Hydraulic syringe drive
CA 1204975 A · Owner: Alaris Medical Systems, Inc. · Inventors: Cox, Nigel; Snyder, Daniel R.; Whitehouse, Craig M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A syringe driving unit comprising free pistons (16,25) in interconnected cylindrical chambers (12,13) one of the pistons carrying a syringe plunger driver (31) and being biased, directly or indirectly in the, driving direction, and one piston (16) being movable to force both pistons into primed or loaded positions the connections between the chambers including a pressure regulator (39), flow regulator (111) and a needle valve (110) to regulate adjustably the return flow or hydraulic fluid corresponding to the movement of the driving piston. The priming piston (16) may be moved mechanically or pneumatically, and a fail safe mechanism may be provided, if needed, to become effective …
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 May 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 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.