Iontophoresis, electroporation and combination catheters for local drug delivery to arteries and other body tissues
CA 2326786 A1 · Owner: Global Vascular Concepts, Inc. · Inventors: Brown, Charles L. Iii; Freear, Steven; Crawford, Neville
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a catheter-based device for enhancing the local delivery of drugs, pharmaceuticals, plasmids, genes and other agents into the wall , tissues of tubular compartments of the living body. One catheter device (16) provides an electrical driving force that can increase the rate of migration of drugs, other therapeutic agents out of a polymer matrix into body tissues and cells using iontophoresis only. Another device (16) uses iontophoresis only, electroporation only, or combined iontophoresis and electroporation. In the latter device (16), the two procedures may be applied sequentially in any order without removing or repositioning the catheter.
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 April 8, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2021.
- 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.