Patent ID: 6187199
Filing Date: 2001-02-13
Classification: A61M

Abstract:
A method of determining a hemodialysis parameter during hemodialysis comprising the steps of:providing blood to be treated to a blood chamber in a dialyzer, the dialyzer being divided by a semipermeable membrane into the blood chamber and a dialysate chamber;providing dialysate to the dialysate chamber through a dialysate path, wherein the dialysate enters the dialysate chamber through a dialysate chamber inlet and exits the dialysate chamber through a dialysate chamber outlet;changing a characteristic quantity of the dialysate upstream of the dialysate chamber inlet;measuring the characteristic quantity of the dialysate downstream of the dialysate chamber outlet;determining a pulse response of the dialyzer by comparing the measurement of the characteristic quantity of the dialysate downstream to the change in the characteristic quantity of the dialysate upstream; anddetermining the hemodialysis parameter using the pulse response.