CN102872487B - Check valve for dialysis and one-way control device for dialysis - Google Patents
Check valve for dialysis and one-way control device for dialysis Download PDFInfo
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- CN102872487B CN102872487B CN201210403478.XA CN201210403478A CN102872487B CN 102872487 B CN102872487 B CN 102872487B CN 201210403478 A CN201210403478 A CN 201210403478A CN 102872487 B CN102872487 B CN 102872487B
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- 238000000502 dialysis Methods 0.000 title claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 210000000988 bone and bone Anatomy 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 13
- 239000012530 fluid Substances 0.000 description 9
- 239000000385 dialysis solution Substances 0.000 description 7
- 238000001631 haemodialysis Methods 0.000 description 7
- 230000000322 hemodialysis Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003053 toxin Substances 0.000 description 2
- 231100000765 toxin Toxicity 0.000 description 2
- 208000030090 Acute Disease Diseases 0.000 description 1
- 208000001647 Renal Insufficiency Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 208000022831 chronic renal failure syndrome Diseases 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 201000006370 kidney failure Diseases 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 230000007721 medicinal effect Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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Abstract
The invention provides a check valve for dialysis and a one-way control device for dialysis. The check valve for dialysis is provided with a first connector, a second connector and a valve body, wherein a valve cavity is formed by the assembled parts of the first connector and the second connector, and the valve body is arranged in the valve cavity; the valve body comprises a valve sleeve and an elastic valve plug, and a buckle is arranged on the elastic valve plug; the elastic valve plug is arranged in the valve sleeve, and the buckle is arranged at one end of the valve sleeve, so that the elastic valve plug can elastically stretch to separate from or attach to the valve sleeve; the valve sleeve is of an umbrella-shaped structure, and comprises a tubular part, an umbrella rib part and an annular board; and the elastic valve plug is provided with a column part, a conical part and a snap ring. The one-way control device for dialysis comprises the check valve for dialysis, a connecting tube and a back pressure valve, wherein one end of the connecting tube is connected with the second connector, and the other end of the connecting tube is connected with the back pressure valve. According to the check valve for dialysis and the one-way control device for dialysis, one-way flowing of liquid can be accurately controlled, and the liquid is prevented from back flowing.
Description
Technical field
The present invention relates to technical field of medical equipment, particularly relate to a kind of dialysis check valve and dialysis unidirectional control device.
Background technology
Hemodialysis is one of most effective means of the various acute and chronic renal failure disease for the treatment of, by carrying out hemodialysis, and can life-span of proper extension patient.Hemodialysis technology is relative maturity, and the quality improving hemodialysis further becomes one of developing direction of patients with renal failure treatment.
Carrying out hemodialysis adopts dialysis machine, dialyser and corresponding connecting line to carry out usually, endovascular liquid and dialysis solution is needed to be pumped to dialyser, in dialyser, the flow direction of dialysis solution is contrary with direction of flow of blood, blood and dialysis solution are under the pressure effect of osmotic pressure and dialysis solution, toxin in blood and moisture exchange, dialysis solution containing toxin is got rid of from dialysis solution drain pipe, and the blood of dialysing is delivered to human vas again.
In dialysis procedure, liquid comprises the effectively accurately flowing of blood and dialysis solution, just can guarantee the medical effect even life of patient.Because the flow direction of liquid is very crucial, therefore, existing dialyser adopts various check valve to control the one-way flow of liquid usually.
Usual two joints be communicated with of check valve of the prior art, the opposite end of two joints forms valve pocket, in valve pocket, arrange diaphragm, when fluid pressure reaches certain value, diaphragm moves, make liquid one-way flowing, and diaphragm is closed when fluid pressure is not enough, thus realize the unidirectional control of liquid.
Due to dialyser ballast pump operationally, the exit of ballast pump can produce very large pressure change, and the diaphragm of check valve easily produces certain deformation under pressure, cannot effective sealing be accomplished, therefore unavoidably there will be the phenomenon of liquid refluence when ballast pump works.Because the requirement of hemodialysis is very strict, therefore, check valve of the prior art can not meet the demands.
Therefore, not enough for prior art, provide a kind of can the dialysis check valve of liquid with precise control one-way flow and dialysis unidirectional control device very necessary to overcome prior art deficiency.
