Douglas J Gifford

Author:

Douglas Gifford

ISBN #:

0050031988

Author:

Douglas Gifford

ISBN #:

0080350569

Author:

Douglas Gifford

ISBN #:

0701118601

Author:

Douglas Gifford

ISBN #:

0805238573

Author:

Douglas Gifford

ISBN #:

0748607420

Author:

Douglas Gifford

ISBN #:

0748608257

Author:

Douglas Gifford

ISBN #:

0748609164

Author:

Douglas Gifford

ISBN #:

0851581153

US Patent:

8060204, Nov 15, 2011

Filed:

Feb 27, 2009

Appl. No.:

12/394693

Inventors:

Paul Huelskamp - St. Paul MN, US
Douglas J. Gifford - Ham Lake MN, US
Scott A. Reedstrom - Vadnais Heights MN, US
Keith R. Maile - New Brighton MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/00

US Classification:

607 27

Abstract:

An apparatus comprises an implantable medical device that includes a storage circuit. The storage circuit includes a first stage circuit configured to receive an input signal and to invert and store information about a data bit received in the input signal, a second stage circuit coupled to the output of the first stage circuit to invert and store information about a data bit received from the first stage circuit, and an error circuit coupled to the output of the first stage circuit and an output of the second stage circuit. The error circuit generates an error indication when the storage circuit outputs match while the first stage circuit and the second stage circuit are in an inactive state.

US Patent:

8509910, Aug 13, 2013

Filed:

Dec 4, 2008

Appl. No.:

12/328454

Inventors:

Conrad L. Sowder - Minneapolis MN, US
Thomas J. Harris - Shoreview MN, US
Douglas J. Gifford - Ham Lake MN, US
William J. Linder - Golden Valley MN, US
Hiten J. Doshi - Plymouth MN, US
Scott R. Stubbs - Maple Grove MN, US
Kenneth P. Hoyme - Plymouth MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/02

US Classification:

607 60, 607 32

Abstract:

This document discusses, among other things, an implantable device comprising a communication circuit configured to communicate with an external device, a logic circuit communicatively coupled to the communication circuit, and a processor, communicatively coupled to the logic circuit and the communication circuit. The processor is configured to communicate information with the external device, via the communication circuit and the logic circuit, using a set of communication messages. While in a device safety mode, the processor is held in an inactive state and the logic circuit is configured to communicate with the external device using a subset of the set of communication messages.

US Patent:

20130245718, Sep 19, 2013

Filed:

Feb 28, 2013

Appl. No.:

13/780903

Inventors:

Doug M. Birkholz - Shoreview MN, US
Douglas J. Brandner - New Brighton MN, US
Douglas J. Gifford - Ham Lake MN, US
David J. Ternes - Roseville MN, US
William J. Linder - Golden Valley MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/36

US Classification:

607 59, 607 72

Abstract:

Various implantable device embodiments may comprise a neural stimulator configured to deliver a neurostimulation therapy with stimulation ON times and stimulation OFF times where a dose of the neurostimulation therapy is provided by a number of neurostimulation pulses over a period of time. The neural stimulator may be configured to monitor the dose of the delivered neurostimulation therapy against dosing parameters. The neural stimulator may be configured to declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy, or may be configured to record data for the monitored dose of the delivered neurostimulation therapy, or may be configured to both record data for the monitored dose of the delivered neurostimulation therapy and declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy.

US Patent:

20210008378, Jan 14, 2021

Filed:

Sep 29, 2020

Appl. No.:

17/037241

Inventors:

- St. Paul MN, US
Douglas J. Brandner - New Brighton MN, US
Douglas J. Gifford - Ham Lake MN, US
David J. Ternes - Roseville MN, US
William J. Linder - Golden Valley MN, US

International Classification:

A61N 1/372
A61N 1/36
A61N 1/378

Abstract:

Various implantable device embodiments may comprise a neural stimulator configured to deliver a neurostimulation therapy with stimulation ON times and stimulation OFF times where a dose of the neurostimulation therapy is provided by a number of neurostimulation pulses over a period of time. The neural stimulator may be configured to monitor the dose of the delivered neurostimulation therapy against dosing parameters. The neural stimulator may be configured to declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy, or may be configured to record data for the monitored dose of the delivered neurostimulation therapy, or may be configured to both record data for the monitored dose of the delivered neurostimulation therapy and declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy.

