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EP 4 770 690 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24768656.1 (22) Date of filing: 28.08.2024

(51) International Patent Classification (IPC):  A61L 27/22(2006.01) A61L 31/04(2006.01) A61L 27/50(2006.01) A61L 31/18(2006.01) (52) Cooperative Patent Classification (CPC): A61L 27/50; A61L 27/22; A61L 31/043; A61L 31/18 (86) International application number: PCT/GB2024/052234 (87) International publication number: WO 2025/046227 (06.03.2025 Gazette 2025/10)

(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: GE KH MA MD TN (30) Priority: 29.08.2023 GB 202313072 (71) Applicant: UCL Business Ltd London Greater London WC1E 6BT (GB)	(72) Inventor: PATRICK, Peter Stephen London Greater London W1T 4TJ (GB) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)