Electronic drainage system

Details Electronic drainage system Electronic drainage system

A - Human Necessities

61

M

341/38.5

A61M 1/00 (2006.01)

Patent

CA 1220538

ABSTRACT The invention provides an electronic drainage system for draining of liquid and gases from a cavity such as the pleural cavity, while providing means for making any of a number of measurements and for generating accurate and easily comprehendable readings without the need to resort to manometer tubes or other fluid gauges. The invention contemplates both a comprehensive system for controlling the flow of fluids from the pleural cavity or the like, through a simple hook-up between the patient and a suction system, while monitoring any of various physical characteristics and indicating such measurements on readily readable displays, such characteristics including: effluent temperature, effluent volume, effluent weight, patient negativity pressure, maximum negativity, patient air flow rate, suction, suction air flow and the like. A preferred circuit for performing the foregoing functions includes various transducers which can further be used to regulate the desired suction setting and to measure various air flow rates while providing automatic and precise control of the regulated parameters, and circuitry connected to an effluent collection chamber for repeatedly measuring and emptying the chamber to provide the drainage function as well as the measurement functions of the fluids associated therewith. Multiplex circuitry is preferably provided for automatically reading the various measuring devices and for displaying relevant information in an easily understandable form. The invention on a less comprehensive scale comprehends a combination of electronic and mechanical components for measuring and displaying values for air flow, suction, patient negativity and maximum negativity. The invention in its preferred form includes fluid contaminatable portions which are disposable after use.

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