Wireless drive implantable aorta blood pump

Abstract

The invention discloses a wireless drive implantable aorta blood pump. The wireless drive implantable aorta blood pump comprises a retractable support and foldable paddles. The retractable stent comprises a stent body which can be elastically retracted so as to be placed in a blood vessel in a retracted state and attached to the wall of the blood vessel in an expanded state; the power coil is arranged on the surface of the bracket body and is wirelessly connected with an external wireless charging device so as to generate a magnetic field in a power-on state; the sensor is arranged on the surface of the bracket body and is used for monitoring data; the data transmission part is arranged on the surface of the bracket body, is electrically connected with the sensor and is used for wirelessly transmitting the monitoring data to an external control system; the foldable paddle is movably arranged in the bracket body in a penetrating manner and can be switched between a folded state and an unfolded state; wherein the foldable paddle can continuously rotate under the magnetic field force by utilizing a magnetic material. The blood pump does not need to extend too deep into the left ventricle and does not disturb normal blood flow of the ventricle.

Description

Technical Field

[0001] The present invention relates to a wirelessly driven implantable aortic blood pump, belonging to the technical field of medical devices. Background Art

[0002] Heart failure is abbreviated as HF. Its root cause lies in various initial myocardial injury factors, such as myocardial infarction, excessive hemodynamic load, and inflammation. These factors cause changes in myocardial structure and function, and then lead to disorders in cardiac systolic and diastolic functions. Finally, it is manifested as the amount of blood pumped by the heart being unable to meet the needs of body tissues, becoming a characteristic clinical syndrome.

[0003] Regarding the current treatment status of advanced heart failure, there is currently no simple and efficient method. Among many treatment methods, heart transplantation and artificial heart are the only relatively effective surgical treatment methods. However, due to the extremely limited source of donors for heart transplantation, it has largely become a symbolic technology and is difficult to be widely applied in clinical practice. Therefore, the artificial heart has become the last hope for saving the lives of the vast majority of heart failure patients. The artificial heart is also abbreviated as "blood pump", and its scope includes total artificial heart and assistive artificial heart (also known as "ventricular assist device"). Internationally, several products of assistive blood pumps have obtained clinical approval and are widely used in clinical applications. The working principle of a typical ventricular assist device is to draw blood from the left ventricle, pressurize it, and then transport it to the aorta to assist the heart in doing work.

[0004] Blood pumps represented by axial flow blood pumps and centrifugal blood pumps have become the focus in clinical applications due to their advantages such as less blood damage and suitability for installation in the chest cavity. However, the currently disclosed blood pumps have some obvious disadvantages. For example, they are all active implants, prone to electrical failures, and are also accompanied by problems such as high heat generation, complex structure, dead corners, and easy formation of thrombus. In addition, during the application of left ventricular assist devices, the insertion depth of the inlet blood vessel is a key variable affecting the patient's hemodynamics and thrombus risk. The inlet blood vessel design of traditional ventricular assist devices may extend excessively into the left ventricle, and this configuration easily disrupts the normal blood flow in the ventricle, especially at the top of the ventricle, thereby increasing the possibility of thrombus formation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a wirelessly driven implantable aortic blood pump.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] A wirelessly driven implantable aortic blood pump includes a contractile stent and foldable blades; wherein,

[0008] The collapsible stent includes:

[0009] A stent body, which is elastically collapsible and is used to be inserted into a blood vessel in a collapsed state and to fit against the blood vessel wall in an expanded state;

[0010] A power coil, which is arranged on the surface of the stent body and is wirelessly connected to an external wireless charging device to generate a magnetic field in an energized state;

[0011] A sensor, which is arranged on the surface of the stent body and is used to monitor pressure data and / or blade rotation data;

[0012] A data transmission unit, which is arranged on the surface of the stent body and is electrically connected to the sensor, and is used to wirelessly transmit the pressure data and / or blade rotation data to an external control system;

[0013] The foldable blades are movably inserted into the stent body and can be switched between a folded state and an unfolded state; wherein, the foldable blades contain a first magnetic material so that the foldable blades can continuously rotate under the magnetic force.

