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Breathing Metabolic Simulator

IP.com Disclosure Number: IPCOM000079396D
Original Publication Date: 1973-Jun-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Bartlett, RG: AUTHOR [+3]

Abstract

This breathing metabolic simulator is designed to simulate the breathing and metabolic parameters relevant to the test and evaluation of breathing and life support equipment. Variable-breathing rate, depth and waveform are provided, as well as temperature control, functional residual capacity adjustment, and maintenance of humidity in the exhaled breath. Metabolic controls include variable-oxygen consumption and carbon dioxide production, resulting in a variable-respiratory exchange ratio. Accordingly, since the simulator faithfully models all of the relevant breathing and metabolic functions, it can be used for calibrating and validating mechanical and gaseous pulmonary function test procedures.

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Breathing Metabolic Simulator

This breathing metabolic simulator is designed to simulate the breathing and metabolic parameters relevant to the test and evaluation of breathing and life support equipment. Variable-breathing rate, depth and waveform are provided, as well as temperature control, functional residual capacity adjustment, and maintenance of humidity in the exhaled breath. Metabolic controls include variable-oxygen consumption and carbon dioxide production, resulting in a variable-respiratory exchange ratio. Accordingly, since the simulator faithfully models all of the relevant breathing and metabolic functions, it can be used for calibrating and validating mechanical and gaseous pulmonary function test procedures.

Referring to the drawing, the breathing rate adjustment 10 provided by the simulator covers the span of rates that occur in the human being -- i.e., ranging from rest to hard-work conditions. More specifically, the following span of rates is attainable: a rate adjustment of 5-60 breaths/minute via bellows apparatus 11 and 14; a depth adjustment of 400-6000 ml/breath via fulcrum apparatus 12a and 12b; a functional residual capacity (FRC) adjustment of 1.7-3.5 liters via FRC adjustment 13, constant with rate, depth and waveform changes; and a velocity- time waveform variable adjustment from sine wave to other shapes under selective control, not shown.

Exhaled breath is maintained at body temperature and, except for conditions of extremely hard...