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:
Oct. 04, 2022
Filed:
Jun. 21, 2017
Maquet Critical Care Ab, Solna, SE;
Magnus Hallbäck, Danderyd, SE;
MAQUET CRITICAL CARE AB, Solna, SE;
Abstract
A medical device measures a pressure of a pressurized breathing gas and includes a pressure sensor arranged at a point of measurement and measures the pressure of a sample gas at a sampling point. The sampling point and the point of measurement are connected by a pressure sampling tube in which a pressure wave of the sample gas can propagate from the sampling point to the point of measurement. The tube has a sampling tube volume and an acoustic impedance. The device further includes a damping arrangement fluidly communicating with the tube. The damping arrangement includes a flow restrictor and a receptor chamber arrangement. The receptor arrangement includes a receptor chamber which receives the pressure wave. The restrictor correlates to the acoustic impedance to prevent acoustic resonance in the tube. The receptor chamber correlates at least to the tube volume to prevent acoustic resonance in the tube.