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Device and method for determining an aerosol delivery

A technology of aerosol and aerosol particles, which is applied in the direction of measuring devices, medical equipment, nebulizers for treatment, etc., and can solve problems such as destruction and particle modification

Pending Publication Date: 2021-03-19
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In addition, known methods and devices for determining the uptake of liquids (in particular water or aqueous solutions) by particles or the adsorption of liquids on the surface of particles require chemical analysis of samples containing the particles in order to modify the particles and ultimately their destroy

Method used

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  • Device and method for determining an aerosol delivery
  • Device and method for determining an aerosol delivery
  • Device and method for determining an aerosol delivery

Examples

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Embodiment Construction

[0085] Figures 1A and 1B schematically illustrate an aerosol flow 112, in particular a dry aerosol flow 112 or a wet aerosol flow 112 comprising absorbed liquid and / or absorbed liquid, for measuring an aerosol flow 112 produced by an aerosol generator 114. Two preferred embodiments of the device 110 for aerosol delivery. As shown in FIGS. 1A and 1B , the device 110 includes a collection unit 116, wherein the collection unit 116 has a filter 118 configured to collect aerosol particles 120 carried by the aerosol flow, which can be connected to the first aerosol generator. A fluid connection point 122, and a second fluid connection point 124 connectable to a breathing simulator 126, such as a sinusoidal pump 128, configured to simulate tidal breathing.

[0086] Further, the device 110 comprises a measurement volume 130 which may preferably be located downstream of the aerosol flow 112 in a region 132 where a patient interface may be placed. In this context, the measurement volum...

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Abstract

The present invention relates to a device (110) and a method for determining an aerosol delivery (210) of an aerosol stream (112), and a method for determining an absorption and / or adsorption of a liquid on aerosol particles (220). The device (110) comprises a collecting unit (116) having a filter (118) designated for collecting aerosol particles (120) carried by an aerosol stream (112), a first fluid connection point (122) which is connectable to an aerosol generator (114), and a second fluid connection point (124) which is connectable to a breathing simulator (126) being designated for simulating tidal breathing; at least one measurement volume (130) designed for an interaction of at least one light beam with the aerosol particles (120) carried by the aerosol stream (112) and passing through the measurement volume (130); at least one optical measurement unit (136) designed for generating at least one optical measurement signal depending on the interaction of the at least one light beam with the aerosol particles (120) passing the measurement volume (130); and at least one evaluation unit (140) designed for determining the aerosol delivery (210) of the aerosol stream (112) from the at least one optical measurement signal.

Description

technical field [0001] The present invention relates to a device and a method for determining the aerosol delivery of an aerosol flow, in particular a dry aerosol flow or a wet aerosol flow comprising absorbed liquid and / or absorbed liquid, and a method for determining the presence of a liquid in an aerosol. Methods of absorption and / or adsorption on sol particles. Background technique [0002] Lung or respiratory diseases, including but not limited to asthma or chronic obstructive pulmonary disease (COPD), are usually treated by inhalation of a drug delivered as an aerosol stream of liquid or solid particles. Here, the particles generated by using the aerosol generator preferably exhibit a size respirable by alveoli and lungs. In this regard, devices and methods for determining the aerosol delivery of an aerosol flow provided by an aerosol generator, in particular a dry aerosol flow or a wet aerosol flow comprising absorbed liquid and / or absorbed liquid, are used Test par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06A61M11/00
CPCG01N15/0606A61M11/00A61M15/00A61M16/00A61M2205/3306A61M2205/3327A61M2205/7536A61M2209/02G01N15/0625G01N15/0205A61M15/0068A61M15/0086A61M15/002G01N2015/0693A61M2205/3334A61M2205/70A61M15/0001A61M11/041A61M2205/3379A61M2205/75
Inventor F·维甘特G·波尔曼
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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