CN102125706B - Self reset pressure relief valve for hemodialysis - Google Patents
Self reset pressure relief valve for hemodialysis Download PDFInfo
- Publication number
- CN102125706B CN102125706B CN 201110029097 CN201110029097A CN102125706B CN 102125706 B CN102125706 B CN 102125706B CN 201110029097 CN201110029097 CN 201110029097 CN 201110029097 A CN201110029097 A CN 201110029097A CN 102125706 B CN102125706 B CN 102125706B
- Authority
- CN
- China
- Prior art keywords
- valve body
- chamber
- pivot pin
- spring
- centre bore
- 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.)
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Links
- 238000001631 haemodialysis Methods 0.000 title claims abstract description 15
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 28
- 238000011109 contamination Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 210000001331 nose Anatomy 0.000 description 8
- 210000001124 body fluid Anatomy 0.000 description 5
- 239000010839 body fluid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 241000009298 Trigla lyra Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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)
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a self reset pressure relief valve for hemodialysis. An upper chamber and a lower chamber of the lower valve are communicated by a small hole in which a fixing cup is installed, the lower end of the fixing cup is embedded into an inner cavity of a fixing base; a shaft pin is penetrated through a center hole of the fixing cup, the shaft head of the shaft pin can block off the center hole of the fixing cup, a second spring is sleeved on the shaft pin, the upper end of the shaft pin is abutted against the lower end of a fixing block, the upper end of the fixing block is abutted against the lower end of a first spring; and a ring groove is arranged in the middle of the fixing block, and a diaphragm is installed in the ring groove. The self reset pressure relief valve for hemodialysis has good biological performance and can not rust, thus effectively avoiding medical fluid contamination; and the springs are used to substitute a rubber diaphragm for reset and sealing, high reliability of pressure relief can also be ensured after long-time use, and the defect of noise generated due to resonance of a traditional structure is eliminated.
Description
Technical field
The invention belongs to the hemodialysis technology field, specifically, particularly hemodialysis is with the air relief valve that resets certainly.
Background technology
Air relief valve is the vitals on the haemodialysis control unit, plays a part to regulate and control piper pressure.At present, the air relief valve that uses on the haemodialysis control unit generally is made up of valve body and core assembly, and existing deficiency is:
1) adopt metal to make valve body usually, valve body is prone to get rusty, and perhaps pollutes medical fluid because of the precipitating metal ion.
2) mode that adopts rubber diaphragm to reset and seal usually, rubber diaphragm is prone to aging, can reduce the reliability of air relief valve after rubber diaphragm is nonelastic.
3) poor sealing appears in the poor reliability of valve body import department sealing ring easily, and it is bad to occur effect of easing stress once in a while, or the bigger situation of noise occurs because of producing resonance with feed liquor.
Summary of the invention
The hemodialysis that technical problem to be solved by this invention is a kind of good reliability is provided is with the air relief valve that resets certainly.
Technical scheme of the present invention is following: a kind of hemodialysis is with the air relief valve that resets certainly; The fixing valve body (2) down in the lower end of upper valve body (1); The top of upper valve body (1) is equipped with adjustment screw (3) from top to bottom, and the inner chamber of upper valve body (1) is stretched in the lower end of this adjustment screw (3), and is pressed on the end face of pressure pad (4); The upper end of the lower end of pressure pad (4) and first spring (5) is fixed; Be provided with liquid inlet joint (6) and fluid joint (7) on the valve body (2) down said, have upper chamber (2a) and lower chamber (2b) in the following valve body (2), wherein upper chamber (2a) is communicated with the endoporus of fluid joint (7); Lower chamber (2b) is communicated with the endoporus of liquid inlet joint (6); And communicate through aperture between the upper and lower part chamber (2a, 2b), its key is: fixed cup (8) is installed in said aperture, and the lower end of this fixed cup (8) embeds in the inner chamber of holder (9); Holder (9) is positioned at lower chamber (2b), and the inner chamber of holder (9) is communicated with the endoporus of liquid inlet joint (6); In the centre bore of said fixed cup (8), be equipped with pivot pin (10); The centre bore matched in clearance of this pivot pin (10) and fixed cup (8); The spindle nose of pivot pin (10) is arranged in the inner chamber of holder (9); And can be with the centre bore shutoff of fixed cup (8); On said pivot pin (10), be set with second spring (11), the step surface butt in the lower end of this second spring (11) and fixed cup (8) centre bore, the snap ring (12) that the upper end of second spring (11) and pivot pin (10) top are provided with connects; The lower end butt of the upper end of said pivot pin (10) and fixed block (13), the lower end butt of the upper end of fixed block (13) and first spring (5); Middle part at said fixed block (13) is provided with annular groove, and diaphragm (14) is installed in this annular groove, and the edge of said diaphragm (14) is compressed by upper and lower valve body (1,2).
