Sequential, continuous delivery of separate intravenous fluid mixtures is facilitated by a float operated valve which automatically re-starts flow from a primary solution when the selected volume of secondary fluid has been infused. The float is contained in a calibrated volumetric chamber with a drug injection port, and valved connections to primary and secondary solutions. Selected volumes of primary or secondary solution can be added to the chamber and mixed with drugs inserted through the injection port. Fluid in the calibrated chamber raises a float which closes a valve and stops fluid flow from the primary solution source. Fluid from within the chamber flows to the patient until very little fluid remains in the chamber and the float moves downward causing the valve to the primary solution to open allowing a continuous flow of intravenous fluid to the patient.
Please note there is up to 60 days of latency in this Status indicator for certain status conditions. You can obtain up-to-date Status indicator readings by ordering PAIR for the file.
An application with the status "Published" (which means it is pending) may be recently abandoned, but not yet updated to reflect its abandoned status. However, an application filed less than one year ago is unlikely to be abandoned.
A patent with the status "Granted" may be recently expired, but not yet updated to reflect its expired status. However, it is highly unlikely a patent less than 3.5 years old would be expired.
An application with the status "Abandoned" is almost always current, but there is a small chance it was recently revived and the status not yet updated.
This priority date is an estimated earliest
priority date and is purely an estimation. This date should not be
taken as legal conclusion. No representations are made as to the
accuracy of the date listed. Please consult a legal professional
before relying on this date.