Self contained wound dressing with micropump
CA 2949821 C · Owner: Smith & Nephew, Inc. · Inventors: Haggstrom, Kurt; Tranchemontagne, Alain; Jinga, Loredana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wound treatment apparatus promotes healing of a wound via the use of a negative pressure , system. The negative pressure system applies negative pressure to the wound through , perforations in a contact layer of a wound dressing. The wound dressing also includes a capillary , layer and an absorbent layer above the contact layer. The capillary layer allows transmission of , fluid away from the wound site. The absorbent layer comprises a super absorbent polymer , material and forms a reservoir for fluid removed from the wound site. Date Recue/Date Received 2020-10-21
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 September 6, 2006 and granted May 18, 2021. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.