CN2691631Y - Unidirectional three way valve - Google Patents
Unidirectional three way valve Download PDFInfo
- Publication number
- CN2691631Y CN2691631Y CN 200420006982 CN200420006982U CN2691631Y CN 2691631 Y CN2691631 Y CN 2691631Y CN 200420006982 CN200420006982 CN 200420006982 CN 200420006982 U CN200420006982 U CN 200420006982U CN 2691631 Y CN2691631 Y CN 2691631Y
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- CN
- China
- Prior art keywords
- valve
- unidirectional
- valve body
- way valve
- triple
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- 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.)
- Expired - Fee Related
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Abstract
A unidirectional three-way valve is composed of a three-way valve body, unidirectional valve cores and a connector. The three-way valve can be directly arranged on the modular connector of an injector. The unidirectional valve core, imitating the heart mitral valve structure, makes unidirectional valve cores in ingress channel and in egress channel automatically start and close by mutative pressure effect in inner cavity of the three-way valve formed by pumping drainage action of the injector, as a result, which realizes directional controllable diversion of liquid (or gas). Using the design unidirectional three-way valve can predigest pumping drainage operation and enhance operating safety. The unidirectional three-way valve has a terse structure, low manufacture cost and low using cost. The unidirectional three-way valve can be extensively used in medical treatment sanitary and other fields.
Description
Technical field:
This utility model relates to a kind of unidirectional three-way valve, is specially adapted to clinical treatment and uses, and belongs to pharmaceutical sanitary field.
Technical background:
For the patient of thoracic cavity, hydroabdomen, need to adopt the pathology hydrops of patient's breast (abdomen) intracavity that the syringe pump drainage causes because of disease, when water accumulating volume is big, need pump drainage repeatedly.The three way cock of the band rotary valve of using can directly receive on the syringe at present, adopts rotary valve to open different passages and realizes pump drainage.The subject matter of this mode is: troublesome poeration, time are long, often pollute because of the poorly sealed pathologic that causes.
The utility model content:
For addressing this problem, this utility model designs a kind of unidirectional three-way valve, utilize the nonreturn valve core of imitative heart mitral valve apparatus, under the three-way valve inner chamber change pressure effect that the action of the pump drainage of syringe is caused, realize the automatic open and close of pump drainage passage, simplify the pump drainage operation, improved the safety of operation.
The purpose of this utility model is achieved in that
A kind of unidirectional three-way valve, form by triple-valve body, nonreturn valve core and joint, it is the internal taper hole that can cooperate with the syringe modular connection that triple-valve body has an end, is equipped with to have the nonreturn valve core that unidirectional control flows to function, the equidirectional installation of two nonreturn valve cores in all the other holes, two go sides; The step mating holes is arranged at two go sides places, and an end of described union joint is closely in the installation step mating holes.
Bionical nonreturn valve core is the structure of simulation heart mitral valve function, is made up of cylinder valve body, hemispherical valve head, sealing flange etc., and nonreturn valve core is made by rubber or macromolecular material; The half ball valve head has a joint-cutting at least, at the check valve center one blind hole is arranged, and the blind hole bottom is hemispherical and communicates with joint-cutting.
The valve head diameter of nonreturn valve core is less than the cylinder valve diameter, and its sealing flange diameter is greater than valve diameter, cylinder valve body slightly larger in diameter in or equal triple-valve body the spool bore diameter be installed.
There is stepped hole at the big end of union joint center, and it is identical with the aperture that triple-valve body is installed nonreturn valve core; Big end step hole depth is greater than the cylinder valve body and the half ball valve head height degree of nonreturn valve core; Its big end external diameter is slightly larger than the internal diameter of the triple-valve body stepped hole that cooperates with it, and its other end can closely be connected with infusion tube.
As can be seen: this nonreturn valve core has the function of opening automatically or closing at different pressure reduction, and when the hemispherical head end pressure is closed during greater than the blind hole end pressure, otherwise nonreturn valve core is opened.Thereby when this unidirectional three-way valve with after the syringe modular connection cooperates, draw, push away injector push-rod, then in the triple-valve body endoporus, alternately produce negative pressure and malleation, thereby two nonreturn valve cores are are alternately opened and closed, realized being flowed by unidirectional (intermittently) of drawing liquid body.
Adopt hemispherical valve head and inner hole structure to make this check valve stress good, thus the unlatching that makes spool rapidly, close reliable.
This unidirectional three-way valve is simple for structure as can be seen, and is easy to use.
