James Lawrence Long
Engineers in Salt Lake City, UT

2010024, Sep 23, 2010

Jun 6, 2008

12/602914

Jim Lee - Benicia CA, US
James Malmstrom - Kaysville UT, US
James Long - Salt Lake City UT, US

A61M 1/10

623 327

There is disclosed apparatus and methods for providing a reserve power source for a ventricular assist device. In an embodiment, the apparatus includes a primary power source for powering the device, and a controller housing having a reserve battery for powering the device when the primary power source provides inadequate power, and the controller housing configured for use externally of the patient with a percutaneous cable to the device. In another embodiment, a method includes powering the device with a primary power source, monitoring power provided to the device, powering the device when the power is monitored as inadequate to the device with a reserve power source disposed within a controller housing, the device disposed subcutaneously within a patient, the controller housing disposed externally of the patient, and the device and the controller housing connected by a percutaneous cable. Other embodiments are also disclosed.

6595762, Jul 22, 2003

Oct 1, 2001

09/968690

Pratap S. Khanwilkar - Salt Lake City UT
Paul E. Allaire - Charlottesville VA
Gill B. Bearnson - Salt Lake City UT
Don B. Olsen - Salt Lake City UT
Eric H. Maslen - Earlysville VA
James W. Long - Holladay UT

MedQuest products, Inc. - Salt Lake CA
University of Virginia Patent Foundation - Charlottesville VA

F04B 17100

4174237, 417356, 417420, 415900

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 rotated by an integral motor, (ii) a pump housing and arcuate passages for fluid flow and containment, (iii) a brushless driving motor embedded and integral with the pump housing, (iv) a power supply, and (v) specific electronic sensing of impeller position, velocity or acceleration using a self-sensing method and physiological control algorithm for motor speed and pump performance based upon input from the electromagnetic bearing currents and motor back emf—all fitly joined together to provide efficient, durable and low maintenance pump operation. A specially designed impeller and pump housing provide the mechanism for transport and delivery of fluid through the pump to a pump output port with reduced fluid turbulence.

6394769, May 28, 2002

Jun 23, 2000

09/602471

Gill B. Bearnson - Salt Lake City UT
Pratap S. Khanwilkar - Salt Lake City UT
James W. Long - Holladay UT
Jed C. Ludlow - North Salt Lake UT
Brad E. Paden - Santa Barbara CA
Chen Chen - Santa Barbara CA
Dave B. Paden - Goleta CA
Don B. Olsen - Salt Lake City UT
James Antaki - Allison Park PA
Paul E. Allaire - Charlottesville VA
Michael Baloh - Charlottesville VA

Medquest Products, Inc. - Salt Lake City UT
University of Virginia Patent Foundation - Charlottesville VA

F04B 1700

4174237, 41742312, 417356, 415900

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 housings interior for pumping blood between the housings inlet and outlet ports, with the rotor being capable of motion in three translational and three rotational axes. An assembly for magnetically suspending and rotating the rotor in a contact-free manner with respect to the housing includes only one electromagnetic bearing that actively controls motion of the rotor with respect to one axis selected from the rotors three translational and three rotational axes, an electromagnetic motor that actively drives motion of the rotor with respect to one of its three rotational axes, and magnetic bearings for passively controlling motion of the rotor with respect to the remaining four of its translational and rotational axes. The inventive blood pump can also be incorporated into an artificial heart.

5282849, Feb 1, 1994

Dec 19, 1991

7/811455

Willem J. Kolff - Salt Lake City UT
Yvo M. Smulders - Amsterdam, NL
Paul D. Diegel - Sandy UT
James W. Long - Salt Lake City UT
Donald B. Olsen - Salt Lake City UT
John W. Holfert - Bountiful UT

University of Utah Research Foundation - Salt Lake City UT

A61M 110, A61M 1362, F04B 1700

623 3

A ventricle assist device for placement within a living body and including a self contained drive motor for generating pumping action with respect to a hydraulic pumping fluid. The ventricle assist device includes a ventricle having a blood chamber and a pumping chamber and an interconnect means coupled to the pumping chamber of the ventricle for receiving and displacing hydraulic fluid. A separate volume displacement chamber is attached to the interconnect means and provides a reservoir for excess hydraulic fluid for storage during diastole. A fluid pump and drive motor is positioned within the volume displacement chamber and connected at the interconnect means to supply the required pumping action for transfer of hydraulic fluid to and from the pumping chamber. Placement of the fluid pump and drive motor within the volume displacement chamber provides enhanced dissipation of heat from the energy conversion system and improved performance and durability.

