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公开(公告)号：US10052421B2
公开(公告)日：2018-08-21
申请号：US15866957
申请日：2018-01-10
Applicant: HeartWare, Inc.
Inventor： Jeffrey A. Larose , Charles R. Shambaugh , Daniel G. White , Richard A. Marquis , Steven A. White , Kartikeyan Trichi
CPC classification number: A61M1/125 , A61M1/1008 , A61M1/101 , A61M1/1017 , A61M1/1031 , A61M1/1036 , A61M1/122 , A61M2205/0211 , A61M2205/0272 , A61M2205/8206 , A61M2210/127
Abstract: One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.
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公开(公告)号：US20180214055A1
公开(公告)日：2018-08-02
申请号：US15768705
申请日：2016-10-14
Applicant: CCORE TECHNOLOGY GMBH
Inventor： Susanna Neudl , Roman Ullrich , Claus-Georg Krenn , Christoph Janeczek , Margit Gföhler
CPC classification number: A61B5/14525 , A61B5/14532 , A61B5/6852 , A61M1/1006 , A61M1/101 , A61M1/1029 , A61M1/1032 , A61M1/1036 , A61M1/12 , A61M1/1678 , A61M1/3679 , B01D63/087
Abstract: A catheter for intravascular use has a blood inlet and a blood outlet, and includes a membrane arranged in the catheter in such a way that at least one part of the blood flowing into the catheter via the blood inlet during operation comes into contact with the membrane. The membrane allows an exchange of at least one substance between a carrier medium and the blood. The carrier medium is a carrier fluid in which the substance to be exchanged can be dissolved, and the catheter includes a delivery device that is designed to at least partially compensate for a pressure difference between the blood inlet and the blood outlet during operation. A method for removing at least one substance from venous blood for diagnostic purposes uses a device of this type.
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公开(公告)号：US10034972B2
公开(公告)日：2018-07-31
申请号：US15811440
申请日：2017-11-13
Applicant: TC1 LLC
Inventor： Richard K. Wampler , David M. Lancisi
IPC: A61M1/10 , A61M1/12 , F04D29/048 , F04D13/06 , F04D29/043 , F04D29/62 , F04D29/22 , F04D29/42 , F04D1/00 , F04D29/047 , F04D29/041 , F16C32/04
CPC classification number: A61M1/1015 , A61M1/101 , A61M1/1013 , A61M1/1017 , A61M1/1031 , A61M1/1036 , A61M1/122 , F04D1/00 , F04D13/06 , F04D13/0666 , F04D29/0413 , F04D29/043 , F04D29/047 , F04D29/0473 , F04D29/048 , F04D29/22 , F04D29/426 , F04D29/628 , F16C32/044 , F16C2316/18 , Y10S415/90
Abstract: Various “contactless” bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.
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公开(公告)号：US09945382B2
公开(公告)日：2018-04-17
申请号：US15337306
申请日：2016-10-28
Applicant: Medtronic, Inc.
Inventor： Roger A. Naidyhorski , Brian J. Steffens , Craig D. Petersen
IPC: F04D13/02 , F04D27/00 , F04D29/04 , F04D25/02 , F04D15/00 , F04D13/06 , F04D29/041 , F04D29/042 , F04D29/60 , A61M1/10 , F04D1/00 , F04D29/22
CPC classification number: F04D13/027 , A61M1/101 , A61M1/1012 , A61M1/1013 , A61M1/1015 , A61M1/1036 , A61M1/1086 , A61M2205/3334 , F04D1/00 , F04D13/024 , F04D13/026 , F04D13/06 , F04D13/064 , F04D15/0027 , F04D25/026 , F04D27/002 , F04D29/041 , F04D29/042 , F04D29/22 , F04D29/605
Abstract: A pump drive for an extracorporeal blood pumping system including an adjustable drive magnet. The pump drive may be coupled to a blood pump which includes a pump impeller. The pump drive may include a stepper motor for dynamically adjusting the position of the drive magnet. The position of the drive magnet may be varied to vary the distance between the drive magnet and an impeller magnet of the pump impeller. Adjusting the position of the drive magnet may include dynamically adjusting the drive magnet and may include axially moving the drive magnet to thereby vary a magnetic attraction force between the drive magnet and the impeller magnet which may thereby minimize forces acting on one or more bearings of a pump impeller.
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公开(公告)号：US09943630B2
公开(公告)日：2018-04-17
申请号：US15392847
申请日：2016-12-28
Applicant: HeartWare, Inc.
Inventor： Mustafa Ertan Taskin
IPC: A61M1/10 , A61M1/12 , F04D29/041 , F04D29/18
CPC classification number: A61M1/122 , A61M1/101 , A61M1/1012 , A61M1/1017 , A61M1/1031 , A61M1/1036 , F04D29/0413 , F04D29/181
Abstract: A rotor for an axial-flow blood pump has blades projecting outwardly from a hub and channels between the blades. The blades incorporate hydrodynamic bearing surfaces capable of suspending the rotor during operation. The rotor has a configuration which provides superior pumping action and reduced shear of blood passing through the pump. The forwardly facing pressure surfaces of the blades may include outflow corner surface at their downstream ends. The outflow corner surfaces desirably slope rearwardly and intersect the rearwardly-facing suction surfaces of the blades at outflow ends of the blades.
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Patent Agency Ranking
公开(公告)号：US20180085507A1
公开(公告)日：2018-03-29
申请号：US15710323
申请日：2017-09-20
Applicant: HEARTWARE, INC.