Adopt above technical scheme; Liquid gets into the lower chamber of valve body down through liquid inlet joint; Because first spring can produce a downward pressure to pivot pin through fixed block; The elastic force that this pressure surpasses second spring lets pivot pin move down with fluid pressure with joint efforts; And the spindle nose that makes pivot pin opens the centre bore of fixed cup, so the liquid that liquid inlet joint gets into can get into the upper chamber of valve body down through the centre bore of fixed cup, can produce certain upward pressure (suppose this fluid joint of valve body stop up fully) at present to diaphragm owing to get into the liquid of upper chamber; Fluid pressure that should be upwards and the elastic force of second spring is formed can overcome the downward pressure of first spring with joint efforts gradually and pivot pin is moved up; With the complete shutoff of the centre bore of fixed cup, the upper chamber of following valve body and lower chamber are isolated (when following valve body fluid joint stopped up, upper chamber was the maximum pressure in air relief valve exit to the pressure of fluid joint) up to the spindle nose of pivot pin; When if open in the fluid joint exit of following valve body; Because the pressure in the valve body upper chamber descends down; The equilibrium point of first spring force and second spring, fluid pressure is destroyed; So first spring can make pivot pin move down, make the flow direction fluid joint at liquid inlet joint place, pressure in valve body fluid joint exit can be less than the pressure of outlet when stopping up fully at present for this.
The maximum pressure (maximum pressure when promptly descending the outlet of valve body fluid joint to stop up) that gets into the liquid generation of valve body upper chamber down can only be less than or equal to the pressure of valve body liquid inlet joint down; And when the outlet of fluid joint was not stopped up, the pressure in exit more can be less than the pressure at liquid inlet joint place; When the adjustment screw was adjusted downwards, this maximum pressure can increase, and when the adjustment screw adjusted upward, this maximum pressure can reduce.
Have this visible, the present invention has realized the reduction of inlet pressure to outlet pressure, and outlet pressure can be adjusted in certain limit.When the adjustment screw makes first spring in a fixed position, owing to first spring force does not change (the minimum elastic force that second spring makes progress is relative fixed also), so even the fluid pressure of import department constantly increases, the maximum pressure in exit also can be constant.When adjustment screw when first spring is unclamped, second spring can promote pivot pin and move up automatically, guarantees that the maximum pressure of air relief valve is constant all the time, and then makes the air relief valve all the time can reliably working.
In order to strengthen sealing, prevent to leak between fixed cup and the following valve body, between said fixed cup (8) and following valve body (2), first sealing ring (15) is installed.
Between said fixed cup (8) and holder (9), second sealing ring (16) is installed; The centre bore of this second sealing ring (16) is over against the centre bore of fixed cup (8), and the spindle nose of said pivot pin (10) cooperates with the centre bore of second sealing ring (16) through the conical surface.Above structure has strengthened the sealing between fixed cup and the holder on the one hand, and on the other hand, opening with shutoff of pivot pin control fixed cup centre bore is sensitiveer, reliable, and the sealing effectiveness can guarantee shutoff through cone match the time.