Summary of the invention
The object of the invention is to avoid the deficiencies in the prior art part and a kind of dialysis check valve and dialysis unidirectional control device are provided, this dialysis check valve and dialysis unidirectional control device effectively can control liquid one-way flowing, avoid the generation of refluence phenomenon.
Object of the present invention is realized by following technical measures.
A kind of dialysis check valve, be provided with the first joint, the second joint and valve body, the part that described first joint and described second joint assemble forms valve pocket, and described valve body is assemblied in described valve pocket;
Described valve body comprises valve pocket and Elastic valve core, described valve pocket is fixed by the internal face of described second joint and one end of described first joint, described Elastic valve core is provided with fastener, described Elastic valve core be assemblied in described valve pocket and one end that described fastener is assemblied in described valve pocket make described Elastic valve core can elastic telescopic to be separated with described valve pocket or to fit.
Above-mentioned valve pocket is set to beveled structure, and described valve pocket comprises tube, umbrella flank and annular plate surface;
Described umbrella flank is made up of plural rib, there is space between adjacent two ribs, and described rib is umbrella arrangement, and one end of every root bone is fixedly connected with described annular plate surface, and the other end of every root bone is fixedly connected with described tube;
The internal face of described annular plate surface and described second joint is sealed and matched, and one end of described first joint is connected to described annular plate surface, and described annular plate surface is fixed by the internal face of described second joint and one end of described first joint;
Described Elastic valve core is also provided with columnar part, taper portion and snap ring, and described columnar part one end is fixedly connected with the small end in described taper portion, and the described columnar part other end is fixedly connected with described fastener, and the large end in described taper portion is fixedly connected with described snap ring;
Described columnar part is assemblied in described tube and described fastener snapping is assemblied in described tube one end, and described taper portion is assemblied in described umbrella flank, and described snap ring is assemblied in described annular plate surface.
onstate the second joint and be provided with assembling end, the connecting section forming described valve pocket and liquid outlet for assembling with described first joint, the two ends of described connecting section to be held and described liquid outlet is connected with described assembling respectively, described connecting section from described assembling end to described liquid outlet in contraction structure gradually, the internal diameter of described liquid outlet is less than the external diameter of described annular plate surface.
onstate annular plate surface and be provided with the groove matched with described snap ring, described snap ring is assemblied in described groove.
onstate tube, described umbrella flank and described annular plate surface and be set to integrated formed structure, described fastener, described columnar part, described taper portion and described snap ring are set to integrated formed structure, and described assembling end, described connecting section and described liquid outlet are set to integrated formed structure.
onstate fastener and be set to cone structure, the diameter of described fastener is greater than the external diameter of described columnar part.
onthe diameter stating fastener is greater than the external diameter 2-10mm of described columnar part.
onthe diameter stating fastener is greater than the external diameter 3-6mm of described columnar part.
onthe dialysis check valve stated, is also provided with locking nut, and the outside wall surface of described first joint is provided with screw thread, and described locking nut is sheathed on described second joint and assembles with described first joint screw thread.
A kind of dialysis unidirectional control device, have the dialysis check valve described in above-mentioned any one, be also provided with connection tube and counterbalance valve, one end of described connection tube is connected with described second joint, and the other end of described connection tube is connected with described counterbalance valve.
A kind of dialysis check valve of the present invention, be provided with the first joint, the second joint and valve body, the part that described first joint and described second joint assemble forms valve pocket, and described valve body is assemblied in described valve pocket; Described valve body comprises valve pocket and Elastic valve core, described valve pocket is fixed by the internal face of described second joint and one end of described first joint, described Elastic valve core is provided with fastener, described Elastic valve core be assemblied in described valve pocket and one end that described fastener is assemblied in described valve pocket make described Elastic valve core can elastic telescopic to be separated with described valve pocket or to fit.This dialysis check valve is provided with fastener due to Elastic valve core, can guarantee that spool is separated with valve pocket or fits under stress.When occurring that fluid pressure changes greatly in dialysis procedure, the button effect of drawing of fastener can prevent Elastic valve core to be out of shape, and prevents liquid refluence phenomenon from occurring, thus liquid with precise control one-way flow.
A kind of dialysis unidirectional control device of the present invention, there is the dialysis check valve described in above-mentioned any one, also be provided with connection tube and counterbalance valve, one end of described connection tube is connected with described second joint, and the other end of described connection tube is connected with described counterbalance valve.The check valve that this dialysis unidirectional control device is arranged can control liquid one-way flowing, prevents from flowing backwards.By setting up counterbalance valve, making just can carry out one-way flow when only having the pressure of liquid to be bigger than certain value, controlling liquid one-way flowing effect better.
