Pulse Oximeter Calibrator
نویسنده
چکیده
........................................................................................................................................................ 5 Table of Figures ............................................................................................................................................ 6 Table of Tables ............................................................................................................................................. 8 Executive Summary ...................................................................................................................................... 9 1.0 Introduction ..................................................................................................................................... 12 2.0 Literature Review ............................................................................................................................ 13 2.1 Oximetry ..................................................................................................................................... 13 2.2 Pulse Oximetry ............................................................................................................................ 13 2.3 Current Pulse Oximeter Calibrators ............................................................................................ 15 2.3.1 Mock Circulatory Systems .................................................................................................. 15 2.3.2 Basic Finger Models ........................................................................................................... 18 2.3.3 Electrical Simulators ........................................................................................................... 20 3.0 Design Approach ............................................................................................................................ 22 3.1 Initial Client Statement ............................................................................................................... 22 3.2 Revised Client Statement ............................................................................................................ 22 3.3 Device Requirements .................................................................................................................. 22 3.4 Device Objectives ....................................................................................................................... 23 3.5 Component Comparison ............................................................................................................. 24 4.0 Device Development ....................................................................................................................... 27 4.1 Design Alternatives ..................................................................................................................... 27 4.1.1 Mock Circulatory System ................................................................................................... 27 4.1.2 Wedge Model ...................................................................................................................... 29 4.2 Evaluation of Alternative Designs .............................................................................................. 34 4.2.1 Mock Circulatory System ................................................................................................... 34 4.2.2 Wedge Model ...................................................................................................................... 35 4.3 Design Selection ......................................................................................................................... 36 5.0 Current Design ................................................................................................................................ 38 5.1 Conical Core ............................................................................................................................... 38 5.2 Core Manufacturing .................................................................................................................... 45
منابع مشابه
A Three-Wavelength Pulse Oximeter for Carboxyhemoglobin Determination
Pulse oximetry measures the relative concentration of arterial oxygenated hemoglobin and reduced hemoglobin. This paper presents the design of a pulse oximeter, which measures the presence of a third substance, carboxyhemoglobin (HbCO), by unfiltered LEDs at 660 nm, 810 nm, and 940 nm. Background information is given on the theory of pulse oximetry. Theoretical approximations and calculations w...
متن کاملPulse oximeter plethysmographic waveform changes in awake, spontaneously breathing, hypovolemic volunteers.
BACKGROUND The primary objective of this study was to determine whether alterations in the pulse oximeter waveform characteristics would track progressive reductions in central blood volume. We also assessed whether changes in the pulse oximeter waveform provide an indication of blood loss in the hemorrhaging patient before changes in standard vital signs. METHODS Pulse oximeter data from fin...
متن کاملNovel Wearable and Wireless Ring-Type Pulse Oximeter with Multi-Detectors
The pulse oximeter is a popular instrument to monitor the arterial oxygen saturation (SPO2). Although a fingertip-type pulse oximeter is the mainstream one on the market at present, it is still inconvenient for long-term monitoring, in particular, with respect to motion. Therefore, the development of a wearable pulse oximeter, such as a finger base-type pulse oximeter, can effectively solve the...
متن کامل"Motion-resistant" pulse oximetry: a comparison of new and old models.
Several pulse oximeter manufacturers have recently developed instruments that are claimed to be resistant to the effects of patient motion. We performed a laboratory volunteer experiment to compare the performances of several of these instruments, as well as some older models, during combinations of motion and hypoxemia. Twenty oximeters were studied. A motorized table produced different hand m...
متن کاملUsefulness of Pulse Oximeter That Can Measure SpO2 to One Digit After Decimal Point.
Pulse oximeters are used to noninvasively measure oxygen saturation in arterial blood (SaO2). Although arterial oxygen saturation measured by pulse oximeter (SpO2) is usually indicated in 1% increments, the value of SaO2 from arterial blood gas analysis is not an integer. We have developed a new pulse oximeter that can measure SpO2 to one digit after the decimal point. The values of SpO2 from t...
متن کامل