continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6456/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :23/07/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "A LEAK SENSOR"
(51) International classification :A61F 13/00 (71)Name of Applicant :
(31) Priority Document No :PA200600289 1)COLOPLAST A/S,
(32) Priority Date :28/02/2006
Address of Applicant :HOLTEDAM 1, DK-3050
(33) Name of priority country :Denmark
HUMLEBAEK, DENMARK, Denmark
(86) International Application No :PCT/DK2007/000096 (72)Name of Inventor :
Filing Date
:20/02/2007
1)CARSTEN THIRSTRUP,
(87) International Publication No :WO 2007/098762 2)DANIEL NILSSON,
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
3)HENRIK PRANOV
4)LARS LADING
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
The present invention relates to a method and dressing for detecting detachment of the dressing, which is applied to a surface of an at
least partly electrically conductive object. The dressing comprises an adhesive for attaching the dressing to the electrically conductive
object and at least two electrodes arranged in a distance from the electrically conductive object. A voltage is applied to the first and
second electrode establishing an electrical circuit comprising a first capacitor between the first electrode and the electrically
conductive object and a second capacitor between the second electrode and the electrically conductive object. Changes of the
capacitance between at least one of the first and the second electrode and the electrically conductive object are detected, and an alarm
is activated when the changes of the capacitance reach a predetermined value. This advantageously provides a method whereby a leak
can be detected quickly. Furthermore, this advantageously provides a leak sensor with no direct physical or mechanical contact
between the electrically conductive object, e.g. the skin, and the electrodes. This provides for a dressing comprising a leak sensor
without compromising the comfort of the user.
No. of Pages : 64 No. of Claims : 31
The Patent Office Journal 24/10/2008 25961