Jeffrey D Wilkinson

US Patent:

6456875, Sep 24, 2002

Filed:

Oct 12, 1999

Appl. No.:

09/416667

Inventors:

Jeffrey D. Wilkinson - Vadnais Heights MN
Kevin K. Walsh - Peoria AZ
Robert W. Hocken - Scottsdale AZ

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

H03M 1309

US Classification:

607 2, 714799, 714781, 607 31, 607 60, 607 32

Abstract:

Cyclic redundancy calculations are provided by operating on a data stream, e. g. , a data stream in an implantable medical device, to perform a polynomial division thereon using one of a first cyclic redundancy code generator polynomial and a second cyclic redundancy code generator polynomial. The first cyclic redundancy code generator polynomial is a higher order polynomial than the second cyclic redundancy code generator polynomial and contains all terms of the second cyclic redundancy code generator polynomial. The polynomial division may be implemented using linear feedback shift register circuitry and circuitry to select between the use of the first or second cyclic redundancy code generator polynomial.

US Patent:

6584356, Jun 24, 2003

Filed:

Jan 5, 2001

Appl. No.:

09/755425

Inventors:

Paul G. Wassmund - Bethel MN
Paul A. Penrose - Hastings MN
Donald Johnson - Lino Lakes MN
Jeffrey David Wilkinson - Vadnais Heights MN

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 120

US Classification:

607 30, 607 4, 607 9, 607 55

Abstract:

A method is provided, the method comprising controlling an implantable medical device using a controller using a pre-emptive real-time operating system (RTOS) having a scheduling mechanism utilizing a priority inheritance protocol, the controller having a firmware architecture allowing at least one of modular feature design, modular feature implementation, extensible feature design and extensible feature implementation. The device also comprises analyzing the pre-emptive real-time operating system (RTOS) using rate monotonic analysis, providing an interface with downloadable software for the implantable medical device and backing up at least some of the downloadable software using a non-volatile memory device, protecting the at least some of the downloadable software from a reset of the implantable medical device.

US Patent:

6704602, Mar 9, 2004

Filed:

Oct 29, 1999

Appl. No.:

09/423101

Inventors:

Gary Berg - Edina MN
Jill H. Ernst - Apple Valley MN
Chester G. Nelson - Maple Grove MN
Charles Stomberg - Forest Lake MN
Jeffrey D. Wilkinson - Vadnais Heights MN

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1362

US Classification:

607 60

Abstract:

A medical device communications system uses subthreshold pulses, modulated to provide relatively high speed electrical communications with inexpensive external devices connectable to a body with the implant by surface leads.

US Patent:

6871091, Mar 22, 2005

Filed:

Oct 31, 2001

Appl. No.:

09/999381

Inventors:

Jeffrey D. Wilkinson - Vadnais Heights MN, US
James D. Reinke - Maple Grove MN, US
Volkert A. Zeijlemaker - Landgraaf, NL

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N001/08

US Classification:

607 2

Abstract:

An electrical lead includes an elongate body having a proximal end portion and a distal end portion, a first electrode disposed adjacent and joined to the distal end portion of the elongate body, and a first conductor extending between the proximal end portion and the distal end portion of the elongate body and being electrically coupled to the first electrode. The medical electrical lead further comprises a second electrode disposed adjacent the first electrode and joined to the elongate body and a capacitive device electrically coupled to the first conductor and the second electrode.

US Patent:

6985775, Jan 10, 2006

Filed:

Jan 29, 2002

Appl. No.:

10/059601

Inventors:

James D. Reinke - Maple Grove MN, US
Jeffrey D. Wilkinson - Vadnais Heights MN, US
Ron Kalin - New Hope MN, US
Laurie D. Foerster - Mound MN, US
Volkert A. Zeijlemaker - Landgraaf, NL

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/05

US Classification:

607116

Abstract:

An electrical lead end cap includes a body defining a bore therein capable of receiving and retaining an end of an electrical lead and a connector capable of electrically coupling conductors leading to at least two electrodes. A method includes routing an electrical current induced in an electrical lead conductor disposed within body tissue to a plurality of electrodes, electrically coupled with the body tissue, via a circuit within an end cap attached to the electrical lead.

US Patent:

7697988, Apr 13, 2010

Filed:

Mar 31, 2005

Appl. No.:

11/096671

Inventors:

Wesley J. Clement - Andover MN, US
Hiroshi Fujimoto - Fujisawa, JP
Jeffrey D. Wilkinson - Vadnais Heights MN, US
John R. Buysman - Coon Rapids MN, US
Girard B. Borgerding - Miineapolis MN, US
Jean Borgerding, legal representative - Minneapolis MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61N 1/00

US Classification:

607 17

Abstract:

An implantable medical device (IMD) includes a detector for detecting the presence of x-ray radiation, where the presence of x-ray radiation is detected in response to the strength of the x-ray radiation exceeding a first threshold. In one embodiment, the IMD includes a processor for adjusting a cardiac stimulation rate IMD in response to determining that the strength of the detected x-ray radiation exceeds a second threshold. The second pre-selected x-ray radiation threshold is greater than the first pre-selected x-ray radiation threshold. In another embodiment, the implantable device includes a detector for detecting the presence of any amount x-ray radiation and a processor for adjusting a stimulation rate provided by the IMD in response to detected x-ray radiation to reduce the chance of over-sampling artifacts or inappropriate therapy delivery.

US Patent:

7935935, May 3, 2011

Filed:

Feb 27, 2009

Appl. No.:

12/394179

Inventors:

Jonathan P. Roberts - Coon Rapids MN, US
James D. Reinke - Maple Grove MN, US
Jeffrey D. Wilkinson - Vadnais Heights MN, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

G01J 1/42

US Classification:

250393

Abstract:

A radiation-based timer for use in an implantable medical device (IMD) includes a radiation source and a radiation detection circuit. The radiation source emits radiation particles during a process referred to as radioactive decay. The radiation detection circuit detects the radiation particles emitted during the decay process and tracks the number of radiation particles detected. When the number of radiation particles detected reaches a threshold value, a timer signal is generated. In this manner, the radiation-based timer generates a timer signal as a function of the radioactive decay of the radiation source. The timer signal may be used by one or more components of the IMD for any of a number of functions, including as a wakeup trigger for a communications and/or a sensor event.

US Patent:

20040172104, Sep 2, 2004

Filed:

Jan 22, 2004

Appl. No.:

10/763989

Inventors:

Gary Berg - Edina MN, US
Jill Emst - Apple Valley MN, US
Chester Nelson - Maple Grove MN, US
Charles Stomberg - Forest Lake MN, US
Jeffrey Wilkinson - Vadnais Heights MN, US

Assignee:

Medtronic, Inc.

International Classification:

A61N001/18

US Classification:

607/060000

Abstract:

A medical device communications system uses subthreshold pulses, modulated to provide relatively high speed electrical communications with inexpensive external devices connectable to a body with the implant by surface leads.