CN108525040B - A cardiac interventional left ventricular electromagnetic assist device - Google Patents
A cardiac interventional left ventricular electromagnetic assist device Download PDFInfo
- Publication number
- CN108525040B CN108525040B CN201810090183.9A CN201810090183A CN108525040B CN 108525040 B CN108525040 B CN 108525040B CN 201810090183 A CN201810090183 A CN 201810090183A CN 108525040 B CN108525040 B CN 108525040B
- Authority
- CN
- China
- Prior art keywords
- unit
- blood pump
- electromagnetic
- power
- bearing
- 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.)
- Expired - Fee Related
Links
- 230000000747 cardiac effect Effects 0.000 title claims abstract description 6
- 230000002861 ventricular Effects 0.000 title claims abstract 3
- 210000004369 blood Anatomy 0.000 claims abstract description 63
- 239000008280 blood Substances 0.000 claims abstract description 63
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 11
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 13
- 230000009466 transformation Effects 0.000 claims description 12
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229910001004 magnetic alloy Inorganic materials 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- 230000000740 bleeding effect Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 238000005339 levitation Methods 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims 3
- 239000000725 suspension Substances 0.000 abstract description 8
- 230000005674 electromagnetic induction Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 208000015181 infectious disease Diseases 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 10
- 210000005240 left ventricle Anatomy 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000000338 in vitro Methods 0.000 description 4
- 206010018910 Haemolysis Diseases 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000008588 hemolysis Effects 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000004872 arterial blood pressure Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 210000001765 aortic valve Anatomy 0.000 description 1
- 239000002473 artificial blood Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007012 clinical effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002107 myocardial effect Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
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
- A61M60/50—Details relating to control
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Mechanical Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
本发明公开了一种心脏介入式左心室电磁辅助装置，主要包括：体外控制装置和血泵，所述的体外控制装置和血泵通过皮肤层隔离，体外控制装置和血泵之间通过电磁场连接；所述的体外控制装置为横截面为长方形的盒体，所述的盒体外侧正面从左到右依次设置有功率调节旋钮、电流调节旋钮、电源开关、电磁辅助开关、液晶显示屏、充电孔；本发明利用电磁感应式控制技术，不需要在患者皮下钻导线孔，防止感染，操作简单，可长期和连续控制调节；采用新式磁悬浮轴流式血泵，控制精度高，使人工心脏所受磁场引力平衡，保持人工心脏所受磁场力平衡，提高人工心脏的寿命，可以在临床上广泛应用。
The invention discloses a cardiac interventional left ventricular electromagnetic auxiliary device, which mainly comprises: an external control device and a blood pump, the external control device and the blood pump are isolated by a skin layer, and the external control device and the blood pump are connected by an electromagnetic field The external control device is a box body with a rectangular cross-section, and the outer front of the box body is sequentially provided with a power adjustment knob, a current adjustment knob, a power switch, an electromagnetic auxiliary switch, a liquid crystal display screen, a charging The invention uses electromagnetic induction control technology, does not need to drill wire holes under the skin of the patient, prevents infection, is simple to operate, and can be controlled and adjusted continuously for a long time; the new magnetic suspension axial flow blood pump is used, and the control accuracy is high, so that the artificial heart can be controlled and adjusted continuously. It is gravitationally balanced by the magnetic field, maintains the balance of the magnetic field force on the artificial heart, and improves the lifespan of the artificial heart, which can be widely used in clinical practice.
Description
Technical Field
The invention belongs to the technical field of heart auxiliary medical appliances, and particularly relates to a heart intervention type left ventricle electromagnetic auxiliary device.
Background
The artificial blood pump is a variable-speed and variable-capacity mini-pump which is used for completely replacing the heart to work, and is classified according to the working principle of the blood pump, and the types of the blood pump are classified into a positive displacement type and a blade type; according to different auxiliary modes, the device is divided into a fully artificial heart and a ventricle auxiliary device; according to different driving modes, the driving mode is divided into pneumatic driving, electric driving and magnetic driving; the implant can be divided into an extracorporeal type and an implantable type according to the implantation position.
