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 remo
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.
대표청구항▼
We claim: 1. A hemodialysis machine comprising: at least one dialysate pump configured to move dialysate to a dialyzer; a blood pump configured to move blood to the dialyzer; and a video screen and at least one processor configured to (a) enter a total time and a cumulative ultrafiltration value, (
We claim: 1. A hemodialysis machine comprising: at least one dialysate pump configured to move dialysate to a dialyzer; a blood pump configured to move blood to the dialyzer; and a video screen and at least one processor configured to (a) enter a total time and a cumulative ultrafiltration value, (b) automatically calculate a constant ultrafiltration rate from the cumulative ultrafiltration value and the total time, (c) display the constant rate on the video screen, (d) enable a plurality of ultrafiltration values as steps over time forming an ultrafiltration profile to be entered thereafter via selection of a profile ultrafiltration option displayed on the video screen, (e) use the constant calculated rate so that the cumulative ultrafiltration value is removed, through the dialyzer, within or over the total time, according to the constant rate, or (f) display a shape of the ultrafiltration profile on the video screen and use the ultrafiltration profile alternatively so that thereafter the cumulative ultrafiltration value is removed, within or over the total time, according to the values as steps over time of the ultrafiltration profile. 2. The hemodialysis machine of claim 1, wherein the video screen displays indicia corresponding to the ultrafiltration profile, the indicia selectable to enable the ultrafiltration profile to be entered. 3. The hemodialysis machine of claim 2, wherein the video screen is further configured to enable the total time and the cumulative ultrafiltration value to be entered after selection of the profile ultrafiltration option and before entry of the ultrafiltration profile. 4. The hemodialysis machine of claim 1, wherein the at least one processor is further configured to use the constant ultrafiltration rate unless the ultrafiltration profile is entered. 5. The hemodialysis machine of claim 1, which is configured to display the total time, cumulative ultrafiltration value and profile ultrafiltration option on a same screen of the video screen. 6. The hemodialysis machine of claim 1, which includes digits selectable to enter at least one of the cumulative ultrafiltration value and the total time. 7. The hemodialysis machine of claim 1, wherein the cumulative ultrafiltration value includes at least one of (i) a total ultrafiltration volume and (ii) a total amount of fluid loss per the treatment time. 8. The hemodialysis machine of claim 1, wherein the total time is a total treatment time. 9. The hemodialysis machine of claim 1, wherein the video screen is configured to display (i) a first screen showing the constant rate and (ii) a second screen showing the ultrafiltration profile. 10. The hemodialysis machine of claim 1, wherein the video screen is configured to display each of the entered total time, an entered cumulative ultrafiltration value, the constant ultrafiltration rate and the entered ultrafiltration profile. 11. A method of operating a dialysis machine including at least one dialysate pump configured to move dialysate to a dialyzer, a blood pump configured to move blood to the dialyzer, a video screen and at least one processor, the method comprising: enabling a total time and a cumulative ultrafiltration value to be entered; calculating a constant ultrafiltration rate by which the dialysis machine operates to remove the cumulative ultrafiltration value over the total time; displaying the rate on the video screen; displaying a profile ultrafiltration option on the video screen; enabling a plurality of ultrafiltration values as steps over time forming an ultrafiltration profile to be entered thereafter via a selection of the profile ultrafiltration option; removing the cumulative ultrafiltration value, through the dialyzer, within or over the total time, according to the constant ultrafiltration rate; and if the ultrafiltration profile is entered, displaying a shape of the ultrafiltration profile on the video screen and removing the cumulative ultrafiltration value, within or over the total time, alternatively according to the values as steps over time of the ultrafiltration profile. 12. The method of claim 11, which includes displaying each of the entered total time, an entered cumulative ultrafiltration value, the calculated ultrafiltration rate and the entered ultrafiltration profile on the video screen. 13. The method of claim 11, which includes enabling the total time and the cumulative ultrafiltration value to be entered after selection of the profile ultrafiltration option and before entry of the ultrafiltration profile. 14. The method of claim 11, which includes enabling at least one of the total time and cumulative ultrafiltration value to be entered digitally. 15. The method of claim 11, wherein the cumulative ultrafiltration value includes at least one of (i) a total ultrafiltration volume and (ii) a total amount of fluid loss per the treatment time. 16. The method of claim 11, wherein entering the total time includes entering a total treatment time. 17. The method of claim 11, which includes at least one of: calculating the constant ultrafiltration rate (i) automatically and (ii) from the entered total time and the cumulative ultrafiltration value, wherein the cumulative ultrafiltration value is a total ultrafiltration volume. 18. The method of claim 11, which includes enabling the ultrafiltration profile to be entered separately from an entry of the cumulative ultrafiltration value. 19. The method of claim 11, which includes removing the cumulative ultrafiltration value via the dialyzer, within or over the total time, according to the constant ultrafiltration rate unless the ultrafiltration profile is entered.
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이 특허에 인용된 특허 (120)
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