Patents Assigned to Advanced Bionics, Inc.
-
Patent number: 7052253Abstract: A novel fluid pump includes a stator body defining a pumping chamber and an impeller operationally disposed within the chamber. The impeller has opposed ends with a central axis defining an axis of rotation. Passive magnetic bearing sets are positioned along the impeller body with each bearing set being similarly polarized so as to be in mutually attracting or mutually repelling relationship. A third passive magnetic bearing set is positioned along the impeller axis between the opposed ends with the third bearing set being magnetically coupled similarly to the first and second bearing sets, with the passive magnetic bearings creating an unstable negative force in a plane perpendicular to the axis of rotation of the impeller with the negative stiffness being overcome upon rotation of the impeller creating a centrifugal force of a magnitude greater than that of the unstable negative force.Type: GrantFiled: May 19, 2003Date of Patent: May 30, 2006Assignee: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev
-
Patent number: 6547539Abstract: A pump for transferring fragile and aggressive fluids such as human blood, the pump comprising a housing with a sealed annular wall of uniform thickness forming a pumping chamber. The chamber is provided with inlet and outlet ports with a rotor being housed within the chamber coaxially of the housing. The housing includes opposed end cap portions with a cylindrical body portion interposed therebetween. The body portion includes first and second cylindrical segments with mating side walls adapted to be coupled together along an annular bonding seam, the arrangement providing for separation along the bonding seam to permit removal and reworking of the rotor for replacement in a fresh housing.Type: GrantFiled: May 21, 2001Date of Patent: April 15, 2003Assignee: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev
-
Publication number: 20020172608Abstract: A pump for transferring fragile and aggressive fluids such as human blood, the pump comprising a housing with a sealed annular wall of uniform thickness forming a pumping chamber. The chamber is provided with inlet and outlet ports with a rotor being housed within the chamber coaxially of the housing. The housing includes opposed end cap portions with a cylindrical body portion interposed therebetween. The body portion includes first and second cylindrical segments with mating side walls adapted to be coupled together along an annular bonding seam, the arrangement providing for separation along the bonding seam to permit removal and reworking of the rotor for replacement in a fresh housing.Type: ApplicationFiled: May 21, 2001Publication date: November 21, 2002Applicant: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev
-
Patent number: 6206659Abstract: A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on the chamber, and at least one outlet port arranged transversely and medially of the inlet ports. A rotor assembly is positioned within the pumping chamber having a core in the form of a first surface of revolution and having a dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. At least one shroud is provided spaced outwardly of the surface of the core, with medial vanes being positioned between the surface of the core and shroud, the shroud defining a second surface of revolution coaxially with the axis of the core. The rotor assembly includes magnets which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the rotor.Type: GrantFiled: July 1, 1997Date of Patent: March 27, 2001Assignee: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev
-
Patent number: 5938412Abstract: A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a fluid inlet port disposed on the chamber, and one or more outlet ports arranged transversely and medially of the inlet ports. A shrouded rotor is positioned within the pumping chamber having a core of dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. The shrouded rotor includes magnets which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the rotor. The sole support for the rotor are the hydrodynamic forces acting upon the rotor during its operation, with the rotor body having a relative density of between 10% and 90% of the relative density of the fluid being pumped.Type: GrantFiled: July 1, 1997Date of Patent: August 17, 1999Assignee: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev
-
Patent number: 5924848Abstract: A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on the chamber, and one or more outlet ports arranged transversely and medially of the inlet ports. A rotor is positioned within the pumping chamber having a dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. The rotor includes a plurality of radial vanes mounted on the outer surface of the dual cones forming the dual-conical configuration, and with the radially outward tips of the vanes encapsulating permanent magnets, with the vanes and permanent magnets being arranged at equally radially spaced locations. A magnetic drive is positioned to deliver rotational driving energy to the magnets in the rotor.Type: GrantFiled: July 1, 1997Date of Patent: July 20, 1999Assignee: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev
-
Patent number: 5685700Abstract: A pump for transferring fragile and aggressive liquids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on the chamber, and one or more outlet ports arranged transversely and medially of the inlet ports. A rotor is positioned within the pumping chamber having a dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. The rotor includes magnets which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the rotor. The sole support for the rotor are the hydrodynamic forces acting upon the rotor during its operation, with the rotor body having a relative density of between 10% and 90% of the relative density of the fluid being pumped.Type: GrantFiled: June 1, 1995Date of Patent: November 11, 1997Assignee: Advanced Bionics, Inc.Inventor: Valentin M. Izraelev