Abstract:
A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include checking of dialysate bypass status using flow measurement; using a flow sensor to confirm the absence of ultrafiltration during bypass; automatic testing of ultrafiltration function by removal of a discrete volume from a portion of the dialysate flow path coupled with a pressure test of that part of the flow path; using a touch screen user interface; bar graph profile programming of ultrafiltration, sodium, and bicarbonate parameters; using a RAM card to upload treatment instructions to, and to download treatment data from, the machine; automatic setting of proportioning mode (acetate or bicarbonate) based on connections of concentrate lines; predicting dialysate conductivity values based on brand and formulation of concentrates; minimizing no-flow dead time between dialysate pulses; initiating operation in a timed mode from a machine power-off condition; preserving machine mode during machine power-fail condition; calibration scheduling and reminding; automatic level adjusting; and blood leak flow rate detecting.
Abstract:
A hemodialysis apparatus includes: a dialysate-delivery system including at least one unit selected from the group consisting of (i) a dialysate-preparation unit, (ii) a dialysate-circulation unit, (iii) an ultrafiltrate-removal unit, and (iv) a dialysate-monitoring unit; and a user/machine interface operably connected to the dialysate-delivery system, the user/machine interface comprising a touch screen, the touch screen including a screen having (a) a target ultrafiltration display, (b) an ultrafiltration rate display, (c) a transmembrane pressure display, (d) an arterial pressure display, (e) a venous pressure display, (f) a dialysis fluid conductivity display, and (g) a dialysis fluid temperature display; and wherein at least one of the displays of the touch screen is selectable to adjust a setting displayed by the display, the setting used to operate at least one of (i) the dialysate-preparation unit, (ii) the dialysate-circulation unit, (iii) the ultrafiltrate-removal unit, and (iv) the dialysate-monitoring unit.
Abstract:
A printed circuit assembly includes a base printed circuit having a printed circuit receiving area and a plurality of electrical contacts provided on the printed circuit receiving area. The printed circuit assembly also includes a secondary printed circuit having a secondary substrate including a mating edge and a plurality of secondary contacts provided along the mating edge. The secondary printed circuit is mounted on the base printed circuit such that the mating edge of the secondary printed circuit is directly engaged with the base printed circuit at the printed circuit receiving area. Each of the secondary contacts is electrically connected to a corresponding one of the electrical contacts of the base printed circuit.
Abstract:
A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include checking of dialysate bypass status using flow measurement; using a flow sensor to confirm the absence of ultrafiltration during bypass; automatic testing of ultrafiltration function by removal of a discrete volume from a portion of the dialysate flow path coupled with a pressure test of that part of the flow path; using a touch screen user interface; bar graph profile programming of ultrafiltration, sodium, and bicarbonate parameters; using a RAM card to upload treatment instructions to, and to download treatment data from, the machine; automatic setting of proportioning mode (acetate or bicarbonate) based on connections of concentrate lines; predicting dialysate conductivity values based on brand and formulation of concentrates; minimizing no-flow dead time between dialysate pulses; initiating operation in a timed mode from a machine power-off condition; preserving machine mode during machine power-fail condition; calibration scheduling and reminding; automatic level adjusting; and blood leak flow rate detecting.
Abstract:
A printed circuit assembly includes a base printed circuit having a printed circuit receiving area and a plurality of electrical contacts provided on the printed circuit receiving area. The printed circuit assembly also includes a secondary printed circuit having a secondary substrate including a mating edge and a plurality of secondary contacts provided along the mating edge. The secondary printed circuit is mounted on the base printed circuit such that the mating edge of the secondary printed circuit is directly engaged with the base printed circuit at the printed circuit receiving area. Each of the secondary contacts is electrically connected to a corresponding one of the electrical contacts of the base printed circuit.