CN116099121A - Novel magnetic drive direct ventricular assist device - Google Patents
Novel magnetic drive direct ventricular assist device Download PDFInfo
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- CN116099121A CN116099121A CN202310258980.4A CN202310258980A CN116099121A CN 116099121 A CN116099121 A CN 116099121A CN 202310258980 A CN202310258980 A CN 202310258980A CN 116099121 A CN116099121 A CN 116099121A
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Images
Classifications
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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
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
-
- 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
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/191—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart mechanically acting upon the outside of the patient's native heart, e.g. compressive structures placed around the heart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/289—Devices for mechanical circulatory actuation assisting the residual heart function by means mechanically acting upon the patient's native heart or blood vessel structure, e.g. direct cardiac compression [DCC] devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/465—Details relating to driving for devices for mechanical circulatory actuation
- A61M60/489—Details relating to driving for devices for mechanical circulatory actuation the force acting on the actuation means being magnetic
- A61M60/492—Details relating to driving for devices for mechanical circulatory actuation the force acting on the actuation means being magnetic generated by permanent magnets
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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
- A61M60/80—Constructional details other than related to driving
- A61M60/839—Constructional details other than related to driving of devices for mechanical circulatory actuation
-
- 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
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
Abstract
The invention relates to a novel magnetic drive direct ventricular assist device, which comprises a pump body and a control part. The pump body comprises a liquid layer, a permanent magnetic layer and a protective layer. The permanent magnetic layer is positioned outside the liquid layer, the liquid layer is connected with the protective layer only at the top, and the rest is not connected. The control section includes a solenoid device and a current control device. The solenoids are arranged on the upper side and the lower side of the pump body in an upper row and a lower row. The current control device provides current for the solenoid, and the solenoid generates a magnetic field to enable the pump body permanent magnet rotor to start to move and press inwards, so that heart ejection is assisted.
Description
Technical Field
The invention relates to the field of implantation of artificial organs, in particular to a heart auxiliary device for treating severe heart failure.
Background
Heart failure is a complex clinical syndrome of impaired ventricular filling or ejection capability caused by heart structure or function abnormality, is a disease seriously endangering life health of human beings, in China, the death rate of heart failure is close to 40%, the death rate within 5 years is over malignant tumor, and the incidence rate of heart failure is increased year by year along with the aggravation of the old people in China, however, the traditional medicine for treating heart failure has a certain limitation, can not achieve satisfactory curative effect, and the problem of shortage of heart donors is increasingly serious, in order to improve the survival probability of patients, and the researchers propose a method for assisting heart recovery by using a heart assisting device.
Heart assist devices are classified into ventricular assist devices and total artificial hearts. Wherein the direct ventricular assist device in the total artificial heart is directly wrapped on the surface of the heart or the aorta, and the weakened heart or the aorta is extruded so as to pump out blood meeting physiological requirements. The direct heart assist device does not need to be in direct contact with blood, and can avoid the problem of blood damage. After the auxiliary treatment of the artificial heart, part of heart failure patients can recover the blood pumping function of the natural heart, so that the auxiliary device is required to be convenient to detach. Currently, most of the main direct heart assist devices are pneumatic devices, the compressed air provides sufficient compression force, and the transmission between the compressed air source and the compression unit is required to pass through a flexible tube on the skin. The invention provides a novel ventricular assist device, which adopts a magnetic driving mode, so that the problem of blood compatibility caused by contact with blood is reduced, the pollution caused by an air hose of a traditional device is avoided, and the device is convenient to install and detach.
Disclosure of Invention
In order to solve the problem of blood compatibility of the total artificial heart and develop a pollution-free and convenient heart auxiliary mode, the invention provides a novel magnetic driving direct ventricular assist device.
