Implantable endocardial lead with self-healing retractable fixation apparatus
CA 2198100 C · Owner: Spehr, Paul R. · Inventors: Spehr, Paul R.; Frankovich, Mark M.; White, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An implantable endocardial lead (10) with a retractable helix (48). A specialized stylet (50) can be inserted into the lead (10) at the proximal end and passed through the lead to the distal end. Located at the distal end of the lead is a piston (44) supporting the helix (48). The piston is attached to a coiled trifilar conductor (22) and has an electrode (14) adjacent the helix. Immediately adjacent the piston proximally an additional first short coil of wire is interlocked between the wires of the trifilar conductor (22) providing a female thread within the conductor. The stylet has a second single strand short coil segment spot welded to the stylet adjacent a distal end therof. …
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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 December 18, 1995 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2017.
- 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.