Medical Apparatus and Method for Setting Up a Medical Apparatus

• US 20080209357A1
• Filed: 06/09/2005
• Published: 08/28/2008
• Est. Priority Date: 06/09/2005
• Status: Active Grant

• Current Assignee: Gambro Lundia AB (Baxter International Inc.)
• Original Assignee: Gambro Lundia AB (Baxter International Inc.)
• Inventors: Cavicchioli, Giovanni Paolo, Vasta, Alessandro, Gazzotti, Roberto
• Granted Patent: US 7,922,899 B2
• Time in Patent Office: Days
• US Class Current: 715/771
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 1/1613 Profiling or modelling of patient or predicted treatment evolution or outcome
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

A medical apparatus comprises a user interface for setting parameters and includes: a screen for visualizing values of said parameters, a main control unit connected to the interface, a first memory and a video memory both connected to the main control unit for storing data corresponding to images on screen; the main control unit allows setting of a new value for a parameter, displays the new value on a screen region, stores the new value in the first memory, captures from the video memory data representative of said screen region, verifies from said representative data if the displayed value corresponds to the value in the first memory. A method for setting up a medical apparatus is also disclosed.

Claims

1. Medical apparatus comprising:

at least a user interface for enabling setting of a plurality of parameters pertinent to operation of said apparatus or pertinent to a treatment to be performed by said apparatus, the user interface including at least a screen for visualization of values of said parameters,

a control system within said apparatus for controlling operation of said medical apparatus and responsive to actions by a user on said user interface,

said control system including;

a main control unit, connected to the user interface,

a first memory connected to the main control unit,

a video memory also connected to the main control unit for storing data corresponding to images visualized on said screen,

said main control unit being programmed for executing the following steps;

allowing setting of a new value for at least a parameter;

displaying the new value on a region of the screen;

storing the new value in the first memory;

capturing from the video memory data representative of said region of the screen where at least the value of the entered parameter is being graphically displayed;

verifying from said representative data if the value graphically displayed in said region corresponds to the value stored in said first memory.

2. Medical apparatus according to claim 1, wherein the control system includes a second memory connected to the main control unit, and wherein after said verification step the main unit is programmed to execute a step of storing the value in the second memory if said verification reveals identity between the value graphically represented in said region and the value entered in the first memory.

3. Medical apparatus according to claim 1, wherein the verification step includes the steps of:

recognizing from said data the numeric value graphically represented in said region; and

comparing said numeric value to the value of the same parameter stored in the first memory.

4. Medical apparatus according to claim 1, wherein the verification step comprises the following:

referring to a plurality of sets of graphic data, each set being representative of a known pattern,

comparing the captured data with the sets of graphic data for determining if the captured data contain an identifiable content;

in case the captured data contain an identifiable content, comparing said identifiable content with value of the parameter stored in the first memory.

5. Medical apparatus according to claim 1, wherein the verification step includes the steps of converting the value entered in the first memory in data graphically representing said value;

comparing the data graphically representing the value entered in the first memory to said data representative of the region of the screen where the value of the entered parameter is being displayed.

6. Medical apparatus according to claim 5, wherein, said recognition step comprising the following sub-steps:

referring to a plurality of sets of graphic data, each set being representative of a known pattern;

converting the value entered in the first memory in data graphically representing said value by using said sets of graphic data.

7. Medical apparatus according to claim 1, wherein:

the main control unit is programmed to execute a first and a second task,

the first task when executed by the control unit determining execution of said steps of allowing selection, modification and entry of the value in the first memory;

the second task when executed by the control unit determining execution of said step of capturing data from the video memory and of said verification step,

said second task being activated upon receipt from the first task of a new set message informing the second task that a new parameter value has been entered.

8. Medical apparatus according to claim 7, wherein said new message is sent by the control unit during execution of the first task only once the new value is stored in said first memory.

9. Medical apparatus according to claim 7, wherein said new set message contains the following information to allow the second task to perform the screen region capture:

information relating to the identity of message

information relating to coordinates of the screen region where the value is displayed.

10. Medical apparatus according to claim 7, wherein the second task when executed by the main control unit causes the step of periodically comparing the values of the parameters in the first memory to the values of the corresponding parameters in the second memory.

11. Medical apparatus according to claim 7, wherein the first task when executed by the main control unit determines a step of detecting if the value under modification refers to safety relevant parameters which are a subset of said plurality of parameters, said message is sent only in case of modification in the setting of safety relevant parameters.

12. Medical apparatus according to claim 1, wherein said capturing step comprises a step of capturing from video memory second data representative of a second region of the screen where the name of the entered parameter is being displayed, verifying if the name graphically displayed in said second region corresponds to a pre-stored name for the same parameter.

13. Medical apparatus according to claim 1, wherein said capturing step comprises a step of capturing from video memory third data representative of a third region of the screen where the unit of measure for the entered parameter is being displayed;

verifying if said unit graphically displayed in said third region corresponds to a pre-stored unit of measure for the same parameter.

14. Medical apparatus according to claim 1, wherein said step of allowing setting of a new value comprises a step of range checking to verify if the value that is being set is within a predetermined range of acceptable values, and a subsequent step of activating the possibility to enter in the first memory said set value only if said range checking step is positively passed.

15. Medical apparatus according to claim 7, wherein said second task when executed by the main control unit provides for the following consecutive steps to be executed after said verification step:

a range check step verifying if the value that is being set is within a predetermined range of acceptable values,

a step of storing the value in the second memory if at least the following conditions are both complied with;

said verification reveals identity between the value graphically represented in said region and the value entered in the first memory, and the range checking step confirms the value is within said predetermined range.

