Method and device for exchanging cardiovascular guide catheter while a previously inserted angioplasty guide wire remains in place
CA 2099579 A1 · Owner: Teirstein, Paul S. · Inventors: Dhuwalia, Jagdish C.; Nita, Henry; Teirstein, Paul S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and device for removing a first guide catheter (10) and replacing said first guide catheter with a second guide catheter (10a), without disturbing the placement of a flexible guide wire (32) which has previously been inserted through the first guide catheter. The device of the invention comprises an "exchange catheter" (58) which may be advanced over the outer surface of the pre-positioned guide wire to provide support and shielding of the guide wire during the catheter exchange procedure. A guide wire exit aperture (74) formed in the "exchange catheter" permits the guide wire to exit the exchange catheter at a location whereby the operator may hold and manipulate the guide wire …
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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 February 27, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.