An intra-cavity circulation heat perfusion apparatus, comprising a casing, an electromagnetic induction heating means, and a controller. The electromagnetic induction heating means comprises a tray and an electromagnetic induction coil; the tray is used for bearing a heating tank; a master control unit of the controller controls the electromagnetic induction coil to be electrified to heat the heating tank, so as to indirectly heat a medicinal liquid in a liquid storage chamber; a data acquisition unit is used for acquiring medicinal liquid temperature values of the heating tank, a liquid outlet pipeline, and a liquid return pipeline and transferring same to the master control unit; the master control unit controls a power control unit according to the medicinal liquid temperature values to control a heating power of the electromagnetic induction coil.

An infusion cartridge includes: a cartridge main body that defines a housing space configured to house an infusion solution; a tube member having a proximal end connected to the cartridge main body and defining a flow path communicating with the housing space; and a cap member attachable to and detachable from a distal end of the tube member. The cartridge main body includes a flow path closing portion configured to be changed between (i) a closing position in which the flow path closing portion closes the flow path of the tube member and (ii) an opening position in which the flow path closing portion does not close the flow path of the tube member. The cap member is attachable to the cartridge main body so as to maintain the flow path closing portion in one position among the closing position and the opening position.

An apparatus for determining the volume of fluid dispensed. The apparatus has an acoustic volume sensor that acoustically excites a reference volume and a measurement chamber with a loudspeaker and measures the acoustic response with microphones acoustically coupled to the reference and the measurement chamber. The loudspeaker and sensing microphones are connected to the measurement chamber by separate ports. A detachable dispensing chamber is coupled to the acoustic volume sensor. The volume of the fluid dispensed is determined by a processor based on the acoustic response of the microphones to acoustic excitement by the loudspeaker.

Fill stations and base stations are provided for personal pump systems. The fill stations may be opened and closed to accept a reservoir and to allow fluid to be introduced into the reservoir for use with personal pump systems. The fill stations may hold the reservoir at a tilt relative to an underlying surface and may discourage overfilling of the reservoir. The filling stations may also include viewing windows having fluid lines marked thereon for indicating volume of fluid within the reservoir.

An apparatus for determining the volume of fluid dispensed. The apparatus has an acoustic volume sensor that acoustically excites a reference volume and a measurement chamber with a loudspeaker and measures the acoustic response with microphones acoustically coupled to the reference and the measurement chamber. The loudspeaker and sensing microphones are connected to the measurement chamber by separate ports. A detachable dispensing chamber is coupled to the acoustic volume sensor. The volume of the fluid dispensed is determined by a processor based on the acoustic response of the microphones to acoustic excitement by the loudspeaker.

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

An IV bag wringer includes a frame defining a frame opening and multiple roller assemblies disposed within the frame opening. Each roller assembly includes a shaft coupled to the frame and a roller coupled to the shaft. Two opposing rollers are positioned to receive an IV fluid bag in a gap between the rollers such that the IV bag wringer hangs on the IV fluid bag. The weight of the IV bag wringer moves it downward along the IV fluid bag so that the opposing rollers squeeze fluid out of the IV fluid bag at a rate greater than a gravity flow rate from the IV fluid bag alone. Hand cranked IV bag wringers, motor actuated IV bag wringers and methods of operating IV bag wringers are also provided.

A method and system is disclosed for operating a medical device with or without a cassette in place. A method is disclosed for adding additional VTBI to an ongoing infusion without stopping the infusion and with maintaining the infusion parameters. A method and system is disclosed for changing the CCA without having to interrupt or completely stop an ongoing infusion. Quick titration buttons are provided to allow improved navigation between various delivery display screens.

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

A method for making a fluid delivery device including a reusable portion and a disposable portion. The disposable portion is adapted to be secured to a user and includes a conduit fluidly connecting a reservoir containing a fluid and a moveable pumping member. The moveable pumping member can expand an expandable structure with the fluid. The reusable portion is selectively engageable to the disposable portion and contains a drive device for engaging the moveable pumping member of the disposable portion. The drive device has a rotatable pumping actuation member with a plurality of projections for engaging the moveable pumping member and thereby moving the fluid to expand the expandable structure.