CN104225697A - Pyrolytic carbon cycling auxiliary blood pump - Google Patents

Pyrolytic carbon cycling auxiliary blood pump Download PDF

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Publication number
CN104225697A
CN104225697A CN 201410539856 CN201410539856A CN104225697A CN 104225697 A CN104225697 A CN 104225697A CN 201410539856 CN201410539856 CN 201410539856 CN 201410539856 A CN201410539856 A CN 201410539856A CN 104225697 A CN104225697 A CN 104225697A
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China
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rotor
front
bearing
pyrolytic carbon
pump
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CN 201410539856
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Chinese (zh)
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周建业
胡盛寿
胡春雷
柳光茂
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中国医学科学院阜外心血管病医院
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Priority to CN 201410539856 priority Critical patent/CN104225697A/en
Publication of CN104225697A publication Critical patent/CN104225697A/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/12Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps implantable into the body
    • A61M1/122Heart assist devices, i.e. for assisting an ailing heart, using additional pumping means in the blood circuit

Abstract

The invention discloses a pyrolytic carbon cycling auxiliary blood pump which is made of pyrolytic carbon materials. The pyrolytic carbon cycling auxiliary blood pump comprises an inflow bend, a coil shell, a pump pipe, a rear guide vane tube, a rear guide vane, an outflow bend, a front rotating shaft, a front bearing end cover, a rotor front section, a rotor front guide vane, a rotor rear section, a rear rotating shaft and a rear bearing end cover. A flow channel is in a U shape. The rotor front section and the rotor rear section are connected to form a rotor. A blood flow inlet of the inflow bend is perpendicular to the axis of the rotor, and a blood flow outlet of the outflow bend is perpendicular to the axis of the rotor. A front bearing is fixed in the outer side wall of the inflow bend, and a rear bearing is fixed in the outer side wall of the outflow bend. According to the pyrolytic carbon cycling auxiliary blood pump, the pyrolytic carbon material is used for replacing a traditional titanium alloy material, the induction magnetic hysteresis effect of the metal material is removed, and thus the output efficiency of the cycling auxiliary pump is improved; meanwhile, the breakthrough on the aspect of processing and manufacturing and the aspect of structural features is brought about, and the comprehensive property and the cost performance of the cycling auxiliary pump are further improved.

Description

热解碳循环辅助血泵 Pyrolytic carbon pump blood circulation assistance

技术领域 FIELD

[0001] 本发明涉及医疗仪器技术领域,是一种热解碳循环辅助血泵,它由生物相容性好的、没有感应磁滞效应的热解碳材料制造,流道为U形(带弯管的)的辅助血泵,采用该种材质和结构可以大幅度地提高输出效率,同时降低血栓形成风险。 [0001] The present invention relates to a technical field of medical instruments, pyrolytic carbon is a blood circulation assistance pump, which consists of good biocompatibility, no hysteresis effect induced pyrolytic carbon material, U-shaped flow path (with elbow) of the auxiliary pump blood, using this kind of materials and structures can greatly improve the output efficiency, while reducing the risk of thrombosis.

背景技术 Background technique

[0002] 心力衰竭造成心脏的泵血能力减弱后,安装循环辅助血泵可以延长患者的生命。 After the [0002] failure caused by diminished pumping ability of the heart, circulatory assist blood pump installation can extend the lives of patients. 循环辅助血泵可以补偿或替代心脏功能,降低心脏的前负荷和做功,恢复和平衡心肌代谢和营养,有利于恢复心功能,辅助循环血泵在心源性休克救治、心脏移植前过渡支持治疗、心力衰竭、心肺复苏方面有巨大的应用潜力。 Auxiliary blood circulation pump can compensate or replace heart function and reduce cardiac preload and work to restore balance and myocardial metabolism and nutrition, beneficial to restore heart function and blood circulation pump auxiliary treatment of cardiogenic shock, cardiac transplantation transitional and supportive treatment, heart failure, cardiopulmonary resuscitation aspects have great potential.

[0003] 目前辅助血泵主要零件均由TC4钛合金制造,TC4虽然生物相容性较好,但存在感应磁滞损耗大、质量大、制造成本高、长期使用可能腐蚀的问题。 [0003] The main parts of the current auxiliary pump blood by TC4 titanium alloy, TC4 although good biocompatibility, but there are large induction hysteresis loss, high quality, high manufacturing costs, long-term use may be corrosion problems. 这是因为钛合金虽不是磁性材料,但是其电阻率相对较小,高速旋转的磁场切割形成的感应磁滞消耗大部分能量。 This is because the titanium material while not, but its resistivity is relatively small, high-speed rotation of the magnetic field induced hysteresis formed by cutting most of the energy consumed. 由于技术层面的原因,在血泵的设计中,至今还没有人考虑采用热解碳代替TC4钛合金制造血泵。 Due to technical reasons, the blood pump design, no one has been considered instead of pyrolytic carbon TC4 titanium alloy pump blood. 如果采用热解碳材料,其电阻率是钛合金的10倍以上,感应磁滞就非常小。 If a pyrolytic carbon material, which is more than 10 times the resistivity of titanium, is very small hysteresis induction. 另外,由于热解碳的模量高,在强度范围内,结构稳定性更好,泵体管壁可做得比钛合金更薄,经过优化可以使总能耗较大幅度地降低到现有任何一款辅助泵水平以下。 Further, since the pyrolytic carbon is high modulus, strength in the range, better structural stability, do pump wall is thinner than the titanium has been optimized so that the total energy consumption significantly reduced compared to the prior any one of the auxiliary pump level. 使用热解碳结构带来的能耗降低,对外围能源系统同样起到降低成本的作用,最直接的效果是电缆更细,电池更轻,便于携带。 Pyrolytic carbon structures brought about reduction in energy consumption, the system also play a peripheral energy cost reduction effect, the effect is the most direct cable thinner, lighter battery, easy to carry.

