.
2. a kind of transfusion check-valves according to claim 1, is characterized in that: instituteThe internal diameter of stating back-moving spring (3) is less than the diameter of projection.
3. a kind of transfusion check-valves according to claim 1, is characterized in that: instituteState between limited block (5) and movable piston (2) as taper surface contacts.
4. a kind of transfusion check-valves according to claim 3, is characterized in that: instituteState limited block (5) and be provided with O-ring seal with the taper surface that movable piston (2) offsets.
5. a kind of transfusion check-valves according to claim 1, is characterized in that: instituteState limited block (5) and upper shell (1) structure that is formed in one.
6. a kind of transfusion check-valves according to claim 1, is characterized in that: instituteState between upper shell (1) and lower house (8) and be threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980151.2A CN105597229A (en) | 2015-12-23 | 2015-12-23 | Check valve for infusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980151.2A CN105597229A (en) | 2015-12-23 | 2015-12-23 | Check valve for infusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105597229A true CN105597229A (en) | 2016-05-25 |
Family
ID=55977921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510980151.2A Pending CN105597229A (en) | 2015-12-23 | 2015-12-23 | Check valve for infusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105597229A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944194A (en) * | 2016-05-28 | 2016-09-21 | 庄华敏 | A nebulizer capable of preventing inverse flow of nebulization liquid |
| CN106621026A (en) * | 2016-12-29 | 2017-05-10 | 四川南格尔生物科技有限公司 | Non-return needle connector |
| CN109529150A (en) * | 2019-01-22 | 2019-03-29 | 田夕会 | A kind of efficient gynecological clinic cleaning device for vagina |
| CN110201298A (en) * | 2019-07-03 | 2019-09-06 | 深圳安特医疗股份有限公司 | Check valve and infusion device |
-
2015
- 2015-12-23 CN CN201510980151.2A patent/CN105597229A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944194A (en) * | 2016-05-28 | 2016-09-21 | 庄华敏 | A nebulizer capable of preventing inverse flow of nebulization liquid |
| CN105944194B (en) * | 2016-05-28 | 2021-11-09 | 庄华敏 | Atomizer with prevent atomized liquid backward flow |
| CN106621026A (en) * | 2016-12-29 | 2017-05-10 | 四川南格尔生物科技有限公司 | Non-return needle connector |
| CN109529150A (en) * | 2019-01-22 | 2019-03-29 | 田夕会 | A kind of efficient gynecological clinic cleaning device for vagina |
| CN110201298A (en) * | 2019-07-03 | 2019-09-06 | 深圳安特医疗股份有限公司 | Check valve and infusion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |