CN106421943A - Negative pressure drainage apparatus - Google Patents
Negative pressure drainage apparatus Download PDFInfo
- Publication number
- CN106421943A CN106421943A CN201610997009.3A CN201610997009A CN106421943A CN 106421943 A CN106421943 A CN 106421943A CN 201610997009 A CN201610997009 A CN 201610997009A CN 106421943 A CN106421943 A CN 106421943A
- Authority
- CN
- China
- Prior art keywords
- tapping
- feed liquor
- valve
- negative pressure
- pressure ball
- 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.)
- Granted
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Classifications
-
- A61M1/0023—
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
Abstract
The invention discloses a negative pressure drainage apparatus. The negative pressure drainage apparatus comprises a negative pressure ball; the negative pressure ball comprises a liquid feeding end and a liquid discharging end; a drainage pipe is arranged at the liquid feeding end of the negative pressure ball; a liquid discharging pipe is arranged at the liquid discharging end of the negative pressure ball; a liquid feeding one-way valve for realizing one-way conduction from the drainage pipe to the negative pressure ball is arranged on the drainage pipe; and a liquid discharging one-way valve for realizing one-way conduction from the negative pressure ball to the liquid discharging pipe is arranged on the liquid discharging pipe. Through the manner, continuous negative pressure suction is generated by the negative pressure ball, timely, efficient and continuous drainage can be realized, the liquid feeding one-way valve is arranged at the position of the drainage pipe, one-way conduction from the drainage pipe to the negative pressure ball is realized, reverse flow of drainage liquid is prevented, reverse flow infection of the drainage liquid is effectively prevented, the liquid discharging one-way valve is arranged on the liquid discharging pipe, the liquid discharging one-way valve is used for replacing a manual switch, and manual control of switching on or off is not needed during drainage or liquid discharging, so that the operation is simplified.
Description
Technical field
The present invention relates to medical apparatus technical field, especially a kind of depression drainage device.
Background technology
The surgical drainage tube species clinically applied is a lot, have for wound, abdominal cavity, gastrointestinal tract, biliary tract etc..Post operation
Carry out drain, primarily to Post operation time cavity gap dropsy or wound exudate are directed in vitro, prevent postoperative infection and impact wound
Mouth healing, during drain, hydrops needs lasting, effective drain, and will prevent drainage-fluid adverse current, leads to infection,
Therefore depression drainage device is widely used.
General depression drainage device, including negative pressure ball, drainage tube, liquid discharging tube, negative pressure ball respectively with drainage tube and liquid discharging tube
Conducting, being provided between drainage tube and negative pressure ball prevents the check valve of drainage-fluid adverse current, and setting switch on liquid discharging tube, by drain
At pipe insertion drain, flatten negative pressure ball, close the switch on liquid discharging tube, form negative pressure, draw drainage-fluid, then open out again
Close, drainage-fluid is discharged from liquid discharging tube and collects.This kind of drainage device manually the opening or closing of controlling switch, operation is comparatively laborious,
Do not enable automatic conducting or the isolation of negative pressure ball and liquid discharging tube.
Content of the invention
Instant invention overcomes the deficiencies in the prior art, there is provided a kind of depression drainage device, it is provided with one-way valve structures, energy
Effectively drain, it is to avoid drainage-fluid adverse current, carries out opening or closing of tapping automatically, simple to operate.
To achieve these goals, the technical solution used in the present invention is：A kind of depression drainage device, including negative pressure ball, institute
State negative pressure ball and include liquid feeding end and tapping end, the liquid feeding end of described negative pressure ball is provided with drainage tube, and the tapping end of described negative pressure ball sets
There is liquid discharging tube, described drainage tube is provided with to be realized by the feed liquor check valve of drainage tube to negative pressure ball one-way conduction, described liquid discharging tube
It is provided with and realize by the tapping check valve of negative pressure ball to liquid discharging tube one-way conduction.
By such scheme, negative pressure ball produces lasting vacuum suction, timely, efficient, the lasting drain of energy, is drawing
Feed liquor check valve is set at flow tube, realizes by the one-way conduction of drainage tube to negative pressure ball, prevent drainage-fluid adverse current, effectively prevent from drawing
The adverse current infection of flow liquid, liquid discharging tube arranges tapping check valve, substitutes hand switch with tapping check valve, in drain or tapping
When, open or close without Non-follow control, simplify operation.
The further setting of the present invention is：Described tapping check valve includes tapping valve body and tapping valve element, tapping valve body
It is provided with tapping valve pocket, and the tapping import being connected with tapping valve pocket, tapping are exported, described tapping valve element slip is arranged on
Bleeder valve intracavity, described tapping import is conducted with negative pressure ball, and described tapping outlet is conducted with liquid discharging tube, described tapping valve element
Including the tapping valve block of lamellar, described tapping valve block is provided with and prevents tapping with tapping import sealing cooperation, described bleeder valve intracavity
Valve block closes the first position limiting structure of tapping outlet.
By such scheme, tapping valve element sliding is arranged on bleeder valve intracavity, in imbibition, the tapping valve block of lamellar
Upper surface closes tapping import, is in air-tight state, starts tapping, and first extruding negative pressure ball is so that tapping valve block is put to close
Liquid Way out moves, and the first position limiting structure is conflicted tapping valve block, limits tapping valve block and moves, tapping valve block will not close
Tapping exports, and negative pressure ball is turned on liquid discharging tube, and drainage-fluid flows out from negative pressure ball, when negative pressure ball recovers deformation, in the suction of gas
Under power, tapping valve block moves near tapping import direction, and closes tapping import, realizes sealing, and drainage tube can be carried out
Imbibition.
The further setting of the present invention is：Described tapping valve block is extended with tapping with respect to the opposite side near tapping import
Lead, described tapping lead perpendicular to tapping valve block, described first position limiting structure include for keep out tapping valve block
One gripper shoe, described first gripper shoe is arranged on bleeder valve cavity wall and is located between tapping valve block and tapping outlet, described
Tapping valve pocket is separated into tapping upper cavity and tapping lower chamber by the first gripper shoe, and described first gripper shoe is provided with the first groove
With the first pilot hole, described tapping upper cavity is conducted with tapping lower chamber by the first groove, described first pilot hole with put
The guiding sliding cooperation of liquid lead.
By such scheme, the first position limiting structure includes the first gripper shoe, and goes out with tapping positioned at tapping valve block
Between mouthful, it is used for limiting the movement of tapping valve block, prevents it from closing tapping outlet, tapping valve pocket is separated by the first gripper shoe
Become tapping upper cavity and tapping lower chamber, the first gripper shoe is provided with the first pilot hole and the first groove, and tapping upper cavity passes through
First groove is conducted with tapping lower chamber, drainage-fluid conducting flowing, and the first pilot hole is coordinated with tapping lead gap, realizes
The guiding sliding of tapping valve element, saves material.
The further setting of the present invention is：Described negative pressure ball is provided with first annular sealing, outside described tapping valve body
Wall is provided with first annular projection and the first external screw thread, and described first external screw thread is connected with the first clamp nut, and described first
Annular seal is clamped between first annular projection and the first clamp nut.
By such scheme, the first annular sealing of negative pressure ball is pressed on tapping valve body by the first clamp nut
On outer wall, realize the sealing at negative pressure ball tapping end, be easy to extrusion operation.
The further setting of the present invention is：Described feed liquor check valve includes feed liquor valve body and feed liquor spool, feed liquor valve body
It is provided with feed liquor valve pocket, and the feed liquor import being connected with feed liquor valve pocket, feed liquor are exported, described feed liquor spool slip is arranged on
Liquid feed valve intracavity, described feed liquor import is conducted with drainage tube, and described feed liquor outlet is conducted with negative pressure ball, described feed liquor spool
Including the feed liquor valve block of lamellar, described feed liquor valve block is provided with and prevents feed liquor with feed liquor import sealing cooperation, described liquid feed valve intracavity
Valve block closes the second position limiting structure of feed liquor outlet.
By such scheme, feed liquor spool sliding is arranged on liquid feed valve intracavity, when extruding negative pressure ball, in gas
Under pressure, the upper surface of feed liquor valve block closes feed liquor import, is in air-tight state, and when starting drain, negative pressure ball recovers deformation,
So that feed liquor valve block moves near feed liquor Way out under the suction of gas, the second position limiting structure conflict feed liquor valve block, limit
Feed liquor valve block processed moves, and feed liquor valve block will not close feed liquor outlet, and drainage tube is turned on negative pressure ball, and drainage-fluid flows into negative pressure
Ball.
