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Tidal dry powder inhaler with miniature pressure sensor activation

A pressure sensor, dry powder inhaler technology, applied in inhalers, respirators, drug devices, etc., can solve the problems of lack of sensitivity and linear response of sensors.

Inactive Publication Date: 2017-05-17
MICRODOSE THERAPEUTX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such, when pressure is first applied, the sensor may not provide a linear response or may not exhibit optimum sensitivity until such pressure is removed

Method used

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  • Tidal dry powder inhaler with miniature pressure sensor activation
  • Tidal dry powder inhaler with miniature pressure sensor activation
  • Tidal dry powder inhaler with miniature pressure sensor activation

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Embodiment Construction

[0072] Elements shown in the drawings are not drawn to scale and are used to illustrate operation only. Like elements are denoted by like reference numerals.

[0073] In addition to different (two port) types of pressure sensors and single port gauge sensors, with separate measurements made before and after use, as discussed above, absolute or barometric pressure sensors are available. The air pressure sensor is referenced to vacuum. Sometimes they are called altimeters because altitude is obtained from barometric pressure readings. This type of sensor has not been considered for breath detection due to their extremely wide range (20 to 110 kPa) and extremely low resolution. Considering how a typical respiration curve generates a pressure change of approximately only 0.2 kPa, this requires operating the sensor over an extremely narrow portion of its operating range. However, with miniaturization, including the introduction of MEMS and NEMS technologies, vastly improved sens...

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PUM

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Abstract

A tidal dry powder inhaler comprising : a miniature pressure sensor, a sensor port of said sensor being pneumatically coupled to a flow channel through which a user can inhale; a processor configured to process data received from a sensing element of the sensor to make a determination that inhalation of a spontaneous breath through said flow channel is in progress; a controller configured to, responsive to said determination, issue a start dosing signal; and a dosing mechanism configured to release dry powder medicament into the flow channel during inhalation of said spontaneous breath in response to receiving said signal.

Description

[0001] This application claims priority to U.S. Application Serial No. 62 / 043,126 (Title of Invention: Tidal Dry Powder Inhaler with Miniature Pressure Sensor Activation, filed August 28, 2014), the contents of which are hereby incorporated by reference in their entirety . technical field [0002] The present disclosure relates generally to inhalers, eg, for drug administration. More specifically, this disclosure relates to miniature pressure sensors for inhalation detection in tidal dry powder inhalers. Background technique [0003] Inhalation and / or exhalation detection is often required in the diagnosis and treatment of pulmonary conditions, where such devices such as maximal flow meters and spirometers are often employed. [0004] A spirometer is an instrument used to measure the volume of air inhaled and exhaled by a patient's lungs. A spirometer measures ventilation, the movement of air into and out of the lungs. From the trace output by the spirometer, known as a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/08
CPCA61B5/08A61M15/0091A61M2016/0036A61M2202/064A61M2205/50A61M15/0065A61M2205/3331
Inventor 马克·史蒂芬·摩里森道格拉斯·E·威佐
Owner MICRODOSE THERAPEUTX INC