Abstract: An electronic blood pressure meter determines, in an inflation process, pressure Ps correlated to systolic pressure, pressure Pd correlated to diastolic pressure and pulse wave period Pc, and then calculates deflation rate def−v in a deflation process based on a first formula (def−v=(Ps−Pd−mb1)×Pc/N, where N represents the number of required beats). Further, maximum inflation value Inf−max is calculated based on a second formula (Inf−max=def−v·(np×Pc+&agr;)+Ps+&bgr;1). The pressure is increased to reach the calculated maximum value and then deflation is started at the calculated deflation rate . The blood pressure meter can thus perform a precise measurement in a shortest time.

Abstract: This invention relates to an infrared clinical thermometer having a probe projecting forward from the main thermometer body. The probe is designed to be inserted into an ear canal and detect infrared radiation from a human eardrum in order to measure body temperature. A measurement start switch is located on the upper portion of the rear side of the thermometer main body, substantially in line with the probe. When the measurement start switch is pressed, the probe does not rotate or tilt, allowing a accurate temperature measurement to be obtained. The thermometer also has a display which shows the measurement results after the operation of the measurement start switch. The display is located on the upper portion of the rear side of the main body, so that it can be clearly seen as the thermometer is held by the operator.

Abstract: This invention relates to an infrared clinical thermometer having a probe projecting forward from the main thermometer body. The probe is designed to be inserted into an car canal and detect infrared radiation from a human eardrum in order to measure body temperature. A measurement start switch is located on the upper portion of the rear side of the thermometer main body, substantially in line with the probe. When the measurement start switch is pressed, the probe does not rotate or tilt, allowing a accurate temperature measurement to be obtained. The thermometer also has a display which shows the measurement results after the operation of the measurement start switch. The display is located on the upper portion of the rear side of the main body, so that it can be clearly seen as the thermometer is held by the operator.

Abstract: An infrared thermometer such that the measurand includes no error which may be caused due to the transmission of the heat from an object (especially, an external auditory canal), into which a probe is inserted to the probe, to a waveguide and an infrared sensor. In a temperature detecting section where an infrared sensor (40), a waveguide (60) and a temperature sensor (68) are provided in a probe (20), a second thermally conductive tube (34) is so provided between the probe (20) and the waveguide (60) as to be heat insulated from the waveguide (60) and the infrared sensor (40). Thus, the heat from the probe (20) is not transmitted to the waveguide (60) and the infrared sensor (40).

Abstract: A case for mounting on a probe of a radiation clinical thermometer a sheet shaped probe cover which includes a probe insertion member having an insertion opening to be inserted by the probe and an infection preventing sheet in contact with the probe insertion member. The case includes a cover storage portion for storing a series of continuing probe covers each having an engagement opening at a predetermined position thereof, a probe insertion cut portion for positioning each probe cover and for insertion by the probe, a support surface disposed around the probe insertion cut portion to support a peripheral of the insertion opening of the probe insertion member of one of the probe covers, and a projection adapted to be engaged with the engagement opening of a subsequent probe cover when the probe cover mounted on the probe is torn at the probe insertion cut portion.

Abstract: The amplitude of a pulse wave that appears in a form superimposed upon cuff pressure is detected every beat of a heartbeat in synchronism with the beat not only in the course of depressurization but also in the course of pressurization. The maximum value Amaxi of the pulse-wave amplitude in the course of pressurization is multiplied by a prescribed coefficient to decide a threshold value TH. The threshold value TH is calculated as a value equivalent to a pulse-wave amplitude corresponding to systolic pressure that would be determined in the course of depressurization. After the cuff is pressurized to the target pressure, a transition is made to the depressurizing process. It is judged that cuff pressurization is inadequate if the initial pulse-wave amplitude in the course of depressurization is greater than the threshold value TH. Thus, whether or not cuff pressurization is inadequate can be judged appropriately at all times without any influence due to personal differences or physical condition.

Abstract: An electronic blood pressure meter capable of performing a proper automatic pressuring operation according to a blood pressure of a subject and measuring the blood pressure rapidly with accuracy.

Abstract: A blood pressure measuring device is provided which comprises a cuff for pressuring an artery, electronic circuitry made up of a clock, control unit, and blood pressure measuring unit for measuring blood pressure and controlling the device, and a cuff pressurizing and depressurizing unit. The basic components of the device are used to effectively give the patient, through a feeling of pressure from the cuff, information such as a signal indicating the start of measurement, by momentarily pressurizing the cuff then depressurizing it. This signal can be detected by hearing imparied patients as well as healthy patients who are in a noisy environment, but can not be noticed by others in close proximity to the patient.