The further setting of the present invention is：Described feed liquor valve block is extended with feed liquor with respect to the opposite side near feed liquor import
Lead, described feed liquor lead perpendicular to feed liquor valve block, described second position limiting structure include for keep out feed liquor valve block
Two gripper shoes, described second gripper shoe is arranged on liquid feed valve cavity wall and is located between feed liquor valve block and feed liquor outlet, described
Feed liquor valve pocket is separated into feed liquor upper cavity and feed liquor lower chamber by the second gripper shoe, and described second gripper shoe is provided with the second groove
With the second pilot hole, described feed liquor upper cavity is conducted with feed liquor lower chamber by the second groove, described second pilot hole with enter
The guiding sliding cooperation of liquid lead.
By such scheme, the second position limiting structure includes the second gripper shoe, and goes out with feed liquor positioned at feed liquor valve block
Between mouthful, it is used for limiting the movement of feed liquor valve block, prevents it from closing feed liquor outlet, feed liquor valve pocket is separated by the second gripper shoe
Become feed liquor upper cavity and feed liquor lower chamber, the second gripper shoe is provided with the second pilot hole and the second groove, and feed liquor upper cavity passes through
Second groove is conducted with feed liquor lower chamber, drainage-fluid conducting flowing, and the second pilot hole is coordinated with feed liquor lead gap, realizes
The guiding sliding of feed liquor spool, saves material.
The further setting of the present invention is：Described negative pressure ball is provided with the second annular seal, outside described feed liquor valve body
Wall is provided with the second annular lug and the second external screw thread, and described second external screw thread is connected with the second clamp nut, and described second
Annular seal is clamped between the second annular lug and the second clamp nut.
By such scheme, the second annular seal of negative pressure ball is pressed on feed liquor valve body by the second clamp nut
On outer wall, realize the sealing of negative pressure ball liquid feeding end, be easy to extrusion operation.
The further setting of the present invention is：Described liquid discharging tube is also associated with fluid bag.
By such scheme, fluid bag is used for collecting drainage-fluid, recycling.
The invention will be further described below in conjunction with the accompanying drawings.
Brief description
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is side structure schematic diagram of the present invention；
Fig. 3 is the A-A generalized section of Fig. 2；
Fig. 4 is the B portion enlarged diagram of Fig. 3；
Fig. 5 is the C portion enlarged diagram of Fig. 3；
Fig. 6 is tapping valve element and the first position limiting structure cooperation schematic diagram；
Fig. 7 is other embodiment one schematic diagram of check valve internal structure in the present invention；
Fig. 8 is other embodiment two schematic diagram of check valve internal structure in the present invention.
Specific embodiment
As shown in figures 1 to 6, a kind of depression drainage device, including negative pressure ball 1, drainage tube 2 and liquid discharging tube 3, negative pressure ball 1 include into
Liquid end 11 and tapping end 12, the liquid feeding end 11 of negative pressure ball 1 and drainage tube 2 are conducted, tapping end 12 and the liquid discharging tube 3 of negative pressure ball 1
It is conducted, drainage tube 2 is provided with to be realized by the feed liquor check valve 4 of drainage tube 2 to negative pressure ball 1 one-way conduction, and liquid discharging tube 3 is provided with
Realize by the tapping check valve 5 of negative pressure ball 1 to liquid discharging tube 3 one-way conduction.
