Rope-shaped wound dressing
CA 2081132 C · Owner: Wolf, Michael Lee · Inventors: Cartmell, James Vernon; Sturtevant, Wayne R.; Allaire, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a hydrogel wound dressing substantially in the form of a rope and also in the form of a strand. The wound dressing comprises a hydrogel material substantially in a rope configuration or a strand configuration having a predetermined length for filling the cavity of a wound and a dressing removal layer disposed within the strand configuration. The dressing removal layer may extend outwardly from an end so as to form a pull tab which facilitates removal of the rope configuration from the wound. The present invention also provides a wound dressing comprising a hydrogel material substantially in a strand configuration having a predetermined length for filling the …
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 October 22, 1992 and granted November 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 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
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.