Coaxial cannula with sealing element
CA 2520607 C · Owner: C.R. Bard, Inc. · Inventors: Heske, Norbert F.; Heske, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a coaxial cannula (1) for extracting samples from tissue comprising a, biopsy needle unit (9) provided with a space for sample extraction and a sample separation unit, (21) which coaxially encompasses the biopsy needle (9) on an external wall and is longitudinally, movable. The inventive coaxial cannula (1) comprises a sealing element (3) which is arranged on, the proximal end thereof and closes the space between the internal wall of the coaxial cannula, and the external wall of the sample separation unit. Said coaxial cannula (1) is characterised in, that the sealing element (3) opens an air outlet when the biopsy needle unit (9) is inserted, and, prevents …
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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 March 29, 2004 and granted July 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2026.
- 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.