In the present embodiment, tapping check valve 5 includes tapping valve body 51 and tapping valve element 52, and tapping valve body 51 is provided with
Tapping valve pocket 53, and connect with tapping valve pocket 53 tapping import 54, tapping outlet 55, tapping valve element 52 slip is arranged on
In tapping valve pocket 53, tapping import 54 is conducted with negative pressure ball 1, and tapping outlet 55 is conducted with liquid discharging tube 3, and tapping valve element 52 wraps
Include tapping valve block 521 and the tapping lead 522 of lamellar, tapping lead 522 is along tapping valve block 521 near tapping outlet 55
Side is extended, and tapping lead 522 is coordinated with tapping import 54 sealing perpendicular to tapping valve block 521, tapping valve block 521,
The bore with diameter greater than tapping import 54 of tapping valve block 521, being provided with tapping valve pocket 53 prevents from tapping valve block 521 from closing putting
First position limiting structure of liquid outlet 55, the first position limiting structure includes the first gripper shoe 56 for keeping out tapping valve block 521, and first
Gripper shoe 56 be arranged on tapping valve pocket 53 inwall and be located at tapping valve block 521 and tapping outlet 55 between, tapping valve pocket 53 by
First gripper shoe 56 is separated into tapping upper cavity 531 and tapping lower chamber 532, and the first gripper shoe 56 is provided with the first pilot hole
561 and first groove 562, tapping upper cavity 531 is conducted with tapping lower chamber 532 by the first groove 562, the first pilot hole
561 are made up of four spaced straight panels with tapping lead 522 guiding sliding cooperation, the first gripper shoe 56, four straight panels
One end is fixed on the inwall of tapping valve pocket 53, and mobile for limiting tapping valve element 52, the other end surrounds the first pilot hole 561,
First groove 562 extends to the first pilot hole 561 by the inwall of tapping valve pocket 53, is easy to drainage-fluid and passes through.
In the present embodiment, negative pressure ball 1 is provided with first annular sealing 13, and the outer wall of tapping valve body 51 is provided with first
Annular lug 511 and the first external screw thread 512, the first external screw thread 512 is connected with the first clamp nut 61, first annular sealing
13 are clamped between first annular projection 511 and the first clamp nut 61.
In the present embodiment, feed liquor check valve 4 includes feed liquor valve body 41 and feed liquor spool 42, and feed liquor valve body 41 is provided with
Feed liquor valve pocket 43, and connect with feed liquor valve pocket 43 feed liquor import 44, feed liquor outlet 45, feed liquor spool 52 slip is arranged on
In feed liquor valve pocket 53, feed liquor import 44 is conducted with drainage tube 2, and feed liquor outlet 45 is conducted with negative pressure ball 1, and feed liquor spool 42 is wrapped
Include feed liquor valve block 421 and the feed liquor lead 422 of lamellar, feed liquor lead 422 is along feed liquor valve block 421 near feed liquor outlet 45
Side is extended, and feed liquor lead 422 is coordinated with feed liquor import 44 sealing perpendicular to feed liquor valve block 421, feed liquor valve block 421,
The bore with diameter greater than feed liquor import 44 of feed liquor valve block 421, is provided with feed liquor valve pocket 43 and prevents feed liquor valve block 421 closing from living in
Second position limiting structure of liquid outlet 55, the second position limiting structure includes the second gripper shoe 46 for keeping out feed liquor valve block 421, and second
Gripper shoe 46 be arranged on feed liquor valve pocket 43 inwall and be located at feed liquor valve block 421 and feed liquor outlet 45 between, feed liquor valve pocket 43 by
Second gripper shoe 46 is separated into feed liquor upper cavity 431 and feed liquor lower chamber 432, and the second gripper shoe 46 is provided with the second pilot hole
461 and second groove 462, feed liquor upper cavity 431 is conducted with feed liquor lower chamber 432 by the second groove 462, the second pilot hole
461 are made up of four spaced straight panels with feed liquor lead 422 guiding sliding cooperation, the second gripper shoe 46, four straight panels
One end is fixed on the inwall of feed liquor valve pocket 43, and mobile for limiting feed liquor spool 42, the other end surrounds the second pilot hole 461,
Second groove 462 extends to the second pilot hole 461 by the inwall of feed liquor valve pocket 43, is easy to drainage-fluid and passes through.
In the present embodiment, negative pressure ball 1 is provided with the second annular seal 14, and the outer wall of feed liquor valve body 41 is provided with second
Annular lug 411 and the second external screw thread 412, the second external screw thread 412 is connected with the second clamp nut 62, and described second annular is close
Envelope portion is clamped between the second annular lug and the second clamp nut 62.
In the present embodiment, liquid discharging tube 3 is also associated with fluid bag 7.
