WO2013150646A1 - 磁気駆動ポンプ装置 - Google Patents
磁気駆動ポンプ装置 Download PDFInfo
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- WO2013150646A1 WO2013150646A1 PCT/JP2012/059548 JP2012059548W WO2013150646A1 WO 2013150646 A1 WO2013150646 A1 WO 2013150646A1 JP 2012059548 W JP2012059548 W JP 2012059548W WO 2013150646 A1 WO2013150646 A1 WO 2013150646A1
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- impeller
- driven body
- pump device
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- pump case
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0686—Mechanical details of the pump control unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
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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
- A61M60/196—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body replacing the entire heart, e.g. total artificial hearts [TAH]
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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
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
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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
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven 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
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
-
- 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
- A61M60/871—Energy supply devices; Converters therefor
- A61M60/876—Implantable batteries
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/04—General characteristics of the apparatus implanted
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/10—General characteristics of the apparatus with powered movement mechanisms
- A61M2205/103—General characteristics of the apparatus with powered movement mechanisms rotating
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/35—Communication
- A61M2205/3507—Communication with implanted devices, e.g. external control
- A61M2205/3515—Communication with implanted devices, e.g. external control using magnetic means
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/35—Communication
- A61M2205/3507—Communication with implanted devices, e.g. external control
- A61M2205/3523—Communication with implanted devices, e.g. external control using telemetric means
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/587—Lighting arrangements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
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- 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
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
Definitions
- the present invention includes an impeller rotatably disposed in a pump chamber of a pump case and a drive unit provided outside the pump chamber, and applies a rotating magnetic field to the impeller in a non-contact manner from the drive unit.
- the present invention relates to a magnetic drive pump device in which an impeller is rotated, and more particularly to a magnetic drive pump device suitable as an artificial heart.
- the pump device described in Patent Document 1 includes an impeller rotatably disposed in a pump chamber of a pump case, and a disk disposed outside the pump chamber, and the rotation center of the impeller is the center of the disk.
- the impeller and the disc are arranged to face each other in a state of being aligned with the center.
- Permanent magnets are arranged in the circumferential direction around the center of rotation at portions corresponding to each other of the impeller and the disc. The permanent magnet of the impeller and the permanent magnet of the disc are different from each other, and an attractive force acts between them.
- Such a magnetic drive pump device capable of rotating the impeller without contact is expected to be applied to an artificial heart. That is, if the pump case containing the impeller is embedded in the body, and the disk connected to the rotary actuator is disposed outside the body and the impeller can be rotated by rotating the disk from the outside of the body, the tube or cable is placed on the skin. Since there is no need to penetrate, the burden on the patient is significantly reduced. In addition, if the rotary actuator is configured to be driven by a battery, the patient's activity range can be expanded.
- the pump case in order to rotate the impeller with a disc disposed outside the body, the pump case is embedded in the body in such a posture that the impeller magnet is close to the body surface and the center of rotation of the impeller is perpendicular to the body surface. There must be. For this reason, the suction port of the pump case opens toward the deep part of the body, and the tube connected to the suction port extends toward the deep part of the body, greatly restricting the installation location of the pump case. In order to prevent hemolysis, it is difficult to increase the rotation speed of the impeller. Therefore, in order to increase the discharge amount, it is effective to arrange a plurality of impellers on the same axis, but the dimension along the axial direction of the pump case increases, and the installation location of the pump case is further restricted. Will be.
- an object of the present invention is to provide a magnetically driven pump device in which a pump case can be embedded without being greatly restricted in installation location. It is another object of the present invention to provide a magnetic drive pump device that can easily detect the operating state of the impeller from the outside.
- a magnetically driven pump device includes an impeller rotatably disposed in a pump chamber of a pump case, a driven body that rotates integrally with the impeller, and includes a permanent magnet. And a drive unit provided outside the pump chamber, wherein the impeller is rotated relative to the pump case by applying a rotating magnetic field to the driven body without contact from the drive unit.
