CN104056314A - Implantable mini-type shaftless efficient heat transfer axial blood pump - Google Patents
Implantable mini-type shaftless efficient heat transfer axial blood pump Download PDFInfo
- Publication number
- CN104056314A CN104056314A CN201410281357.1A CN201410281357A CN104056314A CN 104056314 A CN104056314 A CN 104056314A CN 201410281357 A CN201410281357 A CN 201410281357A CN 104056314 A CN104056314 A CN 104056314A
- Authority
- CN
- China
- Prior art keywords
- guide vane
- rotor
- hemisphere
- rear guide
- sleeve
- 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.)
- Pending
Links
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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
Abstract
The invention discloses an implantable mini-type shaftless efficient heat transfer axial blood pump, which comprises a sleeve, a pump body and a drive coil, wherein the pump body comprises a front guide vane, a rotor and a rear guide vane; the rotor comprises a rotor vane, a permanent magnet and convex hemispheres arranged at both end parts of the rotor; the front guide vane and the rear guide vane are respectively provided with a concave hemisphere which corresponds to the convex hemispheres; a small hole is formed in the bottom part of each concave hemisphere; the front guide vane and the rear guide vane are respectively fixed to both ends of the interior of the sleeve; the convex hemispheres at both ends of the rotor are respectively matched with the concave hemispheres of the front guide vane and the rear guide vane to form hemisphere support structures. As the hemisphere support structures are adopted and a certain degree of deviation of axes of the front guide vane, the rear guide vane and the rotor can be borne due to the existence of the small holes, the processing and installation difficulty is reduced; moreover, ruby coatings are respectively arranged on surfaces of the convex hemispheres and the concave hemispheres, and thus, heat at the gaps of the hemisphere support structures can be rapidly transferred to blood and is brought away by the blood, and further, the heat transfer efficiency of the gaps is improved, and the phenomenon that a large number of blood cells and thrombogenesis are avoided.
Description
Technical field
The present invention relates to a kind of axial flow blood pump, particularly the axial flow blood pump of the miniature shaftless efficient heat transfer of a kind of implantable.
Background technology
World Health Organization's statistics demonstration, cardiovascular disease is the first killer who threatens human health always, accounts for 30% left and right of the total death toll in the whole world, the effective way for the treatment of heart failure in latter stage at end is heart transplantation or adopts implanted ventricular assist device.Although heart transplantation has obtained very ten-strike, heart donor problem is difficult to solve, and develops long-term implantable Small blood pump very important and urgent.The blood pump of clinical practice is now mainly taking axial-flow pump as main, and the flow performance of axial-flow pump is better than centrifugal pump, and larger blood flow can be provided.The flow field of blood pump inside is very complicated, and the flow resistance of the internal structure of blood pump to blood and the efficiency of blood pump have a significant impact, and hemocyte relatively also can break and cause haemolysis under high shear stress environment in blood pump.Due to the existence that has shaft type axial-flow pump in pilot blade and rotor contact area and rear guide vane and gap, rotor contact area, cause gap location have amount of heat produce and shear stress larger, gap location is the major part that blood coagulation occurs, thereby patient's life is formed greatly and threatened, and therefore a kind of axial-flow pump of the generation that can reduce gap location blood coagulation is extremely important.
Summary of the invention
In order to overcome the deficiencies in the prior art, the miniature shaftless axial flow blood pump of implantable of the formation that the invention provides a kind of long service life, processing assembling is easy, heat-transfer effect is good, can effectively reduce thrombosis.
The technical solution adopted for the present invention to solve the technical problems is:
An axial flow blood pump for the miniature shaftless efficient heat transfer of implantable, comprises sleeve, is arranged on the pump housing in sleeve and is arranged on the drive coil outside sleeve, the described pump housing comprises the pilot blade that is positioned at sleeve Inner Front End, be positioned at the rotor at sleeve middle part, and be positioned at the rear guide vane of sleeve afterbody, described rotor comprises rotor blade, permanent magnet and be arranged on the protruding hemisphere of two ends of rotor end, on described pilot blade, be provided with pilot blade blade, on described rear guide vane, be provided with rear guide vane blade, on described pilot blade and rear guide vane, be provided with the recessed hemisphere corresponding with protruding hemisphere, described pilot blade and rear guide vane are fixed to respectively the two ends of sleeve inner, the protruding hemisphere of described two ends of rotor respectively with pilot blade, the recessed hemisphere of rear guide vane coordinates formation hemisphere supporting construction, with supporting and location rotor, described protruding hemisphere and recessed hemisphere surface are provided with ruby coating.
