Method and apparatus for kidney dialysis
First Claim
1. In a method of operating a hemodialysis machine, an improvement in a man/machine interfacing process used in changing a treatment parameter, the improvement comprising:
- providing a touch screen interface with an indicia thereon corresponding to a treatment parameter;
touching the indicia;
in response to said touching, invoking a new keypad display on a region of the touch screen;
entering a numeric parameter corresponding to the treatment parameter by touching one or more buttons of the displayed keypad;
touching a first region of the keypad to signal end of entry of the numeric parameter;
displaying on the touch screen a button soliciting verification of the newly entered numeric parameter;
touching the button soliciting verification; and
in response to said actions, causing the treatment parameter to be changed;
wherein erroneous changes of treatment parameters are minimized.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
41 Claims
-
1. In a method of operating a hemodialysis machine, an improvement in a man/machine interfacing process used in changing a treatment parameter, the improvement comprising:
-
providing a touch screen interface with an indicia thereon corresponding to a treatment parameter;
touching the indicia;
in response to said touching, invoking a new keypad display on a region of the touch screen;
entering a numeric parameter corresponding to the treatment parameter by touching one or more buttons of the displayed keypad;
touching a first region of the keypad to signal end of entry of the numeric parameter;
displaying on the touch screen a button soliciting verification of the newly entered numeric parameter;
touching the button soliciting verification; and
in response to said actions, causing the treatment parameter to be changed;
wherein erroneous changes of treatment parameters are minimized. - View Dependent Claims (2, 3)
-
-
4. A method of programming a time varying parameter in a process control system, the method comprising the steps:
-
providing a touch screen interface;
displaying on the touch screen first and second axes, the first axis corresponding to the time varying parameter, the second axis corresponding to time;
touching the touch screen at a plurality of points to define points on a parameter versus time curve;
presenting on the touch screen a series of bars corresponding to said curve;
selecting one of said bars for alteration;
displaying a numeric parameter corresponding to the selected bar on the screen;
touching the screen at first or second locations to increase or decrease, respectively, the displayed numeric parameter and thereby alter the value of the parameter to which the selected bar corresponds;
touching the screen at a third location to signify completion of the programming; and
storing data corresponding to the bars in a memory to which the process control system can refer in changing the parameter with time. - View Dependent Claims (5, 6, 7)
-
-
8. A method of operating a dialysis machine to establish desired treatment parameters, the method comprising the steps:
-
providing first and second data card interface devices, the first device being associated with a computer, the second device being associated with the dialysis machine;
operating the computer in conjunction with the first data card interface device to load into a data card a set of desired treatment parameters, said set including parameters relating to three or more of the following;
ultrafiltration profile;
sodium profile;
bicarbonate profile;
blood pump flow rate;
treatment time;
dialysate flow rate;
dialysate temperature;
blood pressure measurement schedule;
blood pressure alarm limits; and
heparin prescription operating the dialysis machine in conjunction with the second data card interface device to read from said data card said treatment parameters; and
for each of said parameters;
displaying on a display device associated with the dialysis machine said parameter;
querying, via the display device, whether the displayed parameter is correct and soliciting operator verification of same; and
establishing the displayed parameter as a treatment parameter only if the operator verifies said parameter.
-
-
9. A kidney dialysis machine comprising:
-
a dialyzer with a dialysate compartment, a blood to compartment separated from the dialysate compartment by a dialysis membrane, a dialysate input, a dialysate output, a blood input, and a blood output;
means for preparing dialysate and means for circulating the dialysate through a dialysate circuit, the dialysate circuit including the dialysate compartment, the dialysate input and the dialysate output of the dialyzer;
means for effecting extracorporeal circulation of blood from a dialysis patient through a blood circuit, the blood circuit including the blood compartment, the blood input, and the blood output of the dialyzer; and
means for effecting a preselected net passage of liquid from the blood compartment through the dialysis membrane to the dialysate compartment. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A kidney dialysis machine as recited in claim 29 further comprising a microprocessor operable to control operation of activatable machine components, receive data from said machine components pertaining to operational status of said machine components, generate warning messages if the machine components operate outside preset operational limits, store said warning messages in the electronic memory, and recall and display said warning messages on demand by a machine operator.
-
30. A hemodialysis apparatus, comprising:
-
(a) means for delivering extracorporeal blood to a hemodialyzer and for controlling at least one extracorporeal-blood parameter selected from the group consisting of (i) blood-flow rate, (ii) arterial pressure, (iii) venous pressure, and (iv) anticoagulant delivery to the extracorporeal blood; and
(b) a user/machine interface operably connected to said means for delivering extracorporeal blood, the user/machine interface comprising a touch screen adapted to display an indicium corresponding to a parameter pertinent to operation of the hemodialysis machine and to permit the user, by touching the indicium, to cause a change in the parameter.
