CN2754637Y - Impeller of heart pump for preventing hemolysis and thrombus - Google Patents
Impeller of heart pump for preventing hemolysis and thrombus Download PDFInfo
- Publication number
- CN2754637Y CN2754637Y CNU2004200098957U CN200420009895U CN2754637Y CN 2754637 Y CN2754637 Y CN 2754637Y CN U2004200098957 U CNU2004200098957 U CN U2004200098957U CN 200420009895 U CN200420009895 U CN 200420009895U CN 2754637 Y CN2754637 Y CN 2754637Y
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- Prior art keywords
- pump
- impeller
- thrombus
- flow
- heart pump
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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 - Lifetime
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- 206010018910 Haemolysis Diseases 0.000 title claims abstract description 13
- 208000007536 Thrombosis Diseases 0.000 title abstract description 8
- 230000008588 hemolysis Effects 0.000 title abstract description 6
- 230000002785 anti-thrombosis Effects 0.000 claims description 7
- 239000003146 anticoagulant agent Substances 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 239000008280 blood Substances 0.000 abstract description 16
- 210000004369 blood Anatomy 0.000 abstract description 16
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 2
- 230000016507 interphase Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 208000019622 heart disease Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
Images
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/20066—Measuring inelastic scatter of gamma rays, e.g. Compton effect
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/637—Specific applications or type of materials liquid
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an impeller of a heart pump for preventing hemolysis and thrombus, which relates to a centrifugal or mixed flow type pump pressure device which is suitable for a continuous flow artificial heart. In order to relieve the formation of the thrombus, the utility model is characterized in that a group of back blades with interphase length is additionally arranged on a back cover plate, slit flow derived from an outlet of the impeller in the pump can be effectively inhibited and the flow state between the back cover plate of the impeller and a pump volute chamber is changed. The utility model reaches the effect that the shear stress of liquid near a solid surface is reduced, and improves the hemolysis performance of a blood pump. Simultaneously, the back blade arranged on the back cover plate is also a flow disturbance device, stagnation region in blood can be basically eliminated and the danger of the formation of the thrombus in the blood pump is reduced.
Description
Technical field
This utility model relates to a kind of mobile auxiliary device that is applicable to size at 5 to 50 millimeters centrifugal or mixed-flow pump, be particularly related to the auxiliary flow structure of the centrifugal or mixed-flow pump pressure device of a kind of being suitable for " Continuous Flow artificial heart ", belong to the micromachine electronic technology field.
Background technology
In recent years, the patient of heart disease has the trend that increases gradually in worldwide, yet the transplantation donor wretched insufficiency makes most of cardiac give treatment to difficulty, even has lost the chance of survival.As the transition or the nonvolatil blood pumping installations of live body heart transplantation, artificial heart is absolutely necessary.Therefore, it is very necessary developing high performance artificial heart pump (or blood pump).
In the past, " type of flapping heart pump " must be many application as left ventricular assist device.But, the trend that is replaced by " Continuous Flow heart pump " is gradually arranged owing to there are shortcomings such as volume is big, complex structure.With centrifugal heart pump is that " the Continuous Flow heart pump " of representative has that simple structure, volume are small and exquisite, blood flow is easy to advantages such as control, and making the patient who suffers from serious heart disease return society again becomes possibility.Because " Continuous Flow heart pump " development time is short, and blood pump causes certain damage to blood easily generally with the high speed rotating of the thousands of commentaries on classics of per minute.So also there are some technical issues that need to address in existing " Continuous Flow heart pump " when having above-mentioned advantage, be exactly two wherein very outstanding hang-ups as haemolysis and thrombosis.Conventional heart pump impeller is the simple structure that adopts fixed blade on the cover plate.In order to solve the problem of thrombosis, available technology adopting adds flushing hole on back shroud.This method can be alleviated the formation of thrombosis to a certain extent, but DeGrain requires further improvement.
The utility model content
The purpose of this utility model is to propose a kind of heart pump impeller with anti-hemolysis, antithrombotic property, improving the performance of centrifugal blood pump, thereby improves the global reliability of heart pump.