Compared with a volumetric blood pump, the vane type blood pump can overcome the problem of large volume and inconvenient implantation, and mainly comprises a centrifugal pump and an axial flow pump: centrifugal blood pumps are formed by mounting blades on a shaft of the blood pump, wherein when the shaft rotates at a high speed, the blades guide blood and throw the blood to the outer edge, and arterial pressure is formed by the dynamic action of the blades on the blood. The magnitude of the pressure depends on the rotational speed of the impeller, and in general, the higher the rotational speed, the higher the resulting arterial pressure. The blades of the axial flow pump are also arranged on a rotating shaft of the blood pump, when the shaft of the blood pump rotates, blood is thrown out along an inclined direction, and after the blood is guided by the guide vanes, the blood basically moves along the axial direction of the blood pump, so the axial flow type blood pump is called.
At present, a magnetic suspension heart pump is widely applied clinically as a third-generation novel blood pump, and is mainly characterized by small volume and simple structure, so that the problem of thrombus hemolysis is avoided, and a good clinical effect is obtained. The structure and the method are particularly used for the claw pole permanent magnet stepping motor of the artificial heart pump, and can adjust and control the flow and the pressure of blood output, so that the blood can normally run and stably suspend, and the overlarge temperature rise is avoided. A blood pump speed regulation control system is designed, so that the blood supply requirements of the blood pump under different physiological conditions can be detected, and the expected blood pump speed regulation design requirements are met. The aortic blood vessels are adopted to replace catheters, so that the area of foreign matters is reduced, and the probability of occurrence of thrombus and hemolysis is reduced; a magnetic coupling energy transfer mode is adopted, so that a percutaneous lead is removed, and the infection is avoided; the implantation of the ascending aorta can avoid the damage to the myocardial tissue and the aortic valve and improve the treatment effect of the patient.
However, the control of the existing magnetic suspension blood pump is completed by connecting an implanted lead into an extracorporeal control device, holes need to be formed in body parts, infection is easily caused, the control process is completed by pure current control, and the flow rate control accuracy is low.
Disclosure of Invention
The invention solves the technical problem of providing the left ventricle electromagnetic auxiliary device which has novel design and comprehensive functions and controls the flow rate of the in-vivo magnetic levitation axial flow type blood pump by controlling the magnetic field of the electromagnetic coil in a current and power two-way.
The technical scheme of the invention is as follows: a cardiac intervention type left ventricle electromagnetic auxiliary device mainly comprises: the extracorporeal control device is isolated from the blood pump through a skin layer, and the extracorporeal control device is connected with the blood pump through an electromagnetic field; the external control device is a box body with a rectangular cross section, the front surface of the outer side of the box body is sequentially provided with a power adjusting knob, a current adjusting knob, a power switch, an electromagnetic auxiliary switch, a liquid crystal display screen and a charging hole from left to right, the surface of the liquid crystal display screen is adhered with a protective film, the bottom of the right side surface of the box body is provided with a right fixing clip, the right fixing clip is fixedly provided with a right fastening belt through a screw, the bottom of the left side surface of the box body is provided with a left fixing clip, the left fixing clip is fixedly provided with a left fastening belt through a screw, the left fastening belt is fixedly connected with an adjusting buckle in a penetrating way, the adjusting buckle can connect the left fastening belt with the right fastening belt, and can adjust the fastening degree in left fastening area and right fastening area, the box body be provided with control system, control system mainly include: the device comprises a resonance transformation unit, a magnetic field direction conversion unit, a power control unit, a demodulator, a current regulation unit, a power regulation unit, a protection unit, a signal regulation unit, a current monitoring unit, a battery information unit, an electromagnetic coil and a storage battery, wherein the output end of the resonance transformation unit is connected with the electromagnetic coil, the output end of the resonance transformation unit is connected with the magnetic field direction conversion unit, the magnetic field direction conversion unit is connected with the power control unit, the power control unit is connected with the storage battery through the battery information unit, the battery information unit is electrically connected with a charging hole, the power control unit is connected with the demodulator, the current regulation unit and the power regulation unit, the protection unit is connected with the signal regulation unit, the signal regulation unit is connected with the current monitoring unit, and the current monitoring unit is connected with the electromagnetic coil, the current monitoring unit is connected to the liquid crystal display screen for real-time current display.
Further, the blood pump be magnetic suspension axial-flow type blood pump, mainly include into blood port, preceding stator, axial electromagnetic bearing, motor, radial permanent magnetic bearing, transmission shaft, back stator, the port of bleeding, the transmission shaft setting put at the radial central point of blood pump, the transmission shaft is connected with the motor, the motor outside set up radial permanent magnetic bearing, the left end and the axial electromagnetic bearing of transmission shaft are connected, axial electromagnetic bearing's left side connect preceding stator, the right side and the back stator of transmission shaft are connected, preceding stator and the coaxial correspondence of advancing the blood port, back stator and the coaxial correspondence of port of bleeding.
