Patents by Inventor Alexander Medvedev
Alexander Medvedev has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240001104Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.Type: ApplicationFiled: June 30, 2023Publication date: January 4, 2024Applicant: TC1 LLCInventors: Shunzhou Yu, Alexander Medvedev, Ren You
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Publication number: 20230414120Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.Type: ApplicationFiled: June 22, 2023Publication date: December 28, 2023Applicant: TC1 LLCInventors: Alexander Medvedev, Shunzhou Yu, Ren You
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Publication number: 20230414923Abstract: A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.Type: ApplicationFiled: June 30, 2023Publication date: December 28, 2023Applicant: TC1 LLCInventors: Alexander Medvedev, Masamichi Yanai
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Patent number: 11724097Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.Type: GrantFiled: December 28, 2020Date of Patent: August 15, 2023Assignee: TC1 LLCInventors: Shunzhou Yu, Alexander Medvedev, Ren You
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Patent number: 11724094Abstract: A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.Type: GrantFiled: March 18, 2021Date of Patent: August 15, 2023Assignee: TC1 LLCInventors: Alexander Medvedev, Masamichi Yanai
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Patent number: 11712167Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.Type: GrantFiled: October 28, 2020Date of Patent: August 1, 2023Assignee: TC1 LLCInventors: Alexander Medvedev, Shunzhou Yu, Ren You
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Patent number: 11639722Abstract: A ventricular assist device is disclosed. The ventricular assist device may include a centrifugal pump and a controller. The controller may be configured to cause the centrifugal pump to operate at a first speed above a predetermined flow rate. The controller may also be configured to cause the centrifugal pump to operate at a second speed below the predetermined flow rate, wherein the predetermined flowrate is indicative of a crossover point between systole and diastole phases of a person's cardiac cycle.Type: GrantFiled: December 28, 2020Date of Patent: May 2, 2023Assignee: TC1 LLCInventors: Alexander Medvedev, Muhammad Sami
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Publication number: 20210339001Abstract: A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.Type: ApplicationFiled: March 18, 2021Publication date: November 4, 2021Inventors: Alexander Medvedev, Masamichi Yanai
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Publication number: 20210187275Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.Type: ApplicationFiled: December 28, 2020Publication date: June 24, 2021Applicant: TC1 LLCInventors: Shunzhou Yu, Alexander Medvedev, Ren You
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Publication number: 20210113828Abstract: A ventricular assist device is disclosed. The ventricular assist device may include a centrifugal pump and a controller. The controller may be configured to cause the centrifugal pump to operate at a first speed above a predetermined flow rate. The controller may also be configured to cause the centrifugal pump to operate at a second speed below the predetermined flow rate, wherein the predetermined flowrate is indicative of a crossover point between systole and diastole phases of a person's cardiac cycle.Type: ApplicationFiled: December 28, 2020Publication date: April 22, 2021Applicant: TC1 LLCInventors: Alexander Medvedev, Muhammad Sami
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Patent number: 10980928Abstract: A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.Type: GrantFiled: September 20, 2019Date of Patent: April 20, 2021Assignee: TC1 LLCInventors: Alexander Medvedev, Masamichi Yanai
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Publication number: 20210038086Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.Type: ApplicationFiled: October 28, 2020Publication date: February 11, 2021Applicant: TC1 LLCInventors: Alexander Medvedev, Shunzhou Yu, Ren You
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Patent number: 10888645Abstract: A ventricular assist device is disclosed. The ventricular assist device may include a centrifugal pump and a controller. The controller may be configured to cause the centrifugal pump to operate at a first speed above a predetermined flow rate. The controller may also be configured to cause the centrifugal pump to operate at a second speed below the predetermined flow rate, wherein the predetermined flowrate is indicative of a crossover point between systole and diastole phases of a person's cardiac cycle.Type: GrantFiled: October 29, 2018Date of Patent: January 12, 2021Assignee: TC1 LLCInventors: Alexander Medvedev, Muhammad Sami
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Patent number: 10874782Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.Type: GrantFiled: December 13, 2018Date of Patent: December 29, 2020Inventors: Shunzhou Yu, Alexander Medvedev, Ren You
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Patent number: 10856748Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.Type: GrantFiled: December 13, 2019Date of Patent: December 8, 2020Assignee: TC1 LLCInventors: Alexander Medvedev, Shunzhou Yu, Ren You
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Publication number: 20200187787Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.Type: ApplicationFiled: December 13, 2019Publication date: June 18, 2020Applicant: TC1 LLCInventors: Alexander Medvedev, Shunzhou Yu, Ren You
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Publication number: 20200009307Abstract: A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.Type: ApplicationFiled: September 20, 2019Publication date: January 9, 2020Inventors: Alexander Medvedev, Masamichi Yanai
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Patent number: 10506935Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.Type: GrantFiled: July 31, 2018Date of Patent: December 17, 2019Assignee: TC1 LLCInventors: Alexander Medvedev, Shunzhou Yu, Ren You
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Patent number: 10456513Abstract: A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.Type: GrantFiled: June 30, 2017Date of Patent: October 29, 2019Assignee: TC1 LLCInventors: Alexander Medvedev, Masamichi Yanai
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Publication number: 20190184079Abstract: A rotary machine is provided which may include a rotor and a stator within a housing. The stator may be for generating a rotating magnetic field for applying a torque to the rotor. A commutator circuit may provide a plurality of phase voltages to the stator, and a controller may adjust the plurality of phase voltages provided by the commutator circuit to modify an attractive force of the stator on the rotor to move the rotor in an axial direction.Type: ApplicationFiled: December 13, 2018Publication date: June 20, 2019Applicant: TC1 LLCInventors: Shunzhou Yu, Alexander Medvedev, Ren You