Helical ureteral stent
CA 1209754 A · Owner: Bard (C. R.), Inc. · Inventors: Norton, William J.; Wolosky, Irwin S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ureteral stent for maintaining drainage of urine between the kidney and the bladder including an elongated flexible silicone tubular member having series of helical coils on its distal end, the longitudinal axis of which is parallel to the tubular member. A retention coil is formed on the proximal end of the tubular member for reception in the renal pelvis and drainage holes are formed along the length of the stent. The stent is straightened for insertion by means of a wire guide.
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
- Granted August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.