Furthermore, the number of turns of the electromagnetic coil is 20-30 turns, and the diameter of the electromagnetic coil is 30-40 mm.
Furthermore, the outer side of the front guide vane is in streamline gradual-change flaring transition, the outer side of the rear guide vane is in streamline gradual-change necking transition, and the inner wall of the blood pump is covered by ceramic, so that the resistance is reduced, and the flowability is enhanced.
Furthermore, the radial permanent magnet bearing and the axial electromagnetic bearing are made of silicon steel soft magnetic alloy materials, the radial permanent magnet bearing and the axial electromagnetic bearing are respectively composed of two magnetic strips, and the N, S poles of every two adjacent magnetic strips are opposite in direction.
Furthermore, the silicon steel soft magnetic alloy material contains 4.6% of silicon, which is a good deoxidizer for steel, and combines with oxygen to convert oxygen into stable SiO which is not reduced by carbon2The lattice distortion of iron caused by oxygen atom doping is avoided. Silicon forms a solid solution in alpha iron, increasing the resistivity and also helping to separate out the unwanted impurity carbon. Therefore, the addition of silicon can improve the magnetic permeability and reduce the coercive force and the iron loss. The silicon steel soft magnetic alloy is a cold rolled silicon steel sheet, has excellent magnetic performance along the rolling direction, and not only has high saturation magnetic flux density and low iron loss in a strong magnetic field, but also has good magnetism in a weak magnetic field.
Furthermore, the control system is internally provided with a frequency converter for controlling the electric power of the electric components in the control system.
Furthermore, the storage battery is externally connected with a 220V alternating current power supply through the charging hole for charging.
Furthermore, the battery information unit is internally provided with a low-power alarm module, and when the total power or voltage value of the storage battery is smaller than the set power or voltage value, an alarm signal is sent out, so that a user can charge in time in the using process, and the normal use of the device is ensured.
The working principle of the invention is as follows: after the current adjusting unit adjusts the current, the current is distributed through a built-in frequency converter of the control system, the power adjusting unit controls the high-frequency alternating current, the protection unit performs circuit protection according to the bearing capacity of a circuit of the control system, the storage battery transmits the current to the power control unit, received direct current is converted into high-frequency alternating current, the high-frequency alternating current is input to the resonance transformation unit through the magnetic field direction transformation unit, the resonance transformation unit conditions the received high-frequency alternating current to obtain high-frequency alternating current with higher power factor, and the high-frequency alternating current with higher power factor is input to the electromagnetic coil, therefore, the alternating magnetic field of the electromagnetic coil is controlled by adjusting the power and the current, the electromagnetic induction type transmission technology is utilized, and the basic principle of a permanent magnet synchronous motor is utilized to control and adjust the rotating speed of a motor in a magnetic suspension blood, thereby controlling the blood flow rate.
Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the electromagnetic induction type control technology to lead the heart in-vitro control device and the blood pump to be wirelessly connected and controlled, does not need to drill a wire guide hole under the skin of a patient, prevents infection, has simple operation, improves the postoperative life quality of the patient, has simple structure and can be continuously controlled and adjusted for a long time. The novel magnetic suspension axial flow type blood pump is adopted, the control precision is high, the on-way pressure loss of blood in a blood pump flow channel can be reduced, hemolysis is reduced, the efficiency is improved, and the damage to blood cells is reduced; therefore, the magnetic field gravitation borne by the artificial heart is balanced, the magnetic field force borne by the artificial heart is kept balanced, the service life of the artificial heart is prolonged, and the artificial heart can be widely applied clinically.
