| 摘要 |
Particle entrapment device for the capture of particles in an inhaled, or an exhaled air stream, including a body having a portion adapted to fit within the mouth or at least one nostril of a human, or other mammalian animal, in sealing engagement with the edges of that orifice, and a passage through the body to allow air to be inhaled by, or to be exhaled by the animal through the particle entrapment device. The passage has a non-linear path and includes a collector means so placed in the passage that, during inhalation, air is drawn firstly towards and then secondly around the collector to that particulate matter in the air inhaled by the animal will be caused to impact against the collector due to the non-linearity of the passage and to be retained on the collector such that the particulate matter retained on the collector is prevented from entering the airways of the animal. The collector is removable from the particle entrapment device to allow analysis of the particles impacted thereon.
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