CN107412894A - A kind of heat sink of implantable cardiac auxiliary blood pump - Google Patents
A kind of heat sink of implantable cardiac auxiliary blood pump Download PDFInfo
- Publication number
- CN107412894A CN107412894A CN201710671112.3A CN201710671112A CN107412894A CN 107412894 A CN107412894 A CN 107412894A CN 201710671112 A CN201710671112 A CN 201710671112A CN 107412894 A CN107412894 A CN 107412894A
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- CN
- China
- Prior art keywords
- heat
- blood pump
- pump
- blood
- heat sink
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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.)
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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
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
-
- 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
-
- 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
- A61M60/40—Details relating to driving
-
- 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
- A61M60/50—Details relating to control
-
- 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
- A61M2205/04—General characteristics of the apparatus implanted
-
- 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
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/3606—General characteristics of the apparatus related to heating or cooling cooled
Abstract
The present invention relates to a kind of medicine equipment, specifically a kind of heat sink of implantable cardiac auxiliary blood pump.It includes pumping system and drive system, pumping system has blood pump and pump case, and drive system has stator and rotor, it is characterised in that also including heat orientation conducting parts and vacuum heat-insulation part, heat orientation conducting parts are located at the periphery of blood pump stator, and vacuum heat-insulation part is located in blood pump pump case.Wherein heat orientation caused by blood pump stator is imported blood by heat orientation conducting parts；Vacuum heat-insulation part reduces heat to external radiation, reduces blood pump surface temperature rise, avoids causing fire damage to tissue.Simultaneously as the specific heat capacity of blood is very big, and body surface heat sinking function is very powerful, therefore the heat will not cause blood heat to increase.It is vacuum between vacuum heat-insulating layer, to reduce heat to external radiation；The effective temperature rise problem for solving intercorporeal artificial heart-ventricle auxiliary system, make implanted blood pump implant after its temperature rise completely within the scope of Human Physiology.
Description
Technical field
The present invention relates to a kind of medicine equipment, specifically a kind of heat sink of implantable cardiac auxiliary blood pump.
Background technology
Heart failure（Heart failure）It is a kind of disease of serious threat human health.For the maximally effective treatment side of advanced heart failure
Method is heart transplant and artificial heart auxiliary treatment.Because heart transplant donors extremely shortage can not much meet heart failure treatment
Need, market is continuously increased for the demand of artificial heart, thus the research of artificial heart turns into focus.A variety of artificial heart quilts
Find out.Such as the implantable axial flow type blood pump that patent CN104707194A is supported based on blood flow dynamic pressure and Pivot, using built-in
Coil produces alternating magnetic field driving wheel rotation as stator.Patent CN104436338A uses to be made from suspension from suspension technology
Axial flow blood pump, avoid blood damage.Similar, patent CN102247628B embedded type magnetic liquid suspension type centrifugal blood pumps, the hair
It is bright to be suspended and permanent magnet suspension combination technique using dynamic pressure liquid, conventional contact mechanical bearing is instead of, is not had between rotor and stator
There is Mechanical Contact, mechanical wear will not be produced, reduce the effect of rolling to haemocyte, thrombus and haemolysis to greatest extent
Can effectively it mitigate.Although current a variety of artificial hearts are devised, the temperature rise of artificial heart is still a limitation
The serious problems of its prolonged application.The reason for causing artificial heart to produce temperature rise is to produce alternating magnetic field by the use of coil to be used as power
Drive wheel rotation.It is artificial so as to cause and the resistance of coil in itself can cause portion of energy to be distributed in the form of heat
The temperature of heart rises, and in turn results in surrounding tissue and produces fire damage.
The content of the invention
It is an object of the invention to provide one kind can reduce temperature rise, make implanted blood pump implant after its temperature rise completely in people
The heat sink of assistant blood pump for heart within body physiological range.