Drawings
FIG. 1 is a schematic structural diagram of a cardiac intervention type left ventricle electromagnetic assisting device of the present invention;
FIG. 2 is an electromagnetic drive circuit diagram;
FIG. 3 is a power control circuit diagram;
FIG. 4 is a current monitoring control circuit diagram;
FIG. 5 is a connection diagram of the control system;
wherein, 1-an extracorporeal control device, 2-a blood pump, 201-a blood inlet port, 202-a front guide vane, 203-an axial electromagnetic bearing, 204-a motor, 205-a radial permanent magnet bearing, 206-a transmission shaft, 207-a rear guide vane, 208-a blood outlet port, 3-a skin layer, 4-a power adjusting knob, 5-a current adjusting knob, 6-a power switch, 7-an electromagnetic auxiliary switch, 8-a protective film, 9-a liquid crystal display screen, 10-a charging hole, 11-a right fixing clip, 12-a left fixing clip, 13-a right fastening band, 14-a left fastening band, 15-an adjusting buckle, 16-a control system, 1601-a resonance transformation unit, 1602-a magnetic field direction transformation unit, 1603-a power control unit, 1604-a demodulator, 1605-current regulating unit, 1606-power regulating unit, 1607-protection unit, 1608-signal regulating unit, 1609-current monitoring unit, 1610-battery information unit, 1611-electromagnetic coil, 1612-storage battery.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
Example (b): as shown in fig. 1, a cardiac intervention type left ventricle electromagnetic assisting device mainly includes: the device comprises an in-vitro control device 1 and a blood pump 2, wherein the in-vitro control device 1 and the blood pump 2 are isolated through a skin layer 3, and the in-vitro control device 1 and the blood pump 2 are connected through an electromagnetic field; the external control device 1 is a box body with a rectangular cross section, the front surface of the outer side of the box body is sequentially provided with a power adjusting knob 4, a current adjusting knob 5, a power switch 6, an electromagnetic auxiliary switch 7, a liquid crystal display screen 9 and a charging hole 10 from left to right, a protective film 8 is pasted on the surface of the liquid crystal display screen 9, the bottom of the right side surface of the box body is provided with a right fixing clamp 11, the right fixing clamp 11 is fixedly provided with a right fastening belt 13 through screws, the bottom of the left side surface of the box body is provided with a left fixing clamp 12, the left fixing clamp 12 is fixedly provided with a left fastening belt 14 through screws, the left fastening belt 14 is fixedly provided with an adjusting buckle 15 in a penetrating way, the adjusting buckle 15 can connect the left fastening belt 14 with the right fastening belt 13 and can adjust the,
a control system 16 is arranged in the box body, as shown in fig. 5, the control system 16 mainly comprises: resonance converting unit 1601, magnetic field direction converting unit 1602, power control unit 1603, demodulator 1604, current regulating unit 1605, power regulating unit 1606, protecting unit 1607, signal regulating unit 1608, current monitoring unit 1609, battery information unit 1610, electromagnetic coil 1611 and storage battery 1612, the output end of resonance converting unit 1601 is connected with electromagnetic coil 1611, the output end of resonance converting unit 1601 is connected with magnetic field direction converting unit 1602, magnetic field direction converting unit 1602 is connected with power control unit 1603, power control unit 1603 is connected with storage battery 1612 through battery information unit 1610, battery information unit 1610 is electrically connected with charging hole 10, power control unit 1603 is connected with demodulator 1604, current regulating unit 1605 and power regulating unit 1606, protecting unit 1607 is connected with signal regulating unit 1608, signal regulating unit 1608 is connected with current monitoring unit 1609, current monitoring unit 1609 is connected with electromagnetic coil 1611, the current monitoring unit 1609 is connected to the liquid crystal display screen 9 for real-time current display; the number of turns of the electromagnetic coil 1611 is 25 turns, and the diameter is 35 mm; the control system 16 incorporates a frequency converter for controlling the electric power of the electric components in the control system 16. The storage battery 1612 is externally connected with a 220V alternating current power supply through the charging hole 10 for charging. The battery information unit 1610 is internally provided with a low power alarm module, and when the total power or voltage of the storage battery 1612 is smaller than the set power or voltage, an alarm signal is sent out, so that a user can charge the battery in time in the use process, and the normal use of the device is ensured.
The blood pump 2 is a magnetic suspension axial-flow blood pump, and mainly comprises a blood inlet port 201, a front guide vane 202, an axial electromagnetic bearing 203, a motor 204, a radial permanent magnet bearing 205, a transmission shaft 206, a rear guide vane 207 and a bleeding port 208, wherein the transmission shaft 206 is arranged at the radial center position of the blood pump 2, the transmission shaft 206 is connected with the motor 204, the radial permanent magnet bearing 205 is arranged on the outer side of the motor 204, the left end of the transmission shaft 206 is connected with the axial electromagnetic bearing 203, the left side of the axial electromagnetic bearing 203 is connected with the front guide vane 202, the right side of the transmission shaft 206 is connected with the rear guide vane 207, the front guide vane 202 coaxially corresponds to the blood inlet port 201, and the rear guide. The outer sides of the front guide vanes 202 are in streamline gradual-change flaring transition, the outer sides of the rear guide vanes 207 are in streamline gradual-change necking transition, and the inner wall of the blood pump 2 is covered by ceramic, so that the resistance is reduced, and the flowability is enhanced. The radial permanent magnet bearing 205 and the axial electromagnetic bearing 203 are made of silicon steel soft magnetic alloy materials, the radial permanent magnet bearing 205 and the axial electromagnetic bearing 203 are respectively composed of two magnetic strips, and the N, S poles of every two adjacent magnetic strips are opposite in direction.
