Mark Alan Erickson

US Patent:

6641542, Nov 4, 2003

Filed:

Apr 26, 2002

Appl. No.:

10/133009

Inventors:

Yong Kyun Cho - Maple Grove MN
Luc R. Mongeon - Minneapolis MN
Mark K. Erickson - Brooklyn Park MN
H. Toby Markowitz - Roseville MN

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 508

US Classification:

600529, 600547, 600536

Abstract:

The present invention provides a method and apparatus for detecting and treating sleep respiratory events that includes a plurality of sensors gathering physiological data related to sleep respiratory events. A processor extracts an average cycle length and a frequency of at least one of Cheyne-Stokes respiration and periodic breathing based upon the physiological data, and determines whether therapy is required based on the average cycle length and the frequency.

US Patent:

6895275, May 17, 2005

Filed:

Jan 22, 2002

Appl. No.:

10/053762

Inventors:

Harold Toby Markowitz - Roseville MN, US
Mark K. Erickson - Brooklyn Park MN, US
Alan V. Sahakian - Northbrook IL, US
Andreas Schuler - Pewaukee WI, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N001/362

US Classification:

607 18

Abstract:

The present invention relates to methods and apparatus for detection and treatment of syncope in an implantable medical device, and particularly to detection of syncope as a function of a predetermined increase in one or more respiration parameter and drop in heart rate and optionally delivering a pacing therapy in response thereto. The onset of a syncopal episode is declared when the patient's respiration rate and/or tidal volume and/or minute ventilation increases by a predetermined increment or threshold and a heart rate drops below a threshold heart rate drop. The threshold heart rate drop is preferably established as a function of the change in the respiration parameter.

US Patent:

7025730, Apr 11, 2006

Filed:

Apr 21, 2003

Appl. No.:

10/419465

Inventors:

Yong K. Cho - Maple Grove MN, US
Mark K. Erickson - Brooklyn Park MN, US
H. Toby Markowitz - Roseville MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/08

US Classification:

600529, 607 42

Abstract:

The invention relates generally to a system and method for monitoring and automatically delivering a therapy for sleep-related disordered breathing. In one form the present invention relates to an external device for monitoring for sleep-related disordered breathing in communication with an implantable medical device for delivering an electrical stimulation therapy. In another form the present invention relates to an implantable medical device for detecting sleep-related disordered breathing episode(s) and an external apparatus (e. g. , a CPAP machine) for providing therapy to terminate, and/or reduce, said episode(s). In this form of the invention, the implantable medical device communicates with the external apparatus so that the therapy provided corresponds in magnitude and duration to the severity and/or length of the episode(s). In yet another form, an implantable apparatus detects said disordered breathing episode(s) and a hybrid therapy is provided by both the implantable apparatus and an external apparatus.

US Patent:

7027865, Apr 11, 2006

Filed:

Apr 16, 2003

Appl. No.:

10/414908

Inventors:

Mark K. Erickson - Brooklyn Park MN, US
H. Toby Markowitz - Roseville MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/36

US Classification:

607 9, 607 25

Abstract:

A method and apparatus for cardiac pacing are provided in which pacing pulses are delivered at an increased rate in response to a detected intrinsic heart rate drop and a special rate drop response detection scheme is temporarily disabled until an intrinsic heart rate exceeds a predetermined threshold value. If the pacing rate reaches the lower pacing rate without sensing intrinsic activity, heart rate drop detection remains disabled and lower rate pacing continues. Rate drop detection is re-enabled whenever sufficient sensed intrinsic activity indicates that a sudden intrinsic rate drop could occur again. Thus, the subsequent reduction in heart rate requiring therapy is declared only if a sensed intrinsic heart rate drops from above an intermediate value (herein defined as a re-enable rate) that is set above the lower pacing rate and an upper pacing rate.

