A breathing assistance apparatus is configured with features that improve serviceability of the apparatus. The apparatus can include animations to provide instruction regarding correcting easily-identified fault conditions and to provide instruction regarding routine maintenance routines. The apparatus also can be configured with top level control menus that are obscured in a manner to limit manipulation of the top level control elements by unauthorized users.

The present invention includes a mask body having a cord attached at three locations on the mask body and a deformable bridge piece. The cord is attached at the middle of an upper edge of the mask body generally aligning with the location of the bridge of the wearer's nose. The cord is further attached at each of two lower positions on the mask body, preferably near or at the bottom corners of the mask body. The cord is further threaded through eyelets located at each of two upper positions on the mask body, preferably near or at the upper corners of the mask body. The deformable bridge piece is located along the upper edge of the mask body, and generally centered on the bridge of the wearer's nose.

Various systems and methods for the pressure-regulated transfer of medical fluids are disclosed. The system can include an adapter assembly that connects with a medical container and with a syringe assembly. The syringe assembly can include a first reservoir and a second reservoir. In various embodiments, when the adapter assembly and the syringe assembly are coupled, the first reservoir and the container can exchange regulating fluid and the second reservoir and the container can exchange medical liquid from the medical container.

An insufflator for insufflating a body cavity includes a compressed air vessel and a flow control valve for delivering insufflating air to the cavity through a first trocar. A discharge control valve at an outlet port of a second trocar exhausts insufflating air from the cavity. A pressure sensor on the first trocar monitors cavity pressure, and a microcontroller operates the flow control valve for maintaining a predefined working pressure in the cavity. A foot operated switch is operable by a surgeon for opening and closing the discharge control valve. When the pressure in the cavity drops below the predefined working pressure, the flow control valve increases the insufflating air to the cavity, thereby increasing the insufflating air flow through the cavity for removing undesirable gases. The apparatus and insufflator may also be adapted for removing smoke, nitrogen or other undesirable gases during both cauterisation and cryogenic procedures.

A connection unit establishes a fluid connection between a patient and a ventilator. The connection unit includes a patient-side connection piece, a device-side connection piece, a port piece and a central piece, which provides a tube with a curved tube segment and is connected with a fluid-tight connection to the two connection pieces. The port piece includes a straight tube segment and a bent surface with a bent surface and with a passage opening. The port piece is inserted into a receiving opening of the central piece. The bent surface of the port piece forms a part of a wall of the curved tube segment. The straight tube segment of the port piece and the central piece provide a straight tube, which is interrupted by the passage opening. An additional device is insertable through the straight tube segment and through the passage opening into the provided tube.

Gas recirculation systems for use in endoscopic surgical procedures including a gas recirculation pump are disclosed. The gas recirculation pump may work in conjunction with an insufflator used to inflate a patient's peritoneal cavity during surgery. The gas recirculation system may recirculate a high flow rate of gas from and to the patient while filtering particulate matter out of the gas and while maintaining an adequate moisture content in the gas. The gas recirculation pump may include a disposable pump cartridge releasably connected to a pump motor. A controller may detect a fault or safety condition in the gas recirculation system based on the load placed on the pump motor.

A trans anal irrigation device that can be used on a bed. The device includes a rectal catheter connected to an irrigation fluid supply. A waste collection bag is also connected to the catheter. The catheter may be insertable in a seat attached to a fluid supply line. A valve in one of the catheter or seat selectably allows or prevents fluid communication between the catheter and a waste collection bag. The catheter may include an inflationless cuff made of a flexible material that permits it to be inserted in the rectum to prevent leakage around the exterior of the catheter.

Liquid drug cartridges and an associated inhaler are used to deliver one more separate doses of an aerosolized liquid drug. A cartridge includes a container for storing the liquid drug, an end cap having an ejection opening, a filter element, and a piston that is repositionable relative to the container to selectively eject a volume of liquid drug from the ejection opening. The filter element filters the liquid drug prior to ejection from the ejection opening. The liquid drug cartridge can be coupled with an inhaler that includes an aerosol generator. The aerosol generator includes a vibratable membrane onto which the liquid drug is ejected. The liquid drug is aerosolized by the vibration of the membrane for inhalation by a user.

An insufflator for insufflating a body cavity includes a compressed air vessel and a flow control valve for delivering insufflating air to the cavity through a first trocar. A discharge control valve at an outlet port of a second trocar exhausts insufflating air from the cavity. A pressure sensor on the first trocar monitors cavity pressure, and a microcontroller operates the flow control valve for maintaining a predefined working pressure in the cavity. A foot operated switch is operable by a surgeon for opening and closing the discharge control valve. When the pressure in the cavity drops below the predefined working pressure, the flow control valve increases the insufflating air to the cavity, thereby increasing the insufflating air flow through the cavity for removing undesirable gases. The apparatus and insufflator may also be adapted for removing smoke, nitrogen or other undesirable gases during both cauterisation and cryogenic procedures.