Multi-lumen epidural-spinal needle
CA 1294502 C · Owner: Coombs, Dennis W. · Inventors: Coombs, Dennis W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The needle of the present invention is a multi-lumen needle and preferably a dual-lumen epidural-spinal needle. The needle of the present invention is provided with a hub which allows for attachment of a syringe to one or more of the lumina, or alternatively the attachment of an adapter to which a syringe can be attached. Preferably the lumina have different cross sectional areas. The smaller of the lumina should be of sufficient size to allow a spinal needle guide, wire, or micro-catheter to be inserted through the lumen. The larger of the two lumina should preferably be of sufficient size to allow an epidural catheter spinal needle, or guide wire to be introduced. The needle of the …
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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
- 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.