Linda L Ruetz

US Patent:

8644923, Feb 4, 2014

Filed:

Jul 24, 2008

Appl. No.:

12/178903

Inventors:

Paul A. Belk - Maple Grove MN, US
Charles D. Swerdlow - Los Angeles CA, US
Linda L. Ruetz - New Brighton MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN
Imperception, Inc. - Los Angeles CA

International Classification:

A61N 1/365

US Classification:

607 4

Abstract:

A method and apparatus sense a cardiac electrical signal and determine a signal quality parameter of the cardiac electrical signal. A number of shock pulses to be delivered to a patient's heart is determined in response to the signal quality parameter. Each of the shock pulses are scheduled to be delivered at a unique offset from a T-wave shock interval in one embodiment of the invention.

US Patent:

20130274642, Oct 17, 2013

Filed:

Mar 15, 2013

Appl. No.:

13/844599

Inventors:

Bryant J. Pudil - Plymouth MN, US
Thomas E. Meyer - Maple Grove MN, US
Linda L. Ruetz - New Brighton MN, US
Carl Schu - Plymouth MN, US

International Classification:

A61M 1/14

US Classification:

604 501

Abstract:

A dialysis device for operation in multiple modes and for maintaining a known gradient of potassium ion or other electrolyte between the blood of a patient and a dialysate fluid is described. The dialysis device is capable of being used for hemodialysis or peritoneal dialysis, and the dialysis device is capable of operation with a dialysate purification unit outside of a clinical setting or with a supply of water that can be supplied in a clinical setting. The dialysis device has a composition sensor containing a potassium-sensitive electrode for measuring a potassium ion concentration in one or more of the patient's blood and the dialysate fluid and an infusate pump operated to adjust a potassium ion concentration in the dialysate fluid based at least in part on data from the composition sensor.

US Patent:

6752765, Jun 22, 2004

Filed:

Nov 17, 2000

Appl. No.:

09/715637

Inventors:

Donald N. Jensen - Roseville MN
Linda L. Ruetz - New Brighton MN
Catherine R. Condie - Shoreview MN
Yong Kyun Cho - Maple Grove MN
Ulla Strobel - Zurich, CH
Scott Davie - St. Paul MN

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1365

US Classification:

600536, 600547, 607 18

Abstract:

An implantable device having enhanced capabilities for monitoring a patients heart rate and respiration trends over extended periods of time is disclosed. The information collected by the implantable device may be stored and telemetered to an associated external device such as a device programmer for display and analysis. Heart rates are measured by measuring the time intervals between sensed depolarizations of a chamber of the patients heart and preceding sensed depolarizations or delivered pacing pulses. Intervals may be measured in the ventricle and/or atrium of the patients heart. According to another aspect of the invention, an implanted impedance sensor is employed to monitor minute ventilation. The heart rate and minute ventilation data is used to develop long-term trend data used for diagnostic purposes. In one embodiment of the invention, heart interval and minute ventilation measurements are taken only during defined time periods of the night and/or day when the patient is at rest.

US Patent:

20180098704, Apr 12, 2018

Filed:

Dec 11, 2017

Appl. No.:

15/837388

Inventors:

- Minneapolis MN, US
VenKatesh R. Manda - Stillwater MN, US
Martin T. Gerber - Maple Grove MN, US
Christopher M. Hobot - Rogers MN, US
Linda L. Ruetz - New Brighton MN, US
Carl Schu - Plymouth MN, US

International Classification:

A61B 5/0205
A61B 5/0452
A61B 5/00
A61B 5/0488
A61B 5/145
A61B 5/20
B01D 61/24
B01D 61/32
B01D 65/02

Abstract:

A medical monitoring device for monitoring electrical signals from the body of a subject is described. The medical monitoring device monitors electrical signals originating from a cardiac cycle of the subject and associates each cardiac cycle with a time index. The medical monitoring device applies a forward computational procedure to generate a risk score indicative of hyperkalemia, hypokalemia or arrhythmia of the subject. The medical monitoring device can adjust the forward computational procedure based upon clinical data obtained from the subject.

US Patent:

20160367168, Dec 22, 2016

Filed:

Jun 20, 2016

Appl. No.:

15/187286

Inventors:

- St. Paul MN, US
Anthony D. Hill - Minneapolis MN, US
Cable P. Thompson - St. Paul MN, US
Linda Ruetz - New Brighton MN, US

International Classification:

A61B 5/06

Abstract:

A location of a number of fiducial points can be computed. The fiducial points can include impedance locations of an electrode disposed on a catheter in an impedance based coordinate system and magnetic locations of a magnetic position sensor disposed on the catheter in a magnetic based coordinate system. The impedance location of the electrode in the impedance based coordinate system can be transformed into a transformed impedance location of the electrode in the magnetic based coordinate system. A magnetic location of the electrode in the magnetic based coordinate system can be determined. A determination of whether an impedance shift exists between the transformed impedance location of the electrode in the magnetic based system and the magnetic location of the electrode in the magnetic based system can be made. An electromagnetic dynamic registration can be generated between the impedance based coordinate system and the magnetic based coordinate system based on the impedance shift.

US Patent:

20140088442, Mar 27, 2014

Filed:

Mar 15, 2013

Appl. No.:

13/844257

Inventors:

- Minneapolis MN, US
VenKatesh R. Manda - Stillwater MN, US
Martin T. Gerber - Maple Grove MN, US
Christopher M. Hobot - Tonka Bay MN, US
Linda L. Ruetz - New Brighton MN, US
Carl Schu - Plymouth MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61B 5/0205
A61B 5/0452
A61B 5/0488

US Classification:

600483, 600546, 600515

Abstract:

A medical monitoring device for monitoring electrical signals from the body of a subject is described. The medical monitoring device monitors electrical signals originating from a cardiac cycle of the subject and associates each cardiac cycle with a time index. The medical monitoring device applies a forward computational procedure to generate a risk score indicative of hyperkalemia, hypokalemia or arrhythmia of the subject. The medical monitoring device can adjust the forward computational procedure based upon clinical data obtained from the subject.