[0014] Preferably, both ends of the foldable blades and the blades of the foldable blades are provided with the first magnetic material so that the foldable blades can be suspended in the stent body under the magnetic force and can also continuously rotate under the magnetic force.

[0015] Preferably, both ends of the foldable blades are respectively inserted into two magnetic levitation rings, and both of the magnetic levitation rings are located in the stent body and are respectively supported at both ends of the stent body through bendable support parts;

[0016] Wherein, the magnetic levitation rings contain a second magnetic material, and the second magnetic material cooperates with the first magnetic material so that both ends of the foldable blades are respectively suspended in the two magnetic levitation rings.

[0017] Preferably, both ends of the foldable blades are respectively inserted into two rotary bearings, and both of the rotary bearings are located in the stent body and are respectively supported at both ends of the stent body through bendable support parts.

[0018] Preferably, the power coil includes a plurality of independent spiral coils, and a conductive coating is coated on the outer side of each spiral coil and is attached to the surface of the stent body;

[0019] Wherein, the plurality of spiral coils are evenly distributed along the circumferential direction of the stent body to jointly wind at least one circle.

[0020] Preferably, the stent body includes:

[0021] The power support is a basket-shaped network tube with closed ends at both ends and can be switched between a contracted state and an expanded state. Wherein, magnetic suspension rings are arranged inside the closed ends at both ends of the power support, and the magnetic suspension rings contain a second magnetic material. The second magnetic material cooperates with the first magnetic material so that the two ends of the foldable blade are respectively suspended in the two magnetic suspension rings.

[0022] The fixed support is a basket-shaped network tube with closed ends at both ends and can be switched between a contracted state and an expanded state. Wherein, the fixed support is sleeved outside the power support and can be attached to the blood vessel wall in the expanded state.

[0023] Preferably, the stent body includes:

[0024] The power support is a basket-shaped network tube with closed ends at both ends and can be switched between a contracted state and an expanded state. Wherein, magnetic suspension rings are arranged inside the closed ends at both ends of the power support, and the magnetic suspension rings contain a second magnetic material. The second magnetic material cooperates with the first magnetic material so that the two ends of the foldable blade are respectively suspended in the two magnetic suspension rings.

[0025] The fixed support is arranged at one end of the magnetic suspension ring away from the power support and can be switched between a contracted state and an expanded state, and is used to be attached to the blood vessel wall in the expanded state.

[0026] Preferably, there are two fixed supports, and the two fixed supports are respectively fixedly connected to the two magnetic suspension rings.

[0027] Preferably, the sensor includes:

[0028] The pressure sensor is arranged on the stent body and is respectively located at the two ends of the foldable blade to respectively monitor the liquid pressures at the two ends of the foldable blade.

[0029] The Hall sensor is arranged on the stent body and is used to monitor the rotation speed of the foldable blade.

[0030] Preferably, the surface of the stent body also has a film protective layer, and the film protective layer wraps outside the power coil, the sensor and the data transmission part.

[0031] Compared with the prior art, the present invention has the following technical effects:

[0032] (1) The aortic blood pump is very convenient to implant. It can be placed in the aorta through a simple minimally invasive surgery, thereby pumping blood from the left ventricle into the aorta to supply blood to the whole body. In addition, the aortic blood pump does not need to extend too deep into the left ventricle during operation, so as not to disrupt the normal blood flow in the ventricle, thereby effectively reducing the probability of thrombus formation at the top of the ventricle.

[0033] (2) The foldable blades adopt a suspended design and are suspended in a retractable bracket, which enables the foldable blades to rotate in a zero-friction environment. In this way, hemolysis can be reduced, the occurrence of thrombotic complications can be reduced, and the safety and practicality of use can be greatly improved.

