The disclosure relates to devices and methods for the treatment of edema, which devices use a restrictor for flow compensation. Devices and methods of the invention further use a flow-restrictor in the circulatory system, upstream of an intravascular pump, to balance pressure changes induced by the pump and to compensate for downstream flow. The device may be provided as an indwelling, intravascular catheter with a mechanical pump such as an impeller and a selectively deployable restrictor such as an inflatable balloon. Congestive heart failure or edema is treated by\operating the pump in an innominate vein and using the restrictor for flow compensation, to restrict the upstream flow and thus amplify or maintain pressure reduction at the lymphatic outlet.

A method of dispensing a therapeutic fluid from a line includes providing an inlet line connectable to an upstream fluid source. The inlet line is in downstream fluid communication with a pumping chamber. The pumping chamber has a pump outlet. The method also includes actuating a force application assembly so as to restrict retrograde flow of fluid through the inlet while pressurizing the pumping chamber to urge flow through the pump outlet. A corresponding system employs the method.

A pressure indicator for a respiratory treatment device, the pressure indicator including an instrument for measuring pressures, a conduit configured to transmit a pressure within the respiratory treatment device to the instrument, and a pressure stabilizer orifice positioned within the conduit.

The present invention provides an inhalation device which has two pumps, one providing a nebulizer flow and the other providing a support flow. The nebulizer flow passes through a nebulizing nozzle to generate an aerosol flow from a liquid. The aerosol flow and the support flow are combined to provide a total flow through a mouthpiece to a patient. The device can be configured specifically for pediatric use by removing the support flow pump. The invention also provides a method of providing a flow of aerosol and / or air to a patient using the device, in particular a device which provides a defined volume of air and aerosol as a bolus at a defined flow rate on each inhalation.

A blood treatment system and method controlling same are provided. The system comprises a blood pump for urging blood from an arterial or venous interface through a blood flow path; a dialyser in fluid communication with said blood flow path for ultrafiltering the blood to remove fluid therefrom; a fluid removal pump in fluid communication with said dialyser for urging ultrafiltered fluid away from said dialyser; a controller in signal communication with said blood pump; and a reversing valve for selectively reversing direction of blood flow in at least a portion of the blood flow path under signal control of said controller. The blood pump is selectively activatable under signal control of the controller.

The disclosure relates to devices and methods for the treatment of edema that uses an impeller with a balloon that may be mounted on the impeller housing. The invention provides devices and methods for treatment of edema that use an indwelling catheter with an impeller to lower pressure at an outlet of a lymphatic duct and a balloon on the impeller to guide and to restrict blood flow. The balloon restricts return flow from the jugular and guides that flow into the impeller cage. By funneling the flow into the impeller cage, a rate of flow down the vessel may be increased, resulting in a lateral pressure decrease effecting the lymphatic outlet. Because the lymphatic outlet is subject to a pressure decrease, fluids in the lymphatic system drain to the outlet and into the circulatory system.

Methods and systems provide provides a vacuum surge protection system or an Anti-Vacuum Surge (AVS) module and a console-side connector that form an energy (power) and/or data transfer system, which passes the energy and/or data using a magnetic field, via non-contact magnetic induction, between the console-side connector and the AVS module. The AVS module typically powers a medical tool, such as a phacoemulsification handpiece, for ophthalmic procedures, such as cataract removal.

The present invention relates to systems and components for the rapid decompression of pneumothorax. The system includes a needle and novel indicator assembly. The indicator assembly includes valve assembly and color changing member that responds to CO2, visually indicating that the system has been placed in an appropriate location and that decompression is occurring.

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 aspiration system to control vacuum pressure in an ultrasonic surgical handpiece to result in improved control responsiveness during aspiration. The system comprises a console including a vacuum pump. The system includes a cassette comprising a joint that divides a vacuum path into at least two flow paths. A first joint port couples to a first flow path. A second flow path is coupled to a second joint port, a third flow path is coupled to a third joint port, and a fourth flow path is coupled to a port on a surgical waste receiver. A first sensor senses pressure in the fourth flow path and provides a waste receiver pressure signal. A second sensor senses pressure in the third flow path and provides a tip pressure signal. The controller controls a position of a first vent valve and a second vent valve based on the waste receiver pressure signal and the tip pressure signal, respectively.