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 CN201410539856.6A CN201410539856A CN104225697A CN 104225697 A CN104225697 A CN 104225697A CN 201410539856 A CN201410539856 A CN 201410539856A CN 104225697 A CN104225697 A CN 104225697A
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CN
China
Prior art keywords
rotor
bend pipe
bearing
guide vane
pyrocarbon
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Pending
Application number
CN201410539856.6A
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Chinese (zh)
Inventor
周建业
胡盛寿
胡春雷
柳光茂
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Fuwai Hospital of CAMS and PUMC
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Fuwai Hospital of CAMS and PUMC
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Application filed by Fuwai Hospital of CAMS and PUMC filed Critical Fuwai Hospital of CAMS and PUMC
Priority to CN201410539856.6A priority Critical patent/CN104225697A/en
Publication of CN104225697A publication Critical patent/CN104225697A/en
Pending legal-status Critical Current

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    • 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

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)

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

RESEARCH OF PYROCARBON circulatory assit blood pump
Technical field
The present invention relates to Medical Instruments technical field, it is a kind of RESEARCH OF PYROCARBON circulatory assit blood pump, it by good biocompatibility, the RESEARCH OF PYROCARBON material manufacture of not responding to hysteresis effect, runner is the auxiliary blood pump of U-shaped (band bend pipe), adopt this kind of material and structure can improve delivery efficiency significantly, reduce thrombosis risk simultaneously.
Background technology
After heart failure causes the pump blood reduced capability of heart, the life that circulatory assit blood pump can extend patient is installed.Circulatory assit blood pump can compensate or alternative cardiac function, reduce preload and the acting of heart, restore peace weighing apparatus myocardial metabolism and nutrition, be conducive to recovering cardiac function, assist circulation blood pump has huge application potential in transition Supporting Therapy, heart failure, cardio-pulmonary resuscitation before cardiogenic shock treatment, heart transplantation.
Current auxiliary blood pump major part manufactures by TC4 titanium alloy, although TC4 biocompatibility is better, there is the problem that induction magnetic hystersis loss is large, quality is large, manufacturing cost is high, life-time service may corrode.Though this is because titanium alloy is not magnetic material, but its resistivity is relatively little, the induction magnetic hysteresis that the magnetic field intercepts of high speed rotating is formed consumes most of energy.Due to technological layer, in the design of blood pump, also nobody considers to adopt RESEARCH OF PYROCARBON to replace TC4 titanium alloys hemopoietic pump so far.If adopt RESEARCH OF PYROCARBON material, its resistivity is more than 10 times of titanium alloy, and induction magnetic hysteresis is just very little.In addition, because the modulus of RESEARCH OF PYROCARBON is high, in strength range, structural stability is better, and pump housing tube wall can do thinner than titanium alloy, total energy consumption can be made to be reduced to existing any a donkey pump greatly below horizontal through optimization.The energy consumption using RESEARCH OF PYROCARBON structure to bring reduces, and peripheral energy resource system is played equally to the effect reduced costs, and the most direct effect is that cable is thinner, and battery is lighter, is easy to carry.
The continuous-flow circulatory assit blood pump of current main flow is divided into axial-flow type and centrifugal two kinds, wherein mainly comprise in axial flow blood pump runner leading, vane rotor, after lead.Blood pump is rotated by vane rotor and does work to blood, before the axle of vane rotor is supported in, after on the bearing of leading, material is thus formed two and turn quiet interface---vane rotor and leading interface, vane rotor with after lead interface, the thrombosis of blood pump mainly concentrates on or brings out in turning quiet interface, also do not have at present to eliminate the novel Blood pump structure turning quiet interface completely, the application adopts and is directly installed on tube wall by the axle of impeller of rotor, cancel pilot blade, rear guide vane is fixed on the structure of (as shown in Figure 1) on tube wall, reach the effect that elimination two turns quiet interface.
Blood compatibility is better, induction magnetic hystersis loss little (efficiency is high), quality are light, the more corrosion resistant advantage of life-time service to adopt RESEARCH OF PYROCARBON manufacture blood pump to exist.In conjunction with the manufacturing technical feature of RESEARCH OF PYROCARBON, adopt inflow, outflow conduit and vane rotor district blood flow direction angulation, vane rotor and rear guide vane two parts are only had in runner, the axle of vane rotor is supported in the novel Blood pump structure on blood pump housing bearing, completely eliminate turn quiet interface in blood pump, reduce haemolysis and thrombotic risk.