[0034] (3) Different foldable blades can be freely replaced according to actual medical needs, so as to better meet the needs of various medical scenarios and demonstrate strong flexibility and adaptability.

[0035] (4) By introducing an external wireless power supply, the aortic blood pump is driven to achieve ventricular assist function. Since the implantation method is power-free, the risk of failure caused by electrical problems in traditional implantable blood pumps is eliminated. In addition, the aortic blood pump does not require stator windings and iron cores, and there will be no electrical heating problems in the body, which greatly reduces its weight and volume, making it easier to deploy and evacuate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a wirelessly driven implantable aortic blood pump provided by the first embodiment of the present invention;

[0037] Figure 2 This is a schematic structural diagram of a spiral coil in the first embodiment of the present invention;

[0038] Figure 3 A schematic structural diagram of a wirelessly driven implantable aortic blood pump provided by a second embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a wirelessly driven implantable aortic blood pump provided in a third embodiment of the present invention;

[0040] Figure 5 This is a schematic structural diagram of another wirelessly driven implantable aortic blood pump provided in the third embodiment of the present invention. DETAILED DESCRIPTION

[0041] The technical content of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] An embodiment of the present invention provides a wirelessly driven implantable aortic blood pump (referred to as the aortic blood pump for short), which can be implanted in the body for a long time through minimally invasive surgery (in the aorta in the embodiment of the present invention, but not limited thereto), is convenient for deployment and evacuation, and can also drive the aortic blood pump to work through an external wireless power supply method to help the heart pump the blood in the left ventricle into the aorta, and then supply the whole body.

[0043] The first embodiment

[0044] As Figure 1 shown, a wirelessly driven implantable aortic blood pump provided by the first embodiment of the present invention includes a collapsible stent 10 and a foldable blade 20. Among them, the collapsible stent 10 can switch between a contracted state and an expanded state, so that the collapsible stent 10 can be first contracted and then stored in the sheath. When the sheath enters the deployment position, the collapsible stent 10 is released into the blood vessel, so that the outer wall of the collapsible stent 10 fits against the blood vessel wall after expansion. Correspondingly, the foldable blade 20 can be first folded and then stored in the sheath, and is released after extending into the collapsible stent 10. When the foldable blade 20 is unfolded, the collapsible stent 10 is equivalent to a stator, and the foldable blade 20 is equivalent to a rotor, thus jointly forming a complete brushless motor. At this time, the foldable blade 20 is driven to rotate in the collapsible stent 10 through an external wireless power supply method to improve the blood supply capacity of the heart.

[0045] Specifically, in this embodiment, the collapsible stent 10 includes a stent body 1, a power coil 2, a sensor 3, and a data transmission part 4. Among them, the stent body 1 is made of a biocompatible metal or polymer material, and can be formed into a basket-type structure network tube by engraving or weaving (not limited to the specific structure form and formation method). The main function is to fit the outer wall of the stent body 1 against the blood vessel wall through expansion to play a role in supporting the blood vessel and provide a rotation space for the foldable blade 20. In this embodiment, the stent body 1 restores its elasticity through the elastic recovery of the shape memory alloy. Before implantation, the stent is given a lower temperature, and after contacting the blood in the human body and being affected by the human body temperature, it restores its elasticity and expands after the restraint is released. It can be understood that Figure 1 the stent body 1 shown in

[0046] is a basket-type structure network tube with open ends at both ends. The opening sizes at both ends of the stent body 1 match the diameter of the blood vessel, so as to avoid hindering the blood flow and ensure the blood flow patency to the greatest extent.

