Liquid infusion unit
CA 1063475 A · Owner: Alza Corporation · Inventors: Buckles, Richard G.; Kehr, Sharon; Hoff, Seymour
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid infusion unit for infusing liquid drug continuously into a patient at a controlled rate is disclosed. The unit comprises: a housing that is adapted to be attached to the patient; a removable refillable liquid, drug cartridge that fits into a recess in the housing exterior; a liquid drug flow passageway enclosed within the housing whose inlet connects with the cartridge outlet; an adjustable flow controller in the passageway that regulates precisely the flow rate of liquid drug; a conduit connected to the outlet of the passageway that extends to the infusion site; and a catheter or needle connected to the end of the conduit that is inserted into the patient at the infusion site.
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 October 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 2, 1996.
- 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.