Kenneth C Olson

US Patent:

6411846, Jun 25, 2002

Filed:

Oct 4, 2000

Appl. No.:

09/678820

Inventors:

James E. Brewer - Lino Lakes MN
Gary B. Stendahl - Crystal MN
Kenneth F. Olson - Edina MN

Assignee:

SurVivaLink Corporation - Minneapolis MN

International Classification:

A61N 139

US Classification:

607 5

Abstract:

An apparatus and method for determining an optimal transchest external defibrillation waveform that provides for variable energy in the first or second phase of a biphasic waveform that, when applied through a plurality of electrodes positioned on a patients torso, will produce a desired response in the patients cardiac cell membranes. The method includes the steps of providing a quantitative model of a defibrillator circuit for producing external defibrillation waveforms, the quantitative model of a patient includes a chest component, a heart component, a cell membrane component and a quantitative description of the desired cardiac membrane response function. Finally, a quantitative description of a transchest external defibrillation waveform that will produce the desired cardiac membrane response function is computed. The computation is made as a function of the desired cardiac membrane response function, the patient model and the defibrillator circuit model.

US Patent:

7463923, Dec 9, 2008

Filed:

Jan 16, 2004

Appl. No.:

10/760040

Inventors:

James E. Brewer - Lino Lakes MN, US
Gary B. Stendahl - Crystal MN, US
Kenneth F. Olson - Edina MN, US

Assignee:

Cardiac Science Corporation - Bothell WA

International Classification:

A61N 1/39

US Classification:

607 5

Abstract:

An apparatus and method for determining an optimal transchest external defibrillation waveform that provides for variable energy in the first or second phase of a biphasic waveform that, when applied through a plurality of electrodes positioned on a patient's torso, will produce a desired response in the patient's cardiac cell membranes. The method includes the steps of providing a quantitative model of a defibrillator circuit for producing external defibrillation waveforms, the quantitative model of a patient includes a chest component, a heart component, a cell membrane component and a quantitative description of the desired cardiac membrane response function. Finally, a quantitative description of a transchest external defibrillation waveform that will produce the desired cardiac membrane response function is computed. The computation is made as a function of the desired cardiac membrane response function, the patient model and the defibrillator circuit model.

US Patent:

20020138104, Sep 26, 2002

Filed:

Feb 19, 2002

Appl. No.:

10/078735

Inventors:

James Brewer - Lino Lakes MN, US
Gary Stendahl - Crystal MN, US
Kenneth Olson - Edina MN, US

Assignee:

SurVivaLink Corporation

International Classification:

A61N001/39

US Classification:

607/005000

Abstract:

An apparatus and method for determining an optimal transchest external defibrillation waveform that provides for variable energy in the first or second phase of a biphasic waveform that, when applied through a plurality of electrodes positioned on a patient's torso, will produce a desired response in the patient's cardiac cell membranes. The method includes the steps of providing a quantitative model of a defibrillator circuit for producing external defibrillation waveforms, the quantitative model of a patient includes a chest component, a heart component, a cell membrane component and a quantitative description of the desired cardiac membrane response function. Finally, a quantitative description of a transchest external defibrillation waveform that will produce the desired cardiac membrane response function is computed. The computation is made as a function of the desired cardiac membrane response function, the patient model and the defibrillator circuit model.

US Patent:

59916583, Nov 23, 1999

Filed:

Jun 24, 1997

Appl. No.:

8/881662

Inventors:

James E. Brewer - Cottage Grove MN
Kenneth F. Olson - Edina MN
Byron L. Gilman - Minnetonka MN
R. Eric Bosler - St. Paul MN

Assignee:

SurVivaLink Corporation - Minneapolis MN

International Classification:

A61N 139

US Classification:

607 7

Abstract:

The present invention is an external defibrillator which controls and manages the formation of defibrillation waveforms. The waveforms are dynamically adjusted and created to be consistent with a myocardial cell response waveform. Dynamic tilt calculations based on time slices and corresponding functions based on best-fit models are used to generate the waveforms. The waveforms are dynamically adjusted to compensate for changes in resistance due to changes in the voltage during delivery of the waveform. The waveforms include a first and a second phase and are formed with minimal delay therebetween.

