Fluid collection device with phase partitioning means
CA 1060862 A · Owner: Sherwood-Medical Industries Inc. · Inventors: Cornell, William D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blood collection device includes a tube for receiving a sample of whole blood for centrifugal separation into the lighter phase plasma, or serum, and the heavier cellular phase. The tube has a needle-pierceable stopper at one end for maintaining a negative pressure in the tube. A blood phase partitioning device is disposed within the tube and includes an upper cylinder member and a lower piston member slidable in the upper member. The cylindrical member has a plurality of peripheral holes therein and a specific gravity greater than that of the piston member with the, members together having a specific gravity between that of the lighter phase and that of the heavier phase. A sealant is …
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 21, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 21, 1996.
- 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.