The technical solution of the utility model is as follows: a kind of anti-hemolysis and antithrombotic heart pump impeller, comprise back shroud and the blade that is fixed on back shroud one side, the inboard that is positioned at the blade import on described back shroud is provided with flushing hole, it is characterized in that: the opposite side at described back shroud is provided with one group of back blades.
Technical characterictic of the present utility model also is: described back blades adopts the structure that is different ratios and the alternate layout of length with respect to impeller diameter.Back blades can adopt circular arc type, spiral line type or similar spiral line style.The quantity of back blades is preferably 4 to 16 pieces.
This utility model compared with prior art, have the following advantages and technique effect: it can contain the slit flow that is derived from impeller outlet in the pump effectively, change the flow regime between back shroud of impeller and pump volute chamber (or claiming pumping chamber), reach the effect that reduces the shear stress between fluid and the solid wall surface, reduce the haemolysis of blood pump.Simultaneously, the back blades that is located on the back shroud also is the flow disturbance device, can eliminate the viscous flow zone of blood substantially, reduces thrombosed danger in blood pump.This utility model also can be used on the centrifugal or mixed-flow pump of various uses, to improve the various performances of pump, as hydraulic performance, anti-hemolysis and antithrombotic property etc.
Description of drawings
The anti-hemolysis that Fig. 1 provides for this utility model and the structural representation of antithrombotic blood pump impeller.
The structure chart of the embodiment that Fig. 2 arranges on back shroud for back blades.
The specific embodiment
Fig. 1 is anti-hemolysis and antithrombotic blood pump blade wheel structure sketch map (is example with the receded disk impeller).This impeller comprises back shroud 3 and the one group of back blades 2 that is fixed on the blade 1 of back shroud one side and is arranged on the back shroud opposite side; The inboard that is positioned at the blade import on back shroud 3 is provided with flushing hole 4.The height of back blades 2 generally is less than the height of impeller blade 1.Described back blades adopts the structure that is different ratios and the alternate layout of length with respect to impeller diameter.Back blades can adopt circular arc type, spiral line type or similar spiral line style, and the quantity of its blade is preferably 4 to 16 pieces.
After the impeller back side adds back blades 2, flow to blood between back shroud of impeller 3 and the pump volute chamber 5 under action of centrifugal force from flushing hole 4, carried to impeller outlet with fast speeds, the stagnant area of having reduced blood makes the probability of thrombosis generation reduce on the one hand; Also improved the fluidal texture in the gap area between back shroud of impeller 3 and the pump volute chamber 5 on the other hand; can eliminate or alleviate because the flow performances such as whirlpool that fairly large backflow causes; reach the purpose that reduces mobile shear stress, help improving the haemolysis performance of blood pump.
The structure chart of the embodiment that Fig. 2 arranges on back shroud for back blades.In this case, impeller is for rotating by counter clockwise direction.Back blades is 6 pieces, has adopted the vane type line of single circular shape.And the back blades of 3 pieces of long back blades and 3 pieces of weak points is alternate layout.The back blades of the alternate layout of this length, can make and guarantee bigger through-current capability in back blades import department, and guarantee back blades to mobile effective control near close impeller outlet, the energy of flow between back blades keeps fluidised form preferably like this, thereby improves the hydraulic performance of impeller of pump.
Claims (4)
1. an anti-hemolysis and antithrombotic heart pump impeller, comprise back shroud (3) and be arranged on the blade (1) of back shroud one side, on described back shroud, be positioned at blade import inboard and be provided with flushing hole (4), it is characterized in that: be provided with one group of back blades (2) at described back shroud opposite side.
2. heart pump impeller according to claim 1 is characterized in that: described back blades adopts the structure that is different ratios and the alternate layout of length with respect to impeller diameter.
3. heart pump impeller according to claim 1 is characterized in that: described back blades adopts the vane type line of circular arc, spiral yarn shaped or similar spiral shape.
