Endoscope cleaning with viscoelastic liquid

US11998961B2 · kind B2 · utility

Assignee

• Saban Ventures PTY Limited · AU

Inventors

• Alexander Galkin · Chatswood, AU
• Stefan Gebhardt · Weidenberg, DE
• Ashwin Nair · Arlington, US
• Brian Hingley · Chatswood, AU
• Joshua Storm Caley · Chatswood, AU

Key dates

• Filing date: Oct 16, 2019
• Grant date: Jun 4, 2024
• Expiry date: Nov 26, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to compositions and methods for reducing biocontaminant (for example flesh, blood, mucous, faeces or biofilm) on a surface, such as an endoscope surface. The compositions are viscoelastic and of low lubricity, having 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 (preferably 0.06 or greater) in the viscoelastic liquid's elastohydrodynamic region.