Airless artificial kidney assembly
Patent 4412916 Issued on November 1, 1983. Estimated Expiration Date: 
June 24, 2001. 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.
June 24, 2001. 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 3447570 3523408 3554035 3713341 3778971 3854907 Hydrophobic valve Parenteral liquid administration set with non-air blocking filter Isolating and blood pressure transmitting apparatus for extracorporeal blood treatment system Infusion tube access site InventorAssigneeApplicationNo. 06/276751 filed on 06/24/1981US Classes:210/90, Fluid pressure responsive210/188, WITH GAS SEPARATOR210/262, On different levels210/296, Including liquid as a separating medium210/300, Alternate filters and traps in series210/309, Attached to filter element210/321.65, Permeated liquid quantity measurement or control210/335, In series for prefilt flow210/436, Vented210/456, Prefilt flow distributor or diverter210/472, Vented55/421, WITH MEANS FOR LIQUID SEPARATION96/219And fluid filterExaminersPrimary: Sadowski, David R.Attorney, Agent or FirmInternational ClassesA61M 1/36 (20060101)B01D 19/00 (20060101) AbstractThe invention provides an artificial kidney extracorporeal circuit assembly including an artificial kidney having detachably attached multifunctional subassembly means for automatically venting gas bubbles from liquid flowing therethrough, for continuously sensing the liquid pressure of and for filtering said liquid, together with blood tubes for connecting a patient's artery to the kidney and the subassembly outlet port to a patient's vein.The subassembly includes means associated with a hydrophobic gas bubble vent which prevent clogging, minimize blood clotting and insure against ambient gas entry through the vent.Field of SearchResponsive to fluid flowFluid pressure responsive Transparent Vent control WITH GAS SEPARATOR Diverse Including multiple operation unit On different levels Including a filter Including liquid as a separating medium Alternate filters and traps in series Baffle preceding or within sediment trap Deflecting prefilt from filter medium Downstream of filter medium Directly communicating with tubular filter interior Attached to filter element Lateral trap In series for prefilt flow Vented | |
