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:
Jul. 28, 2026
Filed:
Jan. 24, 2019
Applicant:
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Inventors:
Matthew Liam Buswell, Auckland, NZ;
Gavin Walsh Millar, Auckland, NZ;
James William Stanton, Auckland, NZ;
Assignee:
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 16/08 (2006.01); A61M 16/10 (2006.01); A61M 16/16 (2006.01);
U.S. Cl.
CPC ...
A61M 16/0875 (2013.01); A61M 16/0883 (2014.02); A61M 16/1095 (2014.02); A61M 16/0808 (2013.01); A61M 16/0833 (2014.02); A61M 16/109 (2014.02); A61M 16/16 (2013.01); A61M 2205/7536 (2013.01); A61M 2240/00 (2013.01);
Abstract
A breathing circuit for use in respiratory therapy includes an inspiratory tube and an expiratory tube. The inspiratory tube of the breathing circuit has a smooth bore. The expiratory tube of the breathing circuit is corrugated. Preferably, the expiratory tube is vapor permeable. Using the combination of a smooth bore inspiratory tube with a corrugated expiratory tube has the unexpected result of improving the performance of the breathing circuit and its components.