US 11,771,874 B2
Functionalized balloon surface
Bodo Quint, Dettighofen (DE); and Jeremy Wernli, Wettingen (CH)
Assigned to BIOTRONIK AG, Buelach (CH)
Appl. No. 17/619,660
Filed by BIOTRONIK AG, Bülach (CH)
PCT Filed Jun. 23, 2020, PCT No. PCT/EP2020/067463
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2021/001209, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 19183858 (EP), filed on Jul. 2, 2019.
Prior Publication US 2022/0305240 A1, Sep. 29, 2022
Int. Cl. A61M 25/10 (2013.01); D01D 5/00 (2006.01)
CPC A61M 25/1029 (2013.01) [D01D 5/003 (2013.01); A61M 2025/105 (2013.01); A61M 2025/1031 (2013.01); A61M 2025/1075 (2013.01); D10B 2509/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for producing a balloon for a balloon catheter, comprising the following steps:
providing the balloon, wherein the balloon has an outer surface;
providing a solution comprising a solvent and a polymer dissolved in the solution; and
depositing the polymer onto the surface from the solution to form a surface coating of the polymer on the surface of the balloon, wherein the solvent and polymer are selected such that fibrous particles are deposited on the surface in gel-like form, and the particles undergo a loss of volume due to the drying after application and due to suctioning or solvent-withdrawing action of the balloon surface.