Intravenous fluid flow monitor
CA 1279800 C · Owner: Alaris Medical Systems, Inc. · Inventors: Philip, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved system for monitoring the fluid flow through a fluid delivery system to a patient wherein the fluid flow rate is varied in a predetermined sequential manner. Corresponding changes in pressure in the line connecting the vein of a patient and the pump are detected and are used to derive signals indicative of the resistance or impedance in the line, which in turn can be used to determine whether the vain is normal, whether it is phlebitic whether it, is occluded, whether infiltration of the canula into the patient's soft tissue has occurred or whether the, continuity of tubing to the vein has been interrupted.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.