Ron A Balczewski from Chapel Hill, NC, age 60

High Frequency Oscillator For Implantable Medical Devices
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US Patent:

6453196, Sep 17, 2002
Filed:

Aug 7, 2000
Appl. No.:

09/633549
Inventors:

Jeffrey A. Von Arx - Minneapolis MN
Ron A. Balczewski - Roseville MN
Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:

A61N 100
US Classification:

607 9
Abstract:

A timing circuit especially designed for use in implantable medical devices provides both a low frequency clock and a high frequency clock. The low frequency clock and high frequency clock are compared each time the oscillator producing the high frequency clock is enabled and the result of the comparison is used to retrim the high frequency oscillator to maintain a stable output frequency, even when subjected to drift. Additional circuitry is provided for signaling an oscillator fault in the event that an error signal resulting from the comparison of the low frequency clock with the high frequency clock exceeds a predetermined limit value. Digital trim values are stored for fast and controlled oscillator start-up.

Telemetry Apparatus And Method For An Implantable Medical Device
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US Patent:

6574510, Jun 3, 2003
Filed:

Nov 30, 2000
Appl. No.:

09/727093
Inventors:

Jeffrey A. Von Arx - Minneapolis MN
Mark D. Amundson - Cambridge MN
William R. Mass - Maple Grove MN
Ron Balczewski - Roseville MN
William J. Linder - Golden Valley MN
Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:

A61N 1372
US Classification:

607 60, 607 32, 128901, 3405727, 3405731
Abstract:

An apparatus and method for enabling radio-frequency communications with an implantable medical device utilizing far-field electromagnetic radiation. Such radio-frequency communications can take place over much greater distances than with inductively coupled antennas.

Implantable Medical Device With Temperature Measuring And Storing Capability
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US Patent:

6662048, Dec 9, 2003
Filed:

Mar 30, 2001
Appl. No.:

09/823260
Inventors:

Ron A. Balczewski - Roseville MN
Jeffrey A. Von Arx - Minneapolis MN
William J. Linder - Golden Valley MN
Mark D. Amundson - Cambridge MN
Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:

A61N 1365
US Classification:

607 21, 600549, 374 1
Abstract:

An implantable medical device such as a cardiac pacemaker or implantable cardioverter/defibrillator with the capability of storing body temperature measurements taken periodically and/or when triggered by particular events.

Telemetry Apparatus And Method For An Implantable Medical Device
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US Patent:

6766201, Jul 20, 2004
Filed:

Jun 3, 2003
Appl. No.:

10/454013
Inventors:

Jeffrey A. Von Arx - Minneapolis MN
Mark D. Amundson - Cambridge MN
William R. Mass - Maple Grove MN
Ron Balczewski - Roseville MN
William J. Linder - Golden Valley MN
Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:

A61N 1372
US Classification:

607 60, 607 32, 128903, 5405727, 5405731
Abstract:

An apparatus and method for enabling radio-frequency communications with an implantable medical device utilizing far-field electromagnetic radiation. Such radio-frequency communications can take place over much greater distances than with inductively coupled antennas.

Telemetry Apparatus And Method For An Implantable Medical Device
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US Patent:

6954673, Oct 11, 2005
Filed:

Jul 19, 2004
Appl. No.:

10/894419
Inventors:

Jeffrey A. Von Arx - Minneapolis MN, US
Mark D. Amundson - Cambridge MN, US
William R. Mass - Maple Grove MN, US
Ron Balczewski - Roseville MN, US
William J. Linder - Golden Valley MN, US
Assignee:

Cardiac Pacemakers, inc. - St. Paul MN
International Classification:

A61N001/372
US Classification:

607 60, 607 32, 128903
Abstract:

An apparatus and method for enabling radio-frequency communications with an implantable medical device utilizing far-field electromagnetic radiation. Such radio-frequency communications can take place over much greater distances than with inductively coupled antennas.

Telemetry Duty Cycle Management System For An Implantable Medical Device
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US Patent:

6993393, Jan 31, 2006
Filed:

Dec 19, 2001
Appl. No.:

10/025223
Inventors:

Jeffrey A. Von Arx - Minneapolis MN, US
Ron Balczewski - Roseville MN, US
Scott T. Mazar - Inver Grove Heights MN, US
William J. Linder - Golden Valley MN, US
William R. Mass - Maple Grove MN, US
Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:

A61N 1/10
US Classification:

607 60
Abstract:

A telemetry system enabling radio frequency (RF) communications between an implantable medical device and an external device, or programmer, in which the RF circuitry is normally maintained in a powered down state in order to conserve power. At synchronized wakeup intervals, one of the devices designated as a master device powers up its RF transmitter to request a communications session, and the other device designated as a slave device powers up its RF transmitter to listen for the request. Telemetry is conducted using a far field or near field communication link.

Ferrite Core Telemetry Coil For Implantable Medical Device
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US Patent:

7103413, Sep 5, 2006
Filed:

Jul 12, 2002
Appl. No.:

10/194401
Inventors:

Lawrence Swanson - Lino Lakes MN, US
Jeffrey A. Von Arx - Minneapolis MN, US
Ron Balczewski - Roseville MN, US
Jeff Taylor - Wyoming MN, US
Greg Carpenter - Centerville MN, US
Assignee:

Cardiac Pacemakers, Inc. - Saint Paul MN
International Classification:

A61B 18/04
US Classification:

607 32, 128903
Abstract:

An implantable medical device such as a cardiac pacemaker with a telemetry coil located in the device header rather than the conductive housing. The telemetry coil has a core made of magnetically permeable material such as ferrite in order to increase the efficiency of the coil and lessen space requirements.

Method And Apparatus For Adjusting Cardiac Event Detection Threshold Based On Dynamic Noise Estimation
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US Patent:

7155275, Dec 26, 2006
Filed:

Oct 18, 2004
Appl. No.:

10/967660
Inventors:

William J. Linder - Golden Valley MN, US
Jeremy Maniak - Columbia Heights MN, US
Ron A. Balczewski - Bloomington MN, US
Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN
International Classification:

A61B 5/0402
US Classification:

600509, 600508, 128901
Abstract:

An implantable cardiac rhythm management (CRM) device includes a sensing and detection circuit that senses at least one cardiac signal and detects cardiac electrical events from the sensed cardiac signal using a detection threshold that is adjusted based on a dynamic noise estimation. The sensed cardiac signal is filtered to produce a filtered cardiac signal having a signal frequency band and a noise signal having a noise frequency band. The noise frequency band is substantially different from the signal frequency band. A dynamic noise floor is produced based on the noise signal and used as the minimum value for the detection threshold. A cardiac electrical is detected when the amplitude of the filtered cardiac signal exceeds the detection threshold.

Ron A Balczewski