Abstract: A flow-sensing arrangement within a spirometer. The arrangement includes a tubular-member for allowing an air-passage along a longitudinal-axis thereof. At-least two disc-shaped air-resistive elements are removably-arranged within the tubular member to resist the air-flow. Each of the resistive-elements include perforations for allowing the air-passage through the resistive-element. At-least two ports extend radially outward through a wall of the tubular member, such that each of the two ports are located within the tubular-member near the resistive-elements to cause determination of at least a pressure-difference there-between.

Abstract: A flow-sensing arrangement within a spirometer. The arrangement includes a tubular-member for allowing an air-passage along a longitudinal-axis thereof. At-least two disc-shaped air-resistive elements are removably-arranged within the tubular member to resist the air-flow. Each of the resistive-elements include perforations for allowing the air-passage through the resistive-element. At-least two ports extend radially outward through a wall of the tubular member, such that each of the two ports are located within the tubular-member near the resistive-elements to cause determination of at least a pressure-difference there-between.

Abstract: A breath-actuated inhaler includes a motion-generator configured to render motion upon actuation by a user. An arrangement transforms the generated motion to enable a canister at undergoing translation-motion. A metering-valve is operably connected to the canister to cause a metered-release of the canister's contents as a spray, based upon the translation-motion.

Abstract: The invention relates to an inhaler spacer (1) comprising an inlet (2) for connection to an inhaler and an outlet (4) through which a user can inhale. The inhaler spacer (1) comprises a duct (6) extending between the inlet (2) and the outlet (4). The duct (6) is defined by a wall (8) which extends around a first axis (10) and comprises a diffuser portion (12) extending along the first axis away from the inlet. The wall (8) of the duct (6) in at least apart of the diffuser portion curves outwardly away from the first axis with increasing distance away from the inlet such that the cross sectional area of the diffuser portion perpendicular to the first axis increases with increased distance from the inlet along the first axis.

Abstract: The present invention relates to a device for measuring respiratory parameters of a patient. In one embodiment, the device 100 comprises a flow tube 101 and a body 102. The flow tube 101 is a hollow tube comprising: a first end 103, a second end 104 and at least one tube portion 105 (represented by dotted lines) wherein the tube portion is having a geometric construction capable of altering the rate/direction of air flow passing through the flow tube, thereby introducing a differential pressure between the first end 103 and the second end 104.