US 11,998,961 B2
Endoscope cleaning with viscoelastic liquid
Alexander Galkin, Lane Cove West (AU); Stefan Gebhardt, Lane Cove West (AU); Ashwin Gopalan Nair, Lane Cove West (AU); Brian Hingley, Lane Cove West (AU); and Joshua Storm Caley, Lane Cove West (AU)
Assigned to Saban Ventures Pty Limited, Macquarie Park (AU)
Appl. No. 17/285,897
Filed by SABAN VENTURES PTY LIMITED, Alexandria (AU)
PCT Filed Oct. 16, 2019, PCT No. PCT/AU2019/051124
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/077403, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018903910 (AU), filed on Oct. 16, 2018.
Prior Publication US 2021/0370362 A1, Dec. 2, 2021
Int. Cl. A61L 2/18 (2006.01); B08B 9/027 (2006.01); B08B 9/032 (2006.01); C11D 3/12 (2006.01); C11D 3/22 (2006.01); C11D 3/37 (2006.01); C11D 3/386 (2006.01)
CPC B08B 9/0326 (2013.01) [A61L 2/18 (2013.01); B08B 9/027 (2013.01); B08B 9/032 (2013.01); C11D 3/1213 (2013.01); C11D 3/124 (2013.01); C11D 3/222 (2013.01); C11D 3/3765 (2013.01); C11D 3/386 (2013.01); A61L 2202/17 (2013.01); A61L 2202/24 (2013.01); B08B 2209/032 (2013.01); C11D 2111/14 (2024.01)] 19 Claims
OG exemplary drawing
 
1. A method of reducing a biocontaminant on a surface contaminated therewith comprising contacting the surface with a viscoelastic liquid and flowing said viscoelastic liquid along said surface thereby to remove said biocontaminant from the surface, wherein the viscoelastic liquid has the following properties at 21° C.:
a rotational yield point between 140% strain and 300% strain;
a peak viscosity between 550 Pa·s and 2000 Pa·s;
an oscillatory flow point between 250 and 700% strain; and
a coefficient of friction μ which has a maximum value in the viscoelastic liquid's elastohydrodynamic region.