| (26 suppliers)|
Medical humidifier is disclosed for a respiratory flow path connected directly to the airway of a patient, through which life-supporting air can be channeled. It comprises a compact nest of discrete, elongated air transmitting hollow relatively large bore, relatively thin wall fibers connected in parallel by inlet and outlet connections and having walls of substance permeable to water vapor and impermeable under operating conditions to liquid water. A relatively negative-pressure water-filled chamber surrounds the effective length of the fibers. The fibers are adapted to divide dry inhalation air for a patient which enters said inlet connection into a series of air-flow filaments for humidification by water vapor that permeates the wall of the fibers from the surrounding relatively negative-pressure water. The fibers are provided in size and number sufficient to freely pass under normal air-flow conditions an aggregate air-flow volume corresponding to the life-supporting need of the patient, and to provide effective fiber surface area sized to pass water vapor sufficient to humidify air at normal flow rates substantially to saturation from said relatively negative-pressure water heated to about body temperature. The outlet connection is arranged to collect the thus humidified filaments of air and direct the unified flow into the patient, whereby the medical humidifier can provide full humidification of air directed into a patient in a practical, failsafe, low flow resistance compact unit that can be disposable.
| (39 suppliers)|
Generally, Medical thermometers are mercury-in-glass thermometers used for measuring human body temperature, with the tip of the thermometer being inserted either into the mouth (oral temperature), under the armpit or into the rectum via the anus (rectal temperature). The mercury filled medical thermometers consist of a bulb containing mercury attached to a small tube. As the temperature rises, the mercury expands and flows up the tube. The temperature is obtained by reading the scale inscribed on the side of the thermometers. Other kinds of medical thermometers exist such as the tympanic thermometer that measures the temperature of the tympanum by infrared measurement, and the band thermometer that are applied to the patient's brow.