Leonard R Golding

US Patent:

20030139643, Jul 24, 2003

Filed:

Mar 3, 2003

Appl. No.:

10/378444

Inventors:

William Smith - Lyndhurst OH, US
Leonard Golding - Auburn Township OH, US

Assignee:

THE CLEVELAND CLINIC FOUNDATION

International Classification:

A61N001/362

US Classification:

600/016000

Abstract:

A system for pumping blood to assist or assume the cardiac function of a patient is characterized by a blood pump that exhibits a steep performance curve such that only small changes in pump flow occur for large changes in differential pressure across the pump. The pump therefore exhibits flow-limiting characteristics to protect the physiological system against harmful flow rates or pressures. Pump flow may also be limited by controlling the current provided to a driver from a power supply or by suitable restrictions within or external to the pump housing.

US Patent:

20040047753, Mar 11, 2004

Filed:

Jul 28, 2003

Appl. No.:

10/333760

Inventors:

David Horvath - Euclid OH, US
Leonard Golding - Auburn Township OH, US
William Smith - Lyndhurst OH, US

International Classification:

F04B017/00

US Classification:

417/423120, 417/423700, 415/900000

Abstract:

In a centrifugal flow blood pump, usable in left ventricular assist applications, blood is pumped from an inlet () to an outlet () by a primary impeller (). A portion of the blood that enters the pump follows a secondary channel () where a secondary impeller () routes the blood to lubricate a bearing between an impeller assembly () and a post formed by a component of the pump housing. The unique shape of the secondary impeller () prevents blood stagnation and provides for a well-washed fluid bearing.

US Patent:

20070253842, Nov 1, 2007

Filed:

Apr 24, 2007

Appl. No.:

11/789205

Inventors:

David Horvath - Euclid OH, US
Leonard A.R. Golding - Chagrin Falls OH, US
Alex Massiello - Chesterland OH, US

International Classification:

F04B 17/00

US Classification:

417350

Abstract:

A pump () includes a housing, a stator () supported in the housing, and a rotor assembly (). The rotor assembly () includes a rotor () supported in the housing for rotation relative to the stator () about an axis (). The rotor assembly () also includes a first impeller () operatively coupled to a first axial end of the rotor () for rotation with the rotor about the axis (). The rotor assembly further includes a second impeller () operatively coupled to a second axial end of the rotor (), opposite the first axial end, for rotation with the rotor about the axis (). The rotor assembly () is movable along the axis () relative to the housing to adjust hydraulic performance characteristics of the pump ().

US Patent:

20100168848, Jul 1, 2010

Filed:

Mar 10, 2010

Appl. No.:

12/720953

Inventors:

David Horvath - Euclid OH, US
Leonard A.R. Golding - Chagrin Falls OH, US
Alex Massiello - Chesterland OH, US

International Classification:

A61M 1/12
F04B 17/00

US Classification:

623 313, 4174231

Abstract:

A pump () includes a housing, a stator () supported in the housing, and a rotor assembly (). The rotor assembly () includes a rotor () supported in the housing for rotation relative to the stator () about an axis (). The rotor assembly () also includes a first impeller () operatively coupled to a first axial end of the rotor () for rotation with the rotor about the axis (). The rotor assembly further includes a second impeller () operatively coupled to a second axial end of the rotor (), opposite the first axial end, for rotation with the rotor about the axis (). The rotor assembly () is movable along the axis () relative to the housing to adjust hydraulic performance characteristics of the pump ().

US Patent:

20120328460, Dec 27, 2012

Filed:

Jul 2, 2012

Appl. No.:

13/540037

Inventors:

David Horvath - Euclid OH, US
Leonard A.R. Golding - Chagrin Falls OH, US
Alex Massiello - Chesterland OH, US
Barry Kuban - Avon Lake OH, US

International Classification:

F04D 13/06

US Classification:

417420

Abstract:

A pump includes a housing, a stator supported in the housing, and a rotor assembly including a rotor supported in the housing for rotation relative to the stator about an axis. The stator includes a stator core, a first lamination wound around an axial portion of the stator core, and a second lamination wound around a second axial portion of the stator core. The first and second laminations are spaced from each other along the length of the stator core. The rotor includes a rotor core, a first magnet assembly that extends around an axial portion of the rotor core, and a second magnet assembly that extends around a second axial portion of the rotor core. The first and second magnet assemblies are spaced from each other along the length of the rotor.

US Patent:

20180311426, Nov 1, 2018

Filed:

Oct 28, 2016

Appl. No.:

15/772154

Inventors:

- Cleveland OH, US
Leonard AR. Golding - Cleveland OH, US
Barry D. Kuban - Cleveland OH, US
Kiyotaka Fukamachi - Cleveland OH, US

International Classification:

A61M 1/12
A61M 1/10

Abstract:

A ventricular assist device includes a housing including a pumping chamber. A stator assembly is supported in the housing. The stator assembly includes a core having a length measured along a pump axis. A rotating assembly is rotatable relative to the stator assembly about the pump axis. The rotating assembly includes an impeller positioned in the pumping chamber and a rotor magnet. The rotating assembly is movable axially along the pump axis relative to the pump housing and the stator assembly. The rotating assembly includes a rotor magnet configured and arranged such that the magnetic attraction of the rotor magnet to the core urges the rotating assembly to move axially relative to the stator assembly such that a flow regulating portion of the rotating assembly engages with a corresponding portion of the housing to block flow through the pumping chamber when the pump is at rest.