- permanent magnets are arranged on the driven body so that different polarities appear alternately on the outer periphery when the driven body rotates, and the drive unit rotates when a predetermined axis is rotated.
- the magnet body is arranged side by side on the driven body in a state where the center is in a non-perpendicular direction with respect to the center of rotation of the impeller, and the magnet body is rotated by the rotary actuator via the driven body.
- the impeller is rotated.
- the present invention is the above-described magnetic drive pump device, wherein the driven body has a cylindrical shape with the rotation center of the impeller as an axis, and the permanent magnet is disposed on an outer peripheral surface thereof.
- the magnet body of the drive unit has a cylindrical shape with the rotation center as an axis, and the permanent magnet is arranged on the outer peripheral surface thereof, and the outer peripheral surfaces of the driven unit are close to the driven body. It is characterized by being installed in a state.
- the present invention is configured such that the impeller is formed in a cylindrical outer shape so that the axis is the center of rotation, and the driven bodies are provided on both end faces of the impeller, And the magnet body of the said drive unit was formed in the length over the surrounding surface of each to-be-driven body provided in the both end surfaces of the impeller, It is characterized by the above-mentioned.
- the present invention is characterized in that, in the magnetic drive pump device described above, the outer diameter of the driven body is matched with the outer diameter of the impeller.
- the present invention is characterized in that, in the above-described magnetic drive pump device, the impeller is integrally formed by a permanent magnet constituting the driven body.
- an induction coil is disposed in the pump case so that a current flows in accordance with a change in a magnetic field when the driven body rotates, and the induction coil includes
- the pump case is provided with a control unit that operates according to a flowing current.
- an induction coil is disposed in the pump case so that a current flows in accordance with a change in a magnetic field when the driven body rotates, and the induction coil includes A light source that is lit by a flowing current is provided in the pump case.
- a magnetic drive pump device includes an impeller rotatably disposed in a pump chamber of a pump case, a driven body that rotates integrally with the impeller and includes a permanent magnet,
- a magnetic drive pump device comprising: a drive unit provided outside; and applying a rotating magnetic field to the driven body in a non-contact manner from the drive unit, the impeller is rotated with respect to the pump case.
- An induction coil is disposed in the pump case so that a current flows in accordance with a change in magnetic field when the driven body rotates, and a control unit that operates according to the current flowing in the induction coil is provided in the pump case. It is characterized by.
- a magnetic drive pump device includes an impeller rotatably disposed in a pump chamber of a pump case, a driven body that rotates integrally with the impeller and includes a permanent magnet,
- a magnetic drive pump device comprising: a drive unit provided outside; and applying a rotating magnetic field to the driven body in a non-contact manner from the drive unit, the impeller is rotated with respect to the pump case.
- An induction coil is disposed in the pump case so that a current flows in accordance with a change in magnetic field when the driven body rotates, and a light source that is turned on by the current flowing in the induction coil is provided in the pump case.
- control unit includes a wireless communication unit that detects an operation state of the impeller through a sensor and outputs the detection result to the outside.
- the driven body that rotates integrally with the impeller and the magnet body that is rotated by the rotary actuator are arranged side by side in a non-right angle direction, and the impeller is rotated by driving the rotary actuator. Therefore, it becomes possible to embed the pump case in a posture in which the rotation center of the impeller is along the surface, and there is no fear that the place where the pump case is installed is greatly restricted.
- the induction coil is disposed in the pump case, and the light source and the control unit are operated by the current flowing through the induction coil. Therefore, the operation of the impeller can be performed without supplying power from the outside. It becomes possible to detect the state from the outside.
- FIG. 1 is a cross-sectional side view of a magnetic drive pump device according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an appearance of the magnetic drive pump device shown in FIG.
- FIG. 3 is a cross-sectional view schematically showing a state in which the pump case of the magnetic drive pump device shown in FIG. 1 is disposed inside the body and the drive unit is disposed outside the body.