The present invention includes pumping system and drive system, and pumping system has blood pump and pump case, and drive system has stator and rotor, also
Formed including heat orientation conducting parts with vacuum heat-insulation part, heat orientation conducting parts are located at the periphery of blood pump stator, very
Empty heat insulating member is located in blood pump pump case.Wherein heat orientation caused by blood pump stator is imported blood by heat orientation conducting parts
Liquid；Vacuum heat-insulation part reduces heat to external radiation, reduces blood pump surface temperature rise, avoids causing fire damage to tissue.
Above-mentioned heat orientation conducting parts are made up of lattice-shaped structure, and grid shape can be triangle, quadrangle
(or other geometries).
Above-mentioned grid is made up of the high material of thermal conductivity.
The high material of above-mentioned thermal conductivity is graphene or CNT or silver etc..
Above-mentioned vacuum heat-insulation part is by one layer, two layers or more stratiform structure compositions, each layer are low by thermal conductivity
Metal or nonmetallic composition, are evacuated using pumping process between layers.
The low metal of above-mentioned thermal conductivity can be titanium alloy or stainless steel.
Above-mentioned blood pump can be axial-flow pump or centrifugal pump.
The present invention has the following advantages compared with prior art：
Heat conduction caused by stator can be entered blood by the present invention rapidly, so as to reduce laundry temperature, reduction heat to
External radiation.Simultaneously as the specific heat capacity of blood is very big, and body surface heat sinking function is very powerful, therefore the heat is not
Blood heat can be caused to increase.Vacuum heat-insulation part stratiform structure composition by one layer, two layers or more, each layer is by titanium alloy
Or the low metal of the thermal conductivity such as stainless steel or nonmetallic composition, it is evacuated between layers using pumping process, to reduce heat
Measure to external radiation.The effective temperature rise problem for solving intercorporeal artificial heart-ventricle auxiliary system, plants implanted blood pump
Its temperature rise is completely within the scope of Human Physiology after entering in vivo.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation that the present invention is used for axial-flow pump.
Fig. 2 is the cross-sectional view that the present invention is used for centrifugal pump.
Fig. 3 is the facade structures schematic diagram that the present invention is used for centrifugal pump.
In figure：1. pump barrel, 2. axles, 3. orientation heat conduction grid A, B, 4. impellers, 5. tail stators, 6. pump discharges, 7. are pumped into
Mouthful, 8. axle sleeves, 9. pump cases, 10. coils I, 11. stator silicon steel sheets, 12. impeller blades, 13. vacuum heat-insulating layers, 14. radiation shells
（Stator case）, 15. centrifugal pump housings, 16. centrifugal pump inner casings, 17. centrifugal pump impellers, 18. pump shafts, 19. outlet of centrifugal pump,
20. the magnet in impeller, 21. coils II, 22. small orientation heat conduction grid A, B, C, D, 23. centrifugal pump inlets, in 24. pump shafts
Magnetic patch.
Embodiment
Embodiment one
" pump-machine assembly " that heat sink as shown in Figure 1 is made up of pumping system and motor system two large divisions, pump
System is axial-flow pump system, including pump barrel 1, pump discharge 6, pump intake 7, axle 2, the axle sleeve of pump case 9 and the installation in pump barrel
8th, impeller 4, impeller blade 12, tail stator 5；Motor system includes stator：Silicon steel sheet 11 and coil I 10, rotor：Impeller；
Silicon steel sheet 11 is arranged on the periphery of pump barrel 1, and coil I 10 is arranged on silicon steel sheet 11, and stator peripheral has radiation shell 14；Heat orientation passes
Lead the periphery that part is located at blood pump radiation shell 14 for orientation heat conduction grid 3A, 3B.3A is wider than 3B, is to increase orientation heat conduction grid
Contact area between lattice 3A and pump barrel 1, heat caused by stator is transmitted to pump barrel 1 as soon as possible and pass through the blood that quickly flows
Take away.Vacuum heat-insulation part is vacuum heat-insulating layer 13, between the outside in blood pump shell with orienting heat conduction grid 3A, 3B.
