James M Nolan

US Patent:

8165684, Apr 24, 2012

Filed:

Aug 1, 2008

Appl. No.:

12/184663

Inventors:

David A. Putz - Pewaukee WI, US
Bharat S. Joshi - Pineville NC, US
Bruce Lanning - Littleton CO, US
James A. Nolan - Lakewood CO, US
Gregory J. Nuebel - Bailey CO, US
Dennis D. Spencer - Woodbridge CT, US
Hitten P. Zaveri - New Haven CT, US

Assignee:

Yale University - New Haven CT

International Classification:

A61N 1/00
A61B 5/04

US Classification:

607 45, 607 33, 600518, 600544

Abstract:

A wireless system for monitoring a patient's brain tissue including (1) a plurality of electrodes abutting brain tissue, (2) main circuitry outside the patient's body to transmit power at radio frequencies and send/receive data using infrared energy, and (3) subcutaneously-implanted remote circuitry connected to the electrodes and configured to (a) receive transmitted RF power, (b) capture and digitize EEG signals from the electrodes, and (c) send/receive data to/from the main circuitry using IR energy, including sending digitized EEG signals from each electrode to capture the full bandwidth of each EEG signal. The system preferably includes circuitry to measure the electrical impedance of each electrode for real-time monitoring of the condition of the electrode/tissue interfaces to enhance interpretation of captured EEG signals.

US Patent:

20120238855, Sep 20, 2012

Filed:

Mar 23, 2012

Appl. No.:

13/429109

Inventors:

Bruce Lanning - Littleton CO, US
James A. Nolan - Lakewood CO, US
Gregory J. Nuebel - Bailey CO, US
Dennis D. Spencer - Woodbridge CT, US
Hitten P. Zaveri - New Haven CT, US

International Classification:

A61B 5/0478

US Classification:

600378

Abstract:

A wireless system for brain monitoring/mapping of neurological-disorder patients includes a plurality of electrodes each configured for surface abutment of brain tissue and main circuitry for placement outside a body of a patient and configured to transmit power at radio frequencies and send and receive data using infrared energy. Remote circuitry is provided for subcutaneous implantation in a head of the patient. The remote circuitry is connected to the plurality of electrodes and includes a multiplexer sampling signals from the plurality of electrodes. The multiplexer outputs electrode signals to an amplifier and A/D converter for transmission to the main circuitry. The remote circuitry is configured to (a) receive transmitted power at radio frequencies from the main circuitry, (b) capture and digitize full-bandwidth EEG signals from each of the electrodes, and (c) send data to and receive data from the main circuitry using infrared energy.

US Patent:

60724048, Jun 6, 2000

Filed:

Apr 29, 1997

Appl. No.:

8/841291

Inventors:

James Nolan - Conifer CO
Eric Shreve - Louisville CO

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

H04Q 702

US Classification:

34082569

Abstract:

A universal garage door opener (UGDO) that records and recreates a carrier frequency signal from a wide range of commercially available garage door openers. A receiver portion of the UGDO includes a detector for removing a carrier wave of the received carrier frequency signal. The carrier frequency signal is applied to a frequency synthesizer including a dual modulus prescaler divider chain. The carrier frequency signal is divided down by the divider chain and compared to a divided reference frequency signal to determine the carrier frequency. The dual modulus divider chain starts at a maximum divide ratio, and periodically changes the divide ratio until the divided carrier frequency signal is within a predetermined resolution range of the divided reference frequency signal. A JK flip flop is used to hold a phase detect output signal of the frequency synthesizer indicative of the divided carrier frequency signal. A carrier frequency signal from a variable controlled oscillator is applied to the frequency synthesizer to be divided down by the dual modulus prescaler divider chain.

US Patent:

51974673, Mar 30, 1993

Filed:

Jun 22, 1992

Appl. No.:

7/902242

Inventors:

Bruce M. Steinhaus - Parker CO
Tibor A. Nappholz - Englewood CO
James A. Nolan - Conifer CO
Robert A. Morris - Palmer Lake CO
Ken Koestner - Englewood CO

Assignee:

Telectronics Pacing Systems, Inc. - Englewood CO

International Classification:

A61N 1368

US Classification:

128419PG

Abstract:

A metabolic demand rate-responsive cardiac stimulation apparatus and method are disclosed which employ multiple physiological rate control parameters, such as respiratory minute volume, patient motion and cardiac stroke volume. The parameters are derived using a single standard pacing lead or transducer. The apparatus and method perform each physiological measurement by periodically applying a measuring current between two points within the apparatus. This measuring current has frequency components in a range of from approximately 10 kilohertz to 1000 megahertz. Application of this measuring current allows the apparatus to detect the voltage which arises from the applied current and, from the detected voltage, to measure the patient's spatial impedance. For a particular measurement, the apparatus controls which physiological parameter is sensed by regulating the frequency content of the measuring current. The apparatus analyzes the physiological parameters to determine the best pacing rate in terms of characteristics such as response time and stability.