It is illustrated in figure 7 the other embodiment one realizing drainage-fluid one-way conduction check valve in the present invention：Check valve 8 wraps
Include valve body 81 and valve element 82, valve body 81 is provided with valve pocket 83, and connect with valve pocket 83 import 84, outlet 85, valve element 82
Slip is arranged in valve pocket 83, and import 84 is turned on drainage tube 2 or turned on negative pressure ball 1, and outlet 85 is turned on negative pressure ball 1
Or turn on liquid discharging tube 3, valve element 82 includes valve block 821 and pillar 822, valve block 821 and import 84 sealing cooperation, valve block 821
The bore with diameter greater than import 84, pillar 822, perpendicular to valve block 821, is placed in exporting between 85 and valve block 821, pillar 822
Uniformly arrange in four, it can contact on valve pocket 83, prevents valve block 821 from closing outlet 85.
It is illustrated in figure 8 the other embodiment two realizing drainage-fluid one-way conduction check valve in the present invention：Check valve 9 wraps
Include valve body 91 and valve element 92, valve body 91 is provided with valve pocket 93, and connect with valve pocket 93 import 94, outlet 95, valve element 92
Slip is arranged in valve pocket 93, and import 94 is turned on drainage tube 2 or turned on negative pressure ball 1, and outlet 95 is turned on negative pressure ball 1
Or turn on liquid discharging tube 3, valve element 92 includes valve block 921 and guide pillar 922, valve block 921 and import 94 sealing cooperation, valve block 921
The bore with diameter greater than import 94, guide pillar 922, perpendicular to valve block 921, is placed in exporting between 95 and valve block 921, exports 95
It is extended with convex pipe 96, convex pipe 96 and guide pillar 922 guiding sliding cooperation into valve pocket 91, convex pipe 96 is axially evenly equipped with four along it
Through hole 961, it is easy to drainage-fluid circulation, prevents valve block 921 from closing outlet 95.
Claims (8)
1. a kind of depression drainage device, including negative pressure ball, described negative pressure ball includes liquid feeding end and tapping end, the feed liquor of described negative pressure ball
End is provided with drainage tube, and the tapping end of described negative pressure ball is provided with liquid discharging tube, and described drainage tube is provided with realization by drainage tube to negative pressure
The feed liquor check valve of ball one-way conduction it is characterised in that：It is unidirectional to liquid discharging tube by negative pressure ball that described liquid discharging tube is provided with realization
Logical tapping check valve.
2. depression drainage device according to claim 1 it is characterised in that：Described tapping check valve include tapping valve body and
Tapping valve element, tapping valve body is provided with tapping valve pocket, and connect with tapping valve pocket tapping import, tapping outlet, described put
Liquid valve element slip is arranged on bleeder valve intracavity, and described tapping import is conducted with negative pressure ball, described tapping outlet and liquid discharging tube
It is conducted, described tapping valve element includes the tapping valve block of lamellar, described tapping valve block and tapping import sealing cooperation, described tapping
It is provided with the first position limiting structure preventing tapping valve block from closing tapping outlet in valve pocket.
3. depression drainage device according to claim 2 it is characterised in that：Described tapping valve block is with respect near tapping import
Opposite side be extended with tapping lead, described tapping lead perpendicular to tapping valve block, described first position limiting structure include use
In the first gripper shoe keeping out tapping valve block, described first gripper shoe be arranged on bleeder valve cavity wall and be located at tapping valve block with
Between tapping outlet, described tapping valve pocket is separated into tapping upper cavity and tapping lower chamber by the first gripper shoe, described first
Fagging is provided with the first groove and the first pilot hole, and described tapping upper cavity is conducted with tapping lower chamber by the first groove,
Described first pilot hole and the guiding sliding cooperation of tapping lead.
4. the depression drainage device according to Claims 2 or 3 it is characterised in that：Described negative pressure ball is provided with first annular close
Envelope portion, the outer wall of described tapping valve body is provided with first annular projection and the first external screw thread, and described first external screw thread is connected with
First clamp nut, described first annular sealing is clamped between first annular projection and the first clamp nut.