[0004]目前主流的连续流动循环辅助血泵分为轴流式和离心式两种,其中轴流血泵流道内主要包括前导、叶轮转子、后导。 [0004] The current mainstream of the continuous flow blood pump into the auxiliary circulating axial and centrifugal two, wherein the inner shaft blood pump flow passage including a preamble, an impeller rotor, the rear face guide. 血泵通过叶轮转子旋转对血液做功,叶轮转子的轴支撑于前、后导的轴承上,这样就形成了两个转静交界面——叶轮转子与前导交界面、叶轮转子与后导交界面,血泵的血栓形成主要集中于或诱发于转静交界面,目前还没有能完全消除转静交界面的新型血泵结构,本申请采用将转子叶轮的轴直接安装到管壁上、取消前导叶、将后导叶固定在管壁上(如图1所示)的结构,达到消除两个转静交界面的效果。 By rotation of the rotor impeller blood pump blood work, the turbine rotor shaft is supported in the front, rear guide bearing, thus forming two static forwarding interface - interface preamble turbine rotor, the rotor and the impeller back guide interface , the blood pump thrombosis induced or focused on the interface to the static switch, is not able to completely eliminate the transfected novel blood pump static structure of the interface, the present application uses the shaft of the rotor wheel is mounted directly to the wall, leading to cancel leaves the rear vanes in the wall of the fixed structure (FIG. 1), the effect of eliminating the static interface of the two revolutions.

[0005] 采用热解碳制造血泵存在血液相容性更好、感应磁滞损耗小(效率高)、质量轻、长期使用更耐腐蚀的优势。 [0005] The presence of blood compatibility of pyrolytic carbon producing better blood pump, sensing small hysteresis loss (high efficiency), light weight, long-term use of more corrosion resistant advantages. 结合热解碳的制造工艺特点,采用流入、流出管道与叶轮转子区血流方向形成角度,流道内只有叶轮转子和后导叶两个零件,叶轮转子的轴支撑于血泵壳体轴承上的新型血泵结构,完全消除了血泵内的转静交界面,降低溶血和血栓风险。 Binding characteristics of the manufacturing process of pyrolytic carbon, the use of inflow and outflow pipes blood flow region forms an angle direction of the impeller rotor, the flow path only after the vanes of the impeller and the two rotor parts of the turbine rotor shaft is supported on a bearing housing of the blood pump new blood pump structure, completely eliminating static forwarding interface in the blood pump, reducing the risk of thrombosis and hemolysis.

发明内容 SUMMARY

[0006] 本发明的目的在于提供一种热解碳循环辅助血泵,它用热解碳材料代替传统的钛合金材料,以消除金属物质的感应磁滞效应,从而提高循环辅助泵的输出效率;同时带来加工制造和结构特点上的突破,进一步提高循环辅助泵的综合性能和性价比。 [0006] The object of the present invention is to provide a blood circulation assistance pyrolytic carbon pump, which with pyrolytic carbon material instead of the conventional titanium alloys to eliminate hysteresis effects induced metal species, thereby enhancing the cycle efficiency of the auxiliary pump output ; at the same time bring a breakthrough in manufacturing and structural features to further enhance the circulation of the auxiliary pump overall performance and cost-effective.

[0007] 为实现上述目的,本发明采取以下技术方案: [0007] To achieve the above object, the present invention adopts the following technical scheme:

[0008] 一种热解碳循环辅助血泵,它由热解碳材料制造,它包括有入流弯管(I)、线圈外壳(2)、泵管(4)、后导叶管(5)、后导叶(51)、出流弯管(6)、前转轴(71)、前轴承端盖(8)、转子前段(9)、转子前导叶(91)、转子后段(11)、后转轴(121)、后轴承端盖(13);流道为U形; [0008] A blood circulation assistance pyrocarbon pump, it is manufactured by the pyrolysis of a carbon material, which comprises an inflow bend (the I), the coil case (2), a pump tube (4), the guide vane duct (5) , the vanes (51), the outflow bend (6), a front shaft (71), the front bearing cap (8), the pre-stage rotor (9), the leading blade rotor (91), rear section (11) of the rotor, after the shaft (121), a rear bearing cover (13); U-shaped flow path;

[0009] 该转子前段(9)和转子后段(11)相连接形成转子; [0009] The front section of the rotor (9) and the rear section of the rotor (11) is connected to form the rotor;

[0010] 该入流弯管(I)的血流入口垂直于转子轴线(14),该出流弯管(6)的血流出口垂直于转子轴线,前轴承(7)固定于入流弯管(I)的外侧壁内,后轴承(12)固定于出流弯管 [0010] The elbow inlet (I) an inlet blood flow perpendicular to the rotor axis (14), the blood flow is perpendicular to the outlet elbow (6) to the rotor axis, a front bearing (7) fixed to the inflow bend ( outer sidewall I), the rear bearing (12) fixed to the outflow bend

(6)的外侧壁内。 (6) of the outer wall.