Accompanying drawing explanation
The present invention is further illustrated to utilize accompanying drawing, but the content in accompanying drawing does not form any limitation of the invention.
Fig. 1 is that a kind of dialysis of the present invention uses the structural representation of check valve;
Fig. 2 is the decomposing schematic representation of Fig. 1;
Fig. 3 is " A-A " sectional view removing nut portion of Fig. 1;
Fig. 4 is that a kind of dialysis of the present invention uses the structural representation of unidirectional control device.
In Fig. 1 to Fig. 4, comprising:
First joint 100,
Screw thread 110,
Second joint 200,
Assembling end 210,
Connecting section 220,
Liquid outlet 230,
Valve body 300,
Valve pocket 310,
Tube 311,
Umbrella flank 312,
Annular plate surface 313,
Elastic valve core 320,
Fastener 321,
Columnar part 322,
Taper portion 323,
Snap ring 324,
Locking nut 400,
Connection tube 500,
Counterbalance valve 600.
Detailed description of the invention
The invention will be further described with the following Examples.
embodiment 1.
A kind of dialysis check valve, as shown in Figure 1 to Figure 3, be provided with the part that the first joint 100, second joint 200 and valve body 300, first joint 100 and the second joint 200 assemble and form valve pocket, valve body 300 is assemblied in valve pocket.
Valve body 300 comprises valve pocket 310 and Elastic valve core 320, valve pocket 310 is fixed by the internal face of the second joint 200 and one end of the first joint 100, Elastic valve core 320 is provided with fastener 321, Elastic valve core 320 be assemblied in valve pocket 310 and one end that fastener 321 is assemblied in valve pocket 310 make Elastic valve core 320 can elastic telescopic to be separated with valve pocket 310 or to fit.
This dialysis with check valve usually and ballast pump assemble and use, balance delivery side of pump is connected liquid to be pumped into the first joint 100 with the first joint 100, the pressure effect of liquid makes Elastic valve core 320 be separated with valve pocket 310, and liquid is entered the second joint 200 by Elastic valve core 320 gap and discharged by the second joint 200.When fluid pressure is not enough, Elastic valve core 320 returns and valve pocket 310 fitting tight under the elastic pulling force effect of fastener 321, and liquid then can not enter the second joint 200.
The Elastic valve core 320 of this dialysis check valve is by arranging fastener 321, and fastener 321 and valve pocket 310 assemble, and when fluid pressure reaches certain threshold values, fluid pressure will be washed Elastic valve core 320 open and Elastic valve core 320 is separated with valve pocket 310.Because stretching of fastener 321 draws effect, the pressure produced during ballast pump action can not reach the opening pressure of this dialysis check valve, thus better can control liquid one-way flowing and prevent refluence phenomenon from occurring.
In addition, because fastener 321 one end with valve pocket 310 is assembled, the pulling force effect of fastener 321 excessively can not depart from making Elastic valve core 320 with being separated between valve pocket 310, and Elastic valve core 320 can be prevented to a certain extent to be out of shape.
In addition, due to the existence of fastener 321, the distance that Elastic valve core 320 leaves valve pocket 310 can not unrestrictedly be left, and is convenient to liquid with precise control flow.
Concrete, valve pocket 310 is set to beveled structure, and valve pocket 310 comprises tube 311, umbrella flank 312 and annular plate surface 313.
Umbrella flank 312 is made up of plural rib, there is space between adjacent two ribs, and rib is umbrella arrangement, and one end of every root bone is fixedly connected with annular plate surface 313, and the other end of every root bone is then fixedly connected with tube 311.
The internal face of annular plate surface 313 and the second joint 200 is sealed and matched, and one end of the first joint 100 is connected to annular plate surface 313, and annular plate surface 313 is fixed by the internal face of the second joint 200 and one end of the first joint 100.
Elastic valve core 320 is also provided with columnar part 322, taper portion 323 and snap ring 324, and columnar part 322 one end is fixedly connected with the small end in taper portion 323, and columnar part 322 other end is fixedly connected with fastener 321, and the large end in taper portion 323 is fixedly connected with snap ring 324.