4. according to claim 1,2 or 3 described heart pump impellers, it is characterized in that: the quantity of described back blades is 4 to 16 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200098957U CN2754637Y (en) | 2004-11-26 | 2004-11-26 | Impeller of heart pump for preventing hemolysis and thrombus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200098957U CN2754637Y (en) | 2004-11-26 | 2004-11-26 | Impeller of heart pump for preventing hemolysis and thrombus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2754637Y true CN2754637Y (en) | 2006-02-01 |
Family
ID=35928271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200098957U Expired - Lifetime CN2754637Y (en) | 2004-11-26 | 2004-11-26 | Impeller of heart pump for preventing hemolysis and thrombus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2754637Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581307B (en) * | 2009-05-20 | 2011-04-27 | 清华大学 | Hydrodynamic float vane type microminiature pump |
| CN102665786A (en) * | 2009-12-23 | 2012-09-12 | Ecp发展有限责任公司 | Conveying blades for a compressible rotor |
| CN107551342A (en) * | 2017-09-30 | 2018-01-09 | 北京安生生物技术有限责任公司 | A kind of receded disk impeller for reducing haemolysis and thrombus and occurring |
| CN107693868A (en) * | 2017-08-24 | 2018-02-16 | 清华大学 | heart pump method for designing impeller and impeller |
| CN110665078A (en) * | 2019-10-31 | 2020-01-10 | 北京清科博动科技有限公司 | Centrifugal heart pump with low hemolysis rate |
| CN111249551A (en) * | 2020-01-21 | 2020-06-09 | 深圳汉诺医疗科技有限公司 | Worm type pump head for artificial heart, artificial heart pump and ECMO equipment |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| WO2022262242A1 (en) * | 2021-06-15 | 2022-12-22 | 浙江迪远医疗器械有限公司 | Blood pump |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| WO2023179239A1 (en) * | 2022-03-21 | 2023-09-28 | 深圳核心医疗科技有限公司 | Blood pump |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
-
2004
- 2004-11-26 CN CNU2004200098957U patent/CN2754637Y/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581307B (en) * | 2009-05-20 | 2011-04-27 | 清华大学 | Hydrodynamic float vane type microminiature pump |
| CN102665786A (en) * | 2009-12-23 | 2012-09-12 | Ecp发展有限责任公司 | Conveying blades for a compressible rotor |
| CN102665786B (en) * | 2009-12-23 | 2015-06-10 | Ecp发展有限责任公司 | Conveying blades for a compressible rotor |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| CN107693868B (en) * | 2017-08-24 | 2023-09-05 | 北京清科博动科技有限公司 | Design method of heart pump impeller and impeller |
| CN107693868A (en) * | 2017-08-24 | 2018-02-16 | 清华大学 | heart pump method for designing impeller and impeller |
| CN107551342A (en) * | 2017-09-30 | 2018-01-09 | 北京安生生物技术有限责任公司 | A kind of receded disk impeller for reducing haemolysis and thrombus and occurring |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US12076545B2 (en) | 2018-02-01 | 2024-09-03 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| CN110665078A (en) * | 2019-10-31 | 2020-01-10 | 北京清科博动科技有限公司 | Centrifugal heart pump with low hemolysis rate |
| CN111249551B (en) * | 2020-01-21 | 2020-11-24 | 深圳汉诺医疗创新技术有限公司 | Worm type pump head for artificial heart, artificial heart pump and ECMO equipment |
| US11801377B2 (en) | 2020-01-21 | 2023-10-31 | Chinabridge (Shenzhen) Medical Technology Co., Ltd | Centrifugal blood pump |
| CN111249551A (en) * | 2020-01-21 | 2020-06-09 | 深圳汉诺医疗科技有限公司 | Worm type pump head for artificial heart, artificial heart pump and ECMO equipment |
| WO2022262242A1 (en) * | 2021-06-15 | 2022-12-22 | 浙江迪远医疗器械有限公司 | Blood pump |
| WO2023179239A1 (en) * | 2022-03-21 | 2023-09-28 | 深圳核心医疗科技有限公司 | Blood pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141126 Granted publication date: 20060201 |