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(11)

EP 4 157 482 A2

(12)

(88) Date of publication A3: 17.02.2022 (43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 21742170.0 (22) Date of filing: 28.05.2021

(51) International Patent Classification (IPC):  B01D 39/16(2006.01) A61L 2/04(2006.01) A41D 13/11(2006.01) (52) Cooperative Patent Classification (CPC): B01D 2239/0241; B01D 2239/065; B01D 2239/0442; B01D 2239/025; B01D 39/1623; A61L 2/04 (86) International application number: PCT/IB2021/054677 (87) International publication number: WO 2021/240450 (02.12.2021 Gazette 2021/48)

(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 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: 28.05.2020 CZ 202003050 U (71) Applicant: Ceske vysoke uceni technicke v Praze 160 00 Praha 6 - Dejvice (CZ)	(72) Inventors: VOJTECH, Lukas 54907 Nahorany (CZ) NERUDA, Marek 50009 Hradec Kralove (CZ) HNYK, Pavel 10800 Praha 10, Malesice (CZ) VODRAZKA, Jiri 18100 Praha 8, Bohnice (CZ) (74) Representative: Kratochvil, Vaclav  Patent and Trademark Office P.O. Box 26 295 01 Mnichovo Hradiste 295 01 Mnichovo Hradiste (CZ)