摘要:
A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
摘要:
The invention pertains to flexible devices used for zero-heat-flux, deep tissue temperature measurement, especially to disposable temperature measurement devices. Such a device is constituted of a flexible substrate. An electrical circuit is disposed on a side of the substrate. The electrical circuit includes first and second thermal sensors disposed, respectively, on first and second substrate layers. A heater trace is disposed on the first substrate layer with the first thermal sensor. The first and second substrate layers are separated by a flexible layer of insulation disposed between the first and second substrate layers. The heater trace defines a heater with a central portion that operates with a first power density and a peripheral portion around the central portion that operates with a second power density greater than the first power density.
摘要:
A forced air warming unit has a casing with inlet and outlet openings. The casing encloses a scroll housing with a curved inside surface in which a blower is disposed. A circuit board in the casing encloses the blower in the scroll housing. At least one opening penetrates the circuit board. A heater plate is disposed between the circuit board and the blower. The blower draws air through the inlet opening, along a first side of the circuit board through the at least one opening into the scroll housing. The blower also forces air along a second side of the circuit board which faces the scroll housing, through air passages in the circuit board, along the first side through the at least one opening, into the scroll housing. The blower accelerates air along the curved inside surface and past the heater plate. Heated, pressurized air exits through the outlet opening.
摘要:
A continuous positive airway pressure (CPAP) system in combination with a device for positioning a breathing apparatus over a breathing orifice in the head of a person, the person having an occipital lobe and an axis of symmetry, the device including an occipital anchor for anchoring against the head of the person beneath the occipital lobe of the person. The device further including a forward anchor for anchoring against a forward portion of the person's head. A spring connector connects the forward anchor and the occipital anchor, and biases the occipital anchor against the head of the person beneath the occipital lobe and the forward anchor against the corresponding portion of the person's head so as to attach the device to the person's head. The occipital anchor, the forward anchor and the spring connector are substantially aligned along the axis of symmetry of the person's head. The mount is connected to the spring connector for mounting the apparatus so as to locate the apparatus over the orifice.
摘要:
A respiratory mask is provided according to the invention. The respiratory mask includes a respiratory interface adapted to input and output a gas to a respiratory system of a person, a hat having a substantially semi-hemispheric portion adapted to fit over a head of the person and a brim extending outwardly from at least a front portion of the semi-hemispheric portion, and a hose having a proximal end connected to the respiratory interface and passing through the brim and attached to the semi-hemispheric portion, wherein the brim positions and retains the hose, with a distal end of the hose capable of being connected to a gas supply.
摘要:
A method and apparatus for calculating the area of an image, including the steps of selecting an image and determining a first radial line segment from the center of the image. The second step is locating at least one local minima along the first radial line segment, the minima being located by measuring the average brightness for a region immediately adjacent to it. The darkest region of the image is followed through a plurality of angles theta covering 360 degrees about the center by finding the local minimum on a ruler which is closest to the local minimum of a radial line segment adjacent to the segment for angle theta -1. The area is determined by summing the areas of individual wedge shaped slices defined by theta and theta -1.
摘要:
A zero-heat-flux, deep tissue temperature measurement system measures internal body temperature by way of a probe having a heater and thermal sensors arranged in a zero-heat-flux construction. The measurement system includes control mechanization that determines heater and skin temperatures based upon data obtained from the probe and uses those temperatures to calculate a deep tissue temperature. The measurement system includes a signal interface cable having a connector where a probe can be releasably connected to the system. The cable and attached connector are a removable and replaceable part of the system, separate from the probe. The measurement system provides an output signal imitating a standard input signal configuration used by other equipment.
摘要:
A zero-heat-flux DTT measurement device is constituted of a flexible substrate supporting an electrical circuit including a heater trace defining a heater, thermal sensors, and a thermal sensor calibration circuit.
摘要:
A zero-heat-flux DTT measurement device is constituted of a flexible substrate supporting an electrical circuit including a heater trace defining a heater, thermal sensors, and a thermal sensor calibration circuit.
摘要:
A high flow rate infusion unit includes a heating unit with opposing, electrically-operated heating plates that contact a heat exchanger to heat infusate flowing therethrough. Pressure infusers on the infusion unit are operable to provide infusate at a high flow rate. A flat, elongate heat exchanger has a laminar fluid flow path receivable between the heating plates to which heat is conducted by contact with the heating plates. A bubble trap and a valve are disposed within the heat exchanger. The bubble trap collects bubbles and vents air from infusate exiting the fluid flow path, and the valve shuts off the flow of infusate if the volume of air in the bubble trap exceeds a predefined limit.