[0046] The power coil 2 is arranged on the surface of the stent body 1 and is wirelessly connected to an external wireless charging device to generate a magnetic field in the energized state. Specifically, as Figure 1 shown, the power coil 2 is jointly composed of a plurality of independent spiral coils 21. Preferably, as Figure 2As shown, a conductive coating 211 (e.g., a gold coating) is coated on the outer side of each spiral coil 21 to improve the current transmission efficiency. More preferably, the spiral coil 21 can be set in an arc shape, and the bending radian of the arc-shaped spiral coil 21 matches the bending radian of the surface of the bracket body (which can be the outer surface or the inner surface), so that it can be closely attached to the surface of the bracket body 1. In this embodiment, a plurality of spiral coils 21 are evenly distributed along the circumferential direction of the bracket body 1 to jointly wind at least one circle (one circle in this embodiment, and can also be wound into multiple circles or a spiral shape in other embodiments). It can be understood that the wireless power transmission of the power coil 2 can be one of "electromagnetic induction wireless charging", "electromagnetic resonance wireless charging", "radio wave wireless charging", or "electric field coupling wireless charging", or be compatible with several schemes at the same time.

[0047] As Figure 1 As shown, the foldable blade 20 is movably inserted into the bracket body 1 (to be described in detail below) and can be switched between a folded state and an unfolded state. Among them, the foldable blade 20 includes a first magnetic material. When an external wireless charging device energizes the power coil 2 to generate a magnetic field, the magnetic force generated by the magnetic field will exert a force on the first magnetic material to drive the foldable blade 20 to continuously rotate in the bracket body 1.

[0048] The sensor 3 is arranged on the surface of the bracket body 1 for monitoring pressure data and / or blade rotation data. Specifically, in this embodiment, the sensor 3 includes a pressure sensor 31 and a Hall sensor 32. Among them, the pressure sensor 31 is arranged on the bracket body 1 and is respectively located at both ends of the foldable blade 20 to respectively monitor the liquid pressure at both ends of the foldable blade 20. The Hall sensor 32 is one or more semiconductor materials arranged on the bracket body 1, which can be materials such as gallium arsenide, indium antimonide, or indium arsenide, and the shape can be a sheet, a cuboid, or a tile shape, etc. When the brushless motor starts to work, the magnetic flux lines exert a force on the semiconductor material, and this force causes the charge carriers (electrons and holes) to move to one side of the semiconductor material. When these electrons and holes move to the side, a differential voltage (i.e., potential difference) is generated between both sides of the semiconductor material through the accumulation of these charge carriers, thus constituting a complete Hall sensor. It can be understood that as the magnetic field strength changes, the differential voltage generated between both sides of the Hall sensor will also change, and the magnitude of the magnetic field strength is proportional to the rotation speed of the foldable blade 20, so that the rotation speed of the foldable blade 20 can be monitored by using the Hall sensor 32.

[0049] The data transmission unit 4 is disposed on the surface of the stent body 1 and is electrically connected to the sensor 3, and is used for wirelessly transmitting the pressure data and / or the blade rotation data to an external control system. Thus, the external control system can adjust the power supply intensity of the wireless charging device in real time according to the received pressure data and / or the blade rotation data, so that the foldable blade 20 can continuously maintain an appropriate rotation speed.

[0050] As Figure 1 shown, in this embodiment, preferably, both ends of the foldable blade 20 and the blade 201 of the foldable blade 20 are provided with a first magnetic material, so that the foldable blade 20 can be suspended in the stent body 1 under the magnetic force and can also rotate continuously under the magnetic force. Specifically, both ends of the foldable blade 20 are respectively inserted into two magnetic levitation rings 202. The two magnetic levitation rings 202 are both located in the stent body 1 and are respectively supported at both ends of the stent body 1 through bendable support portions 203. Among them, the specific bending manner of the support portion 203 also adopts the form of a shape memory alloy. The magnetic levitation ring 202 contains a second magnetic material, and the second magnetic material cooperates with the first magnetic material, so that both ends of the foldable blade 20 are respectively suspended in the two magnetic levitation rings 202, thereby ensuring that the foldable blade 20 rotates in a zero-friction environment. It can be understood that the first magnetic material and the second magnetic material can be permanent magnets or electromagnetic materials that generate magnetism after contacting an electric current.

