Inhalation device

An inhalation device, comprising:

• a mouthpiece, which comprises a mouthpiece body and an inhalation channel formed in the mouthpiece body, wherein the bottom of the inhalation channel is of a tubular structure;
• a filter member, which comprises a sleeving portion sleeved on a bottom end of the inhalation channel and a mesh portion integrally formed with the sleeving portion to avoid that capsule fragments generated after a capsule is pierced enter the inhalation channel;
• a capsule chamber, which is located below the mouthpiece and comprises a deck and a compartment integrally formed on a lower side of the deck and configured to hold a capsule in a use state, wherein the deck is provided with a capsule insertion port which is in communication with the compartment and is correspondingly engaged with the mesh portion;
• a piercing assembly, which is arranged on one side of the capsule chamber and comprises a button member and piercing needles which are movably arranged on one side of the capsule chamber, wherein the button member, when stressed in a use state, moves relative to the capsule chamber to drive the piercing needles to pierce the capsule in the capsule chamber;
• a base, which comprises a base body for accommodating the compartment and part of the piercing assembly;
• and
• a cap body, which covers the mouthpiece when in a state of being snap-fitted on the base;
• wherein in a state in which the capsule is in the capsule chamber and the capsule is pierced, when a negative pressure is generated in the inhalation channel, pharmaceutical powder in the capsule enters the inhalation channel via the mesh portion through the capsule insertion port.