Method of controlling medical fluid therapy machine brightness

• US 9,799,274 B2
• Filed: 09/29/2014
• Issued: 10/24/2017
• Est. Priority Date: 02/15/2007
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Alberti, James J., Gilbert, Rick, Hopping, Pete, Bedingfield, John
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): Hall, Deanna K
• Application Number:
  US14/500,049
• Publication Number:
  US 20150014249A1
• Time in Patent Office: 1,121 Days
• CPC Class Codes: A61M 1/152 Details related to the interface between cassette and machine
• CPC Class Codes: A61M 1/153 the cassette being adapted for heating or cooling the treating fluid, e.g. the dialysate or the treating gas
• CPC Class Codes: A61M 1/159 specially adapted for peritoneal dialysis
• CPC Class Codes: A61M 1/1621 Constructional aspects thereof semi-permeable membranes for separation processes characterised by their properties B01D69/00; semi permeable membranes characterised by their material B01D71/00
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/284 Continuous flow peritoneal dialysis [CFPD]
• CPC Class Codes: A61M 1/288 Priming priming in extracorporeal blood circuits A61M1/3643
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/33 Controlling, regulating or measuring
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/587 Lighting arrangements
• CPC Class Codes: A61M 2205/6063 Optical identification systems
• CPC Class Codes: A61M 2205/6081 Colour codes
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336

Abstract

A method of controlling a medical fluid therapy machine display brightness includes: performing a medical fluid therapy using the medical fluid therapy machine, the medical fluid therapy machine including a display; sensing an amount of ambient light impinging the display without receiving light directly from the display; controlling a level of backlight brightness for the display based on the amount of ambient light sensed; and displaying information relating to the medical fluid therapy on the display using the controlled level of backlight brightness.

Claims

1. A method of controlling a medical fluid therapy machine display brightness comprising:

performing a medical fluid therapy using the medical fluid therapy machine, the medical fluid therapy machine including a display and a border around the display, the border including at least one keypad button configured to be illuminated;

sensing an amount of ambient light impinging an ambient light sensor that is positioned to face the same direction as the display and is offset from the display and the at least one keypad button within the border such that light is not directly received from the display or the at least one keypad button;

controlling a level of backlight brightness for the display based on the amount of ambient light sensed; and

displaying information relating to the medical fluid therapy on the display using the controlled level of backlight brightness.

2. The method of claim 1, wherein sensing the amount of ambient light approximates a spectral response of a human eye.

3. The method of claim 1, which includes at least one of:

(i) increasing the level of backlight brightness for the display when the amount of ambient light increases and (ii) decreasing the level of backlight brightness for the display when the amount of ambient light decreases.

4. The method of claim 1, wherein the medical fluid therapy machine is a peritoneal dialysis or hemodialysis machine.

5. The method of claim 1, wherein the ambient light sensor is located in at least substantially the same plane as the display so that light from the display is not sensed.

6. The method of claim 1, wherein the at least one keypad button is located between the ambient light sensor and the display so that light from the at least one keypad button is not sensed.

7. The method of claim 1, which includes enabling a user of the medical fluid therapy machine to override the controlled level of backlight brightness.

8. The method of claim 1, which includes enabling a user of the medical fluid therapy machine to manually set an initial level of backlight brightness prior to the sensing and controlling steps of claim 1.

9. The method of claim 1, which includes decreasing the level of backlight brightness over time when a particular steady amount of ambient light is sensed.

10. A method of controlling a medical fluid therapy machine brightness comprising:

performing a medical fluid therapy using the medical fluid therapy machine, the medical fluid therapy machine including a display and a keypad having a plurality of illuminable buttons;

sensing an amount of ambient light impinging an ambient light sensor that is located in substantially the same plane as the display, wherein at least one of the plurality of buttons is located between the display and the ambient light sensor, such that light is not directly received from the display or the plurality of keypad buttons; and

controlling a level of backlight brightness for at least one of;

(i) the display or (ii) at least one of the buttons based on the amount of ambient light.

11. A method of controlling a medical fluid therapy machine display brightness comprising:

performing a medical fluid therapy using the medical fluid therapy machine, the medical fluid therapy machine including a display;

sensing an amount of ambient light impinging the display using an ambient light sensor, while preventing light from the display from being sensed by locating at least one keypad button between the display and the ambient light sensor;

controlling a level of backlight brightness for the display based on the amount of ambient light sensed; and

displaying information relating to the medical fluid therapy on the display using the controlled level of backlight brightness.

12. The method of claim 11, wherein preventing includes locating the ambient light sensor in at least substantially the same plane as the display.

13. The method of claim 11, wherein preventing includes locating the ambient light sensor so as to face the same direction as the display.