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. 30, 2024
Filed:
Jun. 18, 2020
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Alicia Jerram Hunter Evans, Auckland, NZ;
Callum James Thomas Spence, Auckland, NZ;
Craig Karl White, Auckland, NZ;
Geraldine Keogh, Auckland, NZ;
Matthew Jon Payton, Auckland, NZ;
Laurence Gulliver, Auckland, NZ;
Milanjot Singh Assi, Auckland, NZ;
Samantha Dale Oldfield, Auckland, NZ;
Laith Adeeb Hermez, Auckland, NZ;
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Abstract
The present disclosure relates to determining a corrected exhaled gas measurement during high flow respiratory therapy. Measuring exhaled gas concentration during high flow respiratory therapy is difficult and inaccurate due to a phenomenon known as flushing. The high flows delivered to the patient flush the dead space in the conducting airways, which causes a dilution effect that results in underestimated or overestimated exhaled gas measurement depending on the gas composition delivered by the high flow system. This can lead to incorrect clinical measurements and diagnoses. Various algorithms are disclosed herein to account for the dilution effect caused by flushing, allowing for the method of measuring gas concentrations to still be used accurately for clinical measurements.