Darrell L Wagner

US Patent:

6546287, Apr 8, 2003

Filed:

Oct 6, 2000

Appl. No.:

09/680790

Inventors:

William J. Havel - Maple Grove MN
Joe D. Bourland - West Lafayette IN
Leslie A. Geddes - Lafayette IN
Willis A. Tacker - Lafayette IN
Darrell O. Wagner - Isanti MN

Assignee:

Purdue Research Foundation - West Lafayette IN

International Classification:

A61N 136

US Classification:

607 7, 607 8

Abstract:

A controlled-power defibrillator and method of defibrillation for automatically compensating for changes in patient resistance during delivery of a defibrillation pulse. A switching power converter is connected between a storage capacitor and a pair of electrodes adapted for connection to a patients body, either internally or externally. A closed-loop power control circuit is operatively connected to the power converter for control of the power delivered to the patient, the power control circuit generating a target voltage signal for the storage capacitor, the target voltage signal having a defined relationship with the waveform of the power desired to be delivered to the patient. The power control circuit monitors the actual voltage on the storage capacitor and adjusts the delivery of power to the patient as a function of the difference between desired and actual storage capacitor voltage. The power converter is adapted to capture energy from the discharge of an existing defibrillator and to convert captured energy from the existing defibrillator to a waveform different from that generated by the existing defibrillator.

US Patent:

7349742, Mar 25, 2008

Filed:

Dec 23, 2003

Appl. No.:

10/745341

Inventors:

Ron Heil - Roseville MN, US
Darrell Orvin Wagner - Isanti MN, US
Adam W. Cates - Minneapolis MN, US
Curtis Charles Lindstrom - Roseville MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/05

US Classification:

607116

Abstract:

Subcutaneous systems and leads may be fixed in tissue after placement by use of one or more expanding fixation elements. An expanding fixation element is provided on an implantable lead and configured to secure one or both of a subcutaneous electrode and the lead body within subcutaneous non-intrathoracic tissue. A delivery apparatus comprising a sheath may be included that is configured to introduce the lead to a desired subcutaneous non-intrathoracic location within the patient. A method of lead delivery typically involves introducing a sheath into a subcutaneous non-intrathoracic body location of a patient, providing a lead comprising a lead body and an electrode, and advancing the lead through the sheath and to the subcutaneous non-intrathoracic body location. The method further involves fixing the lead to subcutaneous non-intrathoracic tissue using an expanding fixation element and thereafter removing the sheath from the patient.

US Patent:

7499750, Mar 3, 2009

Filed:

Dec 17, 2003

Appl. No.:

10/738608

Inventors:

Paul Haefner - Circle Pines MN, US
Darrell Orvin Wagner - Isanti MN, US
Jason Alan Shiroff - Shoreview MN, US
Marina Brockway - Shoreview MN, US
Apurv Kamath - Solana Beach CA, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61B 5/04
A61N 1/08
A61N 1/37

US Classification:

607 27, 607 62, 600509

Abstract:

Implementing a subcutaneous medical electrode system involves positioning a number of electrode subsystems in relation to a heart so that noise cancellation provides an improved signal to noise ratio of the cardiac signal and/or to provide one electrode arrangement preferential for cardiac signals and another arrangement preferential for noise signals. One of the electrode subsystems so positioned may include one or more can electrodes located on a housing enclosing a medical device. The medical device may be configured to provide therapeutic, diagnostic, or monitoring functions, including, for example, cardiac arrhythmia therapy.

