US 12,303,620 B2
Hydrophilic coatings for medical devices
David J. Farrell, Ballina (IE)
Assigned to Hollister Incorporated, Libertyville, IL (US)
Appl. No. 17/287,804
Filed by HOLLISTER INCORPORATED, Libertyville, IL (US)
PCT Filed Oct. 11, 2019, PCT No. PCT/US2019/055822
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/086302, PCT Pub. Date Apr. 30, 2020.
Claims priority of provisional application 62/750,314, filed on Oct. 25, 2018.
Prior Publication US 2021/0316045 A1, Oct. 14, 2021
Int. Cl. A61L 29/08 (2006.01); A61L 29/00 (2006.01); A61L 29/04 (2006.01); A61L 29/16 (2006.01); C08L 39/06 (2006.01)
CPC A61L 29/085 (2013.01) [A61L 29/005 (2013.01); A61L 29/041 (2013.01); A61L 29/16 (2013.01); C08L 39/06 (2013.01); A61L 2300/428 (2013.01); A61L 2400/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A urinary catheter, comprising:
a hydrophilic coating disposed on an outer surface of the urinary catheter wherein the hydrophilic coating includes tocopherol in an amount greater than 3.5 weight percent of the hydrophilic coating; and
the hydrophilic coating having a first visual appearance when in a non-hydrated state and transitioning to a second visual appearance when in a hydrated state.