Inventor： Fernando CASAS , Carlos REYES , Justin WOLMAN
CPC classification number: A61M1/1086 , A61M1/1008 , A61M1/101 , A61M1/1036 , A61M1/1053 , A61M1/122 , A61M1/127
Abstract: A ventricular assist device includes a pump configured to pump blood of a patient. A motor is configured to operate the pump. First, second, and third conductors are coupled to the motor and are configured to supply electric current from a power supply to the motor in first, second, and third phases, respectively. A controller is configured to operate the motor using a Field Oriented Control (FOC) method, and if one from the group consisting of first, second and third conductors becomes unable to supply electric current to the motor, the controller continues to operate the motor using the FOC method using the phases of the two conductors that are able to supply electric current to the motor.
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公开(公告)号：US20180028734A1
公开(公告)日：2018-02-01
申请号：US15669520
申请日：2017-08-04
Applicant: HeartWare, Inc.
Inventor： Jeffrey A. LAROSE , Charles R. SHAMBAUGH , Kartikeyan TRICHI , Richard A. MARQUIS , Daniel G. White
CPC classification number: A61M1/1036 , A61M1/1008 , A61M1/101 , A61M1/1012 , A61M1/1015 , A61M1/1017 , A61M1/1029 , A61M1/1031 , A61M1/1086 , A61M1/122 , A61M1/125 , F04D3/02 , F04D29/0476
Abstract: An axial-flow blood pump for pumping blood includes a substantially cylindrical outer enclosure. A tubular housing concentric with and located within the outer enclosure has at one end an inlet and at an opposite end an outlet. A motor stator is concentric with and located between the outer enclosure and the tubular housing. An impeller is concentric with and located within the tubular housing. The impeller is suspended in operation by a combination of passive magnetic forces between magnets within the impeller or magnetized regions of the impeller and the motor stator and hydrodynamic thrust forces generated as blood flows between the tubular housing and a plurality of hydrodynamic thrust bearing surfaces located on the impeller. A volute may be in fluid-tight connection with the outlet of the tubular housing for receiving blood in the axial direction and directing blood in a direction normal to the axial direction. The volute has a flow-improving member extending axially from the volute and into and coaxially with the tubular housing.
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公开(公告)号：US20180001005A1
公开(公告)日：2018-01-04
申请号：US15630373
申请日：2017-06-22
Applicant: HeartWare, Inc.
Inventor： Fernando CASAS
CPC classification number: A61M1/1086 , A61M1/1036 , A61M1/122 , A61M2230/005 , A61M2230/04 , A61M2230/30
Abstract: A signal processing circuit for controlling operation of an implanted ventricular assist device comprising an input module for receiving one or more signals of a patient from one or more sensors. A processor for processing the received signals is included, the processor configured to compare a total blood output on a left side of the patient's heart with a total blood output on a right side of the patient's heart; determine at least one from the group consisting of the presence of fluid imbalance between the left and right sides of the patient's heart and the absence of fluid imbalance between the left and right sides of the patient's heart based on the comparison; and when the presence of fluid imbalance is determined, control the implanted ventricular device to restore fluid balance between the left and right sides of the patient's heart.
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公开(公告)号：US09827357B2
公开(公告)日：2017-11-28
申请号：US14362452
申请日：2012-12-03
Inventor： Mark D. Rodefeld
CPC classification number: A61M1/1036 , A61M1/1008 , A61M1/101 , A61M1/1012 , A61M1/1015 , A61M1/1017 , A61M1/1029 , A61M1/1031 , A61M1/1086 , A61M1/122 , A61M1/125 , A61M1/127
Abstract: A bearingless and sealless rotary blood pump is disclosed which provides multidirectional flow intended to provide low-pressure, high-volume right-sided partial assist circulatory support in a univentricular Fontan circulation on a permanent basis. The pump includes a housing and an impeller suspended in the center of the housing. The housing incorporates flow optimization features between inlet and outlet ends, as well as with the impeller surface. Large fluid gaps maintained between impeller and housing eliminate any potential for blood flow obstruction. The impeller contains some motor components. It includes a central stator and surrounding rotor. The motor includes a brushless DC outrunner electrical motor design. An electromagnetic stator core is surrounded by a circumferential passive magnetic ring. The rotor is further levitated about the stator spindle by a plurality of axially and radially located passive magnetic and hydrodynamic journal bearings on both ends of the spindle. The rotor is bearingless and sealless. During impeller rotation, blood entering the space between the rotor and stator is induced to flow by centrifugal pumping action and the fluid film separates the stator hydrodynamic bearings from the rotor so that there is no direct mechanical contact between the rotor and stator.
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公开(公告)号：US20170246365A1
公开(公告)日：2017-08-31
申请号：US15594373
申请日：2017-05-12
Applicant: TC1 LLC
Inventor： Kevin Bourque
CPC classification number: A61M1/1036 , A61M1/1008 , A61M1/101 , A61M1/1012 , A61M1/1015 , A61M1/1029 , A61M1/1031 , A61M1/1086 , A61M1/122 , A61M1/127 , A61M2205/3365 , F04D13/0606 , F04D13/0633 , F04D13/064 , F04D13/0646 , F04D29/048 , Y10T29/49009
Abstract: A method for assisting blood circulation in a patient includes drawing a flow of blood from a patient's heart into a blood flow channel formed by a housing. The flow of blood is passed through a motor stator to a rotor disposed within the blood flow channel. The motor stator is arranged circumferentially around the blood flow channel. The rotor has permanent magnetic poles for magnetic levitation and rotation of the rotor. The motor stator is controlled to act as a radial bearing for magnetic levitation of the rotor and to rotate the rotor within the blood flow channel. The rotor is levitated within the blood flow channel in the direction of the rotor axis of rotation via passive magnetic interaction between the rotor and the motor stator. The flow of blood is output from the blood flow channel to the patient.
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