Patents by Inventor Richard A. Marquis
Richard A. Marquis 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: 8790236Abstract: 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: June 2, 2006Date of Patent: July 29, 2014Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Richard A. Marquis, Daniel G. White, Palanivelu Thyagarajan
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Publication number: 20140148638Abstract: 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: February 3, 2014Publication date: May 29, 2014Applicant: HEARTWARE, INC.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Daniel G. White, Richard A. Marquis, Steven A. 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: 8641594Abstract: 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, 2011Date of Patent: February 4, 2014Assignee: Heartware, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Daniel G. White, Richard A. Marquis, Steven A. White, Palanivelu Thyagarajan
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Patent number: 8628459Abstract: 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: June 2, 2006Date of Patent: January 14, 2014Assignee: HeartWare, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Richard A. Marquis, Daniel G. White, Palanivelu Thyagarajan
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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
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Patent number: 8007254Abstract: 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: June 2, 2006Date of Patent: August 30, 2011Assignee: Heartware, Inc.Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Kartikeyan Trichi, Richard A. Marquis, Daniel G. White
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Publication number: 20100069847Abstract: 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: June 2, 2006Publication date: March 18, 2010Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, JR., Richard A. Marquis, Daniel G. White, Kartikeyan Trichi, Palanivelu Thyagarajan
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Publication number: 20090112312Abstract: 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: February 26, 2008Publication date: April 30, 2009Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, JR., Daniel G. White, Richard A. Marquis, Steven A. White, Kartikeyan Trichi
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Patent number: 7331474Abstract: A magnetically-attractive specimen-container rack for use with a magnetic transport system for transporting racks of specimen-containers to or within an automated clinical instrument for analysis and/or processing. The specimen-container rack comprises a pair of U-shaped magnetically-attractive members mounted in the base section of the rack housing so that the distal ends of such members extend towards the base of the rack and terminate in a plane slightly short of the plane in which the rack is supported for movement atop a rack-supporting surface. Such members are adapted to cooperate with similarly-shaped permanent magnets carried by an X/Y-movable truck that underlies a non-magnetic rack-supporting plate.Type: GrantFiled: March 5, 2004Date of Patent: February 19, 2008Assignee: Beckman Coulter, Inc.Inventors: Craig R. Veiner, Frank M. Tappen, Roberto Del Valle, Richard A. Marquis
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Publication number: 20070134993Abstract: A connector for connecting an implant device to tissue of a person's body. The connector including a frame having first and second arms. The first and second arms define an opening, where at least a portion of the implant device is inserted through the opening. After insertion, an additional securing member is connected to the frame. The securing member is adapted to receive at least one suture to secure the frame to the tissue. The connector includes an adjuster that is movably connected to the first and second arms, where the adjuster is operable to cause the first and second arms to move toward each other and engage the implant device.Type: ApplicationFiled: December 8, 2005Publication date: June 14, 2007Inventors: Daniel Tamez, Vitrote Indravudh, Richard Marquis, Charles Shambaugh, Jeffrey LaRose
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Publication number: 20070100196Abstract: 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: June 2, 2006Publication date: May 3, 2007Inventors: Jeffrey LaRose, Charles Shambaugh, Kartikeyan Trichi, Richard Marquis, Daniel White
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Publication number: 20050194333Abstract: A magnetically-attractive specimen-container rack for use with a magnetic transport system for transporting racks of specimen-containers to or within an automated clinical instrument for analysis and/or processing. The specimen-container rack comprises a pair of U-shaped magnetically-attractive members mounted in the base section of the rack housing so that the distal ends of such members extend towards the base of the rack and terminate in a plane slightly short of the plane in which the rack is supported for movement atop a rack-supporting surface. Such members are adapted to cooperate with similarly-shaped permanent magnets carried by an X/Y-movable truck that underlies a non-magnetic rack-supporting plate.Type: ApplicationFiled: March 5, 2004Publication date: September 8, 2005Applicant: Beckman Coulter, Inc.Inventors: Craig Veiner, Frank Tappen, Roberto Del Valle, Richard Marquis
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Patent number: 6779654Abstract: A shotgun shell housing assembly comprising a container adapted to hold stacked shells and a cover adapted to receive the container. The container is adapted to permit stacking of shells in a common configuration similar to that used for factory loaded ammunitions. To facilitate stacking of the shells, the container can be held at an angle by a removable stand. The container with stacked shells is received by the cover and retained by a latching mechanism to form an enclosed housing that stores the shells. To access the shells, the container is removed so as to transfer the shells from the container into the cover. The cover is dimensioned to fit into many products designed to hold paper cartons holding factory loaded shotgun shells. The shotgun shell housing assembly is preferably formed from a resilient material so as to permit repeated use.Type: GrantFiled: January 31, 2002Date of Patent: August 24, 2004Assignee: Reloader Innovations a PartnershipInventor: Donald Richard Marquis
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Patent number: 6363802Abstract: Apparatus for precisely aspirating small volumes of liquid, e.g., a blood sample, contained in a vessel, e.g., a test tube or vial, includes a mechanism for sensing that the tip of an aspirating probe is contacting the bottom of the vessel during the aspiration process. Such a bottom-sensing mechanism is adapted to sense a predetermined forcible interaction between the probe tip and the vessel bottom. In a preferred embodiment, such forcible interaction is sensed by detecting movement of a movably mounted platform that supports the vessel during aspiration. In a second embodiment, the forcible interaction is sensed by detecting the back-emf in a motor winding used to advance the aspiration probe.Type: GrantFiled: March 25, 1999Date of Patent: April 2, 2002Assignee: Coulter International Corp.Inventors: Paul M. Grippo, Richard A. Marquis, Marco Zuleta, Christopher J. Falvai