Cardiac valve prosthesis
CA 1296842 C · Owner: Rau, Gunter · Inventors: Rau, Gunter; Reul, Helmut; Knoch, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cardiac Valve Prothesis, It is a disadvantage of the known monocuspid valve prostheses that, in completely open position for, generating a sufficient opening moment the flow must, be diviated unilaterally with a resultant change of direction of the momentum flux. As a consequence thereof, pressure losses are high and the deadwater area in the aorta ascendens is extensive. The flow is intensively vortexed and subjected to strong fluctuations also in the main flowing phase. In the upper zone of the aortic sinus, a significant stagnation point is formed. Said disadvantages are avoided in the instant invention by an S-shaped curve of the closing body (12) in the skeleton line. The inlet area …
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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 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.