- FIG. 4 is an external perspective view of a rotor in which an impeller and a driven body applied to the magnetic drive pump device shown in FIG. 1 are integrally formed.
- FIG. 5 is a block diagram for explaining the function of the magnetically driven pump device shown in FIG.
- FIG. 6 is a diagram illustrating an arrangement mode of the magnetic drive pump device shown in FIG. 1.
- FIG. 1 and 2 show a magnetic drive pump device according to an embodiment of the present invention.
- the magnetic drive pump device illustrated here is configured on the assumption that it is applied as an artificial heart, and includes a pump unit 10 and a drive unit 20.
- the pump unit 10 is a part that directly contacts the fluid and applies pressure, and includes a pump case 11.
- the pump case 11 includes a cylindrical case main body 11a closed at both ends, a suction passage 11b provided on one end surface of the case main body 11a, and a discharge passage 11c provided on the peripheral surface of the case main body 11a. Thus, it is integrally molded with a synthetic resin.
- the case body 11a is sized to be placed on the palm, specifically, an outer diameter of about 20 mm and a length of about 30 mm, and has a pump chamber 11d therein.
- the pump chamber 11d is a hollow portion having a circular cross section, and communicates with the outside through a suction passage 11b and a discharge passage 11c.
- the suction passage 11b is formed with a diameter smaller than that of the pump case 11, and is provided on the extension of the axial center of the pump chamber 11d. As shown in FIG. 3, the discharge passage 11c extends in an arc shape from the outer peripheral surface of the pump case 11 along the circumferential direction, and its base end portion opens to the inner peripheral surface of the pump chamber 11d. .
- the pump case 11 is provided with a rotor 12 inside a pump chamber 11d.
- the rotor 12 has a cylindrical shape having an outer diameter slightly smaller than the inner diameter of the pump chamber 11d and a length slightly smaller than the pump chamber 11d. It is possible to rotate around.
- the rotor 12 is provided with a communication hole 12a at the center and a plurality of impellers 12b at the center in the axial direction.
- the communication hole 12a is a through hole having a circular cross section having substantially the same inner diameter as the opening of the suction passage 11b, and is formed at a position on the axis of the rotor 12 as shown in FIG.
- the impeller 12b is a portion in which a plurality of flow paths are radially formed by disposing a plurality of vanes 12c in gaps that open from the communication holes 12a to the outer peripheral surface of the rotor 12, respectively. As shown in FIG.
- the impeller 12b is configured by providing four flow paths.
- the outer diameters of the impellers 12b are equal to each other and coincide with the outer diameters of the portions of the rotor 12 connected to both ends of the impeller 12b (hereinafter referred to as “driven body 12d”).
- the rotor 12 is formed by integrally molding the driven body 12d together with the impeller 12b by injection molding a plastic magnet material.
- permanent magnets are disposed over the entire length including the portions constituting the driven body 12d and the impeller 12b at both ends. More specifically, one side portion of the rotor 12 that is divided into two planes including the axial center becomes an N pole over the entire length in the axial direction, and the other one side portion becomes an S pole over the entire length in the axial direction.
- a permanent magnet is formed by magnetizing the magnet. When the rotor 12 rotates about the axis, N poles and S poles appear alternately on the outer periphery thereof.
- the pump case 11 is provided with an induction coil 13, a light source 14, and a control unit 15, as shown in FIGS.
- the induction coil 13 is provided so that an induced current flows along with a change in the magnetic field of the rotor 12 when the rotor 12 accommodated in the pump chamber 11d rotates, and is affixed to the outer peripheral surface of the pump case 11. .
- the induction coil 13 is connected to a rectifier 16 for outputting the induced alternating current as a direct current.
- the light source 14 is turned on when a current flows through the induction coil 13. In the present embodiment, a light emitting diode is applied as the light source 14.
- control unit 15 is configured to have a desired function by mounting electronic components on a circular circuit board, and the unit of the pump case 11 together with the rectifier 16 and the light source 14. It is disposed in the accommodating portion 11e.
