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Expired Canadian patentCanada

Steerable guidewire

CA 1278728 C · Owner: Leoni, Gianni · Inventors: Leoni, Gianni

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

A small diameter steerable guidewire with uniform flexibility in its distal region particularly well suited for PTCA use is provided. The guidewire has a diameter of less than 0.50 mm and is formed from an elongated substantially cylindrical main core wire with a distal cylindrical region of reduced diameter at the distal end of the core wire. A safety wire is attached to the distal end of the region of reduced diameter and a safety tip attached to the distal end of the safety wire and coil. The safety wire and coil may be formed of a radio opaque material so the position of the wire can be accurately determined when in use.

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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 22, 1987
GrantedJanuary 8, 1991
Term endedJanuary 8, 2008
Patent numberCA 1278728 C
Classification (IPC)A61M25/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 22, 1987Patent grantedJan 8, 1991Term endedJan 8, 2008

Sources & verification

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