Apparatus for measuring ultrafiltration during dialysis
Patent 4141834 Issued on February 27, 1979. Estimated Expiration Date: 
November 15, 1997. 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.
November 15, 1997. 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 References 3289846 3809246 Negative pressure control system Patent #: 3976574 InventorsAssigneeApplicationNo. 05/851663 filed on 11/15/1977US Classes:210/241, WITH MOVABLE SUPPORT210/321.65, Permeated liquid quantity measurement or control210/929HEMOULTRAFILTRATE VOLUME MEASUREMENT OR CONTROL PROCESSESExaminersPrimary: Adee, JohnAttorney, Agent or FirmInternational ClassA61M 1/16 (20060101)AbstractAn improved valving system is provided in a dialysis system in which the dialysis solution flow path through the dialyzer may be sealed off adjacent the inlet and outlet of the dialyzer, with the pumped dialysis solution being shunted so that the pump and heater do not need to be turned off. As ultrafiltration takes place over a predetermined period of time, it can be directly measured by monitoring the liquid level of a reservoir connected to the sealed portion of the dialysis solution flow path. | |