Described recessed hemisphere bottom is provided with a vesicle.
Described two ends of rotor is also respectively arranged with front pyramidal structure, rear pyramidal structure.
Described permanent magnet is embedded in internal rotor, and the structure of the described pump housing except permanent magnet all adopts titanium alloy material to make.
The invention has the beneficial effects as follows: the present invention is by adopting the design of concavo-convex hemisphere and vesicle structure can ensure that rotor, stator contact position, front and back are subject to same wearing and tearing, and then still can pass through semiglobe support rotor, thereby therefore can improve the service life of pump and can tolerate rotor and front and back stator axis departing to a certain degree reduced processing and installation difficulty; Further, the present invention is by being provided with ruby coating at protruding hemisphere and recessed hemisphere surface, and the heat of semiglobe gap location can pass to fast blood and be taken away and then improved the heat transfer efficiency of gap location by blood, can weaken the formation of thrombosis.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structure diagram of the present invention;
Fig. 2 is the structure chart of pump housing part;
Fig. 3 is the pilot blade structure chart of the pump housing;
Fig. 4 is the part-structure figure of the rotor of the pump housing;
Fig. 5 is the rear guide vane structure chart of the pump housing;
Detailed description of main elements: 1-pilot blade blade; 2-rotor blade; 3-rear guide vane blade; 4-pilot blade; 5-rotor; 6-rear guide vane; The protruding hemisphere of 7-; The recessed hemisphere of 8-; Pyramidal structure after pyramidal structure 10-before 9-; 11-permanent magnet; 12-drive coil, 13-sleeve, 14-vesicle.
Detailed description of the invention
Referring to figs. 1 through Fig. 5, Fig. 1 to Fig. 5 is the structural representation of a specific embodiment of the present invention, as shown in the figure, the axial flow blood pump of the miniature shaftless efficient heat transfer of a kind of implantable, comprises sleeve 13, is arranged on the pump housing in sleeve 13 and is arranged on the drive coil 12 outside sleeve 13, the described pump housing comprises the pilot blade 4 that is positioned at sleeve 13 Inner Front End portions, be positioned at the rotor 5 at sleeve 13 middle parts, and be positioned at the rear guide vane 6 of sleeve 13 afterbodys, described rotor 5 comprises rotor blade 2, permanent magnet 11, front pyramidal structure 9, rear pyramidal structure 10, protruding hemisphere 7, described front pyramidal structure 9, rear pyramidal structure 10 arranges respectively rotor 5 two ends, described protruding hemisphere 7 disposes two, and be separately positioned on front pyramidal structure 9, the end of rear pyramidal structure 10, on described pilot blade 4, be provided with pilot blade blade 1, on described rear guide vane 6, be provided with rear guide vane blade 3, on described pilot blade 4 and rear guide vane 6, be provided with the recessed hemisphere 8 corresponding with protruding hemisphere 7, described recessed hemisphere 8 bottoms are provided with a vesicle 14, described protruding hemisphere 7 and recessed hemisphere 8 surfaces are provided with ruby coating, described pilot blade 4 and rear guide vane 6 are fixed to respectively the two ends of sleeve 13 inside, the protruding hemisphere 7 at described rotor 5 two ends respectively with pilot blade 4, the recessed hemisphere 8 of rear guide vane 6 coordinates formation hemisphere supporting construction, with supporting and location rotor 5.
Described permanent magnet 11 is embedded in rotor 5 inside, in the pump housing, remaining part is non-magnet_conductible material, as titanium alloy, because titanium alloy is magnetic conduction not, therefore can obtain larger transfer of torque, and titanium alloy quality is light and have good biocompatibility, certainly in implementation process, also can adopt the alloy material such as niobium, tantalum or other novel non-magnet_conductible materials; Described sleeve 13 can adopt cylindrical; The front end of pump body has been the pilot blade 4 of guide functions, mid portion is rotor 5, and afterbody is rear guide vane 6, by sleeve 13, three is linked together, the semiglobe that rotor 5 is made up of protruding hemisphere 7, recessed hemisphere 8 respectively supports, and forms a shaftless rotor supports location structure.