[0051] In addition, in another embodiment, a rotary bearing can also be used to replace the magnetic levitation ring 202. However, after using the rotary bearing, slight friction will be generated between both ends of the foldable blade 20 and the inner surface of the rotary bearing, which will affect the rotation speed of the foldable blade 20 to a certain extent, but the overall stability of the foldable blade 20 is better.

[0052] In addition, as Figure 1 shown, in the above embodiment, preferably, the surface of the stent body 1 further has a film protection layer 5. The film protection layer 5 is wrapped outside the power coil, the sensor and the data transmission unit to play a protective role. Among them, the film protection layer 5 can be made of a polymer material, such as preferably thermoplastic polyurethane (TPU) and expanded polytetrafluoroethylene (ePTFE) materials, etc.

[0053] Second Embodiment

[0054] As Figure 3 shown, a wirelessly driven implantable aortic blood pump provided by the second embodiment of the present invention includes a collapsible stent 10 and a foldable blade 20. Compared with the first embodiment, the difference in this embodiment is that the structural form of the stent body 1 is different.

[0055] Specifically, in this embodiment, the stent body 1 includes a power stent 11 and a fixed stent 12. Among them, the power stent 11 is inside, and the power coil 2, the sensor 3, and the data transmission unit 4 are all arranged on the power stent 11 to realize their respective functions. The fixed stent 12 is outside, mainly playing the role of supporting the blood vessel and providing a safe and stable working environment for other components.

[0056] In this embodiment, the power stent 11 is a basket-type structure network tube with closed ends at both ends and can be switched between a contracted state and an expanded state. Among them, magnetic levitation rings 202 are provided inside the closed ends at both ends of the power stent 11, so that the bendable support portion 203 in the first embodiment can be omitted. Correspondingly, the foldable blades 20 are located inside the power stent 11, and both ends of the foldable blades 20 are respectively inserted into the two magnetic levitation rings 202. Thus, when the power coil 2 is energized to generate a magnetic field, the foldable blades 20 can levitate inside the power stent 11 and continuously rotate inside the power stent 11.

[0057] The fixed stent 12 is also a basket-type structure network tube with closed ends at both ends and can be switched between a contracted state and an expanded state. Among them, the size of the fixed stent 12 is larger than that of the power stent 11. The fixed stent 12 is sleeved outside the power stent 11 and can fit the blood vessel wall in the expanded state.

[0058] It can be understood that based on the basket-type structures of the power stent 11 and the fixed stent 12, during the rotation of the foldable blades 20, blood or other liquids in the blood vessel can pass through the power stent 11 and the fixed stent 12 through the hollow holes without obstruction or with extremely low obstruction.

[0059] Except for the above differences, the rest of the structure in this embodiment is the same as that in the first embodiment and will not be elaborated here.

[0060] Third Embodiment

[0061] As Figure 4 shown, a wirelessly driven implantable aortic blood pump provided by the third embodiment of the present invention includes a collapsible stent 10 and foldable blades 20. Compared with the first embodiment, the difference in this embodiment lies in the different structural forms of the stent body 1.

[0062] Specifically, in this embodiment, the stent body 1 includes a power stent 11 and a fixed stent 12. Among them, the power stent 11 and the fixed stent 12 are arranged side by side along the rotation axis of the foldable blades 20. The power coil 2, the sensor 3, and the data transmission unit 4 are all arranged on the power stent 11 to realize their respective functions. The fixed stent 12 mainly plays the role of supporting the blood vessel.

