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Expired Canadian patentCanada

Peritoneal dialysis apparatus

CA 2042449 C · Owner: Medionics International Inc. · Inventors: Agarwal, Mahesh; Dadson, Joseph E.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An apparatus for carrying out peritoneal dialysis includes a central manifold, a receptacle for waste dialysate, means for supporting and heating a plurality of fresh dialysate bags, a first conduit connecting the manifold with the patient catheter, a second conduit for connecting the manifold with the receptacle and a, plurality of additional conduits connecting the manifold individually with a plurality of fresh dialysate bags. The individual conduits can be selectively closed by clamping means controlled by an electronic control and, the latter has an automatic mode which cycles the apparatus through (a) a fill/dwell phase in which the contents of one of the fresh dialysate bags flows …

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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

  • Filed May 13, 1991 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 13, 1991
GrantedFebruary 4, 1997
Term endedMay 13, 2011
Patent numberCA 2042449 C
Classification (IPC)A61M1/28 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMay 13, 1991Patent grantedFeb 4, 1997Term endedMay 13, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.