The present invention, because can ensureing rotor 2, pilot blade 1, rear guide vane 3 contact positions, the design of concavo-convex hemisphere and vesicle structure is subject to same wearing and tearing, and then still can pass through semiglobe support rotor, thereby therefore can improve the service life of pump and can tolerate rotor and front and back stator axis departing to a certain degree reduced processing and installation difficulty; Further, the present invention is by being provided with ruby coating at protruding hemisphere 7 and recessed hemisphere 8 surfaces, and the heat of semiglobe gap location can pass to fast blood and be taken away and then improved the heat transfer efficiency of gap location by blood, has reduced the formation probability of thrombosis.
In the present invention, drive coil 12 adopts stalloy solenoid, be arranged on outside sleeve 13, produce alternating magnetic field by the size of current in controller control Electromagnetic Drive coil and direction and drive rotor, rotating speed can reach 11000-13000 rev/min, thereby can produce the pressure reduction of 100-120mmHg, drive blood to circulate.
Above better enforcement of the present invention is illustrated; certainly; the present invention can also adopt form different from the embodiment described above; the conversion being equal to that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or accordingly change, all should belong in protection scope of the present invention.
Claims (4)
1. an axial flow blood pump for the miniature shaftless efficient heat transfer of implantable, is characterized in that: comprise sleeve (13), be arranged on the pump housing in sleeve (13) and be arranged on the outer drive coil (12) of sleeve (13), the described pump housing comprises the pilot blade (4) that is positioned at sleeve (13) Inner Front End, be positioned at the rotor (5) at sleeve (13) middle part, and be positioned at the rear guide vane (6) of sleeve (13) afterbody, described rotor (5) comprises rotor blade (2), permanent magnet (11) and be arranged on the protruding hemisphere (7) of rotor (5) end, two ends, on described pilot blade (4), be provided with pilot blade blade (1), on described rear guide vane (6), be provided with rear guide vane blade (3), on described pilot blade (4) and rear guide vane (6), be provided with the recessed hemisphere (8) corresponding with protruding hemisphere (7), described pilot blade (4) and rear guide vane (6) are fixed to respectively the inner two ends of sleeve (13), the protruding hemisphere (7) at described rotor (5) two ends respectively with pilot blade (4), the recessed hemisphere (8) of rear guide vane (6) coordinates formation hemisphere supporting construction, with supporting and location rotor (5), described protruding hemisphere (7) and recessed hemisphere (8) surface are provided with ruby coating.
2. the axial flow blood pump of the miniature shaftless efficient heat transfer of a kind of implantable according to claim 1, is characterized in that: described recessed hemisphere (8) bottom is provided with a vesicle (14).
3. the axial flow blood pump of the miniature shaftless efficient heat transfer of a kind of implantable according to claim 1, is characterized in that: described rotor (5) two ends are also respectively arranged with front pyramidal structure (9), rear pyramidal structure (10).
4. the axial flow blood pump of the miniature shaftless efficient heat transfer of a kind of implantable according to claim 1, it is characterized in that: described permanent magnet (11) is embedded in rotor (5) inside, the structure of the described pump housing except permanent magnet (11) all adopts titanium alloy material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281357.1A CN104056314A (en) | 2014-06-20 | 2014-06-20 | Implantable mini-type shaftless efficient heat transfer axial blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281357.1A CN104056314A (en) | 2014-06-20 | 2014-06-20 | Implantable mini-type shaftless efficient heat transfer axial blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104056314A true CN104056314A (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410281357.1A Pending CN104056314A (en) | 2014-06-20 | 2014-06-20 | Implantable mini-type shaftless efficient heat transfer axial blood pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104056314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456617A (en) * | 2017-08-08 | 2017-12-12 | 长治市久安人工心脏科技开发有限公司 | One kind is without rear guide vane Embedded Axial Blood Pump |