Summary of the invention
The object of the present invention is to provide a kind of RESEARCH OF PYROCARBON circulatory assit blood pump, it replaces traditional titanium alloy material with RESEARCH OF PYROCARBON material, to eliminate the induction hysteresis effect of metallics, thus improves the delivery efficiency of circulatory assit pump; Bring the breakthrough in processing and manufacturing and construction features simultaneously, improve combination property and the cost performance of circulatory assit pump further.
For achieving the above object, the present invention takes following technical scheme:
A kind of RESEARCH OF PYROCARBON circulatory assit blood pump, it is manufactured by RESEARCH OF PYROCARBON material, and it includes the bend pipe that becomes a mandarin (1), coil case (2), pump line (4), rear guide vane pipe (5), rear guide vane (51), goes out to flow bend pipe (6), front rotary shaft (71), fore bearing end cap (8), rotor leading portion (9), rotor pilot blade (91), rotor back segment (11), rear rotating shaft (121), rear bearing end cap (13); Runner is U-shaped;
This rotor leading portion (9) is connected with rotor back segment (11) formation rotor;
The blood flow entrance of this bend pipe that becomes a mandarin (1) is perpendicular to rotor axis (14), this blood stream outlet going out to flow bend pipe (6) is perpendicular to rotor axis, fore bearing (7) is fixed in the lateral wall of the bend pipe that becomes a mandarin (1), and rear bearing (12) is fixed in the lateral wall of stream bend pipe (6).
Front rotary shaft (71) one end is inserted in the termination of rotor leading portion (9), and the other end is inserted in fore bearing (7), is provided with fore bearing end cap (8) in the outer end of fore bearing (7); Rear rotating shaft (121) one end is inserted in the termination of rotor back segment (11), and the other end is inserted in rear bearing (12), is provided with rear bearing end cap (13) in the outer end of rear bearing (12).
Rotor pilot blade (91) is located at the middle part of rotor, be connected with the lateral wall of rotor leading portion (9), permanent magnet (10) is provided with in rotor leading portion (9), the excircle of rotor pilot blade (91) is provided with the pump line (4) of thin-walled, this pump line (4) one end is connected with the inner side mouth of the bend pipe that becomes a mandarin (1), the other end is connected with the one end of rear guide vane pipe (5), and the other end of this rear guide vane pipe (5) is connected with the inner side mouth going out to flow bend pipe (6).
Rear guide vane (51) is connected with in the medial wall of stator pipe (5).
The outer wall of pump line (4) is provided with drive coil (3), and this drive coil (3) is radial corresponding with permanent magnet (10).
The bend pipe annular groove (101) that becomes a mandarin is provided with in the outer end that the rotor axis of the inner side mouth of the bend pipe that becomes a mandarin (1) is parallel, be provided with out stream bend pipe annular groove (61) in the outer end that the rotor axis of the inner side mouth going out to flow bend pipe (6) is parallel, become a mandarin bend pipe annular groove (101) and go out to flow between bend pipe annular groove (61) and be socketed with coil case (2).
The present invention adopts material to be RESEARCH OF PYROCARBON, bearing is fixed on tube wall, flow into, flow export (forming the angle that applicable implant site dissects with vane rotor district blood flow direction) perpendicular to vane rotor district blood flow direction, adopt the novel Blood pump structure eliminating turn quiet interface in runner.
Technical scheme of the present invention is: need the bend pipe of configuration to be incorporated in the structure of the pump housing blood pump clinical practice, reduce amount of parts, meanwhile, utilize elbow sidewall, manufacture the bearing arrangement supporting vane rotor structure.The ingredient of this blood pump comprises the bend pipe that becomes a mandarin (1), coil case (2), drive coil (3), pump line (4), rear guide vane (51), goes out to flow bend pipe (6), fore bearing (7), fore bearing end cap (8), rotor leading portion (9), permanent magnet (10), rotor back segment (11), rear bearing (12), rear bearing end cap (13).Become a mandarin bend pipe (1) and pump line (4), rear guide vane (5), go out to flow bend pipe (6) and adopt be socketed through Precision Machining mother-son mouth and link together, the excellent adhesive of socket interface outside employing biocompatibility seals.Socket inside ensuring seamlessly transits without step.Coil case (2) is as primary load bearing parts, being stuck in the bend pipe that becomes a mandarin (1) goes out to flow in the annular groove of bend pipe (6) outer wall, by the mode such as bonding, make 3 parts become to be integrated, make pump line (4), the housing of rear guide vane (5) in use can not bear moment of flexure.Coil case (2) inner hollow after having assembled, improves the suspension effect of pump under fluid environment.