Columnar part 322 is assemblied in tube 311 and fastener 321 snapping is assemblied in tube 311 one end, and taper portion 323 is assemblied in umbrella flank 312, and snap ring 324 is assemblied in annular plate surface 313.
Fastener 321 snapping is assemblied in tube 311 one end, and columnar part 322 is assemblied in tube 311, and taper portion 323 is assemblied in umbrella flank 312, and annular panel and snap ring 324 assemble.When the fluid pressure that the first joint 100 inputs reaches certain value, liquid exports the second joint 200 by by the space between umbrella flank 312 to by the gap between annular panel and Elastic valve core 320.
Fastener 321 is set to cone structure, the diameter of fastener 321 is greater than the external diameter of columnar part 322, such fastener 321 can accurate assembly outside columnar part 322, guarantee that fastener 321 can not be sucked into columnar part 322 inside under fluid pressure, realize good one-way flow and control and accurate fluid flow control.
Usually, external diameter 2-10mm that the diameter of fastener 321 is greater than columnar part 322 can satisfy the demands, and the actual size of fastener 321 and columnar part 322 can determine according to specific needs flexibly.
Second joint 200 is provided with assembling end 210, the connecting section 220 forming valve pocket and liquid outlet 230 for assembling with the first joint 100, the two ends of connecting section 220 are connected with assembling end 210 and liquid outlet 230 respectively, connecting section 220 self-assembly end 210 to liquid outlet 230 is in contraction structure gradually, and the internal diameter of liquid outlet 230 is less than the external diameter of annular plate surface 313.
Annular plate surface 313 is provided with the groove matched with snap ring 324, and snap ring 324 is assemblied in groove.
Preferably, tube 311, umbrella flank 312 and annular plate surface 313 are set to integrated formed structure, have the advantages that structure is simple, easy to assembly.
Preferably, fastener 321, columnar part 322, taper portion 323 and snap ring 324 are set to integrated formed structure, and assembling end 210, connecting section 220 and liquid outlet 230 are set to integrated formed structure, have the advantages that structure is simple, easy to assembly.
In order to realize better locating effect, this dialysis check valve is also provided with locking nut 400, and the outside wall surface of the first joint 100 is provided with screw thread 110, and locking nut 400 is sheathed on the second joint 200 and assembles with the first joint 100 screw thread 110.By locking nut 400, the first joint 100, second joint 200 is firmly assemblied in one.
It should be noted that, in order to realize good location effect, being not limited only to be undertaken by locking nut 400, also can by a snap-fit manner etc. realizing assembling between other locking device and the first joint 100.
In sum, this dialysis check valve can control liquid one-way flowing, prevents from flowing backwards, and has the advantages that structure is simple, with low cost, easy to use.
embodiment 2.
A kind of dialysis check valve, other structure is identical with embodiment 1, and difference is: the diameter of fastener 321 is greater than the external diameter 3-6mm of columnar part 322, can not only realize locating effect and simple in structure and low in cost.
embodiment 3.
A kind of dialysis unidirectional control device, as shown in Figure 4, there is the dialysis check valve described in embodiment 1 or 2 any one, be also provided with connection tube 500 and counterbalance valve 600, one end of connection tube 500 is connected with the second joint 200, and the other end of connection tube 500 is connected with counterbalance valve 600.The structure of counterbalance valve 600 is general knowledge known in this field, does not repeat them here.
This dialysis unidirectional control device, except valve pocket 310 and Elastic valve core 320, is also provided with counterbalance valve 600.The setting of counterbalance valve 600 improves the opening pressure threshold value of this dialysis unidirectional control device, and when namely only having the pressure when liquid to be greater than the opening pressure of counterbalance valve 600, liquid just can carry out one-way flow.
By increasing counterbalance valve 600, for this dialysis unidirectional control device provides a stable pressure-regulating device, circulation and the cut-off of liquid can be controlled more efficiently and effectively.Could conducting when only having the pressure being supplied to this dialysis unidirectional control device when ballast pump to be greater than the conducting pressure of counterbalance valve 600, liquid just can flow out from the exit of counterbalance valve 600, once the pressure that dialysis machine provides is less than the conducting pressure of counterbalance valve 600, umbrella valve is closed at once, and liquid stops flowing.
