Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1985-04-15
1986-11-18
Recla, Henry J.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820417, A61M 1600
Patent
active
046229639
ABSTRACT:
A single patient ventilator/resuscitator of the type which has a timed cycle of operation, but which a patient can override in response to his physiological needs. The ventilator/resuscitator has a source of oxygen, for example a chlorate candle (26), the oxygen source being associated with a filter (32) capable of filtering toxic or harmful contaminants from the atmosphere. Fluid operated delivery and control means are associated with the oxygen source and includes an air oxygen delivery means (20) shiftable between inspiratory and expiratory modes. When the delivery means is in the inspiratory mode at least a portion of the oxygen output is delivered to the patient (14), and when the delivery means is in the expiratory mode at least a portion of the oxygen output is delivered to an accumulator (54). The fluid operated control means (24) will cause the delivery means to cycle between its inspiratory and expiratory positions in a timed cycle established by timing modules (88, 89). The control means additionally includes pressure sensing devices (90, 92) which are capable of causing the control means (24) to shift the delivery means to an inspiratory mode when the patient initiates an inspiratory effort, and which are also capable of switching the delivery means to an expiratory mode when the pressure to the patient exceeds its set peak pressure.
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"pneuPAC" Ventilator/Resuscitator by Bear Medical Systems, Inc. the Bear 2 Ventilator by Bear Medical Systems, Inc.
2nd Ed. of "Respiratory Therapy Equipment" by Steven P. McPherson, publ. 1981 by The C. V. Mosby Company particularly pp. 234 to 237.
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Dynamco Logic Components--Bulletin 300, C. A. Norgren Co.--fluidic components.
Figgie International Inc.
Recla Henry J.
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