The working principle of the invention is as follows: after the current adjusting unit 1605 adjusts the current, the current is distributed through a built-in frequency converter of the control system 16, the power adjusting unit 1606 controls the high-frequency alternating current, the protection unit 1607 performs circuit protection according to the pressure bearing capacity of the control system 16, the storage battery 1612 transmits the current to the power control unit 1603, converts the received direct current into high-frequency alternating current, and inputs the high-frequency alternating current to the resonance transformation unit 1602 through the magnetic field direction, the resonance transformation unit 1601 conditions the received high-frequency alternating current to obtain high-frequency alternating current with higher power factor, and inputs the high-frequency alternating current with higher power factor to the electromagnetic coil 1611, so that the alternating magnetic field of the electromagnetic coil 1611 is controlled by adjusting the power and the current, the electromagnetic induction type transmission technology is utilized, the basic principle of the permanent magnet synchronous motor is utilized to control and adjust the motor speed in the magnetic suspension blood pump, thereby controlling the blood flow rate.
The using method of the invention comprises the following steps: in the use, put into internally blood pump 2 through the heart operation, place external controlling means 1 in the external position that the left ventricle corresponds, then with left fastening belt 14 and right fastening belt 13 connection, use and adjust and detain 15 regulation, make external controlling means 1 fixed on the health, difficult production rocks, skew left ventricle position, turn on switch 6 and electromagnetism auxiliary switch 7, observe the power and the electric current numerical value that show on liquid crystal display 9, adjust power and electric current to required numerical value through power adjust knob 4 and electric current adjust knob 5, normal use can.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090183.9A CN108525040B (en) | 2018-01-30 | 2018-01-30 | A cardiac interventional left ventricular electromagnetic assist device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090183.9A CN108525040B (en) | 2018-01-30 | 2018-01-30 | A cardiac interventional left ventricular electromagnetic assist device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108525040A CN108525040A (en) | 2018-09-14 |
| CN108525040B true CN108525040B (en) | 2021-03-09 |
Family
ID=63486192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810090183.9A Expired - Fee Related CN108525040B (en) | 2018-01-30 | 2018-01-30 | A cardiac interventional left ventricular electromagnetic assist device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108525040B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110944689B (en) | 2017-06-07 | 2022-12-09 | 施菲姆德控股有限责任公司 | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| EP4085965A1 (en) | 2018-02-01 | 2022-11-09 | Shifamed Holdings, LLC | Intravascular blood pumps and methods of use and manufacture |
| WO2020028537A1 (en) | 2018-07-31 | 2020-02-06 | Shifamed Holdings, Llc | Intravascaular blood pumps and methods of use |
| JP7470108B2 (en) | 2018-10-05 | 2024-04-17 | シファメド・ホールディングス・エルエルシー | Intravascular blood pump and method of use |
| WO2021011473A1 (en) | 2019-07-12 | 2021-01-21 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| WO2021016372A1 (en) | 2019-07-22 | 2021-01-28 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US12465748B2 (en) | 2019-08-07 | 2025-11-11 | Supira Medical, Inc. | Catheter blood pumps and collapsible pump housings |
| WO2021062260A1 (en) | 2019-09-25 | 2021-04-01 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible blood conduits |
| US12102815B2 (en) | 2019-09-25 | 2024-10-01 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible pump housings |
| EP4034192B1 (en) | 2019-09-25 | 2025-12-24 | Supira Medical, Inc. | Intravascular blood pump systems and methods of use and control thereof |
| US12409310B2 (en) | 2019-12-11 | 2025-09-09 | Shifamed Holdings, Llc | Descending aorta and vena cava blood pumps |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008049055A (en) * | 2006-08-28 | 2008-03-06 | Hiroshima Univ | Non-contact power supply device |
