Other

Respitrace Corporation

Non-invasive Monitoring Systems, Inc.

Non-invasive Monitoring System, Inc.

Chu Pak

Herman L Watson

Marvin A Sackner

Gerald D Williams

James W Chong

Jose A Adams

William Meichner

Deborah R Sackner

An improved, low-cost stretchable band incorporating a conductor for disposition around the human torso or other three-dimensional object, and particularly intended for use with respiration monitoring apparatus, is disclosed. Also presented is an improved enclosure housing circuitry releasable connected to the conductor in the band when the band is incorporated in respiration monitoring apparatus.

Apparatus for making a stretchable band-type transducer particularly

The present invention is an apparatus and method for improving the detection of the inductance 'signal' generated by an inductive plethysmograph (12). Signal detection is improved by modifying the design of the inductive plethysmograph (12) and also by improving the design of the associated circuitry. By virtue of these improvements, the associated circuitry may be located remotely rather than on the transducer, as is the current practice. In one aspect of the invention, the impedance matching transformer (14) joining the inductive plethysmograph (12) to the oscillator (16) is selected such that the inductance of its primary winding is greater than about ten times the reflected inductance of the inductive plethysmograph (12) and the cable (24) joining it to the transformer (14). In accordance with another aspect of the invention, the inductive plethysmograph (12) is modified such that the conductor (20) incorporated therein encircles the relevant body portion a plurality of times. In yet a further aspect of the invention, the cable (24) connecting the inductive plethysmograph (12) to the transformer (14) is selected such that the ratio of the diameter of its screen to the diameter of its center conductor is minimized for reducing the inductance per unit length thereof.

Inductive plethysmographic transducers and electronic circuitry therefor

An improved, low-cost stretchable band incorporating a conductor for disposition around the human torso or other three-dimensional object, and particularly intended for use with respiration monitoring apparatus, is disclosed.

Stretchable band - type transducer particularly suited for use with

An improved, low-cost stretchable band incorporating a conductor for disposition about the human torso or other three dimensional object, and particularly intended for use with respiration monitoring apparatus, is disclosed. A method for making the band, which method is suitable to mass production techniques, is also disclosed. Also presented is an improved enclosure housing circuitry releasably connected to the conductor in the band when the band is incorporated in respiration monitoring apparatus.

Stretchable band-type transducer particularly suited for respiration

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Miami, FL, United States of America

Chu Pak