-
-
31. A hemodialysis apparatus, comprising:
-
(a) a dialysate-delivery system for supplying dialysate to a hemodialyzer, the dialysate-delivery system comprising 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
(b) a user/machine interface operably connected to the dialysate-delivery system, the user/machine interface comprising a touch screen adapted to display an indicium corresponding to a parameter pertinent to operation of the hemodialysis machine and to permit the user, by touching the indicium, to cause a change in the parameter.
-
-
32. A hemodialysis apparatus, comprising:
-
(a) a dialysate-delivery system connectable to a hemodialyzer for supplying dialysate to the hemodialyzer, the dialysate-delivery system comprising 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;
(b) an extracorporeal blood-delivery system connectable to the hemodialyzer for routing extracorporeal blood to the hemodialyzer in coordination with the dialysate-delivery system, the extracorporeal blood-delivery system comprising at least one unit selected from a group consisting of (i) a blood-circulating unit, and (ii) a blood-monitoring unit;
(c) a controller connected to and controllably operating the dialysate-delivery system and the extracorporeal blood-delivery system; and
(d) a touch screen connected to the controller, the touch screen adapted to display an indicium corresponding to a parameter pertinent to operation of the hemodialysis apparatus and to permit a user, by touching the indicium, to cause a change in the parameter.
-
-
33. A hemodialysis apparatus, comprising:
-
(a) first and second systems operably connected with each other, the first system being operable to deliver extracorporeal blood from a source to a blood compartment of a hemodialyzer, and the second system being operable to deliver dialysate from a source to a dialysate compartment of the hemodialyzer; and
(b) a touch screen connected to the first and second systems, the touch screen adapted to display an indicium corresponding to a parameter pertinent to operation of the first and second systems and to permit a user, by touching the indicium, to cause a change in the parameter.
-
-
34. A hemodialysis apparatus, comprising:
-
(a) a dialysate-delivery system for supplying dialysate to a hemodialyzer, the dialysate-delivery system comprising 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
(b) a user/machine interface operably connected to the dialysate-delivery system, the user/machine interface comprising a touch screen that displays information corresponding to a setting of a parameter pertinent to operation of the hemodialysis machine, the touch screen being operable to display an indicium permitting the user to perform, using the touch screen, at least one step of a procedure for changing the setting of the parameter. - View Dependent Claims (35, 36)
-
-
37. A hemodialysis apparatus, comprising:
-
(a) an extracorporeal-blood-delivery system for supplying extracorporeal blood to a hemodialyzer, the extracorporeal-blood-delivery system comprising at least one unit selected from the group consisting of (i) a blood-circulating unit, and (ii) a blood-monitoring unit; and
(b) a user/machine interface operably connected to the extracorporeal-blood-delivery system, the user/machine interface comprising a touch screen that displays information corresponding to a setting of a parameter pertinent to operation of the hemodialysis machine, the touch screen being operable to display an indicium permitting the user to perform, using the touch screen, at least one step of a procedure for changing the setting of the parameter. - View Dependent Claims (38, 39)
-
-
40. A hemodialysis apparatus, comprising:
-
(a) a dialysate-delivery system connectable to a hemodialyzer for supplying dialysate to the hemodialyzer, the dialysate-delivery system comprising 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;
(b) an extracorporeal-blood-delivery system connectable to the hemodialyzer for routing extracorporeal blood to the hemodialyzer in coordination with the dialysate-delivery system, the extracorporeal blood-delivery system comprising at least one unit selected from a group consisting of (i) a blood-circulating unit, and (ii) a blood-monitoring unit;
(c) a controller connected to and controllably operating the dialysate-delivery system and the extracorporeal-blood-delivery system; and
(d) a user/machine interface operably connected to the dialysate-delivery system and the extracorporeal-blood-delivery system, the user/machine interface comprising a touch screen that displays information corresponding to a setting of a parameter pertinent to the hemodialysis machine, the touch screen being operable to display an indicium permitting the user to perform, using the touch screen, at least one step of a procedure for changing the setting of the parameter.
-
-
41. A hemodialysis machine, comprising:
-
(a) means for controlling a dialysate parameter selected from a group consisting of dialysate temperature and dialysate concentration, and means for delivering the dialysate to a dialysate compartment of a hemodialyzer; and
(b) a user/machine interface operably connected to said means for controlling the dialysate parameter, the user/machine interface comprising a touch screen adapted to display an indicium corresponding to a parameter pertinent to operation of the hemodialysis machine and to permit the user, by touching the indicium, to cause a change in the parameter.
-
Specification