- the unit accommodating portion 11 e is a recess provided on the other end surface of the pump case 11 and is closed by the lid member 17 in a state where the control unit 15 is accommodated.
- a partition wall 11f is provided between the unit housing portion 11e and the pump chamber 11d, and no fluid flows between the unit housing portion 11e and the pump chamber 11d.
- the control unit 15 is operated by the current flowing through the induction coil 13, and has an operation state detection unit 15a and a wireless communication unit 15b as shown in FIG.
- the operating state detection unit 15a supplies power to the various sensors 18a, 18b, and 18c, and detects the operating state of the impeller 12b through detection signals output from the sensors 18a, 18b, and 18c.
- a temperature sensor 18a for detecting the temperature of the pump chamber 11d, a flow rate sensor 18b for detecting the flow rate through the discharge passage 11c, and a pressure sensor 18c for detecting the pressure of the fluid passing through the discharge passage 11c are respectively pumped.
- the wireless communication unit 15b converts the detection result of the operation state detection unit 15a into transmission data and wirelessly transmits it to the outside through the antenna 15c.
- the drive unit 20 of the magnetic drive pump device is for providing a rotating magnetic field in a non-contact manner to the driven body 12d of the rotor 12 disposed in the pump case 11, and is configured separately from the pump case 11.
- a rotation actuator 22 is provided inside the drive unit case 21.
- the drive unit case 21 has a cylindrical shape with both ends closed, and is formed of synthetic resin.
- the rotary actuator 22 is an electric motor with a single drive shaft 22b protruding from the main body 22a, and is fixed inside the drive unit case 21 via the main body 22a together with a battery (not shown) as a power source.
- a magnet body 23 is fixed to a drive shaft 22b.
- the magnet body 23 is formed in a columnar shape having the same length and the same outer diameter as the rotor 12, and is disposed inside the drive unit case 21 so as to be rotatable around its own axis. .
- a permanent magnet is arranged at a part extending over the entire length. Specifically, one side portion obtained by dividing the magnet body 23 into two planes including the axial center becomes the N pole over the entire length in the axial direction, and the other side portion becomes the S pole over the entire length in the axial direction.
- the permanent magnet is constituted by being magnetized.
- the axial center of the magnet body 23 is in a state in which the axial center of the magnet body 23 is non-perpendicular to the rotation center of the impeller 12b, preferably as shown in FIG. And the rotation center of the impeller 12b are parallel to each other, and the magnet bodies 23 are arranged side by side on the driven body 12d in a state where the outer peripheral surfaces are close to each other.
- the magnet body 23 has the N pole in proximity to the driven body 12 d
- the rotor 12 rotates in an appropriate direction inside the pump case 11, and the driven body 12d is in a state where the south pole is brought close to the magnet body 23.
- the magnetic drive pump device can function as an artificial heart.
- four impellers 12b are arranged side by side on the rotor 12, even when the rotor 12 is rotated at a relatively low rotational speed, it is possible to supply a sufficient amount of blood and prevent hemolysis. Preferred above.
- the magnet body 23 of the drive unit 20 is arranged in a non-right angle direction with respect to the rotation center of the impeller 12b, a magnetic drive pump device that can apply a rotating magnetic field from the magnet body 23 to the impeller 12b in a non-contact manner.
- the pump case 11 can be embedded in the body with the rotation center of the impeller 12b being in a posture along the body surface. Therefore, not only is there no fear that the installation location of the pump case 11 will be greatly restricted, but the burden on the patient will be significantly reduced as compared with the case where the pump case 11 is implanted deep in the body.
- the rotary actuator 22 is driven by a battery (not shown), the viewer is not restrained by a cable or a tube. For example, as shown in FIG. It can also be placed in the inner pocket, greatly expanding the range of activities.
- the induction coil 13 is disposed in the pump case 11 and the light source 14 and the control unit 15 are operated by the current flowing through the induction coil 13, the operation of the impeller 12b is performed without supplying power from the outside.