Rotor profile adopt be of value to fluid spin shuttle-type, vane rotor is positioned in the middle part of rotor, faces toward pump pipe (4), rotor is made up of fore bearing (7) rotor leading portion and vane rotor (9), permanent magnet (10), rotor back segment (11), rear bearing (12), all adopt and be embedded in together through the socket of Precision Machining mother-son mouth, the high-strength adhesive that socket interface inside adopts biocompatibility excellent connects.Rotor adopts thin-wall construction, and under ensureing necessary intensity and rigidity prerequisite, boring, with weight reduction.
Rotor case, between vane rotor and pump line (4) rear guide vane cover (5), keep reliable and stable gap, to ensure the stable of blood pump fluid property, and there is low haemolysis.
Drive coil (3) is enclosed within pump line (4) outer wall, corresponding with the permanent magnet position in rotor.
Different parts, according to different performance requirements, adopt the RESEARCH OF PYROCARBON of different performances and specific manufacture technics.Its rotor and pump line adopt siliceous isotropic pyrolytic carbon manufacture, realize thin-walled and have high intensity and rigidity, make the magnetic gap between drive coil (3) and permanent magnet (10) reduce simultaneously, improve drive efficiency.
Before and after rotor, pivot all inserts elbow sidewall.Bearing is fixed in the bearing block of sidewall, realizes axial location by fore bearing end cap (8) and rear bearing end cap (13).Bearing surface does not enter blood channel, reduces the thrombotic risk that bearing causes.The material thickness of bearing portion is comparatively large, and by fricative heat, major part is absorbed by adjacent material, and is transmitted to outer wall, reduces the risk that bearing temperature rise causes thrombosis and haemolysis.Because the carrying of front and back bearings is different, fore bearing adopts radial-axial combination bearing, and rear bearing adopts journal bearing.
The invention has the beneficial effects as follows:
1, because the present invention adopts the manufacture of RESEARCH OF PYROCARBON material, improve the blood compatibility of blood pump, bearing is fixed on tube wall, inflow, flow export are perpendicular to vane rotor district blood flow direction, eliminate turn quiet interface in runner, blood flow directly washes away axle and bearing outside surface from the side, namely eliminates the region that in blood pump, thrombosis risk is maximum.
2, front and back bearings is all fixed on runner sidewall, the frictional heat that bearing produces, especially fore bearing, and major part can be delivered to surrounding tissue by the heat sink absorption thickening tube wall, reduces the temperature-rise effect of part in blood, reduces by the thrombotic risk caused that heats up.
3, position of bearings and the heat change of transmitting, makes this structure allow fore bearing to adopt larger diameter, and need not as existing straight-through runner pump, and what need bearing mnanufacture is very very thin.Be conducive to making bearing to run on operating mode advantageously, increase substantially bearing life, improve the stability of pump configuration.
4, the bearing portion after this Standard is visible, is conducive to manufacturing link and ensures assembly quality.
5, this structure pump rear guide vane and pump case parts realize integrated manufacture, change current titanium alloy structure pump, the assembling mode of rear guide vane parts and pump case press-fit, reduce thrombotic risk.
6, simultaneously because RESEARCH OF PYROCARBON material magnetic loss is little, the capacity usage ratio of pump can improve, and shell allows suitably to thicken, and the conduction for heat is favourable, can play reduction surface temperature, and make temperature field evenly effect.
7, blood pump adopts RESEARCH OF PYROCARBON manufacture, and weight saving own, the bearing down in fluid environment is less, less on the impact of surrounding tissue.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Drawing reference numeral: 1, become a mandarin bend pipe; 2, coil case; 3, drive coil; 4, pump line; 5, rear guide vane pipe; 51, rear guide vane; 6, go out to flow bend pipe; 61, go out to flow bend pipe annular groove; 7, fore bearing; 71, front rotary shaft; 8, fore bearing end cap; 9, rotor leading portion; 91, rotor pilot blade; 10, permanent magnet; 11, rotor back segment; 12, rear bearing; 121, rear rotating shaft; 13, rear bearing end cap; 14, rotor axis 101, become a mandarin bend pipe annular groove.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, but be not limited to described content below.