8382830, Feb 26, 2013

Jun 6, 2008

12/602926

Tim Maher - Woods Cross UT, US
Jim Lee - Benicia CA, US
Ron Ness - Lincoln CA, US
Herb Chen - Oakland CA, US
Jesse Hubbard - Riverton UT, US
Phillip J. Miller - Berkeley CA, US
John Barr - Brea CA, US
James W. Long - Salt Lake City UT, US
Karl Nelson - Draper UT, US

World Heart Corporation - Salt Lake City UT

A61M 1/10

623 31, 600 16

There are disclosed apparatus and methods for replacing a percutaneous cable in connection with a vascular device. In an embodiment, the apparatus includes a distal disconnect coupler, a distal connector portion of the cable configured for removable connection with the distal disconnect coupler, and a connector cap configured for removable connection with the distal disconnect coupler and for tunneling through skin and tissue. In one embodiment, a method of repositioning a percutaneous cable in connection with a vascular device includes providing the cable with a distal disconnect coupler, disconnecting the cable at the distal disconnect coupler, attaching a connector cap to the distal disconnect coupler, removing the percutaneous cable from a first exit site, tunneling the connector cap together with the distal disconnect coupler through skin and tissue to form a new exit site, disconnecting the connector cap, and connecting the cable to the distal disconnect coupler.

6074180, Jun 13, 2000

May 2, 1997

8/850598

Pratap S. Khanwilkar - Salt Lake City UT
Paul E. Allaire - Charlottesville VA
Gill Brent Bearnson - Salt Lake City UT
Don B. Olsen - Salt Lake City UT
Eric H. Maslen - Earlysville VA
James W. Long - Salt Lake City UT

Medquest Products, Inc. - Salt Lake City UT
University of Utah Research Foundation - Salt Lake City UT
University of Virginia Patent Foundation - Charlottesville VA

F04B 1700

417356

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 rotated by an integral motor, (ii) a pump housing and arcuate passages for fluid flow and containment, (iii) a brushless driving motor embedded and integral with the pump housing, (iv) a power supply, and (v) specific electronic sensing of impeller position, velocity or acceleration using a self-sensing method and physiological control algorithm for motor speed and pump performance based upon input from the electromagnetic bearing currents and motor back emf--all fitly joined together to provide efficient, durable and low maintenance pump operation. A specially designed impeller and pump housing provide the mechanism for transport and delivery of fluid through the pump to a pump output port with reduced fluid turbulence.

6302661, Oct 16, 2001

Dec 10, 1999

9/459146

Pratap S. Khanwilkar - Salt Lake City UT
Paul E. Allaire - Charlottesville VA
Gill Brent Bearnson - Salt Lake City UT
Don B. Olsen - Salt Lake City UT
Eric H. Maslen - Earlysville VA
James W. Long - Salt Lake City UT

F04B 1700

4174237

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 containment, (iii) a brushless driving motor embedded and integral with the pump housing, (iv) a power supply, and (v) specific electronic sensing and control algorithms--all fitly joined together to provide efficient, durable and low maintenance pump operation. A specially designed impeller and pump housing provide the mechanism for transport and delivery of fluid through the pump to a pump output port with reduced fluid turbulence.

2008024, Oct 2, 2008

Oct 26, 2007

11/925294

Paul E. Allaire - Charlottesville VA, US
Gill B. Bearnson - Salt Lake City UT, US
Ronald D. Flack - Pittsville VA, US
Donald B. Olsen - Salt Lake City UT, US
James W. Long - Salt Lake City UT, US
Ajit Kumar B. Nair - Milpitas CA, US
Pratap S. Khanwilkar - Salt Lake City UT, US
Jeffrey Decker - Streetsboro OH, US
Michael J. Baloh - Detroit MI, US

WORLD HEART, INC. - Salt Lake City UT

F04B 17/00, B63H 1/02

417420

A pump for pumping sensitive fluids, such as blood, has no mechanical contact between the impeller and any other structure.