A patient interface may include a dual chamber cushion assembly having a nasal chamber and an oral chamber. The nasal chamber may be arranged to deliver pressurized breathable gas to a patients nasal passages, and the oral chamber may be arranged to deliver pressurized breathable gas to the patients oral passages. The nasal chamber may be pressurized to a different level than an oral chamber to promote nasal breathing. An air passage may fluidly connect the nasal chamber and the oral chamber so that pressurized breathable gas may flow from the nasal chamber to the oral chamber.

Dialysis systems comprising actuators that cooperate to perform dialysis functions and sensors that cooperate to monitor dialysis functions are disclosed. According to one aspect, such a hemodialysis system comprises a user interface model layer, a therapy layer, below the user interface model layer, and a machine layer below the therapy layer. The user interface model layer is configured to manage the state of a graphical user interface and receive inputs from a graphical user interface. The therapy layer is configured to run state machines that generate therapy commands based at least in part on the inputs from the graphical user interface. The machine layer is configured to provide commands for the actuators based on the therapy commands.

A method of operating an infusion pump includes transmitting light through or around a drop of fluid suspended from an end of a drip tube for the infusion pump, the end of the drip tube located in a drip chamber for the infusion pump, wherein the drip tube is configured for connection to a source of the fluid; receiving, using an optical system for the pump, light transmitted through or around the drop; transmitting, to a specially programmed microprocessor and using the optical system, data regarding the received light; and, using the microprocessor to calculate a volume of the drop using the data.

A medicine injection pen includes a body, a drive member, a cartridge housing, and a medicine cartridge retained within the cartridge housing. The drive member is configured to move relative to the body and the medicine cartridge defines an interior volume configured to retain a liquid medicine. The drive member is configured to translate a piston within the interior volume toward a dispensing end of the medicine cartridge to dispense at least some of the liquid medicine. The medicine cartridge also includes an insertion port configured to receive a medicine dispensing element therethrough for dispensing a liquid medicine into the interior volume to replace at least some of the liquid medicine dispensed through the dispensing end. Dispensing of the liquid medicine into the interior volume of the medicine cartridge applies a fluid pressure to the piston to translate the piston away from the dispensing end of the medicine cartridge.

Described herein is a safety system that works collectively with an automated fluid drain control apparatus and systems and clinical experts to establish protocols and methods for given patient populations to ensure that the drainage of fluid from patients is both safe and effective. It further enables the transportation of drain orders from systems external to the drain system and returns to them the drainage data on a periodic basis for inclusion into the patient chart.

A method and apparatus for determining gastric content volume. The internal temperature of the contents of the stomach is measured at least one predetermined time t after the patient is fed, and the gastric volume determined from the temperature. In preferred embodiments, a known volume of water at a known temperature is injected into the stomach, and the temperature of the stomach contents is measured after the stomach temperature has stabilized. An apparatus for performing the method, in which continuous measurement is possible without disturbing the patient's feeding schedule, and a method for using the inventive method in the control of an automatic feeding apparatus, are also disclosed.

This disclosure relates to a medical device including a hard part and a converter. The hard part has fluid paths for conducting a medical fluid through the hard part. The converter is arranged to measure a characteristic of the medical fluid while the medical fluid is present in one of the fluid paths. At least a section of the converter is applied or superimposed to the hard part by at least one additive application method.

In general, systems for administering a dmg are provided. In an exemplary embodiment, a dmg administration system includes a dmg administration device configured to communicate with a computer system and at least one sensor configured to obtain sensor data and communicate the sensor data to the drug administration device. The dmg administration device is configured to utilize a first drug dosing scheme when a drug is delivered to a patient, determine a second drug dosing scheme for delivering a drug to the patient dependent on dosing data from the computer system and sensor data collected by the sensor during and/or after the delivery of the first drug according to the first drug dosing scheme, and utilize the second drug dosing scheme when the drug is delivered to the patient.

A nebulizer for producing an inhalable mist of droplets, comprising at least an aerosol generator, a housing having a liquid reservoir and control electronics, the aerosol generator consisting at least of a membrane, a piezo element and a substrate plate, and the control electronics comprising at least an RF generator, a controller, memory and switching elements, and an inductor. The aerosol generator forms a resonant circuit together with the inductor and the control electronics are configured to at least partly excite the aerosol generator to vibrate. The aerosol generator is configured such that aerosol droplets are producible by vibrations and the RF generator is configured to vary the amount of aerosol produced.

A portable hemodialysis system is provided comprising a dialyzer, having a dialysate-replenishing system for replenishing minerals of dialysate in the dialyzer, the dialysate-replenishing system includes: a sorbent filter configured to remove ammonia from the dialysate, the sorbent filter having an outlet that outputs the dialysate to a dialysate flow path; a first reagent source containing a first reagent solution; a first pump configured to inject the first reagent solution into the dialysate flow path; a first mixer coupled to the dialysate flow path and downstream of the first pump, the first mixer configured to mix the dialysate with the first reagent solution; a conductivity sensor configured to measure a level of dissolved solids in the dialysate after the first mixer; and a controller configured to adjust a flow rate of the first reagent solution by adjusting the first pump based at least on the level of measured levels.