Shown in Figure 1:
A kind of RESEARCH OF PYROCARBON circulatory assit blood pump, it is manufactured by RESEARCH OF PYROCARBON material, and it includes the bend pipe 1 that becomes a mandarin, coil case 2, pump line 4, rear guide vane pipe 5, rear guide vane 51, goes out to flow bend pipe 6, front rotary shaft 71, fore bearing end cap 8, rotor leading portion 9, rotor pilot blade 91, rotor back segment 11, rear rotating shaft 121, rear bearing end cap 13;
This rotor leading portion 9 is connected with rotor back segment 11 formation rotor;
The blood flow entrance of this bend pipe 1 that becomes a mandarin is perpendicular to rotor axis, and this blood stream outlet going out to flow bend pipe 6 is perpendicular to rotor axis, and fore bearing 7 is fixed on and becomes a mandarin in the lateral wall of bend pipe 1, and rear bearing 12 is fixed in the lateral wall of stream bend pipe 6.
Front rotary shaft 71 one end is inserted in the termination of rotor leading portion 9, and the other end is inserted in fore bearing 7, is provided with fore bearing end cap 8 in the outer end of fore bearing 7; Rear rotating shaft 121 one end is inserted in the termination of rotor back segment 11, and the other end is inserted in rear bearing 12, is provided with rear bearing end cap 13 in the outer end of rear bearing 12.
Rotor pilot blade 91 is located at the middle part of rotor, be connected with the lateral wall of rotor leading portion 9, permanent magnet 10 is provided with in rotor leading portion 9, the excircle of rotor pilot blade 91 is provided with the pump line 4 of thin-walled, this pump line 4 one end is connected with the inner side mouth of the bend pipe 1 that becomes a mandarin, the other end is connected with one end of rear guide vane pipe 5, and the other end of this rear guide vane pipe 5 is connected with the inner side mouth going out to flow bend pipe 6.
Rear guide vane 51 is connected with in the medial wall of stator pipe 5.
The outer wall of pump line 4 is provided with drive coil 3, and this drive coil 3 is radial corresponding with permanent magnet 10.
The outer end parallel at the rotor axis of the inner side mouth of the bend pipe 1 that becomes a mandarin is provided with the bend pipe annular groove 101 that becomes a mandarin, be provided with out stream bend pipe annular groove 61 in the outer end that the rotor axis of the inner side mouth going out to flow bend pipe 6 is parallel, become a mandarin bend pipe annular groove 101 and go out to flow between bend pipe annular groove 61 and be socketed with coil case 2.
The invention provides the blood pump of a kind of Minisize axial to blood flow direction, the RESEARCH OF PYROCARBON material that the structural material of the pump housing adopts biocompatibility excellent manufactures.In conjunction with characteristic and the manufacturing technical feature of RESEARCH OF PYROCARBON, and the needs that consideration adapts with human dissection in clinical practice.Necessary for channel of blood flow bend pipe is attached on the pump housing in the mode of integration manufacture, and utilize the feature of structure, the bearing of rotor is shifted out channel of blood flow center, be placed on elbow sidewall, reduce the quantity of parts in channel of blood flow, the while of reducing the obstruction to blood flow flowing, decrease the probability that thrombosis and haemolysis occur.
The present embodiment is comprised the bend pipe 1 that becomes a mandarin, coil case 2, drive coil 3, pump line 4, rear guide vane cover 5 by ingredient, is gone out to flow bend pipe 6, fore bearing 7, fore bearing end cap 8, rotor leading portion 9, permanent magnet 10, rotor back segment 11, rear bearing 12, rear bearing end cap 13.Become a mandarin bend pipe 1 and pump line 4, rear guide vane 5, go out to flow bend pipe 6 and adopt be socketed through Precision Machining mother-son mouth and link together, the adhesive that socket interface outside adopts biocompatibility excellent seals.Socket inside ensuring seamlessly transits without step.Coil case 2, as primary load bearing parts, is stuck in the bend pipe 1 that becomes a mandarin, goes out to flow in the annular groove of bend pipe 6 outer wall, by the mode such as bonding, makes 3 parts become to be integrated, makes pump line 4, the housing of rear guide vane 5 in use can not bear moment of flexure.Coil case 2 inner hollow after having assembled, improves the suspension effect of pump under fluid environment.