US Patent:

20170100594, Apr 13, 2017

Filed:

Oct 7, 2016

Appl. No.:

15/288500

Inventors:

- St. Paul MN, US
Michael J. Kane - Roseville MN, US
Douglas J. Gifford - Ham Lake MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/365
A61N 1/362
A61N 1/375

Abstract:

Systems, devices, and methods are disclosed for limiting the duration of elevated pacing rates in an implantable medical device. An illustrative device may include a housing, a plurality of electrodes connected to the housing, and a controller within the housing and connected to the electrodes. The controller may deliver pacing pulses to the electrodes at a base pacing rate, detect a measure of elevated metabolic demand which may vary over time, deliver pacing pulses at an elevated pacing rate based on the measure of elevated metabolic demand. The controller may change a heart stress tracking value (HSTV) when the pacing rate is elevated and may be changed faster during times of relatively higher elevated pacing rates than times of relatively lower elevated pacing rates. The elevated pacing rate may be reduced back toward the base pacing rate after the HSTV crossed a predetermined heart stress threshold.

US Patent:

20170014634, Jan 19, 2017

Filed:

Sep 28, 2016

Appl. No.:

15/278113

Inventors:

- St. Paul MN, US
Douglas J. Brandner - New Brighton MN, US
Douglas J. Gifford - Ham Lake MN, US
David J. Ternes - Roseville MN, US
William J. Linder - Golden Valley MN, US

International Classification:

A61N 1/372
A61N 1/378
A61N 1/36

Abstract:

Various implantable device embodiments may comprise a neural stimulator configured to deliver a neurostimulation therapy with stimulation ON times and stimulation OFF times where a dose of the neurostimulation therapy is provided by a number of neurostimulation pulses over a period of time. The neural stimulator may be configured to monitor the dose of the delivered neurostimulation therapy against dosing parameters. The neural stimulator may be configured to declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy, or may be configured to record data for the monitored dose of the delivered neurostimulation therapy, or may be configured to both record data for the monitored dose of the delivered neurostimulation therapy and declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy.

US Patent:

20150151131, Jun 4, 2015

Filed:

Nov 19, 2014

Appl. No.:

14/547728

Inventors:

- St. Paul MN, US
Douglas J. Gifford - Ham Lake MN, US
Scott A. Reedstrom - Vadnais Heights MN, US

International Classification:

A61N 1/37
A61N 1/372

Abstract:

An implantable medical device comprises a non-volatile memory circuit including a configuration memory portion to store auto-configuration data for the IMD, a controller circuit, a reset circuit adapted to generate a reset signal and disable the controller circuit, and a startup circuit adapted to transfer the auto-configuration data from the configuration memory portion to one or more configuration registers in response to the reset signal, wherein values of the one or more configuration registers configure the IMD for a safety mode operation.

US Patent:

20150148867, May 28, 2015

Filed:

Feb 3, 2015

Appl. No.:

14/612799

Inventors:

- St. Paul MN, US
Douglas J. Brandner - New Brighton MN, US
Douglas J. Gifford - Ham Lake MN, US
David J. Ternes - Roseville MN, US
William J. Linder - Golden Valley MN, US

International Classification:

A61N 1/372
A61N 1/378

US Classification:

607 59, 607 64

Abstract:

Various implantable device embodiments may comprise a neural stimulator configured to deliver a neurostimulation therapy with stimulation ON times and stimulation OFF times where a dose of the neurostimulation therapy is provided by a number of neurostimulation pulses over a period of time. The neural stimulator may be configured to monitor the dose of the delivered neurostimulation therapy against dosing parameters. The neural stimulator may be configured to declare a fault if the monitored dose does not favorably compare to a desired dose for the neurostimulation therapy, or may be configured to record data for the monitored dose of the delivered neurostimulation therapy, or may be configured to both record data fir the monitored dose of the delivered neurostimulation therapy and declare a fault if the monitored dose does riot favorably compare to a desired dose for the neurostimulation therapy.