The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
Sep. 09, 2010
Anthony David Harman, Oxon, GB;
David Dakin Iowerth Wright, High Waycombe, GB;
Jam Wilem Marinus Mijers, Haarlem, NL;
Stuart Brian William Kay, Cambridge, GB;
Christopher John Hurlstone, Cambridge, GB;
Julina Richard Dixon, Cambridge, GB;
Andrew Gordon Pocock, Cambridge, GB;
Brendan Hogan, Co Galway, IE;
Anthony David Harman, Oxon, GB;
David Dakin Iowerth Wright, High Waycombe, GB;
Jam Wilem Marinus Mijers, Haarlem, NL;
Stuart Brian William Kay, Cambridge, GB;
Christopher John Hurlstone, Cambridge, GB;
Julina Richard Dixon, Cambridge, GB;
Andrew Gordon Pocock, Cambridge, GB;
Brendan Hogan, Co Galway, IE;
BTG International Limited, London, GB;
Abstract
A foam transfer device is described, for use with aerosol canister apparatus for producing a sclerosant foam for the treatment of, inter alia, varicose veins. The device enables diversion of an initial quantity of below-specification foam from the canister to waste, e.g. to an integral waste chamber, before dispensing a further quantity of foam for use in treatment. The switching of the flow from the waste chamber to a different outlet for use is accomplished without interrupting the flow from the aerosol canister since this would cause the foam to drop below specification again. The waste chamber may be transparent so that the foam entering it can be observed and a decision made by a user when to stop diverting foam to waste. Alternatively, the foam may be diverted automatically e.g. when a set time has elapsed or a set volume of foam dispensed. The foam for use is normally dispensed into a syringe for subsequent injection into a varicose vein of a patient.