A system includes a probe, a processor, and a bubble detector. The probe is configured for insertion into a lumen of a patient and is coupled to an irrigation pump. The processor is configured to control delivery of irrigation fluid to the probe by turning on and controlling the irrigation pump. The bubble detector is coupled to a proximal portion of the probe. In response to the irrigation pump being turned on, the bubble detector is configured to automatically start detection of gas bubbles in the irrigated fluid, and transmit fail-safe signals indicating fail-safe bubble detection is operational. The processor is further configured to monitor the fail-safe signals and, in absence of fail-safe signals, to automatically disable delivery of the irrigation fluid.

An infusion pump assembly includes a reservoir assembly configured to contain an infusible fluid. A motor assembly is configured to act upon the reservoir assembly and dispense at least a portion of the infusible fluid contained within the reservoir assembly. Processing logic is configured to control the motor assembly. A primary power supply is configured to provide primary electrical energy to at least a portion of the processing logic. A backup power supply is configured to provide backup electrical energy to the at least a portion of the processing logic in the event that the primary power supply fails to provide the primary electrical energy to the at least a portion of the processing logic.

Methods and apparatus provide communications among respiratory therapy device (“TD”), server and intermediary (e.g., a control device (“CTLD”) for the therapy device) to improve security. More secure communication channel(s) may be established using shared secrets derived with different channels. The communications may include transmitting therapy data from TD to server for authentication. The CTLD may receive the data and a nonce from a server. The CTLD receives from the TD a signing key dependent on the nonce and a secret shared by TD and server. The CTLD generates an authorisation code with received therapy data and the key for authentication of the data by the server upon its receipt of the code and data. The server computes (1) a key from the nonce and the secret known to TD, and (2) another authorisation code from received therapy data and the key. Data authentication may involve comparing received and computed codes.

There is provided in accordance with an exemplary embodiment of the invention, a device and a method for controlled extraction of at least one active substance from at least one type of plant matter by application of heat, the device comprising: a heating element adapted to apply heat to an area of the plant matter to extract the substance; and a mechanism adapted for moving the plant matter relative to the heating element. Optionally, the active substance is a restricted substance. There is also provided in accordance with an exemplary embodiment of the invention, a method of monitoring and controlling inhalation of a restricted substance. There is provided in accordance with an exemplary embodiment of the invention, a method of manufacturing a tape of plant matter comprising an active substance.

A remote controller updating system for an implantable blood pump including an implantable blood pump, an implantable controller coupled to the implantable blood pump, and a pump driveline including a data network connection in communication with the implantable controller. The system may also include a pump connector coupled to the pump driveline, a remote controller couplable to the implantable blood pump, and a system update assembly including a system update connector couplable to the pump connector and a power source coupled to the system update connector.

A system for tracking anesthetic agent in a vaporizer reservoir can include a mass flow sensor configured to measure a flow rate entering or exiting a vaporizer chamber, a gas pressure sensor configured to measure a pressure of a mixed gas provided from the vaporizer chamber, and a processor to calculate a remaining agent time based on at least the gas flow rate, the pressure of the mixed gas, and an anesthetic concentration in the mixed gas. The processor can also provide the remaining agent time for display to a clinician.

A system for reducing airway obstructions of a patient may include a ventilator, a control unit, a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface, and a nasal interface. The nasal interface may include at least one jet nozzle, and at least one spontaneous respiration sensor in communication with the control unit for detecting a respiration effort pattern and a need for supporting airway patency. The system may be open to ambient. The control unit may determine more than one gas output velocities. The more than one gas output velocities may be synchronized with different parts of a spontaneous breath effort cycle, and a gas output velocity may be determined by a need for supporting airway patency.

An infusion pump assembly includes a reservoir assembly configured to contain an infusible fluid. A motor assembly is configured to act upon the reservoir assembly and dispense at least a portion of the infusible fluid contained within the reservoir assembly. Processing logic is configured to control the motor assembly. The processing logic includes a primary microprocessor configured to execute one or more primary applications written in a first computer language; and a safety microprocessor configured to execute one or more safety applications written in a second computer language.

A monitoring system performs a method for detecting a disruption of a fluid connection between a first fluid containing system and a second fluid containing system. The monitoring system generates a monitoring signal which is representative of a fluid pressure in respect of the first fluid containing system and which is responsive to the disruption of the fluid connection, and a tracking signal which corresponds to and is more smoothed over time than the monitoring signal. The monitoring system further sets a detection range in a given relation to the tracking signal so that the detection range follows changes in the tracking signal, and detects a condition indicative of the disruption by comparing a current pressure value of the monitoring signal to the detection range. The monitoring system may be connected to or part of an apparatus for blood treatment and operable to detect a disconnection of an extracorporeal blood circuit from a vascular system of a patient, e.g. downstream of a blood pump in the extracorporeal blood circuit.

A control system for a two-wheeled vehicle, including an inertial measurement unit (IMU); one or more control moment gyroscopes (CMGs); one or more CMG controllers to control the one or more CMGs; an accelerometer to measure a y-axis acceleration for the vehicle, the y-axis being perpendicular to a direction of travel of the vehicle and parallel to a ground surface; and a processing element to calculate a roll angle for the vehicle based at least in part on the y-axis acceleration measured by the accelerometer, determine a force component based at least in part on the calculated roll angle, and generate a CMG command for a CMG gimbal rate based at least in part on the determined force component.