[0011] 前转轴(71) —端插在转子前段(9)的端头内,另一端插在前轴承(7)内,在前轴承(7)的外端设有前轴承端盖(8);后转轴(121) —端插在转子后段(11)的端头内,另一端插在后轴承(12)内,在后轴承(12)的外端设有后轴承端盖(13)。 [0011] The front shaft (71) - the end is inserted in the front section of the rotor (9) of the end, the other end to the front bearing (7), the front bearing (7) provided with a front end of the outer bearing cap (8 ); the shaft (121) - is inserted in the rear end section (11) of the rotor end, and the other end inserted in the rear bearing (12), is provided at the outer end of the rear bearing (12) of the bearing cap (13 ).

[0012] 转子前导叶(91)设在转子的中部,与转子前段(9)的外侧壁连接,在转子前段(9)内设有永久磁体(10),在转子前导叶(91)的外圆周上设有薄壁的泵管(4),该泵管(4) 一端与入流弯管(I)的内侧口连接,另一端与后导叶管(5)的一端连接,该后导叶管(5)的另一端与出流弯管(6)的内侧口连接。 [0012] The preamble of the rotor blade (91) is provided in the middle of the rotor, the rotor is connected to the front stage outer side wall (9), equipped with permanent magnets (10) in the front section of the rotor (9), an outer rotor preamble leaf (91) thin wall is provided on the circumference of the pump tube (4), the pump tube (4) and the inlet end of the elbow (I) connected to the inside of the mouth, and the rear end of the other end of the tube guide vane (5) is connected to the rear vane the other end of the tube (5) and the outflow bend (6) connected to the inside of the mouth.

[0013] 在导叶管(5)的内侧壁连接有后导叶(51)。 [0013] In the side wall guide vane duct (5) is connected to the guide vanes (51).

[0014] 在泵管(4)的外壁上设有驱动线圈(3),该驱动线圈(3)径向与永久磁体(10)相对应。 [0014] A drive coil (3) on the outer wall of the pump tube (4), the driving coil (3) radially and the permanent magnet (10), respectively.

[0015] 在入流弯管(I)的内侧口的转子轴线平行的外端设有入流弯管环槽(101),在出流弯管¢)的内侧口的转子轴线平行的外端设有出流弯管环槽(61),在入流弯管环槽(101)和出流弯管环槽(61)之间套接有线圈外壳(2)。 [0015] elbow ring groove is provided with inlet (101) at the outer end of the inlet elbow rotor axis (I) parallel to the inner side of the mouth, the mouth of the inner rotor axis in the outflow bend ¢) parallel with the outer end of outflow elbow ring groove (61), between the inlet elbow ring groove (101) and outflow elbow ring groove (61) is mounted a coil case (2).

[0016] 本发明采用材料为热解碳,轴承固定于管壁,流入、流出口(与叶轮转子区血流方向形成适合植入部位解剖的角度)垂直于叶轮转子区血流方向,采用消除流道内转静交界面的新型血泵结构。 [0016] The present invention uses a pyrolytic carbon material, fixed to a bearing wall, inflow, outflow port (anatomical site of implantation angle for forming a blood flow direction of the impeller rotor area) perpendicular to the direction of blood flow area of ​​the turbine rotor, to eliminate use of static transfer interface novel blood pump flow path structure.

[0017] 本发明的技术方案是:将血泵临床应用需要配置的弯管整合到泵体的结构上,减少零部件数量,同时,利用弯管侧壁,制造支撑叶轮转子结构的轴承结构。 [0017] aspect of the present invention are: the clinical application needs to be configured elbow blood pump integrated into the pump body structure, reducing the number of parts, while the use of the side walls bend, producing a bearing support structure of the turbine rotor structure. 本血泵的组成部分包括入流弯管(I)、线圈外壳⑵、驱动线圈(3)、泵管(4)、后导叶(51)、出流弯管(6)、前轴承(7)、前轴承端盖(8)、转子前段(9)、永久磁体(10)、转子后段(11)、后轴承(12)、后轴承端盖(13)。 This part of the blood pump includes an inflow bend (the I), the coil case ⑵, the drive coil (3), the pump tube (4), the vanes (51), the outflow bend (6), a front bearing (7) front bearing cap (8), the pre-stage rotor (9), the permanent magnet (10), the rotor section (11), a rear bearing (12), a rear bearing cover (13). 入流弯管(I)与泵管(4)、后导叶(5)、出流弯管(6)采用经过精密加工子母口套接连接在一起,套接接口外部采用生物相容性优良的胶粘剂密封。 Inlet elbow (I) and pump tube (4), the guide vanes (5), the outflow bend (6) using precision machined picture port socket connection together, the external interface socket adhesive excellent biocompatibility seal. 套接口内部保证平滑过渡无台阶。 Sets an internal interface to ensure a smooth transition without steps. 线圈外壳(2)作为主承力部件,卡在入流弯管(I)出流弯管(6)外壁的环槽内,通过粘接等方式,使3个部件成为一体,使泵管(4)、后导叶(5)的壳体不会在使用中承受弯矩。 Coil case (2) as the main load-bearing member, in the card inlet elbow (I) outflow bend (6) of the outer wall of the annular groove, by bonding or the like, so that three components are integrated, so that the pump tube (4 ), the guide vanes (5) of the housing is not subjected to bending moments during use. 装配完成后的线圈外壳(2)内部中空,提高泵在体液环境下的悬浮效果。 A coil housing (2) assembled after hollow interior, the effect of improving the pump suspended in the fluid environment.

