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| Number | Title | Issue Date |
| 7396327 | Blood pump system and method of operation A blood pump system includes a blood pump having a motor with a rotor and a stator. The stator has a plurality of stator windings situated therein. A motor controller is coupled to the motor, and a processor has inputs coupled to the motor controller for receiving a... | 07/08/2008 |
| 7284956 | Methods and apparatus for controlling a continuous flow rotary blood pump A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump ... | 10/23/2007 |
| 7210898 | Gas removal from a centrifugal pump A centrifugal pump includes a system that removes gas that accumulates along the axis of rotation of the shaft and/or impeller of the pump. One or more vent inlets are placed in the region where the gas accumulates and a suction device draws the accumulated gas thro... | 05/01/2007 |
| 7033132 | Bladeless pump A pump which is bladeless, and uses a substantially cylindrical outer cylinder to rotate inside a ridged inner chamber. ... | 04/25/2006 |
| 6976996 | Transport pump and organ stabilization apparatus including related methods A surgical pump suitable for bodily fluids, normally blood, usable in the course of surgical interventions as an alternative to the traditional CPB (cardio pulmonary bypass) making use of external blood pumps. It consists of an intake cannula (20) which is in... | 12/20/2005 |
| 6966748 | Rotary pump with exclusively hydrodynamically suspended impeller A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrody... | 11/22/2005 |
| 6908280 | Blood pump The blood pump of the present invention comprises: a first casing (1), its rim forming an opening; a second casing (2) having an inlet opening at the top and an outlet opening at an arbitrary position... | 06/21/2005 |
| 6858001 | Single port cardiac support apparatus A minimal intrusive cardiac support apparatus is disclosed which requires only one incision into a main blood vessel or heart chamber. The apparatus includes a pair of generally coaxial and slideably arranged cannulae (one inner and one outer) communicatively couple... | 02/22/2005 |
| 6817836 | Methods and apparatus for controlling a continuous flow rotary blood pump A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump ... | 11/16/2004 |
| 6769871 | Blood pump and ventricular assist device The blood pump according to the present invention comprises a casing having a blood inlet and a blood outlet, and an impeller for circulating blood by rotating inside the casing, wherein both the casing's and the impeller's surfaces in contact with blood are formed ... | 08/03/2004 |
| 6761532 | Touch down of blood pump impellers A blood pump having rotor and/or stator touch down zones to prevent pump failure or hemolysis which can occur if the rotor comes into contact with the stator due to power failure or mechanical shock. The touch down zones can include forming, or coating, portions of ... | 07/13/2004 |
| 6752602 | Blood pump The invention concerns a blood pump, in particular a ventricular cardiac support pump, with formed in a pump housing a blood chamber which is designed to hold a rotor rotatable about a rotor axis and at opposite ends in sections forms an inlet connectable with an in... | 06/22/2004 |
| 6746416 | Duplex blood pump for heart surgery A two-chambered centrifugal blood pump for pumping biological fluids such as blood. One chamber is for pumping blood through the natural lungs, and a second chamber is for pumping blood through the remainder of the body. Each chamber has it's own inlet and outlet po... | 06/08/2004 |
| 6719791 | Device for the axial transport of fluid media The invention provides a device for the axial delivery of fluidal mediums, which outer diameter is not or only insignificantly larger than the diameter of the fluid carrying pipe, which reduces to a large extent a shearing and vortexing of the fluid. A device for th... | 04/13/2004 |
| 6688861 | Sealless rotary blood pump An implantable rotary sealless blood pump is provided. The pump includes a housing having an inlet tube on one end and an impeller casing on the other end. A rotor is mounted for rotation within the housing, with the rotor having an elongated shaft portio... | 02/10/2004 |
| 6638011 | Rotary pump with exclusively hydrodynamically suspended impeller A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrodynamically suspend... | 10/28/2003 |
| 6626644 | Magnetically levitated pump and controlling circuit An impeller has one surface with a soft magnetic member arranged closer to an inner diameter thereof, opposite an electromagnet, the impeller is provided with a permanent magnet arranged closer to an outer diameter thereof, opposite a permanent magnet of ... | 09/30/2003 |
| 6609883 | Rotary pump with hydrodynamically suspended impeller This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blade... | 08/26/2003 |
| 6595762 | Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method An apparatus and method for a centrifugal fluid pump for pumping sensitive biological fluids, which includes (i) an integral impeller and rotor which is entirely supported by an integral combination of permanent magnets and electromagnetic bearings and ro... | 07/22/2003 |
| 6547530 | Fluid pump apparatus There is provided a fluid pump wherein in a casing at a pump unit there is provided an impeller coupled with a rotor contactless and also supported contactless by a controlled magnetic bearing unit, and rotated by a motor to output a fluid, with a positio... | 04/15/2003 |
| 6547539 | Pump assembly with bearing and seal-free reusable impeller for fragile and aggressive fluids 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 hous... | 04/15/2003 |