| CN102151341A (en) * | 2011-05-18 | 2011-08-17 | 济南磁能科技有限公司 | Magnetic suspension artificial heart pump |
| CN103595144A (en) * | 2013-10-23 | 2014-02-19 | 北京航天控制仪器研究所 | Implantable left-ventricle auxiliary system in wireless electric energy transmission |
| CN104941017A (en) * | 2015-07-10 | 2015-09-30 | 北京工业大学 | Wireless directional energy transfer system for supplying power to artificial heart |
| CN105873624A (en) * | 2013-08-19 | 2016-08-17 | 哈特威尔公司 | Multiband wireless power system |
| CN107415706A (en) * | 2008-09-27 | 2017-12-01 | 韦特里西提公司 | Wireless energy transfer systems |
-
2018
- 2018-01-30 CN CN201810090183.9A patent/CN108525040B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008049055A (en) * | 2006-08-28 | 2008-03-06 | Hiroshima Univ | Non-contact power supply device |
| CN107415706A (en) * | 2008-09-27 | 2017-12-01 | 韦特里西提公司 | Wireless energy transfer systems |
| CN102151341A (en) * | 2011-05-18 | 2011-08-17 | 济南磁能科技有限公司 | Magnetic suspension artificial heart pump |
| CN105873624A (en) * | 2013-08-19 | 2016-08-17 | 哈特威尔公司 | Multiband wireless power system |
| CN103595144A (en) * | 2013-10-23 | 2014-02-19 | 北京航天控制仪器研究所 | Implantable left-ventricle auxiliary system in wireless electric energy transmission |
| CN104941017A (en) * | 2015-07-10 | 2015-09-30 | 北京工业大学 | Wireless directional energy transfer system for supplying power to artificial heart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108525040A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108525040B (en) | A cardiac interventional left ventricular electromagnetic assist device | |
| US12470060B2 (en) | Blood pump controllers and methods of use for improved energy efficiency | |
| US11813445B2 (en) | Mechanical circulatory support device with centrifugal impeller designed for implantation in the descending aorta | |
| CN101361994B (en) | Artificial heart blood pump that raises blood pressure step by step | |
| CN201658687U (en) | Micro screw rod-type blood pump | |
| CA2401082C (en) | Blood pump | |
| CN206443963U (en) | Flexible transmission system, percutaneous auxiliary blood pumping device and Intravascular Thrombus suction system | |
| CN106902404B (en) | Percutaneous Assisted Pumping Device | |
| EP2945661B1 (en) | Backflow detection for centrifugal blood pump | |
| CN105854097B (en) | A kind of feature artificial heart and driving method | |
| CN112543656A (en) | Removable mechanical circulation support device for short term use | |
| EP3313471A1 (en) | Ventricular assist devices having a hollow rotor and methods of use | |
| CN111097077B (en) | External magnetic drive liquid suspension axial-flow type blood pump | |
| CN107412894A (en) | A kind of heat sink of implantable cardiac auxiliary blood pump | |
| CN102166379A (en) | Adaptive drive system of aortic blood pump position | |
| CN106512118A (en) | Totally-implanted magnetic liquid dual-suspension axial-flow blood pump | |
| WO2014035354A1 (en) | Trans arterial permanent heart assist device with double stators | |
| CN111012963B (en) | An artificial heart power pump | |
| CN111012962B (en) | A ventricular assist pump | |
| CN107441573A (en) | A kind of axial-flow type magnetic suspension blood pump with pulsation speed governing feature | |
| CN110404128A (en) | There is the electrodeless variable-speed self energizing artificial heart auxiliary device of feedback function | |
| CN103585683B (en) | A kind of implantable left ventricular assist system | |
| CN203609698U (en) | Implantable type left ventricular auxiliary system | |
| CN2504815Y (en) | Saddle type external driving device of permanent magnet rotor worm-gear pump in artery | |
| CN106975112A (en) | Artificial heart |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Zhenfu Inventor after: Liu Xu Inventor after: Li Chengxiang Inventor after: He Jinfang Inventor before: He Jinfang |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210203 Address after: 266003 No. 16, Jiangsu Road, Qingdao, Shandong Applicant after: THE AFFILIATED HOSPITAL OF QINGDAO University Address before: 262400 No.1 gushanhou lane, Changle County, Weifang City, Shandong Province Applicant before: He Jinfang |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 Termination date: 20220130 |