Scott O Schweizer

US Patent:

6823209, Nov 23, 2004

Filed:

Oct 19, 2001

Appl. No.:

09/982111

Inventors:

Dana J. Olson - Kirkland WA
Scott O. Schweizer - Snohomish WA
Tyler R. Hart - Kenmore WA
David Van Ess - Arlington WA

Assignee:

Medtronic Physio-Control Corp. - Redmond WA

International Classification:

A61B 50402

US Classification:

600510, 600509

Abstract:

The invention presents techniques for identifying signals detected by electrodes on the body of a patient as part of a reading of the patients electrocardiogram. A signal processor digitally filters the signal from the body, resulting in an electrocardiogram signal and a signal that identifies the presence and timing of signals from a pacemaker in the body. Other signals, such as a signal that reflects the quality of the electrical connection of the electrode to the body, may also be obtained by digital filtering.

US Patent:

7162306, Jan 9, 2007

Filed:

Nov 19, 2001

Appl. No.:

09/992708

Inventors:

Glen D. Caby - Lake Forest Park WA, US
James S. Neumiller - Redmond WA, US
Jyhlin Chang - Shoreline WA, US
Curtis R. Jordan - Kent WA, US
Dana J. Olson - Kirkland WA, US
Ward A. Silver - Vashon WA, US
Scott O. Schweizer - Snohomish WA, US

Assignee:

MedTronic Physio - Control Corp. - Redmond WA

International Classification:

A61N 1/39

US Classification:

607 60, 607 5

Abstract:

In general, the invention facilitates improved inter-module communication within a medical device system, such as an automated external defibrillator (AED), by using a serial data interface based on the USB specification to transfer data between modules. As a result, data transmission rates may be improved significantly, thereby providing ample communication bandwidth for a variety of medical device applications. Further, the serial interconnect nature of the USB interface reduces the number of physical interconnects that are needed to support the interface, thereby reducing the design constraints on the medical device system.

US Patent:

8417327, Apr 9, 2013

Filed:

Jun 20, 2002

Appl. No.:

10/176705

Inventors:

Fred W. Chapman - Renton WA, US
Joseph L. Sullivan - Kirkland WA, US
Scott O. Schweizer - Snohomish WA, US

Assignee:

Physio-Control, Inc. - Redmond WA

International Classification:

A61B 5/05

US Classification:

600547, 600548, 607 7, 607 8, 607 28

Abstract:

When a defibrillator selects a dosage of energy or current to be delivered to a patient, the defibrillator selects an excitation current frequency and applies the excitation current at the selected frequency to the patient. The frequency of the excitation current is selected as a function of the dosage to be delivered. The patient's response to the excitation current at the selected frequency will accurately reflect the impedance that the defibrillator will “see” when delivering the selected dosage of energy or current.

US Patent:

20070078499, Apr 5, 2007

Filed:

Dec 8, 2006

Appl. No.:

11/608699

Inventors:

Glen Caby - Lake Forest Park WA, US
James Neumiller - Redmond WA, US
Jyhlin Chang - Shoreline WA, US
Curtis Jordan - Kent WA, US
Dana Olson - Kirkland WA, US
Ward Silver - Vashon WA, US
Scott Schweizer - Snohomish WA, US

International Classification:

A61N 1/00

US Classification:

607059000

Abstract:

In general, the invention facilitates improved inter-module communication within a medical device system, such as an automated external defibrillator (AED), by using a serial data interface based on the USB specification to transfer data between modules. As a result, data transmission rates may be improved significantly, thereby providing ample communication bandwidth for a variety of medical device applications. Further, the serial interconnect nature of the USB interface reduces the number of physical interconnects that are needed to support the interface, thereby reducing the design constraints on the medical device system.

