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:
Aug. 17, 2004
Filed:
Mar. 04, 2003
Silvia Beatriz Dougill, London, GB;
Christian Juan Feldermann, Abberley, GB;
The BOC Group, plc, Windlesham, GB;
Abstract
A nasal cannula for use in administering a gas under pressure through a nasal passage of a user comprises at least one tubular nasal prong assembly. The assembly includes an inner tubular prong having a distal end to be placed in or adjacent the nasal passage and a proximal end for connection to a supply line for the gas, and also includes an outer sleeve extending over at least a portion of the inner tubular prong to define therewith an annular passage in communication with supply line . The arrangement is such that when gas flows through the supply line most will flow out of the distal end of the prong but some will pass through the annular passage to form a shrouding stream.