[0018] 转子外形采用有益于流体的纺梭型,叶轮转子位于转子中部,正对泵管(4),转子由前轴承(7)转子前段及叶轮转子(9)、永久磁体(10)、转子后段(11)、后轴承(12)组成,均采用经过精密加工子母口套接镶嵌在一起,套接接口内部采用生物相容性优良的高强度胶粘剂连接。 [0018] The rotor spinning shape with a shuttle type, of the fluid turbine rotor beneficial central rotor, facing the pump tube (4), by a front rotor bearing (7) of the rotor and the pre-stage turbine rotor (9), the permanent magnet (10), rear section (11) of the rotor, the bearing (12), with precision machined are used mosaic picture with the socket mouth, inside the socket interface using a high strength adhesive excellent biocompatibility connection. 转子采用薄壁结构,保证必要强度和刚性前提下,内部空心,以减轻重量。 The rotor thin-walled structure, to ensure the strength and rigidity necessary prerequisite, the hollow interior to reduce weight.

[0019] 转子外壳、叶轮转子与泵管(4)后导叶套(5)之间,保持稳定可靠的间隙,以保证血泵流体性能的稳定,并具有低的溶血。 Between [0019] the rotor housing, impeller rotor and the pump tube (4) after the guide vane sets (5), a gap remains stable and reliable, in order to ensure stable performance of fluid blood pump, and has a low hemolysis.

[0020] 驱动线圈(3)套在泵管(4)外壁上,与转子中的永磁体位置对应。 [0020] The driving coil (3) set in the pump tube (4) outer wall, corresponding to the position of the permanent magnet rotor.

[0021] 不同部件根据不同的性能要求,采用不同的性能的热解碳及特定的工艺制造。 [0021] The different components of the different performance requirements, using different properties of pyrolytic carbon and a specific manufacturing process. 其中转子及泵管采用含硅各向同性热解碳制造,实现薄壁并具有高的强度及刚性,同时使驱动线圈(3)与永久磁体(10)间的磁隙减小,提高驱动效率。 Wherein the rotor and the driving efficiency of the pump tube with the silicon-containing isotropic pyrolytic carbon manufacture, and has a thin-wall high strength and rigidity, while the drive coil (3) and the permanent magnet (10) between the magnetic gap is reduced, improving .

[0022] 转子前后轴尖均插入弯管侧壁。 [0022] The front and rear rotors shaft tip insert sidewall bending. 轴承固定在侧壁的轴承座内,由前轴承端盖(8)及后轴承端盖(13)实现轴向定位。 A bearing housing fixed to the bearing side walls, realized by the axial positioning of the front bearing cap (8) and the rear bearing cover (13). 轴承表面不进入血液通道,降低了轴承引起的血栓风险。 Bearing surface does not enter the blood channel, reducing the risk of blood clots caused by the bearing. 轴承部位的材料厚度较大,由摩擦产生的热,大部分被周围材料吸收,并传导到外壁,降低了轴承温升造成血栓及溶血的风险。 Portion of large thickness of the bearing material, heat generated by friction, largely absorbed by the surrounding material, and conducted to the outer wall, the bearing temperature rise to reduce the risk of causing thrombosis and hemolysis. 由于前后轴承的承载不同,前轴承采用径向轴向组合轴承,后轴承采用径向轴承。 Since the front and rear bearings of the different carrier, the front bearing Radial axial bearings, the bearings are radial bearings.

[0023] 本发明的有益效果是: [0023] Advantageous effects of the present invention are:

[0024] 1、由于本发明采用热解碳材料制造,提高了血泵的血液相容性,轴承固定于管壁,流入、流出口垂直于叶轮转子区血流方向,消除了流道内的转静交界面,血流从侧面直接冲刷轴及轴承外表面,即消除了血泵内血栓形成风险最大的区域。 [0024] 1, since the present invention uses a pyrolytic carbon material, to improve the blood compatibility of the blood pump, the bearing is fixed to the wall, the inflow of blood flow direction perpendicular to the flow outlet area of ​​the impeller rotor, eliminating transfer within the flow path static interface, the blood stream directly from the side of the bearing shaft and the outer surface erosion, i.e. the largest area is eliminated the risk of thrombosis within the blood pump.

[0025] 2、前后轴承都固定在流道侧壁上,轴承产生的摩擦热,尤其是前轴承,大部分可以由加厚管壁的热沉吸收并传递到周围组织,减小血液内部分的温升效应,降低由升温引起的血栓风险。 [0025] 2, front and rear bearings are mounted on the flow path side wall, the friction heat generated by the bearing, especially the front bearing, the majority can be absorbed by the heat sink and transmits the thickened wall into the surrounding tissue, reduced blood portion the temperature effect, reducing the risk of blood clots caused by the warming.

[0026] 3、轴承位置和热量传递的变化,使本结构允许前轴承采用更大的直径,而不必如现有直通流道泵,需要将轴承制造的非常纤细。 [0026] 3, the bearing position and changes of the heat transfer, so that this structure allows the use of larger diameter of the front bearing without a pump as in the prior direct flow passage, the bearing needs to be manufactured very thin. 有利于使轴承运行于更加有利的工况,大幅度提高轴承寿命,提高泵结构的稳定性。 Is conducive to the operation of the bearing in a more favorable working conditions, a substantial increase bearing life, improve the stability of the structure of the pump.

