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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.:

US 10828455 B1

PDFFull Text
Date of Patent:
Nov. 10, 2020

Filed:

Oct. 12, 2012

Medical tubes and methods of manufacture

Applicant:

Fisher & Paykel Healthcare Limited, Auckland, NZ;

Inventors:

Peter Kenneth Graham, Auckland, NZ;

Enrico Alvarez Garcia, Auckland, NZ;

David John Sims, Auckland, NZ;

Assignee:

Fisher & Paykel Healthcare Limited, Auckland, NZ;

Attorney:

Knobbe, Martens, Olson & Bear, LLP

Primary Examiner:

Samchuan C Yao

Assistant Examiner:

Ned T Heffner

Int. Cl.
CPC ...
A61M 16/08 (2006.01); A61M 16/10 (2006.01); A61M 16/16 (2006.01); A61M 39/08 (2006.01); A61M 16/00 (2006.01); A61M 16/06 (2006.01); A61M 13/00 (2006.01); B29L 23/00 (2006.01); B29L 31/00 (2006.01); B29C 48/30 (2019.01); B29C 48/151 (2019.01); B29C 48/09 (2019.01); B29C 48/00 (2019.01);
U.S. Cl.
CPC ...
A61M 16/0875 (2013.01); A61M 16/0003 (2014.02); A61M 16/021 (2017.08); A61M 16/06 (2013.01); A61M 16/109 (2014.02); A61M 16/1095 (2014.02); A61M 16/16 (2013.01); A61M 39/08 (2013.01); A61M 13/003 (2013.01); A61M 16/0841 (2014.02); A61M 16/1075 (2013.01); A61M 2205/0238 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3633 (2013.01); A61M 2205/75 (2013.01); A61M 2207/00 (2013.01); A61M 2207/10 (2013.01); A61M 2209/02 (2013.01); B29C 48/0016 (2019.02); B29C 48/09 (2019.02); B29C 48/151 (2019.02); B29C 48/30 (2019.02); B29C 48/303 (2019.02); B29L 2023/007 (2013.01); B29L 2031/7542 (2013.01);
Abstract

This invention relates to a medical tube comprises an elongate conduit having a first opening, a second opening, a longitudinal axis, a lumen extending between the first opening and the second opening along the longitudinal axis, and a corrugated wall, formed from an extruded material, extending between the first opening and the second opening and surrounding the lumen. The wall is stiffer in a first length of the conduit adjacent the first opening than in a second length of the conduit adjacent the second opening. The variable stiffness of the tube wall can improve the thermal profile of the tube as well as improve drain-back of condensation into a humidifier providing humidified gas to the tube.

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