Rotor profile adopt be of value to fluid spin shuttle-type, vane rotor is positioned in the middle part of rotor, faces toward pump pipe 4, rotor is made up of fore bearing 7 rotor leading portion 9, permanent magnet 10, rotor back segment 11, rear bearing 12, all adopt and be embedded in together through the socket of Precision Machining mother-son mouth, the high-strength adhesive that socket interface inside adopts biocompatibility excellent connects.Rotor adopts thin-wall construction, and under ensureing necessary intensity and rigidity prerequisite, boring, with weight reduction.
Between rotor and pump line 4, rear guide vane 51, keep reliable and stable gap, to ensure the stable of blood pump fluid property, and there is low haemolysis.
Drive coil 3 is enclosed within pump line 4 outer wall, corresponding with the permanent magnet position in rotor.
Different parts, according to different performance requirements, adopt the RESEARCH OF PYROCARBON of different performances and specific manufacture technics.Its rotor and pump line adopt siliceous isotropic pyrolytic carbon manufacture, realize thin-walled and have high intensity and rigidity, make the magnetic gap between drive coil 3 and permanent magnet 10 reduce simultaneously, improve drive efficiency.
Before and after rotor, pivot all inserts elbow sidewall.Bearing is fixed in the bearing block of sidewall, realizes axial location by fore bearing end cap 8 and rear bearing end cap 13.Bearing surface does not enter blood channel, reduces the thrombotic risk that bearing causes.The material thickness of bearing portion is comparatively large, and by fricative heat, major part is absorbed by adjacent material, and is transmitted to outer wall, reduces the risk that bearing temperature rise causes thrombosis and haemolysis.Because the carrying of front and back bearings is different, fore bearing adopts radial-axial combination bearing, and rear bearing adopts journal bearing.
The blood pump of the present embodiment, adopts the RESEARCH OF PYROCARBON technique of ribbon matrix.Manufacture method is the high strength graphite or carbon fiber reinforced material with carbon element manufacture matrix that first adopt performance to mate, then by suitable carbon laydown technique, at matrix surface deposition certain thickness, the pyrocarbon coating of microstructure even compact, through Precision Machining and the polishing of effects on surface, complete the manufacture of parts.
Rear guide vane cover 5 manufacture be the part that in the present embodiment, difficulty is maximum, adopt cantilever design, rear guide vane cover 5 with pump line 4 connecting ring in conjunction with length, can meet strength demand, all the other length of rear guide vane 51 are stretched out with cantilever.The structure of this opening is beneficial to the deposition quality of RESEARCH OF PYROCARBON.Keep uniform gap with rotor and vias inner walls during 5 assembling of rear guide vane cover simultaneously.Realizing integration manufacture is the technical characteristic adopting RESEARCH OF PYROCARBON to manufacture the pump housing, by the enforcement of this programme, eliminate metal manufactures such as adopting titanium alloy, the wedge angle that stator and pump line press-fit are unavoidably formed, micro chink Ji Siliu district, reduce the risk of thrombosis.
A feature of the present embodiment is front and back bearings is all that direct-view is visible, and fine setting when being conducive to assembling, is conducive to the state of preoperation inspection pump simultaneously.
The present embodiment, the bend pipe 1 that becomes a mandarin goes out to flow bend pipe 6 and the axes normal of rotor, is not limited to this form.Be applied to different using states and implant site, and the mode of different structure circulation canals, become a mandarin bend pipe 1, go out to flow bend pipe 6 and rotor axis between angle adjust with the need, become a mandarin simultaneously bend pipe 1, go out to flow the angular relationship in bend pipe 6 space, also need to set with human dissection feature.But the principle of above-mentioned change to destroy the visuality of bearing, if the visuality of destroying, the manufacture difficulty of the technical program increases.
The above know-why being preferred embodiment of the present invention and using; for a person skilled in the art; when not deviating from the spirit and scope of the present invention; any based on apparent changes such as the equivalent transformation on technical solution of the present invention basis, simple replacements, all belong within scope.

Claims (6)

1. a RESEARCH OF PYROCARBON circulatory assit blood pump, it is characterized in that: it is manufactured by RESEARCH OF PYROCARBON material, it includes the bend pipe that becomes a mandarin (1), coil case (2), pump line (4), rear guide vane pipe (5), rear guide vane (51), goes out to flow bend pipe (6), front rotary shaft (71), fore bearing end cap (8), rotor leading portion (9), rotor pilot blade (91), rotor back segment (11), rear rotating shaft (121), rear bearing end cap (13); Runner is U-shaped;
This rotor leading portion (9) is connected with rotor back segment (11) formation rotor;
The blood flow entrance of this bend pipe that becomes a mandarin (1) is perpendicular to rotor axis (14), this blood stream outlet going out to flow bend pipe (6) is perpendicular to rotor axis, fore bearing (7) is fixed in the lateral wall of the bend pipe that becomes a mandarin (1), and rear bearing (12) is fixed in the lateral wall of stream bend pipe (6).
