Browse Prior Art Database

Simulated Breath Humidification

IP.com Disclosure Number: IPCOM000079401D
Original Publication Date: 1973-Jun-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Bartlett, RG: AUTHOR [+2]

Abstract

This device is a part of the temperature/humidity subsystem 15 in the Breathing Metabolic Simulator, which is described in the IBM Technical Disclosure Bulletin, Vol. 16, No. 1, June 1973, pages 320 and 321; i.e., a humidification chamber is provided which exposes a variable volume of simulated exhaled breath, to insure near saturation of moisture during a minimum breath cycle. It contains a controlled heater capable of maintaining the breath at body temperature under the same conditions. Development of the simulator required simulation of exhaled human breath within parameters of 98.6 degrees F temperature, and a humidity at or near saturation for breath volumes ranging from at rest to hard-work conditions.

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Simulated Breath Humidification

This device is a part of the temperature/humidity subsystem 15 in the Breathing Metabolic Simulator, which is described in the IBM Technical Disclosure Bulletin, Vol. 16, No. 1, June 1973, pages 320 and 321; i.e., a humidification chamber is provided which exposes a variable volume of simulated exhaled breath, to insure near saturation of moisture during a minimum breath cycle. It contains a controlled heater capable of maintaining the breath at body temperature under the same conditions. Development of the simulator required simulation of exhaled human breath within parameters of 98.6 degrees F temperature, and a humidity at or near saturation for breath volumes ranging from at rest to hard-work conditions.

Referring to the drawing, humidification chamber 60 consists of an aluminum chassis box with a 400 watt heat sheet 61 glued to the bottom of the box. Vertical perforated metal separators 62 and 63 are fastened to the sides of the heater ends, and separate the chamber into three areas. The main area is filled with 4'' x 8'' gauze surgical sponges 64 partially in water 65 covering the heater, and acting as the moisture transfer media by wicking action. The breath inlet end 66 of the chamber contains a check valve, not shown, and is topped by a sealed one pint capacity reservoir 67. Water level is maintained in the chamber 60 at the bottom of a tube 68, which connects the chamber to the top of the reservoir
67. The shorter reservo...