[0063] In this embodiment, the power support 11 is a net basket type pipe with closed ends at both ends and can be switched between a contracted state and an expanded state. Among them, magnetic levitation rings 202 are provided inside the closed ends at both ends of the power support 11, so that the bendable support part 203 in the first embodiment can be omitted. Correspondingly, the foldable blades 20 are located inside the power support 11, and both ends of the foldable blades 20 are respectively inserted into the two magnetic levitation rings 202. Thus, when the power coil 2 is energized to generate a magnetic field, the foldable blades 20 can be suspended inside the power support 11 and continuously rotate inside the power support 11.

[0064] The fixed support 12 is a "claw type" support with one end closed and one end open, and the closed end of the fixed support 12 is arranged on the magnetic levitation ring 202, and the open end is far away from the power support 11. It can be understood that the fixed support 12 can be switched between a contracted state and an expanded state and is used to fit the blood vessel wall in the expanded state (i.e., Figure 4 the state shown).

[0065] In addition, as Figure 5 shown, in another embodiment, there are two fixed supports 12, and the two fixed supports 12 are respectively fixedly connected to the two magnetic levitation rings 202, so as to be symmetrically arranged at both ends of the power support 11 to improve the stability of the support.

[0066] It can be understood that based on the net basket type structure of the power support 11 and the "claw type" structure of the fixed support 12, during the rotation of the foldable blades 20, blood or other liquids in the blood vessel can pass through the power support 11 and the fixed support 12 through the hollow holes without obstruction or with extremely low obstruction.

[0067] Except for the above differences, the rest of the structure in this embodiment is the same as that in the first embodiment and will not be elaborated here.

[0068] To sum up, a wirelessly driven implantable aortic blood pump provided by an embodiment of the present invention has the following beneficial effects:

[0069] (1) The implantation method of the aortic blood pump is very convenient. It only needs to be implanted into the aorta through a simple minimally invasive surgery, so as to pump the blood in the left ventricle into the aorta to supply blood to the whole body. Moreover, during the working process of the aortic blood pump, it does not need to extend too deep into the left ventricle, so that the normal blood flow in the ventricle will not be disturbed, thus effectively reducing the probability of forming thrombus at the top of the ventricle.

[0070] (2) The foldable blades adopt a suspension design and are suspended in the collapsible stent, which can realize the rotation of the foldable blades in a zero-friction environment. In this way, the hemolysis phenomenon can be reduced, the occurrence of thrombus complications can be reduced, and the safety and practicability of use are greatly improved.

[0071] (3) Different collapsible blades can be freely replaced according to actual medical needs, so as to better meet the needs of various medical scenarios, showing strong flexibility and adaptability.

[0072] (4) The aortic blood pump is driven by introducing an external wireless power supply method to achieve the ventricular assist function. Since the non-powered implant method is adopted, the failure risk caused by electrical problems of traditional implantable blood pumps is eliminated. In addition, the aortic blood pump does not require a stator winding and an iron core, and there will be no problem of electrical heating in the body, which enables its weight and volume to be greatly reduced, thus facilitating the deployment and evacuation operations.

[0073] It should be noted that the above-mentioned multiple embodiments are only examples. The technical solutions of each embodiment can be combined and are all within the protection scope of the present invention.

[0074] It should be understood that the orientation or positional relationship indicated by terms such as "depth", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0075] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0076] The above has provided a detailed description of the wireless-driven implantable aortic blood pump of the present invention. For those of ordinary skill in the art, any obvious changes made to it without departing from the essence of the present invention will constitute an infringement of the patent right of the present invention and will bear corresponding legal responsibilities.

Claims

1. A wirelessly driven implantable aortic blood pump, characterized in that comprising a collapsible stent and foldable blades; wherein, the collapsible stent comprises: a stent body which is elastically collapsible and is used for being placed into a blood vessel in a collapsed state and fitting against the blood vessel wall in an expanded state; a power coil which is arranged on the surface of the stent body and is wirelessly connected with an external wireless charging device to generate a magnetic field in an energized state; a sensor which is arranged on the surface of the stent body and is used for monitoring pressure data and / or blade rotation data; a data transmission part which is arranged on the surface of the stent body and is electrically connected with the sensor and is used for wirelessly transmitting the pressure data and / or the blade rotation data to an external control system; the foldable blades are movably arranged in the stent body and can be switched between a folded state and an unfolded state; wherein, the foldable blades contain a first magnetic material so that the foldable blades can continuously rotate under a magnetic force.

