(19)

(11)

EP 4 531 752 A1

(12)

(43) Date of publication: 09.04.2025 Bulletin 2025/15 (21) Application number: 23812252.7 (22) Date of filing: 25.05.2023

(51) International Patent Classification (IPC):  A61C 5/90(2017.01) A61M 16/04(2006.01) (52) Cooperative Patent Classification (CPC): A61B 90/16 (86) International application number: PCT/SE2023/050511 (87) International publication number: WO 2023/229516 (30.11.2023 Gazette 2023/48)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 25.05.2022 SE 2250617 (71) Applicant: Kar-In-Vent AB 217 58 Malmö (SE)	(72) Inventor: MAGNUSSON, Karin 217 58 Malmö (SE) (74) Representative: Bergenstråhle & Partners AB  P.O. Box 17704 118 93 Stockholm 118 93 Stockholm (SE)