A patient's body temperature measurement may be made by varying the heat transfer dynamics of a fluid exiting the patient's body and fitting parameters of heat transfer configuration to measurements under the varied conditions. Then the input temperature of the patient core can be extracted from the model and a current temperature measurement remote from the patient core and optionally other measurements such as fluid flow rate.

The invention relates to a breathing assistance apparatus that may be configured to reduce the risk of damage to electronics within the apparatus as a result of liquid leaks within the apparatus or impacts to the apparatus. In other forms, the apparatus may be configured to allow for easy assembly and/or safe operation.

A medical device includes a housing, a power supply, a thermally conductive mounting clamp, a heat shield, and at least one fastener. The housing includes a handle. The power supply is disposed within the housing. The thermally conductive mounting clamp is attached to an outer surface of the housing. The heat shield is disposed within the housing adjacent to the power supply. The heat shield is disposed against at least one interior surface of the handle. The at least one fastener passes through at least one opening in the housing and is in thermally conductive contact with the thermally conductive mounting clamp. Heat generated by the power supply is configured to dissipate from the power supply, through the heat shield, through the at least one fastener, and into the thermally conductive mounting clamp.

Over-enthalpy conditions when using a respiratory and/or surgical humidifier system can be prevented. A heating element power in an inspiratory conduit can be limited based at least in part on one or more parameters of the gases flow, and/or on an ambient temperature. The limit on the heating element power in the inspiratory conduit can be achieved using a processor and/or protection circuit(s) located outside the processor. For example, the system can use the processor to determine and/or apply the limit as a level of protection and use the protection circuit(s) as another level of protection.

A thermogenic emergency airway management device configured to prevent or treat hypothermia in a patient. The device may be configured to receive inlet air and modify one or more properties of the inlet air to output air at a temperature and/or humidity associated with the prevention and/or treatment of hypothermia. In an embodiment, the device may receive input via a user interface to determine a temperature and/or humidity associated with the air to be output to the patient. In an embodiment, the input may additionally include an amount of air to be output to the patient. In such an embodiment, the device may be configured to cause the amount of air to be output to the patient to prevent and/or treat hypothermia.

A patient's body temperature measurement may be made by varying the heat transfer dynamics of a fluid exiting the patient's body and fitting parameters of heat transfer configuration to measurements under the varied conditions. Then the input temperature of the patient core can be extracted from the model and a current temperature measurement remote from the patient core and optionally other measurements such as fluid flow rate.

A negative pressure wound therapy device includes at least one piezoelectric pump and a control circuit. The control circuit is configured to generate a first control signal to control operation of the at least one piezoelectric pump, the control signal having a first root mean square (RMS) voltage, transmit the first control signal to the at least one piezoelectric pump, identify at least one of a change of state of the at least one piezoelectric pump or an expiration of a duration of time associated with operation of the at least one piezoelectric pump, responsive to identifying the at least one of the change of state or the expiration of the duration of time, generate a second control signal having a second RMS voltage less than the first RMS voltage, and transmit the second control signal to the at least one piezoelectric pump.

A drug delivery apparatus including a barrel to contain a substance, a piston slidable in the barrel, a supply circuit to provide input currents, an antenna affixed along the barrel to receive the input current, generate inductance with the piston, and provide output currents commensurate with a position of the piston along the piston course, and processing circuitry configured to receive the output currents, and determine a quantity of the substance inside the barrel based on the output currents.

A vaporizing article, comprises a vaporizer drive circuit; one or more memories configured to store a percentage of at least one constituent in an inhalation media, one or more compensation values for at least one compensation category for the at least one constituent, and instructions; and a control circuit comprising a processor coupled with the one or more memories configured to run the instructions, the instructions configured to cause the processor to: receive a dose target for a constituent; determine whether to perform compensation for an inhalation media dose in order to ensure the dose target is met; when compensation is to be performed, determine the properly compensated inhalation media dose based on an associated compensation value for the constituent; and control the vaporizer drive circuit so as to dispense a compensated dose of the inhalation media.

A method and apparatus for breathing including a blower mounted in a specific part made of silicone, which reduces blower immissions and emissions. The conducting structure influences the flow of the respiratory gas in order to reduce interference when measuring the volumetric flow.