In order to strengthen sealing, prevent to leak between holder and the following valve body, between said holder (9) and following valve body (2), the 3rd sealing ring (17) is installed, the 3rd sealing ring (17) is lower than the endoporus of liquid inlet joint (6).
For simplified structure, convenient for assembly; Be fixed with shrouding (18) in the said bottom of valve body (2) down; This shrouding (18) is with the lower port sealing of lower chamber (2b), and the lower end of said holder (9) embeds in the shrouding (18), and both are fixed together.
The invention has the beneficial effects as follows:
1) can adopt medical grade rubber and plastic production, biology performance is good, can not get rusty, and has effectively avoided the medical fluid pollution.
2) replace the rubber diaphragm sealing that resets with spring, life-time service also can guarantee the reliability height that reduces pressure.
3) good airproof performance can not leak, and has eliminated traditional structure produces noise because of resonance disadvantage.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
As shown in Figure 1, the present invention has upper valve body 1 and following valve body 2, and upper and lower valve body 1,2 is processed by medical grade rubber or plastics, and on the upper valve body 1 spiral-lock infra valve body 2, is fixed together through many screws.One side of infra valve body 2 is formed with liquid inlet joint 6, and opposite side is formed with fluid joint 7.Said have upper chamber 2a and lower chamber 2b in the valve body 2 down; Upper chamber 2a and lower chamber 2b are circle; Wherein the bottom opening of upper chamber 2a is communicated with the endoporus of fluid joint 7; The side-wall hole of lower chamber 2b is communicated with the endoporus of liquid inlet joint 6, and communicates through aperture between the upper and lower part chamber 2a, 2b.
From Fig. 1, can know, in the aperture between upper and lower part chamber 2a, 2b fixed cup 8 is installed, first sealing ring, 15, the first sealing rings 15 are housed between this fixed cup 8 and the following valve body 2 be higher than liquid inlet joint 6.The lower end of said fixed cup 8 embeds in the inner chamber of holder 9, and is spacing by the step surface in holder 9 inner chambers.Second sealing ring 16 is installed between fixed cup 8 and holder 9, and the centre bore of this second sealing ring 16 is over against the centre bore of fixed cup 8, and aperture, the lower end equal and opposite in direction of the centre bore of second sealing ring 16 and fixed cup 8 centre bores.Said holder 9 is positioned at lower chamber 2b, and the inner chamber of holder 9 is communicated with the endoporus of liquid inlet joint 6 through cross through hole.The lower end of holder 9 embeds in the shrouding 18, and both are fixed together.Shrouding 18 is through the bottom of bolt in following valve body 2, and this shrouding 18 is with the lower port sealing of lower chamber 2b.The endoporus that the 3rd sealing ring 17, the three sealing rings 17 are lower than liquid inlet joint 6 is installed between said holder 9 and following valve body 2.
From Fig. 1, also can know; In the centre bore of fixed cup 8, be equipped with pivot pin 10; The centre bore matched in clearance of this pivot pin 10 and fixed cup 8; The integrally formed spindle nose in pivot pin 10 bottoms is arranged in the inner chamber of holder 9, and the conical surface between pivot pin 10 spindle noses and the axle body can stretch in the centre bore of second sealing ring 16, with the centre bore shutoff of fixed cup 8.On said pivot pin 10, be set with second spring 11, the step surface butt in the lower end of this second spring 11 and fixed cup 8 centre bores, the snap ring 12 that the upper end of second spring 11 and pivot pin 10 tops are provided with connects, and snap ring 12 is arranged in upper chamber 2a.The lower end butt of the upper end of said pivot pin 10 and fixed block 13; Middle part at fixed block 13 is provided with annular groove; Diaphragm 14 is installed in this annular groove, and the edge of said diaphragm 14 is compressed by upper and lower valve body 1,2, and diaphragm 14 is separated the inner chamber of upper valve body 1 and the upper chamber 2a of following valve body 2.The lower end butt of the upper end of said fixed block 13 and first spring 5, the lower end of the upper end of first spring 5 and pressure pad 4 is fixed.Be equipped with adjustment screw 3 from top to bottom at the top of said upper valve body 1, this adjustment screw 3 and upper valve body 1 threaded engagement, the inner chamber of upper valve body 1 is stretched in the lower end of adjustment screw 3, and is pressed on the end face of pressure pad 4.
