(19)

(11)

EP 4 315 302 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22717733.4 (22) Date of filing: 18.03.2022

(51) International Patent Classification (IPC):  G09B 23/28(2006.01) (52) Cooperative Patent Classification (CPC): G09B 23/288; G09B 23/32 (86) International application number: PCT/EP2022/057217 (87) International publication number: WO 2022/200228 (29.09.2022 Gazette 2022/39)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.03.2021 EP 21164979 21.05.2021 DK PA202170260 (71) Applicant: Ambu A/S 2750 Ballerup (DK)	(72) Inventors: SACHS, Fabian 2750 Ballerup (DK) MCGUINESS, Neil, Robert 2750 Ballerup (DK) (74) Representative: COPA Copenhagen Patents  Rosenørns Allé 1, 2nd floor 1970 Frederiksberg C 1970 Frederiksberg C (DK)