ROBERT THOMAS STONE
Pilots at Cumberland Dr, Sunnyvale, CA

6503207, Jan 7, 2003

Feb 13, 2001

09/782771

Robert T. Stone - Sunnyvale CA

Natus Medical, Inc. - San Carlos CA

A61B 500

600559, 73585

The disclosure describes a multi-mode audiometric device comprising a stimulus generator adapted to transmit at least one true random stimulus sequence to a subjects inner ear, a first detector for detecting at least one AEP signal having at least a first waveform, a second detector for detecting at least one OAE signal having at least a second waveform; a signal analyzer for analyzing the AEP and OAE signals, the signal analyzer including a first averager for reconstructing the first waveform and a second averager for reconstructing the second waveform; and a synchronizer for synchronizing the stimulus generator and signal analyzer.

RE35122, Dec 19, 1995

Feb 24, 1992

7/840437

James E. Corenman - Oakland CA
Robert T. Stone - Sunnyvale CA
Andras Boross - Fremont CA
Deborah A. Briggs - San Ramon CA
David E. Goodman - San Francisco CA

Nellcor Incorporated - Pleasanton CA

A61B 500

128633

A method and apparatus for improving the calculation of oxygen saturation and other blood constituents by non-invasive pulse oximeters. The method and apparatus permit more accurate determination of blood flow by collecting time-measures of the absorption signal at two or more wavelengths and processing the collected time-measure to obtain composite pulsatile flow data from which artifacts have been filtered. The processing may occur in the time domain or in the frequency domain. In the preferred time domain embodiment, successive portions of periodic information are weighted and added together in synchrony to obtain the composite pulse information. In the preferred frequency domain embodiment, the time-measure is Fourier transformed into its spectral components to form the composite information. A new method and apparatus for correlating the heartbeat and optical pulse is provided whereby a product of the ECG R-wave and optical pulse signals corresponding to the same heartbeat is obtained, and one signal is time shifted relative to the other until a maximum waveform product corresponding to the heartbeat is determined.

2011016, Jun 30, 2011

Apr 30, 2010

12/799752

Robert T. Stone - Sunnyvale CA, US

A61B 5/00

600561

An implantable pressure sensor system having a sensor assembly configured and adapted to measure pressure in a volume, the sensor assembly including at least a first MEMS pressure sensor, an application-specific integrated circuit (ASIC) having memory means, temperature compensation system, drift compensation system, a sensor catheter, and power supply means for powering the sensor assembly, the first MEMS pressure sensor having a pressure sensing element that is responsive to exposed pressure, the pressure sensing element being adapted to generate a pressure sensor signal representative of the exposed pressure, the temperature compensation system being adapted to correct for temperature induced variations in the pressure sensor signal, the drift compensation system being adapted to correct for pressure and temperature induced pressure sensor signal drift.

5404885, Apr 11, 1995

Jan 21, 1994

8/184379

Neil J. Sheehan - Palo Alto CA
Scott R. Rouw - Union City CA
Robert T. Stone - Sunnyvale CA

Natus Medical, Incorporated - San Carlos CA

A61B 508

128716

A noninvasive device and methods for measuring the end-tidal carbon monoxide concentration in a patient's breath, particularly newborn and premature infants. The patient's breath is monitored. An average carbon monoxide concentration is determined based on an average of discrete samples in a given time period. The ratio of the end-tidal portion of the breath flow sample is separately determined, preferably based on monitoring the level of carbon dioxide in the gas sample and identifying the carbon dioxide concentration levels corresponding to the end-tidal portion of the breath sample. The sensed carbon monoxide level is converted to the end-tidal carbon monoxide level by subtracting the ambient carbon monoxide level and dividing the remainder by the ratio of end-tidal breath to breath in the breath sample. An easy to use microcontroller-based device containing a carbon dioxide detector, a carbon monoxide detect and a pump for use in a hospital, home, physician's office or clinic by persons not requiring high skill and training is described. A replaceable filter unit made of a single tri-lumen PVC extrusion and a tube segment inter-connecting two of the lumens used to provide the consumable filtration material.

