US 2026/0090726 A1 · PORTABLE SPIROMETER

Abstract

The disclosure relates to a spirometer comprising a MEMS-based thermal fluid flow sensor for generating a signal in response to a fluid flow generated during inhalation or exhalation; and a microcontroller for calculating the fluid flow from the signal generated by the flow sensor. The spirometer may be connected to other devices, such as a smartphone or a personal computer or any other computing unit which is adapted to collect, store, analyse, exchange and/or display data. The disclosure further describes the use of the spirometer in measuring a user's lung performance and/or monitoring it over time. Furthermore, the spirometer may be provided in a system together with an air quality measurement device for determining the air quality at a location of interest; and a computing unit for collecting, analysing and correlating the user's lung performance data obtained from the spirometer with the air quality data.

Claims24

Dependent claims

A portable electronic spirometer (1) comprising:

(a) a tubular mouthpiece (2) with
a proximal opening (3) for insertion into the mouth of a user,
a distal opening (4),
a main fluid channel (5) extending between the proximal opening (3) and the distal opening (4),
a first lateral opening (6),
a second lateral opening (7) positioned at a longitudinal distance to the first lateral opening (6), and
a flow restrictor (8) positioned in the main fluid channel (5) between the first and the second lateral opening (6 and 7);
and
(b) a main body (9) with
a first fluid opening (10) connectible with the first lateral opening (6) of the mouthpiece (2),
a second fluid opening (11) connectible with the second lateral opening (7) of the mouthpiece (2),
a bypass fluid channel (12) extending between the first and the second fluid opening (10 and 11),
a MEMS-based thermal fluid flow sensor (13) positioned at the bypass fluid channel (12) for generating a signal in response to the fluid flow in the bypass fluid channel (12), and
a microcontroller (14) connected with the fluid flow sensor (13) for calculating the fluid flow from the signal generated by the flow sensor (13).

11 more elements

Dependencies are inferred from the claim text.

Portable spirometer

Life of this patent

Portable spirometer

Life of this patent

Abstract

Claims24