Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Reexamination Certificate
2005-08-09
2005-08-09
Kim, John (Department: 1723)
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
C073S861000, C073S861050, C073S861070, C073S861080, C073S861180, C210S745000, C210S746000, C210S805000
Reexamination Certificate
active
06926838
ABSTRACT:
The measurement of blood flow in a dialysis shunt is obtained by injection of an indicator material into a venous line leading from dialysis equipment to the shunt. The blood flow in an arterial line leading from the shunt at a location downstream of the venous line to the dialysis equipment is monitored by an arterial line sensor for the presence of the indicator material. A detector connected to the sensor provides a dilution curve in response to the presence of the indicator material and the blood flow in the shunt is calculated from the area under the dilution curve. The locations of the arterial and venous lines in the shunt can be reversed to obtain a measurement of blood recirculation from the venous line into the arterial line.
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Krivitski Nikolai M.
MacGibbon David R.
Harter Secrest & Emery LLP
Kim John
Salai Esq. Stephen B.
Shaw Esq. Brian B.
Transonic Systems Inc.
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