Abstract: A driver (3) for use with a mist generator cartridge (2). The driver (3) comprises a main PCB (8) carrying electronic components and being provided with a plurality of drive signal connectors (14) each configured to connect electrically to a respective drive signal contact (423, 424) provided on the mist generator cartridge (2) to communicate the drive signals to the mist generator cartridge (2). The driver (3) comprises a connector PCB (9) carrying a plurality of control signal connectors (13) each configured to connect electrically to a respective one of a plurality of control signal contacts (241) provided on the mist generator cartridge (2). At least one flexible electrical connector (11, 12) is coupled between the main PCB (8) and the connector PCB (9) and provides an electrical connection between the main PCB (8) and the connector PCB (9) to communicate the control signals between the main PCB (8) and the connector PCB (9).

Abstract: A mist generator (500) for generating a mist for inhalation by a user. The mist generator (500) comprises a first liquid chamber (546) containing a first liquid, a second liquid chamber (547) containing a second liquid, a first ultrasonic transducer (505) including a planar first atomisation surface and a second ultrasonic transducer (506) including a planar second atomisation surface. The first ultrasonic transducer (505) is configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid and the second ultrasonic transducer (506) is configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid, wherein the first portion of the mist and the second portion of the mist combine to form the mist which flows through a mist outlet port (208) for inhalation by the user.

Abstract: A mist generator (500) for generating a mist for inhalation by a user. The mist generator (500) comprises a first liquid chamber (546) containing a first liquid, a second liquid chamber (547) containing a second liquid, a first ultrasonic transducer (505) including a planar first atomisation surface and a second ultrasonic transducer (506) including a planar second atomisation surface. The first ultrasonic transducer (505) is configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid and the second ultrasonic transducer (506) is configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid, wherein the first portion of the mist and the second portion of the mist combine to form the mist which flows through a mist outlet port (208) for inhalation by the user.

Abstract: A mist generator (500) for generating a mist for inhalation by a user. The mist generator (500) comprises a first liquid chamber (546) containing a first liquid, a second liquid chamber (547) containing a second liquid, a first ultrasonic transducer (505) including a planar first atomisation surface and a second ultrasonic transducer (506) including a planar second atomisation surface. The first ultrasonic transducer (505) is configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid and the second ultrasonic transducer (506) is configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid, wherein the first portion of the mist and the second portion of the mist combine to form the mist which flows through a mist outlet port (208) for inhalation by the user.

Abstract: A mist delivery device for delivering a polydisperse mist. The mist delivery device comprising a mist generator (500) for generating a mist for inhalation by a user. The mist generator (500) comprises a first liquid chamber (546) containing a first liquid, a second liquid chamber (547) containing a second liquid, a first ultrasonic transducer (505) including a planar first atomisation surface and a second ultrasonic transducer (506) including a planar second atomisation surface. The first ultrasonic transducer (505) is configured to generate and transmit ultrasonic waves to generate a first portion of the mist from the first liquid and the second ultrasonic transducer (506) is configured to generate and transmit ultrasonic waves to generate a second portion of the mist from the second liquid, wherein the first portion of the mist and the second portion of the mist combine to form the mist which flows through a mist outlet port (208) for inhalation by the user.

Abstract: A mist generator device (400) for delivering a mist to a user, the mist generator device (400) for use with a driver device (202). The mist generator device (400) comprises a housing (204) comprising a liquid chamber (218), the liquid chamber containing a liquid to be atomised, the liquid comprising a therapeutic. A sonication assembly (425) is coupled to the housing (204) the sonication assembly (425) comprising an ultrasonic transducer (215), a first assembly portion (426) and a second assembly portion (428) coupled to the first assembly portion (426). At least one of the first assembly portion (426) and the second assembly portion (428) comprises a resiliently deformable section that forms a seal between the first assembly portion (426) and the second assembly portion (428) which minimises or prevents a fluid from leaking between the first assembly portion (426) and the second assembly portion (428).

Abstract: A mist generator device (400) for delivering a mist to a user, the mist generator device (400) for use with a driver device (202). The mist generator device (400) comprises a housing (204) comprising a liquid chamber (218) for containing a liquid to be atomised, a sonication assembly (425) coupled to the housing (204) the sonication assembly (425) comprising an ultrasonic transducer (215), a first assembly portion (426) and a second assembly portion (428) coupled to the first assembly portion (426). At least one of the first assembly portion (426) and the second assembly portion (428) comprises a resiliently deformable section that forms a seal between the first assembly portion (426) and the second assembly portion (428) which minimises or prevents a fluid from leaking between the first assembly portion (426) and the second assembly portion (428).