(19)

(11)

EP 3 993 879 A1

(12)

(43) Date of publication: 11.05.2022 Bulletin 2022/19 (21) Application number: 20734881.4 (22) Date of filing: 22.06.2020

(51) International Patent Classification (IPC):  A62B 18/00(2006.01) (52) Cooperative Patent Classification (CPC): A62B 18/08; A62B 23/025 (86) International application number: PCT/EP2020/067283 (87) International publication number: WO 2021/004766 (14.01.2021 Gazette 2021/02)

(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: 05.07.2019 WO PCT/CN2019/094918 13.09.2019 EP 19197180 (71) Applicant: Koninklijke Philips N.V. 5656 AG Eindhoven (NL)	(72) Inventors: SU, Wei 5656 AE Eindhoven (NL) KELLY, Declan, Patrick 5656 AE Eindhoven (NL) ZHANG, Xuan 5656 AE Eindhoven (NL) CHEN, Weizhong 5656 AE Eindhoven (NL) SHI, Jun 5656 AE Eindhoven (NL) (74) Representative: Philips Intellectual Property & Standards  High Tech Campus 52 5656 AG Eindhoven 5656 AG Eindhoven (NL)