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| Number | Title | Issue Date |
| 7343002 | Bearing assembly A bearing assembly suitable for use in conjunction with x-ray device having a rotating target anode and electron source disposed in an evacuated enclosure. The bearing assembly includes a shaft having a rotor hub to which the anode is mounted. The shaft cooperates w... | 03/11/2008 |
| 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 |
| 7264606 | Circulatory support system A method for providing at least partial bypass of the heart to supplement the pumping function of the heart to thereby enable the surgeon to perform various surgical procedures thereon includes providing a circulatory assist system having a portable extracorporeal a... | 09/04/2007 |
| 7229258 | Streamlined unobstructed one-pass axial-flow pump A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings (passive permanent and active electromagnetic) having impeller magnets on the impeller and stator magnets or coils/poles on the... | 06/12/2007 |
| 7144365 | Implantable heart assist system and method of applying same An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and method of using same. One embodiment of the extracardiac system comprises a pump ... | 12/05/2006 |
| 7125376 | Implantable heart assist system and method of applying same An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and methods of using same. One embodiment of the intravascular extracardiac system co... | 10/24/2006 |
| 7070398 | Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings including an axial bearing to support the impeller axially in the cavity. The axial bearing includes adjacent impeller magnets ... | 07/04/2006 |
| 6974436 | Integrated pump and cannula system and related methods The present invention relates to systems and methods for transporting fluid between different locations within a body cavity and, in one particular application, systems and methods for transporting fluids to maintain at least partial blood flow through a protected b... | 12/13/2005 |
| 6861778 | System for passive and stable suspension of a rotor in rotor/stator assemblies A rotary mechanism includes a stator body defining a chamber and an elongated rotor operationally disposed within the chamber. The elongated rotor has opposed ends with a central axis defining an axis of rotation, with magnetic driven elements disposed on the rotor ... | 03/01/2005 |
| 6716157 | Magnetic suspension blood pump An implantable magnetic suspension blood pump having a rotor magnetically suspended and having blood flow gaps at the axial ends of the rotor so that blood in the gaps is washed out by flow in a conduit along the axis of the rotor connecting the fluid gaps. The bloo... | 04/06/2004 |
| 6576010 | Circular artificial heart An artificial heart device for minimizing the damage to blood cells having electromagnetically driven pistons which move the blood around and through a toroidal chamber. In first and second preferred embodiments no motor is used to drive the pistons and t... | 06/10/2003 |
| 6527699 | Magnetic suspension blood pump This invention is a non-contact axial flow turbo blood pump for propelling blood, which is composed of a pump housing (24) that defines a pump axis, with inlet, outlet openings at opposite axial ends of the pump housing, a rotor unit (17) that defines a r... | 03/04/2003 |
| 6375607 | Magnetically suspended fluid pump and control system A blood pump for assisting a heart is provided having a stator and a rotor. The rotor is magnetically radially supported creating a suspension gap between the stator and the rotor. The rotor can be supported axially by a Lorentz force bearing and can be m... | 04/23/2002 |
| 6363276 | Magnetically suspended fluid pump and control system with defibrillator A blood pump for assisting a heart is provided having a stator and a rotor. The rotor is magnetically radially supported creating a suspension gap between the stator and the rotor. The rotor can be supported axially by a Lorentz force bearing and can be m... | 03/26/2002 |
| 6293901 | Magnetically suspended fluid pump and control system A blood pump for assisting a heart is provided by a stator and a rotor. The rotor is magnetically supported creating a suspension gap between the stator and the rotor. The rotor can be supported axially by a Lorentz force bearing and can be magnetically r... | 09/25/2001 |
| 6120537 | Sealless blood pump with means for avoiding thrombus formation A blood pump comprising: a pump housing, and a rotor mounted for rotation within the housing. The rotor has a rotational axis and an attached impeller. The blood pump has a blood flow path that passes about the rotor, with the rotor having a peripheral ed... | 09/19/2000 |
| 6083260 | Reverse flow transport pump and organ stabilization apparatus including related methods A reverse flow pump for transporting bodily fluids comprising an outer pump housing formed with concentric inner and outer passageways, a rotatedly fixed rotor positioned within the pump housing, and an interior compartment surrounding at least a portion ... | 07/04/2000 |
| 5947892 | Rotary blood pump A blood pump that comprises a pump housing having a blood flow path therethrough, a blood inlet, and a blood outlet; a stator mounted to the pump housing, the stator having a stator field winding for producing a stator magnetic field; a flow straightener ... | 09/07/1999 |
