System for eliminating or reducing static electricity in infusion pumping systems
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Abstract
A system for eliminating or reducing static electricity in infusion pumping systems which may cause artifacts in electrocardiograms is disclosed. Infusion pumping systems deliver prescribed infusates to a patient. Frequently, such infusion systems are used in conjunction with electrocardiogram monitors. Static electricity generated at or by the infusion pumping system may cause artifacts in the electrocardiogram monitor. The present invention reduces or eliminates this static electricity by forming parts in relative motion of a similar material to reduce generation of static electric charges. The pumping piston and diaphragm wall of a pumping chamber may be formed from a similar material. The valve pistons and valve diaphragms may be formed of a similar material. The removable pumping cassette and cassette receiver may be formed from a similar material. The present invention also reduces the formation of static electric charges by coating the cassette with an antistatic material. In a further embodiment of the present invention, the fluid flow line may include an electrical conductor connected to a ground.
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Specification
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- Resources
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Current AssigneeHospira Incorporated (Pfizer Inc.)
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Original AssigneeAbbott Laboratories Incorporated
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InventorsJenney, Scott F., Coutre, James E.
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Primary Examiner(s)Hirsch, Paul J.
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Application NumberUS07/623,200Time in Patent Office579 DaysField of Search604/218, 604/151, 361/212, 361/220US Class Current604/151CPC Class CodesA61M 2205/0233 Conductive materials, e.g. ...A61M 2205/42 Reducing noiseA61M 5/14224 Diaphragm typeC09K 3/16 Anti-static materials