Description of drawings:
Fig. 1: the assembly structure sketch map of unidirectional three-way valve
Fig. 2: use this unidirectional three-way valve to form and take out breast (abdomen) chamber hydrops schematic representation of apparatus
Marginal data:
1. triple-valve body: 11 joints 111 cooperate taper holes 112 intercommunicating pores 12 valve bodies
121 liquid-through holes, 122 step mating holes, 123 seal faces
2. nonreturn valve core: 21 hemispherical valve heads, 211 joint-cuttings, 22 centering cylinders, 23 sealing flanges
24 central blind holes, 25 flange end face, 2 ' feed liquor valve, 2 " tapping valves
3. union joint: 31 cone joint, 32 necking downs, 33 center liquid-through holes, 34 locating flanges
35 component location guide cylinder 36 valve core cases, 37 steps { spool } holes
38 seal faces, 3 ' liquid inlet joint, 3 " draining connectors
4. syringe: 41 cylindrical shells, 42 push rods, 43 outer conehead 44 pistons
5. puncture needle
6. drawing liquid flexible pipe
7. discharge opeing flexible pipe
8. catcher (bag)
The specific embodiment
Go through this patent below in conjunction with legend:
Fig. 1 is a kind of structural representation of this utility model unidirectional three-way valve, and wherein triple-valve body 1 is plastic injection-moulded shaping, and there is the joint 11 of a band internal taper hole 111 at the middle part, and its 6:100 internal taper hole 111 can closely cooperate with the outer conehead of the front end of general syringe.This internal taper hole 111 communicates with the liquid-through hole 121 of valve body 12 through intercommunicating pore 121, there is bigger step mating holes 122 at liquid-through hole 121 two ends, a nonreturn valve core 2 respectively is housed in the two step mating holes 122, the installation direction of two spools 2 is identical, union joint 3 is equipped with in spool 2 outsides, and the face of cylinder external diameter of the valve core case 36 on it is slightly larger than the diameter of described mating holes 122.The length on the face of cylinder 36 of valve core case 36 is slightly larger than thickness poor of the sealing flange 23 of valve body 1 step mating holes, 122 degree of depth and spool 2, thereby the back is installed has realized sealing between triple-valve body 1 and union joint 3.
Union joint 3 is by locating flange 34, necking down 32 and forming with the Outer Taper joint 31 of soft fluid-through tube close-fitting, there is liquid-through hole 33 at its center, the internal diameter in step (spool) hole 37 is identical with liquid-through hole 121 diameters of triple-valve body, and its degree of depth arrives hemisphere valve head 21 top height greater than the flange end face 25 of nonreturn valve core 2.
Fig. 2 is the connection diagram of unidirectional three-way valve 1 when extracting hydrothorax: puncture needle tubing 5, mozzle 6 are to be connected liquid inlet joint 3 ' end, and collecting bag the 7, the 8th is connected draining connector 3, and " end, the connection cone 43 of syringe 4 is inserted in the internal taper hole 111 of triple-valve body 1.
Behind puncture needle 5 insertion hydrothorax positions, outwards spur injector push-rod 42, then in the syringe 41 pistons 44 anterior negative pressure that form, also promptly in three-way valve liquid-through hole 121, form negative pressure, then make feed liquor spool 2 ' left side pressure less than right side (liquid suction pipe in) pressure, thereby make spool 2 ' joint-cutting open, hydrops through syringe needle 5, feed tube 6, feed liquor plug 3 ', spool 2 ', valve body 1 enters into injector syringe 41 front portions.The hemispherical valve head that this moment, the discharge opeing spool 2 " right atrial pressure less than left side pressure, spool 2 " is subjected to radial pressure and the joint-cutting on it is compressed, and promptly spool 2 " is closed.
When pushing back injector push-rod 42, then in the liquid-through hole 121 of triple-valve body 1, form malleation, opposite with above-mentioned situation, the pressure differential of feed liquor spool 2 ' both sides will make it close, and discharge opeing spool 2 " right atrial pressure greater than left side pressure; its hemisphere valve head joint-cutting 211 is opened, and exists the hydrothorax in the syringe 4 to enter into catcher 8 through discharge opeing spool 2 ", draining connector 3 ", discharging tube 7.Draw, push away injector push-rod 42 repeatedly, feed liquor spool 2 ' and discharge opeing spool 2 " the automatic repeatedly open and close of meeting, thus make hydrothorax constantly take out, be discharged in the catcher 8 through syringe 4.
Because spool 2 and valve body 1,3 of joints have been realized sealing fully, and the dome-type valve core head when being subjected to malleation joint-cutting close tightly, thereby in pump drainage liquid, can not occur instead flowing and leakage phenomenon.