The scheme adopted for solving the technical problem is as follows: a novel magnetic drive direct ventricular assist device is cup-shaped and comprises a pump body (1) and a control device (2);
the inner side (6) of the liquid layer of the pump body (1) is made of a material with high elasticity and good biocompatibility, and the outer side (7) of the liquid layer is made of a material with common elasticity and has a certain thickness; the permanent magnet layer (5) is divided into an upper circle, a middle circle and a lower circle, the upper circle, the middle circle and the lower circle are surrounded on the outer side of the liquid layer, the permanent magnet layer (5) comprises a permanent magnet rotor and a permanent magnet rotor containing position (9), the permanent magnet rotor is placed in the permanent magnet rotor containing position (9), the upper circle, the middle circle and the lower circle of the permanent magnet rotor containing position (9) respectively correspond to the upper part, the middle part and the apex part of the heart, each circle is provided with a plurality of permanent magnet rotor containing positions (9), the protective layer (4) is positioned outside the liquid layer and the permanent magnet layer, and is a latticed shell formed by non-deformable materials; the liquid layer (3) is connected with the top of the protective layer (4) in a sealing way, and the rest parts are not connected;
the control device (2) comprises a solenoid (10) which is positioned on the upper side and the lower side of the pump body (1), the current control device provides current for the solenoid (10), the solenoid (10) generates a magnetic field to enable the permanent magnet rotor to start moving and extrude inwards, so that heart ejection is assisted, in addition, the current control device controls the magnetic field intensity generated by the solenoid (10) tube by changing the current magnitude, and further changes the extrusion degree of the permanent magnet rotor to the heart, and the pump body (1) is not in direct contact with the control device (2).
Further, the inner side (6) of the liquid layer and the outer side (7) of the liquid layer are made of materials with different elasticity, the inner side (6) of the liquid layer and the outer side (7) of the liquid layer are in sealing connection at the cup mouth position at the top end, other parts are not connected to form a water storage bag, and a sealable round opening (8) is formed in the bottom end of the outer side (7) of the liquid layer.
Furthermore, the permanent magnet rotor storage position (9) and the permanent magnet rotor are fixed by a buckle or an embedding mode, the number of the permanent magnet rotors can be changed according to the position of the extrusion heart, and the magnetic poles of the permanent magnet rotors positioned at the left side and the right side are oppositely placed when the permanent magnet rotor storage position (9) is placed.
Further, the protective layer (4) is of a net structure, the cup mouth position at the top end is connected with the liquid layer (3), and the shell of the protective layer (4) is detachable and is opened for 180 degrees towards two sides.
Further, the solenoids (10) are divided into two rows, and each row of solenoids is provided with a compensation coil (11).
Further, the current control device is an adjustable current device, and can perform current adjustment according to systole and diastole.
Further, the device takes the form of magnetic drive, and the current control device enables the solenoid to generate a uniform magnetic field, and then the permanent magnet rotor moves in the magnetic field and is pressed inwards.
The inner side of the liquid layer is made of high-elasticity materials with good biocompatibility, the upper end of the liquid layer is kept to be open, the outer side (7) of the liquid layer is made of elastic materials with certain thickness, the bottom of the outer side of the liquid layer can be provided with a closed circular opening (8), liquid can be filled into the liquid layer from the bottom of the closed circular opening (8) on the outer side of the liquid layer, the inner accommodating heart space of the liquid layer is reduced along with the increase of filled liquid, and the inner size of the pump body can be adjusted at any time so as to adapt to different heart sizes.
The permanent magnet mover is arranged on the outer side of the liquid layer, and the permanent magnet mover should be uniformly distributed when the permanent magnet mover is arranged. The protection layer adopts non-deformable material to the protection layer is designed into grid structure, the protection layer keeps certain clearance with the liquid layer, leaves sufficient space for liquid layer (3) and permanent magnetism layer (5) shrink and diastole, and the design of grid structure both can protect inlayer device to receive the magnetic field effect only and produce deformation, plays the effect of isolation protection simultaneously, can also guarantee that inside heat dissipation is not influenced and observe the permanent magnetism active cell driving condition.
The protection layer is a grid-shaped shell which can be symmetrically opened towards two sides by 180 degrees, the middle of the protection layer is fixed in a clamping manner and the like, and the permanent magnet can be conveniently detached.
The addition of the compensation coils at both ends of the solenoid is inconvenient because the long straight solenoid has only a middle part with approximately uniform magnetic field, the magnetic field at both ends decays very fast, and the solenoid is too long to be wound and used, so the solenoid takes the form of an end solenoid plus the compensation coil.
Compared with the prior art and the method, the invention has the following advantages:
1. the invention relates to a novel magnetic drive direct ventricular assist device, wherein the volume of a liquid layer can be changed along with the volume of liquid filling, so that the fit between the heart and the inner side of the device is ensured, the heart size of different patients can be changed, the availability of the device is improved to a certain extent, and the use cost is reduced.
2. The invention relates to a novel magnetic drive direct ventricular assist device, which is convenient to operate in clinical application due to a detachable structure, so that the risk of surgery is reduced, and the pain of a patient is relieved.