Wherein heat orientation conducting parts are used to heat orientation conduction caused by stator entering blood, reduce the accumulation of blood pump heat；Very
Empty heat insulating member is used to prevent heat from reducing blood pump outer surface temperature rise to external radiation, avoid causing fire damage to surrounding tissue.
Above-mentioned orientation heat conduction grid can be triangle, quadrangle or other geometries.
Above-mentioned orientation heat conduction grid is made up of the high material of thermal conductivity.
The high material of above-mentioned thermal conductivity is graphene or CNT or silver etc..
Above-mentioned vacuum heat-insulation part is by one layer, two layers or more stratiform structure compositions, each layer are low by thermal conductivity
Metal or nonmetallic composition, are evacuated using pumping process between layers.
The low metal of above-mentioned thermal conductivity can be titanium alloy or stainless steel.
Embodiment two
As shown in Figures 2 and 3, " the pump-machine combination that heat sink is made up of pumping system and motor system two large divisions
Body ", pumping system are centrifugal pump system, including centrifugal pump housing 15, centrifugal pump inner casing 16, centrifugal pump impeller 17, pump shaft 18, centrifugation
Magnetic patch 24 in magnet 20, centrifugal pump inlet 23, pump shaft in pump discharge 19, impeller；Motor system includes stator：Coil II
21st, rotor：Pump shaft 18 and centrifugal pump impeller 17；Heat orientation conducting parts are orientation heat conduction grid 22, positioned at blood pump stator：Line
Enclose II 21 periphery, respectively 22A, 22B, 22C, 22D face.Heat is by orienting heat conduction caused by one group of coil located above
22A, 22D face of grid are transmitted to 22B, 22C face contacted with blood flow and taken away by the blood quickly flowed as soon as possible.Under being located at
Heat caused by one group of coil II 21 in face is transmitted to by orienting 22A, 22C, 22D face of heat conduction grid and connect with blood flow as soon as possible
Taken away by the blood quickly gone out in tactile 22B faces.Wherein heat orientation conducting parts are used to pass heat orientation caused by coil
Lead and enter blood, reduce the accumulation of blood pump heat；It is vacuum heat-insulation part 13 between centrifugal pump inner casing 16 and centrifugal pump housing 15, very
Empty heat insulating member 13 is used to prevent heat from reducing blood pump outer surface temperature rise to external radiation, avoid causing fire damage to surrounding tissue.
Remaining is the same as example one.
It is found through experiments that, the outer surface temperature rise of artificial heart blood pump is reduced to 0.2 DEG C by 3 DEG C.Here it is the artificial heart
Cooling overall process of the heat sink of dirty-ventricle auxiliary system in axial-flow pump and centrifugal pump.
Claims (7)
1. a kind of heat sink of implantable cardiac auxiliary blood pump, including pumping system and drive system, pumping system have blood pump and pump
Shell, drive system have stator and rotor, it is characterised in that also fixed including heat orientation conducting parts and vacuum heat-insulation part, heat
It is located at the periphery of blood pump stator to conducting parts, vacuum heat-insulation part is located in blood pump pump case.
A kind of 2. implantable cardiac auxiliary blood pump heat sink according to claim 1, it is characterised in that described heat
Orientation conducting parts are made up of lattice-shaped structure, and grid shape can be triangle, quadrangle.
A kind of 3. implantable cardiac auxiliary blood pump heat sink according to claim 2, it is characterised in that described grid
It is made up of the high material of thermal conductivity.
A kind of 4. implantable cardiac auxiliary blood pump heat sink according to claim 3, it is characterised in that described thermal conductivity
The high material of rate is graphene or CNT or silver.