[0027] 4、本结构装配后的轴承部位是可见的,有利于制造环节保证装配质量。 [0027] 4, the bearing assembly portion of the present structure is visible, facilitate manufacturing assembly quality assurance aspects.

[0028] 5、本结构泵后导叶与泵壳部件实现一体化制造,改变目前钛合金结构泵,后导叶部件与泵壳压配合的装配方式,减少血栓风险。 [0028] 5, the present structure of the pump vane pump housing member manufacturing integration, titanium change the current structure of the pump, the vane pump housing member press-fit assembly methods, reduces the risk of thrombosis.

[0029] 6、同时由于热解碳材料磁损耗小,泵的能量利用率可以提高,外壳允许适当增厚,对于热量的传导有利,可以起到降低表面温度,并使温度场更均匀的效果。 [0029] 6, pyrolytic carbon due to its little magnetic loss material, can improve the energy efficiency of the pump housing to allow proper thickening, advantageous for the heat conduction, may help reduce the surface temperature, and a more uniform temperature field effect .

[0030] 7、血泵采用热解碳制造,本身重量减轻,在体液环境内的下坠力更小,对周围组织的影响更小。 [0030] 7, the blood pump for producing pyrolytic carbon, weight loss per se, fall within the fluid environment force is smaller, effect on the surrounding tissue less.

附图说明 BRIEF DESCRIPTION

[0031] 图1是本发明的结构示意图。 [0031] FIG. 1 is a structural diagram of the present invention.

[0032] 附图标号:1、入流弯管;2、线圈外壳;3、驱动线圈;4、栗管;5、后导叶管;51、后导叶;6、出流弯管;61、出流弯管环槽;7、前轴承;71、前转轴;8、前轴承端盖;9、转子前段;91、转子前导叶;10、永久磁体;11、转子后段;12、后轴承;121、后转轴;13、后轴承端盖;14、转子轴线101、入流弯管环槽。 [0032] The reference numeral: 1, inlet elbow; 2, the coil case; 3, the driving coil; 4, Li pipe; 5, the guide vane duct; 51, the guide vane; 6, outflow bend; 61, outflow elbow ring groove; 7, the front bearing; 71, before the shaft; 8, the front bearing cap; 9, the preceding rotor; 91, leading blade rotor; 10, permanent magnets; 11, a rotor rear section; 12, a rear bearing ; 121, the rotary shaft; 13, rear bearing cover; 14, a rotor axis 101, inlet elbow ring groove.

具体实施方式 Detailed ways

[0033] 下面结合实施例对本发明做进一步说明,但并不局限于下面所述内容。 [0033] The following embodiments in conjunction with embodiments of the present invention is further illustrated, but is not limited to the following contents.

[0034] 参见图1所示: [0034] Referring to Figure 1:

[0035] 一种热解碳循环辅助血泵,它由热解碳材料制造,它包括有入流弯管1、线圈外壳 [0035] A blood circulation assistance pyrocarbon pump, it is manufactured by the pyrolysis of a carbon material, which comprises an inlet bend, the coil case

2、泵管4、后导叶管5、后导叶51、出流弯管6、前转轴71、前轴承端盖8、转子前段9、转子前导叶91、转子后段11、后转轴121、后轴承端盖13 ; 2, the pump tube 4, the tube guide vane 5, the vanes 51, the outflow bend 6, the front shaft 71, the front bearing cap 8, the preceding rotor 9, rotor blade 91 preamble, the rotor section 11, the rotating shaft 121 after bearing cover 13;

[0036] 该转子前段9和转子后段11相连接形成转子; [0036] The front section 9 of the rotor and the rear rotor section 11 is connected to form the rotor;

[0037] 该入流弯管I的血流入口垂直于转子轴线,该出流弯管6的血流出口垂直于转子轴线,前轴承7固定于入流弯管I的外侧壁内,后轴承12固定于出流弯管6的外侧壁内。 [0037] The inlet blood flow inlet elbow perpendicular to the rotor axis I of the blood outflow outlet elbow is perpendicular to the rotor axis 6, is fixed to the outer wall of the inflow bend I front bearing 7, the bearing 12 is fixed to flow in the outer wall 6 of the elbow.

[0038] 前转轴71 一端插在转子前段9的端头内,另一端插在前轴承7内,在前轴承7的外端设有前轴承端盖8 ;后转轴121 —端插在转子后段11的端头内,另一端插在后轴承12内,在后轴承12的外端设有后轴承端盖13。 Inserted in the rear end of the rotor - the rotating shaft 121; [0038] The front end of the rotary shaft 71 is inserted in the end of the pre-stage rotor head 9, the other end of the front bearing 7 is inserted, the outer end of the front bearing 7 is provided with a front bearing cap 8 the tip section 11, and the other end inserted in the rear bearing 12, the rear bearing 12 in the outer end of the bearing cap 13 is provided.

[0039] 转子前导叶91设在转子的中部,与转子前段9的外侧壁连接,在转子前段9内设有永久磁体10,在转子前导叶91的外圆周上设有薄壁的泵管4,该泵管4 一端与入流弯管I的内侧口连接,另一端与后导叶管5的一端连接,该后导叶管5的另一端与出流弯管6的内侧口连接。 [0039] The rotor blade 91 is provided in the middle of the preamble of the rotor, the rotor and the outer wall 9 is connected to the pre-stage, a permanent magnet 10 in the front section 9 of the rotor equipped with the thin wall on the outer periphery of the rotor 91 leaves the preamble of the pump tube 4 , the pump tube 4 has one end connected to the inner inlet port I of the elbow, and the rear end of the other end of the pipe 5 is connected to the guide vane, the rear end of the other guide vane duct 5 and the outflow port 6 is connected to the inside of the elbow.

