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Expired Canadian patentCanada

Apparatus for measuring ultrafiltration during dialysis with longitudinally movable and clampable retention member

CA 1095432 A · Owner: Baxter Travenol Laboratories, Inc. · Inventors: Bellotti, Marc; Schnell, William J.; Munsch, John M.

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Abstract From the Canadian patent

An improved valving system is provided in a dialysis system in which the dialysis solution flow path through the dialyzer may be sealed off adjacent the inlet and outlet of the dialyzer, with the pumped dialysis solution being shunted so that the pump and heater do not need to be turned off. As ultrafiltration takes place over a predetermined period of time it can be directly measured by monitoring the liquid level of a reservoir connected to the sealed portion of the dialysis solution flow path. The dialysis unit itself is held in a bracket which defines the valving system by means of a longitudinally movable and clampable retention member for bearing against the top of and holding the …

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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

  • Granted February 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 10, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 9, 1978
GrantedFebruary 10, 1981
Term endedFebruary 10, 1998
Patent numberCA 1095432 A
Classification (IPC)A61M1/16

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 9, 1978Patent grantedFeb 10, 1981Term endedFeb 10, 1998

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