Flow measuring device
AssigneeMergenet Medical, Inc.
InventorsCharles A. Lewis, Robert M. Landis, Sergei Shirokov, Sarjeet Patel, Rahul Dandu, Dharmen Patel
Life of this patent
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Abstract
A pneumotach for measuring respiratory gas flow is provided and includes a housing defining a lumen and having a longitudinal axis; and an airfoil diametrically supported within the lumen of the housing and extending at least partially thereacross, the airfoil defining a chord axis. The chord axis may be angled with respect to the longitudinal axis.
Claims27
A pneumotach for measuring flow, the pneumotach comprising:
- a housing defining a lumen and having a longitudinal axis;
- and,
- an airfoil diametrically supported within the lumen of the housing and extending at least partially there across, the airfoil defining a chord axis, wherein the chord axis is one of angled with respect to the longitudinal axis and aligned with respect to the longitudinal axis.
A method of monitoring and/or measuring a fluid flow pressure, comprising the steps of:
- providing a fluid pressure measuring system including a pneumotach, wherein the pneumotach includes:
- a housing defining a lumen and having a longitudinal axis;
- and
- an airfoil diametrically supported within the lumen of the tubular housing and extending at least partially thereacross, the airfoil defining a chord axis, wherein the chord axis is one of angled with respect to the longitudinal axis and aligned with respect to the longitudinal axis;
- flowing a fluid through the housing of the pneumotach, in at least one of a forward and a reverse direction;
- and
- measuring a pressure differential on a surface of the airfoil.
A system for measuring a fluid flow, the system comprising:
- a pneumotach including:
- a housing defining a lumen and having a longitudinal axis;
- and
- an airfoil diametrically supported within the lumen of the housing and extending at least partially thereacross, the airfoil defining a chord axis, wherein the chord axis is one of angled with respect to the longitudinal axis and aligned with respect to the longitudinal axis;
- and
- a pressure transducer, in fluid communication with the lumen of the housing, for measuring a pressure differential in the housing of the pneumotach.
A system for measuring a fluid flow, the system comprising:
- a pneumotach including:
- a housing defining a lumen and having a longitudinal axis;
- and
- a uni-directional airfoil diametrically supported within the lumen of the housing and extending at least partially thereacross, the airfoil defining a chord axis, wherein the chord axis is one of angled with respect to the longitudinal axis and aligned with respect to the longitudinal axis;
- and
- a pressure transducer, in fluid communication with the lumen of the housing, for measuring a pressure differential in, the housing of the pneumotach for bi-directional fluid flow across the airfoil.
Dependencies are inferred from the claim text.