Dialysis apparatus and method for its control
Patent 4614590 Issued on September 30, 1986. Estimated Expiration Date: 
September 28, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 28, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDual phase blood flow system and method of operation Dialysis apparatus Patent #: 4514295 InventorsAssigneeApplicationNo. 06/655731 filed on 09/28/1984US Classes:210/637, Including regulating pressure to control constituent gradient at membrane or to prevent rupture of membrane210/646, Hemodialysis210/90, Fluid pressure responsive604/6.05, Single needle604/6.1, Valve means604/6.11Pumping meansExaminersPrimary: Spear, FrankAttorney, Agent or FirmInternational ClassA61M 1/30 (20060101)Foreign Application Priority Data1983-10-01 DEAbstractA dialysis apparatus utilizes an expansion chamber in parallel with a pump from which the chamber receives blood via a valve. During the return flow phase the pump rotates in the same direction; but, the valve is closed and a valve at the chamber outlet is opened. The pump draws blood from the chamber and transports it to a dialyzer. A control device regulates the pump and valves depending on the time integral of the pump delivery. In each phase, blood is transported until the chamber has received or discharged a predetermined volume. The pump speed is variable during operation. | |