Operation principle of the present invention is following:
Liquid gets into the lower chamber 2b of valve body 2 down through liquid inlet joint 6; Because first spring 5 can produce a downward pressure through 13 pairs of pivot pins of fixed block 10; The elastic force that this pressure surpasses second spring 11 lets pivot pin 10 move down with fluid pressure with joint efforts; And second sealing ring 16 can not be sealed; The spindle nose of pivot pin 10 is opened the centre bore of fixed cup 8 at this moment; So the liquid that liquid inlet joint 6 gets into can get into the upper chamber 2a of valve body 2 down through the centre bore of fixed cup 8, can produce certain upward pressure (suppose this fluid joint 7 of valve body 2 stops up fully) at present to diaphragm 14 owing to get into the liquid of upper chamber 2a, the fluid pressure that should make progress and the elastic force of second spring 11 is formed can overcome the downward pressure of first spring 5 with joint efforts gradually and pivot pin 10 is moved up; The conical surface between pivot pin 10 spindle noses and axle body stretches in the centre bore of second sealing ring 16; With the complete shutoff of the centre bore of fixed cup 8, the upper chamber 2a of following valve body 2 and lower chamber 2b isolate (when following valve body fluid joint 7 stopped up, upper chamber 2a was the maximum pressure in air relief valve exit to the pressure at fluid joint 7 places); When if open in fluid joint 7 exits of following valve body 2; Because the pressure in the valve body upper chamber 2a descends down; The equilibrium point of first spring force and second spring, fluid pressure is destroyed; So first spring 5 can make pivot pin 10 move down, make the flow direction fluid joint 7 at liquid inlet joint 6 places, pressure in valve body fluid joint 7 exits can be less than the pressure of outlet when stopping up fully at present for this.
Claims (5)
1. a hemodialysis is with the air relief valve that resets certainly; The fixing valve body (2) down in the lower end of upper valve body (1); The top of upper valve body (1) is equipped with adjustment screw (3) from top to bottom, and the inner chamber of upper valve body (1) is stretched in the lower end of this adjustment screw (3), and is pressed on the end face of pressure pad (4); The upper end of the lower end of pressure pad (4) and first spring (5) is fixed; Be provided with liquid inlet joint (6) and fluid joint (7) on the valve body (2) down said, have upper chamber (2a) and lower chamber (2b) in the following valve body (2), wherein upper chamber (2a) is communicated with the endoporus of fluid joint (7); Lower chamber (2b) is communicated with the endoporus of liquid inlet joint (6); And communicate through aperture between the upper and lower part chamber (2a, 2b), it is characterized in that: fixed cup (8) is installed in said aperture, and the lower end of this fixed cup (8) embeds in the inner chamber of holder (9); Holder (9) is positioned at lower chamber (2b), and the inner chamber of holder (9) is communicated with the endoporus of liquid inlet joint (6); In the centre bore of said fixed cup (8), be equipped with pivot pin (10); The centre bore matched in clearance of this pivot pin (10) and fixed cup (8); The spindle nose of pivot pin (10) is arranged in the inner chamber of holder (9); And can be with the centre bore shutoff of fixed cup (8); On said pivot pin (10), be set with second spring (11), the step surface butt in the lower end of this second spring (11) and fixed cup (8) centre bore, the snap ring (12) that the upper end of second spring (11) and pivot pin (10) top are provided with connects; The lower end butt of the upper end of said pivot pin (10) and fixed block (13), the lower end butt of the upper end of fixed block (13) and first spring (5); Middle part at said fixed block (13) is provided with annular groove, and diaphragm (14) is installed in this annular groove, and the edge of said diaphragm (14) is compressed by upper and lower valve body (1,2).