In dialyser technical field, usually by designing, check valve being arranged at corresponding liquid one-way flowing pipeline, thinking in theory and can realize one-way flow there will not be refluence phenomenon by arranging check valve liquid.But practice finds, select the check valve that two kinds of unlike materials are made, exported that i.e. the second joint 200 is directly also vertical with a tubes connection to be placed, first joint 100 down, in conduit, water column is housed, in theory due to the effect of counterbalance valve 600 one-way flow, the water column in conduit should not flow backwards from the first joint 100 and flow out.But practical situation is: a kind of check valve of material is until just can accomplish good sealing effectiveness when water column is greater than 40 centimetres, be less than 40 centimetres this section interval check valve at water column and there will be the more serious phenomenon of leakage, and the check valve of another kind of material is until just can accomplish good sealing effectiveness when water column is greater than 20 centimetres.
If water-column is considerably beyond 40 centimetres, then the check valve that two kinds of materials are made does not flow backwards seepage all completely.
Therefore a kind of dialysis unidirectional control device is provided, dialysis check valve basis increases a counterbalance valve 600, when counterbalance valve 600 is adjusted to certain pressure, dialysis check valve can be realized good sealing effectiveness.By increasing the impact that the counterbalance valve check valve that not only can get rid of unlike material causes whole system flow, and can the one-way flow of liquid with precise control more.
The dialysis unidirectional control device two kinds of materials be prepared from is installed on the compound ballast pump of haemodialysis control unit, when flow system flow is at 30 L/h, when the counterbalance valve 600 at ballast pump outlet two ends is adjusted to 80KPa, through repeatedly experiment record one hour after flow through ballast pump two ends total amount of liquid difference is no more than 20ml, error rate is no more than 0.067%, error rate after visible increase counterbalance valve 600 is in the allowed band of machine, achieve and flow is controlled accurately, realize good therapeutic effect.
This dialysis unidirectional control device can realize good control effects to the flow equilibrium of whole system.Counterbalance valve 600 regulates the size of pressure and the flow of system, and the pressure size of the caliber of conduit and the porch of ballast pump is relevant.User can regulate the pressure of counterbalance valve 600 according to above condition thus also can reach reasonable control effects while this device can be made to be applicable to various different environment.This dialysis unidirectional control device adds counterbalance valve, provides stable pressure-regulating device by counterbalance valve, can the circulation of effective and rapid control liquid and cut-off.Just conducting when only having the pressure being supplied to this device when body to be greater than the conducting pressure of counterbalance valve, liquid flows out from counterbalance valve exit, once the pressure that the pump housing provides is less than the conducting pressure of counterbalance valve, dialysis check valve is closed at once, and liquid stops flowing.
In sum, this dialysis unidirectional control device can control liquid one-way flowing, prevents from flowing backwards, and has the advantages that structure is simple, with low cost, easy to use.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (9)
1. a dialysis check valve, is characterized in that: be provided with the first joint, the second joint and valve body, and the part that described first joint and described second joint assemble forms valve pocket, and described valve body is assemblied in described valve pocket;
Described valve body comprises valve pocket and Elastic valve core, described valve pocket is fixed by the internal face of described second joint and one end of described first joint, described Elastic valve core is provided with fastener, described Elastic valve core be assemblied in described valve pocket and one end that described fastener is assemblied in described valve pocket make described Elastic valve core can elastic telescopic to be separated with described valve pocket or to fit;
Described valve pocket is set to beveled structure, and described valve pocket comprises tube, umbrella flank and annular plate surface;
Described umbrella flank is made up of plural rib, there is space between adjacent two ribs, and described rib is umbrella arrangement, and one end of every root bone is fixedly connected with described annular plate surface, and the other end of every root bone is fixedly connected with described tube;
The internal face of described annular plate surface and described second joint is sealed and matched, and one end of described first joint is connected to described annular plate surface, and described annular plate surface is fixed by the internal face of described second joint and one end of described first joint;
Described Elastic valve core is also provided with columnar part, taper portion and snap ring, and described columnar part one end is fixedly connected with the small end in described taper portion, and the described columnar part other end is fixedly connected with described fastener, and the large end in described taper portion is fixedly connected with described snap ring;
Described columnar part is assemblied in described tube and described fastener snapping is assemblied in described tube one end, and described taper portion is assemblied in described umbrella flank, and described snap ring is assemblied in described annular plate surface.
