Device and method for producing therapeutic foam

US8517975B2 · kind B2 · utility

Assignee

• BTG INTERNATIONAL INC. · GB

Inventors

• David D. Wright · Paragon Road, GB
• Anthony David Harman · London, GB
• Garry Hodges · Stockton, GB
• David John Targell · Scotland, GB
• Mark Simpson Yeoman · Heathfield, GB
• Jeremy Francis Donnan · Balerno, GB

Key dates

• Filing date: Jul 9, 2012
• Grant date: Aug 27, 2013
• Expiry date: Jul 9, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K9/122
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A device and a method for generating therapeutic foam from a sclerosing solution such as polidocanol and a gas which is absorbable or dissolvable in the body comprises a disposable cassette including a liquid container and a flexible chamber containing gas, chamber being formed as a loop. Located in the loop chamber is a foam generating mesh. In use, liquid is introduced into the chamber and then the cassette is inserted into a pumping machine where it is engaged by a peristaltic pump which circulates the contents of the loop chamber through the mesh, thus creating foam. When a steady state is reached, foam may be withdrawn using a syringe via either a port or septum.