US Patent:

20090146695, Jun 11, 2009

Filed:

Nov 17, 2005

Appl. No.:

11/719813

Inventors:

Scott Schweizer - Snohomish WA, US
Shon Schmidt - Seattle WA, US
Manfred Bartz - Snohomish WA, US

Assignee:

KONINKLIJKE PHILIPS ELECTRONICS, N.V. - EINDHOVEN

International Classification:

B06B 1/02

US Classification:

327108

Abstract:

A hybrid integrated circuit package for a microbeamformer in an ultrasound probe includes a substrate, a driver circuit for generating transmit pulses to be transmitted to the transducer elements of the probe for producing a transmit beam, and a beamformer circuit including time delay circuits and a summation circuit, the time delay circuits being operatively arranged for receiving a plurality of reflected pulses from the transducer elements and delaying the reflected pulses and the summation circuit operatively arranged summing groups of the delayed reflected pulses for producing beamformed signals. The driver circuit is part of a high voltage integrated circuit device including said driver circuit. At least a portion of the beamformer circuit is part of a low voltage integrated circuit device, wherein the high voltage integrated circuit and the low voltage integrated circuit are mounted on the substrate.

US Patent:

20130218218, Aug 22, 2013

Filed:

Mar 8, 2013

Appl. No.:

13/791491

Inventors:

Fred Chapman - Renton WA, US
Joseph Sullivan - Kirdkland WA, US
Scott Schweizer - Snohomish WA, US

Assignee:

Physio-Control, Inc. - Redmond WA

International Classification:

A61N 1/39

US Classification:

607 6

Abstract:

When a defibrillator selects a dosage of energy or current to be delivered to a patient, the defibrillator selects an excitation current frequency and applies the excitation current at the selected frequency to the patient. The frequency of the excitation current is selected as a function of the dosage to be delivered. The patient's response to the excitation current at the selected frequency will accurately reflect the impedance that the defibrillator will “see” when delivering the selected dosage of energy or current.

US Patent:

62230778, Apr 24, 2001

Filed:

Jan 26, 1998

Appl. No.:

9/013142

Inventors:

Scott O. Schweizer - Snohomish WA
Gus H. White - Redmond WA
Aaron Huynh - Bothell WA

Assignee:

Physio-Control Manufacturing Corporation - Redmond WA

International Classification:

A61N 139

US Classification:

607 5

Abstract:

A method and apparatus for providing automatic power switching in a portable external defibrillator is disclosed. The power supply switching circuit includes a plurality of power supply ports for receiving power sources such as batteries and external power sources. The power supply switching circuit works with both batteries that include monitoring devices (smart batteries) and batteries that do not include monitoring devices (dumb batteries). The power supply switching circuit also includes microprocessor controllable switches for selectively coupling the power supply ports to the output of the power supply switching circuit, and a microprocessor for controlling the switches and for monitoring the power supply ports. Resident in the microprocessor is a control program for controlling the switching and monitoring operations. The control program uses data received from the power sources to select the best available power source to be used as the output for the power supply switching circuit.

US Patent:

60053704, Dec 21, 1999

Filed:

Jan 26, 1998

Appl. No.:

9/013805

Inventors:

Douglas M. Gustavson - Guilford CT
Scott O. Schweizer - Snohomish WA
David W. Tecklenburg - Mill Creek WA

Assignee:

Physio-Control Manufacturing Corporation - Redmond WA

International Classification:

H02J 700

US Classification:

320137

Abstract:

A control circuit ideally suited for a capacitor charging circuit (100) that uses an apparent measure of current flow through a circuit line to regulate current drawn from a battery through the circuit line is disclosed. A summing circuit (136) produces a difference voltage (138) of the battery voltage (152) subtracted from a threshold reference voltage (151). The difference voltage (138) is subsequently amplified by an amplifier (140), rectified by a diode (142), and added to a voltage measure (130) from a current-sense resistor (117) by a summing circuit (128). The resulting voltage measure (126) is an apparent measure of current flow and is provided to a charge controller (122) which regulates current flow through a transformer (107) by controlling the operation of a switch (108). As the voltage on the battery (102) decreases below the reference voltage set by voltage source (150), the increasing difference voltage (138) adds bias to the actual measure of current flow (130), thus providing the charge controller (122) with an apparent measure of current flow through the transformer (107) that is higher than the actual level of current flow. The charge controller is thereby deceived and reduces the current drawn from the battery through the transformer.