Jonathan T Kwok

US Patent:

7630763, Dec 8, 2009

Filed:

Apr 20, 2005

Appl. No.:

11/110418

Inventors:

Jonathan Kwok - Shoreview MN, US
Kent Lee - Shoreview MN, US
Jesse W. Hartley - Lino Lakes MN, US
Jeffrey E. Stahmann - Ramsey MN, US
Yinghong Yu - Shoreview MN, US
Jiang Ding - Maplewood MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61B 5/053
A61B 5/0295

US Classification:

607 6, 607 27, 607 28

Abstract:

This document discusses, among other things, a cardiac function management device or other implantable medical device that includes a test mode and a diagnostic mode. During a test mode, the device cycles through various electrode configurations for collecting thoracic impedance data. At least one figure of merit is calculated from the impedance data for each such electrode configuration. In one example, only non-arrhythmic beats are used for computing the figure of merit. A particular electrode configuration is automatically selected using the figure of merit. During a diagnostic mode, the device collects impedance data using the selected electrode configuration. In one example, the figure of merit includes a ratio of a cardiac stroke amplitude and a respiration amplitude. Other examples of the figure of merit are also described.

US Patent:

7672728, Mar 2, 2010

Filed:

Dec 28, 2005

Appl. No.:

11/320500

Inventors:

Imad Libbus - St. Paul MN, US
Anthony Caparso - St. Louis Park MN, US
M. Jason Brooke - Minneapolis MN, US
Jonathan Kwok - Shoreview MN, US
Kent Lee - Shoreview MN, US
Yachuan Pu - Minneapolis MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/00

US Classification:

607 42

Abstract:

Various aspects relate to an implantable device. Various device embodiments include at least one sensor for use in detecting sleep disordered breathing, a pulse generator adapted to deliver a first electrical signal through at least one electrode to stimulate a neural target, and a controller adapted to communicate with the at least one sensor and with the pulse generator. The controller is adapted to detect sleep disordered breathing using the at least one sensor and provide a therapy for sleep disordered breathing in response to a detected apneic event. The therapy for sleep disordered breathing is adapted to deliver the first electrical signal through the at least one electrode to induce a cough reflex to terminate the apneic event. Various embodiments stimulate a superior laryngeal nerve, various embodiments stimulate a recurrent laryngeal nerve, and various embodiments stimulate a vagus nerve. Other aspects and embodiments are provided herein.

US Patent:

7766840, Aug 3, 2010

Filed:

Dec 1, 2005

Appl. No.:

11/291525

Inventors:

Jonathan Kwok - Shoreview MN, US
Marina Brockway - Shoreview MI, US
Kent Lee - Shoreview MN, US
Quan Ni - Shoreview MN, US
Yachuan Pu - Minneapolis MN, US
Jeffrey Stahmann - Ramsey MN, US
Yi Zhang - Blaine MN, US
Jesse Hartley - Lino Lakes MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61B 5/08
A61B 5/02

US Classification:

600508, 600529, 600533

Abstract:

An evaluation of heart failure status is provided based on a disordered breathing index. Patient respiration is sensed and a respiration signal is generated. Disordered breathing episodes are detected based on the respiration signal. A disordered breathing index is determined based on the disordered breathing episodes. The disordered breathing index is trended and used to evaluate heart failure status. The disordered breathing index may be combined with additional information and/or may take into account patient activity, posture, sleep stage, or other patient information.

US Patent:

7783356, Aug 24, 2010

Filed:

Jun 29, 2006

Appl. No.:

11/427407

Inventors:

Shelley Cazares - Minneapolis MN, US
Dan Li - Shoreview MN, US
Jonathan Kwok - Shoreview MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/362

US Classification:

607 32, 607 30, 607 31

Abstract:

This document discusses, among other things, methods and systems for facilitating automated device programming at changeout. A method comprises receiving, from a first device, physiological data at a temporary storage device; and processing the received physiological data, wherein the processing includes determining if a first signal processing function was used by the first device and substantially offsetting the first signal processing function if the first signal processing function was used by the first device; and processing the resultant physiological data to be compatible with a second device. The method further comprising providing the processed resultant physiological data to the second device.