- the state can be detected. That is, when the impeller 12b rotates and a current flows through the induction coil 13, the light-emitting diode that is the light source 14 is turned on. Therefore, it is determined whether or not the impeller 12b is rotating by checking the lighting state from outside the body. be able to.
- control unit 15 is operated by the current flowing through the induction coil 13, and the detection result of the temperature sensor 18a, the detection result of the flow sensor 18b, and the detection result of the pressure sensor 18c are transmitted by the wireless communication unit 15b.
- the temperature of the pump chamber 11d, the flow rate of the blood passing through the discharge passage 11c, and the pressure of the blood passing through the discharge passage 11c can be monitored, and the operating state of the impeller 12b can be detected in more detail.
- the magnetic drive pump device applied as an artificial heart is illustrated, but the present invention is not necessarily limited to the artificial heart and can be used for other purposes.
- the impeller 12b and the driven body 12d are integrally formed using a plastic magnet material, a larger attractive force is applied to the magnet body 23 of the drive unit 20.
- the impeller 12b and the driven body 12d do not need to be formed integrally, and the impeller 12b does not need to be configured as a permanent magnet.
- the driven body 12d and the magnet body 23 are each formed in a columnar shape.
- the driven body 12d and the magnet body 23 do not necessarily have to be formed in a columnar shape. It is sufficient that a permanent magnet is arranged so as to appear.
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- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Mechanical Engineering (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
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- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
11d ポンプ室
12b インペラ
12d 被駆動体
13 誘導コイル
14 光源
15 制御ユニット
15b 無線通信部
18a,18b,18c センサ
20 駆動ユニット
21 駆動ユニットケース
22 回転アクチュエータ
23 磁石体
Claims (10)
- ポンプケースのポンプ室に回転可能に配設したインペラと、前記インペラと一体に回転し、かつ永久磁石を備えた被駆動体と、前記ポンプ室の外部に設けた駆動ユニットとを備え、前記駆動ユニットから非接触で前記被駆動体に回転磁界を与えることにより、前記ポンプケースに対して前記インペラを回転させるようにした磁気駆動ポンプ装置において、
前記被駆動体には、回転した場合にその外周上に交互に異極が現れるように永久磁石を配置し、
前記駆動ユニットは、所定の軸心を中心として回転した場合にその外周上に交互に異極が現れるように永久磁石を配置した磁石体と、前記磁石体をその軸心を中心として回転させる回転アクチュエータとを備え、
前記磁石体の軸心が前記インペラの回転中心に対して非直角の向きとなる状態で前記磁石体を前記被駆動体に並べて設置し、前記回転アクチュエータによって前記磁石体を回転させることにより前記被駆動体を介して前記インペラを回転させることを特徴とする磁気駆動ポンプ装置。 - 前記被駆動体は、前記インペラの回転中心を軸心とした円柱状を成し、その外周面に前記永久磁石を配置したものであり、
前記駆動ユニットの磁石体は、その回転中心を軸心とした円柱状を成し、その外周面に前記永久磁石を配置したものであり、前記被駆動体に対して互いの外周面が近接する状態で設置することを特徴とする請求項1に記載の磁気駆動ポンプ装置。 - 軸心が回転中心となるように前記インペラを円柱状の外形形状に構成するとともに、前記インペラの両端面にそれぞれ前記被駆動体を設け、かつ前記駆動ユニットの磁石体は、インペラの両端面に設けたそれぞれの被駆動体の周面に渡る長さに形成したことを特徴とする請求項2に記載の磁気駆動ポンプ装置。