2. RESEARCH OF PYROCARBON circulatory assit blood pump according to claim 1, it is characterized in that: front rotary shaft (71) one end is inserted in the termination of rotor leading portion (9), the other end is inserted in fore bearing (7), is provided with fore bearing end cap (8) in the outer end of fore bearing (7); Rear rotating shaft (121) one end is inserted in the termination of rotor back segment (11), and the other end is inserted in rear bearing (12), is provided with rear bearing end cap (13) in the outer end of rear bearing (12).
3. RESEARCH OF PYROCARBON circulatory assit blood pump according to claim 2, it is characterized in that: rotor pilot blade (91) is located at the middle part of rotor, be connected with the lateral wall of rotor leading portion (9), permanent magnet (10) is provided with in rotor leading portion (9), the excircle of rotor pilot blade (91) is provided with the pump line (4) of thin-walled, this pump line (4) one end is connected with the inner side mouth of the bend pipe that becomes a mandarin (1), the other end is connected with the one end of rear guide vane pipe (5), the other end of this rear guide vane pipe (5) is connected with the inner side mouth going out to flow bend pipe (6).
4. RESEARCH OF PYROCARBON circulatory assit blood pump according to claim 3, is characterized in that: be connected with rear guide vane (51) in the medial wall of stator pipe (5).
5. RESEARCH OF PYROCARBON circulatory assit blood pump according to claim 4, it is characterized in that: on the outer wall of pump line (4), be provided with drive coil (3), this drive coil (3) is radial corresponding with permanent magnet (10).
6. RESEARCH OF PYROCARBON circulatory assit blood pump according to claim 5, it is characterized in that: be provided with in the outer end that the rotor axis of the inner side mouth of the bend pipe that becomes a mandarin (1) is parallel the bend pipe annular groove (101) that becomes a mandarin, be provided with out stream bend pipe annular groove (61) in the outer end that the rotor axis of the inner side mouth going out to flow bend pipe (6) is parallel, become a mandarin bend pipe annular groove (101) and go out to flow between bend pipe annular groove (61) and be socketed with coil case (2).
CN201410539856.6A 2014-10-14 2014-10-14 Pyrolytic carbon cycling auxiliary blood pump Pending CN104225697A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104740706A (en) * 2015-04-21 2015-07-01 焦雷 Blood pump of medical mechanism
CN107281567A (en) * 2017-07-27 2017-10-24 胡春雷 Left ventricle auxiliary pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4994078A (en) * 1988-02-17 1991-02-19 Jarvik Robert K Intraventricular artificial hearts and methods of their surgical implantation and use
WO1996018358A1 (en) * 1994-12-16 1996-06-20 Robert Jarvik High reliability cardiac assist system
US6050975A (en) * 1999-02-25 2000-04-18 Thermo Cardiosystems, Inc. Control of tissue growth in textured blood-contacting surfaces
US20030100816A1 (en) * 2000-04-01 2003-05-29 Thorsten Siess Paracardial blood pump
CN204121482U (en) * 2014-10-14 2015-01-28 中国医学科学院阜外心血管病医院 RESEARCH OF PYROCARBON circulatory assit blood pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4994078A (en) * 1988-02-17 1991-02-19 Jarvik Robert K Intraventricular artificial hearts and methods of their surgical implantation and use
WO1996018358A1 (en) * 1994-12-16 1996-06-20 Robert Jarvik High reliability cardiac assist system
US6050975A (en) * 1999-02-25 2000-04-18 Thermo Cardiosystems, Inc. Control of tissue growth in textured blood-contacting surfaces
US20030100816A1 (en) * 2000-04-01 2003-05-29 Thorsten Siess Paracardial blood pump
CN204121482U (en) * 2014-10-14 2015-01-28 中国医学科学院阜外心血管病医院 RESEARCH OF PYROCARBON circulatory assit blood pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104740706A (en) * 2015-04-21 2015-07-01 焦雷 Blood pump of medical mechanism
CN107281567A (en) * 2017-07-27 2017-10-24 胡春雷 Left ventricle auxiliary pump

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Application publication date: 20141224