US Patent:

7797050, Sep 14, 2010

Filed:

Jan 21, 2010

Appl. No.:

12/691392

Inventors:

Imad Libbus - St. Paul MN, US
Anthony V. Caparso - San Jose CA, US
M. Jason Brooke - Woodstock MD, US
Jonathan Kwok - Denville NJ, US
Kent Lee - Shoreview MN, US
Yachuan Pu - San Diego CA, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/00

US Classification:

607 42

Abstract:

Various aspects relate to an implantable device. Various device embodiments include at least one sensor for use in detecting sleep disordered breathing, a pulse generator adapted to deliver a first electrical signal through at least one electrode to stimulate a neural target, and a controller adapted to communicate with the at least one sensor and with the pulse generator. The controller is adapted to detect sleep disordered breathing using the at least one sensor and provide a therapy for sleep disordered breathing in response to a detected apneic event. The therapy for sleep disordered breathing is adapted to deliver the first electrical signal through the at least one electrode to induce a cough reflex to terminate the apneic event. Various embodiments stimulate a superior laryngeal nerve, various embodiments stimulate a recurrent laryngeal nerve, and various embodiments stimulate a vagus nerve. Other aspects and embodiments are provided herein.

US Patent:

7809441, Oct 5, 2010

Filed:

May 17, 2006

Appl. No.:

11/383933

Inventors:

Michael John Kane - Lake Elmo MN, US
Jeffrey Allen Von Arx - Minneapolis MN, US
James Gregory Bentsen - North St. Paul MN, US
Jonathan Kwok - Shoreview MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61N 1/08
A61N 1/365
A61B 5/1459

US Classification:

607 22, 600322, 600348

Abstract:

In an embodiment, the invention includes an implantable medical device with a pulse generator and a chemical sensor in communication with the pulse generator, the chemical sensor configured to detect an ion concentration in a bodily fluid. In an embodiment, the invention includes a method for providing cardiac arrhythmia therapy to a patient including sensing a physiological concentration of an analyte, communicating data regarding the physiological concentration of the analyte to an implanted pulse generator, and delivering therapy to the patient based in part on the physiological concentration of the ion. In an embodiment, the invention includes a method for monitoring diuretic therapy. In an embodiment, the invention includes a method for controlling delivery of an active agent into a human body. Other aspects and embodiments are provided herein.

US Patent:

7819816, Oct 26, 2010

Filed:

Mar 29, 2006

Appl. No.:

11/392365

Inventors:

Yanchuan Pu - Minneapolis MN, US
Kent Lee - Shoreview MN, US
Jonathan Kwok - Shoreview MN, US
Zheng Lin - Mounds View MN, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61B 5/08
A61B 5/02
A61N 1/00

US Classification:

600529, 600484, 600508

Abstract:

Systems and methods are directed to evaluating breathing disorders, such as periodic disordered breathing. A signal representative of patient respiration is developed, typically patient-internally. An envelope of the signal is provided. Periodicity of the envelope is detected, and presence and severity of periodic disordered breathing is determined based on the periodicity of the envelope.

US Patent:

7922663, Apr 12, 2011

Filed:

Sep 24, 2007

Appl. No.:

11/903735

Inventors:

Binh C. Tran - Minneapolis MN, US
Abhi Chavan - Maple Grove MN, US
Rodney W. Salo - Fridley MN, US
Jonathan Kwok - Denville NJ, US

Assignee:

Cardiac Pacemakers, Inc. - St. Paul MN

International Classification:

A61B 8/00

US Classification:

600459, 607 4

Abstract:

An apparatus comprising an implantable acoustic transducer, an acoustic transducer interface circuit communicatively coupled to the acoustic transducer, and a controller circuit communicatively coupled to the acoustic transducer interface circuit. The controller is configured to, in response to receiving an indication of a patient condition associated with a development of a blood vessel obstruction, initiate delivery of acoustic energy that mitigates the blood vessel obstruction. Other systems and methods are described.