Patent ID: 11931506
Assignee: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. Dry powder inhaler, comprising:
capsule chambers (1), which are cylindrical chambers for holding capsules upright, tops of the capsule chambers (1) are open, and bottoms of the capsule chambers (1) are provided with intake ducts ventilating with outside air;
actuators (2), comprising puncture needles (21), mounted for a user to operate to move toward a side wall of each of the capsule chambers (1) to puncture the capsules;
nozzle (3), comprising an outlet duct (11) under the nozzle (3);
wherein, a number of the capsule chambers (1) is two, and all the capsule chambers (1) are arranged in parallel to form an integral multi-capsule chamber, the actuators (2) are mounted individually or in common among the capsule chambers (1), and the actuators (2) are mounted with needles (21) in a width direction of the actuators (2), a screen cover (15) is mounted at a bottom of the outlet duct (11) under the nozzle (3), and a screen (12) is fixed in the screen cover (15) and separately connected to the top of the multi-capsule chamber, making the screen (12) cover the tops of all of the capsule chambers (1),
wherein each capsule chamber (1) is provided at the side wall of the capsule chamber (1) with at least one deflected intake duct group, the deflected intake duct group comprises at least two deflected intake ducts (13) which are arranged around a central axis of the capsule chamber (1), and simultaneously deflect clockwise or counterclockwise,
wherein a lower part of the outlet duct (11) is divided by a central baffle (111) to form two sub-ducts, which are respectively connected to the top of each capsule chamber (1), each cross-section of each respective sub-duct gradually narrowing from the tops of the capsule chambers towards an upper part of the outlet duct, wherein each cross-section stops narrowing and then remains a same size until the sub-ducts converge together into one duct at the upper part of the outlet duct, wherein the central baffle extends from the tops of the capsule chambers towards the nozzle at least to a point where the sub-ducts stop narrowing, wherein each sub-duct comprises one or more sub-baffles, the sub-baffles divide the sub-duct into narrower ducts, wherein the narrower ducts converge into a respective sub-duct above the sub-baffles.