- 前記インペラの外径に対して前記被駆動体の外径を一致させたことを特徴とする請求項3に記載の磁気駆動ポンプ装置。
- 前記被駆動体を構成する永久磁石によって前記インペラを一体に構成したことを特徴とする請求項2に記載の磁気駆動ポンプ装置。
- 前記被駆動体が回転した場合の磁界の変化に伴って電流が流れるように前記ポンプケースに誘導コイルを配設するとともに、前記誘導コイルに流れる電流によって動作する制御ユニットを前記ポンプケースに設けたことを特徴とする請求項1に記載の磁気駆動ポンプ装置。
- 前記被駆動体が回転した場合の磁界の変化に伴って電流が流れるように前記ポンプケースに誘導コイルを配設するとともに、前記誘導コイルに流れる電流によって点灯する光源を前記ポンプケースに設けたことを特徴とする請求項1に記載の磁気駆動ポンプ装置。
- ポンプケースのポンプ室に回転可能に配設したインペラと、前記インペラと一体に回転し、かつ永久磁石を備えた被駆動体と、前記ポンプ室の外部に設けた駆動ユニットとを備え、前記駆動ユニットから非接触で前記被駆動体に回転磁界を与えることにより、前記ポンプケースに対して前記インペラを回転させるようにした磁気駆動ポンプ装置において、
前記被駆動体が回転した場合の磁界の変化に伴って電流が流れるように前記ポンプケースに誘導コイルを配設するとともに、前記誘導コイルに流れる電流によって動作する制御ユニットを前記ポンプケースに設けたことを特徴とする磁気駆動ポンプ装置。 - ポンプケースのポンプ室に回転可能に配設したインペラと、前記インペラと一体に回転し、かつ永久磁石を備えた被駆動体と、前記ポンプ室の外部に設けた駆動ユニットとを備え、前記駆動ユニットから非接触で前記被駆動体に回転磁界を与えることにより、前記ポンプケースに対して前記インペラを回転させるようにした磁気駆動ポンプ装置において、
前記被駆動体が回転した場合の磁界の変化に伴って電流が流れるように前記ポンプケースに誘導コイルを配設するとともに、前記誘導コイルに流れる電流によって点灯する光源を前記ポンプケースに設けたことを特徴とする磁気駆動ポンプ装置。 - 前記制御ユニットは、センサを通じて前記インペラの動作状態を検出し、その検出結果を外部に出力する無線通信部を有することを特徴とする請求項6または請求項8に記載の磁気駆動ポンプ装置。
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JP2014508979A JPWO2013150646A1 (ja) | 2012-04-06 | 2012-04-06 | 磁気駆動ポンプ装置 |
PCT/JP2012/059548 WO2013150646A1 (ja) | 2012-04-06 | 2012-04-06 | 磁気駆動ポンプ装置 |
US14/390,815 US20150157778A1 (en) | 2012-04-06 | 2012-04-06 | Magnetic driving pump device |
DE112012006197.7T DE112012006197T8 (de) | 2012-04-06 | 2012-04-06 | Magnetpumpeinrichtung |
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AU2003901696A0 (en) | 2003-04-09 | 2003-05-01 | Cochlear Limited | Implant magnet system |
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US10091594B2 (en) | 2014-07-29 | 2018-10-02 | Cochlear Limited | Bone conduction magnetic retention system |
US10130807B2 (en) | 2015-06-12 | 2018-11-20 | Cochlear Limited | Magnet management MRI compatibility |
US20160381473A1 (en) | 2015-06-26 | 2016-12-29 | Johan Gustafsson | Magnetic retention device |
US10917730B2 (en) | 2015-09-14 | 2021-02-09 | Cochlear Limited | Retention magnet system for medical device |
US10576276B2 (en) | 2016-04-29 | 2020-03-03 | Cochlear Limited | Implanted magnet management in the face of external magnetic fields |
US11595768B2 (en) | 2016-12-02 | 2023-02-28 | Cochlear Limited | Retention force increasing components |
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- 2012-04-06 DE DE112012006197.7T patent/DE112012006197T8/de not_active Ceased
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DE112012006197T5 (de) | 2014-12-24 |
US20150157778A1 (en) | 2015-06-11 |
JPWO2013150646A1 (ja) | 2015-12-14 |
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