David R Bloem

US Patent:

6560215, May 6, 2003

Filed:

Aug 24, 1999

Appl. No.:

09/379673

Inventors:

David Bloem - Crystal Lake IL
Gary Howard - Mesa AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7212

US Classification:

370347, 370350, 370321, 370503

Abstract:

A method for updating a timing offset for stored events scheduled in an event generator in a radio communication system including at least one base station and a mobile device includes a first step of measuring a change in a previously stored timing offset between a reference clock in the mobile device and a channel clock transmitted by the at least one base station. A second step includes adding the timing change to the previously stored timing offset in the timing offset register. A third step includes updating the timing offset in the event generator without interrupting execution of the stored events, such that synchronization is reacquired between the mobile unit and the base station. As a result, timing offset updating occurs without stopping or resetting the event generator.

US Patent:

8391944, Mar 5, 2013

Filed:

Jan 15, 2010

Appl. No.:

12/687954

Inventors:

Richard J. O'Brien - Hugo MN, US
D. Curtis Deno - Andover MN, US
David A. Anderson - Stanchfield MN, US
David R. Bloem - Maple Grove MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/1455
A61N 1/365

US Classification:

600324, 607 17, 607 18

Abstract:

A medical device includes one or more sensors used to acquire a multi-dimensional signal. In one embodiment, principal component analysis is performed on the multi-dimensional signal to produce signal data. The principal component analysis results are used to cancel signal artifact in one embodiment. A medical device controller produces one of a therapy control and a diagnostic output in response to the signal data.

US Patent:

8587426, Nov 19, 2013

Filed:

Jan 15, 2010

Appl. No.:

12/687936

Inventors:

David R. Bloem - Maple Grove MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

G08B 1/08

US Classification:

34053912, 34053911, 3405731, 600301

Abstract:

A medical device includes multiple sensors used to acquire sensor signals grouped into multiple sets to obtain multiple multi-dimensional signals. Principal component analysis of the multi-dimensional signals is performed to compute principal components of variation of the multi-dimensional signals. Features extracted from the principal components are used in detecting physiological events.

US Patent:

20100179444, Jul 15, 2010

Filed:

Jan 15, 2010

Appl. No.:

12/687946

Inventors:

Richard J. O'Brien - Hugo MN, US
D. Curtis Deno - Andover MN, US
David A. Anderson - Stanchfield MN, US
David R. Bloem - Maple Grove MN, US

International Classification:

A61B 5/0402
G08B 23/00

US Classification:

600509, 3405731

Abstract:

A medical device having a sensor sensing an n-dimensional signal during a first known variable condition and during a second known variable condition different from the first known variable condition, a processor performing principal component analysis (PCA) on the sensed n-dimensional signal to generate a first template corresponding to a principal component of variation associated with the first known variable condition and a second template corresponding to a principal component of variation associated with the second known variable condition, a storage device storing the first template and the second template, and a controller detecting a patient condition in response to the stored templates.

US Patent:

20100179445, Jul 15, 2010

Filed:

Jan 15, 2010

Appl. No.:

12/687963

Inventors:

Richard J. O'Brien - Hugo MN, US
D. Curtis Deno - Andover MN, US
David A. Anderson - Stanchfield MN, US
David R. Bloem - Maple Grove MN, US

International Classification:

A61B 5/0402
G08B 23/00

US Classification:

600512, 3405731

Abstract:

A medical device includes one or more sensors used to acquire a multi-dimensional signal. In one embodiment, principal component analysis is performed on the multi-dimensional signal to produce signal data. The principal component analysis results are used to cancel signal artifact in one embodiment. A medical device controller produces one of a therapy control and a diagnostic output in response to the signal data.

US Patent:

20120029364, Feb 2, 2012

Filed:

Apr 25, 2011

Appl. No.:

13/093146

Inventors:

Saul E. Greenhut - Aurora CO, US
Robert T. Taepke - Coon Rapids MN, US
David R. Bloem - Maple Grove MN, US
Yong K. Cho - Maple Grove MN, US
Donna M. Salmi - Minneapolis MN, US

International Classification:

A61N 1/36
A61M 5/168
A61B 5/021

US Classification:

600485, 607 62, 604 66

Abstract:

Various techniques for measuring cardiac cycle length and pressure metrics based on pulmonary artery pressures are described. One example method described includes identifying a point within a derivative signal of a cardiovascular pressure signal without reference to electrical activity of a heart, initiating a time window from the identified point in the derivative signal, identifying a point within the cardiovascular signal within the time window, and determining at least one of a systolic pressure or diastolic pressure based on the identified point.

US Patent:

20120029365, Feb 2, 2012

Filed:

Apr 25, 2011

Appl. No.:

13/093166

Inventors:

Saul E. Greenhut - Aurora CO, US
Robert T. Taepke - Cool Rapids MN, US
David R. Bloem - Maple Grove MN, US
Yong K. Cho - Maple Grove MN, US
Donna M. Salmi - Minneapolis MN, US

International Classification:

A61N 1/36
A61M 5/168
A61B 5/021

US Classification:

600485, 607 62, 604 66

Abstract:

Various techniques for measuring cardiac cycle length and pressure metrics based on pulmonary artery pressures are described. One example method described includes identifying a point within a derivative signal of a cardiovascular pressure signal without reference to electrical activity of a heart, initiating a time window from the identified point in the derivative signal, identifying a point within the cardiovascular signal within the time window, and determining at least one of a systolic pressure or diastolic pressure based on the identified point.

US Patent:

55273440, Jun 18, 1996

Filed:

Aug 1, 1994

Appl. No.:

8/283406

Inventors:

Robert C. Arzbaecher - Chicago IL
Thomas E. Bump - Chicago IL
Charles E. Yurkonis - Mt. Prospect IL
David R. Bloem - Evergreen Park IL

Assignee:

Illinois Institute of Technology - Chicago IL

International Classification:

A61N 139

US Classification:

607 3

Abstract:

A method and an implantable apparatus for automatically delivering a defibrillating drug to a patient upon detection of the onset of atrial fibrillation. Atrial activity of a heart is detected and monitored. A delivery time is continuously computed and a delivery signal is emitted as a function of the monitored level of the atrial activity. When the delivery signal is emitted, an infusion pump discharges a defibrillating drug into the bloodstream of the patient. The atrial activity is also continuously monitored for computing a pacing time at which a pacing signal is emitted as a second function of the monitored level of atrial activity. When the pacing signal is emitted a pacer paces the atrium of the heart.