US Patent:

54048770, Apr 11, 1995

Filed:

Jun 4, 1993

Appl. No.:

8/072570

Inventors:

James A. Nolan - Conifer CO
Bruce M. Steinhaus - Parker CO
Tibor A. Nappholz - Englewood CO

Assignee:

Telectronics Pacing Systems, Inc. - Englewood CO

International Classification:

A61B 50205

US Classification:

128671

Abstract:

A leadless implantable cardiac arrhythmia alarm is disclosed which continuously assesses a patient's heart function to discriminate between normal and abnormal heart functioning and, upon detecting an abnormal condition, generates a patient-warning signal. The alarm is capable of sensing impedance measurements of heart, respiratory and patient motion and, from these measurements, generating an alarm signal when the measurements indicate the occurrence of a cardiac arrhythmia. Because it requires no external leads or feedthrough connectors, the hermetically-sealed patient alarm is minimally invasive and results in reduced trauma to a patient.

US Patent:

53617762, Nov 8, 1994

Filed:

Aug 6, 1993

Appl. No.:

8/104382

Inventors:

Kent E. Samuelson - Aurora CO
Robert A. Morris - Palmer Lake CO
James A. Nolan - Conifer CO
Bruce M. Steinhaus - Parker CO

Assignee:

Telectronics Pacing Systems, Inc. - Englewood CO

International Classification:

A61B 505

US Classification:

128734

Abstract:

A time domain reflectometry (TDR) impedance sensor is provided for measuring body impedance along a lead or catheter implanted in a patient's cardiovascular system. The TDR sensor applies an electrical stimulus to the lead and measures reflections echoed from impedance variations along and distal to the lead, which are superimposed on the applied stimulus. The measured signals may be analyzed with respect to time-of-flight and distance along the lead to detect a plurality of physiologically meaningful signals.

US Patent:

49074490, Mar 13, 1990

Filed:

Oct 31, 1986

Appl. No.:

6/926361

Inventors:

David B. Call - Boulder CO
James A. Nolan - Evergreen CO
Steven J. Lassman - Boulder CO

Assignee:

A.I.R., Inc. - Boulder CO

International Classification:

G01W 104
G01L 912
G01R 2726

US Classification:

73170R

Abstract:

A radiosonde has a novel and improved measuring circuitry for measuring atmospheric conditions, such as, temperature, humidity and pressure through the direct conversion of resistance and capacitance values into binary numbers. The binary numbers are transmitted in digital form along with calibration coefficients to a remote ground station. The measuring circuitry can be mounted on the same substrate with the pressure transducer, and the electrical connections between the pressure transducer and measuring circuitry are simplified by utilization of an offset diaphragm, pressure cell arrangement.

US Patent:

60042745, Dec 21, 1999

Filed:

Feb 26, 1998

Appl. No.:

9/031358

Inventors:

James A. Nolan - Conifer CO
Trevor J. Moody - New York NY

International Classification:

A61N 500

US Classification:

600486

Abstract:

Continuous, non-invasive method and apparatus for measuring blood pressure parameters and the like are disclosed. One disclosed apparatus includes an earpiece for sealing an individual's ear canal so that arterial blood pressure changes adjacent the sealed ear canal produce air pressure changes in the sealed ear canal. The apparatus further includes pressure sensing means for measuring the air pressure changes in the sealed ear canal and producing a signal related to the measured air pressure changes. In addition, the apparatus preferably includes processing means for processing the signal to measure blood pressure parameters, as well as means for displaying and/or recording the processed signal. The method may be used to determine heart rate, blood pressure, cardiac output, stroke volume, cardiac function, circulatory function, and other parameters. To obtain absolute pressure readings, two sensors, one in each ear, may be used to monitor pulse time transit delay.