3. The invention relates to a novel magnetic drive direct ventricular assist device, which adopts a magnetic drive mode, does not need an air hose of a traditional pneumatic pump to transmit a compressed air source and a compression unit, and largely avoids the infection of the air hose exposed outside.
4. The invention relates to a novel magnetic drive direct ventricular assist device, wherein a pump body part can determine the discharge quantity of a permanent magnet rotor according to the magnitude of the inward extrusion force of a heart, and apply different magnitudes of force to different parts of the heart.
5. The invention relates to a novel magnetic drive direct ventricular assist device, wherein a control device can adjust the current to control the magnetic field intensity, thereby controlling the degree of pump body assisted heart ejection.
6. The invention relates to a novel magnetic drive direct ventricular assist device, wherein a solenoid of a control device adopts a stepped compensation coil mode, and the problem of magnetic field attenuation at two ends of the solenoid is effectively solved.
Drawings
FIG. 1 is a schematic diagram of a pump body of a novel magnetically driven direct ventricular assist device of the present invention.
FIG. 2 is an open schematic diagram of a novel magnetically driven direct ventricular assist device protective layer device of the present invention.
FIG. 3 is a schematic cross-sectional view of a pump body of a novel magnetically driven direct ventricular assist device of the present invention.
In the figure, a pump body 1, a control device 2, a liquid layer 3, a protective layer 4, a permanent magnet layer 5, a liquid layer inner side 6, a liquid layer outer side 7, a sealable circular opening 8, a permanent magnet rotor storage position 9, a solenoid 10 and a compensation solenoid 11;
Detailed Description
Referring to fig. 1, 2 and 3, fig. 1 is a schematic diagram of a pump body of a novel magnetic driving direct ventricular assist device according to the present invention, and fig. 2 is a schematic diagram of a protective layer opening of a novel magnetic driving direct ventricular assist device according to the present invention. FIG. 3 is a schematic cross-sectional view of a pump body of the novel magnetically driven direct ventricular assist device of the present invention, the device comprises a pump body (1) and a control device (2), the control device (2) comprises a current control device, and the current control device is connected with one side of a solenoid (10) through a wire; the pump body takes the shape of a cup, the innermost layer of the pump body is a liquid layer, and the liquid layer is divided into an inner side and an outer side. The inner side (6) of the liquid layer is connected with the outer side (7) of the liquid layer at the cup mouth, the rest parts are not connected, a water storage bag is formed, and a sealable round opening (8) with the diameter of 10mm is formed in the bottom of the cup at the outer side (7) of the liquid layer; when the sealable circular opening (8) is opened, the connectable hose fills or discharges liquid into or from the liquid layer. The liquid adopts normal saline, the permanent magnet layer (5) at the outer side (7) of the liquid layer corresponds to the upper part and the middle part of the heart respectively, three circles of permanent magnet rotor storage positions (9) are respectively arranged at the apex of the heart, each circle of permanent magnet rotor storage positions (9) are attached to the outer side of the liquid layer, the permanent magnet rotors can be fixed in a buckling or embedding mode and the like, the embedding quantity of the permanent magnet rotors is changed according to the size of the heart, and the permanent magnet rotor storage positions (9) are uniformly distributed at the outer side of the liquid layer; the embedded permanent magnet movers are uniformly distributed on the outer side (7) of the liquid layer, and the permanent magnet movers on the left side and the right side are opposite in magnetic poles. The protective layer is made of a biological metal Ti-5A1-2.5Sn (TA 7) titanium alloy material, the shape of the outermost protective layer (4) is consistent with that of the liquid layer (3), the protective layer (4) is connected with the liquid layer (3) at the cup mouth, the cup-shaped form is also maintained, and the liquid layer (3) is wrapped inside the protective layer.
As a specific embodiment of the invention, the inner side (6) of the liquid layer adopts high-quality high-elasticity polyurethane, and the outer side (7) of the liquid layer adopts medical silica gel.
As a specific example of the present invention, physiological saline is used as the liquid filled in the liquid layer (3).
As a specific embodiment of the invention, the bottom of the outer side of the liquid layer is provided with a closed circular opening, before the liquid layer is taken into the heart, the protective layer (4) is opened, the configuration quantity of the permanent magnet active cell is adjusted, liquid is injected into the liquid layer through the circular opening according to the size of the heart, and after the liquid injection is completed, the closed circular opening (8) is closed.
