Provided is a medical handpiece having liquid spray and suction functions and capable of being replaced with a drill. The medical handpiece includes a handpiece body having an accommodation space therein, a spray unit receiving liquid from an outside to spray the liquid onto a target to be treated, a pump unit transmitting air pressure to the spray unit to increase a spray speed of liquid sprayed by the spray unit, a drive unit converting a rotary motion into a reciprocating motion to transmit power to the pump unit, and a suction unit sucking liquid and foreign matter from the target to be treated.

Implementations of a delivery device and method are disclosed. One implementation is a delivery device comprising a flow chamber with an inlet port for receiving a fluid flow in the flow chamber, and an outlet port for exiting a material from the flow chamber. The flow chamber may include a formation portion in which a suspension of the material is formed, and a collection portion that directs the suspension toward and/or into the outlet port. An amount of the material may collect in the collection portion adjacent the outlet port. The device may further comprise an insertion port for permitting insertion of the material in the flow chamber, and/or a pusher operable to move the amount of material through the outlet port. Related devices and methods also are disclosed.

A nebulizer assembly for a respiratory device is provided having a housing defining a chamber. The housing also has a nebulizer port configured to receive a nebulizer to discharge atomized medication into the chamber. An outlet of a handle is coupled to the inlet of the housing. A hose is coupled to an inlet of the handle. A patient interface is coupled to the outlet of the housing. Air flows from the hose to the patient interface via the handle and the housing. The air mixes with the atomized medication within the chamber.

A nebulizer assembly for a respiratory device is provided having a housing defining a chamber. The housing also has a nebulizer port configured to receive a nebulizer to discharge atomized medication into the chamber. An outlet of a handle is coupled to the inlet of the housing. A hose is coupled to an inlet of the handle. A patient interface is coupled to the outlet of the housing. Air flows from the hose to the patient interface via the handle and the housing. The air mixes with the atomized medication within the chamber.

Disclosed is a barrier tent comprising a canopy, at least a portion of the canopy being composed of flexible sheet material; a frame for supporting the canopy; the canopy and frame being configured such that an internal surface of the canopy defines at least a portion of a patient segregation cavity to enclose a patient's head and at least a portion of the patient's body within the patient segregation cavity; and a gas input extending through the canopy, the gas input being positioned at a location configured such that supply of a gas through the input limits movement of aerosolised particles generated by or adjacent the patient toward the internal surface of the canopy.

Disclosed is a barrier tent comprising a canopy, at least a portion of the canopy being composed of flexible sheet material; a frame for supporting the canopy; the canopy and frame being configured such that an internal surface of the canopy defines at least a portion of a patient segregation cavity to enclose a patient's head and at least a portion of the patient's body within the patient segregation cavity; and a gas input extending through the canopy, the gas input being positioned at a location configured such that supply of a gas through the input limits movement of aerosolised particles generated by or adjacent the patient toward the internal surface of the canopy.

A nebulizer and a nozzle thereof are provided. The nozzle has a containing seat and a cover. The containing seat has an air conduit. The air conduit has an input terminal and an output terminal. The cover has a guiding channel and an impediment. An input opening is formed in the nozzle for introducing air. A first opening of the guiding channel is disposed near the output terminal and the input opening is disposed far of the output terminal. The impediment is disposed in front of the output terminal and has a plane. Air emitted from the output terminal lashes the plane and then flows to a second opening of the guiding channel, and the air of the input opening is guided to the first opening for decreasing a whole resistance of the nozzle, and thereby increasing nebulization efficiency.

An atomizer includes a motor mounted in a housing. First and second cylinder units are received in the housing. The first cylinder unit includes a first piston and a first coupling bearing connected to the first piston. The second cylinder unit includes a second piston and a second coupling bearing connected to the second piston. An eccentric transmission shaft of the motor extends through the first and second coupling bearings of the first and second cylinder units. The first and second pistons of the first and second cylinder units move reciprocatingly when the motor operates. An intake check valve is mounted in an intake passage between an intake port of the first cylinder unit and an inlet of the housing. An outlet check valve is mounted in an outlet passage between an outlet port of the second cylinder unit and an outlet of the housing.

An atomizer includes a motor mounted in a housing. First and second cylinder units are received in the housing. The first cylinder unit includes a first piston and a first coupling bearing connected to the first piston. The second cylinder unit includes a second piston and a second coupling bearing connected to the second piston. An eccentric transmission shaft of the motor extends through the first and second coupling bearings of the first and second cylinder units. The first and second pistons of the first and second cylinder units move reciprocatingly when the motor operates. An intake check valve is mounted in an intake passage between an intake port of the first cylinder unit and an inlet of the housing. An outlet check valve is mounted in an outlet passage between an outlet port of the second cylinder unit and an outlet of the housing.

The invention provides an apparatus for use in aerosolized delivery of a powder, and comprises a first chamber containing gas at a first pressure higher than atmospheric pressure, and a second chamber containing gas at a second pressure higher than atmospheric pressure. The apparatus also comprises a powder, contained within the first or second chamber. The first chamber has a first external wall and a separating wall, the separating wall being shared with the second chamber. The first external wall or the separating wall is configured to rupture if the pressure difference across it becomes equal to or greater than a threshold pressure difference. In particular, the apparatus is configured so that the difference between the second pressure and atmospheric pressure is greater than the threshold pressure difference. In an initial state, the apparatus is configured such that the difference between the second pressure and the first pressure is less than the pressure difference required to rupture the separating wall, and the difference between the first pressure and atmospheric pressure is less than the pressure difference required to rupture the first external wall.