16. Medical apparatus according to claim 7, wherein the second task when executed by the main control unit disables possibility for modifying said region until the capturing step is completed.

17. Medical apparatus according to claim 1, wherein said main control unit is programmed for executing the following steps before allowing setting of a new value for a parameter:

displaying an indicium on said screen corresponding to a treatment parameter;

allowing selection of the indicium for identifying the parameter a user intends to modify.

18. Medical apparatus according to claim 17, wherein:

the screen comprises a touch screen,

and wherein said step of allowing selection of the indicium comprises detecting a touching of said indicium,

said step of allowing setting of a parameter value comprises the following steps;

in response to said touching, invoking a data-entry display on the touch screen said data entry display having at least two set buttons and an enter key;

receiving a setting a parametric value corresponding to the treatment parameter by touching one or more buttons of the data-entry display;

detecting the touching of said enter key for signifying setting has been completed and entering the set value.

19. Medical apparatus according to claim 17, wherein:

the screen comprises a touch screen,

the user interface comprises at least an enter hard key off of said touch screen and connected to the user interface,

and wherein;

said step of allowing selection of the indicium comprises detecting a touching of said indicium,

said step of allowing setting of a parameter value comprises the following steps;

in response to said touching, invoking a data-entry display on a region of the touch screen said data entry display having at least two set buttons;

receiving a setting a parametric value corresponding to the treatment parameter by touching one or more buttons of the data-entry display;

detecting the touching of said enter key for signifying setting has been completed.

20. Medical apparatus according to claim 17, wherein:

the screen comprises a touch screen,

and wherein said step of allowing selection of the indicium comprises detecting a touching of said indicium,

said step of allowing setting of a parameter value comprises the following steps;

in response to said touching, activating on the touch screen at least two set buttons and an enter key;

receiving a setting a parametric value corresponding to the treatment parameter by touching one or more buttons;

detecting the touching of said enter key for signifying setting has been completed.

21. Medical apparatus according to claim 11 comprising a dialysis liquid preparation module for preparing dialysis liquid to be sent into a blood treatment unit, and at least a waste line for receiving spent dialysate removed from the blood treatment unit.

22. Medical apparatus according to claim 21 comprising:

a blood removal tubing, a blood return tubing, and a blood treatment unit having a first chamber connected to dialysis liquid preparation module and to the waste line, and a second chamber connected to the blood removal and to the blood return tubing, said first and second chamber being separated by a semipermeable membrane.

23. Medical apparatus according to claim 22, wherein the safety relevant parameters are one or more selected in the group comprising:

Temperature of the dialysis liquid,

Conductivity of the dialysis liquid,

Flow rate of the dialysis liquid,

Flow rate of the spent dialysate,

Flow rate of the blood in the in one of said tubing,

Ultrafiltration rate through the semipermeable membrane,

Net weight loss rate,

Treatment time,

Weight loss.

24. Medical apparatus according to claim 7 comprising:

a first slave main control unit connected to the main control unit, said first slave control unit having a respective memory,

a second slave main control unit connected to the main control unit but not directly connected to the first slave main control unit, said second slave control unit having a respective memory,

a plurality of first actuators connected to and controlled by the slave main control unit and not directly controlled by the main control unit,

a plurality of first sensors connected to the first slave control unit and not directly connected to the main control unit,

a plurality of second sensors connected to the second slave control unit and not directly connected to the main control unit

the first task sending the values of any entered parameters to the first slave control unit, this latter being programmed for saving said values in its memory and for controlling said actuators so that the difference between the actual values sensed by the first sensors for said parameters and the set values of the corresponding parameters is within a range of acceptability,

the second task sending the values of safety relevant parameters entered in the second memory to said second slave control unit, this latter being programmed for storing said values in its memory and for signalling if the difference between the actual values sensed by the second sensors for said parameters and the set values of the corresponding parameters in the memory of the second slave unit is outside a range of acceptability.

25. Medical apparatus according to claim 24, wherein the second task comprises the step of periodically comparing the values of the parameters in the second memory to the values of the corresponding parameters in the memory of the second slave unit.

26. Medical apparatus according to claim 1, wherein said main control unit is programmed for executing the step of allowing setting of a new value for a plurality of parameters;

displaying the new values of the parameters on a region of the screen;

storing the new values in the first memory;

capturing from the video memory data representative of regions of the screen where the values of the entered parameters are graphically displayed;

verifying from said representative data if the values graphically displayed in said regions correspond to the values stored in said first memory for the same respective parameters.

27. Medical apparatus according to claim 1, wherein if said verification reveals identity between the value graphically represented in said region and the value entered in the first memory, the main unit is programmed to execute a step of displaying the value stored in the first memory on a zone of the screen distinct from said region.

28. Medical apparatus according to claim 2, wherein the main unit is programmed to execute a step of displaying the value stored in the second memory on a zone of the screen distinct from said region.

29. Method for setting up a medical apparatus comprising at least a user interface for enabling setting of a plurality of parameters pertinent to operation of said apparatus or pertinent to a treatment to be performed by said apparatus, the user interface including at least a screen for visualization of values of said parameters, a control system within said apparatus for controlling operation of said apparatus and responsive to actions by a user on said user interface,

said method comprising the following steps:

setting of a new value for a parameter;

displaying the new value of said parameter in a region of the screen;

storing the new value in a memory;

capturing data representative of the region of the screen where at least the value of the entered parameter is being graphically displayed;

verifying if the value graphically displayed in said region corresponds to the value stored in said first memory.

30. Method according to claim 29, comprising after said verification step a step of storing the value in a further memory of the control system if said verification reveals identity between the value graphically represented in said region and the value entered in the memory.

31-32. -32. (canceled)