(19)

(11)

EP 4 572 656 A1

(12)

(43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 23738836.8 (22) Date of filing: 13.06.2023

(51) International Patent Classification (IPC):  A61B 5/00(2006.01) A61B 5/1455(2006.01) A61B 5/1464(2006.01) A61B 5/0205(2006.01) A61B 5/1459(2006.01) (52) Cooperative Patent Classification (CPC): A61B 2560/0462; A61B 5/6803; A61B 5/0205; A61B 2560/045; A61B 5/443; A61B 5/14551; A61B 5/1464; A61B 5/1459; A61B 5/14555; A61B 5/6814; A61B 5/6844 (86) International application number: PCT/GB2023/051543 (87) International publication number: WO 2024/013464 (18.01.2024 Gazette 2024/03)

(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: 11.07.2022 GB 202210188 22.03.2023 GB 202304207 (71) Applicant: Earswitch Ltd Bristol BS34 8RB (GB)	(72) Inventor: GOMPERTZ, Nicholas Bristol BS34 8RB (GB) (74) Representative: Chambers, Neil Edward  Burrows Chambers Associates Busines Centre West Avenue One Business Park Letchworth Garden City, Herts SG6 2HB Letchworth Garden City, Herts SG6 2HB (GB)