Author: John Mulindi
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Key Factors to Consider when Designing Biomedical Instruments
Some of the important factors that are considered when designing a medical measuring instrument include:
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The Functions of Humidifiers, Nebulizers and Aspirators as Respiratory Therapeutic Instruments
Humidifiers Humidifiers are used to increase the humidity (water content) of the inspired air. The humidity of the inhaled air should be high (near 100%) in order to avoid damage to the upper air passage of the lungs. Hence, the air or oxygen used for the respiratory therapy must be humidified. All ventilators incorporate an…
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Biotelemetry Monitoring Instruments for Telemedicine
The rapid technological development has made it possible to realize wireless medical instruments i.e. wireless sensors with networking capabilities to facilitate the joint processing of spatially and temporary collected physiological information from the different parts of the body and the external communication for mobile health care. In this article, I look at some of the…
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Types of Oximeters
The types of Oximeters commonly used to measure percentage oxygen saturation of circulating blood include: Pulse Oximeter The principle of operation of pulse oximeter is based on the concept that the arterial oxygen saturation determinations can be made using two wavelengths. These two wavelengths assume two absorbers namely: The instrument consists of a pair of…
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The Process of Oximetry in Biomedical Measurements
Oximetry is the determination of the percentage oxygen saturation of the circulating arterial blood. Where, [HbO2] is the concentration of oxygenated haemoglobin and [Hb] is the concentration of deoxygenated haemoglobin. The percentage of oxygen saturation in the blood is very important. The oxygen saturation is a bio-constant and is an indication of the performance of…
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Key Features and Applications of Telemedicine
Telemedicine is the use of telecommunication and computer technologies to deliver health care from one location to another. Telemedicine employs modern information technology to deliver timely health services to those who need it by electronic transmission of the necessary expertise and information among geographically dispersed parties. Physicians, laboratories and patients can be the distant parties.…
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Biotelemetry and How it is Applied in Medical Field
Biotelemetry is the process which the measurement of biological parameters is done over a distance. This involves transmitting the bioelectrical and physiological data from the point of generation i.e. a patient located away from the hospital to the point of reception (hospital). The biological data are put in a suitable form to be transmitted by…
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Ultrasound vs. X-rays, what are the differences?
Both ultrasound and X-rays are used in medical diagnosis. We look at the differences in their physical properties and the applications differences between the two as applied in medical diagnosis. Table 1: Physical Property differences between Ultrasound and X-rays Property Ultrasound X-rays Wave type Longitudinal Electromagnetic Transmission requirement of medium Elastic No medium is required…
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How Ophthalmic Scanning of the Eye is done
The ultrasound is widely used for the diagnostics scanning of the eye. A-scan and B-scan modes of display are used in ophthalmic scanning. The transducer is placed directly over the eye of the patient while performing ophthalmic scanning. The high frequency sound waves that travel through the eye and the reflections (echoes) of these waves…