Pneumatic expansion-based soft nasal swab, sampling device, and sampling method

An automatic sampling device, comprises:

• a nasal swab of cavity shaped;
• and
• a pressurizing device for expanding the nasal swab and providing a driving force to the nasal swab for automatic sampling through air inflation,
• wherein the nasal swab comprises:
• a sampling segment, configured to collect samples in a nasal cavity of a subject to be sampled;
• a driving segment connected to the pressurizing device via a pipe, which can adjust a degree of the air inflation;
• a support segment attached to the driving segment, which is configured to transmit the driving force from the driving segment to the sampling segment in an axial direction, and provide support for the sampling segment during sampling;
• and
• a telescopic segment, with two ends respectively attached to the support segment and the sampling segment, which is configured to extend towards the sampling segment along the axial direction under an action of the driving force to insert the sampling segment into a sampling position in the nasal cavity of the subject, and configured to contract towards the support segment along the axial direction, when the sampling segment suffers from a resistance at the sampling position and applies a pressure force on the telescopic segment, and drive the sampling segment to rotate for automatic sampling.