Thermedics Inc.

Other

Thermo Electron Corporation

Thermo Cardiosystems, Inc.

David B Gernes

David P Rounbehler

Eugene K Achter

David P Lieb

Abdul Tafreshi

Ernesto E Blanco

Philip R Lichtman

Anthony J Armini

Howard M Loree, Ii

Shelly K Entner

Dennis A Gadarowski

A bearing includes a first component having a surface and a second component having a surface moveable relative to the surface of the first component and contacting that surface when the components are at rest relative to each other. The surface of the second component is coated with a ceramic material and the surface of the second component is implanted with ions. The bearing can be used in an implantable heart pump.

Wear-resistant bearings

Disclosed are a method and apparatus for high speed, selective detection of vapors of specific compounds, particularly nitrogen-containing compounds, utilizing a bypass branch and high speed gas chromatography for improved selectivity and sensitivity of detection. A system with two gas chromatographs (GC's) alternating in series with two pyrolyzers provides two time intervals of detection in a downstream detector, with the second time interval containing signals delayed and further separated relative to signals from the first time interval. The bypass branch, in diverting a portion of the flow of gas samples from passage through the second gas chromatograph and second pyrolyzer, avoids interferences in the first time interval of detection from non-GC-retained compounds decomposed in the second pyrolyzer. Also disclosed is an arrangement for rapid, precise heating of vapor concentrator tubes in which vapors are rapidly focussed and then injected into a GC, and for rapid, precise heating of the GC's.

Vapor detection with high speed gas chromatography

A timepiece to be worn on the person which provides a silent mechanism alarm in the form of a tactile stimulus to the wearer when the chosen alarm time is reached. The tactile stimulus is provided by a motor attached to or integral with the timepiece and which may be driven by the same battery. The motor may actuate an element which creates the tactile stimulus in the form of vibrations, oscillations, a thumping sensation or a tightening of the wristband, among others.

Silent alarm timepiece

Disclosed are a method and apparatus for high speed, selective detection of vapors of specific compounds, particularly nitrogen-containing compounds, utilizing, a bypass branch and high speed gas chromatography for improved selectively and sensitivity of detection. A system with two gas chromatographs (GC's) alternating in series with two pyrolyzers provides two time intervals of detection in a downstream detector, with the second time interval containing signals delayed and further separated relative to signals from the first time interval. The bypass branch, in diverting a portion of the flow of gas samples from passage through the second gas chromatograph and second pyrolyzer, avoids interferences in the first time interval of detection from non-GC-retained compounds decomposed in the second pyrolyzer. Also disclosed is an arrangement for rapid, precise heating of vapor concentrator tubes in which vapors are rapidly focussed and then injected into a GC, and for rapid, precise heating of the GC's.

A monitor for a pneumatically driven blood pump receives an input correlated to mechanical operation of the blood pump and electrically transforms the information to clinical information related to such factors as stroke volume of the pump, average stroke volume, flow rate and beat rate.

Growing community of inventors

Watertown, MA, United States of America

David B Gernes