Citations (16)
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|---|---|---|---|---|
| US5527159A (en) * | 1993-11-10 | 1996-06-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Rotary blood pump |
| US5707218A (en) * | 1995-04-19 | 1998-01-13 | Nimbus, Inc. | Implantable electric axial-flow blood pump with blood cooled bearing |
| CN2462933Y (en) * | 2001-01-16 | 2001-12-05 | 田步升 | Cardiovascular power pump |
| WO2004096320A1 (en) * | 2003-04-30 | 2004-11-11 | Mitsubishi Heavy Industries, Ltd. | Artificial cardiac pump |
| CN1631458A (en) * | 2005-02-02 | 2005-06-29 | 北京工业大学 | Bearing free, engine free and axle free complete artificial heart pump |
| US20070156006A1 (en) * | 2005-06-06 | 2007-07-05 | The Cleveland Clinic Foundation And Foster-Miller, Inc. | Blood pump |
| CN101015716A (en) * | 2007-03-09 | 2007-08-15 | 清华大学 | Implanted non-contact minisize axial-flow blood pump |
| CN101112628A (en) * | 2006-11-30 | 2008-01-30 | 中国医学科学院阜外心血管病医院 | Miniature implantable axial flow type assistant blood pump for heart |
| CN201208423Y (en) * | 2008-01-17 | 2009-03-18 | 同济大学附属东方医院 | Pump and machine unification implanted micro axial flow blood pump |
| CN101401981A (en) * | 2008-11-14 | 2009-04-08 | 清华大学 | Implanted miniature streamlined shaft bloodshed pump |
| US20090093796A1 (en) * | 2007-10-08 | 2009-04-09 | Ais Gmbh Aachen Innovative Solutions | Catheter device |
| CN102019002A (en) * | 2010-12-03 | 2011-04-20 | 中山哈特人工心脏实验室有限公司 | Implanted hollow minimal axial blood pump |
| CN102397598A (en) * | 2011-11-18 | 2012-04-04 | 武汉理工大学 | Compact axial-flow magnetic-levitation artificial heart pump |
| US20130096364A1 (en) * | 2011-10-13 | 2013-04-18 | Steven H. Reichenbach | Pump and method for mixed flow blood pumping |
| US20130281762A1 (en) * | 2011-11-28 | 2013-10-24 | MI-VAD, Inc. | Ventricular Assist Device and Method |
| US20140275722A1 (en) * | 2013-03-14 | 2014-09-18 | Thoratec Corporation | Blood pump rotor bearings |
-
2014
- 2014-06-20 CN CN201410281357.1A patent/CN104056314A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5527159A (en) * | 1993-11-10 | 1996-06-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Rotary blood pump |
| US5707218A (en) * | 1995-04-19 | 1998-01-13 | Nimbus, Inc. | Implantable electric axial-flow blood pump with blood cooled bearing |
| CN2462933Y (en) * | 2001-01-16 | 2001-12-05 | 田步升 | Cardiovascular power pump |
| WO2004096320A1 (en) * | 2003-04-30 | 2004-11-11 | Mitsubishi Heavy Industries, Ltd. | Artificial cardiac pump |
| CN1631458A (en) * | 2005-02-02 | 2005-06-29 | 北京工业大学 | Bearing free, engine free and axle free complete artificial heart pump |
| US20070156006A1 (en) * | 2005-06-06 | 2007-07-05 | The Cleveland Clinic Foundation And Foster-Miller, Inc. | Blood pump |
| CN101112628A (en) * | 2006-11-30 | 2008-01-30 | 中国医学科学院阜外心血管病医院 | Miniature implantable axial flow type assistant blood pump for heart |
| CN101015716A (en) * | 2007-03-09 | 2007-08-15 | 清华大学 | Implanted non-contact minisize axial-flow blood pump |
| US20090093796A1 (en) * | 2007-10-08 | 2009-04-09 | Ais Gmbh Aachen Innovative Solutions | Catheter device |
| CN201208423Y (en) * | 2008-01-17 | 2009-03-18 | 同济大学附属东方医院 | Pump and machine unification implanted micro axial flow blood pump |
| CN101401981A (en) * | 2008-11-14 | 2009-04-08 | 清华大学 | Implanted miniature streamlined shaft bloodshed pump |
| CN102019002A (en) * | 2010-12-03 | 2011-04-20 | 中山哈特人工心脏实验室有限公司 | Implanted hollow minimal axial blood pump |
| US20130096364A1 (en) * | 2011-10-13 | 2013-04-18 | Steven H. Reichenbach | Pump and method for mixed flow blood pumping |
| CN102397598A (en) * | 2011-11-18 | 2012-04-04 | 武汉理工大学 | Compact axial-flow magnetic-levitation artificial heart pump |
| US20130281762A1 (en) * | 2011-11-28 | 2013-10-24 | MI-VAD, Inc. | Ventricular Assist Device and Method |
| US20140275722A1 (en) * | 2013-03-14 | 2014-09-18 | Thoratec Corporation | Blood pump rotor bearings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456617A (en) * | 2017-08-08 | 2017-12-12 | 长治市久安人工心脏科技开发有限公司 | One kind is without rear guide vane Embedded Axial Blood Pump |
| CN107456617B (en) * | 2017-08-08 | 2023-11-14 | 长治市久安人工心脏科技开发有限公司 | Implanted axial flow blood pump without rear guide vane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |