Atlantean Corp. is a forward-looking and dedicated engineering company with a group of enthusiastic and talented engineers ready to serve. Founded in 2008, Atlantean Corp. with the headquarters and manufacturing facilities in Chubay City Taiwan is dedicated to provide engineering design and product development service upon request.
“Anticipating people’s needs and fulfilling them with innovative technology” says the role Atlantean Corp. intends to play from the date of incorporation. Atlantean relies on the R&D talents from various fields, such as, industrial detection, medical equipment, and information system, to serve customers with their needs in pulse oximeter (SpO2), ECG, Mesh nebulizer, and complete respiratory product line. Atlantean would like to show you what it is capable of in the sense of innovation and creativity.
People today demand innovative products on a daily basis; however, research and development takes time and that is where Atlantean steps in to make a difference for you and your business. Atlantean demands its engineers to handle tasks quickly and efficiently in today’s technology-reliant society. Why not build up your business with less of headache by making us your partner in engineering design and product development.
To achieve the ideal interactive relationship between human and technology, in which, technology can assess and adapt to the requirements of individuals, the best way would be to have Atlantean helped you develop it. Based on this belief, Atlantean is committed to R&D for your needs in homecare and medical field, which is the essence of its very existence in business. The key development concept behind every technology is by knowing and appreciating what good it can bring to make our life better. Atlantean can advance the capabilities of R&D by correctly capturing and processing your demands at good speeds.
If detection devices become smarter in recognizing a much broader range of individual health information, system control performance could be improved even further, making our life a much enjoyable one. Through steady advancements in medical detection technology, Atlantean can make a sizable contribution to making good health and good life a reality.
Health management is the key to a better and enjoyable health and life. Prevention is better than cure. Developing better and smarter medical products to watch your health condition is one way to take a better care of yourself and someone you love. Atlantean is here to make sure of that for you!
Pulse oximetry aims to measure the oxygen saturation of arterial blood. It has become accepted as a standard of care in many areas since its development by Takuo Aoyagi in 1971. However, there is considerable evidence that the principles of pulse oximetry and its important practical limitations are not well understood by many healthcare professionals.
The absorption spectra of haemoglobin and oxyhaemoglobin differ. The relative amounts of each can be detected by considering the relative absorption of two beams of light through perfused tissue at wavelengths where the absorption spectra differ significantly. In practice, wavelengths of 660nm (red light) and 940 nm (infrared) are used in pulse oximeters.
However, other tissues (venous blood, bone, skin, muscle, etc.) also absorb light, so a pulse oximeter looks for the change in absorption over the cardiac cycle due to arterial pulsation. This is due to factors such as changes in diameter of arteries and arterioles, and a change in the axis of erythrocytes. In practice, absorption varies by only 1-2% over the cardiac cycle.
Pulse oximeters use two light-emitting diodes, one for each wavelength, and one photodetector to detect both wavelengths. The absorption for each wavelength will show a constant component (due to tissue, etc.) and a variable component (due to arterial pulsation). The pulse oximeter alters the signals electrically so that the constant component of each is the same, then removes this constant component, leaving variable red and infrared signals (fig.1). The relative sizes of these signals varies with the arterial oxygen saturation. Pulse oximeters measure the ration between these two wavelengths, then use a look-up table to give the oxygen saturation. This look-up table is developed by desaturate volunteers.
As it is considered unethical to desaturate volunteers below 80%, values for saturations less than this are obtained by extrapolation and so are potentially unreliable. Co-oximeters, which use multiple wavelengths of light, are able to differentiate haemoglobin, oxyhaemoglobin, methaemoglobin and carboxyhaemoglobin and measure both fractional and functional oxygen saturation. Pulse oximeters using only two wavelengths cannot do this, but they can be calibrated to display either parameter (with some assumptions). It has been suggested that the figure produced by a pulse oximeter should be defined as “oxygen saturation as measured by a pulse oximeter”
Pulse oximeters are used in many clinical situations and in many are considered a standard of care enabling hypoxic events to be avoided. In other situations, the information they provide simply would not be available without them. The principles underlying pulse oximetry are being used in a number of new developments. Plethysmographic waveforms are being reviewed for use in haemodynamic assessment and multi-wavelength pulse oximetry potentially offers increased accuracy and the possibility of noninvasive measurement of carboxyhaemoglobin, methaemoglobin and total haemoglobin. Whatever the future brings, it will remain as important as it is with current pulse oximetry for the clinician to have an understanding of the principles and limitations of their equipment.