Thoratec Corporation

University of Technology Sydney

Ventrassist Pty Ltd.

Other

Nottingham University Hospitals Nhs Trust

University of Technology

Ventrassist Pty Ltd and University of Technology

Geoffrey Douglas Tansley

John Campbell Woodard

Peter Andrew Watterson

Peter Joseph Ayre

Peter Andew Watterson

Martin Christopher Cook

David Richens

There is provided a pulsatile blood pump () for implantation into a patient. The pulsatile blood pump comprises a substantially tubular body () a flexible membrane () and a port (). The substantially tubular body is for replacing a resected portion of a blood vessel of the patient. The substantially tubular body has first and second ends with a blood passageway extending therebetween for the passage of blood. The flexible membrane is attached to the tubular body so as to form a fluid chamber between the flexible membrane and an inner surface of the tubular body. The flexible membrane thereby separates the fluid chamber from the blood passageway. The tubular body comprises the port. The port is arranged to allow fluid to flow into and out of the fluid chamber such that the volume of the fluid chamber increases and the volume of the blood passageway decreases when fluid flows into the fluid chamber via the port, and such that the volume of the fluid chamber decreases and the volume of the blood passageway increases when fluid flows out of the fluid chamber via the port. The blood pump is thereby enabled to pump blood along the blood passageway.

Pulsatile blood pump

A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.

Rotary blood pump and control system therefor

An axial flow rotary blood pump including an impeller adapted to be magnetically rotated within a housing by the interaction of magnets disposed on or in the impeller and stators disposed on or in the housing. The impeller includes at least one support ring supporting a plurality of blades, and a hydrodynamic bearing that operates at least axially and radially in respect of an axis of rotation of the impeller.

Axial flow blood pump

A pump assemblyadapted for continuous flow pumping of blood. In a particular from the pumpis a centrifugal pump wherein the impelleris entirely sealed within the pump housingand is exclusively hydrodynamically suspended therein as the impeller rotates within the fluidurged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impellerhaving deformities therein such as bladeswith surfaces tapered from the leading edgesto the trailing edgesof bottom and top edgesthereof.

Rotary pump with hydrodynamically suspended impeller

A pump assembly adapted for continuous flow pumping of blood. In a particular form the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is hydrodynamically suspended therein as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top edges thereof.

An axial flow rotary blood pump including an impeller () adapted to be magnetically rotated within a housing by the interaction of magnets disposed on or in the impeller and stators disposed on or in the housing. The impeller includes at least one support ring () supporting a plurality of blades (), and a hydrodynamic bearing () that operates at least axially and radially in respect of an axis of rotation of the impeller ().

A pump assemblyadapted for continuous flow pumping of blood. In a particular form the pumpis a centrifugal pump wherein the impelleris entirely sealed within the pump housingand is exclusively hydrodynamically suspended therein as the impeller rotates within the fluidurged by electromagnetic means external to the pump cavity Hydrodynamic suspension is assisted by the impellerhaving deformities therein such as bladeswith surfaces tapered from the leading edgesto the trailing edgesof bottom and top edgesthereof.

Rotary pump with exclusively 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 blades with the edges of the blades used as hydrodynamic thrust bearings and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.

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 blades with the edges of the blades used as hydrodynamic thrust bearing and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.

Growing community of inventors

Kegworth, United Kingdom

Geoffrey Douglas Tansley