5. the depression drainage device according to claim 1 or 2 or 3 it is characterised in that：Described feed liquor check valve includes liquid feed valve
Body and feed liquor spool, feed liquor valve body is provided with feed liquor valve pocket, and the feed liquor import being connected with feed liquor valve pocket, feed liquor are exported,
Described feed liquor spool slip is arranged on liquid feed valve intracavity, and described feed liquor import is conducted with drainage tube, the outlet of described feed liquor with
Negative pressure ball is conducted, and described feed liquor spool includes the feed liquor valve block of lamellar, described feed liquor valve block and feed liquor import sealing cooperation, institute
State liquid feed valve intracavity and be provided with the second position limiting structure preventing feed liquor valve block from closing feed liquor outlet.
6. depression drainage device according to claim 5 it is characterised in that：Described feed liquor valve block is with respect near feed liquor import
Opposite side be extended with feed liquor lead, described feed liquor lead perpendicular to feed liquor valve block, described second position limiting structure include use
In the second gripper shoe keeping out feed liquor valve block, described second gripper shoe be arranged on liquid feed valve cavity wall and be located at feed liquor valve block with
Between feed liquor outlet, described feed liquor valve pocket is separated into feed liquor upper cavity and feed liquor lower chamber by the second gripper shoe, described second
Fagging is provided with the second groove and the second pilot hole, and described feed liquor upper cavity is conducted with feed liquor lower chamber by the second groove,
Described second pilot hole and the guiding sliding cooperation of feed liquor lead.
7. depression drainage device according to claim 6 it is characterised in that：Described negative pressure ball is provided with the second ring packing
Portion, the outer wall of described feed liquor valve body is provided with the second annular lug and the second external screw thread, and described second external screw thread is connected with
Two clamp nuts, described second annular seal is clamped between the second annular lug and the second clamp nut.
8. depression drainage device according to claim 1 it is characterised in that：Described liquid discharging tube is also associated with fluid bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997009.3A CN106421943B (en) | 2016-11-11 | 2016-11-11 | Depression drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997009.3A CN106421943B (en) | 2016-11-11 | 2016-11-11 | Depression drainage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106421943A true CN106421943A (en) | 2017-02-22 |
| CN106421943B CN106421943B (en) | 2018-10-19 |
Family
ID=58207766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610997009.3A Active CN106421943B (en) | 2016-11-11 | 2016-11-11 | Depression drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106421943B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20309537U1 (en) * | 2003-06-20 | 2003-08-28 | Ehlert Helmut | Check valve assembly is formed by annular disc with central bore and one-way valve with valve plate covering central bore in first position and which inside cage fastened to disc is movable into second position opening central bore |
| CN2849380Y (en) * | 2005-11-03 | 2006-12-20 | 杨俊波 | Sealing valve for fume exhaustor |
| CN101829370A (en) * | 2010-05-20 | 2010-09-15 | 重庆山外山科技有限公司 | One-way valve for hemodialysis machine |
| CN202490326U (en) * | 2012-03-28 | 2012-10-17 | 成都威力生生物科技有限公司 | Medical check valve |
| CN203694195U (en) * | 2014-02-19 | 2014-07-09 | 陈燕 | Oral cavity negative-pressure drainage device |
| CN206577170U (en) * | 2016-11-11 | 2017-10-24 | 陶崇林 | Depression drainage device |
-
2016
- 2016-11-11 CN CN201610997009.3A patent/CN106421943B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20309537U1 (en) * | 2003-06-20 | 2003-08-28 | Ehlert Helmut | Check valve assembly is formed by annular disc with central bore and one-way valve with valve plate covering central bore in first position and which inside cage fastened to disc is movable into second position opening central bore |
| CN2849380Y (en) * | 2005-11-03 | 2006-12-20 | 杨俊波 | Sealing valve for fume exhaustor |
| CN101829370A (en) * | 2010-05-20 | 2010-09-15 | 重庆山外山科技有限公司 | One-way valve for hemodialysis machine |
| CN202490326U (en) * | 2012-03-28 | 2012-10-17 | 成都威力生生物科技有限公司 | Medical check valve |
| CN203694195U (en) * | 2014-02-19 | 2014-07-09 | 陈燕 | Oral cavity negative-pressure drainage device |
| CN206577170U (en) * | 2016-11-11 | 2017-10-24 | 陶崇林 | Depression drainage device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106421943B (en) | 2018-10-19 |
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