Topical negative pressure system with status indication

• US 8,294,586 B2
• Filed: 06/20/2008
• Issued: 10/23/2012
• Est. Priority Date: 07/02/2007
• Status: Active Grant

• Current Assignee: Smith & Nephew PLC
• Original Assignee: Smith & Nephew PLC
• Inventors: Pidgeon, Andrew Duncan, Mann, Richard, Middleton, Max William
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): Terrell, Emily C
• Application Number:
  US12/667,229
• Publication Number:
  US 20100207768A1
• Time in Patent Office: 1,586 Days
• Field of Search: None
• US Class Current: 340/573.1
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 1/984 portable on the body
• CPC Class Codes: A61M 2205/15 Detection of leaks
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/82 Internal energy supply devices
• CPC Class Codes: A61M 2209/088 on the body

Abstract

A method and apparatus are disclosed for indicating a status of at least one operating parameter associated with a topical negative pressure (TNP) system. The method includes the steps of generating illumination from at least one LED, the illumination having at least one characteristic corresponding to a status of at least one operating parameter associated with the TNP system and being visible to a user.

Claims

1. A method of indicating status of at least one operating parameter associated with a topical negative pressure (TNP) system, comprising the steps of:

generating a visual indicator as an illumination from an LED, the visual indicator having at least three characteristics corresponding to a status of at least one operating parameter associated with the TNP system, the at least three characteristics comprising;

a first characteristic comprising a first solid color for indicating a first status;

a second characteristic comprising a second solid color for indicating a second status, the second solid color different from the first solid color; and

a third characteristic comprising a flashing of the first color for indicating a third status,

wherein the indicated status comprises at least one of a normal operation, a failed operation and a non-urgent warning, and

wherein generating the visual indicator comprises generating the illumination from the LED located in a cavity region of a case of the TNP system via a light-pipe element directing the illumination to a viewing window element visible to a user on an outer surface of the case, the viewing window element comprising a prismed surface.

2. The method as claimed in claim 1, further comprising the steps of:

generating the illumination from the LED mounted at a visible surface of the case of the TNP system.

3. The method as claimed in claim 1, further comprising the steps of:

providing illumination having only two possible colors from the LED.

4. The method as claimed claim 1, further comprising the steps of:

providing illumination having only a solid or flashing state from the LED.

5. The method as claimed in claim 1, further comprising the steps of:

via an illuminated user display located on an outer surface of a case of the TNP system, providing light or graphic symbols indicating further status information associated with operation of the TNP system.

6. The method as claimed in claim 1, further comprising the steps of:

generating an audible noise from a buzzer unit corresponding to the status of at least one operating parameter associated with the TNP system.

13. The method according claim 1 wherein the at least one operating parameter comprises at least one of power, operating efficiency, battery life, number of doses left, and therapy status.

16. The method of claim 1, wherein the at least one operating parameter comprises therapy status and battery capacity and generating the visual indicator comprises generating the illumination corresponding to therapy status and battery capacity from a single LED.

7. An apparatus that indicates status of at least one operating parameter associated with a topical negative pressure (TNP) system, comprising:

an LED that generates an illumination visible to a user of a TNP system, the illumination having at least three characteristics corresponding to a status of at least one operating parameter associated with the TNP system, the at least three characteristics comprising;

a first characteristic comprising a first solid color for indicating a first status;

a second characteristic comprising a second solid color for indicating a second status, the second solid color different from the first solid color; and

a third characteristic comprising a flashing of the first color for indicating a third status,

wherein the indicated status comprises at least one of a normal operation, a failed operation and a non-urgent warning,

wherein the TNP system comprises;

a source of negative pressure configured to provide negative pressure to a wound dressing through a fluid flow path,

a case configured to enclose the source of negative pressure, and

a collection canister configured to be attached to the case, the collection canister configured to be placed in the fluid flow path between the source of negative pressure and the dressing,

a viewing window element disposed at a visible surface of the case, and

a light-pipe element configured to direct the illumination generated by the LED to the viewing window, and

wherein;

the LED is mounted in a cavity region in the case, and

the viewing window element comprises a prismed surface.

8. The apparatus as claimed in claim 7, wherein the LED is mounted at a visible surface of the case of the TNP system.

9. The apparatus as claimed in claim 7, wherein

the light-pipe element comprises a body formed from an at least partially transparent material, said body comprising a generally conical portion with a narrow end locatable proximate to the LED and a remainder end extending into a substantially cylindrical portion.

10. The apparatus as claimed in claim 9, wherein the narrow end of the body of the light-pipe element has at least one recessed end region to closely fit over a respective LED.

11. The apparatus as claimed in claim 9, further comprising:

a circular outer surface of the cylindrical portion of the light-pipe element body provides the viewing window.

12. The apparatus as claimed in claim 7, further comprising:

at least one buzzer unit that generates at least one noise audible to a user having at least one characteristic corresponding to the status of at least one operating parameter associated with the TNP system.

14. The apparatus according claim 7 wherein the at least one operating parameter comprises at least one of power, operating efficiency, battery life, number of doses left, and therapy status.

17. The apparatus of claim 7, wherein the at least one operating parameter comprises therapy status and battery capacity and the apparatus comprises a single LED configured to generate the illumination corresponding to therapy status and battery capacity.

15. A method for indicating a status of at least one operating parameter associated with a topical negative pressure (TNP) system comprising:

generating a visual indicator as an illumination from an LED, the visual indicator having at least two characteristics corresponding to a status of at least one operating parameter associated with the TNP system, the at least two characteristics comprising;

a first characteristic for indicating a first status comprising a first solid color; and

a second characteristic for indicating a second status comprising at least one of a second solid color different from the first solid color and a flashing of the first color,

wherein the indicated status comprises at least one of a normal operation, a failed operation and a non-urgent warning,

wherein generating the visual indicator comprises generating the illumination from the LED located in a cavity region of a case of the TNP system via a light-pipe element directing the illumination to a viewing window visible to a user, the viewing window comprising a prismed surface.

18. The method of claim 15, wherein the at least one operating parameter comprises therapy status and battery capacity and generating the visual indicator comprises generating the illumination corresponding to therapy status and battery capacity from a single LED.