2. hemodialysis according to claim 1 is characterized in that: between said fixed cup (8) and following valve body (2), first sealing ring (15) is installed with from resetting air relief valve.
3. hemodialysis according to claim 1 and 2 is with the air relief valve that resets certainly; It is characterized in that: between said fixed cup (8) and holder (9), second sealing ring (16) is installed; The centre bore of this second sealing ring (16) is over against the centre bore of fixed cup (8), and the spindle nose of said pivot pin (10) cooperates with the centre bore of second sealing ring (16) through the conical surface.
4. hemodialysis according to claim 1 is with the air relief valve that resets certainly, and it is characterized in that: between said holder (9) and following valve body (2), the 3rd sealing ring (17) is installed, the 3rd sealing ring (17) is lower than the endoporus of liquid inlet joint (6).
According to claim 1 or 4 described hemodialysis with from resetting air relief valve; It is characterized in that: be fixed with shrouding (18) in the said bottom of valve body (2) down; This shrouding (18) is with the lower port sealing of lower chamber (2b); The lower end of said holder (9) embeds in the shrouding (18), and both are fixed together.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110029097 CN102125706B (en) | 2011-01-27 | 2011-01-27 | Self reset pressure relief valve for hemodialysis |
| PCT/CN2011/074503 WO2012100473A1 (en) | 2011-01-27 | 2011-05-23 | Self-resetting pressure reducing valve for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110029097 CN102125706B (en) | 2011-01-27 | 2011-01-27 | Self reset pressure relief valve for hemodialysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102125706A CN102125706A (en) | 2011-07-20 |
| CN102125706B true CN102125706B (en) | 2012-10-10 |
Family
ID=44264137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110029097 Active CN102125706B (en) | 2011-01-27 | 2011-01-27 | Self reset pressure relief valve for hemodialysis |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102125706B (en) |
| WO (1) | WO2012100473A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565463A (en) * | 2015-01-05 | 2015-04-29 | 宁波耀峰液压电器有限公司 | Pressure regulating valve |
| CN104740715A (en) * | 2015-04-21 | 2015-07-01 | 上海康德莱企业发展集团医疗器械有限公司 | Disposable conveying infusion pump |
| CN112933315A (en) * | 2021-02-01 | 2021-06-11 | 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） | Pressure regulating device for hemodialysis machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201368241Y (en) * | 2009-01-09 | 2009-12-23 | 浙江沃孚阀门有限公司 | Double-spring type pressure-reducing valve |
| CN101625043A (en) * | 2009-08-13 | 2010-01-13 | 凯迈（洛阳）气源有限公司 | High-pressure reducing valve |
| CN101829398A (en) * | 2010-05-20 | 2010-09-15 | 重庆山外山科技有限公司 | Pressure-reducing valve for hemodialysis machine |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN201996893U (en) * | 2011-01-27 | 2011-10-05 | 重庆山外山科技有限公司 | Self-resetting pressure reducing valve for hemodialysis |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2240381A (en) * | 1990-01-26 | 1991-07-31 | Trevor Thomas Jenkins | Pressure relieving regulators |
| CN2753931Y (en) * | 2004-10-14 | 2006-01-25 | 中国石油天然气集团公司 | Thin-film pressure-reducing valve |
| JP4922775B2 (en) * | 2007-01-29 | 2012-04-25 | 株式会社フジキン | Fluid controller |
| JP5154979B2 (en) * | 2008-03-05 | 2013-02-27 | 京浜ハイフロー販売株式会社 | Medical sampling valve |
| US8485213B2 (en) * | 2008-12-17 | 2013-07-16 | Emerson Process Management Regulator Technologies, Inc. | Internal relief valve apparatus for use with loading regulators |
| CN201661740U (en) * | 2010-01-20 | 2010-12-01 | 浙江三方控制阀股份有限公司 | Self-operated internal feedback miniature reducing valve |
-
2011
- 2011-01-27 CN CN 201110029097 patent/CN102125706B/en active Active
