(19)

(11)

EP 4 823 968 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 23961125.4 (22) Date of filing: 14.12.2023

(51) International Patent Classification (IPC):  B67B 3/062(2006.01) A61L 2/20(2026.01) (52) Cooperative Patent Classification (CPC): A61L 2/06; A61L 2/186; A61L 2/22; A61L 2/18; B67B 3/0645; B67B 3/003 (86) International application number: PCT/CN2023/138624 (87) International publication number: WO 2025/123263 (19.06.2025 Gazette 2025/25)

(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 (71) Applicant: SIG Services AG 8212 Neuhausen am Rheinfall (CH)	(72) Inventors: CHEN, Lianfang Suzhou, Jiangsu 215126 (CN) ZÜRCHER, Remo Suzhou, Jiangsu 215014 (CN) FITZGERALD, Sean West Dundee, Illinois 60118 (US) (74) Representative: EP&C  P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)