US Patent:

7529592, May 5, 2009

Filed:

Nov 7, 2003

Appl. No.:

10/703410

Inventors:

Adam W. Cates - Minneapolis MN, US
Darrell Orvin Wagner - Isanti MN, US
Curtis Charles Lindstrom - Roseville MN, US
Ron Heil - Roseville MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/08

US Classification:

607120

Abstract:

An implantable subcutaneous device and method employ a lead and an electrode for cardiac monitoring and intervention. The device includes an implantable lead having a lead body, a subcutaneous electrode coupled to the lead body, and a pharmacological agent provided on the implantable lead and/or electrode. The pharmacological agent provides a temporary therapeutic treatment to subcutaneous non-intrathoracic tissue. A method of implanting subcutaneous leads involves providing a lead including a lead body, a subcutaneous electrode, and a pharmacological agent, and delivering the pharmacological agent to subcutaneous non-intrathoracic tissue surrounding the lead.

US Patent:

7570997, Aug 4, 2009

Filed:

Apr 8, 2004

Appl. No.:

10/820642

Inventors:

Eric G. Lovett - Roseville MN, US
Adam W. Cates - Minneapolis MN, US
Darrell Orvin Wagner - Isanti MN, US
Mike Favet - San Jose CA, US
Apurv Kamath - Solana Beach CA, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/362

US Classification:

607 14, 67 4, 67 10, 67 63

Abstract:

Systems and methods provide for sensing of cardiac activity from a subcutaneous, non-intrathoracic location, and detecting a cardiac condition necessitating treatment in response to the sensed cardiac activity. One of a number of cardiac therapies may be selectively delivered to treat the detected cardiac condition, such cardiac therapies including at least a tachycardia therapy, a bradycardia therapy, and an asystole prevention therapy.

US Patent:

7702399, Apr 20, 2010

Filed:

Dec 4, 2003

Appl. No.:

10/728072

Inventors:

Ron Heil - Roseville MN, US
Paul A. Haefner - Circle Pines MN, US
Adam W. Cates - Minneapolis MN, US
Darrell Orvin Wagner - Isanti MN, US
Curtis Charles Lindstrom - Roseville MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/05

US Classification:

607120, 607 3

Abstract:

An implantable subcutaneous device includes a lead and electrode for cardiac monitoring and intervention. The device has an implantable lead including a lead body, a subcutaneous electrode supported by the lead body and a pharmacological agent impelled from the device using phoresis. The pharmacological agent provides a therapeutic treatment to subcutaneous non-intrathoracic tissue. A method of implanting subcutaneous leads involves providing a lead including a lead body, a subcutaneous electrode, and a pharmacological agent and using phoresis to impel the pharmacological agent into subcutaneous non-intrathoracic tissue surrounding the lead.

US Patent:

7885710, Feb 8, 2011

Filed:

Dec 23, 2005

Appl. No.:

11/318263

Inventors:

Haris J. Sih - Minneapolis MN, US
Tamara Colette Baynham - Blaine MN, US
Darrell O. Wagner - Isanti MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/372

US Classification:

607 3

Abstract:

A stimulation system delivers stimulation to protect an ischemic region of a body from tissue damage caused by ischemia. The stimulation is delivered to one or more stimulation sites remote from the ischemic region to elicit a physiological effect that protects the ischemic region from the tissue damage caused by ischemia. In one embodiment, the stimulation system delivers cardioprotective stimulation to one or more stimulation sites remote from the heart to protect the heart from injuries associated with cardiac ischemic events. In another embodiment, the stimulation system delivers remote conditioning stimulation to one or more stimulation sites in or on the heart to protect a non-cardiac region from injuries associated with non-cardiac ischemic events.

US Patent:

8568286, Oct 29, 2013

Filed:

Jun 14, 2006

Appl. No.:

11/424107

Inventors:

Haris J. Sih - Minneapolis MN, US
Craig Stolen - New Brighton MN, US
Jihong Ou - Maple Grove MN, US
Darrell O. Wagner - Isanti MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 2/00

US Classification:

600 12, 600 11, 128899

Abstract:

A system for controlling the location of a therapeutic agent administered to a mammal is provided. The system employs a device that is capable of generating a magnetic field and a therapeutic agent labeled with a magnetically responsive moiety. Methods which employ the device and the therapeutic agent are also provided.