(19)

(11)

EP 3 993 735 A1

(12)

(43) Date of publication: 11.05.2022 Bulletin 2022/19 (21) Application number: 20743895.3 (22) Date of filing: 18.06.2020

(51) International Patent Classification (IPC):  A61F 2/24(2006.01) (52) Cooperative Patent Classification (CPC): A61F 2/2415; A61F 2/2418; A61F 2210/0076; A61F 2230/0054; A61F 2240/001; A61F 2220/0025; A61F 2220/0033; A61F 2250/0036; A61F 2/2433; A61F 2250/0026; A61F 2250/0017; A61F 2230/0058; A61F 2230/006; A61F 2/92 (86) International application number: PCT/PL2020/000057 (87) International publication number: WO 2021/002766 (07.01.2021 Gazette 2021/01)

(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: 01.07.2019 PL 43046319 (71) Applicant: Balton Sp. z o.o. 00-496 Warszawa (PL)	(72) Inventors: PLOWIECKI, Emil 00-496 Warszawa (PL) HURKALA, Leszek 00-496 Warszawa (PL) GWIAZDOWSKA-NOWOTKA, Beata 00-496 Warszawa (PL) (74) Representative: Orlinska, Dorota Irena  Sobajda & Orlinska Kancelaria Patentowa sp. j. Ul. Dworkowa 2/67 00-784 Warszawa 00-784 Warszawa (PL)