Patents by Inventor Kartikeyan Trichi
Kartikeyan Trichi 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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Patent number: 10251985Abstract: 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.Type: GrantFiled: August 4, 2017Date of Patent: April 9, 2019Assignee: HeartWare, Inc.Inventors: Jeffrey A. Larose, Charles R. Shambaugh, Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Patent number: 10251986Abstract: 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.Type: GrantFiled: August 2, 2018Date of Patent: April 9, 2019Assignee: HeartWare, Inc.Inventors: Jeffrey A. Larose, Charles R. Shambaugh, Daniel G. White, Richard A. Marquis, Steven A. White, Kartikeyan Trichi
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Publication number: 20180339092Abstract: 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.Type: ApplicationFiled: August 2, 2018Publication date: November 29, 2018Inventors: Jeffrey A. LAROSE, Charles R. SHAMBAUGH, Daniel G. WHITE, Richard A. MARQUIS, Steven A. WHITE, Kartikeyan TRICHI
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Patent number: 10052421Abstract: 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.Type: GrantFiled: January 10, 2018Date of Patent: August 21, 2018Assignee: HeartWare, Inc.Inventors: Jeffrey A. Larose, Charles R. Shambaugh, Daniel G. White, Richard A. Marquis, Steven A. White, Kartikeyan Trichi
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Publication number: 20180126054Abstract: 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.Type: ApplicationFiled: January 10, 2018Publication date: May 10, 2018Inventors: Jeffrey A. LAROSE, Charles R. SHAMBAUGH, Daniel G. WHITE, Richard A. MARQUIS, Steven A. WHITE, Kartikeyan TRICHI
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Patent number: 9956332Abstract: 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.Type: GrantFiled: February 27, 2014Date of Patent: May 1, 2018Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Patent number: 9895476Abstract: 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.Type: GrantFiled: January 24, 2017Date of Patent: February 20, 2018Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Daniel G. White, Richard A. Marquis, Steven A. White, Kartikeyan Trichi
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Publication number: 20180028734Abstract: 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.Type: ApplicationFiled: August 4, 2017Publication date: February 1, 2018Inventors: Jeffrey A. LAROSE, Charles R. SHAMBAUGH, Kartikeyan TRICHI, Richard A. MARQUIS, Daniel G. White
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Patent number: 9737652Abstract: An axial-flow blood pump includes a housing having an inlet and an outlet opposite therefrom. An impeller located within the housing is suspended during operation by magnetic forces between magnets or magnetized regions of the impeller and a motor stator surrounding the housing, and hydrodynamic thrust forces generated by a flow of blood between the 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 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 the housing in a coaxial direction of the housing.Type: GrantFiled: May 10, 2016Date of Patent: August 22, 2017Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Publication number: 20170128647Abstract: 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.Type: ApplicationFiled: January 24, 2017Publication date: May 11, 2017Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Daniel G. White, Richard A. Marquis, Stephen A. White, Kartikeyan Trichi
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Patent number: 9579433Abstract: 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.Type: GrantFiled: February 3, 2014Date of Patent: February 28, 2017Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Daniel G. White, Richard A. Marquis, Steven A. White, Kartikeyan Trichi
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Publication number: 20160271308Abstract: An axial-flow blood pump includes a housing having an inlet and an outlet opposite therefrom. An impeller located within the housing is suspended during operation by magnetic forces between magnets or magnetized regions of the impeller and a motor stator surrounding the housing, and hydrodynamic thrust forces generated by a flow of blood between the 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 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 the housing in a coaxial direction of the housing.Type: ApplicationFiled: May 10, 2016Publication date: September 22, 2016Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, JR., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Patent number: 9339598Abstract: 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.Type: GrantFiled: July 10, 2014Date of Patent: May 17, 2016Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Publication number: 20150038769Abstract: 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.Type: ApplicationFiled: July 10, 2014Publication date: February 5, 2015Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, JR., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Publication number: 20150031936Abstract: 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.Type: ApplicationFiled: February 27, 2014Publication date: January 29, 2015Applicant: HEARTWARE, INC.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Patent number: 8668473Abstract: 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.Type: GrantFiled: August 17, 2011Date of Patent: March 11, 2014Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Patent number: 8419609Abstract: An impeller for a blood pump such as a magnetically driven, rotary ventricular assist device for pumping blood of a patient, the impeller being substantially entirely made of an alloy which consists essentially of about 70-80 weight percent of platinum and 20-30 weight percent of cobalt.Type: GrantFiled: October 5, 2005Date of Patent: April 16, 2013Assignee: Heartware Inc.Inventors: Charles R. Shambaugh, Jr., Kartikeyan Trichi, Jeffrey A. LaRose
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Patent number: 8152493Abstract: A rotary blood pump may include one or more motor stators overlying exterior surfaces of a wall defining a pumping chamber. A rotatable impeller within the pumping chamber may have a hydrodynamic thrust bearing surface adapted to constrain a position of the impeller along an axis of rotation relative to the wall when the impeller is rotating about the axis of rotation. The impeller position may then be constrained without requiring a constant polarity magnetic force to be applied in the axial direction from a fixed position of the housing.Type: GrantFiled: April 30, 2008Date of Patent: April 10, 2012Assignee: Hearthware Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Daniel G. White, Lisandro Rivera, Kartikeyan Trichi, Palanivelu Thyagarajan, legal representative
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Publication number: 20120029265Abstract: 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.Type: ApplicationFiled: August 2, 2011Publication date: February 2, 2012Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, JR., Daniel G. White, Richard A. Marquis, Steven A. White, Kartikeyan Trichi, Palanivelu Thyagarajan
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Publication number: 20110301403Abstract: 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.Type: ApplicationFiled: August 17, 2011Publication date: December 8, 2011Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, JR., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White