A kind of 5. implantable cardiac auxiliary blood pump heat sink according to claim 1, it is characterised in that described vacuum
Heat insulating member by one layer, two layers or more stratiform structure composition, each layer by the low metal of thermal conductivity or it is nonmetallic form, layer
It is evacuated between layer using pumping process.
A kind of 6. implantable cardiac auxiliary blood pump heat sink according to claim 5, it is characterised in that described thermal conductivity
The low metal of rate is titanium alloy or stainless steel.
A kind of 7. implantable cardiac auxiliary blood pump heat sink according to claim 1, it is characterised in that described blood pump
It is axial-flow pump or centrifugal pump.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671112.3A CN107412894A (en) | 2017-08-08 | 2017-08-08 | A kind of heat sink of implantable cardiac auxiliary blood pump |
| CN201810006586.0A CN108273148A (en) | 2017-08-08 | 2018-01-04 | A kind of heat sink of implantable cardiac auxiliary blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671112.3A CN107412894A (en) | 2017-08-08 | 2017-08-08 | A kind of heat sink of implantable cardiac auxiliary blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107412894A true CN107412894A (en) | 2017-12-01 |
Family
ID=60437541
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710671112.3A Pending CN107412894A (en) | 2017-08-08 | 2017-08-08 | A kind of heat sink of implantable cardiac auxiliary blood pump |
| CN201810006586.0A Pending CN108273148A (en) | 2017-08-08 | 2018-01-04 | A kind of heat sink of implantable cardiac auxiliary blood pump |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006586.0A Pending CN108273148A (en) | 2017-08-08 | 2018-01-04 | A kind of heat sink of implantable cardiac auxiliary blood pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107412894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974562A (en) * | 2021-11-03 | 2022-01-28 | 上海佳哲医疗科技有限公司 | Implantable medical detection equipment and processing method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3634528B1 (en) | 2017-06-07 | 2023-06-07 | Shifamed Holdings, LLC | Intravascular fluid movement devices, systems, and methods of use |
| CN111556763B (en) | 2017-11-13 | 2023-09-01 | 施菲姆德控股有限责任公司 | Intravascular fluid movement device and system |
| EP4085965A1 (en) | 2018-02-01 | 2022-11-09 | 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636821B2 (en) * | 1990-03-08 | 1994-05-18 | 健二 山崎 | Implantable auxiliary artificial heart |
| US5947892A (en) * | 1993-11-10 | 1999-09-07 | Micromed Technology, Inc. | Rotary blood pump |
| US5883449A (en) * | 1996-08-07 | 1999-03-16 | Hunter Fan Company | Ceiling fan motors |
| AU3105899A (en) * | 1998-03-30 | 1999-10-18 | Nimbus, Inc. | Sealed motor stator assembly for implantable blood pump |
| DE29821564U1 (en) * | 1998-12-02 | 2000-07-13 | Impella Cardiotech Ag | Fluid-cooled electric motor with high power density |
| US20050261543A1 (en) * | 2004-05-18 | 2005-11-24 | Yusuke Abe | Implantable artificial ventricular assist device |
| CN103893849B (en) * | 2014-04-15 | 2016-01-20 | 中南大学 | A kind of full-implantation type axial blood pump of air gaps magnetically-actuated and control method thereof |
| CN206017200U (en) * | 2016-08-16 | 2017-03-15 | 华发户 | A kind of portable small-sized fanses |
| CN208809184U (en) * | 2017-08-08 | 2019-05-03 | 长治市久安人工心脏科技开发有限公司 | A kind of cooling device of implantable cardiac auxiliary blood pump |
-
2017
- 2017-08-08 CN CN201710671112.3A patent/CN107412894A/en active Pending
-
2018
- 2018-01-04 CN CN201810006586.0A patent/CN108273148A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974562A (en) * | 2021-11-03 | 2022-01-28 | 上海佳哲医疗科技有限公司 | Implantable medical detection equipment and processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108273148A (en) | 2018-07-13 |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171201 |