As a specific example of the present invention, the sealable circular opening (8) is used for injecting and removing liquid for the liquid layer, in this example, physiological saline is adopted, and the sealable circular opening (8) has good sealing performance, so that the liquid layer (3) is not leaked when being driven by the permanent magnet active cell.
As a specific embodiment of the invention, the protective layer can be opened at the left side and the right side and rotated 180 degrees, the permanent magnet rotor can be opened when the pump body is disassembled or the permanent magnet rotor is disassembled, the protective layer is made of non-deformable materials, the protective layer (4) is in a grid shape, the liquid layer and the permanent magnet layer are prevented from being interfered by other forces except for magnetic driving, and meanwhile, the grid shape can observe the driving condition of the permanent magnet rotor.
As a specific example of the invention, the permanent magnet rotor accommodating position (9) is fixed by adopting a buckle. The buckle is made of the same non-deformable material as the outer side of the protective layer (4).
As a specific example of the invention, the plurality of permanent magnet mover storage positions (9) can enable the novel ventricular assist device to increase or decrease the number of permanent magnet movers to be installed, and each circle of the novel ventricular assist device can be provided with different numbers of permanent magnet movers to apply different forces to different heart positions so as to realize accurate assist.
As an example of the present invention, the solenoid described above takes the form of a stepped compensation coil, as shown in fig. 1. Since the long straight solenoid has only an approximately uniform magnetic field in the middle portion, the magnetic field at both ends will decay rapidly, and the solenoid adopts a method of multi-layer winding the short solenoid at both ends. Two layers of compensation solenoids (11) are additionally wound on the short straight solenoid (10) to provide a uniform magnetic field for the permanent magnet mover.
Referring to fig. 1, 2 and 3, the invention relates to a novel magnetic drive direct ventricular assist device, wherein a liquid layer (3) is directly contacted with and wrapped around a heart, and the liquid layer (3) is sterilized before actual operation, so that the heart is ensured not to be secondarily injured due to the early preparation problem. And opening the protective layer, adjusting the permanent magnet layers, and uniformly installing the permanent magnet movers to the outer side of the liquid layer according to the number of the required permanent magnet movers. And the magnetic poles are opposite to each other on the two sides of the permanent magnet rotor. The solenoid is located the upper and lower both sides of pump body (1), and the installation is accomplished the back, inserts the power, the power is along with the frequency increase of heart shrink reduces to control solenoid produces the magnetic field, and at this moment, the permanent magnetism active cell is along with the current increase and decrease shrink motion, opens the but the airtight circular trompil of liquid layer, pours into liquid into the liquid layer through the hose, and the back is accomplished in the notes liquid, but the airtight circular trompil of closure. The housing is closed. The solenoid is installed and connected with a current control device, the current control device is an adjustable current power supply, the current can be changed, the current of the current control device is weakened along with the increase of the heart contraction rhythm, so that the intensity of a magnetic field is controlled, and the heart ejection contained in the pump body is further assisted. After the assistance to the heart is completed, the current control means are turned off, the control means stop the assistance, and the control means are removed. Opening the protective layer grid shell, and detaching the pump body (1). And opening the bottom sealable circular opening (8), performing liquid discharge operation, and closing the sealable circular opening (8) after the liquid discharge operation is finished. And (5) taking down the permanent magnet mover of the permanent magnet layer (5), and closing the protective layer (4).
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The novel magnetic drive direct ventricular assist device is characterized by being cup-shaped and comprising a pump body (1) and a control device (2);
the inner side (6) of the liquid layer of the pump body (1) is made of a material with high elasticity and good biocompatibility, and the outer side (7) of the liquid layer is made of a material with common elasticity and has a certain thickness; the permanent magnet layer (5) is divided into an upper circle, a middle circle and a lower circle, the upper circle, the middle circle and the lower circle are surrounded on the outer side of the liquid layer, the permanent magnet layer (5) comprises a permanent magnet rotor and a permanent magnet rotor containing position (9), the permanent magnet rotor is placed in the permanent magnet rotor containing position (9), the upper circle, the middle circle and the lower circle of the permanent magnet rotor containing position (9) respectively correspond to the upper part, the middle part and the apex part of the heart, each circle is provided with a plurality of permanent magnet rotor containing positions (9), the protective layer (4) is positioned outside the liquid layer and the permanent magnet layer, and is a latticed shell formed by non-deformable materials; the liquid layer (3) is connected with the top of the protective layer (4) in a sealing way, and the rest parts are not connected;
the control device (2) comprises a solenoid (10) which is positioned on the upper side and the lower side of the pump body (1), the current control device provides current for the solenoid (10), the solenoid (10) generates a magnetic field to enable the permanent magnet rotor to start moving and extrude inwards, so that heart ejection is assisted, in addition, the current control device controls the magnetic field intensity generated by the solenoid (10) tube by changing the current magnitude, and further changes the extrusion degree of the permanent magnet rotor to the heart, and the pump body (1) is not in direct contact with the control device (2).
