摘要:
A monodose disposable inhaling device is disclosed which is suitable for delivery, via the respiratory tract, therapeutic medication, which includes among its objects and advantages increased convenience in medication with dry medicaments in powder form, especially with respect to accuracy of dosage and accurate placement of the drug. In one embodiment the inhaler device generally consists of a body member having a delivery portion constructed integral with a housing portion, a button member, a spring member and a spring and capsule support member. Additionally, a screen member can be disposed within the body member at the intersection of the delivery portion and the housing portion.
摘要:
A monodose inhaler for powdered medicaments consists of a hollow substantially pipe-shaped body that has a first portion (H), for housing a capsule or cartridge of powdered medicament, defined by a wall (W) in which there are formed slots (S) as air intakes to an inner region where the powder drops, and a second portion (M) connected to the first portion (H) for delivering the medicament by means of a primary stream (F) that carries the powder from the drop region along a delivery duct (D) whose end is suitable to be placed in the patient's mouth, and it further includes a secondary duct (D′) located under the delivery duct (D) and provided with its own air intake (S′) for delivering a powderless secondary stream (F′).
摘要:
Herein described is a device for controlling fluid motion in a micro/nanofluidic structure of channels, comprising: a structured volume of material (30), bearing a predetermined configuration of micro/nanofluidic channels (C) for holding and transferring amounts of fluids, adapted to define at least one fluid inlet (IN) and at least one fluid outlet (OUT), and presenting a hydrophobic behaviour for the fluids to be handled; and a substrate (31) made of material with piezoelectric properties, coupled to the abovementioned configuration of micro/nanofluidic channels, bearing means for active control of the motion of an amount of fluid, including transducer means (T1-T6) which comprise at least one pair of interdigitated electrodes applied on the substrate (31), which are arranged to selectively generate a surface acoustic wave adapted to propagate on the substrate (31) and interact with the amount of fluid. The transducer devices (T1-T6) are arranged in proximity to a fluid outlet (OUT) of the configuration of channels in such a manner to generate a surface acoustic wave propagating from the fluid outlet (OUT) to a fluid inlet (IN) of the abovementioned configuration and, due to the hydrophobic condition in the channel (C) in which an amount of fluid is localised, determine an effective force at the air-liquid interface where the acoustic wave meets the liquid, whereby the motion of the amount of fluid is induced towards the direction opposite to the surface acoustic wave propagation direction.
摘要:
A device for controlling fluid motion in a micro/nanofluidic structure of channels by means of surface acoustic waves is described. The device comprises a structured volume of material bearing a predetermined configuration of micro/nanofluidic channels for holding and transferring amounts of fluids adapted to define at least one fluid inlet and at least one fluid outlet and presenting a hydrophobic behaviour for the fluids to be handled and a substrate made of material with piezoelectric properties coupled to the micro/nanofluidic channels.
摘要:
A monodose inhaler for powdered medicaments consists of a hollow substantially pipe-shaped body that has a first portion (H), for housing a capsule or cartridge of powdered medicament, defined by a wall (W) in which there are formed slots (S) as air intakes to an inner region where the powder drops, and a second portion (M) connected to the first portion (H) for delivering the medicament by means of a primary stream (F) that carries the powder from the drop region along a delivery duct (D) whose end is suitable to be placed in the patient's mouth, and it further includes a secondary duct (D′) located under the delivery duct (D) and provided with its own air intake (S′) for delivering a powderless secondary stream (F′). This stream (F′) supports and directs the primary stream (F) so that it can climb over the patient's tongue, thus preventing the excessive deposition of the medicament in the oropharingeal cavity and obtaining a greater effectiveness of the treatment thanks to the larger amount of medicament that reaches the lungs. Other advantages of this inhaler are the better separation of the drug from the excipient due to the secondary stream (F′) that hits and directs the primary stream (F), and its low cost thanks to the fact that it can be manufactured in plastic by injection molding with a monolithic structure and therefore can be used as a disposable inhaler.