| 6537315 | Auxiliary artificial heart of an embedded type An artificial heart has a driving section, a nozzle section, a pump section for insertion into a ventricle of a human heart, and a sealing section forming a seal for a driving shaft extending from the driving section for driving the pump section. A sealin... | 03/25/2003 |
| 6527521 | Magnetically driven axial-flow pump A magnetically driven, axial flow pump comprises an electromagnetic unit arranged about the periphery of a pipe. A cylindrical rotor is accommodated within the pipe and is equipped with permanent magnets mounted on the periphery. A spiral, hollow vane is ... | 03/04/2003 |
| 6468041 | Magnetically levitated apparatus There is provided a magnetically levitated apparatus wherein an impeller has one side supported by an electromagnet and the other side supported and magnetically levitated by an attractive force created between a permanent magnet and a permanent magnet of... | 10/22/2002 |
| 6447265 | Magnetically suspended miniature fluid pump and method of designing the same A rotary pump for pumping fluids through a patient having a housing with an internal region, a stator member and an impeller positioned within the housing and having impeller blades, wherein the impeller is magnetically suspended and rotated, and wherein ... | 09/10/2002 |
| 6439845 | Blood pump A blood pump includes a centrifugal impeller for pumping blood and a volute member enclosing the centrifugal impeller within a volute chamber. A magnetic drive causes magnets embedded on the impeller to rotate the impeller. The centrifugal impeller and vo... | 08/27/2002 |
| 6394769 | Pump having a magnetically suspended rotor with one active control axis An inventive blood pump in accordance with this invention includes a housing that has inlet and outlet ports for receiving and discharging blood. A rotor is positioned in the housing's interior for pumping blood between the housing's inlet and outlet port... | 05/28/2002 |
| 6387125 | Auxiliary artificial heart of an embedded type An artificial heart has a driving section, a nozzle section, a pump section for insertion into a ventricle of a human heart, and a sealing section forming a seal for a driving shaft extending from the driving section for driving the pump section. A sealin... | 05/14/2002 |
| 6368083 | Sealless rotary blood pump An implantable rotary sealless blood pump includes a housing having an inlet tube on one end and an impeller casing on the other end. A rotor is mounted for rotation within the housing, with the rotor having an elongated shaft portion and an impeller atta... | 04/09/2002 |
| 6346120 | Auxiliary artificial heart of an embedded type An artificial heart has a driving section, a nozzle section, a pump section for insertion into a ventricle of a human heart, and a sealing section forming a seal for a driving shaft extending from the driving section for driving the pump section. A sealin... | 02/12/2002 |
| 6302910 | Auxiliary artificial heart of an embedded type An artificial heart has a driving section, a nozzle section, a pump section for insertion into a ventricle of a human heart, and a sealing section forming a seal for a driving shaft extending from the driving section for driving the pump section. A sealin... | 10/16/2001 |
| 6302661 | Electromagnetically suspended and rotated centrifugal pumping apparatus and method An apparatus and method for a centrifugal pump for pumping sensitive biological fluids which includes (i) an integral impeller and rotor which is electromagnetically supported and rotated, (ii) a pump housing and arcuate passages for fluid flow and contai... | 10/16/2001 |
| 6293752 | Junction for shears sensitive biological fluid paths A biological fluid transport device comprises a cutwater at the junction of at least two blood flow paths. The cutwater is substantially straight, substantially vertical, or both. At least one of the fluid paths may be tubular, and in some embodiments all... | 09/25/2001 |
| 6250880 | Rotary pump with exclusively hydrodynamically suspended impeller A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrodynamically suspend... | 06/26/2001 |
| 6247892 | Continuous flow rotary pump A continuous flow axial-flow pump for impelling a fluid under a continuous pattern without kinetic side effects to minimize and eliminate damage to fluid, the pump comprising two axial adjacent rotors rotating in opposite directions.... | 06/19/2001 |
| 6244835 | Blood pump having a magnetically suspended rotor A blood pump preferably has a magnetically suspended rotor that rotates within a housing. The rotor may rotate about a stator disposed within the housing. Radial magnetic bearings may be defined within the stator and the rotor in order to suspend the roto... | 06/12/2001 |
| 6234772 | Rotary blood pump An implantable rotary sealless blood pump is provided. The pump can include hydrodynamic, magnetic and hybrid, hydrodynamic/magnetic bearings and combinations thereof. The rotor can include a shaft or the pump can be made shaftless. Close clearances may b... | 05/22/2001 |
| 6227797 | Rotary pump with hydrodynamically suspended impeller This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blade... | 05/08/2001 |
| 6217541 | Blood pump using cross-flow principles A blood pump is provided which comprises a cross-flow pump head having an elongated generally cylindrical housing portion. The housing portion defines a blood inlet port on a surface thereof and a blood outlet port on an opposite surface thereof. An impel... | 04/17/2001 |
| 6206659 | Magnetically driven rotor for blood pump 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 transverse... | 03/27/2001 |