[0040] 在导叶管5的内侧壁连接有后导叶51。 [0040] The guide vane duct in the side wall 5 is connected to the vanes 51.

[0041] 在泵管4的外壁上设有驱动线圈3,该驱动线圈3径向与永久磁体10相对应。 [0041] The driving coil 3 is provided on the outer wall of the pump tube 4, the driving coil 3 and the permanent magnet 10 radially corresponds.

[0042] 在入流弯管I的内侧口的转子轴线平行的外端设有入流弯管环槽101,在出流弯管6的内侧口的转子轴线平行的外端设有出流弯管环槽61,在入流弯管环槽101和出流弯管环槽61之间套接有线圈外壳2。 [0042] The annular groove 101 is provided at the inlet elbow outer end of the rotor axis the inner elbow inflow opening I in parallel with the flow out of the elbow at the end of the rotor ring parallel to the axis 6 of the flow inside the elbow opening groove 61, annular groove 101 in the inlet elbow and the elbow flow sleeved ring groove 61 between the coil case 2.

[0043] 本发明提供一种微型轴向血流方向的血泵,泵体的结构材料采用生物相容性优良的热解碳材料制造。 [0043] The present invention provides a miniature axial direction of blood flow blood pump, the pump body structural material excellent biocompatibility using pyrolytic carbon material. 结合热解碳的特性及制造工艺特点,并考虑在临床应用中与人体解剖相适应的需要。 Binding properties and manufacturing process characteristics of pyrolytic carbon, and need to be considered in the clinical application of human anatomy and adapted. 将血流通道所必须的弯管以一体化制造的方式结合到泵体上,并利用结构的特点,将转子的轴承移出血流通道中心,放在弯管侧壁上,减少血流通道内零部件的数量,减少对血流流动的阻碍同时,减少了发生血栓和溶血的几率。 The blood flow passageway necessary to bend in an integrated manner to the pump body for producing a bound, and use of the characteristics of the structure, the bearing of the rotor out of the center of the blood flow passage, the side wall in a bend, reducing the blood flow passageway the number of parts, reducing obstacles to the flow of blood, while reducing the chance of thrombosis and hemolysis.

[0044] 本实施例由组成部分包括入流弯管1、线圈外壳2、驱动线圈3、泵管4、后导叶套5、出流弯管6、前轴承7、前轴承端盖8、转子前段9、永久磁体10、转子后段11、后轴承12、后轴承端盖13。 [0044] Examples of components of the present embodiment comprises an inlet bend, the coil case 2, a driving coil 3, the pump tube 4, the guide vane sets 5, 6 the outflow bend, the front bearing 7, 8 cover the front bearing, a rotor front section 9, the permanent magnet 10, the rotor section 11, the rear bearing 12, the bearing cap 13. 入流弯管I与泵管4、后导叶5、出流弯管6采用经过精密加工子母口套接连接在一起,套接接口外部采用生物相容性优良的胶粘剂密封。 I elbow pipe with the pump inlet 4, the vanes 5, 6 an elbow stream picture using precision machined socket port connected together, using the external interface socket excellent biocompatibility adhesive seal. 套接口内部保证平滑过渡无台阶。 Sets an internal interface to ensure a smooth transition without steps. 线圈外壳2作为主承力部件,卡在入流弯管1、出流弯管6外壁的环槽内,通过粘接等方式,使3个部件成为一体,使泵管4、后导叶5的壳体不会在使用中承受弯矩。 Coil case 2 as the main load-bearing member, a card inlet elbow, annular groove 6 of the outer wall of the outflow bend, by bonding or the like, so that three components are integrated, the pump tube 4, the vanes 5 housing is not subjected to bending moments during use. 装配完成后的线圈外壳2内部中空,提高泵在体液环境下的悬浮效果。 After completion of assembly of the coil hollow interior of the housing 2, the effect of improving the pump suspended in the fluid environment.

[0045] 转子外形采用有益于流体的纺梭型,叶轮转子位于转子中部,正对泵管4,转子由前轴承7转子前段9、永久磁体10、转子后段11、后轴承12组成,均采用经过精密加工子母口套接镶嵌在一起,套接接口内部采用生物相容性优良的高强度胶粘剂连接。 [0045] The rotor spinning shape with a beneficial fluid shuttle type, turbine rotor located in the middle of the rotor, the pump tube 4 is on the rotor front bearing 7 from the pre-stage rotor 9, the permanent magnet 10, the rotor section 11, composed of the rear bearing 12, each using precision machined mosaic picture with the socket mouth, inside the socket interface using a high strength adhesive excellent biocompatibility connection. 转子采用薄壁结构,保证必要强度和刚性前提下,内部空心,以减轻重量。 The rotor thin-walled structure, to ensure the strength and rigidity necessary prerequisite, the hollow interior to reduce weight.

[0046] 转子与泵管4、后导叶51之间,保持稳定可靠的间隙,以保证血泵流体性能的稳定,并具有低的溶血。 [0046] The rotor and the pump tube 4, between the rear vanes 51, remains stable and reliable gap, to ensure stable performance of fluid blood pump, and has a low hemolysis.

[0047] 驱动线圈3套在泵管4外壁上,与转子中的永磁体位置对应。 [0047] 3 sets of the drive coils in an outer wall of the pump tube 4, corresponding to the position of the permanent magnet rotor.

[0048] 不同部件根据不同的性能要求,采用不同的性能的热解碳及特定的工艺制造。 [0048] The different components of the different performance requirements, using different properties of pyrolytic carbon and a specific manufacturing process. 其中转子及泵管采用含硅各向同性热解碳制造,实现薄壁并具有高的强度及刚性,同时使驱动线圈3与永久磁体10间的磁隙减小,提高驱动效率。 Wherein the rotor and the pump tube with the silicon-containing isotropic pyrolytic carbon manufacture, and has a thin-wall high strength and rigidity, while the driving coil 3 and the permanent magnet magnetic gap 10 is reduced to improve the driving efficiency.

[0049] 转子前后轴尖均插入弯管侧壁。 [0049] The front and rear rotors shaft tip insert sidewall bending. 轴承固定在侧壁的轴承座内,由前轴承端盖8及后轴承端盖13实现轴向定位。 A bearing housing fixed to the bearing side walls, realized by the front axial positioning bearing cap 8 and the rear bearing cover 13. 轴承表面不进入血液通道,降低了轴承引起的血栓风险。 Bearing surface does not enter the blood channel, reducing the risk of blood clots caused by the bearing. 轴承部位的材料厚度较大,由摩擦产生的热,大部分被周围材料吸收,并传导到外壁,降低了轴承温升造成血栓及溶血的风险。 Portion of large thickness of the bearing material, heat generated by friction, largely absorbed by the surrounding material, and conducted to the outer wall, the bearing temperature rise to reduce the risk of causing thrombosis and hemolysis. 由于前后轴承的承载不同,前轴承采用径向轴向组合轴承,后轴承采用径向轴承。 Since the front and rear bearings of the different carrier, the front bearing Radial axial bearings, the bearings are radial bearings.

[0050] 本实施例的血泵,采用带基体的热解碳工艺。 [0050] The blood pump according to the present embodiment, using the process with pyrolytic carbon matrix. 制造方法是首先采用性能可以匹配的高强度石墨或碳纤维增强的碳材料制造基体,然后通过适当的碳沉积工艺,在基体表面沉积一定厚度,微观组织均匀致密的热解碳涂层,经过对表面的精密加工和抛光,完成零部件的制造。 Manufacturing method is first used performance can be matched, high strength graphite or carbon fiber reinforced carbon material matrix is ​​then deposited a thickness, a uniform dense pyrolytic carbon coating microstructure in the surface of the substrate by a suitable carbon deposition process, after the surface precision machining and polishing to complete the manufacture of parts and components.

[0051] 后导叶套5的制造是本实施例中难度最大的零件,采用悬臂结构,后导叶套5与泵管4连接环的结合长度,可以满足强度需求,后导叶51的其余长度以悬臂伸出。 Manufacturing the guide vane sets after 5 [0051] This embodiment is the most difficult part in the embodiment, cantilever structure, the combined length of the guide vane sets 5 and the pump tube 4 connected to the ring, to meet strength requirements, the rest of the vanes 51 projecting in a cantilever length. 这种开放性的结构利于热解碳的沉积质量。 This open structure facilitates mass pyrolytically deposited carbon. 后导叶套5装配时同时与转子和通道内壁保持均匀的间隙。 After the guide while maintaining a uniform gap with the inner wall of the channel and the sleeve 5 when the rotor blade assembly. 实现一体化制造是采用热解碳制造泵体的一个技术特色,通过本方案的实施,消除了采用钛合金等金属制造,导叶与泵管压配合不可避免形成的尖角、微缝隙及死流区,减小血栓的风险。 Manufacturing integration technology is the use of a pump characteristic of pyrolytic carbon manufactured by the embodiment of the present embodiment eliminates the sharp corners of metal such as titanium alloy manufacture, guide vane and the pump tube formed by the press-fit unavoidable, and micro slits dead stream area, reducing the risk of thrombosis.

[0052] 本实施例的一个特点是前后轴承均是直视可见的,有利于装配时精密调整,同时有利于使用前检查泵的状态。 A characteristic [0052] The present embodiment is a direct-view front and rear bearings are visible, fine-tuning can facilitate assembly while facilitating a state before use to check the pump.

[0053] 本实施例,入流弯管I出流弯管6与转子的轴线垂直,并不局限于这种形式。 [0053] The embodiment of the present embodiment, the I stream inflow elbow bend 6 perpendicular to the rotor axis, is not limited to this form. 应用于不同的使用状态和植入部位,以及不同的构建循环通道的方式,入流弯管1、出流弯管6与转子的轴线间的角度随需要进行调整,同时入流弯管1、出流弯管6空间的角度关系,也需要随人体解剖特征进行设定。 Use state and applied to different parts of the implant, and the manner of constructing the different circulation channels, an inlet elbow, the elbow 6 and the flow angle between the axis of the rotor is adjusted as needed, while the inflow bend 1, the flow 6 angular relationship elbow space, but also need to be set with the human anatomical features. 但上述变化的原则是不能破坏轴承的可视性,如果破坏了可视性,本技术方案的制造难度大增。 But the principle is that these changes can not be destroyed bearings visibility, visibility if destroyed, the difficulty of making this technology programs has increased significantly.