2. The wirelessly driven implantable aortic blood pump according to claim 1, wherein: both ends of the foldable blades and the blades of the foldable blades are provided with the first magnetic material so that the foldable blades can be suspended in the stent body under a magnetic force and can also continuously rotate under a magnetic force.

3. The wirelessly driven implantable aortic blood pump according to claim 2, wherein: both ends of the foldable blades are respectively arranged in two magnetic suspension rings, and both of the magnetic suspension rings are located in the stent body and are respectively supported at both ends of the stent body through bendable support parts; wherein, the magnetic suspension rings contain a second magnetic material, and the second magnetic material is matched with the first magnetic material so that both ends of the foldable blades are respectively suspended in the two magnetic suspension rings.

4. The wirelessly driven implantable aortic blood pump according to claim 1, wherein: both ends of the foldable blades are respectively arranged in two rotary bearings, and both of the rotary bearings are located in the stent body and are respectively supported at both ends of the stent body through bendable support parts.

5. The wirelessly driven implantable aortic blood pump according to claim 1, wherein: the power coil comprises a plurality of independent spiral coils, and a conductive coating is coated on the outer side of each spiral coil and is attached to the surface of the stent body; wherein, the plurality of spiral coils are uniformly distributed along the circumferential direction of the stent body to jointly wind at least one circle.

6. The wirelessly-driven implantable aortic blood pump according to claim 2, characterized in that The stent body comprises: a power support which is a basket-type structure network tube with closed ends at both ends and can be switched between a collapsed state and an expanded state; wherein, magnetic suspension rings are arranged in the closed ends at both ends of the power support, and the magnetic suspension rings contain a second magnetic material, and the second magnetic material is matched with the first magnetic material so that both ends of the foldable blades are respectively suspended in the two magnetic suspension rings; A fixed stent, the fixed stent being a basket-shaped structure network tube with closed ends at both ends and capable of switching between a contracted state and an expanded state; wherein, the fixed stent is sleeved outside the power stent and can fit against the blood vessel wall in the expanded state.

7. The wirelessly-driven implantable aortic blood pump according to claim 2, wherein The stent body includes: A power stent, the power stent being a basket-shaped structure network tube with closed ends at both ends and capable of switching between a contracted state and an expanded state; wherein, magnetic suspension rings are provided inside the closed ends at both ends of the power stent, and the magnetic suspension rings contain a second magnetic material, and the second magnetic material cooperates with the first magnetic material so that both ends of the foldable blade are respectively suspended in the two magnetic suspension rings; A fixed stent, arranged at one end of the magnetic suspension ring away from the power stent and capable of switching between a contracted state and an expanded state, for fitting against the blood vessel wall in the expanded state.

8. The wirelessly driven implantable aortic blood pump according to claim 7, characterized in that: There are two fixed stents, and the two fixed stents are respectively fixedly connected to the two magnetic suspension rings.

9. The wirelessly-driven implantable aortic blood pump according to any one of claims 1 to 8, characterized in that The sensor includes: A pressure sensor, arranged on the stent body and respectively located at both ends of the foldable blade to respectively monitor the liquid pressures at both ends of the foldable blade; A Hall sensor, arranged on the stent body for monitoring the rotation speed of the foldable blade.

10. The wirelessly driven implantable aortic blood pump according to any one of claims 1 to 8, characterized in that: The surface of the stent body also has a film protection layer, and the film protection layer wraps outside the power coil, the sensor and the data transmission part.

Images