Ventilation sound detection system

Details Ventilation sound detection system Ventilation sound detection system

2005-03-08

2005-03-08

Lewis, Aaron J. (Department: 3743)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204210, C128S205230

Reexamination Certificate

active

06863068

ABSTRACT:
A ventilation sound detection system includes an audible display that emits a series of sounds based upon information provided by a ventilator. In particular, there are two different sound patterns emitted by the system. One sound represents inspiration and the other sound represents expiration. The inspiration sound is enunciated when monitored breathing pressure crosses a threshold level, thereby communicating to an anesthesiologist/clinician that a significant pressure has been developed in the breathing circuit (e.g., a proper inspiration breath has been taken by the patient). The exhalation sound is enunciated when the rising edge of a valid CO2breath has been returned to the breathing circuit (e.g., a proper exhalation breath has been made). Accordingly, the system provides the anesthesiologist/clinician with a new way of verifying that the patient is being properly ventilated. Therefore, ventilation changes or problems can be identified quickly and effectively.

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Govindarajan et al.,International Journal of Clinical Monitoring and Computing, “Real-time respiratory monitoring workstation—software and hardware engineering aspects,” vol. 9, No. 3, pp. 141-148 (Oct. 1992).

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