5078136, Jan 7, 1992

Aug 4, 1989

7/389633

Robert T. Stone - Sunnyvale CA
Deborah A. Briggs - San Ramon CA

Nellcor Incorporated - Hayward CA

A61B 502

128633

A method and apparatus for improving the calculation of oxygen saturation by non-invasive pulse oximeters during transient conditions. Transient conditions introduce artifactual errors into the detected optical signal because of changes in transmittance of the light with localized blood volume changes and as the average background oxygen saturation level of the patient's blood changes. The invention relates to correcting the detected optical pulses by linear interpolation and rate of change techniques or by selective frequency filtering and compensating the detected optical signal using the filtered signal to provide accurate estimates of oxygen saturation during transient conditions.

5293875, Mar 15, 1994

Jun 16, 1992

7/899261

Robert T. Stone - Sunnyvale CA

Natus Medical Incorporated - San Carlos CA

A61B 500

128719

A noninvasive device and methods for measuring the end-tidal carbon monoxide concentration in a patient's breath, particularly newborn and premature infants. The patient's breath is monitored. An average carbon monoxide concentration is determined based on an average of discrete samples in a given time period. The ratio of the end-tidal portion of the breath flow sample is separately determined, preferably based on monitoring the level of carbon dioxide in the gas sample and identifying the carbon dioxide concentration levels corresponding to the end-tidal portion of the breath sample. The sensed carbon monoxide level is converted to the end-tidal carbon monoxide level by subtracting the ambient carbon monoxide level and dividing the remainder by the ratio of end-tidal breath to breath in the breath sample. An easy to use microcontroller-based device containing a carbon dioxide detector, a carbon monoxide detect and a pump for use in a hospital, home, physician's office or clinic by persons not requiring high skill and training is described.

2006017, Aug 3, 2006

Mar 29, 2006

11/393194

Robert Stone - Sunnyvale CA, US
Ralph Francis - Oakland CA, US

A61N 1/08

607040000, 607058000

A method for treating eating disorders comprising the steps of generating a neuro-electrical satiety signal that substantially corresponds to a neuro-electrical signal that is generated in a body and produces a satiety effect in the body, sensing food intake in a subject over at least a first period of time, and transmitting the neuro-electrical satiety signal to the subject if the food intake of the subject exceeds a predetermined threshold level during the first period of time.

2003020, Nov 6, 2003

May 3, 2002

10/139117

Robert Stone - Sunnyvale CA, US

ArthroCare Corporation - Sunnyvale CA

A61B018/18

606/041000

This relates generally to limited use devices. More particularly, the invention relates to a control system for limited use devices, particularly, medical devices and instruments which can detect utilization history and compare the history to utilization factors to disable the device.

2006011, May 25, 2006

Oct 13, 2005

11/251479

Robert Stone - Sunnyvale CA, US
Dennis Meyer - Albuquerque NM, US

A61N 1/18

607042000

A method to record, store and transmit waveform signals to control respiration generally comprising capturing waveform signals that are generated in a subject's body and are operative in the control of respiration and transmitting at least a first waveform signal to the body that is recognizable by the respiratory system as a modulation signal.

2011016, Jun 30, 2011

Dec 29, 2009

12/655405

Robert T. Stone - Sunnyvale CA, US

A61B 3/16, G01L 19/04, G01L 9/12, A61B 5/00

600398, 73708, 73724, 600561

An implantable pressure sensor system having a sensor assembly configured and adapted to measure pressure in a volume, the sensor assembly including at least a first MEMS pressure sensor, an application-specific integrated circuit (ASIC) having memory means, temperature compensation system, drift compensation system, and power supply means for powering the sensor assembly, the first MEMS pressure sensor having a pressure sensing element that is responsive to exposed pressure, the pressure sensing element being adapted to generate a pressure sensor signal representative of the exposed pressure, the temperature compensation system being adapted to correct for temperature induced variations in the pressure sensor signal, the drift compensation system being adapted to correct for pressure and temperature induced pressure sensor signal drift.