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Expired Canadian patentCanada

Apparatus and method for removing obstructions in bodily organs or cavities

CA 1313339 C · Owner: The Regents Of The University Of California · Inventors: Zakko, Salam F.

CIPO record

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

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Abstract From the Canadian patent

A fully automatic organ pressure sensitive apparatus for dislodging and removing obstructions in bodily cavities or organs by both delivering and removing fluid thereto operable by high rate continuous or intermittent infusion of fluid solvent over a set pressure range to effect rapid dissolution and removal of the obstruction without complications to the patient. By continuous feedback monitoring of fluid pressure in the bodily organ or cavity of interest, the apparatus can constantly vary infusion and aspiration rates to maintain the set pressure range. If the pressure persists above or below the set range the, apparatus activates a safety feature leading to a period of maximal aspiration …

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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 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1989
GrantedFebruary 2, 1993
Term endedFebruary 2, 2010
Patent numberCA 1313339 C
Classification (IPC)A61M5/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedApril 10, 1989Patent grantedFeb 2, 1993Term endedFeb 2, 2010

Sources & verification

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