Apparatus and method for central venous catheterization
CA 2076668 A1 · Owner: Stuart, Regina K. · Inventors: Bistrain, Bruce R.; Baxter, John K. Iii; Stuart, Regina K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
26-, Abstract of the Disclosure, Disclosed are an apparatus and methods for initial, or replacement, central venous catheterization using a flexible guidewire with markings thereon and a substantially translucent non-thrombogenic catheter. In operation the, guidewire is inserted along a catheter positioned in a vein. The marks on the guidswire are then used to establish, and maintain as constant, the position of the guidewire. Next, the catheter already in the vein is removed by sliding it over the guidewire and, a new catheter is slipped over the guidewire into position. Once the new catheter is positioned the, guidewire is removed.
Read the whole patent
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 8, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2013.
- 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
Timeline From CIPO dates
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.