Method and apparatus for vein fluid removal in heart failure
Patent 6890315 Issued on May 10, 2005. Estimated Expiration Date: July 18, 2020. 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.
604/6.09, Filter means604/5.01, Constituent removed from blood and remainder returned to body604/6.11, Pumping means604/6.16, Body inserted tubular conduit structure604/6.06, Arterial and venous needles604/65, Material flow varying means controlled by condition responsive sensor604/66, Sensor responsive to body condition604/67, Sensor controls pump, motor, or pressure driven means210/645, Biological fluid (e.g., blood, urine, etc.)210/646, Hemodialysis210/649, Diffusing or passing through septum selective as to material of a component of liquid210/650, Filtering through membrane (e.g., ultrafiltration)210/651, Removing specified material210/90Fluid pressure responsive
A method and apparatus for ultrafiltration of blood operating by removing blood from a peripheral blood vessel at a rate of less than two percent of total cardiac output of a patient, extracting fluid at a rate of 0.1 liter to 1.0 liters per hour while retaining cells and proteins in the blood, and returning the concentrated blood to a secondary blood vessel is disclosed. Blood is removed and returned using small gage needles. As a pump circulates blood from the patient, a filter removes ultrafiltrate from the blood using duty cycle or pump control, and a transparent container collects the removed fluid.
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