2. dialysis check valve according to claim 1, it is characterized in that: described second joint is provided with assembling end, the connecting section forming described valve pocket and liquid outlet for assembling with described first joint, the two ends of described connecting section to be held and described liquid outlet is connected with described assembling respectively, described connecting section from described assembling end to described liquid outlet in contraction structure gradually, the internal diameter of described liquid outlet is less than the external diameter of described annular plate surface.
3. dialysis check valve according to claim 2, is characterized in that: described annular plate surface is provided with the groove matched with described snap ring, and described snap ring is assemblied in described groove.
4. dialysis check valve according to claim 3, it is characterized in that: described tube, described umbrella flank and described annular plate surface are set to integrated formed structure, described fastener, described columnar part, described taper portion and described snap ring are set to integrated formed structure, and described assembling end, described connecting section and described liquid outlet are set to integrated formed structure.
5. dialysis check valve according to claim 4, is characterized in that: described fastener is set to cone structure, the diameter of described fastener is greater than the external diameter of described columnar part.
6. dialysis check valve according to claim 5, is characterized in that: the diameter of described fastener is greater than the external diameter 2-10mm of described columnar part.
7. dialysis check valve according to claim 6, is characterized in that: the diameter of described fastener is greater than the external diameter 3-6mm of described columnar part.
8. dialysis check valve according to claim 7, is characterized in that: be also provided with locking nut, and the outside wall surface of described first joint is provided with screw thread, and described locking nut is sheathed on described second joint and assembles with described first joint screw thread.
9. a dialysis unidirectional control device, it is characterized in that: there is the dialysis check valve described in claim 1 to 8 any one, also be provided with connection tube and counterbalance valve, one end of described connection tube is connected with described second joint, and the other end of described connection tube is connected with described counterbalance valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403478.XA CN102872487B (en) | 2012-10-22 | 2012-10-22 | Check valve for dialysis and one-way control device for dialysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403478.XA CN102872487B (en) | 2012-10-22 | 2012-10-22 | Check valve for dialysis and one-way control device for dialysis |
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| CN102872487A CN102872487A (en) | 2013-01-16 |
| CN102872487B true CN102872487B (en) | 2015-01-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105571893B (en) * | 2014-10-17 | 2018-08-14 | 茂名华粤机电设备有限公司 | A kind of enclosed sampling device with quick coupling |
| KR101618028B1 (en) * | 2015-11-30 | 2016-05-18 | 최영철 | Assembled filter for syringe, syringe and assembled ringer comprising thereof |
| CN105363086B (en) * | 2015-12-04 | 2023-08-08 | 中山本善医疗科技有限公司 | Peritoneal dialysis device |
| JP7260529B2 (en) | 2017-09-11 | 2023-04-18 | ケアフュージョン ３０３、インコーポレイテッド | Umbrella check valve |
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|---|---|---|---|---|
| US4340080A (en) * | 1977-03-11 | 1982-07-20 | Compagnie Generale Des Etablissements Michelin | Inflation valve |
| US5172720A (en) * | 1992-02-03 | 1992-12-22 | Eaton Corporation | Single seal fluid control valve |
| CN101279704A (en) * | 2008-05-27 | 2008-10-08 | 广州达意隆包装机械股份有限公司 | Fluid filling valve and liquid filling method |
| CN201731121U (en) * | 2010-07-16 | 2011-02-02 | 福建融音塑业科技有限公司 | Pumping non-return valve |
| CN202909174U (en) * | 2012-10-22 | 2013-05-01 | 贝恩医疗设备(广州)有限公司 | One-way valve for dialysis and one-way control device for dialysis |
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2012
- 2012-10-22 CN CN201210403478.XA patent/CN102872487B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340080A (en) * | 1977-03-11 | 1982-07-20 | Compagnie Generale Des Etablissements Michelin | Inflation valve |
| US5172720A (en) * | 1992-02-03 | 1992-12-22 | Eaton Corporation | Single seal fluid control valve |
| CN101279704A (en) * | 2008-05-27 | 2008-10-08 | 广州达意隆包装机械股份有限公司 | Fluid filling valve and liquid filling method |
| CN201731121U (en) * | 2010-07-16 | 2011-02-02 | 福建融音塑业科技有限公司 | Pumping non-return valve |
| CN202909174U (en) * | 2012-10-22 | 2013-05-01 | 贝恩医疗设备(广州)有限公司 | One-way valve for dialysis and one-way control device for dialysis |
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| CN102872487A (en) | 2013-01-16 |
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