Steven Jonathan Duke

US Patent:

20120016279, Jan 19, 2012

Filed:

Jul 12, 2011

Appl. No.:

13/181384

Inventors:

Isabelle L. Banville - Newcastle WA, US
Fred W. Chapman - Renton WA, US
Joseph L. Sullivan - Kirkland WA, US
Steven Duke - Edmonds WA, US

International Classification:

A61H 31/00

US Classification:

601 41

Abstract:

Embodiments of the present concept are directed to CPR chest compression machines that include a sensor to detect a parameter about a patient, such as an indication of patient recovery, and include a processor that determines whether to cease series of successive compressions on the patient in response to the detected parameter.

US Patent:

59405090, Aug 17, 1999

Filed:

Nov 18, 1997

Appl. No.:

8/972905

Inventors:

Alan F. Jovanovich - Des Moines WA
Bruce G. Warren - Poulsbo WA
Duane G. Charron - Marysville WA
Steven B. Duke - Bothell WA

Assignee:

Intermec IP Corp. - Woodland Hills CA

International Classification:

H04L 932

US Classification:

380 23

Abstract:

A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises a host processor and a remote device capable of communicating with the host processor over a communication link. The host processor has a plurality of stored data sets and a predefined encryption algorithm. Each one of the stored data sets comprises a country specific frequency allocation. The remote device has a unique identifier code and also has the predefined encryption algorithm. Responsive to the unique identifier code, the host processor provides a selected one of the plurality of data sets in encrypted form by utilizing the predefined encryption algorithm. The unique identifier code provides an encryption key for the predefined encryption algorithm. The remote device then decrypts the encrypted data set using the predefined encryption algorithm with the identifier code as a decryption key.

US Patent:

53007697, Apr 5, 1994

Filed:

Dec 29, 1992

Appl. No.:

7/999495

Inventors:

Jeffrey J. Dahlin - Bothell WA
John F. Holic - Seattle WA
William G. Lundell - Redmond WA
Steven B. Duke - Bothell WA
Jeffrey B. Yim - Honolulu HI

Assignee:

Abbott Laboratories - Abbott Park IL

International Classification:

G01N 3348
A61B 500

US Classification:

25022723

Abstract:

A method and system for controlling the intervals during which light signals are sampled in a fiber-optic sensing system compensates for signal artifacts that are caused by movement of the fiber-optic waveguide during the sampling. The method and system sample the light signals at intervals that are shorter than the intervals during which displacement of the optical waveguide occurs in normal use. The short-sampling intervals result in the individual sampling of different wavelengths of light being exposed to the same changes in transmission characteristics of the optical waveguide which causes signal artifacts. Accordingly, when subsequent processing of the collected signals occurs, the effects of the signal artifacts are compensated for.

US Patent:

57039500, Dec 30, 1997

Filed:

Jun 30, 1995

Appl. No.:

8/497698

Inventors:

Alan F. Jovanovich - Des Moines WA
Bruce G. Warren - Poulsbo WA
Duane G. Charron - Marysville WA
Steven B. Duke - Bothell WA

Assignee:

Intermec Corporation - Everett WA

International Classification:

H04L 932

US Classification:

380 23

Abstract:

A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises a host processor and a remote device capable of communicating with the host processor over a communication link. The host processor has a plurality of stored data sets and a predefined encryption algorithm. Each one of the stored data sets comprises a country specific frequency allocation. The remote device has a unique identifier code and also has the predefined encryption algorithm. Responsive to the unique identifier code, the host processor provides a selected one of the plurality of data sets in encrypted form by utilizing the predefined encryption algorithm. The unique identifier code provides an encryption key for the predefined encryption algorithm. The remote device then decrypts the encrypted data set using the predefined encryption algorithm with the identifier code as a decryption key.

US Patent:

53298047, Jul 19, 1994

Filed:

Oct 16, 1992

Appl. No.:

7/962990

Inventors:

Cheryl D. Germany - Kirkland WA
Conrad T. Oi Fong - Redmond WA
Steven B. Duke - Bothell WA
Gerald G. Vurek - Mountain View CA

Assignee:

Abbott Laboratories - Abbott Park IL

International Classification:

G01N 3300

US Classification:

73 1G

Abstract:

A calibration system and method for calibrating a medical sensor (16) that monitors chemical blood gases. A calibrator (12) is used in connection with a tray (14) in which the medical sensor is stored in a sterile environment, both before and during the calibration process. The medical sensor is immersed in a liquid (30) in a tonometry chamber (28) defined in the tray and covered by a membrane (120/122) that is permeable to gas, but impermeable to bacteria. During the calibration process, the tray is inserted into the calibrator, bringing a heated platen (26) into contact with the tonometry chamber, so that the liquid can be heated to a calibration temperature substantially equal to the temperature at which the medical sensor will subsequently be used. A first calibration gas is then bubbled through the liquid until a saturated condition is achieved. Once the temperature of the liquid is increased to the desired calibration temperature, as determined by a temperature sensor on the medical sensor, data for a first calibration point is taken.

US Patent:

59219386, Jul 13, 1999

Filed:

Oct 9, 1997

Appl. No.:

8/948630

Inventors:

David D. Aoyama - Seattle WA
Steven B. Duke - Bothell WA
John Giaever - Seattle WA

Assignee:

Physio-Control Manufacturing Corporation - Redmond WA

International Classification:

A61B 500

US Classification:

600509

Abstract:

A system synchronizes the time of a clock of an electronic physiological instrument with time of a remote time base. The electronic physiological instrument records medical event data and electronically associates event time with the event data While recording, or after recording, the medical event data, the electronic physiological instrument is placed in data communication with the remote time base over a data connection. The remote time base initially determines a reference time from a master clock. The remote time base also transmits a request to the electronic physiological instrument for a current time from a clock in the electronic physiological instrument. If a response is not received from the electronic physiological instrument within a first time period, the clock is not synchronized with the remote time base. If a response is received within the first time period, a time difference is determined between the reference time and the time transmitted from the electronic physiological instrument by subtracting the two times. The time difference is then electronically associated with the medical event data.

US Patent:

20220193429, Jun 23, 2022

Filed:

Dec 22, 2021

Appl. No.:

17/559992

Inventors:

- Kalamazoo MI, US
Steven Barry Duke - Bothell WA, US
Robert P. Marx - Kent WA, US
Daniel W Piraino - Seattle WA, US
Tyson G. Taylor - Bothell WA, US

International Classification:

A61N 1/39
G16H 20/30
G16H 40/63
G16H 50/30

Abstract:

Systems, devices, and methods provide up-to-date defibrillation shock recommendations. In an example method, multiple segments of an electrocardiogram (ECG) of an individual are detected from an individual receiving chest compressions. The multiple segments are evaluated to determine whether the individual is exhibiting a shockable heart rhythm. A medical device outputs a recommendation indicating whether a defibrillation shock is advised based on the most recent determination of the individual's heart rhythm. For example, the medical device outputs an up-to-date recommendation on-demand in response to an input signal from a user. In some examples, the medical device updates the recommendation based on ongoing analysis of the ECG.

US Patent:

20220193431, Jun 23, 2022

Filed:

Dec 22, 2021

Appl. No.:

17/559925

Inventors:

- Kalamazoo MI, US
Ryan William Apperson - Bothell WA, US
Dale R. Beuning - Seattle WA, US
Steven Barry Duke - Bothell WA, US
Thangeswaran Natarajan - Bothell WA, US
Daniel W. Piraino - Seattle WA, US
Mark Rutzer - Seattle WA, US
David B. Stewart - Carnation WA, US
Tyson G. Taylor - Bothell WA, US

International Classification:

A61N 1/39

Abstract:

Defibrillators with enhanced functionality during cardiopulmonary resuscitation (CPR) periods are described. The enhancements include predicting a length of a charging period of a capacitor of the medical device so that capacitor is shock charged at the end of the CPR period. The enhancements also include re-assessing an electrocardiogram (ECG) signal for continued presence of a shockable rhythm during the CPR period and before administration of a defibrillation shock. Together the enhancements can improve the timing and recommended administration of defibrillation therapy.