From as can be seen above-mentioned: all need from one taking out, being discharged to another, all can adopt the above-mentioned connection of this unidirectional three-way valve with liquid or gas.Certainly will manage 6,7 exchanges and patch, then can realize multiple medicine preparation.
The significant advantage of this patent unidirectional three-way valve is:
1. unidirectional flow control function is good, can change with pressure to open or close respective channel automatically, greatly facilitates operation.
2. bionical nonreturn valve core is simple for structure, easily manufactured, and open and close is functional, no reverse leakage.
3. the valve body joint can be joined standard syringe, and is easy to use, cost is low.
4. valve body structure is simple, production cost is low.
Unidirectional three-way valve structure shown in Figure 1 only is a kind of possibility scheme of this patent, and other arrangement forms of relevant three-way valve termination are all in this patent protection domain.
This unidirectional three-way valve will have good application prospects at medical field, and can be widely used in other field.
Claims (4)
1. unidirectional three-way valve, form by triple-valve body, nonreturn valve core and union joint, it is the internal taper hole that can cooperate with the syringe modular connection that triple-valve body has an end, it is characterized in that: in all the other holes, two go sides of triple-valve body, be equipped with and have the nonreturn valve core that unidirectional control flows to function, the equidirectional installation of two nonreturn valve cores; There is the step mating holes at place, triple-valve body two go sides, and an end of described union joint can closely be installed in the step mating holes.
2. unidirectional three-way valve according to claim 1 is characterized in that: described nonreturn valve core is made up of cylinder valve body, hemispherical valve head, sealing flange etc., and nonreturn valve core is made by rubber or macromolecular material; The half ball valve head has a joint-cutting at least, at the check valve center one blind hole is arranged, and the blind hole bottom is hemispherical and communicates with joint-cutting.
3. unidirectional three-way valve according to claim 2, it is characterized in that: the hemispherical valve head diameter of described nonreturn valve core is less than the cylinder valve diameter, its sealing flange diameter is greater than valve diameter, cylinder valve body slightly larger in diameter in or equal triple-valve body the spool bore diameter be installed.
4. unidirectional three-way valve according to claim 1 is characterized in that: there is stepped hole at the big end of described union joint center, and it is identical with the aperture that triple-valve body is installed nonreturn valve core; Big end step hole depth is greater than the cylinder valve body and the half ball valve head height degree of nonreturn valve core; Its big end external diameter is slightly larger than the internal diameter of the triple-valve body stepped hole that cooperates with it, and its other end can closely be connected with infusion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420006982 CN2691631Y (en) | 2004-03-15 | 2004-03-15 | Unidirectional three way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420006982 CN2691631Y (en) | 2004-03-15 | 2004-03-15 | Unidirectional three way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2691631Y true CN2691631Y (en) | 2005-04-13 |
Family
ID=34767803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420006982 Expired - Fee Related CN2691631Y (en) | 2004-03-15 | 2004-03-15 | Unidirectional three way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2691631Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102178987A (en) * | 2011-05-25 | 2011-09-14 | 杨桑 | Continuous negative pressure rinser |
| CN104214365A (en) * | 2014-08-04 | 2014-12-17 | 中国科学院植物研究所 | Non-return three-way valve |
| WO2016081323A1 (en) * | 2014-11-21 | 2016-05-26 | Otimo Medical, Llc | Devices and methods for drainage, infusion, or instillation of fluids |
| TWI583373B (en) * | 2011-08-31 | 2017-05-21 | Ｅｎ大塚製藥股份有限公司 | Three-way direction cock unit, check valve and fluid delivery device |
| CN112451759A (en) * | 2020-11-24 | 2021-03-09 | 四川大学华西医院 | PICC pipe booster unit |
-
2004
- 2004-03-15 CN CN 200420006982 patent/CN2691631Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102178987A (en) * | 2011-05-25 | 2011-09-14 | 杨桑 | Continuous negative pressure rinser |
| TWI583373B (en) * | 2011-08-31 | 2017-05-21 | Ｅｎ大塚製藥股份有限公司 | Three-way direction cock unit, check valve and fluid delivery device |
| CN104214365A (en) * | 2014-08-04 | 2014-12-17 | 中国科学院植物研究所 | Non-return three-way valve |
| WO2016081323A1 (en) * | 2014-11-21 | 2016-05-26 | Otimo Medical, Llc | Devices and methods for drainage, infusion, or instillation of fluids |
| CN112451759A (en) * | 2020-11-24 | 2021-03-09 | 四川大学华西医院 | PICC pipe booster unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |