Kenneth L Cowan

US Patent:

20230089192, Mar 23, 2023

Filed:

Apr 29, 2022

Appl. No.:

17/732805

Inventors:

- Grand Cayman, KY
Kenneth F. Cowan - Everett WA, US
David P. Finch - Bothell WA, US
Joseph L. Sullivan - Kirkland WA, US

Assignee:

West Affum Holdings Corp. - Grand Cayman

International Classification:

A61N 1/39
H02J 7/34

Abstract:

A wearable medical device comprising monitoring circuitry to monitor one or more patient parameters of a patient and defibrillation circuitry to provide one or more defibrillation shocks to the patient responsive to a control signal from the monitoring circuitry. The defibrillation circuitry comprises a defibrillation capacitor to provide energy for the one or more defibrillation shocks. The wearable medical device also comprises a power source to provide power to the monitoring circuitry and the defibrillation circuitry. The power source comprises a low current power source (LCPS) to provide power to the monitoring circuitry, and a high current power source (HCPS) to provide power to the defibrillation circuitry.

US Patent:

20200282224, Sep 10, 2020

Filed:

Mar 7, 2020

Appl. No.:

16/812306

Inventors:

- Grand Cayman, KY
Douglas K. Medema - Everett WA, US
Kenneth F. Cowan - Kirkland WA, US

International Classification:

A61N 1/39
A61N 1/04
A61N 1/37

Abstract:

Embodiments of a wearable cardioverter defibrillator (WCD) system are configured to monitor a patient's ECG for shockable arrhythmias and deliver a shock to the patient in response to such a detection. To monitor the patient's ECG with reduced signal noise to improve the system's performance, the system includes a cable assembly having: a signal line; an inner shield and an outer shield; an ECG electrode electrically connected to the signal line of the cable assembly; and an amplifier having first and second input nodes respectively connected to the signal line and the outer shield of the cable assembly. The amplifier's output node is electrically connected to the inner shield of the cable assembly to reduce the reactive load seen by the patient's heart in driving the ECG sensing circuitry, which reduces the noise on the ECG signal outputted by the amplifier.

US Patent:

20200046962, Feb 13, 2020

Filed:

Aug 12, 2019

Appl. No.:

16/538135

Inventors:

- Grand Cayman, KY
Douglas K. Medema - Everett WA, US
Kenneth F. Cowan - Kirkland WA, US

International Classification:

A61N 1/04
A61N 1/39
A61B 5/04
A61B 5/0205
A61B 5/046
A61B 5/00

Abstract:

A wearable cardioverter defibrillator (WCD) comprises a plurality of electrocardiography (ECG) electrodes, a right-leg drive (RLD) electrode, and a plurality of defibrillator electrodes to contact the patient's skin when the WCD is delivering therapy to the patient, a preamplifier coupled to the ECG electrodes and the RLD electrode to obtain ECG data from the patient as one or more ECG vectors, a high voltage subsystem to provide a defibrillation voltage to the patient through the plurality of defibrillator electrodes, and an impedance measurement circuit to measure an impedance across a first pair of ECG electrodes, wherein the impedance measurement circuit is to apply a balancing impedance across a second pair of ECG electrodes when an impedance of the second pair of ECG electrodes is not being measured.

US Patent:

20160302685, Oct 20, 2016

Filed:

Jun 24, 2016

Appl. No.:

15/192588

Inventors:

- Grand Cayman, KY
David Peter Finch - Bothell WA, US
Dallas Eugene Meeker - Kirkland WA, US
Laura Marie Gustavson - Redmond WA, US
Daniel James Finney - Woodinville WA, US
Douglas Keith Medema - Everett WA, US
Kenneth F. Cowan - Kirkland WA, US
Karen Elizabeth McEwen - Kenmore WA, US
Gregory T. Kavounas - Bellevue WA, US

International Classification:

A61B 5/0428
H04B 1/3827
A61N 1/04
A61B 5/0416
A61B 5/00
A61B 5/0408

Abstract:

A Wearable Medical System includes a support structure that is configured to be worn by a person. The WMS also includes an electronics module, a cable assembly, and at least one electrode that can be configured to be coupled to the support structure. The cable assembly includes a base member and a cable coupled to the base member. The support structure can be dimensioned relative to the person's body to be worn with tension, and be resiliently stretched under the tension. The stretching of the support structure can stretch the base member of the cable assembly, thus increasing the effective length of the cable, while reducing or even eliminating slack in the cable.

US Patent:

20150320994, Nov 12, 2015

Filed:

Oct 8, 2014

Appl. No.:

14/510081

Inventors:

- Redmond WA, US
David Peter Finch - Bothell WA, US
Dallas Eugene Meeker - Kirkland WA, US
Laura Marie Gustavson - Redmond WA, US
Daniel James Finney - Woodinville WA, US
Douglas Keith Medema - Everett WA, US
Kenneth F. Cowan - Kirkland WA, US
Karen Elizabeth McEwen - Kenmore WA, US
Gregory T. Kavounas - Bellevue WA, US

International Classification:

A61N 1/04
H04B 1/3827

Abstract:

A Wearable Medical System includes a support structure that is configured to be worn by a person. The WMS also includes an electronics module, a cable assembly, and at least one electrode that can be configured to be coupled to the support structure. The cable assembly includes a base member and a cable coupled to the base member. The support structure can be dimensioned relative to the person's body to be worn with tension, and be resiliently stretched under the tension. The stretching of the support structure can stretch the base member of the cable assembly, thus increasing the effective length of the cable, while reducing or even eliminating slack in the cable.