| 5443503 | Artificial heart pump An artificial heart pump comprises a cylindrical stator provided between the inner surface of a casing and a rotor so as to establish a blood flow channel between the outer surface of the stator and the inner surface of the casing, and a rotating magnet a... | 08/22/1995 |
| 5385581 | Magnetically suspended and rotated rotor The impellor of a blood pump is supported by permanent magnets on the impellor and pump housing and stabilized by an electromagnet on the housing. A control circuit supplies current to the electromagnet to maintain the axial position of the impellor at a ... | 01/31/1995 |
| 5344443 | Heart pump A heart pump having a housing with a central longitudinal axis, inlet means and an outlet means is disclosed. A stationary shaft extends axially within the housing and the means are provided for supporting the shaft centrally located within the housing. A... | 09/06/1994 |
| 5326344 | Magnetically suspended and rotated rotor The impellor of a blood pump is supported by permanent magnets on the impellor and pump housing and stabilized by an electromagnet on the housing. A control circuit supplies current to the electromagnet to maintain the axial position of the impellor at a ... | 07/05/1994 |
| 5078741 | Magnetically suspended and rotated rotor The impellor of a blood pump is supported by permanent magnets on the impellor and pump housing and stabilized by an electromagnet on the housing. A control circuit supplies current to the electromagnet to maintain the axial position of the impellor at a ... | 01/07/1992 |
| 5055005 | Fluid pump with levitated impeller A fluid pump with rotary impeller is disclosed which comprises an electromagnetically driven rotary impeller levitated by localized opposed fluid forces. Levitation by localized opposed fluid forces of an impeller driven by electromagnetic forces eliminat... | 10/08/1991 |
| 4994078 | Intraventricular artificial hearts and methods of their surgical implantation and use A method of treating heart failure is disclosed in which, without removing the damaged heart, implantation of prosthetic blood-pumping means within the natural heart sustains its function. The invention includes electrically-powered positive displacement ... | 02/19/1991 |
| 4957504 | Implantable blood pump An implantable blood pump (10) for providing either continuous or pulsatile blood flow to the heart. The pump includes a stator (16) having a cylindrical opening (14), an annular array (36 or 38) of electromagnets (40, 42) carried by the stator concentric... | 09/18/1990 |
| 4944748 | Magnetically suspended and rotated rotor The impellor of a blood pump is supported by permanent magnets on the impellor and pump housing and stabilized by an electromagnet on the housing. A control circuit supplies current to the electromagnet to maintain the axial position of the impellor at a ... | 07/31/1990 |
| 4927407 | Cardiac assist pump with steady rate supply of fluid lubricant A centrifugal pump for left ventricle assist includes a pump housing forming an impeller chamber with inlet and outlet passages and enclosing an impeller rotatable to move blood through the impeller chamber, and a rotor chamber enclosing a rotor integral ... | 05/22/1990 |
| 4908012 | Chronic ventricular assist system An implantable ventricular assist system uses a small high-speed axial flow blood pump which may be grafted into the patient's circulatory system. The pump includes a blood tube in which the pump rotor and stator are coaxially contained, and a motor stato... | 03/13/1990 |
| 4846152 | Single-stage axial flow blood pump A miniature high-speed intravascular blood pump is formed as a single stage with two rows of rotor blades and a single row of stator blades within a tubular housing. The rotor's first row produces a mixed centrifugal and axial flow, while the rotor's seco... | 07/11/1989 |
| 4779614 | Magnetically suspended rotor axial flow blood pump An implantable axial flow blood pump maximizes the blood flow while minimizing the dimensions of the pump. By magnetically suspending a rotor of relatively small diameter coaxially in a cylindrical blood conduit of substantially larger inner diameter, an ... | 10/25/1988 |
| 4763032 | Magnetic rotor bearing The present invention provides a magnetic rotor bearing for suspending a rotor in a contact-free manner, in particular the rotor of an axial- or radial-centrifugal blood pump, comprising a permanent- and electromagnet arrangement which stabilizes the posi... | 08/09/1988 |
| 4688998 | Magnetically suspended and rotated impellor pump apparatus and method A novel pump apparatus and method, the pump including a magnetically suspended and rotated impellor inside the pump housing. A novel sensor system detects the position of the impellor and thus provides the necessary information for operation of a suspensi... | 08/25/1987 |
| 4382199 | Hydrodynamic bearing system for a brushless DC motor A hydrodynamic bearing system for a motor. The motor is illustrated and described as driving a pump for an artificial heart. The motor stator has a cylindrical bore which is closed at one end. The rotor is slidable and rotatable in the bore. The rotor has... | 05/03/1983 |