US Patent:

7160252, Jan 9, 2007

Filed:

Apr 21, 2003

Appl. No.:

10/419467

Inventors:

Yong K. Cho - Maple Grove MN, US
Steven L. Ning - Fridley MN, US
Luc R. Mongeon - Minneapolis MN, US
Scott W. Davie - Saint Paul MN, US
Todd J. Sheldon - North Oaks MN, US
Mark K. Erickson - Brooklyn Park MN, US
H. Toby Markowitz - Roseville MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/02
A61B 5/05
A61B 5/00

US Classification:

600484, 600483, 600529, 600324, 600323

Abstract:

A system and method for monitoring respiration including sensing a signal that varies with respiration, deriving a respiration parameter, applying criteria for detecting a respiration disturbance and determining one or more respiratory disturbance metrics. The system preferably includes an implantable sensor with an associated implantable medical device such that chronic respiration monitoring is possible. The implantable medical device may execute methods for detecting and measuring respiratory disturbances or may store data to be transferred to an external device for detecting and measuring respiratory disturbances. Respiratory disturbance detection may trigger a responsive action such as physiological data storage, a change in therapy delivery, or a clinician warning. Assessment of cardiac function may be made based on metrics of respiratory disturbances or a measure of circulatory delay time following detection of a respiratory disturbance.

US Patent:

7315759, Jan 1, 2008

Filed:

Sep 21, 2004

Appl. No.:

10/945639

Inventors:

H. Toby Markowitz - Roseville MN, US
Pooja Mehta - Hanover Park IL, US
Chad T. Giese - St. Paul MN, US
Mark K. Erickson - Brooklyn Park MN, US
Yong K. Cho - Maple Grove MN, US
Marina Jovanovic - Minneapolis MN, US
Sameh Sowelam - Maple Grove MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/08

US Classification:

607 18

Abstract:

Oxygen saturation data is monitored during a predefined window to obtain a measurement of circulation delay. The measured circulation delay is used as a basis for determining therapies, including overdrive pacing. In some embodiments, circulation delay is used to identify patients that will benefit from overdrive pacing as a therapy for sleep disordered breathing.

US Patent:

7524292, Apr 28, 2009

Filed:

Nov 30, 2006

Appl. No.:

11/565092

Inventors:

Yong K. Cho - Maple Grove MN, US
Steven L. Ning - Fridley MN, US
Luc R. Mongeon - Minneapolis MN, US
Scott W. Davie - Saint Paul MN, US
Todd J. Sheldon - North Oaks MN, US
Mark K. Erickson - Brooklyn Park MN, US
H. Toby Markowitz - Roseville MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/08
A61B 5/02
A61B 5/00
A61B 5/103
A61B 5/05

US Classification:

600529, 600484, 600483, 600536, 600324, 600509, 600595, 600547

Abstract:

A system and method for monitoring respiration including sensing a signal that varies with respiration, deriving a respiration parameter, applying criteria for detecting a respiration disturbance and determining one or more respiratory disturbance metrics. The system preferably includes an implantable sensor with an associated implantable medical device such that chronic respiration monitoring is possible. The implantable medical device may execute methods for detecting and measuring respiratory disturbances or may store data to be transferred to an external device for detecting and measuring respiratory disturbances. Respiratory disturbance detection may trigger a responsive action such as physiological data storage, a change in therapy delivery, or a clinician warning. Assessment of cardiac function may be made based on metrics of respiratory disturbances or a measure of circulatory delay time following detection of a respiratory disturbance.

US Patent:

7761425, Jul 20, 2010

Filed:

Mar 29, 2007

Appl. No.:

11/693370

Inventors:

Mark Erickson - Brooklyn Park MN, US
Wim DeWispeleare - Lochristi, BE

Assignee:

Symantec Corporation - Mountain View CA

International Classification:

G06F 17/30

US Classification:

707649

Abstract:

A system and method for data backup. A computer system includes clients coupled to backup server and single instance store via a network. Prior to requesting an initial data backup, a new client segments and fingerprints the data to be backed up. The new client creates a sorted list of hash values and removes duplicate values in the list. In response to receiving the sorted list, a backup server may further reduce the sorted list to a unique list by removing hash values corresponding to data segments already residing on the single instance store. In response to receiving the unique list, the new client may transmit corresponding data segments to the backup server via the network. The transmitted data segments are added to a single instance store.