US Patent:

59447427, Aug 31, 1999

Filed:

Apr 8, 1998

Appl. No.:

9/057189

Inventors:

James E. Brewer - Cottage Grove MN
Kenneth F. Olson - Edina MN

Assignee:

SurVivaLink Corporation - Minneapolis MN

International Classification:

A61N 139

US Classification:

607 6

Abstract:

A method of generating and applying a defibrillation shock of the present invention includes first applying a defibrillation shock pulse to a patient with an initial predetermined amount of energy not based on a patient-dependent electrical parameter, and while monitoring a patient-dependent electrical parameter. Next, patient transthoracic impedance is determined based on the patient-dependent electrical parameter. Finally, a subsequent predetermined amount of energy is applied to the patient based on the patient transthoracic impedance calculated above and while monitoring the patient-dependent electrical parameter. Subsequent defibrillation shock pulses are applied using a patient impedance based on the patient-dependent electrical parameter observed during the most recent defibrillation shock. In this manner, an optimal combination of charged voltage and the maximum allowed current (under the AAMI defibrillation waveform standard) is applied for a patient's given transthoracic impedance.

US Patent:

58209573, Oct 13, 1998

Filed:

May 6, 1996

Appl. No.:

8/646709

Inventors:

Kristin M. Schroeder - Roseville MN
Brian L. Koster - Mendota Heights MN
Timothy T. Magill - Maplewood MN
Kenneth G. Olson - Woodbury MN
Takashi Harada - Tokyo, JP

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B32B 300

US Classification:

428 401

Abstract:

An anti-reflective film construction contains an optically transparent polymeric film having a textured surface and an optically transparent adhesive, the film construction configured to exhibit light transmission of greater than about 70 percent and 60. degree. gloss measurement of between about 15 and 100. Methods of producing such film constructions and methods of reducing reflection from a surface are also described.

US Patent:

61989673, Mar 6, 2001

Filed:

Jul 22, 1999

Appl. No.:

9/359587

Inventors:

James E. Brewer - Cottage Grove MN
Kenneth F. Olson - Edina MN
Byron L. Gilman - Minnetonka MN
R. Eric Bosler - St. Paul MN

Assignee:

SurVivaLink Corporation - Minneapolis MN

International Classification:

A61N 139

US Classification:

607 7

Abstract:

The present invention discloses a method and device in which an external defibrillator is integrated with an algorithm implemented in a programmable microprocessor which controls and manages the formation of defibrillation waveforms. The waveforms are dynamically adjusted and created to be consistent with a myocardial cell response waveform. Dynamic tilt calculations based on time slices and corresponding fit functions based on best-fit models are used to generate the waveforms. The waveforms include a first and a second phase and are formed with minimal delay therebetween.

US Patent:

59637587, Oct 5, 1999

Filed:

May 12, 1998

Appl. No.:

9/076162

Inventors:

Stewart H. Corn - Saint Paul MN
Brett A. Behnke - Hastings MN
Thomas A. Speckhard - Cottage Grove MN
Oyvind H. Iversen - Cottage Grove MN
Christopher J. Anton - Rosemount MN
Kenneth W. Olson - River Falls WI

Assignee:

Minnesota Mining and Manufacturing Company - Saint Paul MN

International Classification:

G03G 1510
G03G 1310

US Classification:

399 57

Abstract:

A system for substantially maintaining color density in liquid toners for electrographic printers is disclosed. The system includes means for substantially continuously supplying toner concentrate to a printer and means for substantially continuously withdrawing liquid toner from a printer into a waste flowstream. A method to achieve substantially consistent color density of liquid toner in an electrographic printing system is also disclosed.