2. The novel magnetically-driven direct ventricular assist device according to claim 1, wherein the inner side (6) of the liquid layer and the outer side (7) of the liquid layer are made of materials with different elasticity, the inner side (6) of the liquid layer and the outer side (7) of the liquid layer are in sealing connection at the top cup opening position, other parts are not connected to form a water storage bag, and a sealable circular opening (8) is formed in the bottom end of the outer side (7) of the liquid layer.
3. The novel magnetic drive direct ventricular assist device according to claim 1, wherein the permanent magnet mover storage position (9) and the permanent magnet mover are fixed by a buckle or by an embedding manner, the number of the permanent magnet movers can be changed according to the position of the extrusion heart, and the magnetic poles of the permanent magnet movers positioned at the left side and the right side are placed oppositely when the permanent magnet mover storage position (9) is placed.
4. A novel magnetically driven direct ventricular assist device as claimed in claim 1, wherein the protective layer (4) is of a mesh structure, is connected to the liquid layer (3) at the top rim of the cup, and the protective layer (4) is detachable with its outer casing open 180 ° to both sides.
5. A novel magnetically driven direct ventricular assist device according to claim 1, characterized in that the solenoids (10) are divided into two rows and each row is provided with a compensation coil (11).
6. A novel magnetically driven direct ventricular assist device as claimed in claim 1 wherein the current control means is an adjustable current means capable of current regulation in accordance with systole and diastole.
7. A novel magnetically driven direct ventricular assist device as claimed in claim 1 wherein the device is in the form of a magnetic drive and the current control means causes the solenoid to generate a uniform magnetic field and the permanent magnet mover is then moved in the magnetic field to press inwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310258980.4A CN116099121A (en) | 2023-03-15 | 2023-03-15 | Novel magnetic drive direct ventricular assist device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310258980.4A CN116099121A (en) | 2023-03-15 | 2023-03-15 | Novel magnetic drive direct ventricular assist device |
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| Publication Number | Publication Date |
|---|---|
| CN116099121A true CN116099121A (en) | 2023-05-12 |
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|---|---|---|---|
| CN202310258980.4A Pending CN116099121A (en) | 2023-03-15 | 2023-03-15 | Novel magnetic drive direct ventricular assist device |
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| CN1524000A (en) * | 2000-09-23 | 2004-08-25 | �ڶ��ƶ�������ҽ���豸����˾ | Blood circulation assistance device |
| US20050004420A1 (en) * | 2003-06-18 | 2005-01-06 | The Texas A&M University System | Device for proactive modulation of cardiac strain patterns |
| US20140378744A1 (en) * | 2013-06-21 | 2014-12-25 | Corvivo Inc. | Ventricular Assist Device |
| WO2016133203A1 (en) * | 2015-02-19 | 2016-08-25 | 学校法人久留米大学 | Ventricular assistance device |
| CN113546298A (en) * | 2021-07-20 | 2021-10-26 | 成都市第三人民医院 | In-vivo component and system for magnetomotive heart auxiliary power system |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1524000A (en) * | 2000-09-23 | 2004-08-25 | �ڶ��ƶ�������ҽ���豸����˾ | Blood circulation assistance device |
| US20050004420A1 (en) * | 2003-06-18 | 2005-01-06 | The Texas A&M University System | Device for proactive modulation of cardiac strain patterns |
| US20140378744A1 (en) * | 2013-06-21 | 2014-12-25 | Corvivo Inc. | Ventricular Assist Device |
| CN105517590A (en) * | 2013-06-21 | 2016-04-20 | 科万维公司 | Artificial ventricles |
| WO2016133203A1 (en) * | 2015-02-19 | 2016-08-25 | 学校法人久留米大学 | Ventricular assistance device |
| CN113546298A (en) * | 2021-07-20 | 2021-10-26 | 成都市第三人民医院 | In-vivo component and system for magnetomotive heart auxiliary power system |
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