- 2011-05-23 WO PCT/CN2011/074503 patent/WO2012100473A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201368241Y (en) * | 2009-01-09 | 2009-12-23 | 浙江沃孚阀门有限公司 | Double-spring type pressure-reducing valve |
| CN101625043A (en) * | 2009-08-13 | 2010-01-13 | 凯迈（洛阳）气源有限公司 | High-pressure reducing valve |
| CN101829398A (en) * | 2010-05-20 | 2010-09-15 | 重庆山外山科技有限公司 | Pressure-reducing valve for hemodialysis machine |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN201996893U (en) * | 2011-01-27 | 2011-10-05 | 重庆山外山科技有限公司 | Self-resetting pressure reducing valve for hemodialysis |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-207706A 2009.09.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012100473A1 (en) | 2012-08-02 |
| CN102125706A (en) | 2011-07-20 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Self reset pressure relief valve for hemodialysis Effective date of registration: 20130820 Granted publication date: 20121010 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Gao Guangyong|Chongqing Shanwaishan science and Technology Co Ltd Registration number: 2013990000593 |
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Date of cancellation: 20150203 Granted publication date: 20121010 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Gao Guangyong|Chongqing Shanwaishan science and Technology Co Ltd Registration number: 2013990000593 |
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Denomination of invention: Self reset pressure relief valve for hemodialysis Effective date of registration: 20150205 Granted publication date: 20121010 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Gao Guangyong|Chongqing Shanwaishan science and Technology Co Ltd Registration number: 2015990000104 |
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| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gao Guangyong Inventor after: Ren Yingxiang Inventor after: Liu Zhiyong Inventor before: Gao Guangyong Inventor before: Teng Chaoyu Inventor before: Ren Yingxiang Inventor before: Liu Zhiyong Inventor before: Zhang Changjiang |
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| COR | Change of bibliographic data | ||
| CP03 | Change of name, title or address |
Address after: The 401121 northern New District of Chongqing municipality Mount Huangshan Road No. 5 South Building Mercury Technology Development Center Patentee after: SWS HEMODIALSIS CARE CO., LTD. Address before: 401121, B building, mercury science building, No. 5 Mount Huangshan Avenue, North New District, Chongqing, Yubei District Patentee before: Chongqing Shanwaishan Science & Technology Co., Ltd. |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160531 Granted publication date: 20121010 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: SWS HEMODIALSIS CARE CO., LTD. Registration number: 2015990000104 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20160531 Registration number: 2015990000104 Pledgor after: Chongqing Shanwaishan Science & Technology Co., Ltd. Pledgor before: Gao Guangyong Pledgor before: Chongqing Shanwaishan science and Technology Co Ltd |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Self reset pressure relief valve for hemodialysis Effective date of registration: 20170310 Granted publication date: 20121010 Pledgee: Export Import Bank of China Pledgor: SWS HEMODIALSIS CARE CO., LTD. Registration number: 2017980000035 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: 401123 Tzu Chi Road, Liangjiang New Area, Chongqing, No. 1 Patentee after: SWS HEMODIALSIS CARE CO., LTD. Address before: The 401121 northern New District of Chongqing municipality Mount Huangshan Road No. 5 South Building Mercury Technology Development Center Patentee before: SWS HEMODIALSIS CARE CO., LTD. |
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| CP02 | Change in the address of a patent holder | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210129 Granted publication date: 20121010 Pledgee: Export Import Bank of China Pledgor: SWS HEMODIALYSIS CARE Co.,Ltd. Registration number: 2017980000035 |