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Expired Canadian patentCanada

Clinically practical rotational angioplasty system

CA 1320889 C · Owner: Slota, Michael W. · Inventors: Clement, Thomas J.; Intlekofer, Michael J.; Slota, Michael W.

CIPO record

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Abstract From the Canadian patent

The present invention is a clinically practical rotational angioplasty system which employs a unique rotary ablative device for mechanically abrading and, thereby removing, lesions from within a patient's vessels. The device, called a "Rotablator" by its inventors, has a gas driven prime mover with an integrated water pump and fiberoptic tachometer. The prime mover is connected, via a hollow helical drive assembly, to an ellipsoidal, rotating, ablative burr which is used for the actual recannilization of the patient's vessel. The burr is provided with a central opening therethrough, which, together with the hollow drive assembly, permits the burr and drive assembly to be threaded over a …

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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 August 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 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.
FiledNovember 16, 1987
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1320889 C
Classification (IPC)A61B17/22

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 16, 1987Patent grantedAug 3, 1993Term endedAug 3, 2010

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