Abstract:
A dry powder delivery device may be configured to provide micronized dry powder particles to airways of a user. The device may include a cylindrical container delimiting a chamber containing at least one magnetically- responsive object, a motor external to said chamber, a magnet external to the chamber and rotatably coupled with the motor, and an outflow member configured to direct airflow to a user. The magnetically-responsive object may be coated with micronized dry powder particles, and the motor may be operable to rotate the magnet about an axis. Rotation of the magnet creates a magnetic field that causes the magnetically-responsive object to move in response to the magnetic field and collide with a side wall of the container to deaggregate the dry powder particles and aerosolize the dry powder in the chamber.
Abstract:
A dry powder inhaler may include a drug chamber configured to contain a formulation including carrier particles and working agent particles, a mouthpiece configured to direct flow of working agent particles to a user, and a retaining member proximal the mouthpiece. The retaining member be sized and arranged to prevent flow of substantially all carrier particles to the user while permitting flow of working agent particles to a user. The inhaler may include a formulation including carrier particles for delivering working agent to the pulmonary system of a patient. The carrier particles may have an average sieve diameter greater than about 500 µm. The carrier particles may be one of polystyrene, PTFE, silicone glass, and silica gel or glass.
Abstract:
A dry powder inhaler including a housing defining a chamber for receiving a dose of powdered medicament, an inhalation port in fluid communication with the chamber, at least one airflow inlet providing fluid communication between the chamber and an exterior of the housing, and a flutter element in the chamber and associated with a dose of powdered medicament. The flutter element has a tensioned distal end proximate the at least one airflow inlet and a free proximal end opposite to the distal end and downstream of the inlet. The flutter element is configured to vibrate in response to airflow through the chamber and aerosolize the dose of powdered medicament.
Abstract:
A method of method of coating powdered medical agent onto a carrier particle for use in a dry powder inhaler may include applying ultrasonic energy to agglomerated powdered medical agent to deaggregate and aerosolize particles of the medical agent into particles having a desired average particle size, and coating at least one carrier particle with a desired amount of the deaggregated and aerosolized particles of the medical agent.
Abstract:
A dry powder inhaler may include a drug chamber configured to contain a formulation including carrier particles and working agent particles, a mouthpiece configured to direct flow of working agent particles to a user, and a retaining member proximal the mouthpiece. The retaining member be sized and arranged to prevent flow of substantially all carrier particles to the user while permitting flow of working agent particles to a user. The inhaler may include a formulation including carrier particles for delivering working agent to the pulmonary system of a patient. The carrier particles may have an average sieve diameter greater than about 500 μm. The carrier particles may be one of polystyrene, PTFE, silicone glass, and silica gel or glass.
Abstract:
A device for coating dry powder microparticles onto a surfacemay include a jet mill configured to mill dry powder particles into microparticles having a desired aerodynamic diameter and to deaggregate the microparticles, a feed hopper structured and arranged to feed dry powder particles to the jet mill, a surface configured to receive dry powder microparticles and an exit nozzle associated with the jet mill. The exit nozzle may be arranged to direct deaggregated micronized dry powder particles from the jet mill to the surface to be coated. The device may further include a holder structured and arranged to hold an item, wherein the item includes the surface. In some aspects of the device, the item may be a film.
Abstract:
A dry powder inhaler including a housing defining a chamber for receiving a dose of powdered medicament, an inhalation port in fluid communication with the chamber, at least one airflow inlet providing fluid communication between the chamber and an exterior of the housing, and a flutter element in the chamber and associated with a dose of powdered medicament. The flutter element has a tensioned distal end proximate the at least one airflow inlet and a free proximal end opposite to the distal end and downstream of the inlet. The flutter element is configured to vibrate in response to airflow through the chamber and aerosolize the dose of powdered medicament.
Abstract:
A dry powder inhaler including a housing defining a chamber for receiving a dose of powdered medicament, an inhalation port in fluid communication with the chamber, at least one airflow inlet providing fluid communication between the chamber and an exterior of the housing, and a flutter element in the chamber and associated with a dose of powdered medicament. The flutter element has a tensioned distal end proximate the at least one airflow inlet and a free proximal end opposite to the distal end and downstream of the inlet. The flutter element is configured to vibrate in response to airflow through the chamber and aerosolize the dose of powdered medicament.
Abstract:
A device for coating dry powder microparticles onto a surfacemay include a jet mill configured to mill dry powder particles into microparticles having a desired aerodynamic diameter and to deaggregate the microparticles, a feed hopper structured and arranged to feed dry powder particles to the jet mill, a surface configured to receive dry powder microparticles and an exit nozzle associated with the jet mill. The exit nozzle may be arranged to direct deaggregated micronized dry powder particles from the jet mill to the surface to be coated. The device may further include a holder structured and arranged to hold an item, wherein the item includes the surface. In some aspects of the device, the item may be a film.