초록 ▼

This invention provides a system for eliminating gas bubbles from a liquid. The liquid enters a chamber through an inlet port. The chamber has two outlet ports, the first bounded by a hydrophilic filter which passes liquid but not gas, and the second bounded by a hydrophobic filter which passes gas

This invention provides a system for eliminating gas bubbles from a liquid. The liquid enters a chamber through an inlet port. The chamber has two outlet ports, the first bounded by a hydrophilic filter which passes liquid but not gas, and the second bounded by a hydrophobic filter which passes gas but not liquid. Entrapped gas bubbles entering the chamber pass through the hydrophobic filter to the atmosphere. The degassed liquid passes through the hydrophilic filter into tubing leading to the desired receptacle. This apparatus and method are particularly suitable for intravenous infusions and other medical applications in which the degassed liquid passes directly into the blood vessels of a patient.

대표청구항 ▼

A system for selectively and alternately either measuring central venous pressure of a patient or introducing a liquid substantially free of gas bubbles into the venous system of a patient, the system comprising: (a) a liquid supply; (b) a manometer, having first and second ends; (c) a means for fil

A system for selectively and alternately either measuring central venous pressure of a patient or introducing a liquid substantially free of gas bubbles into the venous system of a patient, the system comprising: (a) a liquid supply; (b) a manometer, having first and second ends; (c) a means for filtering, connected between the first end of the manometer and the patient, provided with a chamber having a hydrophilic filter for passing liquid but not gas bubbles to the patient, and a hydrophobic filter for passing gas bubbles but not liquid out of the chamber and away from the patient; and (d) a selector valve having first and second open positions, the first position placing ambient atmospheric air into communication with the second end of the manometer to permit measurement of central venous pressure of the patient, and the second position placing the liquid supply in communication with the second end of the manometer to supply liquid substantially free of gas bubbles to the patient.