Method and apparatus for extruding catheter tubing
CA 2388355 A1 · Owner: Centell, Donald L. · Inventors: Alpert, Lawrence C.; Centell, Donald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Systems and methods for fabricating medical catheters are disclosed. A system in accordance with the present invention includes a first melt pump in fluid communication with an extrusion head, a second melt pump in fluid communication with the extrusion head, a puller arranged to receive extrudate emerging from the extrusion head, a first drive coupled to the first melt pump, a second drive coupled to the second melt pump a third drive coupled to , the puller, an encoder coupled to the third drive and being adapted to measure the length of extrudate passing through the puller and a computer coupled to , the first drive the second drive, the third drive, and the encoder.
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 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2022.
- 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.