Daniel R Hansen

US Patent:

8634914, Jan 21, 2014

Filed:

Jan 27, 2012

Appl. No.:

13/359513

Inventors:

Daniel L. Hansen - Castle Rock CO, US
Robert M. Ecker - Lino Lakes MN, US
Paul R. Solheim - Blaine MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/362

US Classification:

607 16, 607 9

Abstract:

In the present disclosure, conservation of an implantable medical device power supply of is facilitated by controlling the power consumption of the device's processing component. The power supplied to the processing component is controlled to enable processing of received events as a function of predetermined criteria rather than the actual occurrence of the events which is frequent, but irregular. Accordingly, the need for the processing component to start and stop (and thereby be fully powered on each start) with receipt of each event is obviated thereby maintaining the power consumption of the processing component and increasing longevity of the device. Event data associated with received events is stored in an event queue and subsequently retrieved and transmitted for processing based on predetermined criteria. The power supplied during an idle state of the processing component may be reduced in relation to the power supplied during a wake up state.

US Patent:

20230102092, Mar 30, 2023

Filed:

Dec 5, 2022

Appl. No.:

18/061878

Inventors:

- Minneapolis MN, US
Daniel L. Hansen - Castle Rock CO, US
Grant A. Neitzell - Plymouth MN, US
Jerry D. Reiland - Coon Rapids MN, US
Ryan D. Wyszynski - Oak Grove MN, US

International Classification:

A61B 5/361
A61B 5/24
A61B 5/352
A61N 1/362
A61N 1/365
A61B 5/00
A61B 5/316
A61N 1/39
A61B 5/349
A61B 5/363

Abstract:

Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P-wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.

US Patent:

20200100694, Apr 2, 2020

Filed:

Dec 2, 2019

Appl. No.:

16/700087

Inventors:

- Minneapolis MN, US
Daniel L. HANSEN - Castle Rock CO, US
Grant A. NEITZELL - Plymouth MN, US
Jerry D. REILAND - Coon Rapids MN, US
Ryan WYSZYNSKI - Oak Grove MN, US

International Classification:

A61B 5/046
A61B 5/04
A61B 5/0456
A61N 1/362
A61N 1/365
A61N 1/39
A61B 5/0452
A61B 5/00

Abstract:

Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P-wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.

US Patent:

20180028082, Feb 1, 2018

Filed:

Feb 18, 2016

Appl. No.:

15/551924

Inventors:

- Minneapolis MN, US
Daniel L. HANSEN - Castle Rock CO, US
Grant A. NEITZELL - Plymouth MN, US
Jerry D. REILAND - Coon Rapids MN, US
Ryan WYSZYNSKI - Oak Grove MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/046
A61N 1/365
A61N 1/362
A61B 5/0456
A61B 5/0452
A61B 5/00
A61N 1/39
A61B 5/04
A61B 5/0464

Abstract:

Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.

US Patent:

20160235315, Aug 18, 2016

Filed:

Apr 24, 2015

Appl. No.:

14/695135

Inventors:

- Minneapolis MN, US
Daniel L. Hansen - Castle Rock CO, US
Grant A. Neitzell - Fridley MN, US

International Classification:

A61B 5/046
A61B 5/04
A61B 5/00
A61B 5/0456

Abstract:

A method and medical device for determining a P-wave of a cardiac signal that includes sensing the cardiac signal, determining a P-wave sensing window in response to the sensed cardiac signal, the P-wave sensing window having a first portion and a second portion, determining signal characteristics of the sensed cardiac signal within the first portion and within the second portion, comparing the determined signal characteristics, and determining the P-wave in response to the comparing.

US Patent:

20160235317, Aug 18, 2016

Filed:

Oct 29, 2015

Appl. No.:

14/926419

Inventors:

- Minneapolis MN, US
Daniel L. Hansen - Castle Rock CO, US
Grant A. Neitzell - Seattle WA, US
Jerry D. Reiland - Coon Rapids MN, US
Ryan Wyszynski - Oak Grove MN, US

International Classification:

A61B 5/04
A61B 5/0464
A61B 5/046
A61B 5/042
A61B 5/0456

Abstract:

An implantable medical device and method for determining an atrial arrhythmia event that includes a cardiac sensing device comprising a housing having circuitry positioned therein, a plurality of electrodes electrically coupled to the circuitry to sense a cardiac signal, and a processor configured to generate an initial detection of an atrial arrhythmia event in response to an atrial arrhythmia threshold, determine whether a P-wave occurs during the initial detection, determine an adaptive threshold in response to the P-wave being detected, adjust the atrial arrhythmia threshold in response to the adaptive threshold, and generate a subsequent initial detection of an atrial arrhythmia event using the adjusted atrial arrhythmia threshold.

US Patent:

20160235320, Aug 18, 2016

Filed:

Apr 24, 2015

Appl. No.:

14/695171

Inventors:

- Minneapolis MN, US
Daniel L. Hansen - Castle Rock CO, US
Grant A. Neitzell - Fridley MN, US

International Classification:

A61B 5/04
A61B 5/0464

Abstract:

A method and implantable medical device for determining noise in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window comprising a first portion and a second portion, determining a first derivative signal in response to the sensed cardiac signal within only one of the first portion and the second portion of the sensing window, determining a second derivative signal in response to the sensed cardiac signal within the one of the first portion and the second portion of the sensing window, determining whether an amplitude of the second derivative signal satisfies an amplitude threshold, and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold.

US Patent:

20160235321, Aug 18, 2016

Filed:

Apr 24, 2015

Appl. No.:

14/695156

Inventors:

- Minneapolis MN, US
Daniel L. Hansen - Castle Rock CO, US
Grant A. Neitzell - Fridley MN, US

International Classification:

A61B 5/0464
A61B 5/04

Abstract:

A method and implantable medical device for determining a flutter event in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion. A first derivative signal and a second derivative signal are determined in response to the sensed cardiac signal within the first portion and the second portion of the sensing window, and a sum of amplitudes of the second derivative signal within one or both of the first portion and the second portion of the sensing window is determined, and the flutter event is determined in response to the determined sum of amplitudes.