[0054] 以上所述是本发明的较佳实施例及其所运用的技术原理,对于本领域的技术人员来说,在不背离本发明的精神和范围的情况下,任何基于本发明技术方案基础上的等效变换、简单替换等显而易见的改变,均属于本发明保护范围之内。 [0054] The above embodiments are preferred embodiments and the use of the technical principles of the present invention, those skilled in the art, without departing from the spirit and scope of the present invention, based on any aspect of the present invention apparent change on the basis of equivalent transformation, simple replacement, etc., fall within the scope of the present invention.

Claims (6)

1.一种热解碳循环辅助血泵,其特征在于:它由热解碳材料制造,它包括有入流弯管(I)、线圈外壳(2)、泵管(4)、后导叶管(5)、后导叶(51)、出流弯管(6)、前转轴(71)、前轴承端盖(8)、转子前段(9)、转子前导叶(91)、转子后段(11)、后转轴(121)、后轴承端盖(13);流道为U形; 该转子前段(9)和转子后段(11)相连接形成转子; 该入流弯管(I)的血流入口垂直于转子轴线(14),该出流弯管(6)的血流出口垂直于转子轴线,前轴承(7)固定于入流弯管(I)的外侧壁内,后轴承(12)固定于出流弯管(6)的外侧壁内。 A blood circulation assistance pyrolytic carbon pump, characterized in that: it is manufactured by the pyrolysis of a carbon material, which comprises an inflow bend (the I), the coil case (2), a pump tube (4), the guide vane duct (5), the vanes (51), the outflow bend (6), a front shaft (71), the front bearing cap (8), the pre-stage rotor (9), the leading blade rotor (91), the rotor section ( 11), the shaft (121), a rear bearing cover (13); U-shaped flow path; front section of the rotor (9) and a rear section (11) forming a rotor connected to the rotor; the inlet elbow (I) in blood inlet perpendicular to the rotor axis (14), the outflow bend (6) perpendicular to the blood flow outlet of the rotor axis, a front bearing (7) is fixed to the outer side wall inlet elbow (I), the rear bearing (12) an outer wall fixed to the inner flow bend (6).
2.根据权利要求1所述的热解碳循环辅助血泵,其特征在于:前转轴(71) —端插在转子前段(9)的端头内,另一端插在前轴承(7)内,在前轴承(7)的外端设有前轴承端盖(8);后转轴(121) —端插在转子后段(11)的端头内,另一端插在后轴承(12)内,在后轴承(12)的外端设有后轴承端盖(13)。 The pyrolytic carbon circulation assisting blood pump according to claim 1, wherein: the front shaft (71) - the end is inserted in the front section of the rotor (9) of the tip, and the other end is inserted first bearing (7) the front bearing (7) provided with a front end of the outer bearing cap (8); the shaft (121) - after the end section is inserted in the rotor (11) of the tip, and the other end is inserted in the rear bearing (12) , it is provided at the outer end of the rear bearing (12) of the bearing shield (13).
3.根据权利要求2所述的热解碳循环辅助血泵,其特征在于:转子前导叶(91)设在转子的中部,与转子前段(9)的外侧壁连接,在转子前段(9)内设有永久磁体(10),在转子前导叶(91)的外圆周上设有薄壁的泵管(4),该泵管(4) 一端与入流弯管⑴的内侧口连接,另一端与后导叶管(5)的一端连接,该后导叶管(5)的另一端与出流弯管(6)的内侧口连接。 The blood circulation assisting pyrolytic carbon pump according to claim 2, wherein: the central outer wall, the rotor front section (9) of the leading blade rotor (91) provided on a rotor connected to the rotor in the front section (9) equipped with permanent magnets (10), provided with thin-walled tubing (4) leading the rotor blade (91) on the outer circumference of the pump tube (4) and the inner end of the inflow port ⑴ the elbow, and the other end one end connected to the tube guide vane (5), the other end of the tube guide vane (5) and the outflow bend (6) connected to the inside of the mouth.
4.根据权利要求3所述的热解碳循环辅助血泵,其特征在于:在导叶管(5)的内侧壁连接有后导叶(51)。 4. The pyrolytic carbon circulation assisting blood pump according to claim 3, wherein: connecting a rear guide vanes (51) in the tube guide vane side wall (5).
5.根据权利要求4所述的热解碳循环辅助血泵,其特征在于:在泵管(4)的外壁上设有驱动线圈(3),该驱动线圈(3)径向与永久磁体(10)相对应。 The pyrolytic carbon circulatory assist blood pump according to claim 4, wherein: a drive coil (3) on the outer wall of the pump tube (4), the driving coil (3) radially and the permanent magnet ( 10), respectively.
6.根据权利要求5所述的热解碳循环辅助血泵,其特征在于:在入流弯管(I)的内侧口的转子轴线平行的外端设有入流弯管环槽(101),在出流弯管(6)的内侧口的转子轴线平行的外端设有出流弯管环槽(61),在入流弯管环槽(101)和出流弯管环槽¢1)之间套接有线圈外壳(2)。 The pyrolytic carbon circulatory assist blood pump according to claim 5, wherein: a ring groove is provided with inlet elbow (101) at the outer end of the inlet elbow rotor axis (I) parallel to the inner side of the mouth, in the outer end of the rotor parallel to the axis of the outflow bend (6) is provided inside the outflow port elbow ring groove (61), the inlet elbow ring groove (101) and an annular groove ¢ flow elbow. 1) between mounted a coil housing (2).
CN 201410539856 2014-10-14 2014-10-14 Pyrolytic carbon cycling auxiliary blood pump CN104225697A (en)

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