Catheter
CA 2082315 C · Owner: Becton, Dickinson And Company · Inventors: Pearsall, Harold I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catheters are provided with modified distal ends which reduce substantially the trauma to patients during placement of the catheter of the invention in a patient. The distal end has a very soft-tip of specific range of length to provide proper control without trauma during placement. Moreover the very soft tip has a rounded front end to eliminate any sharp edges for insertion in the patient. The invention includes a specific method in which the catheter body and soft tip are formed separate and comprised of very soft Shore A hardness ranges, and joined together by melt-bonding with RF bonding to minimize the extent the two parts are subjected to melting, and therefore minimize surface …
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 November 6, 1992 and granted March 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.